diff options
Diffstat (limited to 'lib')
74 files changed, 3603 insertions, 3905 deletions
diff --git a/lib/compiler/src/compile.erl b/lib/compiler/src/compile.erl index df1af36eeb..a3120eb917 100644 --- a/lib/compiler/src/compile.erl +++ b/lib/compiler/src/compile.erl @@ -248,6 +248,7 @@ format_error({module_name,Mod,Filename}) -> abstract_code=[], %Abstract code for debugger. options=[] :: [option()], %Options for compilation mod_options=[] :: [option()], %Options for module_info + encoding=none :: none | epp:source_coding(), errors=[], warnings=[]}). @@ -734,8 +735,9 @@ collect_asm([X | Rest], R) -> beam_consult_asm(St) -> case file:consult(St#compile.ifile) of {ok, Forms0} -> + Encoding = epp:read_encoding(St#compile.ifile), {Module, Forms} = preprocess_asm_forms(Forms0), - {ok,St#compile{module=Module, code=Forms}}; + {ok,St#compile{module=Module, code=Forms, encoding=Encoding}}; {error,E} -> Es = [{St#compile.ifile,[{none,?MODULE,{open,E}}]}], {error,St#compile{errors=St#compile.errors ++ Es}} @@ -777,7 +779,8 @@ parse_module(St) -> R = epp:parse_file(St#compile.ifile, IncludePath, pre_defs(Opts)), case R of {ok,Forms} -> - {ok,St#compile{code=Forms}}; + Encoding = epp:read_encoding(St#compile.ifile), + {ok,St#compile{code=Forms,encoding=Encoding}}; {error,E} -> Es = [{St#compile.ifile,[{none,?MODULE,{epp,E}}]}], {error,St#compile{errors=St#compile.errors ++ Es}} @@ -1424,28 +1427,28 @@ report_warnings(#compile{options=Opts,warnings=Ws0}) -> end. format_message(F, P, [{{Line,Column}=Loc,Mod,E}|Es]) -> - M = {{F,Loc},io_lib:format("~s:~w:~w ~s~s\n", + M = {{F,Loc},io_lib:format("~s:~w:~w ~s~ts\n", [F,Line,Column,P,Mod:format_error(E)])}, [M|format_message(F, P, Es)]; format_message(F, P, [{Line,Mod,E}|Es]) -> - M = {{F,{Line,0}},io_lib:format("~s:~w: ~s~s\n", + M = {{F,{Line,0}},io_lib:format("~s:~w: ~s~ts\n", [F,Line,P,Mod:format_error(E)])}, [M|format_message(F, P, Es)]; format_message(F, P, [{Mod,E}|Es]) -> - M = {none,io_lib:format("~s: ~s~s\n", [F,P,Mod:format_error(E)])}, + M = {none,io_lib:format("~s: ~s~ts\n", [F,P,Mod:format_error(E)])}, [M|format_message(F, P, Es)]; format_message(_, _, []) -> []. %% list_errors(File, ErrorDescriptors) -> ok list_errors(F, [{{Line,Column},Mod,E}|Es]) -> - io:fwrite("~s:~w:~w: ~s\n", [F,Line,Column,Mod:format_error(E)]), + io:fwrite("~s:~w:~w: ~ts\n", [F,Line,Column,Mod:format_error(E)]), list_errors(F, Es); list_errors(F, [{Line,Mod,E}|Es]) -> - io:fwrite("~s:~w: ~s\n", [F,Line,Mod:format_error(E)]), + io:fwrite("~s:~w: ~ts\n", [F,Line,Mod:format_error(E)]), list_errors(F, Es); list_errors(F, [{Mod,E}|Es]) -> - io:fwrite("~s: ~s\n", [F,Mod:format_error(E)]), + io:fwrite("~s: ~ts\n", [F,Mod:format_error(E)]), list_errors(F, Es); list_errors(_F, []) -> ok. @@ -1501,10 +1504,12 @@ src_listing(Ext, St) -> Ext, St). do_src_listing(Lf, Fs) -> - foreach(fun (F) -> io:put_chars(Lf, [erl_pp:form(F),"\n"]) end, + Opts = [lists:keyfind(encoding, 1, io:getopts(Lf))], + foreach(fun (F) -> io:put_chars(Lf, [erl_pp:form(F, Opts),"\n"]) end, Fs). -listing(Ext, St) -> +listing(Ext, St0) -> + St = St0#compile{encoding = none}, listing(fun(Lf, Fs) -> beam_listing:module(Lf, Fs) end, Ext, St). listing(LFun, Ext, St) -> @@ -1512,6 +1517,7 @@ listing(LFun, Ext, St) -> case file:open(Lfile, [write,delayed_write]) of {ok,Lf} -> Code = restore_expanded_types(Ext, St#compile.code), + output_encoding(Lf, St), LFun(Lf, Code), ok = file:close(Lf), {ok,St}; @@ -1520,6 +1526,12 @@ listing(LFun, Ext, St) -> {error,St#compile{errors=St#compile.errors ++ Es}} end. +output_encoding(F, #compile{encoding = none}) -> + ok = io:setopts(F, [{encoding, epp:default_encoding()}]); +output_encoding(F, #compile{encoding = Encoding}) -> + ok = io:setopts(F, [{encoding, Encoding}]), + ok = io:fwrite(F, <<"%% ~s\n">>, [epp:encoding_to_string(Encoding)]). + restore_expanded_types("P", Fs) -> epp:restore_typed_record_fields(Fs); restore_expanded_types("E", {M,I,Fs0}) -> diff --git a/lib/edoc/priv/edoc.dtd b/lib/edoc/priv/edoc.dtd index 6a332cf22f..ba4ac0db28 100644 --- a/lib/edoc/priv/edoc.dtd +++ b/lib/edoc/priv/edoc.dtd @@ -4,7 +4,8 @@ <!ELEMENT overview (title, description?, author*, copyright?, version?, since?, see*, reference*, todo?, packages, modules)> <!ATTLIST overview - root CDATA #IMPLIED> + root CDATA #IMPLIED + encoding CDATA #IMPLIED> <!ELEMENT title (#PCDATA)> @@ -25,6 +26,7 @@ name CDATA #REQUIRED private (yes | no) #IMPLIED hidden (yes | no) #IMPLIED + encoding CDATA #IMPLIED root CDATA #IMPLIED> <!ELEMENT description (briefDescription, fullDescription?)> diff --git a/lib/edoc/src/edoc.erl b/lib/edoc/src/edoc.erl index 544465b14a..5a599e6e97 100644 --- a/lib/edoc/src/edoc.erl +++ b/lib/edoc/src/edoc.erl @@ -120,7 +120,8 @@ file(Name, Options) -> Suffix = proplists:get_value(file_suffix, Options, ?DEFAULT_FILE_SUFFIX), Dir = proplists:get_value(dir, Options, filename:dirname(Name)), - edoc_lib:write_file(Text, Dir, BaseName ++ Suffix). + Encoding = [{encoding, edoc_lib:read_encoding(Name, [])}], + edoc_lib:write_file(Text, Dir, BaseName ++ Suffix, '', Encoding). %% TODO: better documentation of files/1/2, packages/1/2, application/1/2/3 diff --git a/lib/edoc/src/edoc.hrl b/lib/edoc/src/edoc.hrl index 98debba4ab..44c5d6fef4 100644 --- a/lib/edoc/src/edoc.hrl +++ b/lib/edoc/src/edoc.hrl @@ -48,7 +48,8 @@ %% functions = ordset(function_name()), %% exports = ordset(function_name()), %% attributes = ordset({atom(), term()}), -%% records = [{atom(), [{atom(), term()}]}]} +%% records = [{atom(), [{atom(), term()}]}], +%% encoding = epp:source_encoding()} %% ordset(T) = sets:ordset(T) %% function_name(T) = {atom(), integer()} @@ -57,7 +58,8 @@ functions = [], exports = [], attributes = [], - records = [] + records = [], + encoding = latin1 }). %% Environment for generating documentation data diff --git a/lib/edoc/src/edoc_data.erl b/lib/edoc/src/edoc_data.erl index 624f9177a2..f88ba05f4b 100644 --- a/lib/edoc/src/edoc_data.erl +++ b/lib/edoc/src/edoc_data.erl @@ -83,7 +83,8 @@ module(Module, Entries, Env, Opts) -> AllTags = get_all_tags(Entries), Functions = function_filter(Entries, Opts), Out = {module, ([{name, Name}, - {root, Env#env.root}] + {root, Env#env.root}, + {encoding, Module#module.encoding}] ++ case is_private(HeaderTags) of true -> [{private, "yes"}]; false -> [] diff --git a/lib/edoc/src/edoc_doclet.erl b/lib/edoc/src/edoc_doclet.erl index 385d20e9ae..d6561e10fc 100644 --- a/lib/edoc/src/edoc_doclet.erl +++ b/lib/edoc/src/edoc_doclet.erl @@ -193,7 +193,8 @@ source({M, P, Name, Path}, Dir, Suffix, Env, Set, Private, Hidden, true -> Text = edoc:layout(Doc, Options), Name1 = packages:last(M) ++ Suffix, - edoc_lib:write_file(Text, Dir, Name1, P), + Encoding = [{encoding,encoding(Doc)}], + edoc_lib:write_file(Text, Dir, Name1, P, Encoding), {sets:add_element(Module, Set), Error}; false -> {Set, Error} @@ -359,14 +360,19 @@ xhtml_1(Title, CSS, Body) -> overview(Dir, Title, Env, Opts) -> File = proplists:get_value(overview, Opts, filename:join(Dir, ?OVERVIEW_FILE)), + Encoding = edoc_lib:read_encoding(File, [{in_comment_only, false}]), Tags = read_file(File, overview, Env, Opts), - Data = edoc_data:overview(Title, Tags, Env, Opts), + Data0 = edoc_data:overview(Title, Tags, Env, Opts), + EncodingAttribute = #xmlAttribute{name = encoding, + value = atom_to_list(Encoding)}, + #xmlElement{attributes = As} = Data0, + Data = Data0#xmlElement{attributes = [EncodingAttribute | As]}, F = fun (M) -> M:overview(Data, Opts) end, Text = edoc_lib:run_layout(F, Opts), - edoc_lib:write_file(Text, Dir, ?OVERVIEW_SUMMARY). - + EncOpts = [{encoding,Encoding}], + edoc_lib:write_file(Text, Dir, ?OVERVIEW_SUMMARY, '', EncOpts). copy_image(Dir) -> case code:priv_dir(?EDOC_APP) of @@ -441,6 +447,12 @@ is_hidden(E) -> _ -> false end. +encoding(E) -> + case get_attrval(encoding, E) of + "latin1" -> latin1; + _ -> utf8 + end. + get_attrval(Name, #xmlElement{attributes = As}) -> case get_attr(Name, As) of [#xmlAttribute{value = V}] -> diff --git a/lib/edoc/src/edoc_extract.erl b/lib/edoc/src/edoc_extract.erl index 5a79e127f6..dcab816f54 100644 --- a/lib/edoc/src/edoc_extract.erl +++ b/lib/edoc/src/edoc_extract.erl @@ -226,7 +226,7 @@ add_macro_defs(Defs0, Opts, Env) -> %% lines of text before the first tag are ignored. `Env' is an %% environment created by {@link edoc_lib:get_doc_env/4}. Upon error, %% `Reason' is an atom returned from the call to {@link -%% //kernel/file:read_file/1}. +%% //kernel/file:read_file/1} or the atom 'invalid_unicode'. %% %% See {@link text/4} for options. @@ -235,7 +235,13 @@ add_macro_defs(Defs0, Opts, Env) -> file(File, Context, Env, Opts) -> case file:read_file(File) of {ok, Bin} -> - {ok, text(binary_to_list(Bin), Context, Env, Opts, File)}; + Enc = edoc_lib:read_encoding(File,[{in_comment_only, false}]), + case catch unicode:characters_to_list(Bin, Enc) of + String when is_list(String) -> + {ok, text(String, Context, Env, Opts, File)}; + _ -> + {error, invalid_unicode} + end; {error, _} = Error -> Error end. @@ -306,12 +312,14 @@ get_module_info(Forms, File) -> Exports = ordsets:from_list(get_list_keyval(exports, L)), Attributes = ordsets:from_list(get_list_keyval(attributes, L)), Records = get_list_keyval(records, L), + Encoding = edoc_lib:read_encoding(File, []), #module{name = Name, parameters = Vars, functions = Functions, exports = ordsets:intersection(Exports, Functions), attributes = Attributes, - records = Records}. + records = Records, + encoding = Encoding}. get_list_keyval(Key, L) -> case lists:keyfind(Key, 1, L) of diff --git a/lib/edoc/src/edoc_layout.erl b/lib/edoc/src/edoc_layout.erl index 951cec121c..7bd0615f5c 100644 --- a/lib/edoc/src/edoc_layout.erl +++ b/lib/edoc/src/edoc_layout.erl @@ -210,7 +210,8 @@ layout_module(#xmlElement{name = module, content = Es}=E, Opts) -> ++ [hr, ?NL] ++ navigation("bottom") ++ timestamp()), - xhtml(Title, stylesheet(Opts), Body). + Encoding = get_attrval(encoding, E), + xhtml(Title, stylesheet(Opts), Body, Encoding). module_params(Es) -> As = [{get_text(argName, Es1), @@ -956,10 +957,17 @@ local_label(R) -> "#" ++ R. xhtml(Title, CSS, Body) -> + xhtml(Title, CSS, Body, "latin1"). + +xhtml(Title, CSS, Body, Encoding) -> + EncString = case Encoding of + "latin1" -> "ISO-8859-1"; + _ -> "UTF-8" + end, [{html, [?NL, {head, [?NL, {meta, [{'http-equiv',"Content-Type"}, - {content, "text/html; charset=ISO-8859-1"}], + {content, "text/html; charset="++EncString}], []}, ?NL, {title, Title}, @@ -1021,7 +1029,8 @@ overview(E=#xmlElement{name = overview, content = Es}, Options) -> ++ [?NL, hr] ++ navigation("bottom") ++ timestamp()), - XML = xhtml(Title, stylesheet(Opts), Body), + Encoding = get_attrval(encoding, E), + XML = xhtml(Title, stylesheet(Opts), Body, Encoding), xmerl:export_simple(XML, ?HTML_EXPORT, []). %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% NYTT diff --git a/lib/edoc/src/edoc_lib.erl b/lib/edoc/src/edoc_lib.erl index 90fb8a679c..67f9ee2b4a 100644 --- a/lib/edoc/src/edoc_lib.erl +++ b/lib/edoc/src/edoc_lib.erl @@ -30,10 +30,10 @@ parse_contact/2, escape_uri/1, join_uri/2, is_relative_uri/1, is_name/1, to_label/1, find_doc_dirs/0, find_sources/2, find_sources/3, find_file/3, try_subdir/2, unique/1, - write_file/3, write_file/4, write_info_file/4, + write_file/3, write_file/4, write_file/5, write_info_file/4, read_info_file/1, get_doc_env/1, get_doc_env/4, copy_file/2, uri_get/1, run_doclet/2, run_layout/2, - simplify_path/1, timestr/1, datestr/1]). + simplify_path/1, timestr/1, datestr/1, read_encoding/2]). -import(edoc_report, [report/2, warning/2]). @@ -57,6 +57,13 @@ datestr({Y,M,D}) -> lists:flatten(io_lib:fwrite("~s ~w ~w",[lists:nth(M, Ms),D,Y])). %% @private +read_encoding(File, Options) -> + case epp:read_encoding(File, Options) of + none -> epp:default_encoding(); + Encoding -> Encoding + end. + +%% @private count(X, Xs) -> count(X, Xs, 0). @@ -677,7 +684,6 @@ try_subdir(Dir, Subdir) -> write_file(Text, Dir, Name) -> write_file(Text, Dir, Name, ''). - %% @spec (Text::deep_string(), Dir::edoc:filename(), %% Name::edoc:filename(), Package::atom()|string()) -> ok %% @doc Like {@link write_file/3}, but adds path components to the target @@ -685,10 +691,13 @@ write_file(Text, Dir, Name) -> %% @private write_file(Text, Dir, Name, Package) -> + write_file(Text, Dir, Name, Package, [{encoding,latin1}]). + +write_file(Text, Dir, Name, Package, Options) -> Dir1 = filename:join([Dir | packages:split(Package)]), File = filename:join(Dir1, Name), ok = filelib:ensure_dir(File), - case file:open(File, [write]) of + case file:open(File, [write] ++ Options) of {ok, FD} -> io:put_chars(FD, Text), ok = file:close(FD); @@ -705,8 +714,9 @@ write_info_file(App, Packages, Modules, Dir) -> Ts1 = if App =:= ?NO_APP -> Ts; true -> [{application, App} | Ts] end, - S = [io_lib:fwrite("~p.\n", [T]) || T <- Ts1], - write_file(S, Dir, ?INFO_FILE). + S0 = [io_lib:fwrite("~p.\n", [T]) || T <- Ts1], + S = ["%% encoding: UTF-8\n" | S0], + write_file(S, Dir, ?INFO_FILE, '', [{encoding,unicode}]). %% @spec (Name::edoc:filename()) -> {ok, string()} | {error, Reason} %% @@ -714,7 +724,14 @@ write_info_file(App, Packages, Modules, Dir) -> read_file(File) -> case file:read_file(File) of - {ok, Bin} -> {ok, binary_to_list(Bin)}; + {ok, Bin} -> + Enc = edoc_lib:read_encoding(File, []), + case catch unicode:characters_to_list(Bin, Enc) of + String when is_list(String) -> + {ok, String}; + _ -> + {error, invalid_unicode} + end; {error, Reason} -> {error, Reason} end. diff --git a/lib/edoc/src/edoc_macros.erl b/lib/edoc/src/edoc_macros.erl index 70fb38bf0a..08686c4fb5 100644 --- a/lib/edoc/src/edoc_macros.erl +++ b/lib/edoc/src/edoc_macros.erl @@ -88,13 +88,13 @@ link_macro(S, Line, Env) -> true -> " target=\"_top\""; % note the initial space false -> "" end, - lists:flatten(io_lib:fwrite("<a href=\"~s\"~s>~s</a>", + lists:flatten(io_lib:fwrite("<a href=\"~s\"~s>~ts</a>", [URI, Target, Txt])). section_macro(S, _Line, _Env) -> S1 = lists:reverse(edoc_lib:strip_space( lists:reverse(edoc_lib:strip_space(S)))), - lists:flatten(io_lib:format("<a href=\"#~s\">~s</a>", + lists:flatten(io_lib:format("<a href=\"#~ts\">~ts</a>", [edoc_lib:to_label(S1), S1])). type_macro(S, Line, Env) -> diff --git a/lib/edoc/src/edoc_wiki.erl b/lib/edoc/src/edoc_wiki.erl index 5c71658af5..cc0529d2a9 100644 --- a/lib/edoc/src/edoc_wiki.erl +++ b/lib/edoc/src/edoc_wiki.erl @@ -80,6 +80,7 @@ parse_xml(Data, Line) -> parse_xml_1(Text, Line) -> Text1 = "<doc>" ++ Text ++ "</doc>", + %% Any coding except "utf-8". Opts = [{line, Line}, {encoding, 'iso-8859-1'}], case catch {ok, xmerl_scan:string(Text1, Opts)} of {ok, {E, _}} -> @@ -174,7 +175,7 @@ expand_heading_1(Cs, N, L, As) -> expand_heading_2(Ts, Cs, N, L, As) -> H = ?BASE_HEADING + N, - Ts1 = io_lib:format("<h~w><a name=\"~s\">~s</a></h~w>\n", + Ts1 = io_lib:format("<h~w><a name=\"~ts\">~ts</a></h~w>\n", [H, make_label(Ts), Ts, H]), expand_new_line(Cs, L + 1, lists:reverse(lists:flatten(Ts1), As)). diff --git a/lib/erl_docgen/priv/bin/xml_from_edoc.escript b/lib/erl_docgen/priv/bin/xml_from_edoc.escript index 2cb81be1be..65a580dca2 100755 --- a/lib/erl_docgen/priv/bin/xml_from_edoc.escript +++ b/lib/erl_docgen/priv/bin/xml_from_edoc.escript @@ -2,7 +2,7 @@ %% -*- erlang -*- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2010-2011. All Rights Reserved. +%% Copyright Ericsson AB 2010-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -100,10 +100,12 @@ module(File, Args) -> users_guide(File, Args) -> case filelib:is_regular(File) of true -> + Enc = epp:read_encoding(File, [{in_comment_only, false}]), + Encoding = [{encoding, Enc} || Enc =/= none], Opts = [{def, Args#args.def}, {app_default, "OTPROOT"}, {file_suffix, Args#args.suffix}, - {layout, Args#args.layout}], + {layout, Args#args.layout}] ++ Encoding, Env = edoc_lib:get_doc_env(Opts), @@ -115,7 +117,7 @@ users_guide(File, Args) -> Text = edoc_lib:run_layout(F, Opts), OutFile = "chapter" ++ Args#args.suffix, - edoc_lib:write_file(Text, ".", OutFile); + edoc_lib:write_file(Text, ".", OutFile, '', Encoding); false -> io:format("~s: not a regular file\n", [File]), usage() diff --git a/lib/erl_docgen/priv/fop.xconf b/lib/erl_docgen/priv/fop.xconf new file mode 100644 index 0000000000..70ecd608c3 --- /dev/null +++ b/lib/erl_docgen/priv/fop.xconf @@ -0,0 +1,45 @@ +<?xml version="1.0"?> +<!-- + # + # %CopyrightBegin% + # + # Copyright Ericsson AB 2009-2012. All Rights Reserved. + # + # The contents of this file are subject to the Erlang Public License, + # Version 1.1, (the "License"); you may not use this file except in + # compliance with the License. You should have received a copy of the + # Erlang Public License along with this software. If not, it can be + # retrieved online at http://www.erlang.org/. + # + # Software distributed under the License is distributed on an "AS IS" + # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + # the License for the specific language governing rights and limitations + # under the License. + # + # %CopyrightEnd% + + --> +<!-- NOTE: This is the version of the configuration --> +<fop version="1.0"> + <!-- The substitutions of DejaVu 700 are there because FOP outputs + warnings about doing the substitutions otherwise --> + <fonts> + <substitutions> + <substitution> + <from font-family="DejaVuSans" font-weight="700"/> + <to font-family="DejaVuSans" font-weight="400"/> + </substitution> + <substitution> + <from font-family="DejaVuSansMono" font-weight="700"/> + <to font-family="DejaVuSansMono" font-weight="400"/> + </substitution> + </substitutions> + </fonts> + <renderers> + <renderer mime="application/pdf"> + <fonts> + <auto-detect/> + </fonts> + </renderer> + </renderers> +</fop> diff --git a/lib/erl_docgen/priv/xsl/db_pdf_params.xsl b/lib/erl_docgen/priv/xsl/db_pdf_params.xsl index 4e61f1f476..2e3b22acf4 100644 --- a/lib/erl_docgen/priv/xsl/db_pdf_params.xsl +++ b/lib/erl_docgen/priv/xsl/db_pdf_params.xsl @@ -3,7 +3,7 @@ # # %CopyrightBegin% # - # Copyright Ericsson AB 2009-2011. All Rights Reserved. + # Copyright Ericsson AB 2009-2012. All Rights Reserved. # # The contents of this file are subject to the Erlang Public License, # Version 1.1, (the "License"); you may not use this file except in @@ -52,7 +52,7 @@ <!-- XSL-FO properties --> <xsl:attribute-set name="caption"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">0.8em</xsl:attribute> <xsl:attribute name="font-weight">bold</xsl:attribute> <xsl:attribute name="keep-with-previous.within-page">always</xsl:attribute> @@ -61,7 +61,7 @@ </xsl:attribute-set> <xsl:attribute-set name="pre"> - <xsl:attribute name="font-family">monospace</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSansMono, monospace</xsl:attribute> <xsl:attribute name="font-size">0.8em</xsl:attribute> <xsl:attribute name="keep-together.within-page">auto</xsl:attribute> <xsl:attribute name="linefeed-treatment">preserve</xsl:attribute> @@ -162,7 +162,7 @@ <xsl:attribute name="border-after-width">1pt</xsl:attribute> <xsl:attribute name="border-color"><xsl:value-of select="$pdfcolor"/></xsl:attribute> <xsl:attribute name="break-before">page</xsl:attribute> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">1.83em</xsl:attribute> <xsl:attribute name="font-weight">normal</xsl:attribute> <xsl:attribute name="space-after">1em</xsl:attribute> @@ -171,7 +171,7 @@ </xsl:attribute-set> <xsl:attribute-set name="h2"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">1.5em</xsl:attribute> <xsl:attribute name="font-weight">normal</xsl:attribute> <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute> @@ -180,7 +180,7 @@ </xsl:attribute-set> <xsl:attribute-set name="h3"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">1.33em</xsl:attribute> <xsl:attribute name="font-weight">normal</xsl:attribute> <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute> @@ -189,7 +189,7 @@ </xsl:attribute-set> <xsl:attribute-set name="h4"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">1.17em</xsl:attribute> <xsl:attribute name="font-weight">normal</xsl:attribute> <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute> @@ -198,7 +198,7 @@ </xsl:attribute-set> <xsl:attribute-set name="h5"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">1em</xsl:attribute> <xsl:attribute name="font-weight">bold</xsl:attribute> <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute> @@ -207,7 +207,7 @@ </xsl:attribute-set> <xsl:attribute-set name="h6"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">0.83em</xsl:attribute> <xsl:attribute name="font-weight">bold</xsl:attribute> <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute> @@ -227,20 +227,20 @@ <xsl:attribute name="border-after-style">solid</xsl:attribute> <xsl:attribute name="border-after-width">2pt</xsl:attribute> <xsl:attribute name="border-color"><xsl:value-of select="$pdfcolor"/></xsl:attribute> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">0.9em</xsl:attribute> <xsl:attribute name="font-weight">bold</xsl:attribute> </xsl:attribute-set> <xsl:attribute-set name="page-footer"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">0.9em</xsl:attribute> <xsl:attribute name="font-weight">bold</xsl:attribute> </xsl:attribute-set> <xsl:attribute-set name="code"> <xsl:attribute name="background-color">#e0e0ff</xsl:attribute> - <xsl:attribute name="font-family">monospace</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSansMono, monospace</xsl:attribute> <xsl:attribute name="font-size">0.8em</xsl:attribute> <xsl:attribute name="keep-together.within-page">auto</xsl:attribute> <xsl:attribute name="linefeed-treatment">preserve</xsl:attribute> @@ -303,7 +303,7 @@ <xsl:attribute-set name="module-name"> <xsl:attribute name="border-after-style">solid</xsl:attribute> <xsl:attribute name="border-after-width">1pt</xsl:attribute> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">1.5em</xsl:attribute> <xsl:attribute name="font-weight">normal</xsl:attribute> <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute> @@ -313,7 +313,7 @@ <xsl:attribute-set name="function-name"> <xsl:attribute name="font-weight">bold</xsl:attribute> - <xsl:attribute name="font-family">monospace</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSansMono, monospace</xsl:attribute> <!-- xsl:attribute name="font-size">0.8em</xsl:attribute --> <xsl:attribute name="keep-with-next.within-page">always</xsl:attribute> <xsl:attribute name="space-after">0.25em</xsl:attribute> @@ -401,7 +401,7 @@ </xsl:attribute-set> <xsl:attribute-set name="caption"> - <xsl:attribute name="font-family">sans-serif</xsl:attribute> + <xsl:attribute name="font-family">DejaVuSans, sans-serif</xsl:attribute> <xsl:attribute name="font-size">0.8em</xsl:attribute> <xsl:attribute name="font-weight">bold</xsl:attribute> <xsl:attribute name="keep-with-previous.within-page">always</xsl:attribute> diff --git a/lib/erl_docgen/src/docgen_edoc_xml_cb.erl b/lib/erl_docgen/src/docgen_edoc_xml_cb.erl index cbaa93a15d..ec7c3ef8e5 100644 --- a/lib/erl_docgen/src/docgen_edoc_xml_cb.erl +++ b/lib/erl_docgen/src/docgen_edoc_xml_cb.erl @@ -39,12 +39,14 @@ module(Element, Opts) -> SortP = proplists:get_value(sort_functions, Opts, true), XML = layout_module(Element, SortP), - xmerl:export_simple([XML], docgen_xmerl_xml_cb, []). + RootAttributes = root_attributes(Element, Opts), + xmerl:export_simple([XML], docgen_xmerl_xml_cb, RootAttributes). %% CHAPTER -overview(Element, _Opts) -> +overview(Element, Opts) -> XML = layout_chapter(Element), - xmerl:export_simple([XML], docgen_xmerl_xml_cb, []). + RootAttributes = root_attributes(Element, Opts), + xmerl:export_simple([XML], docgen_xmerl_xml_cb, RootAttributes). %%--Internal functions-------------------------------------------------- @@ -99,6 +101,16 @@ layout_module(#xmlElement{name = module, content = Es}=E, SortP) -> ?NL,Authors] }. +root_attributes(Element, Opts) -> + Encoding = case get_attrval(encoding, Element) of + "" -> + DefaultEncoding = epp:default_encoding(), + proplists:get_value(encoding, Opts, DefaultEncoding); + Enc -> + Enc + end, + [#xmlAttribute{name=encoding, value=Encoding}]. + layout_chapter(#xmlElement{name=overview, content=Es}) -> Title = get_text(title, Es), Header = {header, [ diff --git a/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl b/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl index 884932ed12..253019ffd6 100644 --- a/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl +++ b/lib/erl_docgen/src/docgen_xmerl_xml_cb.erl @@ -35,9 +35,14 @@ '#xml-inheritance#'() -> [xmerl_xml]. -'#root#'(Data, _Attrs, [], _E) -> +'#root#'(Data, Attrs, [], _E) -> + Encoding = + case [E || #xmlAttribute{name = encoding, value = E} <- Attrs] of + [E] -> E; + _ -> atom_to_list(epp:default_encoding()) + end, ["<",DTD,">"] = hd(hd(Data)), - ["<?xml version=\"1.0\" encoding=\"latin1\" ?>\n", + ["<?xml version=\"1.0\" encoding=\"",Encoding,"\" ?>\n", "<!DOCTYPE "++DTD++" SYSTEM \""++DTD++".dtd\">\n", Data]. diff --git a/lib/kernel/doc/src/file.xml b/lib/kernel/doc/src/file.xml index 89190d8668..536b98b5f5 100644 --- a/lib/kernel/doc/src/file.xml +++ b/lib/kernel/doc/src/file.xml @@ -110,7 +110,7 @@ <desc> <p>As returned by <seealso marker="#open/2">file:open/2</seealso>, - a process handling IO protocols.</p> + a process handling I/O-protocols.</p> </desc> </datatype> <datatype> @@ -261,6 +261,9 @@ {person, "pelle", 30}.</code> <pre>1> <input>file:consult("f.txt").</input> {ok,[{person,"kalle",25},{person,"pelle",30}]}</pre> + <p>The encoding of of <c><anno>Filename</anno></c> can be set + by a comment as described in <seealso + marker="stdlib:epp#encoding">epp(3)</seealso>.</p> </desc> </func> <func> @@ -399,6 +402,9 @@ of the error.</p> </item> </taglist> + <p>The encoding of of <c><anno>Filename</anno></c> can be set + by a comment as described in <seealso + marker="stdlib:epp#encoding">epp(3)</seealso>.</p> </desc> </func> <func> @@ -865,6 +871,9 @@ the error.</p> </item> </taglist> + <p>The encoding of of <c><anno>Filename</anno></c> can be set + by a comment as described in <seealso + marker="stdlib:epp#encoding">epp(3)</seealso>.</p> </desc> </func> <func> @@ -906,6 +915,9 @@ of the error.</p> </item> </taglist> + <p>The encoding of of <c><anno>Filename</anno></c> can be set + by a comment as described in <seealso + marker="stdlib:epp#encoding">epp(3)</seealso>.</p> </desc> </func> <func> @@ -975,7 +987,10 @@ of the error.</p> </item> </taglist> - </desc> + <p>The encoding of of <c><anno>Filename</anno></c> can be set + by a comment as described in <seealso + marker="stdlib:epp#encoding">epp(3)</seealso>.</p> + </desc> </func> <func> <name name="path_script" arity="3"/> @@ -1506,6 +1521,9 @@ of the error.</p> </item> </taglist> + <p>The encoding of of <c><anno>Filename</anno></c> can be set + by a comment as described in <seealso + marker="stdlib:epp#encoding">epp(3)</seealso>.</p> </desc> </func> <func> diff --git a/lib/kernel/src/file.erl b/lib/kernel/src/file.erl index 4f7c984b11..de3eaad5a1 100644 --- a/lib/kernel/src/file.erl +++ b/lib/kernel/src/file.erl @@ -1315,6 +1315,7 @@ sendfile_send(Sock, Data, Old) -> %%% Helpers consult_stream(Fd) -> + _ = epp:set_encoding(Fd), consult_stream(Fd, 1, []). consult_stream(Fd, Line, Acc) -> @@ -1328,6 +1329,7 @@ consult_stream(Fd, Line, Acc) -> end. eval_stream(Fd, Handling, Bs) -> + _ = epp:set_encoding(Fd), eval_stream(Fd, Handling, 1, undefined, [], Bs). eval_stream(Fd, H, Line, Last, E, Bs) -> diff --git a/lib/kernel/src/file_io_server.erl b/lib/kernel/src/file_io_server.erl index 0bff56cf46..acaffe1e41 100644 --- a/lib/kernel/src/file_io_server.erl +++ b/lib/kernel/src/file_io_server.erl @@ -40,6 +40,8 @@ format_error({_Line, ?MODULE, Reason}) -> io_lib:format("~w", [Reason]); format_error({_Line, Mod, Reason}) -> Mod:format_error(Reason); +format_error(invalid_unicode) -> + io_lib:format("cannot translate from UTF-8", []); format_error(ErrorId) -> erl_posix_msg:message(ErrorId). @@ -549,7 +551,7 @@ get_chars_notempty(Mod, Func, XtraArg, S, OutEnc, <<>> -> get_chars_apply(Mod, Func, XtraArg, S, OutEnc, State, eof); _ -> - {stop,invalid_unicode,{error,invalid_unicode},State} + {stop,invalid_unicode,invalid_unicode_error(Mod, Func, XtraArg, S),State} end; {error,Reason}=Error -> {stop,Reason,Error,State} @@ -616,12 +618,22 @@ get_chars_apply(Mod, Func, XtraArg, S0, OutEnc, end catch exit:ExReason -> - {stop,ExReason,{error,err_func(Mod, Func, XtraArg)},State}; + {stop,ExReason,invalid_unicode_error(Mod, Func, XtraArg, S0),State}; error:ErrReason -> {stop,ErrReason,{error,err_func(Mod, Func, XtraArg)},State} end. - +%% A hack that tries to inform the caller about the position where the +%% error occured. +invalid_unicode_error(Mod, Func, XtraArg, S) -> + try + {erl_scan,tokens,_Args} = XtraArg, + Location = erl_scan:continuation_location(S), + {error,{Location, ?MODULE, invalid_unicode},Location} + catch + _:_ -> + {error,err_func(Mod, Func, XtraArg)} + end. %% Convert error code to make it look as before err_func(io_lib, get_until, {_,F,_}) -> diff --git a/lib/kernel/src/group.erl b/lib/kernel/src/group.erl index f92c6f7208..4d2e31a429 100644 --- a/lib/kernel/src/group.erl +++ b/lib/kernel/src/group.erl @@ -424,7 +424,7 @@ get_password_chars(Drv,Buf) -> end. get_chars(Prompt, M, F, Xa, Drv, Buf, Encoding) -> - Pbs = prompt_bytes(Prompt), + Pbs = prompt_bytes(Prompt, Encoding), get_chars_loop(Pbs, M, F, Xa, Drv, Buf, start, Encoding). get_chars_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) -> @@ -688,9 +688,9 @@ edit_password([Char|Cs],Chars) -> edit_password(Cs,[Char|Chars]). %% prompt_bytes(Prompt) -%% Return a flat list of bytes for the Prompt. -prompt_bytes(Prompt) -> - lists:flatten(io_lib:format_prompt(Prompt)). +%% Return a flat list of characters for the Prompt. +prompt_bytes(Prompt, Encoding) -> + lists:flatten(io_lib:format_prompt(Prompt, Encoding)). cast(L, binary,latin1) when is_list(L) -> list_to_binary(L); diff --git a/lib/kernel/src/user.erl b/lib/kernel/src/user.erl index 88f32df20b..d6449d9e5e 100644 --- a/lib/kernel/src/user.erl +++ b/lib/kernel/src/user.erl @@ -81,7 +81,7 @@ server(PortName,PortSettings) -> run(P) -> put(read_mode,list), - put(unicode,false), + put(encoding,latin1), case init:get_argument(noshell) of %% non-empty list -> noshell {ok, [_|_]} -> @@ -191,39 +191,27 @@ do_io_request(Req, From, ReplyAs, Port, Q0) -> %% New in R13B %% Encoding option (unicode/latin1) io_request({put_chars,unicode,Chars}, Port, Q) -> % Binary new in R9C - put_chars(wrap_characters_to_binary(Chars,unicode, - case get(unicode) of - true -> unicode; - _ -> latin1 - end), Port, Q); + put_chars(wrap_characters_to_binary(Chars,unicode, get(encoding)), Port, Q); io_request({put_chars,unicode,Mod,Func,Args}, Port, Q) -> Result = case catch apply(Mod,Func,Args) of Data when is_list(Data); is_binary(Data) -> - wrap_characters_to_binary(Data,unicode, - case get(unicode) of - true -> unicode; - _ -> latin1 - end); + wrap_characters_to_binary(Data,unicode,get(encoding)); Undef -> Undef end, put_chars(Result, Port, Q); io_request({put_chars,latin1,Chars}, Port, Q) -> % Binary new in R9C - Data = case get(unicode) of - true -> + Data = case get(encoding) of + unicode -> unicode:characters_to_binary(Chars,latin1,unicode); - false -> + latin1 -> erlang:iolist_to_binary(Chars) end, put_chars(Data, Port, Q); io_request({put_chars,latin1,Mod,Func,Args}, Port, Q) -> Result = case catch apply(Mod,Func,Args) of Data when is_list(Data); is_binary(Data) -> - unicode:characters_to_binary(Data,latin1, - case get(unicode) of - true -> unicode; - _ -> latin1 - end); + unicode:characters_to_binary(Data,latin1,get(encoding)); Undef -> Undef end, @@ -351,9 +339,9 @@ check_valid_opts(_) -> do_setopts(Opts, _Port, Q) -> case proplists:get_value(encoding,Opts) of Valid when Valid =:= unicode; Valid =:= utf8 -> - put(unicode,true); + put(encoding,unicode); latin1 -> - put(unicode,false); + put(encoding,latin1); undefined -> ok end, @@ -370,12 +358,7 @@ do_setopts(Opts, _Port, Q) -> getopts(_Port,Q) -> Bin = {binary, get(read_mode) =:= binary}, - Uni = {encoding, case get(unicode) of - true -> - unicode; - _ -> - latin1 - end}, + Uni = {encoding, get(encoding)}, {ok,[Bin,Uni],Q}. @@ -575,31 +558,32 @@ binrev(L, T) -> %% end %% end %% end. -%% get_chars(Prompt, Module, Function, XtraArg, Port, Queue) +%% get_chars(Prompt, Module, Function, XtraArg, Port, Queue, Encoding) %% Gets characters from the input port until the applied function %% returns {stop,Result,RestBuf}. Does not block output until input -%% has been received. +%% has been received. Encoding is the encoding of the data sent to +%% the client and to Function. %% Returns: %% {Status,Result,NewQueue} %% {exit,Reason} %% Entry function. -get_chars(Prompt, M, F, Xa, Port, Q, Fmt) -> +get_chars(Prompt, M, F, Xa, Port, Q, Enc) -> prompt(Port, Prompt), case {get(eof),queue:is_empty(Q)} of {true,true} -> {ok,eof,Q}; _ -> - get_chars(Prompt, M, F, Xa, Port, Q, start, Fmt) + get_chars(Prompt, M, F, Xa, Port, Q, start, Enc) end. %% First loop. Wait for port data. Respond to output requests. -get_chars(Prompt, M, F, Xa, Port, Q, State, Fmt) -> +get_chars(Prompt, M, F, Xa, Port, Q, State, Enc) -> case queue:is_empty(Q) of true -> receive {Port,{data,Bytes}} -> - get_chars_bytes(State, M, F, Xa, Port, Q, Bytes, Fmt); + get_chars_bytes(State, M, F, Xa, Port, Q, Bytes, Enc); {Port, eof} -> put(eof, true), {ok, eof, []}; @@ -610,41 +594,41 @@ get_chars(Prompt, M, F, Xa, Port, Q, State, Fmt) -> do_io_request(Req, From, ReplyAs, Port, queue:new()), %Keep Q over this call %% No prompt. - get_chars(Prompt, M, F, Xa, Port, Q, State, Fmt); + get_chars(Prompt, M, F, Xa, Port, Q, State, Enc); {io_request,From,ReplyAs,Request} when is_pid(From) -> get_chars_req(Prompt, M, F, Xa, Port, Q, State, - Request, From, ReplyAs, Fmt); + Request, From, ReplyAs, Enc); {'EXIT',From,What} when node(From) =:= node() -> {exit,What} end; false -> - get_chars_apply(State, M, F, Xa, Port, Q, Fmt) + get_chars_apply(State, M, F, Xa, Port, Q, Enc) end. get_chars_req(Prompt, M, F, XtraArg, Port, Q, State, - Req, From, ReplyAs, Fmt) -> + Req, From, ReplyAs, Enc) -> do_io_request(Req, From, ReplyAs, Port, queue:new()), %Keep Q over this call prompt(Port, Prompt), - get_chars(Prompt, M, F, XtraArg, Port, Q, State, Fmt). + get_chars(Prompt, M, F, XtraArg, Port, Q, State, Enc). %% Second loop. Pass data to client as long as it wants more. %% A ^G in data interrupts loop if 'noshell' is not undefined. -get_chars_bytes(State, M, F, Xa, Port, Q, Bytes, Fmt) -> +get_chars_bytes(State, M, F, Xa, Port, Q, Bytes, Enc) -> case get(shell) of noshell -> - get_chars_apply(State, M, F, Xa, Port, queue:snoc(Q, Bytes),Fmt); + get_chars_apply(State, M, F, Xa, Port, queue:snoc(Q, Bytes),Enc); _ -> case contains_ctrl_g_or_ctrl_c(Bytes) of false -> get_chars_apply(State, M, F, Xa, Port, - queue:snoc(Q, Bytes),Fmt); + queue:snoc(Q, Bytes),Enc); _ -> throw(new_shell) end end. -get_chars_apply(State0, M, F, Xa, Port, Q, Fmt) -> - case catch M:F(State0, cast(queue:head(Q),Fmt), Fmt, Xa) of +get_chars_apply(State0, M, F, Xa, Port, Q, Enc) -> + case catch M:F(State0, cast(queue:head(Q),Enc), Enc, Xa) of {stop,Result,<<>>} -> {ok,Result,queue:tail(Q)}; {stop,Result,[]} -> @@ -653,32 +637,32 @@ get_chars_apply(State0, M, F, Xa, Port, Q, Fmt) -> {ok,Result,queue:tail(Q)}; {stop,Result,Buf} -> {ok,Result,queue:cons(Buf, queue:tail(Q))}; - {'EXIT',_} -> + {'EXIT',_Why} -> {error,{error,err_func(M, F, Xa)},queue:new()}; State1 -> - get_chars_more(State1, M, F, Xa, Port, queue:tail(Q), Fmt) + get_chars_more(State1, M, F, Xa, Port, queue:tail(Q), Enc) end. -get_chars_more(State, M, F, Xa, Port, Q, Fmt) -> +get_chars_more(State, M, F, Xa, Port, Q, Enc) -> case queue:is_empty(Q) of true -> case get(eof) of undefined -> receive {Port,{data,Bytes}} -> - get_chars_bytes(State, M, F, Xa, Port, Q, Bytes, Fmt); + get_chars_bytes(State, M, F, Xa, Port, Q, Bytes, Enc); {Port,eof} -> put(eof, true), get_chars_apply(State, M, F, Xa, Port, - queue:snoc(Q, eof), Fmt); + queue:snoc(Q, eof), Enc); {'EXIT',From,What} when node(From) =:= node() -> {exit,What} end; _ -> - get_chars_apply(State, M, F, Xa, Port, queue:snoc(Q, eof), Fmt) + get_chars_apply(State, M, F, Xa, Port, queue:snoc(Q, eof), Enc) end; false -> - get_chars_apply(State, M, F, Xa, Port, Q, Fmt) + get_chars_apply(State, M, F, Xa, Port, Q, Enc) end. @@ -689,11 +673,10 @@ get_chars_more(State, M, F, Xa, Port, Q, Fmt) -> prompt(_Port, '') -> ok; prompt(Port, Prompt) -> - put_port(wrap_characters_to_binary(io_lib:format_prompt(Prompt),unicode, - case get(unicode) of - true -> unicode; - _ -> latin1 - end), Port). + Encoding = get(encoding), + put_port(wrap_characters_to_binary(io_lib:format_prompt(Prompt, Encoding), + unicode, Encoding), + Port). %% Convert error code to make it look as before err_func(io_lib, get_until, {_,F,_}) -> @@ -710,56 +693,65 @@ contains_ctrl_g_or_ctrl_c(BinOrList)-> end. %% Convert a buffer between list and binary -cast(Data, _Format) when is_atom(Data) -> +cast(Data, _Encoding) when is_atom(Data) -> Data; -cast(Data, Format) -> - cast(Data, get(read_mode), Format, get(unicode)). +cast(Data, Encoding) -> + IoEncoding = get(encoding), + cast(Data, get(read_mode), IoEncoding, Encoding). -cast(B, binary, latin1, false) when is_binary(B) -> +cast(B, binary, latin1, latin1) when is_binary(B) -> B; -cast(B, binary, latin1, true) when is_binary(B) -> - unicode:characters_to_binary(B, unicode, latin1); -cast(L, binary, latin1, false) -> - erlang:iolist_to_binary(L); -cast(L, binary, latin1, true) -> - case unicode:characters_to_binary( - erlang:iolist_to_binary(L),unicode,latin1) of % may fail - {error,_,_} -> exit({no_translation, unicode, latin1}); - Else -> Else +cast(L, binary, latin1, latin1) -> + case catch erlang:iolist_to_binary(L) of + Bin when is_binary(Bin) -> Bin; + _ -> exit({no_translation, latin1, latin1}) + end; +cast(Data, binary, unicode, latin1) when is_binary(Data); is_list(Data) -> + case catch unicode:characters_to_binary(Data, unicode, latin1) of + Bin when is_binary(Bin) -> Bin; + _ -> exit({no_translation, unicode, latin1}) + end; +cast(Data, binary, latin1, unicode) when is_binary(Data); is_list(Data) -> + case catch unicode:characters_to_binary(Data, latin1, unicode) of + Bin when is_binary(Bin) -> Bin; + _ -> exit({no_translation, latin1, unicode}) end; -cast(B, binary, unicode, true) when is_binary(B) -> +cast(B, binary, unicode, unicode) when is_binary(B) -> B; -cast(B, binary, unicode, false) when is_binary(B) -> - unicode:characters_to_binary(B,latin1,unicode); -cast(L, binary, unicode, true) -> - % possibly a list containing UTF-8 encoded characters - unicode:characters_to_binary(erlang:iolist_to_binary(L)); -cast(L, binary, unicode, false) -> - unicode:characters_to_binary(L, latin1, unicode); -cast(L, list, latin1, UniTerm) -> - case UniTerm of - true -> % Convert input characters to protocol format (i.e latin1) - case unicode:characters_to_list( - erlang:iolist_to_binary(L),unicode) of % may fail - {error,_,_} -> exit({no_translation, unicode, latin1}); - Else -> [ case X of - High when High > 255 -> - exit({no_translation, unicode, latin1}); - Low -> - Low - end || X <- Else ] - end; - _ -> - binary_to_list(erlang:iolist_to_binary(L)) +cast(L, binary, unicode, unicode) -> + case catch unicode:characters_to_binary(L, unicode) of + Bin when is_binary(Bin) -> Bin; + _ -> exit({no_translation, unicode, unicode}) end; -cast(L, list, unicode, UniTerm) -> - unicode:characters_to_list(erlang:iolist_to_binary(L), - case UniTerm of - true -> unicode; - _ -> latin1 - end); -cast(Other, _, _,_) -> - Other. +cast(B, list, latin1, latin1) when is_binary(B) -> + binary_to_list(B); +cast(L, list, latin1, latin1) -> + case catch erlang:iolist_to_binary(L) of + Bin when is_binary(Bin) -> binary_to_list(Bin); + _ -> exit({no_translation, latin1, latin1}) + end; +cast(Data, list, unicode, latin1) when is_binary(Data); is_list(Data) -> + case catch unicode:characters_to_list(Data, unicode) of + Chars when is_list(Chars) -> + [ case X of + High when High > 255 -> + exit({no_translation, unicode, latin1}); + Low -> + Low + end || X <- Chars ]; + _ -> + exit({no_translation, unicode, latin1}) + end; +cast(Data, list, latin1, unicode) when is_binary(Data); is_list(Data) -> + case catch unicode:characters_to_list(Data, latin1) of + Chars when is_list(Chars) -> Chars; + _ -> exit({no_translation, latin1, unicode}) + end; +cast(Data, list, unicode, unicode) when is_binary(Data); is_list(Data) -> + case catch unicode:characters_to_list(Data, unicode) of + Chars when is_list(Chars) -> Chars; + _ -> exit({no_translation, unicode, unicode}) + end. wrap_characters_to_binary(Chars,unicode,latin1) -> case unicode:characters_to_binary(Chars,unicode,latin1) of diff --git a/lib/parsetools/include/yeccpre.hrl b/lib/parsetools/include/yeccpre.hrl index 3672394fc5..e4c3ba52be 100644 --- a/lib/parsetools/include/yeccpre.hrl +++ b/lib/parsetools/include/yeccpre.hrl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -36,7 +36,7 @@ parse_and_scan({M, F, A}) -> -spec format_error(any()) -> [char() | list()]. format_error(Message) -> - case io_lib:deep_char_list(Message) of + case io_lib:deep_unicode_char_list(Message) of true -> Message; _ -> @@ -164,7 +164,7 @@ yecctoken_location(Token) -> yecctoken2string({atom, _, A}) -> io_lib:write(A); yecctoken2string({integer,_,N}) -> io_lib:write(N); yecctoken2string({float,_,F}) -> io_lib:write(F); -yecctoken2string({char,_,C}) -> io_lib:write_char(C); +yecctoken2string({char,_,C}) -> io_lib:write_unicode_char(C); yecctoken2string({var,_,V}) -> io_lib:format("~s", [V]); yecctoken2string({string,_,S}) -> io_lib:write_unicode_string(S); yecctoken2string({reserved_symbol, _, A}) -> io_lib:write(A); diff --git a/lib/parsetools/src/leex.erl b/lib/parsetools/src/leex.erl index cdf20461d9..bbef4053b4 100644 --- a/lib/parsetools/src/leex.erl +++ b/lib/parsetools/src/leex.erl @@ -58,6 +58,7 @@ gfile=[], % Graph file module, % Module name opts=[], % Options + encoding=none, % Encoding of Xrl file % posix=false, % POSIX regular expressions errors=[], warnings=[] @@ -146,7 +147,9 @@ format_error({regexp,E})-> end, ["bad regexp `",Es,"'"]; format_error(ignored_characters) -> - "ignored characters". + "ignored characters"; +format_error(cannot_parse) -> + io_lib:fwrite("cannot parse; probably encoding mismatch", []). %%% %%% Local functions @@ -298,10 +301,10 @@ pack_warnings([]) -> report_errors(St) -> when_opt(fun () -> foreach(fun({File,{none,Mod,E}}) -> - io:fwrite("~s: ~s\n", + io:fwrite("~s: ~ts\n", [File,Mod:format_error(E)]); ({File,{Line,Mod,E}}) -> - io:fwrite("~s:~w: ~s\n", + io:fwrite("~s:~w: ~ts\n", [File,Line,Mod:format_error(E)]) end, sort(St#leex.errors)) end, report_errors, St#leex.opts). @@ -316,11 +319,11 @@ report_warnings(St) -> ShouldReport = member(report_warnings, St#leex.opts) orelse ReportWerror, when_bool(fun () -> foreach(fun({File,{none,Mod,W}}) -> - io:fwrite("~s: ~s~s\n", + io:fwrite("~s: ~s~ts\n", [File,Prefix, Mod:format_error(W)]); ({File,{Line,Mod,W}}) -> - io:fwrite("~s:~w: ~s~s\n", + io:fwrite("~s:~w: ~s~ts\n", [File,Line,Prefix, Mod:format_error(W)]) end, sort(St#leex.warnings)) @@ -396,17 +399,18 @@ verbose_print(St, Format, Args) -> parse_file(St0) -> case file:open(St0#leex.xfile, [read]) of {ok,Xfile} -> + St1 = St0#leex{encoding = epp:set_encoding(Xfile)}, try - verbose_print(St0, "Parsing file ~s, ", [St0#leex.xfile]), + verbose_print(St1, "Parsing file ~s, ", [St1#leex.xfile]), %% We KNOW that errors throw so we can ignore them here. - {ok,Line1,St1} = parse_head(Xfile, St0), - {ok,Line2,Macs,St2} = parse_defs(Xfile, Line1, St1), - {ok,Line3,REAs,Actions,St3} = - parse_rules(Xfile, Line2, Macs, St2), - {ok,Code,St4} = parse_code(Xfile, Line3, St3), - verbose_print(St1, "contained ~w rules.~n", [length(REAs)]), - {ok,REAs,Actions,Code,St4} - after file:close(Xfile) + {ok,Line1,St2} = parse_head(Xfile, St1), + {ok,Line2,Macs,St3} = parse_defs(Xfile, Line1, St2), + {ok,Line3,REAs,Actions,St4} = + parse_rules(Xfile, Line2, Macs, St3), + {ok,Code,St5} = parse_code(Xfile, Line3, St4), + verbose_print(St5, "contained ~w rules.~n", [length(REAs)]), + {ok,REAs,Actions,Code,St5} + after ok = file:close(Xfile) end; {error,Error} -> add_error({none,leex,{file_error,Error}}, St0) @@ -415,7 +419,7 @@ parse_file(St0) -> %% parse_head(File, State) -> {ok,NextLine,State}. %% Parse the head of the file. Skip all comments and blank lines. -parse_head(Ifile, St) -> {ok,nextline(Ifile, 0),St}. +parse_head(Ifile, St) -> {ok,nextline(Ifile, 0, St),St}. %% parse_defs(File, Line, State) -> {ok,NextLine,Macros,State}. %% Parse the macro definition section of a file. This must exist. @@ -423,7 +427,7 @@ parse_head(Ifile, St) -> {ok,nextline(Ifile, 0),St}. parse_defs(Ifile, {ok,?DEFS_HEAD ++ Rest,L}, St) -> St1 = warn_ignored_chars(L, Rest, St), - parse_defs(Ifile, nextline(Ifile, L), [], St1); + parse_defs(Ifile, nextline(Ifile, L, St), [], St1); parse_defs(_, {ok,_,L}, St) -> add_error({L,leex,missing_defs}, St); parse_defs(_, {eof,L}, St) -> @@ -435,7 +439,7 @@ parse_defs(Ifile, {ok,Chars,L}=Line, Ms, St) -> case re:run(Chars, MS, [{capture,all_but_first,list}]) of {match,[Name,Def]} -> %%io:fwrite("~p = ~p\n", [Name,Def]), - parse_defs(Ifile, nextline(Ifile, L), [{Name,Def}|Ms], St); + parse_defs(Ifile, nextline(Ifile, L, St), [{Name,Def}|Ms], St); _ -> {ok,Line,Ms,St} % Anything else end; parse_defs(_, Line, Ms, St) -> @@ -446,7 +450,7 @@ parse_defs(_, Line, Ms, St) -> parse_rules(Ifile, {ok,?RULE_HEAD ++ Rest,L}, Ms, St) -> St1 = warn_ignored_chars(L, Rest, St), - parse_rules(Ifile, nextline(Ifile, L), Ms, [], [], 0, St1); + parse_rules(Ifile, nextline(Ifile, L, St), Ms, [], [], 0, St1); parse_rules(_, {ok,_,L}, _, St) -> add_error({L,leex,missing_rules}, St); parse_rules(_, {eof,L}, _, St) -> @@ -464,7 +468,7 @@ parse_rules(Ifile, NextLine, Ms, REAs, As, N, St) -> case collect_rule(Ifile, Chars, L0) of {ok,Re,Atoks,L1} -> {ok,REA,A,St1} = parse_rule(Re, L0, Atoks, Ms, N, St), - parse_rules(Ifile, nextline(Ifile, L1), Ms, + parse_rules(Ifile, nextline(Ifile, L1, St), Ms, [REA|REAs], [A|As], N+1, St1); {error,E} -> add_error(E, St) end; @@ -497,8 +501,10 @@ collect_rule(Ifile, Chars, L0) -> {error,E,_} -> {error,E} end. +collect_action(_Ifile, {error, _}, L, _Cont0) -> + {error, {L, leex, cannot_parse}, ignored_end_line}; collect_action(Ifile, Chars, L0, Cont0) -> - case erl_scan:tokens(Cont0, Chars, L0) of + case erl_scan:tokens(Cont0, Chars, L0, [unicode]) of {done,{ok,Toks,_},_} -> {ok,Toks,L0}; {done,{eof,_},_} -> {eof,L0}; {done,{error,E,_},_} -> {error,E,L0}; @@ -560,29 +566,32 @@ parse_code(Ifile, {ok,?CODE_HEAD ++ Rest,CodeL}, St) -> St1 = warn_ignored_chars(CodeL, Rest, St), {ok, CodePos} = file:position(Ifile, cur), %% Just count the lines; copy the code from file to file later. - NCodeLines = count_lines(Ifile, 0), + EndCodeLine = count_lines(Ifile, CodeL, St), + NCodeLines = EndCodeLine - CodeL, {ok,{CodeL,CodePos,NCodeLines},St1}; parse_code(_, {ok,_,L}, St) -> add_error({L,leex,missing_code}, St); parse_code(_, {eof,L}, St) -> add_error({L,leex,missing_code}, St). -count_lines(File, N) -> +count_lines(File, N, St) -> case io:get_line(File, leex) of eof -> N; - _Line -> count_lines(File, N+1) + {error, _} -> add_error({N+1, leex, cannot_parse}, St); + _Line -> count_lines(File, N+1, St) end. -%% nextline(InputFile, PrevLineNo) -> {ok,Chars,LineNo} | {eof,LineNo}. +%% nextline(InputFile, PrevLineNo, State) -> {ok,Chars,LineNo} | {eof,LineNo}. %% Get the next line skipping comment lines and blank lines. -nextline(Ifile, L) -> +nextline(Ifile, L, St) -> case io:get_line(Ifile, leex) of eof -> {eof,L}; + {error, _} -> add_error({L+1, leex, cannot_parse}, St); Chars -> case substr(Chars, span(Chars, " \t\n")+1) of - [$%|_Rest] -> nextline(Ifile, L+1); - [] -> nextline(Ifile, L+1); + [$%|_Rest] -> nextline(Ifile, L+1, St); + [] -> nextline(Ifile, L+1, St); _Other -> {ok,Chars,L+1} end end. @@ -1289,19 +1298,21 @@ out_file(St0, DFA, DF, Actions, Code) -> try case file:open(St0#leex.efile, [write]) of {ok,Ofile} -> + set_encoding(St0, Ofile), try + output_encoding_comment(Ofile, St0), output_file_directive(Ofile, St0#leex.ifile, 0), out_file(Ifile, Ofile, St0, DFA, DF, Actions, Code, 1), verbose_print(St0, "ok~n", []), St0 - after file:close(Ofile) + after ok = file:close(Ofile) end; {error,Error} -> verbose_print(St0, "error~n", []), add_error({none,leex,{file_error,Error}}, St0) end - after file:close(Ifile) + after ok = file:close(Ifile) end; {{error,Error},Ifile} -> add_error(Ifile, {none,leex,{file_error,Error}}, St0) @@ -1310,7 +1321,9 @@ out_file(St0, DFA, DF, Actions, Code) -> open_inc_file(State) -> Ifile = State#leex.ifile, case file:open(Ifile, [read]) of - {ok,F} -> {ok,F}; + {ok,F} -> + _ = epp:set_encoding(F), + {ok,F}; Error -> {Error,Ifile} end. @@ -1328,6 +1341,7 @@ inc_file_name(Filename) -> out_file(Ifile, Ofile, St, DFA, DF, Actions, Code, L) -> case io:get_line(Ifile, leex) of eof -> output_file_directive(Ofile, St#leex.ifile, L); + {error, _} -> add_error(St#leex.ifile, {L, leex, cannot_parse}, St); Line -> case substr(Line, 1, 5) of "##mod" -> out_module(Ofile, St); @@ -1347,14 +1361,23 @@ out_erlang_code(File, St, Code, L) -> output_file_directive(File, St#leex.xfile, CodeL), {ok,Xfile} = file:open(St#leex.xfile, [read]), try + set_encoding(St, Xfile), {ok,_} = file:position(Xfile, CodePos), - {ok,_} = file:copy(Xfile, File) + ok = file_copy(Xfile, File) after - file:close(Xfile) + ok = file:close(Xfile) end, io:nl(File), output_file_directive(File, St#leex.ifile, L). +file_copy(From, To) -> + case io:get_line(From, leex) of + eof -> ok; + Line when is_list(Line) -> + io:fwrite(To, "~ts", [Line]), + file_copy(From, To) + end. + out_dfa(File, St, DFA, Code, DF, L) -> {_CodeL,_CodePos,NCodeLines} = Code, %% Three file attributes before this one... @@ -1569,7 +1592,7 @@ out_dfa_graph(St, DFA, DF) -> io:fwrite(Gfile, "}~n", []), verbose_print(St, "ok~n", []), St - after file:close(Gfile) + after ok = file:close(Gfile) end; {error,Error} -> verbose_print(St, "error~n", []), @@ -1610,6 +1633,16 @@ dfa_edgelabel(Cranges) -> (C) -> [quote(C)] end, Cranges) ++ "]". +set_encoding(#leex{encoding = none}, File) -> + ok = io:setopts(File, [{encoding, epp:default_encoding()}]); +set_encoding(#leex{encoding = E}, File) -> + ok = io:setopts(File, [{encoding, E}]). + +output_encoding_comment(_File, #leex{encoding = none}) -> + ok; +output_encoding_comment(File, #leex{encoding = Encoding}) -> + io:fwrite(File, <<"%% ~s\n">>, [epp:encoding_to_string(Encoding)]). + output_file_directive(File, Filename, Line) -> io:fwrite(File, <<"-file(~s, ~w).\n">>, [format_filename(Filename), Line]). diff --git a/lib/parsetools/src/yecc.erl b/lib/parsetools/src/yecc.erl index b0792a6ed8..dbb7d025ae 100644 --- a/lib/parsetools/src/yecc.erl +++ b/lib/parsetools/src/yecc.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -42,6 +42,7 @@ includefile, includefile_version, module, + encoding = none, options = [], verbose = false, file_attrs = true, @@ -224,7 +225,11 @@ format_error({unused_nonterminal, Nonterminal}) -> [format_symbol(Nonterminal)]); format_error({unused_terminal, Terminal}) -> io_lib:fwrite("terminal symbol ~s not used", - [format_symbol(Terminal)]). + [format_symbol(Terminal)]); +format_error({bad_symbol, String}) -> + io_lib:fwrite("bad symbol ~ts", [String]); +format_error(cannot_parse) -> + io_lib:fwrite("cannot parse; possibly encoding mismatch", []). file(File) -> file(File, [report_errors, report_warnings]). @@ -257,7 +262,7 @@ yecc(Infile, Outfile, Verbose) -> yecc(Infile, Outfile, Verbose, []). yecc(Infilex, Outfilex, Verbose, Includefilex) -> - statistics(runtime), + _ = statistics(runtime), case file(Infilex, [{parserfile, Outfilex}, {verbose, Verbose}, {report, true}, @@ -407,7 +412,9 @@ infile(Parent, Infilex, Options) -> St = case file:open(St0#yecc.infile, [read, read_ahead]) of {ok, Inport} -> try - outfile(St0#yecc{inport = Inport}) + Encoding = epp:set_encoding(Inport), + St1 = St0#yecc{inport = Inport, encoding = Encoding}, + outfile(St1) after ok = file:close(Inport) end; @@ -428,6 +435,8 @@ outfile(St0) -> case file:open(St0#yecc.outfile, [write, delayed_write]) of {ok, Outport} -> try + %% Set the same encoding as infile: + set_encoding(St0, Outport), generate(St0#yecc{outport = Outport, line = 1}) catch throw: St1 -> @@ -466,13 +475,14 @@ timeit(Name, Fun, St0) -> -define(PASS(P), {P, fun P/1}). generate(St0) -> + St1 = output_encoding_comment(St0), Passes = [?PASS(parse_grammar), ?PASS(check_grammar), ?PASS(states_and_goto_table), ?PASS(parse_actions), ?PASS(action_conflicts), ?PASS(write_file)], - F = case member(time, St0#yecc.options) of + F = case member(time, St1#yecc.options) of true -> io:fwrite(<<"Generating parser from grammar in ~s\n">>, - [format_filename(St0#yecc.infile)]), + [format_filename(St1#yecc.infile)]), fun timeit/3; false -> fun(_Name, Fn, St) -> Fn(St) end @@ -484,13 +494,13 @@ generate(St0) -> true -> throw(St2) end end, - foldl(Fun, St0, Passes). + foldl(Fun, St1, Passes). parse_grammar(St) -> parse_grammar(St#yecc.inport, 1, St). parse_grammar(Inport, Line, St) -> - {NextLine, Grammar} = read_grammar(Inport, Line), + {NextLine, Grammar} = read_grammar(Inport, St, Line), parse_grammar(Grammar, Inport, NextLine, St). parse_grammar(eof, _Inport, _NextLine, St) -> @@ -523,6 +533,8 @@ parse_grammar({rule, Rule, Tokens}, St0) -> St#yecc{rules_list = [RuleDef | St#yecc.rules_list]}; parse_grammar({prec, Prec}, St) -> St#yecc{prec = Prec ++ St#yecc.prec}; +parse_grammar({#symbol{}, [{string,Line,String}]}, St) -> + add_error(Line, {bad_symbol, String}, St); parse_grammar({#symbol{line = Line, name = Name}, Symbols}, St) -> CF = fun(I) -> case element(I, St) of @@ -543,12 +555,17 @@ parse_grammar({#symbol{line = Line, name = Name}, Symbols}, St) -> _ -> add_warning(Line, bad_declaration, St) end. -read_grammar(Inport, Line) -> +read_grammar(Inport, St, Line) -> case yeccscan:scan(Inport, '', Line) of {eof, NextLine} -> {NextLine, eof}; {error, {ErrorLine, Mod, What}, NextLine} -> {NextLine, {error, ErrorLine, {error, Mod, What}}}; + {error, terminated} -> + throw(St); + {error, _} -> + File = St#yecc.infile, + throw(add_error(File, none, cannot_parse, St)); {ok, Input, NextLine} -> {NextLine, case yeccparser:parse(Input) of {error, {ErrorLine, Mod, Message}} -> @@ -738,9 +755,9 @@ states_and_goto_table(St0) -> create_precedence_table(St). parse_actions(St) -> - erase(), % the pd is used when decoding lookahead sets + _ = erase(), % the pd is used when decoding lookahead sets ParseActions = compute_parse_actions(St#yecc.n_states, St, []), - erase(), + _ = erase(), St#yecc{parse_actions = ParseActions, state_tab = []}. action_conflicts(St0) -> @@ -841,10 +858,10 @@ report_errors(St) -> case member(report_errors, St#yecc.options) of true -> foreach(fun({File,{none,Mod,E}}) -> - io:fwrite(<<"~s: ~s\n">>, + io:fwrite(<<"~s: ~ts\n">>, [File,Mod:format_error(E)]); ({File,{Line,Mod,E}}) -> - io:fwrite(<<"~s:~w: ~s\n">>, + io:fwrite(<<"~s:~w: ~ts\n">>, [File,Line,Mod:format_error(E)]) end, sort(St#yecc.errors)); false -> @@ -861,11 +878,11 @@ report_warnings(St) -> case member(report_warnings, St#yecc.options) orelse ReportWerror of true -> foreach(fun({File,{none,Mod,W}}) -> - io:fwrite(<<"~s: ~s~s\n">>, + io:fwrite(<<"~s: ~s~ts\n">>, [File,Prefix, Mod:format_error(W)]); ({File,{Line,Mod,W}}) -> - io:fwrite(<<"~s:~w: ~s~s\n">>, + io:fwrite(<<"~s:~w: ~s~ts\n">>, [File,Line,Prefix, Mod:format_error(W)]) end, sort(St#yecc.warnings)); @@ -1024,7 +1041,7 @@ compute_states(St0) -> rp_info = RulePointerInfo, goto = GotoTab}, - erase(), + _ = erase(), EndsymCode = code_terminal(StC#yecc.endsymbol, StC#yecc.symbol_tab), {StateId, State0} = compute_state([{EndsymCode, 1}], Tables), @@ -1923,9 +1940,10 @@ output_prelude(Outport, Inport, St0) when St0#yecc.includefile =:= [] -> {St20, 0, no_erlang_code}; Next_line -> St_10 = output_file_directive(St20, Infile, Next_line-1), - Nmbr_of_lines = include1([], Inport, Outport), - {St_10, Nmbr_of_lines, - {last_erlang_code_line, Next_line+Nmbr_of_lines}} + Last_line = include1([], Inport, Outport, Infile, + Next_line, St_10), + Nmbr_of_lines = Last_line - Next_line, + {St_10, Nmbr_of_lines, {last_erlang_code_line, Last_line}} end, St30 = nl(St25), IncludeFile = @@ -1946,13 +1964,13 @@ output_prelude(Outport, Inport, St0) -> {St30, N_lines_1, no_erlang_code}; Next_line -> St = output_file_directive(St30, Infile, Next_line-1), - Nmbr_of_lines = include1([], Inport, Outport), - {St, Nmbr_of_lines + N_lines_1, - {last_erlang_code_line, Next_line+Nmbr_of_lines}} + Last_line = include1([], Inport, Outport, Infile, Next_line, St), + Nmbr_of_lines = Last_line - Next_line, + {St, Nmbr_of_lines + N_lines_1, {last_erlang_code_line, Last_line}} end. output_header(St0) -> - lists:foldl(fun(Str, St) -> fwrite(St, <<"~s\n">>, [Str]) + lists:foldl(fun(Str, St) -> fwrite(St, <<"~ts\n">>, [Str]) end, St0, St0#yecc.header). output_goto(St, [{_Nonterminal, []} | Go], StateInfo) -> @@ -2250,8 +2268,8 @@ output_inlined(St0, FunctionName, Reduce, Infile) -> [append(["[", tl(A), " | __Stack]"])]) end, St = St40#yecc{line = St40#yecc.line + NLines}, - fwrite(St, <<" [begin\n ~s\n end | ~s].\n\n">>, - [pp_tokens(Tokens, Line0), Stack]). + fwrite(St, <<" [begin\n ~ts\n end | ~s].\n\n">>, + [pp_tokens(Tokens, Line0, St#yecc.encoding), Stack]). inlined_function_name(State, "Cat") -> inlined_function_name(State, ""); @@ -2421,24 +2439,24 @@ include(St, File, Outport) -> {error, Reason} -> throw(add_error(File, none, {file_error, Reason}, St)); {ok, Inport} -> + _ = epp:set_encoding(Inport), Line = io:get_line(Inport, ''), - N_lines = include1(Line, Inport, Outport), - file:close(Inport), - N_lines + try include1(Line, Inport, Outport, File, 1, St) - 1 + after ok = file:close(Inport) + end end. -include1(Line, Inport, Outport) -> - include1(Line, Inport, Outport, 0). - -include1(eof, _, _, Nmbr_of_lines) -> - Nmbr_of_lines; -include1(Line, Inport, Outport, Nmbr_of_lines) -> +include1(eof, _, _, _File, L, _St) -> + L; +include1({error, _}=_Error, _Inport, _Outport, File, L, St) -> + throw(add_error(File, L, cannot_parse, St)); +include1(Line, Inport, Outport, File, L, St) -> Incr = case member($\n, Line) of true -> 1; false -> 0 end, io:put_chars(Outport, Line), - include1(io:get_line(Inport, ''), Inport, Outport, Nmbr_of_lines + Incr). + include1(io:get_line(Inport, ''), Inport, Outport, File, L + Incr, St). includefile_version([]) -> {1,4}; @@ -2465,18 +2483,22 @@ parse_file(Epp) -> end. %% Keeps the line breaks of the original code. -pp_tokens(Tokens, Line0) -> - concat(pp_tokens1(Tokens, Line0, [])). +pp_tokens(Tokens, Line0, Enc) -> + concat(pp_tokens1(Tokens, Line0, Enc, [])). -pp_tokens1([], _Line0, _T0) -> +pp_tokens1([], _Line0, _Enc, _T0) -> []; -pp_tokens1([T | Ts], Line0, T0) -> +pp_tokens1([T | Ts], Line0, Enc, T0) -> Line = element(2, T), - [pp_sep(Line, Line0, T0), pp_symbol(T) | pp_tokens1(Ts, Line, T)]. + [pp_sep(Line, Line0, T0), pp_symbol(T, Enc)|pp_tokens1(Ts, Line, Enc, T)]. -pp_symbol({var,_,Var}) -> Var; -pp_symbol({_,_,Symbol}) -> io_lib:fwrite(<<"~p">>, [Symbol]); -pp_symbol({Symbol, _}) -> Symbol. +pp_symbol({var,_,Var}, _Enc) -> Var; +pp_symbol({string,_,String}, latin1) -> + io_lib:write_unicode_string_as_latin1(String); +pp_symbol({string,_,String}, _Enc) -> io_lib:write_unicode_string(String); +pp_symbol({_,_,Symbol}, latin1) -> io_lib:fwrite(<<"~p">>, [Symbol]); +pp_symbol({_,_,Symbol}, _Enc) -> io_lib:fwrite(<<"~tp">>, [Symbol]); +pp_symbol({Symbol, _}, _Enc) -> Symbol. pp_sep(Line, Line0, T0) when Line > Line0 -> ["\n " | pp_sep(Line - 1, Line0, T0)]; @@ -2485,6 +2507,16 @@ pp_sep(_Line, _Line0, {'.',_}) -> pp_sep(_Line, _Line0, _T0) -> " ". +set_encoding(#yecc{encoding = none}, Port) -> + ok = io:setopts(Port, [{encoding, epp:default_encoding()}]); +set_encoding(#yecc{encoding = E}, Port) -> + ok = io:setopts(Port, [{encoding, E}]). + +output_encoding_comment(#yecc{encoding = none}=St) -> + St; +output_encoding_comment(#yecc{encoding = Encoding}=St) -> + fwrite(St, <<"%% ~s\n">>, [epp:encoding_to_string(Encoding)]). + output_file_directive(St, Filename, Line) when St#yecc.file_attrs -> fwrite(St, <<"-file(~s, ~w).\n">>, [format_filename(Filename), Line]); @@ -2529,7 +2561,7 @@ format_assoc(nonassoc) -> format_symbol(Symbol) -> String = concat([Symbol]), - case erl_scan:string(String) of + case erl_scan:string(String, 1, [unicode]) of {ok, [{atom, _, _}], _} -> io_lib:fwrite(<<"~w">>, [Symbol]); {ok, [{Word, _}], _} when Word =/= ':', Word =/= '->' -> diff --git a/lib/parsetools/src/yeccscan.erl b/lib/parsetools/src/yeccscan.erl index d7ec3ba8d3..9e0e85143a 100644 --- a/lib/parsetools/src/yeccscan.erl +++ b/lib/parsetools/src/yeccscan.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2009. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -24,7 +24,7 @@ scan(Inport) -> scan(Inport, '', 1). scan(Inport, Prompt, Line1) -> - case catch io:scan_erl_form(Inport, Prompt, Line1) of + case catch io:scan_erl_form(Inport, Prompt, Line1, [unicode]) of {eof, Line2} -> {eof, Line2}; {ok, Tokens, Line2} -> @@ -34,6 +34,8 @@ scan(Inport, Prompt, Line1) -> _ -> {ok, lex(Tokens), Line2} end; + {error, Reason} -> + {error, Reason}; {error, Descriptor, Line2} -> {error, Descriptor, Line2}; {'EXIT', Why} -> diff --git a/lib/parsetools/test/leex_SUITE.erl b/lib/parsetools/test/leex_SUITE.erl index 1e50aedf07..a0d4fd7c48 100644 --- a/lib/parsetools/test/leex_SUITE.erl +++ b/lib/parsetools/test/leex_SUITE.erl @@ -1,7 +1,8 @@ +%% -*= coding: latin-1 -*- %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2010-2011. All Rights Reserved. +%% Copyright Ericsson AB 2010-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -42,7 +43,9 @@ -export([ file/1, compile/1, syntax/1, - pt/1, man/1, ex/1, ex2/1, not_yet/1]). + pt/1, man/1, ex/1, ex2/1, not_yet/1, + + otp_10302/1]). % Default timetrap timeout (set in init_per_testcase). -define(default_timeout, ?t:minutes(1)). @@ -63,7 +66,8 @@ all() -> groups() -> [{checks, [], [file, compile, syntax]}, - {examples, [], [pt, man, ex, ex2, not_yet]}]. + {examples, [], [pt, man, ex, ex2, not_yet]}, + {tickets, [], [otp_10302]}]. init_per_suite(Config) -> Config. @@ -875,6 +879,111 @@ not_yet(Config) when is_list(Config) -> ok. +otp_10302(doc) -> + "OTP-10302. Unicode characters scanner/parser."; +otp_10302(suite) -> []; +otp_10302(Config) when is_list(Config) -> + Dir = ?privdir, + Filename = filename:join(Dir, "file.xrl"), + Ret = [return, {report, true}], + + ok = file:write_file(Filename,<< + "%% coding: UTF-8\n" + "�" + >>), + {error,[{_,[{2,leex,cannot_parse}]}],[]} = + leex:file(Filename, Ret), + + ok = file:write_file(Filename,<< + "%% coding: UTF-8\n" + "Definitions.\n" + "�" + >>), + {error,[{_,[{3,leex,cannot_parse}]}],[]} = leex:file(Filename, Ret), + + ok = file:write_file(Filename,<< + "%% coding: UTF-8\n" + "Definitions.\n" + "A = a\n" + "L = [{A}-{Z}]\n" + "Z = z\n" + "Rules.\n" + "{L}+ : {token,{list_to_atom(TokenChars),H�pp}}.\n" + >>), + {error,[{_,[{7,leex,cannot_parse}]}],[]} = leex:file(Filename, Ret), + + ok = file:write_file(Filename,<< + "%% coding: UTF-8\n" + "Definitions.\n" + "A = a\n" + "L = [{A}-{Z}]\n" + "Z = z\n" + "Rules.\n" + "{L}+ : {token,{list_to_atom(TokenChars)}}.\n" + "Erlang code.\n" + "-export([t/0]).\n" + "t() ->\n" + " H�pp\n" + >>), + {error,[{_,[{11,leex,cannot_parse}]}],[]} = leex:file(Filename, Ret), + + Mini = <<"Definitions.\n" + "D = [0-9]\n" + "Rules.\n" + "{L}+ : {token,{word,TokenLine,TokenChars}}.\n" + "Erlang code.\n">>, + LeexPre = filename:join(Dir, "leexinc.hrl"), + ?line ok = file:write_file(LeexPre, <<"%% coding: UTF-8\n �">>), + PreErrors = run_test(Config, Mini, LeexPre), + {error,[{IncludeFile,[{2,leex,cannot_parse}]}],[]} = PreErrors, + "leexinc.hrl" = filename:basename(IncludeFile), + + Ts = [{uni_1, + <<"%% coding: UTF-8\n" + "Definitions.\n" + "A = a\n" + "L = [{A}-{Z}]\n" + "Z = z\n" + "Rules.\n" + "{L}+ : {token,{list_to_atom(TokenChars),\n" + "begin Häpp = foo, Häpp end," + " 'Häpp',\"\\x{400}B\",\"örn_Ѐ\"}}.\n" + "Erlang code.\n" + "-export([t/0]).\n" + "t() ->\n" + " %% Häpp, 'Häpp',\"\\x{400}B\",\"örn_Ѐ\"\n" + " {ok, [R], 1} = string(\"tip\"),\n" + " {tip,foo,'Häpp',[1024,66],[246,114,110,95,1024]} = R,\n" + " Häpp = foo,\n" + " {tip, Häpp, 'Häpp',\"\\x{400}B\",\"örn_Ѐ\"} = R,\n" + " ok.\n">>, + default, + ok}, + {uni_2, + <<"%% coding: Latin-1\n" + "Definitions.\n" + "A = a\n" + "L = [{A}-{Z}]\n" + "Z = z\n" + "Rules.\n" + "{L}+ : {token,{list_to_atom(TokenChars),\n" + "begin H�pp = foo, H�pp end," + " 'H�pp',\"\\x{400}B\",\"örn_Ѐ\"}}.\n" + "Erlang code.\n" + "-export([t/0]).\n" + "t() ->\n" + " %% H�pp, 'H�pp',\"\\x{400}B\",\"örn_Ѐ\"\n" + " {ok, [R], 1} = string(\"tip\"),\n" + " {tip,foo,'H�pp',[1024,66],[195,182,114,110,95,208,128]} = R,\n" + " H�pp = foo,\n" + " {tip, H�pp, 'H�pp',\"\\x{400}B\",\"örn_Ѐ\"} = R,\n" + " ok.\n">>, + default, + ok}], + run(Config, Ts), + + ok. + unwritable(Fname) -> {ok, Info} = file:read_file_info(Fname), Mode = Info#file_info.mode - 8#00200, diff --git a/lib/parsetools/test/yecc_SUITE.erl b/lib/parsetools/test/yecc_SUITE.erl index 3d26adf1be..c306dbe833 100644 --- a/lib/parsetools/test/yecc_SUITE.erl +++ b/lib/parsetools/test/yecc_SUITE.erl @@ -1,7 +1,8 @@ +%% -*- coding: latin-1 -*- %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2005-2011. All Rights Reserved. +%% Copyright Ericsson AB 2005-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -48,7 +49,7 @@ otp_5369/1, otp_6362/1, otp_7945/1, otp_8483/1, otp_8486/1, - otp_7292/1, otp_7969/1, otp_8919/1]). + otp_7292/1, otp_7969/1, otp_8919/1, otp_10302/1]). % Default timetrap timeout (set in init_per_testcase). -define(default_timeout, ?t:minutes(1)). @@ -75,7 +76,7 @@ groups() -> [empty, prec, yeccpre, lalr, old_yecc, other_examples]}, {bugs, [], [otp_5369, otp_6362, otp_7945, otp_8483, otp_8486]}, - {improvements, [], [otp_7292, otp_7969, otp_8919]}]. + {improvements, [], [otp_7292, otp_7969, otp_8919, otp_10302]}]. init_per_suite(Config) -> Config. @@ -1815,6 +1816,153 @@ otp_8919(Config) when is_list(Config) -> "syntax error before: \"hello\"" = lists:flatten(Mod:format_error(Mess)), ok. +otp_10302(doc) -> + "OTP-10302. Unicode characters scanner/parser."; +otp_10302(suite) -> []; +otp_10302(Config) when is_list(Config) -> + Dir = ?privdir, + Filename = filename:join(Dir, "OTP-10302.yrl"), + Ret = [return, {report, true}], + Mini1 = <<"%% coding: utf-8 + Nonterminals H�pp. + nt -> t.">>, + ok = file:write_file(Filename, Mini1), + %% This could (and should) be refined: + {error,[{Filename,[{2,Mod1,Err1}]}],[]} = + yecc:file(Filename, Ret), + "cannot translate from UTF-8" = Mod1:format_error(Err1), + + Mini2 = <<"%% coding: Utf-8 + Nonterminals Hopp. + Terminals t. + Rootsymbol Hopp. + + Hopp -> t. + + Erlang code. + + t() -> + H�pp.">>, + ok = file:write_file(Filename, Mini2), + {error,[{Filename,[{11,Mod2,Err2}]}],[]} = + yecc:file(Filename, Ret), + "cannot parse; possibly encoding mismatch" = Mod2:format_error(Err2), + + Mini3 = <<"%% coding: latin-1 + Nonterminals Hopp. + Terminals t. + Rootsymbol Hopp. + + Hopp -> t. + + Erlang code. + + t() -> + H�pp.">>, + ok = file:write_file(Filename, Mini3), + YeccPre = filename:join(Dir, "yeccpre.hrl"), + ok = file:write_file(YeccPre, [<<"%% coding: UTF-8\n �.\n">>]), + Inc = [{includefile,YeccPre}], + {error,[{_,[{2,yecc,cannot_parse}]}],[]} = + yecc:file(Filename, Inc ++ Ret), + + ok = file:write_file(Filename, + <<"%% coding: UTF-8 + Nonterminals Hopp. + Terminals t. + Rootsymbol \"örn_Ѐ\". + Hopp -> t : '$1'.">>), + {error,[{Filename,[{4,yecc,{bad_symbol,"�rn_"++[1024]}}]}],[]} = + yecc:file(Filename, Ret), + + ok = file:write_file(Filename, + <<"%% coding: UTF-8 + Nonterminals Hopp. + Terminals t. + Rootsymbol Hopp. + Endsymbol \"örn_Ѐ\". + Hopp -> t : '$1'.">>), + {error,[{Filename,[{5,yecc,{bad_symbol,"�rn_"++[1024]}}]}],[]} = + yecc:file(Filename, Ret), + + ok = file:write_file(Filename, + <<"%% coding: UTF-8 + Nonterminals Hopp. + Terminals t. + Rootsymbol Hopp. + Expect \"örn_Ѐ\". + Hopp -> t : '$1'.">>), + {error,[{Filename,[{5,yecc,{bad_symbol,"�rn_"++[1024]}}]}],[]} = + yecc:file(Filename, Ret), + + ok = file:write_file(Filename, + <<"%% coding: UTF-8 + Nonterminals Hopp. + Terminals t. + Rootsymbol Hopp. + States \"örn_Ѐ\". + Hopp -> t : '$1'.">>), + {error,[{Filename,[{5,yecc,{bad_symbol,"�rn_"++[1024]}}]}],[]} = + yecc:file(Filename, Ret), + + Ts = [{otp_10302_1,<<" + %% coding: UTF-8 + Header \"%% örn_Ѐ\" \"%% \\x{400}B\". + Nonterminals Häpp list. + Terminals element. + Rootsymbol Häpp. + + Häpp -> list : '$1'. + + list -> element : '$1'. + list -> list element : + begin + Häpp = foo, + {Häpp, 'Häpp',\"\\x{400}B\",\"örn_Ѐ\"} + end. + + Erlang code. + + -export([t/0]). + + t() -> + L = [{element, 1}, {element,2}], + {ok, R} = parse(L), + Häpp = foo, + {_,_,[1024,66],[246,114,110,95,1024]} = R, + {Häpp,'Häpp',\"\\x{400}B\",\"örn_Ѐ\"} = R, + ok. + ">>,default,ok}, + {otp_10302_2,<<" + %% coding: Latin-1 + Nonterminals H�pp list. + Terminals element. + Rootsymbol H�pp. + + H�pp -> list : '$1'. + + list -> element : '$1'. + list -> list element : + begin + H�pp = foo, + {H�pp, 'H�pp',\"\\x{400}B\",\"örn_Ѐ\"} + end. + + Erlang code. + + -export([t/0]). + + t() -> + L = [{element, 1}, {element,2}], + {ok, R} = parse(L), + H�pp = foo, + {_,_,[1024,66],[195,182,114,110,95,208,128]} = R, + {H�pp,'H�pp',\"\\x{400}B\",\"örn_Ѐ\"} = R, + ok. + ">>,default,ok}], + run(Config, Ts), + ok. + yeccpre_size() -> yeccpre_size(default_yeccpre()). diff --git a/lib/stdlib/doc/src/Makefile b/lib/stdlib/doc/src/Makefile index 50f6427eaa..6f1e61e70c 100644 --- a/lib/stdlib/doc/src/Makefile +++ b/lib/stdlib/doc/src/Makefile @@ -101,7 +101,6 @@ XML_REF6_FILES = stdlib_app.xml XML_PART_FILES = part.xml part_notes.xml part_notes_history.xml XML_CHAPTER_FILES = io_protocol.xml unicode_usage.xml notes.xml notes_history.xml -GIF_FILES = ushell1.gif ushell2.gif ushell3.gif BOOK_FILES = book.xml @@ -112,8 +111,7 @@ XML_FILES = \ # ---------------------------------------------------- HTML_FILES = $(XML_APPLICATION_FILES:%.xml=$(HTMLDIR)/%.html) \ - $(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html) \ - $(GIF_FILES:%.gif=$(HTMLDIR)/%.gif) + $(XML_PART_FILES:%.xml=$(HTMLDIR)/%.html) INFO_FILE = ../../info @@ -138,21 +136,16 @@ SPECS_FLAGS = -I../../include -I../../../kernel/include # ---------------------------------------------------- # Targets # ---------------------------------------------------- -$(HTMLDIR)/%.gif: %.gif - $(INSTALL_DATA) $< $@ - docs: man pdf html $(TOP_PDF_FILE): $(XML_FILES) pdf: $(TOP_PDF_FILE) -html: gifs $(HTML_REF_MAN_FILE) +html: $(HTML_REF_MAN_FILE) man: $(MAN3_FILES) $(MAN6_FILES) -gifs: $(GIF_FILES:%=$(HTMLDIR)/%) - debug opt: clean clean_docs: diff --git a/lib/stdlib/doc/src/epp.xml b/lib/stdlib/doc/src/epp.xml index 386ed89fe1..3e8aba2e5f 100644 --- a/lib/stdlib/doc/src/epp.xml +++ b/lib/stdlib/doc/src/epp.xml @@ -37,6 +37,18 @@ <p>The Erlang code preprocessor includes functions which are used by <c>compile</c> to preprocess macros and include files before the actual parsing takes place.</p> + <p>The Erlang source file <marker + id="encoding"><em>encoding</em></marker> is selected by a + comment in one of the first two lines of the source file. The + first string that matches the regular expression + <c>coding\s*[:=]\s*([-a-zA-Z0-9])+</c> selects the encoding. If + the matching string is not a valid encoding it is ignored. The + valid encodings are <c>Latin-1</c> and <c>UTF-8</c> where the + case of the characters can be chosen freely. Examples:</p> + <pre> +%% coding: utf-8 +%% For this file we have chosen encoding = Latin-1 +%% -*- coding: latin-1 -*-</pre> </description> <datatypes> <datatype> @@ -46,6 +58,9 @@ <name name="epp_handle"></name> <desc><p>Handle to the epp server.</p></desc> </datatype> + <datatype> + <name name="source_encoding"></name> + </datatype> </datatypes> <funcs> <func> @@ -83,6 +98,50 @@ </desc> </func> <func> + <name name="default_encoding" arity="0"/> + <fsummary>Return the default encoding of Erlang source files</fsummary> + <desc> + <p>Returns the default encoding of Erlang source files.</p> + </desc> + </func> + <func> + <name name="encoding_to_string" arity="1"/> + <fsummary>Return a string representation of an encoding</fsummary> + <desc> + <p>Returns a string representation of an encoding. The string + is recognized by <c>read_encoding/1,2</c> and + <c>set_encoding/1</c> as a valid encoding.</p> + </desc> + </func> + <func> + <name name="read_encoding" arity="1"/> + <name name="read_encoding" arity="2"/> + <fsummary>Read the encoding from a file</fsummary> + <desc> + <p>Read the <seealso marker="#encoding">encoding</seealso> from + a file. Returns the read encoding, or <c>none</c> if no + valid encoding was found.</p> + <p>The option <c>in_comment_only</c> is <c>true</c> by + default, which is correct for Erlang source files. If set to + <c>false</c> the encoding string does not necessarily have to + occur in a comment.</p> + </desc> + </func> + <func> + <name name="set_encoding" arity="1"/> + <fsummary>Read and set the encoding of an IO device</fsummary> + <desc> + <p>Reads the <seealso marker="#encoding">encoding</seealso> from + an IO device and sets the encoding of the device + accordingly. The position of the IO device referenced by + <c><anno>File</anno></c> is not affected. If no valid + encoding can be read from the IO device the encoding of the + IO device is set to the default encoding.</p> + <p>Returns the read encoding, or <c>none</c> if no valid + encoding was found.</p> + </desc> + </func> + <func> <name name="format_error" arity="1"/> <fsummary>Format an error descriptor</fsummary> <desc> diff --git a/lib/stdlib/doc/src/erl_pp.xml b/lib/stdlib/doc/src/erl_pp.xml index 57b5828bcd..9ae4f3d91f 100644 --- a/lib/stdlib/doc/src/erl_pp.xml +++ b/lib/stdlib/doc/src/erl_pp.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>1996</year> - <year>2011</year> + <year>2012</year> <holder>Ericsson AB, All Rights Reserved</holder> </copyright> <legalnotice> @@ -63,6 +63,12 @@ breaks and only a space is used as a separator.</p> </desc> </datatype> + <datatype> + <name name="option"/> + </datatype> + <datatype> + <name name="options"/> + </datatype> </datatypes> <funcs> <func> diff --git a/lib/stdlib/doc/src/io.xml b/lib/stdlib/doc/src/io.xml index e6d262466c..22cd45a482 100644 --- a/lib/stdlib/doc/src/io.xml +++ b/lib/stdlib/doc/src/io.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1996</year><year>2011</year> + <year>1996</year><year>2012</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -28,9 +28,9 @@ <rev></rev> </header> <module>io</module> - <modulesummary>Standard IO Server Interface Functions</modulesummary> + <modulesummary>Standard I/O Server Interface Functions</modulesummary> <description> - <p>This module provides an interface to standard Erlang IO servers. + <p>This module provides an interface to standard Erlang I/O servers. The output functions all return <c>ok</c> if they are successful, or exit if they are not.</p> <p>In the following description, all functions have an optional @@ -38,17 +38,16 @@ process which handles the IO protocols. Normally, it is the <c>IoDevice</c> returned by <seealso marker="kernel:file#open/2">file:open/2</seealso>.</p> - <p>For a description of the IO protocols refer to the STDLIB Users Guide.</p> + <p>For a description of the IO protocols refer to the <seealso marker="io_protocol">STDLIB User's Guide</seealso>.</p> <warning> <p>As of R13A, data supplied to the <seealso marker="#put_chars/2">put_chars</seealso> function should be in the <seealso marker="unicode#type-chardata"><c>unicode:chardata()</c></seealso> format. This means that programs supplying binaries to this function need to convert them to UTF-8 - before trying to output the data on an - <c>io_device()</c>.</p> + before trying to output the data on an IO device.</p> - <p>If an io_device() is set in binary mode, the functions <seealso + <p>If an IO device is set in binary mode, the functions <seealso marker="#get_chars/3">get_chars</seealso> and <seealso marker="#get_line/2">get_line</seealso> may return binaries instead of lists. The binaries will, as of R13A, be encoded in @@ -68,9 +67,9 @@ <datatype> <name name="device"/> <desc> - <p>Either <c>standard_io</c>, <c>standard_error</c>, a + <p>An IO device. Either <c>standard_io</c>, <c>standard_error</c>, a registered name, or a pid handling IO protocols (returned from - <seealso marker="kernel:file#open/2">file:open/2</seealso>).</p> + <seealso marker="kernel:file#open/2">file:open/2</seealso>).</p> </desc> </datatype> <datatype> @@ -89,17 +88,14 @@ <name name="format"/> </datatype> <datatype> - <name name="line"/> + <name name="location"/> </datatype> <datatype> <name name="prompt"/> </datatype> <datatype> - <name name="request_error"/> - </datatype> - <datatype> - <name name="error_description"/> - <desc><p>Whatever the I/O-server sends.</p></desc> + <name name="server_no_data"/> + <desc><p>What the I/O-server sends when there is no data.</p></desc> </datatype> </datatypes> @@ -107,11 +103,11 @@ <func> <name name="columns" arity="0"/> <name name="columns" arity="1"/> - <fsummary>Get the number of columns of a device</fsummary> + <fsummary>Get the number of columns of an IO device</fsummary> <desc> <p>Retrieves the number of columns of the <c><anno>IoDevice</anno></c> (i.e. the width of a terminal). The function - only succeeds for terminal devices, for all other devices + only succeeds for terminal devices, for all other IO devices the function returns <c>{error, enotsup}</c></p> </desc> </func> @@ -120,7 +116,7 @@ <name name="put_chars" arity="2"/> <fsummary>Write a list of characters</fsummary> <desc> - <p>Writes the characters of <c><anno>CharData</anno></c> to the io_server() + <p>Writes the characters of <c><anno>CharData</anno></c> to the I/O server (<c><anno>IoDevice</anno></c>).</p> </desc> </func> @@ -135,6 +131,7 @@ <func> <name name="get_chars" arity="2"/> <name name="get_chars" arity="3"/> + <type name="server_no_data"/> <fsummary>Read a specified number of characters</fsummary> <desc> <p>Reads <c><anno>Count</anno></c> characters from standard input @@ -143,19 +140,19 @@ <taglist> <tag><c><anno>Data</anno></c></tag> <item> - <p>The input characters. If the device supports Unicode, + <p>The input characters. If the IO device supports Unicode, the data may represent codepoints larger than 255 (the - latin1 range). If the io_server() is set to deliver + latin1 range). If the I/O server is set to deliver binaries, they will be encoded in UTF-8 (regardless of if - the device actually supports Unicode or not).</p> + the IO device actually supports Unicode or not).</p> </item> <tag><c>eof</c></tag> <item> <p>End of file was encountered.</p> </item> - <tag><c>{error,<anno>Reason</anno>}</c></tag> + <tag><c>{error, <anno>ErrorDescription</anno>}</c></tag> <item> - <p>Other (rare) error condition, for instance <c>{error,estale}</c> + <p>Other (rare) error condition, for instance <c>{error, estale}</c> if reading from an NFS file system.</p> </item> </taglist> @@ -164,6 +161,7 @@ <func> <name name="get_line" arity="1"/> <name name="get_line" arity="2"/> + <type name="server_no_data"/> <fsummary>Read a line</fsummary> <desc> <p>Reads a line from the standard input (<c><anno>IoDevice</anno></c>), @@ -172,19 +170,19 @@ <tag><c><anno>Data</anno></c></tag> <item> <p>The characters in the line terminated by a LF (or end of - file). If the device supports Unicode, + file). If the IO device supports Unicode, the data may represent codepoints larger than 255 (the - latin1 range). If the io_server() is set to deliver + latin1 range). If the I/O server is set to deliver binaries, they will be encoded in UTF-8 (regardless of if - the device actually supports Unicode or not).</p> + the IO device actually supports Unicode or not).</p> </item> <tag><c>eof</c></tag> <item> <p>End of file was encountered.</p> </item> - <tag><c>{error,<anno>Reason</anno>}</c></tag> + <tag><c>{error, <anno>ErrorDescription</anno>}</c></tag> <item> - <p>Other (rare) error condition, for instance <c>{error,estale}</c> + <p>Other (rare) error condition, for instance <c>{error, estale}</c> if reading from an NFS file system.</p> </item> </taglist> @@ -195,7 +193,7 @@ <name name="getopts" arity="1"/> <fsummary>Get the supported options and values from an I/O-server</fsummary> <desc> - <p>This function requests all available options and their current values for a specific io_device(). Example:</p> + <p>This function requests all available options and their current values for a specific IO device. Example:</p> <pre> 1> <input>{ok,F} = file:open("/dev/null",[read]).</input> {ok,<0.42.0>} @@ -217,30 +215,30 @@ <name name="setopts" arity="2"/> <fsummary>Set options</fsummary> <desc> - <p>Set options for the io_device() (<c><anno>IoDevice</anno></c>).</p> + <p>Set options for the standard IO device (<c><anno>IoDevice</anno></c>).</p> <p>Possible options and values vary depending on the actual - io_device(). For a list of supported options and their current values - on a specific device, use the <seealso + IO device. For a list of supported options and their current values + on a specific IO device, use the <seealso marker="#getopts/1">getopts/1</seealso> function.</p> - <p>The options and values supported by the current OTP io_devices are:</p> + <p>The options and values supported by the current OTP IO devices are:</p> <taglist> <tag><c>binary, list or {binary, boolean()}</c></tag> <item> - <p>If set in binary mode (binary or {binary,true}), the io_server() sends binary data (encoded in UTF-8) as answers to the get_line, get_chars and, if possible, get_until requests (see the I/O protocol description in STDLIB User's Guide for details). The immediate effect is that <c>get_chars/2,3</c> and <c>get_line/1,2</c> return UTF-8 binaries instead of lists of chars for the affected device.</p> - <p>By default, all io_devices in OTP are set in list mode, but the io functions can handle any of these modes and so should other, user written, modules behaving as clients to I/O-servers.</p> - <p>This option is supported by the standard shell (group.erl), the 'oldshell' (user.erl) and the file I/O servers.</p> + <p>If set in binary mode (<c>binary</c> or <c>{binary, true}</c>), the I/O server sends binary data (encoded in UTF-8) as answers to the <c>get_line</c>, <c>get_chars</c> and, if possible, <c>get_until</c> requests (see the I/O protocol description in <seealso marker="io_protocol">STDLIB User's Guide</seealso> for details). The immediate effect is that <c>get_chars/2,3</c> and <c>get_line/1,2</c> return UTF-8 binaries instead of lists of chars for the affected IO device.</p> + <p>By default, all IO devices in OTP are set in list mode, but the I/O functions can handle any of these modes and so should other, user written, modules behaving as clients to I/O-servers.</p> + <p>This option is supported by the standard shell (<c>group.erl</c>), the 'oldshell' (<c>user.erl</c>) and the file I/O servers.</p> </item> <tag><c>{echo, boolean()}</c></tag> <item> - <p>Denotes if the terminal should echo input. Only supported for the standard shell I/O-server (group.erl)</p> + <p>Denotes if the terminal should echo input. Only supported for the standard shell I/O-server (<c>group.erl</c>)</p> </item> <tag><c>{expand_fun, expand_fun()}</c></tag> <item> <p>Provide a function for tab-completion (expansion) - like the erlang shell. This function is called - when the user presses the Tab key. The expansion is + like the Erlang shell. This function is called + when the user presses the TAB key. The expansion is active when calling line-reading functions such as <c>get_line/1,2</c>.</p> <p>The function is called with the current line, upto @@ -253,25 +251,25 @@ will be printed and the current input line will be written once again.</p> <p>Trivial example (beep on anything except empty line, which - is expanded to "quit"):</p> + is expanded to <c>"quit"</c>):</p> <code type="none"> fun("") -> {yes, "quit", []}; (_) -> {no, "", ["quit"]} end</code> - <p>This option is supported by the standard shell only (group.erl).</p> + <p>This option is supported by the standard shell only (<c>group.erl</c>).</p> </item> <tag><c>{encoding, latin1 | unicode}</c></tag> <item> - <p>Specifies how characters are input or output from or to the actual device, implying that i.e. a terminal is set to handle Unicode input and output or a file is set to handle UTF-8 data encoding.</p> - <p>The option <em>does not</em> affect how data is returned from the io-functions or how it is sent in the I/O-protocol, it only affects how the io_device() is to handle Unicode characters towards the "physical" device.</p> - <p>The standard shell will be set for either unicode or latin1 encoding when the system is started. The actual encoding is set with the help of the "LANG" or "LC_CTYPE" environment variables on Unix-like system or by other means on other systems. The bottom line is that the user can input Unicode characters and the device will be in {encoding, unicode} mode if the device supports it. The mode can be changed, if the assumption of the runtime system is wrong, by setting this option.</p> - <p>The io_device() used when Erlang is started with the "-oldshell" or "-noshell" flags is by default set to latin1 encoding, meaning that any characters beyond codepoint 255 will be escaped and that input is expected to be plain 8-bit ISO-latin-1. If the encoding is changed to Unicode, input and output from the standard file descriptors will be in UTF-8 (regardless of operating system).</p> - <p>Files can also be set in {encoding, unicode}, meaning that data is written and read as UTF-8. More encodings are possible for files, see below.</p> - <p>{encoding, unicode | latin1} is supported by both the standard shell (group.erl including werl on windows), the 'oldshell' (user.erl) and the file I/O servers.</p> + <p>Specifies how characters are input or output from or to the actual IO device, implying that i.e. a terminal is set to handle Unicode input and output or a file is set to handle UTF-8 data encoding.</p> + <p>The option <em>does not</em> affect how data is returned from the I/O functions or how it is sent in the I/O-protocol, it only affects how the IO device is to handle Unicode characters towards the "physical" device.</p> + <p>The standard shell will be set for either Unicode or latin1 encoding when the system is started. The actual encoding is set with the help of the <c>LANG</c> or <c>LC_CTYPE</c> environment variables on Unix-like system or by other means on other systems. The bottom line is that the user can input Unicode characters and the IO device will be in <c>{encoding, unicode}</c> mode if the IO device supports it. The mode can be changed, if the assumption of the runtime system is wrong, by setting this option.</p> + <p>The IO device used when Erlang is started with the "-oldshell" or "-noshell" flags is by default set to latin1 encoding, meaning that any characters beyond codepoint 255 will be escaped and that input is expected to be plain 8-bit ISO-latin-1. If the encoding is changed to Unicode, input and output from the standard file descriptors will be in UTF-8 (regardless of operating system).</p> + <p>Files can also be set in <c>{encoding, unicode}</c>, meaning that data is written and read as UTF-8. More encodings are possible for files, see below.</p> + <p><c>{encoding, unicode | latin1}</c> is supported by both the standard shell (<c>group.erl</c> including <c>werl</c> on Windows®), the 'oldshell' (<c>user.erl</c>) and the file I/O servers.</p> </item> <tag><c>{encoding, utf8 | utf16 | utf32 | {utf16,big} | {utf16,little} | {utf32,big} | {utf32,little}}</c></tag> <item> <p>For disk files, the encoding can be set to various UTF variants. This will have the effect that data is expected to be read as the specified encoding from the file and the data will be written in the specified encoding to the disk file.</p> - <p>{encoding, utf8} will have the same effect as {encoding,unicode} on files.</p> + <p><c>{encoding, utf8}</c> will have the same effect as <c>{encoding, unicode}</c> on files.</p> <p>The extended encodings are only supported on disk files (opened by the <seealso marker="kernel:file#open/2">file:open/2</seealso> function)</p> </item> </taglist> @@ -289,6 +287,7 @@ <func> <name name="read" arity="1"/> <name name="read" arity="2"/> + <type name="server_no_data"/> <fsummary>Read a term</fsummary> <desc> <p>Reads a term <c><anno>Term</anno></c> from the standard input @@ -312,21 +311,25 @@ </func> <func> <name name="read" arity="3"/> + <name name="read" arity="4"/> + <type name="server_no_data"/> <fsummary>Read a term</fsummary> <desc> <p>Reads a term <c><anno>Term</anno></c> from <c><anno>IoDevice</anno></c>, prompting it - with <c><anno>Prompt</anno></c>. Reading starts at line number - <c><anno>StartLine</anno></c>. It returns:</p> + with <c><anno>Prompt</anno></c>. Reading starts at location + <c><anno>StartLocation</anno></c>. The argument + <c><anno>Options</anno></c> is passed on as the <c>Options</c> + argument of the <c>erl_scan:tokens/4</c> function. It returns:</p> <taglist> - <tag><c>{ok, Term, <anno>EndLine</anno>}</c></tag> + <tag><c>{ok, Term, <anno>EndLocation</anno>}</c></tag> <item> <p>The parsing was successful.</p> </item> - <tag><c>{eof, <anno>EndLine</anno>}</c></tag> + <tag><c>{eof, <anno>EndLocation</anno>}</c></tag> <item> <p>End of file was encountered.</p> </item> - <tag><c>{error, <anno>ErrorInfo</anno>, <anno>ErrorLine</anno>}</c></tag> + <tag><c>{error, <anno>ErrorInfo</anno>, <anno>ErrorLocation</anno>}</c></tag> <item> <p>The parsing failed.</p> </item> @@ -377,7 +380,7 @@ ok</pre> applicable, it is used for both the field width and precision. The default padding character is <c>' '</c> (space).</p> <p><c>Mod</c> is the control sequence modifier. It is either a - single character (currently only 't', for unicode translation, + single character (currently only <c>t</c>, for Unicode translation, is supported) that changes the interpretation of Data.</p> <p>The following control sequences are available:</p> @@ -397,9 +400,9 @@ ok</pre> 2> <input>io:fwrite("|~10.5c|~-10.5c|~5c|~n", [$a, $b, $c]).</input> | aaaaa|bbbbb |ccccc| ok</pre> - <p>If the Unicode translation modifier ('t') is in effect, + <p>If the Unicode translation modifier (<c>t</c>) is in effect, the integer argument can be any number representing a - valid unicode codepoint, otherwise it should be an integer + valid Unicode codepoint, otherwise it should be an integer less than or equal to 255, otherwise it is masked with 16#FF:</p> <pre> 1> <input>io:fwrite("~tc~n",[1024]).</input> @@ -439,7 +442,7 @@ ok</pre> <item> <p>Prints the argument with the <c>string</c> syntax. The argument is, if no Unicode translation modifier is present, an - iolist(), a binary, or an atom. If the Unicode translation modifier ('t') is in effect, the argument is unicode:chardata(), meaning that binaries are in UTF-8. The characters + iolist(), a binary, or an atom. If the Unicode translation modifier (<c>t</c>) is in effect, the argument is unicode:chardata(), meaning that binaries are in UTF-8. The characters are printed without quotes. The string is first truncated by the given precision and then padded and justified to the given field width. The default precision is the field width.</p> @@ -476,8 +479,10 @@ ok <p>Writes the data with standard syntax in the same way as <c>~w</c>, but breaks terms whose printed representation is longer than one line into many lines and indents each - line sensibly. It also tries to detect lists of printable - characters and to output these as strings. For example:</p> + line sensibly. It also tries to detect lists of + printable characters and to output these as strings. The + Unicode translation modifier is used for determining + what characters are printable. For example:</p> <pre> 5> <input>T = [{attributes,[[{id,age,1.50000},{mode,explicit},</input> <input>{typename,"INTEGER"}], [{id,cho},{mode,explicit},{typename,'Cho'}]]},</input> @@ -516,6 +521,19 @@ Here T = [{attributes,[[{id,age,1.5}, {tag,{'PRIVATE',3}}, {mode,implicit}] ok</pre> + <p>Binaries that look like UTF-8 encoded strings will be + output with the string syntax if the Unicode translation + modifier is given:</p> + <pre> +9> <input>io:fwrite("~p~n",[[1024]]).</input> +[1024] +10> <input>io:fwrite("~tp~n",[[1024]]).</input> +"\x{400}" +11> <input>io:fwrite("~tp~n", [<<128,128>>]).</input> +<<128,128>> +12> <input>io:fwrite("~tp~n", [<<208,128>>]).</input> +<<"\x{400}"/utf8>> +ok</pre> </item> <tag><c>W</c></tag> <item> @@ -583,7 +601,7 @@ ok</pre> <tag><c>#</c></tag> <item> <p>Like <c>B</c>, but prints the number with an Erlang style - '#'-separated base prefix.</p> + <c>#</c>-separated base prefix.</p> <pre> 16> <input>io:fwrite("~.10#~n", [31]).</input> 10#31 @@ -633,13 +651,14 @@ ok {shell,eval_loop,3}]} in function io:o_request/2</pre> <p>In this example, an attempt was made to output the single - character '65' with the aid of the string formatting directive + character 65 with the aid of the string formatting directive "~s".</p> </desc> </func> <func> <name name="fread" arity="2"/> <name name="fread" arity="3"/> + <type name="server_no_data"/> <fsummary>Read formatted input</fsummary> <desc> <p>Reads characters from the standard input (<c><anno>IoDevice</anno></c>), @@ -664,7 +683,7 @@ ok return suppression character. It provides a method to specify a field which is to be omitted. <c>F</c> is the <c>field width</c> of the input field, <c>M</c> is an optional - translation modifier (of which 't' is the only currently + translation modifier (of which <c>t</c> is the only currently supported, meaning Unicode translation) and <c>C</c> determines the type of control sequence.</p> @@ -690,8 +709,8 @@ ok <tag><c>-</c></tag> <item> <p>An optional sign character is expected. A sign - character '-' gives the return value <c>-1</c>. Sign - character '+' or none gives <c>1</c>. The field width + character <c>-</c> gives the return value <c>-1</c>. Sign + character <c>+</c> or none gives <c>1</c>. The field width parameter is ignored. Leading white-space characters are not skipped.</p> </item> @@ -713,7 +732,7 @@ ok characters are stripped. An Erlang string (list of characters) is returned.</p> - <p>If Unicode translation is in effect (~ts), + <p>If Unicode translation is in effect (<c>~ts</c>), characters larger than 255 are accepted, otherwise not. With the translation modifier, the list returned may as a consequence also contain @@ -769,10 +788,15 @@ Prompt> <input><Character beyond latin1 range not printable in this medium> <item> <p>End of file was encountered.</p> </item> - <tag><c>{error, <anno>What</anno>}</c></tag> + <tag><c>{error, <anno>FreadError</anno>}</c></tag> + <item> + <p>The reading failed and <c>FreadError</c> gives a + hint about the error.</p> + </item> + <tag><c>{error, <anno>ErrorDescription</anno>}</c></tag> <item> <p>The read operation failed and the parameter - <c><anno>What</anno></c> gives a hint about the error.</p> + <c><anno>ErrorDescription</anno></c> gives a hint about the error.</p> </item> </taglist> </item> @@ -793,11 +817,11 @@ enter><input>:</input> <input>alan</input> <input>:</input> <input>joe</in <func> <name name="rows" arity="0"/> <name name="rows" arity="1"/> - <fsummary>Get the number of rows of a device</fsummary> + <fsummary>Get the number of rows of an IO device</fsummary> <desc> <p>Retrieves the number of rows of the <c><anno>IoDevice</anno></c> (i.e. the height of a terminal). The function - only succeeds for terminal devices, for all other devices + only succeeds for terminal devices, for all other IO devices the function returns <c>{error, enotsup}</c></p> </desc> </func> @@ -805,23 +829,28 @@ enter><input>:</input> <input>alan</input> <input>:</input> <input>joe</in <name name="scan_erl_exprs" arity="1"/> <name name="scan_erl_exprs" arity="2"/> <name name="scan_erl_exprs" arity="3"/> + <name name="scan_erl_exprs" arity="4"/> + <type name="server_no_data"/> <fsummary>Read and tokenize Erlang expressions</fsummary> <desc> <p>Reads data from the standard input (<c>IoDevice</c>), - prompting it with <c>Prompt</c>. Reading starts at line number - <c>StartLine</c> (1). The data is tokenized as if it were a - sequence of Erlang expressions until a final <c>'.'</c> is + prompting it with <c>Prompt</c>. Reading starts at location + <c>StartLocation</c> (<c>1</c>). The argument <c><anno>Options</anno></c> + is passed on as the <c>Options</c> argument of the + <c>erl_scan:tokens/4</c> function. The data is tokenized as if + it were a + sequence of Erlang expressions until a final dot (<c>.</c>) is reached. This token is also returned. It returns:</p> <taglist> - <tag><c>{ok, Tokens, EndLine}</c></tag> + <tag><c>{ok, Tokens, EndLocation}</c></tag> <item> <p>The tokenization succeeded.</p> </item> - <tag><c>{eof, EndLine}</c></tag> + <tag><c>{eof, EndLocation}</c></tag> <item> <p>End of file was encountered.</p> </item> - <tag><c>{error, ErrorInfo, ErrorLine}</c></tag> + <tag><c>{error, ErrorInfo, ErrorLocation}</c></tag> <item> <p>An error occurred.</p> </item> @@ -840,13 +869,18 @@ enter><input>1.0er.</input> <name name="scan_erl_form" arity="1"/> <name name="scan_erl_form" arity="2"/> <name name="scan_erl_form" arity="3"/> + <name name="scan_erl_form" arity="4"/> + <type name="server_no_data"/> <fsummary>Read and tokenize an Erlang form</fsummary> <desc> <p>Reads data from the standard input (<c><anno>IoDevice</anno></c>), - prompting it with <c><anno>Prompt</anno></c>. Starts reading at line number - <c><anno>StartLine</anno></c> (1). The data is tokenized as if it were an + prompting it with <c><anno>Prompt</anno></c>. Starts reading + at location <c><anno>StartLocation</anno></c> (<c>1</c>). The + argument <c><anno>Options</anno></c> is passed on as the + <c>Options</c> argument of the <c>erl_scan:tokens/4</c> + function. The data is tokenized as if it were an Erlang form - one of the valid Erlang expressions in an - Erlang source file - until a final <c>'.'</c> is reached. + Erlang source file - until a final dot (<c>.</c>) is reached. This last token is also returned. The return values are the same as for <c>scan_erl_exprs/1,2,3</c> above.</p> </desc> @@ -855,24 +889,30 @@ enter><input>1.0er.</input> <name name="parse_erl_exprs" arity="1"/> <name name="parse_erl_exprs" arity="2"/> <name name="parse_erl_exprs" arity="3"/> + <name name="parse_erl_exprs" arity="4"/> <type name="parse_ret"/> + <type name="server_no_data"/> <fsummary>Read, tokenize and parse Erlang expressions</fsummary> <desc> - <p>Reads data from the standard input (<c><anno>IoDevice</anno></c>), - prompting it with <c><anno>Prompt</anno></c>. Starts reading at line number - <c><anno>StartLine</anno></c> (1). The data is tokenized and parsed as if - it were a sequence of Erlang expressions until a final '.' is - reached. It returns:</p> + <p>Reads data from the standard input + (<c><anno>IoDevice</anno></c>), prompting it with + <c><anno>Prompt</anno></c>. Starts reading at location + <c><anno>StartLocation</anno></c> (<c>1</c>). The argument + <c><anno>Options</anno></c> is passed on as the + <c>Options</c> argument of the <c>erl_scan:tokens/4</c> + function. The data is tokenized and parsed as if it were a + sequence of Erlang expressions until a final dot (<c>.</c>) is reached. + It returns:</p> <taglist> - <tag><c>{ok, ExprList, EndLine}</c></tag> + <tag><c>{ok, ExprList, EndLocation}</c></tag> <item> <p>The parsing was successful.</p> </item> - <tag><c>{eof, EndLine}</c></tag> + <tag><c>{eof, EndLocation}</c></tag> <item> <p>End of file was encountered.</p> </item> - <tag><c>{error, ErrorInfo, ErrorLine}</c></tag> + <tag><c>{error, ErrorInfo, ErrorLocation}</c></tag> <item> <p>An error occurred.</p> </item> @@ -891,25 +931,30 @@ enter><input>abc("hey".</input> <name name="parse_erl_form" arity="1"/> <name name="parse_erl_form" arity="2"/> <name name="parse_erl_form" arity="3"/> + <name name="parse_erl_form" arity="4"/> <type name="parse_form_ret"/> + <type name="server_no_data"/> <fsummary>Read, tokenize and parse an Erlang form</fsummary> <desc> <p>Reads data from the standard input (<c><anno>IoDevice</anno></c>), - prompting it with <c><anno>Prompt</anno></c>. Starts reading at line number - <c><anno>StartLine</anno></c> (1). The data is tokenized and parsed as if + prompting it with <c><anno>Prompt</anno></c>. Starts reading at + location <c><anno>StartLocation</anno></c> (<c>1</c>). The argument + <c><anno>Options</anno></c> is passed on as the + <c>Options</c> argument of the <c>erl_scan:tokens/4</c> + function. The data is tokenized and parsed as if it were an Erlang form - one of the valid Erlang expressions - in an Erlang source file - until a final '.' is reached. It + in an Erlang source file - until a final dot (<c>.</c>) is reached. It returns:</p> <taglist> - <tag><c>{ok, AbsForm, EndLine}</c></tag> + <tag><c>{ok, AbsForm, EndLocation}</c></tag> <item> <p>The parsing was successful.</p> </item> - <tag><c>{eof, EndLine}</c></tag> + <tag><c>{eof, EndLocation}</c></tag> <item> <p>End of file was encountered.</p> </item> - <tag><c>{error, ErrorInfo, ErrorLine}</c></tag> + <tag><c>{error, ErrorInfo, ErrorLocation}</c></tag> <item> <p>An error occurred.</p> </item> @@ -940,7 +985,7 @@ enter><input>bar.</input> </section> <section> <title>Standard Error</title> - <p>In certain situations, especially when the standard output is redirected, access to an io_server() specific for error messages might be convenient. The io_device 'standard_error' can be used to direct output to whatever the current operating system considers a suitable device for error output. Example on a Unix-like operating system:</p> + <p>In certain situations, especially when the standard output is redirected, access to an I/O-server specific for error messages might be convenient. The IO device <c>standard_error</c> can be used to direct output to whatever the current operating system considers a suitable IO device for error output. Example on a Unix-like operating system:</p> <pre> $ <input>erl -noshell -noinput -eval 'io:format(standard_error,"Error: ~s~n",["error 11"]),'\</input> <input>'init:stop().' > /dev/null</input> @@ -956,7 +1001,7 @@ Error: error 11</pre> <c>ErrorInfo</c> structure which is returned from all IO modules. It has the format:</p> <code type="none"> -{ErrorLine, Module, ErrorDescriptor}</code> +{ErrorLocation, Module, ErrorDescriptor}</code> <p>A string which describes the error is obtained with the following call:</p> <code type="none"> diff --git a/lib/stdlib/doc/src/io_lib.xml b/lib/stdlib/doc/src/io_lib.xml index 506c1792f1..617a6b74fc 100644 --- a/lib/stdlib/doc/src/io_lib.xml +++ b/lib/stdlib/doc/src/io_lib.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1996</year><year>2011</year> + <year>1996</year><year>2012</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -43,6 +43,12 @@ <name name="chars"/> </datatype> <datatype> + <name name="unicode_chars"/> + </datatype> + <datatype> + <name name="unicode_string"/> + </datatype> + <datatype> <name name="continuation"/> <desc><p>A continuation as returned by <seealso marker="#fread/3"><c>fread/3</c></seealso>.</p> </desc> @@ -50,6 +56,9 @@ <datatype> <name name="depth"/> </datatype> + <datatype> + <name name="fread_error"/> + </datatype> </datatypes> <funcs> <func> @@ -209,6 +218,23 @@ </desc> </func> <func> + <name name="write_unicode_string" arity="1"/> + <fsummary>Write a Unicode string</fsummary> + <desc> + <p>Returns the list of characters needed to print + <c><anno>UnicodeString</anno></c> as a string.</p> + </desc> + </func> + <func> + <name name="write_unicode_string_as_latin1" arity="1"/> + <fsummary>Write a Unicode string</fsummary> + <desc> + <p>Returns the list of characters needed to print + <c><anno>UnicodeString</anno></c> as a string. Non-Latin-1 + characters are escaped.</p> + </desc> + </func> + <func> <name name="write_char" arity="1"/> <fsummary>Write a character</fsummary> <desc> @@ -217,6 +243,23 @@ </desc> </func> <func> + <name name="write_unicode_char" arity="1"/> + <fsummary>Write a Unicode character</fsummary> + <desc> + <p>Returns the list of characters needed to print a character + constant in the Unicode character set.</p> + </desc> + </func> + <func> + <name name="write_unicode_char_as_latin1" arity="1"/> + <fsummary>Write a Unicode character</fsummary> + <desc> + <p>Returns the list of characters needed to print a character + constant in the Unicode character set. Non-Latin-1 characters + are escaped.</p> + </desc> + </func> + <func> <name name="indentation" arity="2"/> <fsummary>Indentation after printing string</fsummary> <desc> @@ -233,6 +276,14 @@ </desc> </func> <func> + <name name="unicode_char_list" arity="1"/> + <fsummary>Test for a list of Unicode characters</fsummary> + <desc> + <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of + characters in the Unicode range, otherwise it returns <c>false</c>.</p> + </desc> + </func> + <func> <name name="deep_char_list" arity="1"/> <fsummary>Test for a deep list of characters</fsummary> <desc> @@ -241,6 +292,14 @@ </desc> </func> <func> + <name name="deep_unicode_char_list" arity="1"/> + <fsummary>Test for a deep list of Unicode characters</fsummary> + <desc> + <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a, possibly deep, list + of characters in the Unicode range, otherwise it returns <c>false</c>.</p> + </desc> + </func> + <func> <name name="printable_list" arity="1"/> <fsummary>Test for a list of printable ISO-latin-1 characters</fsummary> <desc> @@ -248,6 +307,14 @@ printable ISO-latin-1 characters, otherwise it returns <c>false</c>.</p> </desc> </func> + <func> + <name name="printable_unicode_list" arity="1"/> + <fsummary>Test for a list of printable Unicode characters</fsummary> + <desc> + <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of + printable Unicode characters, otherwise it returns <c>false</c>.</p> + </desc> + </func> </funcs> </erlref> diff --git a/lib/stdlib/doc/src/io_protocol.xml b/lib/stdlib/doc/src/io_protocol.xml index 0ff3d5c1ee..d36bf2042f 100644 --- a/lib/stdlib/doc/src/io_protocol.xml +++ b/lib/stdlib/doc/src/io_protocol.xml @@ -5,7 +5,7 @@ <header> <copyright> <year>1999</year> - <year>2011</year> + <year>2012</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -35,10 +35,10 @@ <p>The I/O-protocol in Erlang specifies a way for a client to communicate -with an io_server and vice versa. The io_server is a process handling the -requests and that performs the requested task on i.e. a device. The +with an I/O server and vice versa. The I/O server is a process that handles +the requests and performs the requested task on e.g. an IO device. The client is any Erlang process wishing to read or write data from/to the -device.</p> +IO device.</p> <p>The common I/O-protocol has been present in OTP since the beginning, but has been fairly undocumented and has also somewhat @@ -53,85 +53,85 @@ implement than the original. It can certainly be argumented that the current protocol is too complex, but this text describes how it looks today, not how it should have looked.</p> -<p>The basic ideas from the original protocol still hold. The io_server +<p>The basic ideas from the original protocol still hold. The I/O server and client communicate with one single, rather simplistic protocol and -no server state is ever present in the client. Any io_server can be +no server state is ever present in the client. Any I/O server can be used together with any client code and client code need not be aware -of the actual device the io_server communicates with.</p> +of the actual IO device the I/O server communicates with.</p> <section> -<title>Protocol basics</title> +<title>Protocol Basics</title> -<p>As described in Robert's paper, servers and clients communicate using -io_request/io_reply tuples as follows:</p> +<p>As described in Robert's paper, I/O servers and clients communicate using +<c>io_request</c>/<c>io_reply</c> tuples as follows:</p> <p><em>{io_request, From, ReplyAs, Request}</em><br/> <em>{io_reply, ReplyAs, Reply}</em></p> -<p>The client sends an io_request to the io_server and the server -eventually sends a corresponding reply.</p> +<p>The client sends an <c>io_request</c> tuple to the I/O server and +the server eventually sends a corresponding <c>io_reply</c> tuple.</p> <list type="bulleted"> -<item>From is the pid() of the client, the process which the io_server -sends the reply to.</item> - -<item>ReplyAs can be any datum and is simply returned in the corresponding -io_reply. The io-module in the Erlang standard library simply uses the pid() -of the io_server as the ReplyAs datum, but a more complicated client -could have several outstanding io-requests to the same server and -would then use i.e. a reference() or something else to differentiate among -the incoming io_reply's. The ReplyAs element should be considered -opaque by the io_server. Note that the pid() of the server is not -explicitly present in the io_reply. The reply can be sent from any -process, not necessarily the actual io_server. The ReplyAs element is -the only thing that connects one io_request with an io_reply.</item> - -<item>Request and Reply are described below.</item> +<item><c>From</c> is the <c>pid()</c> of the client, the process which +the I/O server sends the IO reply to.</item> + +<item><c>ReplyAs</c> can be any datum and is returned in the corresponding +<c>io_reply</c>. The <seealso marker="stdlib:io">io</seealso> module simply uses the pid() +of the I/O server as the <c>ReplyAs</c> datum, but a more complicated client +could have several outstanding I/O requests to the same I/O server and +would then use i.e. a <c>reference()</c> or something else to differentiate among +the incoming IO replies. The <c>ReplyAs</c> element should be considered +opaque by the I/O server. Note that the <c>pid()</c> of the I/O server is not +explicitly present in the <c>io_reply</c> tuple. The reply can be sent from any +process, not necessarily the actual I/O server. The <c>ReplyAs</c> element is +the only thing that connects one I/O request with an I/O-reply.</item> + +<item><c>Request</c> and <c>Reply</c> are described below.</item> </list> -<p>When an io_server receives an io_request, it acts upon the actual -Request part and eventually sends an io_reply with the corresponding -Reply part.</p> +<p>When an I/O server receives an <c>io_request</c> tuple, it acts upon the actual +<c>Request</c> part and eventually sends an <c>io_reply</c> tuple with the corresponding +<c>Reply</c> part.</p> </section> <section> -<title>Output requests</title> +<title>Output Requests</title> -<p>To output characters on a device, the following Requests exist:</p> +<p>To output characters on an IO device, the following <c>Request</c>s exist:</p> <p> <em>{put_chars, Encoding, Characters}</em><br/> <em>{put_chars, Encoding, Module, Function, Args}</em> </p> <list type="bulleted"> -<item>Encoding is either 'unicode' or 'latin1', meaning that the +<item><c>Encoding</c> is either <c>unicode</c> or <c>latin1</c>, meaning that the characters are (in case of binaries) encoded as either UTF-8 or - iso-latin-1 (pure bytes). A well behaved io_server should also - return error if list elements contain integers > 255 when the - Encoding is set to latin1. Note that this does not in any way tell - how characters should be put on the actual device or how the - io_server should handle them. Different io_servers may handle the - characters however they want, this simply tells the io_server which - format the data is expected to have. In the Module/Function/argument - case, the Encoding tells which format the designated function - produces. Note that byte-oriented data is simplest sent using latin1 - Encoding</item> - -<item>Characters are the data to be put on the device. If Encoding is - latin1, this is an iolist(). If Encoding is unicode, this is an - Erlang standard mixed unicode list (one integer in a list per + ISO-latin-1 (pure bytes). A well behaved I/O server should also + return error if list elements contain integers > 255 when + <c>Encoding</c> is set to <c>latin1</c>. Note that this does not in any way tell + how characters should be put on the actual IO device or how the + I/O server should handle them. Different I/O servers may handle the + characters however they want, this simply tells the I/O server which + format the data is expected to have. In the <c>Module</c>/<c>Function</c>/<c>Args</c> + case, <c>Encoding</c> tells which format the designated function + produces. Note that byte-oriented data is simplest sent using the ISO-latin-1 + encoding.</item> + +<item>Characters are the data to be put on the IO device. If <c>Encoding</c> is + <c>latin1</c>, this is an <c>iolist()</c>. If <c>Encoding</c> is <c>unicode</c>, this is an + Erlang standard mixed Unicode list (one integer in a list per character, characters in binaries represented as UTF-8).</item> -<item>Module, Function, Args denotes a function which will be called to - produce the data (like io_lib:format). Args is a list of arguments +<item><c>Module</c>, <c>Function</c>, and <c>Args</c> denote a function which will be called to + produce the data (like <c>io_lib:format/2</c>). <c>Args</c> is a list of arguments to the function. The function should produce data in the given - Encoding. The io_server should call the function as apply(Mod, Func, - Args) and will put the returned data on the device as if it was sent - in a {put_chars, Encoding, Characters} request. If the function + <c>Encoding</c>. The I/O server should call the function as + <c>apply(Mod, Func, Args)</c> and will put the returned data on the IO device as if it was sent + in a <c>{put_chars, Encoding, Characters}</c> request. If the function returns anything else than a binary or list or throws an exception, an error should be sent back to the client.</item> </list> -<p>The server replies to the client with an io_reply where the Reply +<p>The I/O server replies to the client with an <c>io_reply</c> tuple where the <c>Reply</c> element is one of:</p> <p> <em>ok</em><br/> @@ -139,49 +139,50 @@ element is one of:</p> </p> <list type="bulleted"> -<item>Error describes the error to the client, which may do whatever it - wants with it. The Erlang io-module typically returns it as is.</item> +<item><c>Error</c> describes the error to the client, which may do whatever + it wants with it. The Erlang <seealso marker="stdlib:io">io</seealso> + module typically returns it as is.</item> </list> -<p>For backward compatibility the following Requests should also be -handled by an io_server (these messages should not be present after +<p>For backward compatibility the following <c>Request</c>s should also be +handled by an I/O server (these requests should not be present after R15B of OTP):</p> <p> <em>{put_chars, Characters}</em><br/> <em>{put_chars, Module, Function, Args}</em> </p> -<p>These should behave as {put_chars, latin1, Characters} and {put_chars, -latin1, Module, Function, Args} respectively. </p> +<p>These should behave as <c>{put_chars, latin1, Characters}</c> and +<c>{put_chars, latin1, Module, Function, Args}</c> respectively. </p> </section> <section> <title>Input Requests</title> -<p>To read characters from a device, the following Requests exist:</p> +<p>To read characters from an IO device, the following <c>Request</c>s exist:</p> <p><em>{get_until, Encoding, Prompt, Module, Function, ExtraArgs}</em></p> <list type="bulleted"> -<item>Encoding denotes how data is to be sent back to the client and +<item><c>Encoding</c> denotes how data is to be sent back to the client and what data is sent to the function denoted by - Module/Function/ExtraArgs. If the function supplied returns data as a + <c>Module</c>/<c>Function</c>/<c>ExtraArgs</c>. If the function supplied returns data as a list, the data is converted to this encoding. If however the function supplied returns data in some other format, no conversion - can be done and it's up to the client supplied function to return - data in a proper way. If Encoding is latin1, lists of integers + can be done and it is up to the client supplied function to return + data in a proper way. If <c>Encoding</c> is <c>latin1</c>, lists of integers 0..255 or binaries containing plain bytes are sent back to the - client when possible, if Encoding is unicode, lists with integers in - the whole unicode range or binaries encoded in UTF-8 are sent to the + client when possible; if <c>Encoding</c> is <c>unicode</c>, lists with integers in + the whole Unicode range or binaries encoded in UTF-8 are sent to the client. The user supplied function will always see lists of integers, never - binaries, but the list may contain numbers > 255 if the Encoding is - 'unicode'.</item> + binaries, but the list may contain numbers > 255 if the <c>Encoding</c> is + <c>unicode</c>.</item> -<item>Prompt is a list of characters (not mixed, no binaries) or an atom() - to be output as a prompt for input on the device. The Prompt is - often ignored by the io_server and a Prompt set to '' should always - be ignored (and result in nothing being written to the device).</item> +<item><c>Prompt</c> is a list of characters (not mixed, no binaries) or an atom + to be output as a prompt for input on the IO device. <c>Prompt</c> is + often ignored by the I/O server and if set to <c>''</c> it should always + be ignored (and result in nothing being written to the IO device).</item> -<item><p>Module, Function, ExtraArgs denotes a function and arguments to +<item><p><c>Module</c>, <c>Function</c>, and <c>ExtraArgs</c> denote a function and arguments to determine when enough data is written. The function should take two additional arguments, the last state, and a list of characters. The function should return one of:</p> @@ -189,23 +190,23 @@ latin1, Module, Function, Args} respectively. </p> <em>{done, Result, RestChars}</em><br/> <em>{more, Continuation}</em> </p> - <p>The Result can be any Erlang term, but if it is a list(), the - io_server may convert it to a binary() of appropriate format before - returning it to the client, if the server is set in binary mode (see + <p>The <c>Result</c> can be any Erlang term, but if it is a <c>list()</c>, the + I/O server may convert it to a <c>binary()</c> of appropriate format before + returning it to the client, if the I/O server is set in binary mode (see below).</p> - <p>The function will be called with the data the io_server finds on - its device, returning {done, Result, RestChars} when enough data is - read (in which case Result is sent to the client and RestChars are - kept in the io_server as a buffer for subsequent input) or {more, - Continuation}, indicating that more characters are needed to - complete the request. The Continuation will be sent as the state in + <p>The function will be called with the data the I/O server finds on + its IO device, returning <c>{done, Result, RestChars}</c> when enough data is + read (in which case <c>Result</c> is sent to the client and <c>RestChars</c> is + kept in the I/O server as a buffer for subsequent input) or + <c>{more, Continuation}</c>, indicating that more characters are needed to + complete the request. The <c>Continuation</c> will be sent as the state in subsequent calls to the function when more characters are available. When no more characters are available, the function - shall return {done,eof,Rest}. + shall return <c>{done, eof, Rest}</c>. The initial state is the empty list and the data when an - end of file is reached on the device is the atom 'eof'. An emulation - of the get_line request could be (inefficiently) implemented using + end of file is reached on the IO device is the atom <c>eof</c>. An emulation + of the <c>get_line</c> request could be (inefficiently) implemented using the following functions:</p> <code> -module(demo). @@ -214,7 +215,9 @@ latin1, Module, Function, Args} respectively. </p> until_newline(_ThisFar,eof,_MyStopCharacter) -> {done,eof,[]}; until_newline(ThisFar,CharList,MyStopCharacter) -> - case lists:splitwith(fun(X) -> X =/= MyStopCharacter end, CharList) of + case + lists:splitwith(fun(X) -> X =/= MyStopCharacter end, CharList) + of {L,[]} -> {more,ThisFar++L}; {L2,[MyStopCharacter|Rest]} -> @@ -222,45 +225,47 @@ until_newline(ThisFar,CharList,MyStopCharacter) -> end. get_line(IoServer) -> - IoServer ! {io_request, self(), IoServer, {get_until, unicode, '', - ?MODULE, until_newline, [$\n]}}, + IoServer ! {io_request, + self(), + IoServer, + {get_until, unicode, '', ?MODULE, until_newline, [$\n]}}, receive {io_reply, IoServer, Data} -> Data end. </code> - <p>Note especially that the last element in the Request tuple ([$\n]) + <p>Note especially that the last element in the <c>Request</c> tuple (<c>[$\n]</c>) is appended to the argument list when the function is called. The function should be called like - apply(Module, Function, [ State, Data | ExtraArgs ]) by the io_server</p> + <c>apply(Module, Function, [ State, Data | ExtraArgs ])</c> by the I/O server</p> </item> </list> -<p>A defined number of characters is requested using this Request:</p> +<p>A fixed number of characters is requested using this <c>Request</c>:</p> <p> <em>{get_chars, Encoding, Prompt, N}</em> </p> <list type="bulleted"> -<item>Encoding and Prompt as for get_until.</item> +<item><c>Encoding</c> and <c>Prompt</c> as for <c>get_until</c>.</item> -<item>N is the number of characters to be read from the device.</item> +<item><c>N</c> is the number of characters to be read from the IO device.</item> </list> -<p>A single line (like in the example above) is requested with this Request:</p> +<p>A single line (like in the example above) is requested with this <c>Request</c>:</p> <p> <em>{get_line, Encoding, Prompt}</em> </p> <list type="bulleted"> -<item>Encoding and prompt as above.</item> +<item><c>Encoding</c> and <c>Prompt</c> as above.</item> </list> -<p>Obviously, get_chars and get_line could be implemented with the -get_until request (and indeed was originally), but demands for +<p>Obviously, the <c>get_chars</c> and <c>get_line</c> could be implemented with the +<c>get_until</c> request (and indeed they were originally), but demands for efficiency has made these additions necessary.</p> -<p>The server replies to the client with an io_reply where the Reply +<p>The I/O server replies to the client with an <c>io_reply</c> tuple where the <c>Reply</c> element is one of:</p> <p> <em>Data</em><br/> @@ -269,16 +274,17 @@ element is one of:</p> </p> <list type="bulleted"> -<item>Data is the characters read, in either list or binary form - (depending on the io_server mode, see below).</item> -<item>Error describes the error to the client, which may do whatever it - wants with it. The Erlang io-module typically returns it as is.</item> -<item>eof is returned when input end is reached and no more data is +<item><c>Data</c> is the characters read, in either list or binary form + (depending on the I/O server mode, see below).</item> +<item><c>Error</c> describes the error to the client, which may do whatever it + wants with it. The Erlang <seealso marker="stdlib:io">io</seealso> + module typically returns it as is.</item> +<item><c>eof</c> is returned when input end is reached and no more data is available to the client process.</item> </list> -<p>For backward compatibility the following Requests should also be -handled by an io_server (these messages should not be present after +<p>For backward compatibility the following <c>Request</c>s should also be +handled by an I/O server (these reqeusts should not be present after R15B of OTP):</p> <p> @@ -287,30 +293,30 @@ R15B of OTP):</p> <em>{get_line, Prompt}</em><br/> </p> -<p>These should behave as {get_until, latin1, Prompt, Module, Function, -ExtraArgs}, {get_chars, latin1, Prompt, N} and {get_line, latin1, -Prompt} respectively.</p> +<p>These should behave as <c>{get_until, latin1, Prompt, Module, Function, +ExtraArgs}</c>, <c>{get_chars, latin1, Prompt, N}</c> and <c>{get_line, latin1, +Prompt}</c> respectively.</p> </section> <section> -<title>I/O-server modes</title> - -<p>Demands for efficiency when reading data from an io_server has not -only lead to the addition of the get_line and get_chars requests, but -has also added the concept of io_server options. No options are -mandatory to implement, but all io_servers in the Erlang standard -libraries honor the 'binary' option, which allows the Data in the -io_reply to be binary instead of in list form <em>when possible</em>. +<title>I/O-server Modes</title> + +<p>Demands for efficiency when reading data from an I/O server has not +only lead to the addition of the <c>get_line</c> and <c>get_chars</c> requests, but +has also added the concept of I/O server options. No options are +mandatory to implement, but all I/O servers in the Erlang standard +libraries honor the <c>binary</c> option, which allows the <c>Data</c> element of the +<c>io_reply</c> tuple to be a binary instead of a list <em>when possible</em>. If the data is sent as a binary, Unicode data will be sent in the -standard Erlang unicode -format, i.e. UTF-8 (note that the function in get_until still gets -list data regardless of the io_server mode).</p> +standard Erlang Unicode +format, i.e. UTF-8 (note that the function of the <c>get_until</c> request still gets +list data regardless of the I/O server mode).</p> -<p>Note that i.e. the <c>get_until</c> request allows for a function with the data specified as always being a list. Also the return value data from such a function can be of any type (as is indeed the case when an io:fread request is sent to an io_server). The client has to be prepared for data received as answers to those requests to be in a variety of forms, but the server should convert the results to binaries whenever possible (i.e. when the function supplied to get_until actually returns a list). The example shown later in this text does just that.</p> +<p>Note that i.e. the <c>get_until</c> request allows for a function with the data specified as always being a list. Also the return value data from such a function can be of any type (as is indeed the case when an <c>io:fread</c> request is sent to an I/O server). The client has to be prepared for data received as answers to those requests to be in a variety of forms, but the I/O server should convert the results to binaries whenever possible (i.e. when the function supplied to <c>get_until</c> actually returns a list). The example shown later in this text does just that.</p> <p>An I/O-server in binary mode will affect the data sent to the client, so that it has to be able to handle binary data. For convenience, it -is possible to set and retrieve the modes of an io_server using the -following I/O-requests:</p> +is possible to set and retrieve the modes of an I/O server using the +following I/O requests:</p> <p> <em>{setopts, Opts}</em> @@ -318,72 +324,72 @@ following I/O-requests:</p> <list type="bulleted"> -<item>Opts is a list of options in the format recognized by proplists (and - of course by the io_server itself).</item> +<item><c>Opts</c> is a list of options in the format recognized by <seealso marker="stdlib:proplists">proplists</seealso> (and + of course by the I/O server itself).</item> </list> -<p>As an example, the io_server for the interactive shell (in group.erl) +<p>As an example, the I/O server for the interactive shell (in <c>group.erl</c>) understands the following options:</p> <p> -<em>{binary, bool()} (or 'binary'/'list')</em><br/> -<em>{echo, bool()}</em><br/> +<em>{binary, boolean()}</em> (or <em>binary</em>/<em>list</em>)<br/> +<em>{echo, boolean()}</em><br/> <em>{expand_fun, fun()}</em><br/> -<em>{encoding, 'unicode'/'latin1'} (or 'unicode'/'latin1')</em> +<em>{encoding, unicode/latin1}</em> (or <em>unicode</em>/<em>latin1</em>) </p> -<p>- of which the 'binary' and 'encoding' options are common for all -io_servers in OTP, while 'echo' and 'expand' is valid only for this -io_server. It's worth noting that the 'unicode' option notifies how -characters are actually put on the physical device, i.e. if the -terminal per se is unicode aware, it does not affect how characters +<p>- of which the <c>binary</c> and <c>encoding</c> options are common for all +I/O servers in OTP, while <c>echo</c> and <c>expand</c> are valid only for this +I/O server. It is worth noting that the <c>unicode</c> option notifies how +characters are actually put on the physical IO device, i.e. if the +terminal per se is Unicode aware, it does not affect how characters are sent in the I/O-protocol, where each request contains encoding information for the provided or returned data.</p> -<p>The server should send one of the following as Reply:</p> +<p>The I/O server should send one of the following as <c>Reply</c>:</p> <p> <em>ok</em><br/> <em>{error, Error}</em> </p> -<p>An error (preferably enotsup) is to be expected if the option is -not supported by the io_server (like if an 'echo' option is sent in a -setopt Request to a plain file).</p> +<p>An error (preferably <c>enotsup</c>) is to be expected if the option is +not supported by the I/O server (like if an <c>echo</c> option is sent in a +<c>setopts</c> request to a plain file).</p> -<p>To retrieve options, this message is used:</p> +<p>To retrieve options, this request is used:</p> <p> <em>getopts</em> </p> -<p>The 'getopts' message requests a complete list of all options -supported by the io_server as well as their current values.</p> +<p>The <c>getopts</c> request asks for a complete list of all options +supported by the I/O server as well as their current values.</p> -<p>The server replies:</p> +<p>The I/O server replies:</p> <p> <em>OptList</em><br/> -<em>{error,Error}</em> +<em>{error, Error}</em> </p> <list type="bulleted"> -<item>OptList is a list of tuples {Option, Value} where Option is always +<item><c>OptList</c> is a list of tuples <c>{Option, Value}</c> where <c>Option</c> is always an atom.</item> </list> </section> <section> -<title>Multiple I/O requests</title> +<title>Multiple I/O Requests</title> -<p>The Request element can in itself contain several Requests by using +<p>The <c>Request</c> element can in itself contain several <c>Request</c>s by using the following format:</p> <p> <em>{requests, Requests}</em> </p> <list type="bulleted"> -<item>Requests is a list of valid Request tuples for the protocol, they +<item><c>Requests</c> is a list of valid <c>io_request</c> tuples for the protocol, they shall be executed in the order in which they appear in the list and the execution should continue until one of the requests result in an error or the list is consumed. The result of the last request is sent back to the client.</item> </list> -<p>The server can for a list of requests send any of the valid results in +<p>The I/O server can for a list of requests send any of the valid results in the reply:</p> <p> @@ -395,7 +401,7 @@ the reply:</p> <p>- depending on the actual requests in the list.</p> </section> <section> -<title>Optional I/O-requests</title> +<title>Optional I/O Requests</title> <p>The following I/O request is optional to implement and a client should be prepared for an error return:</p> @@ -403,47 +409,47 @@ should be prepared for an error return:</p> <em>{get_geometry, Geometry}</em> </p> <list type="bulleted"> -<item>Geometry is either the atom 'rows' or the atom 'columns'.</item> +<item><c>Geometry</c> is either the atom <c>rows</c> or the atom <c>columns</c>.</item> </list> -<p>The server should send the Reply as:</p> +<p>The I/O server should send the <c>Reply</c> as:</p> <p> <em>{ok, N}</em><br/> <em>{error, Error}</em> </p> <list type="bulleted"> -<item>N is the number of character rows or columns the device has, if - applicable to the device the io_server handles, otherwise {error, - enotsup} is a good answer.</item> +<item><c>N</c> is the number of character rows or columns the IO device has, if + applicable to the IO device the I/O server handles, otherwise <c>{error, + enotsup}</c> is a good answer.</item> </list> </section> <section> -<title>Unimplemented request types:</title> +<title>Unimplemented Request Types</title> -<p>If an io_server encounters a request it does not recognize (i.e. the -io_request tuple is in the expected format, but the actual Request is -unknown), the server should send a valid reply with the error tuple:</p> +<p>If an I/O server encounters a request it does not recognize (i.e. the +<c>io_request</c> tuple is in the expected format, but the actual <c>Request</c> is +unknown), the I/O server should send a valid reply with the error tuple:</p> <p> <em>{error, request}</em> </p> -<p>This makes it possible to extend the protocol with optional messages +<p>This makes it possible to extend the protocol with optional requests and for the clients to be somewhat backwards compatible.</p> </section> <section> -<title>An annotated and working example io_server:</title> +<title>An Annotated and Working Example I/O Server</title> -<p>An io_server is any process capable of handling the protocol. There is -no generic io_server behavior, but could well be. The framework is +<p>An I/O server is any process capable of handling the I/O protocol. There is +no generic I/O server behavior, but could well be. The framework is simple enough, a process handling incoming requests, usually both -io_requests and other device-specific requests (for i.e. positioning , +I/O-requests and other IO device-specific requests (for i.e. positioning, closing etc.).</p> -<p>Our example io_server stores characters in an ets table, making up a +<p>Our example I/O server stores characters in an ETS table, making up a fairly crude ram-file (it is probably not useful, but working).</p> <p>The module begins with the usual directives, a function to start the -server and a main loop handling the requests:</p> +I/O server and a main loop handling the requests:</p> <code> -module(ets_io_server). @@ -486,18 +492,19 @@ loop(State) -> </code> <p>The main loop receives messages from the client (which might be using -the io-module to send requests). For each request the function -request/2 is called and a reply is eventually sent using the reply/3 +the <seealso marker="stdlib:io">io</seealso> module to send requests). +For each request the function +<c>request/2</c> is called and a reply is eventually sent using the <c>reply/3</c> function.</p> -<p>The "private" message {From, rewind} results in the +<p>The "private" message <c>{From, rewind}</c> results in the current position in the pseudo-file to be reset to 0 (the beginning of -the "file"). This is a typical example of device-specific +the "file"). This is a typical example of IO device-specific messages not being part of the I/O-protocol. It is usually a bad idea -to embed such private messages in io_request tuples, as that might be +to embed such private messages in <c>io_request</c> tuples, as that might be confusing to the reader.</p> -<p>Let's look at the reply function first...</p> +<p>Let us look at the reply function first...</p> <code> @@ -506,8 +513,8 @@ reply(From, ReplyAs, Reply) -> </code> -<p>Simple enough, it sends the io_reply tuple back to the client, -providing the ReplyAs element received in the request along with the +<p>Simple enough, it sends the <c>io_reply</c> tuple back to the client, +providing the <c>ReplyAs</c> element received in the request along with the result of the request, as described above.</p> <p>Now look at the different requests we need to handle. First the @@ -525,18 +532,18 @@ request({put_chars, Encoding, Module, Function, Args}, State) -> end; </code> -<p>The Encoding tells us how the characters in the message are +<p>The <c>Encoding</c> tells us how the characters in the request are represented. We want to store the characters as lists in the -ets-table, so we convert them to lists using the -unicode:characters_to_list/2 function. The conversion function -conveniently accepts the encoding types unicode or latin1, so we can -use the Encoding parameter directly.</p> +ETS table, so we convert them to lists using the +<seealso marker="stdlib:unicode#characters_to_list/2"><c>unicode:characters_to_list/2</c></seealso> function. The conversion function +conveniently accepts the encoding types <c>unicode</c> or <c>latin1</c>, so we can +use <c>Encoding</c> directly.</p> -<p>When Module, Function and Arguments are provided, we simply apply it +<p>When <c>Module</c>, <c>Function</c> and <c>Arguments</c> are provided, we simply apply it and do the same thing with the result as if the data was provided directly.</p> -<p>Let's handle the requests for retrieving data too:</p> +<p>Let us handle the requests for retrieving data too:</p> <code> request({get_until, Encoding, _Prompt, M, F, As}, State) -> @@ -550,11 +557,11 @@ request({get_line, Encoding, _Prompt}, State) -> </code> <p>Here we have cheated a little by more or less only implementing -get_until and using internal helpers to implement get_chars and -get_line. In production code, this might be to inefficient, but that +<c>get_until</c> and using internal helpers to implement <c>get_chars</c> and +<c>get_line</c>. In production code, this might be too inefficient, but that of course depends on the frequency of the different requests. Before -we start actually implementing the functions put_chars/2 and -get_until/5, lets look into the few remaining requests:</p> +we start actually implementing the functions <c>put_chars/2</c> and +<c>get_until/5</c>, let us look into the few remaining requests:</p> <code> request({get_geometry,_}, State) -> @@ -567,18 +574,18 @@ request({requests, Reqs}, State) -> multi_request(Reqs, {ok, ok, State}); </code> -<p>The get_geometry request has no meaning for this io_server, so the -reply will be {error, enotsup}. The only option we handle is the -binary/list option, which is done in separate functions.</p> +<p>The <c>get_geometry</c> request has no meaning for this I/O server, so the +reply will be <c>{error, enotsup}</c>. The only option we handle is the +<c>binary</c>/<c>list</c> option, which is done in separate functions.</p> -<p>The multi-request tag (requests) is handled in a separate loop +<p>The multi-request tag (<c>requests</c>) is handled in a separate loop function applying the requests in the list one after another, returning the last result.</p> -<p>What's left is to handle backward compatibility and the file-module +<p>What is left is to handle backward compatibility and the <seealso marker="kernel:file">file</seealso> module (which uses the old requests until backward compatibility with pre-R13 -nodes is no longer needed). Note that the io_server will not work with -a simple file:write if these are not added:</p> +nodes is no longer needed). Note that the I/O server will not work with +a simple <c>file:write/2</c> if these are not added:</p> <code> request({put_chars,Chars}, State) -> @@ -593,7 +600,7 @@ request({get_until, Prompt,M,F,As}, State) -> request({get_until,latin1,Prompt,M,F,As}, State); </code> -<p>Ok, what's left now is to return {error, request} if the request is +<p>OK, what is left now is to return <c>{error, request}</c> if the request is not recognized:</p> <code> @@ -601,7 +608,7 @@ request(_Other, State) -> {error, {error, request}, State}. </code> -<p>Let's move further and actually handle the different requests, first +<p>Let us move further and actually handle the different requests, first the fairly generic multi-request type:</p> <code> @@ -615,10 +622,10 @@ multi_request([], Result) -> <p>We loop through the requests one at the time, stopping when we either encounter an error or the list is exhausted. The last return value is -sent back to the client (it's first returned to the main loop and then -sent back by the function io_reply).</p> +sent back to the client (it is first returned to the main loop and then +sent back by the function <c>io_reply</c>).</p> -<p>The getopt and setopt requests are also simple to handle, we just +<p>The <c>getopts</c> and <c>setopts</c> requests are also simple to handle, we just change or read our state record:</p> <code> @@ -656,24 +663,24 @@ getopts(#state{mode=M} = S) -> end}],S}. </code> -<p>As a convention, all io_servers handle both {setopts, [binary]}, -{setopts, [list]} and {setopts,[{binary, bool()}]}, hence the trick -with proplists:substitute_negations/2 and proplists:unfold/1. If -invalid options are sent to us, we send {error,enotsup} back to the +<p>As a convention, all I/O servers handle both <c>{setopts, [binary]}</c>, +<c>{setopts, [list]}</c> and <c>{setopts,[{binary, boolean()}]}</c>, hence the trick +with <c>proplists:substitute_negations/2</c> and <c>proplists:unfold/1</c>. If +invalid options are sent to us, we send <c>{error, enotsup}</c> back to the client.</p> -<p>The getopts request should return a list of {Option, Value} tuples, +<p>The <c>getopts</c> request should return a list of <c>{Option, Value}</c> tuples, which has the twofold function of providing both the current values -and the available options of this io_server. We have only one option, +and the available options of this I/O server. We have only one option, and hence return that.</p> -<p>So far our io_server has been fairly generic (except for the rewind -request handled in the main loop and the creation of an ets table). -Most io_servers contain code similar to what's above.</p> +<p>So far our I/O server has been fairly generic (except for the <c>rewind</c> +request handled in the main loop and the creation of an ETS table). +Most I/O servers contain code similar to the one above.</p> <p>To make the example runnable, we now start implementing the actual -reading and writing of the data to/from the ets-table. First the -put_chars function:</p> +reading and writing of the data to/from the ETS table. First the +<c>put_chars/3</c> function:</p> <code> put_chars(Chars, #state{table = T, position = P} = State) -> @@ -686,10 +693,10 @@ put_chars(Chars, #state{table = T, position = P} = State) -> <p>We already have the data as (Unicode) lists and therefore just split the list in runs of a predefined size and put each run in the table at the current position (and forward). The functions -split_data/3 and apply_update/2 are implemented below.</p> +<c>split_data/3</c> and <c>apply_update/2</c> are implemented below.</p> -<p>Now we want to read data from the table. The get_until function reads -data and applies the function until it says it's done. The result is +<p>Now we want to read data from the table. The <c>get_until/5</c> function reads +data and applies the function until it says it is done. The result is sent back to the client:</p> <code> @@ -700,11 +707,12 @@ get_until(Encoding, Mod, Func, As, if M =:= binary -> {ok, - unicode:characters_to_binary(Data,unicode,Encoding), + unicode:characters_to_binary(Data, unicode, Encoding), State#state{position = NewP}}; true -> case check(Encoding, - unicode:characters_to_list(Data, unicode)) of + unicode:characters_to_list(Data, unicode)) + of {error, _} = E -> {error, E, State}; List -> @@ -730,24 +738,24 @@ get_loop(M,F,A,T,P,C) -> end. </code> -<p>Here we also handle the mode (binary or list) that can be set by -the setopts request. By default, all OTP io_servers send data back to -the client as lists, but switching mode to binary might increase -efficiency if the server handles it in an appropriate way. The -implementation of get_until is hard to get efficient as the supplied -function is defined to take lists as arguments, but get_chars and -get_line can be optimized for binary mode. This example does not +<p>Here we also handle the mode (<c>binary</c> or <c>list</c>) that can be set by +the <c>setopts</c> request. By default, all OTP I/O servers send data back to +the client as lists, but switching mode to <c>binary</c> might increase +efficiency if the I/O server handles it in an appropriate way. The +implementation of <c>get_until</c> is hard to get efficient as the supplied +function is defined to take lists as arguments, but <c>get_chars</c> and +<c>get_line</c> can be optimized for binary mode. This example does not optimize anything however. It is important though that the returned data is of the right type depending on the options set, so we convert the lists to binaries in the correct encoding <em>if possible</em> -before returning. The function supplied in the get_until request may, +before returning. The function supplied in the <c>get_until</c> request tuple may, as its final result return anything, so only functions actually returning lists can get them converted to binaries. If the request -contained the encoding tag unicode, the lists can contain all unicode +contained the encoding tag <c>unicode</c>, the lists can contain all Unicode codepoints and the binaries should be in UTF-8, if the encoding tag -was latin1, the client should only get characters in the range -0..255. The function check/2 takes care of not returning arbitrary -unicode codepoints in lists if the encoding was given as latin1. If +was <c>latin1</c>, the client should only get characters in the range +0..255. The function <c>check/2</c> takes care of not returning arbitrary +Unicode codepoints in lists if the encoding was given as <c>latin1</c>. If the function did not return a list, the check cannot be performed and the result will be that of the supplied function untouched.</p> @@ -768,13 +776,13 @@ check(latin1, List) -> end. </code> -<p>The function check takes care of providing an error tuple if unicode +<p>The function check takes care of providing an error tuple if Unicode codepoints above 255 is to be returned if the client requested latin1.</p> -<p>The two functions until_newline/3 and until_enough/3 are helpers used -together with the get_until function to implement get_chars and -get_line (inefficiently):</p> +<p>The two functions <c>until_newline/3</c> and <c>until_enough/3</c> are helpers used +together with the <c>get_until/5</c> function to implement <c>get_chars</c> and +<c>get_line</c> (inefficiently):</p> <code> until_newline([],eof,_MyStopCharacter) -> @@ -782,7 +790,9 @@ until_newline([],eof,_MyStopCharacter) -> until_newline(ThisFar,eof,_MyStopCharacter) -> {done,ThisFar,[]}; until_newline(ThisFar,CharList,MyStopCharacter) -> - case lists:splitwith(fun(X) -> X =/= MyStopCharacter end, CharList) of + case + lists:splitwith(fun(X) -> X =/= MyStopCharacter end, CharList) + of {L,[]} -> {more,ThisFar++L}; {L2,[MyStopCharacter|Rest]} -> @@ -802,10 +812,10 @@ until_enough(ThisFar,CharList,_N) -> </code> <p>As can be seen, the functions above are just the type of functions -that should be provided in get_until requests.</p> +that should be provided in <c>get_until</c> requests.</p> <p>Now we only need to read and write the table in an appropriate way to -complete the server:</p> +complete the I/O server:</p> <code> get(P,Tab) -> @@ -847,13 +857,13 @@ apply_update(Table, {Row, Col, List}) -> end. </code> -<p>The table is read or written in chunks of ?CHARS_PER_REC, overwriting +<p>The table is read or written in chunks of <c>?CHARS_PER_REC</c>, overwriting when necessary. The implementation is obviously not efficient, it is just working.</p> <p>This concludes the example. It is fully runnable and you can read or -write to the io_server by using i.e. the io_module or even the file -module. It's as simple as that to implement a fully fledged io_server +write to the I/O server by using i.e. the <seealso marker="stdlib:io">io</seealso> module or even the <seealso marker="kernel:file">file</seealso> +module. It is as simple as that to implement a fully fledged I/O server in Erlang.</p> </section> </chapter> diff --git a/lib/stdlib/doc/src/re.xml b/lib/stdlib/doc/src/re.xml index 2211bfb925..71a6e34513 100644 --- a/lib/stdlib/doc/src/re.xml +++ b/lib/stdlib/doc/src/re.xml @@ -96,12 +96,12 @@ subjects during the program's lifetime. Compiling once and executing many times is far more efficient than compiling each time one wants to match.</p> - <p>When the unicode option is given, the regular expression should be given as a valid unicode <c>charlist()</c>, otherwise as any valid <c>iodata()</c>.</p> + <p>When the unicode option is given, the regular expression should be given as a valid Unicode <c>charlist()</c>, otherwise as any valid <c>iodata()</c>.</p> <p><marker id="compile_options"/>The options have the following meanings:</p> <taglist> <tag><c>unicode</c></tag> - <item>The regular expression is given as a unicode <c>charlist()</c> and the resulting regular expression code is to be run against a valid unicode <c>charlist()</c> subject.</item> + <item>The regular expression is given as a Unicode <c>charlist()</c> and the resulting regular expression code is to be run against a valid Unicode <c>charlist()</c> subject.</item> <tag><c>anchored</c></tag> <item>The pattern is forced to be "anchored", that is, it is constrained to match only at the first matching point in the string that is being searched (the "subject string"). This effect can also be achieved by appropriate constructs in the pattern itself.</item> <tag><c>caseless</c></tag> @@ -478,7 +478,7 @@ This option makes it possible to include comments inside complicated patterns. N <p>Replaces the matched part of the <c><anno>Subject</anno></c> string with the contents of <c><anno>Replacement</anno></c>.</p> <p>The permissible options are the same as for <c>re:run/3</c>, except that the <c>capture</c> option is not allowed. Instead a <c>{return, <anno>ReturnType</anno>}</c> is present. The default return type is <c>iodata</c>, constructed in a - way to minimize copying. The <c>iodata</c> result can be used directly in many i/o-operations. If a flat <c>list()</c> is + way to minimize copying. The <c>iodata</c> result can be used directly in many I/O-operations. If a flat <c>list()</c> is desired, specify <c>{return, list}</c> and if a binary is preferred, specify <c>{return, binary}</c>.</p> <p>As in the <c>re:run/3</c> function, an <c>mp()</c> compiled diff --git a/lib/stdlib/doc/src/unicode.xml b/lib/stdlib/doc/src/unicode.xml index 1f6cbaccd7..d235f3e180 100644 --- a/lib/stdlib/doc/src/unicode.xml +++ b/lib/stdlib/doc/src/unicode.xml @@ -32,9 +32,9 @@ <module>unicode</module> <modulesummary>Functions for converting Unicode characters</modulesummary> <description> - <p>This module contains functions for converting between different character representations. Basically it converts between iso-latin-1 characters and Unicode ditto, but it can also convert between different Unicode encodings (like UTF-8, UTF-16 and UTF-32).</p> + <p>This module contains functions for converting between different character representations. Basically it converts between ISO-latin-1 characters and Unicode ditto, but it can also convert between different Unicode encodings (like UTF-8, UTF-16 and UTF-32).</p> <p>The default Unicode encoding in Erlang is in binaries UTF-8, which is also the format in which built in functions and libraries in OTP expect to find binary Unicode data. In lists, Unicode data is encoded as integers, each integer representing one character and encoded simply as the Unicode codepoint for the character.</p> - <p>Other Unicode encodings than integers representing codepoints or UTF-8 in binaries are referred to as "external encodings". The iso-latin-1 encoding is in binaries and lists referred to as latin1-encoding.</p> + <p>Other Unicode encodings than integers representing codepoints or UTF-8 in binaries are referred to as "external encodings". The ISO-latin-1 encoding is in binaries and lists referred to as latin1-encoding.</p> <p>It is recommended to only use external encodings for communication with external entities where this is required. When working inside the Erlang/OTP environment, it is recommended to keep binaries in UTF-8 when representing Unicode characters. Latin1 encoding is supported both for backward compatibility and for communication with external entities not supporting Unicode character sets.</p> </description> @@ -48,13 +48,13 @@ <datatype> <name name="unicode_binary"/> <desc> - <p>A binary() with characters encoded in the UTF-8 coding standard.</p> + <p>A <c>binary()</c> with characters encoded in the UTF-8 coding standard.</p> </desc> </datatype> <datatype> <name name="unicode_char"/> <desc> - <p>An integer() representing a valid unicode codepoint.</p> + <p>An <c>integer()</c> representing a valid Unicode codepoint.</p> </desc> </datatype> <datatype> @@ -63,7 +63,7 @@ <datatype> <name name="charlist"/> <desc> - <p>A unicode_binary is allowed as the tail of the list.</p> + <p>A <c>unicode_binary()</c> is allowed as the tail of the list.</p> </desc> </datatype> <datatype> @@ -85,7 +85,7 @@ </datatype> <datatype> <name name="latin1_binary"/> - <desc><p>A <c>binary()</c> with characters coded in iso-latin-1.</p> + <desc><p>A <c>binary()</c> with characters coded in ISO-latin-1.</p> </desc> </datatype> <datatype> @@ -110,7 +110,9 @@ <name name="bom_to_encoding" arity="1"/> <fsummary>Identify UTF byte order marks in a binary.</fsummary> <type name="endian"/> - <type_desc variable="Bin">A binary() of byte_size 4 or more.</type_desc> + <type_desc variable="Bin"> + A <c>binary()</c> such that <c>byte_size(<anno>Bin</anno>) >= 4</c>. + </type_desc> <desc> <p>Check for a UTF byte order mark (BOM) in the beginning of a @@ -126,7 +128,7 @@ <name name="characters_to_list" arity="1"/> <fsummary>Convert a collection of characters to list of Unicode characters</fsummary> <desc> - <p>Same as characters_to_list(<anno>Data</anno>,unicode).</p> + <p>Same as <c>characters_to_list(<anno>Data</anno>, unicode)</c>.</p> </desc> </func> <func> @@ -134,8 +136,8 @@ <fsummary>Convert a collection of characters to list of Unicode characters</fsummary> <desc> - <p>This function converts a possibly deep list of integers and - binaries into a list of integers representing unicode + <p>Converts a possibly deep list of integers and + binaries into a list of integers representing Unicode characters. The binaries in the input may have characters encoded as latin1 (0 - 255, one character per byte), in which case the <c><anno>InEncoding</anno></c> parameter should be given as @@ -148,18 +150,18 @@ <p>If <c><anno>InEncoding</anno></c> is <c>latin1</c>, the <c><anno>Data</anno></c> parameter corresponds to the <c>iodata()</c> type, but for <c>unicode</c>, the <c><anno>Data</anno></c> parameter can contain integers greater than 255 - (unicode characters beyond the iso-latin-1 range), which would + (Unicode characters beyond the ISO-latin-1 range), which would make it invalid as <c>iodata()</c>.</p> <p>The purpose of the function is mainly to be able to convert - combinations of unicode characters into a pure unicode + combinations of Unicode characters into a pure Unicode string in list representation for further processing. For writing the data to an external entity, the reverse function <seealso - marker="#characters_to_binary/3">characters_to_binary/3</seealso> + marker="#characters_to_binary/3"><c>characters_to_binary/3</c></seealso> comes in handy.</p> - <p>The option <c>unicode</c> is an alias for <c>utf8</c>, as this is the + <p>The option <c>unicode</c> is an alias for <c>utf8</c>, as this is the preferred encoding for Unicode characters in binaries. <c>utf16</c> is an alias for <c>{utf16,big}</c> and <c>utf32</c> is an alias for <c>{utf32,big}</c>. The <c>big</c> @@ -167,7 +169,7 @@ encoding.</p> <p>If for some reason, the data cannot be converted, either - because of illegal unicode/latin1 characters in the list, or + because of illegal Unicode/latin1 characters in the list, or because of invalid UTF encoding in any binaries, an error tuple is returned. The error tuple contains the tag <c>error</c>, a list representing the characters that could be @@ -176,7 +178,7 @@ last part is mostly for debugging as it still constitutes a possibly deep and/or mixed list, not necessarily of the same depth as the original data. The error occurs when traversing the - list and whatever's left to decode is simply returned as is.</p> + list and whatever is left to decode is simply returned as is.</p> <p>However, if the input <c><anno>Data</anno></c> is a pure binary, the third part of the error tuple is guaranteed to be a binary as @@ -191,7 +193,7 @@ of a Unicode type, an error occurs whenever an integer <list type="bulleted"> <item>greater than <c>16#10FFFF</c> - (the maximum unicode character),</item> + (the maximum Unicode character),</item> <item>in the range <c>16#D800</c> to <c>16#DFFF</c> (invalid range reserved for UTF-16 surrogate pairs)</item> </list> @@ -205,14 +207,14 @@ (like the upper bits of the bytes being wrong), the bytes are decoded to a too large number, the bytes are decoded to a code-point in the - invalid unicode - range or encoding is "overlong", meaning that a + invalid Unicode + range, or encoding is "overlong", meaning that a number should have been encoded in fewer bytes. The case of a truncated UTF is handled specially, see the paragraph about incomplete binaries below. If <c><anno>InEncoding</anno></c> is <c>latin1</c>, binaries are always valid as long as they contain whole bytes, - as each byte falls into the valid iso-latin-1 range.</item> + as each byte falls into the valid ISO-latin-1 range.</item> </list> @@ -250,7 +252,7 @@ ever be decoded.</p> <p>If any parameters are of the wrong type, the list structure - is invalid (a number as tail) or the binaries does not contain + is invalid (a number as tail) or the binaries do not contain whole bytes (bit-strings), a <c>badarg</c> exception is thrown.</p> @@ -258,28 +260,27 @@ </func> <func> <name name="characters_to_binary" arity="1"/> - <fsummary>Convert a collection of characters to an UTF-8 binary</fsummary> + <fsummary>Convert a collection of characters to a UTF-8 binary</fsummary> <desc> - <p>Same as characters_to_binary(Data, unicode, unicode).</p> + <p>Same as <c>characters_to_binary(<anno>Data</anno>, unicode, unicode)</c>.</p> </desc> </func> <func> <name name="characters_to_binary" arity="2"/> - <fsummary>Convert a collection of characters to an UTF-8 binary</fsummary> + <fsummary>Convert a collection of characters to a UTF-8 binary</fsummary> <desc> - <p>Same as characters_to_binary(<anno>Data</anno>, <anno>InEncoding</anno>, unicode).</p> + <p>Same as <c>characters_to_binary(<anno>Data</anno>, <anno>InEncoding</anno>, unicode)</c>.</p> </desc> </func> <func> <name name="characters_to_binary" arity="3"/> - <fsummary>Convert a collection of characters to an UTF-8 binary</fsummary> + <fsummary>Convert a collection of characters to a UTF-8 binary</fsummary> <desc> - <p>This function behaves as <seealso - marker="#characters_to_list/2"> - characters_to_list/2</seealso>, but produces an binary - instead of a unicode list. The + <p>Behaves as <seealso marker="#characters_to_list/2"> + <c>characters_to_list/2</c></seealso>, but produces an binary + instead of a Unicode list. The <c><anno>InEncoding</anno></c> defines how input is to be interpreted if binaries are present in the <c>Data</c>, while <c><anno>OutEncoding</anno></c> defines in what format output is to be @@ -294,7 +295,7 @@ <p>Errors and exceptions occur as in <seealso marker="#characters_to_list/2"> - characters_to_list/2</seealso>, but the second element + <c>characters_to_list/2</c></seealso>, but the second element in the <c>error</c> or <c>incomplete</c> tuple will be a <c>binary()</c> and not a <c>list()</c>.</p> @@ -304,16 +305,18 @@ <func> <name name="encoding_to_bom" arity="1"/> <fsummary>Create a binary UTF byte order mark from encoding.</fsummary> - <type_desc variable="Bin">A binary() of byte_size 4 or more.</type_desc> + <type_desc variable="Bin"> + A <c>binary()</c> such that <c>byte_size(<anno>Bin</anno>) >= 4</c>. + </type_desc> <desc> - <p>Create an UTF byte order mark (BOM) as a binary from the + <p>Create a UTF byte order mark (BOM) as a binary from the supplied <c><anno>InEncoding</anno></c>. The BOM is, if supported at all, expected to be placed first in UTF encoded files or messages.</p> <p>The function returns <c><<>></c> for the - <c>latin1</c> encoding, there is no BOM for ISO-latin-1.</p> + <c>latin1</c> encoding as there is no BOM for ISO-latin-1.</p> <p>It can be noted that the BOM for UTF-8 is seldom used, and it is really not a <em>byte order</em> mark. There are obviously no diff --git a/lib/stdlib/doc/src/unicode_usage.xml b/lib/stdlib/doc/src/unicode_usage.xml index bbcd49a934..320b5b2e84 100644 --- a/lib/stdlib/doc/src/unicode_usage.xml +++ b/lib/stdlib/doc/src/unicode_usage.xml @@ -1,4 +1,4 @@ -<?xml version="1.0" encoding="latin1" ?> +<?xml version="1.0" encoding="utf8" ?> <!DOCTYPE chapter SYSTEM "chapter.dtd"> <chapter> @@ -33,14 +33,14 @@ <file>unicode_usage.xml</file> </header> <p>Implementing support for Unicode character sets is an ongoing process. The Erlang Enhancement Proposal (EEP) 10 outlines the basics of Unicode support and also specifies a default encoding in binaries that all Unicode-aware modules should handle in the future.</p> -<p>The functionality described in EEP10 is implemented in Erlang/OTP as of R13A, but that's by no means the end of it. More functionality will be needed in the future and more OTP-libraries might need updating to cope with Unicode data. One example of future development is obvious when reading this manual, our documentation format is limited to the ISO-latin-1 character range, why no Unicode characters beyond that range will occur in this document.</p> +<p>The functionality described in EEP10 is implemented in Erlang/OTP as of R13A, but that is by no means the end of it. More functionality will be needed in the future and more OTP-libraries might need updating to cope with Unicode data.</p> <p>This guide outlines the current Unicode support and gives a couple of recipes for working with Unicode data.</p> <section> -<title>What Unicode is</title> +<title>What Unicode Is</title> <p>Unicode is a standard defining codepoints (numbers) for all known, living or dead, scripts. In principle, every known symbol used in any language has a Unicode codepoint.</p> <p>Unicode codepoints are defined and published by the <em>Unicode Consortium</em>, which is a non profit organization.</p> <p>Support for Unicode is increasing throughout the world of computing, as the benefits of one common character set are overwhelming when programs are used in a global environment.</p> -<p>Along with the base of the standard, the codepoints for all the scripts, there are a couple of encoding standards available. Different operating systems and tools support different encodings. For example Linux and MacOS X has chosen the UTF-8 encoding, which is backwards compatible with 7-bit ASCII and therefore affects programs written in plain English the least. Windows® on the other hand supports a limited version of UTF-16, namely all the code planes where the characters can be stored in one single 16-bit entity, which includes most living languages.</p> +<p>Along with the base of the standard, the codepoints for all the scripts, there are a couple of encoding standards available. Different operating systems and tools support different encodings. For example Linux and MacOSX has chosen the UTF-8 encoding, which is backwards compatible with 7-bit ASCII and therefore affects programs written in plain English the least. Windows® on the other hand supports a limited version of UTF-16, namely all the code planes where the characters can be stored in one single 16-bit entity, which includes most living languages.</p> <p>The most widely spread encodings are:</p> <taglist> <tag>UTF-8</tag> @@ -56,38 +56,47 @@ <p>Additionally, the codepoint 16#FEFF is used for byte order marks (BOM's) and use of that character is not encouraged in other contexts than that. It actually is valid though, as the character "ZWNBS" (Zero Width Non Breaking Space). BOM's are used to identify encodings and byte order for programs where such parameters are not known in advance. Byte order marks are more seldom used than one could expect, but their use is becoming more widely spread as they provide the means for programs to make educated guesses about the Unicode format of a certain file.</p> </section> <section> -<title>Standard Unicode representation in Erlang</title> +<title>Standard Unicode Representation in Erlang</title> <p>In Erlang, strings are actually lists of integers. A string is defined to be encoded in the ISO-latin-1 (ISO8859-1) character set, which is, codepoint by codepoint, a sub-range of the Unicode character set.</p> <p>The standard list encoding for strings is therefore easily extendible to cope with the whole Unicode range: A Unicode string in Erlang is simply a list containing integers, each integer being a valid Unicode codepoint and representing one character in the Unicode character set.</p> -<p>Regular Erlang strings in ISO-latin-1 are a subset of their Unicode strings.</p> +<p>Regular Erlang strings in ISO-latin-1 are a subset of their Unicode +strings.</p> -<p>Binaries on the other hand are more troublesome. For performance reasons, programs often store textual data in binaries instead of lists, mainly because they are more compact (one byte per character instead of two words per character, as is the case with lists). Using erlang:list_to_binary/1, an regular Erlang string can be converted into a binary, effectively using the ISO-latin-1 encoding in the binary - one byte per character. This is very convenient for those regular Erlang strings, but cannot be done for Unicode lists.</p> +<p>Binaries on the other hand are more troublesome. For performance reasons, programs often store textual data in binaries instead of lists, mainly because they are more compact (one byte per character instead of two words per character, as is the case with lists). Using <c>erlang:list_to_binary/1</c>, a regular Erlang string can be converted into a binary, effectively using the ISO-latin-1 encoding in the binary - one byte per character. This is very convenient for those regular Erlang strings, but cannot be done for Unicode lists.</p> <p>As the UTF-8 encoding is widely spread and provides the most compact storage, it is selected as the standard encoding of Unicode characters in binaries for Erlang.</p> <p>The standard binary encoding is used whenever a library function in Erlang should cope with Unicode data in binaries, but is of course not enforced when communicating externally. Functions and bit-syntax exist to encode and decode both UTF-8, UTF-16 and UTF-32 in binaries. Library functions dealing with binaries and Unicode in general, however, only deal with the default encoding.</p> -<p>Character data may be combined from several sources, sometimes available in a mix of strings and binaries. Erlang has for long had the concept of iodata or iolists, where binaries and lists can be combined to represent a sequence of bytes. In the same way, the Unicode aware modules often allow for combinations of binaries and lists where the binaries have characters encoded in UTF-8 and the lists contain such binaries or numbers representing Unicode codepoints:</p> +<p>Character data may be combined from several sources, sometimes available in a mix of strings and binaries. Erlang has for long had the concept of <c>iodata</c> or <c>iolists</c>, where binaries and lists can be combined to represent a sequence of bytes. In the same way, the Unicode aware modules often allow for combinations of binaries and lists where the binaries have characters encoded in UTF-8 and the lists contain such binaries or numbers representing Unicode codepoints:</p> <code type="none"> unicode_binary() = binary() with characters encoded in UTF-8 coding standard -unicode_char() = integer() representing valid unicode codepoint +unicode_char() = integer() >= 0 representing valid Unicode codepoint chardata() = charlist() | unicode_binary() charlist() = [unicode_char() | unicode_binary() | charlist()] a unicode_binary is allowed as the tail of the list</code> -<p>The module <c>unicode</c> in stdlib even supports similar mixes with binaries containing other encodings than UTF-8, but that is a special case to allow for conversions to and from external data:</p> +<p>The module <c>unicode</c> in STDLIB even supports similar mixes with binaries containing other encodings than UTF-8, but that is a special case to allow for conversions to and from external data:</p> <code type="none"> -external_unicode_binary() = binary() with characters coded in a user specified Unicode - encoding other than UTF-8 (UTF-16 or UTF-32) +external_unicode_binary() = binary() with characters coded in + a user specified Unicode encoding other than UTF-8 (UTF-16 or UTF-32) external_chardata() = external_charlist() | external_unicode_binary() -external_charlist() = [unicode_char() | external_unicode_binary() | external_charlist()] - an external_unicode_binary is allowed as the tail of the list</code> +external_charlist() = [unicode_char() | + external_unicode_binary() | + external_charlist()] + an external_unicode_binary() is allowed as the tail of the list</code> </section> <section> -<title>Basic language support for Unicode</title> -<p>First of all, Erlang is still defined to be written in the ISO-latin-1 character set. Functions have to be named in that character set, atoms are restricted to ISO-latin-1 and regular strings are still lists of characters 0..255 in the ISO-latin-1 encoding. This has not (yet) changed, but the language has been slightly extended to cope with Unicode characters and encodings.</p> - +<title>Basic Language Support for Unicode</title> +<p><marker id="unicode_in_erlang"/>As of Erlang/OTP R16 Erlang can be +written in ISO-latin-1 or Unicode (UTF-8). The details on how to state +the encoding of an Erlang source file can be found in <seealso +marker="stdlib:epp#encoding">epp(3)</seealso>. Strings and comments +can be written using Unicode, but functions still have to be named in +ISO-latin-1 and atoms are restricted to ISO-latin-1. Erlang/OTP R18 is +expected to handle functions named in Unicode as well as Unicode +atoms.</p> <section> <title>Bit-syntax</title> <p>The bit-syntax contains types for coping with binary data in the three main encodings. The types are named <c>utf8</c>, <c>utf16</c> and <c>utf32</c> respectively. The <c>utf16</c> and <c>utf32</c> types can be in a big- or little-endian variant:</p> @@ -101,74 +110,79 @@ Bin3 = <<$H/utf32-little, $e/utf32-little, $l/utf32-little, $l/utf32-littl Bin4 = <<"Hello"/utf16>>,</code> </section> <section> -<title>String- and character-literals</title> -<warning> -<p>The literal syntax described here may be subject to change in R13B, it has not yet passed the usual process for language changes approval.</p> -</warning> -<p>It is convenient to be able to write a list of Unicode characters in the string syntax. However, the language specifies strings as being in the ISO-latin-1 character set which the compiler tool chain as well as many other tools expect.</p> -<p>Also the source code is (for now) still expected to be written using the ISO-latin-1 character set, why Unicode characters beyond that range cannot be entered in string literals.</p> -<p>To make it easier to enter Unicode characters in the shell, it allows strings with Unicode characters on input, immediately converting them to regular lists of integers. They will, by the evaluator etc be viewed as if they were input using the regular list syntax, which is - in the end - how the language actually treats them. They will in the same way not be output as strings by i.e <c>io:write/2</c> or <c>io:format/3</c> unless the format string supplied to <c>io:format</c> uses the Unicode translation modifier (which we will talk about later).</p> -<p>For source code, there is an extension to the \OOO (backslash followed by three octal numbers) and \xHH (backslash followed by 'x', followed by two hexadecimal characters) syntax, namely \x{H ...} (a backslash followed by an 'x', followed by left curly bracket, any number of hexadecimal digits and a terminating right curly bracket). This allows for entering characters of any codepoint literally in a string. The string is immediately converted into a list by the scanner however, which is obvious when calling it directly:</p> -<pre> -1> <input>erl_scan:string("\"X\".").</input> -{ok,[{string,1,"X"},{dot,1}],1} -2> <input>erl_scan:string("\"\x{400}\".").</input> -{ok,[{'[',1},{integer,1,1024},{']',1},{dot,1}],1}</pre> -<p>Character literals, or rather integers representing Unicode codepoints can be expressed in a similar way using $\x{H ...}:</p> -<pre> -4> <input>$\x{400}.</input> -1024</pre> -<p>This also is a translation by the scanner:</p> -<pre> -5> <input>erl_scan:string("$Y.").</input> -{ok,[{char,1,89},{dot,1}],1} -6> <input>erl_scan:string("$\x{400}.").</input> -{ok,[{integer,1,1024},{dot,1}],1}</pre> -<p>In the shell, if using a Unicode input device, '$' can be followed directly by a Unicode character producing an integer. In the following example, let's imagine the character 'c' is actually a Cyrillic 's' (looking fairly similar):</p> +<title>String- and Character-literals</title> +<p>For source code, there is an extension to the <c>\</c>OOO (backslash +followed by three octal numbers) and <c>\x</c>HH (backslash followed by <c>x</c>, +followed by two hexadecimal characters) syntax, namely <c>\x{</c>H ...<c>}</c> (a +backslash followed by an <c>x</c>, followed by left curly bracket, any +number of hexadecimal digits and a terminating right curly bracket). +This allows for entering characters of any codepoint literally in a +string even when the encoding is ISO-latin-1.</p> +</section> +<p>In the shell, if using a Unicode input device, <c>$</c> can be followed directly by a Unicode character producing an integer. In the following example the codepoint of a Cyrillic <c>s</c> is output:</p> <pre> -7> <input>$c.</input> +7> <input>$с.</input> 1089</pre> </section> -<p>The literal syntax allowing Unicode characters is to be viewed as "syntactic sugar", but is, as such, fairly useful.</p> -</section> <section> -<title>The interactive shell</title> +<title>The Interactive Shell</title> <p>The interactive Erlang shell, when started towards a terminal or started using the <c>werl</c> command on windows, can support Unicode input and output.</p> -<p>On Windows®, proper operation requires that a suitable font is installed and selected for the Erlang application to use. If no suitable font is available on your system, try installing the DejaVu fonts (dejavu-fonts.org), which are freely available and then select that font in the Erlang shell application.</p> -<p>On Unix®-like operating systems, the terminal should be able to handle UTF-8 on input and output (modern versions of XTerm, KDE konsole and the Gnome terminal do for example) and your locale settings have to be proper. As an example, my LANG environment variable is set as this:</p> +<p>On Windows®, proper operation requires that a suitable font is installed and selected for the Erlang application to use. If no suitable font is available on your system, try installing the DejaVu fonts (<c>dejavu-fonts.org</c>), which are freely available and then select that font in the Erlang shell application.</p> +<p>On Unix®-like operating systems, the terminal should be able to handle UTF-8 on input and output (modern versions of XTerm, KDE konsole and the Gnome terminal do for example) and your locale settings have to be proper. As an example, my <c>LANG</c> environment variable is set as this:</p> <pre> $ <input>echo $LANG</input> en_US.UTF-8</pre> -<p>Actually, most systems handle the LC_CTYPE variable before LANG, so if that is set, it has to be set to UTF-8:</p> +<p>Actually, most systems handle the <c>LC_CTYPE</c> variable before <c>LANG</c>, so if that is set, it has to be set to <c>UTF-8</c>:</p> <pre> $ echo <input>$LC_CTYPE</input> en_US.UTF-8</pre> -<p>The LANG or LC_CTYPE setting should be consistent with what the terminal is capable of, there is no portable way for Erlang to ask the actual terminal about its UTF-8 capacity, we have to rely on the language and character type settings.</p> +<p>The <c>LANG</c> or <c>LC_CTYPE</c> setting should be consistent with what the terminal is capable of, there is no portable way for Erlang to ask the actual terminal about its UTF-8 capacity, we have to rely on the language and character type settings.</p> <p>To investigate what Erlang thinks about the terminal, the <c>io:getopts()</c> call can be used when the shell is started:</p> <pre> $ <input>LC_CTYPE=en_US.ISO-8859-1 erl</input> -Erlang R13A (erts-5.7) [source] [64-bit] [smp:4:4] [rq:4] [async-threads:0] [kernel-poll:false] +Erlang R16B (erts-5.10) [source] [async-threads:0] [hipe] [kernel-poll:false] -Eshell V5.7 (abort with ^G) -1> <input>lists:keyfind(encoding,1,io:getopts()).</input> +Eshell V5.10 (abort with ^G) +1> <input>lists:keyfind(encoding, 1, io:getopts()).</input> {encoding,latin1} 2> <input>q().</input> ok $ <input>LC_CTYPE=en_US.UTF-8 erl</input> -Erlang R13A (erts-5.7) [source] [64-bit] [smp:4:4] [rq:4] [async-threads:0] [kernel-poll:false] +Erlang R16B (erts-5.10) [source] [async-threads:0] [hipe] [kernel-poll:false] -Eshell V5.7 (abort with ^G) -1> <input>lists:keyfind(encoding,1,io:getopts()).</input> +Eshell V5.10 (abort with ^G) +1> <input>lists:keyfind(encoding, 1, io:getopts()).</input> {encoding,unicode} 2></pre> <p>When (finally?) everything is in order with the locale settings, fonts and the terminal emulator, you probably also have discovered a way to input characters in the script you desire. For testing, the simplest way is to add some keyboard mappings for other languages, usually done with some applet in your desktop environment. In my KDE environment, I start the KDE Control Center (Personal Settings), select "Regional and Accessibility" and then "Keyboard Layout". On Windows XP®, I start Control Panel->Regional and Language Options, select the Language tab and click the Details... button in the square named "Text services and input Languages". Your environment probably provides similar means of changing the keyboard layout. Make sure you have a way to easily switch back and forth between keyboards if you are not used to this, entering commands using a Cyrillic character set is, as an example, not easily done in the Erlang shell.</p> <p>Now you are set up for some Unicode input and output. The simplest thing to do is of course to enter a string in the shell:</p> -<image file="ushell1.gif"><icaption>Cyrillic characters in an Erlang shell</icaption></image> +<pre> +$ <input>erl</input> +Erlang R16B (erts-5.10) [source] [async-threads:0] [hipe] [kernel-poll:false] + +Eshell V5.10 (abort with ^G) +1> <input>lists:keyfind(encoding, 1, io:getopts()).</input> +{encoding,unicode} +2> <input>"уницоде"</input> +"уницоде" +3> <input>io:format("~ts~n", [v(2)]).</input> +уницоде +ok +4> </pre> <p>While strings can be input as Unicode characters, the language elements are still limited to the ISO-latin-1 character set. Only character constants and strings are allowed to be beyond that range:</p> -<image file="ushell2.gif"><icaption>Unicode characters in allowed and disallowed context</icaption></image> +<pre> +$ <input>erl</input> +Erlang R16B (erts-5.10) [source] [async-threads:0] [hipe] [kernel-poll:false] + +Eshell V5.10 (abort with ^G) +1> <input>$ξ</input> +958 +2> <input>уницоде.</input> +* 1: illegal character +2> </pre> </section> <section> -<title>Unicode file names</title> +<title>Unicode File Names</title> <p>Most modern operating systems support Unicode file names in some way or another. There are several different ways to do this and Erlang by default treats the different approaches differently:</p> <taglist> <tag>Mandatory Unicode file naming</tag> @@ -183,7 +197,7 @@ Eshell V5.7 (abort with ^G) <p>A raw file name is not a list, but a binary. Many non core applications still do not handle file names given as binaries, why such raw names are avoided by default. This means that systems having implemented Unicode file naming through transparent file systems and an UTF-8 convention, do not by default have Unicode file naming turned on. Explicitly turning Unicode file name handling on for these types of systems is considered experimental.</p> </item> </taglist> -<p>The Unicode file naming support was introduced with OTP release R14B01. A VM operating in Unicode file mode can work with files having names in any language or character set (as long as it's supported by the underlying OS and file system). The Unicode character list is used to denote file or directory names and if the file system content is listed, you will also be able to get Unicode lists as return value. The support lies in the kernel and stdlib modules, why most applications (that does not explicitly require the file names to be in the ISO-latin-1 range) will benefit from the Unicode support without change.</p> +<p>The Unicode file naming support was introduced with OTP release R14B01. A VM operating in Unicode file mode can work with files having names in any language or character set (as long as it is supported by the underlying OS and file system). The Unicode character list is used to denote file or directory names and if the file system content is listed, you will also be able to get Unicode lists as return value. The support lies in the Kernel and STDLIB modules, why most applications (that does not explicitly require the file names to be in the ISO-latin-1 range) will benefit from the Unicode support without change.</p> <p>On Operating systems with mandatory Unicode file names, this means that you more easily conform to the file names of other (non Erlang) applications, and you can also process file names that, at least on Windows, were completely inaccessible (due to having names that could not be represented in ISO-latin-1). Also you will avoid creating incomprehensible file names on MacOSX as the vfs layer of the OS will accept all your file names as UTF-8 and will not rewrite them.</p> @@ -193,31 +207,32 @@ Eshell V5.7 (abort with ^G) <p>It is worth noting that the file <c>encoding</c> options given when opening a file has nothing to do with the file <em>name</em> encoding convention. You can very well open files containing UTF-8 but having file names in ISO-latin-1 or vice versa.</p> -<note>Erlang drivers and NIF shared objects still can not be named with names containing codepoints beyond 127. This is a known limitation to be removed in a future release. Erlang modules however can, but it is definitely not a good idea and is still considered experimental.</note> +<note><p>Erlang drivers and NIF shared objects still can not be named with names containing codepoints beyond 127. This is a known limitation to be removed in a future release. Erlang modules however can, but it is definitely not a good idea and is still considered experimental.</p></note> <section> -<title>Notes about raw file names and automatic file name conversion</title> -<p>Raw file names is introduced together with Unicode file name support in erts-5.8.2 (OTP R14B01). The reason "raw file names" is introduced in the system is to be able to consistently represent file names given in different encodings on the same system. Having the VM automatically translate a file name that is not in UTF-8 to a list of Unicode characters might seem practical, but this would open up for both duplicate file names and other inconsistent behavior. Consider a directory containing a file named "bj�rn" in ISO-latin-1, while the Erlang VM is operating in Unicode file name mode (and therefore expecting UTF-8 file naming). The ISO-latin-1 name is not valid UTF-8 and one could be tempted to think that automatic conversion in for example <c>file:list_dir/1</c> is a good idea. But what would happen if we later tried to open the file and have the name as a Unicode list (magically converted from the ISO-latin-1 file name)? The VM will convert the file name given to UTF-8, as this is the encoding expected. Effectively this means trying to open the file named <<"bj�rn"/utf8>>. This file does not exist, and even if it existed it would not be the same file as the one that was listed. We could even create two files named "bj�rn", one named in the UTF-8 encoding and one not. If <c>file:list_dir/1</c> would automatically convert the ISO-latin-1 file name to a list, we would get two identical file names as the result. To avoid this, we need to differentiate between file names being properly encoded according to the Unicode file naming convention (i.e. UTF-8) and file names being invalid under the encoding. This is done by representing invalid encoding as "raw" file names, i.e. as binaries.</p> -<p>The core system of Erlang (kernel and stdlib) accepts raw file names except for loadable drivers and executables invoked using <c>open_port({spawn, ...} ...)</c>. <c>open_port({spawn_executable, ...} ...)</c> however does accept them. As mentioned earlier, the arguments given in the option list to <c>open_port({spawn_executable, ...} ...)</c> undergo the same conversion as the file names, meaning that the executable will be provided with arguments in UTF-8 as well. This translation is avoided consistently with how the file names are treated, by giving the argument as a binary.</p> +<title>Notes About Raw File Names and Automatic File Name Conversion</title> + +<p>Raw file names is introduced together with Unicode file name support in erts-5.8.2 (OTP R14B01). The reason "raw file names" is introduced in the system is to be able to consistently represent file names given in different encodings on the same system. Having the VM automatically translate a file name that is not in UTF-8 to a list of Unicode characters might seem practical, but this would open up for both duplicate file names and other inconsistent behavior. Consider a directory containing a file named "björn" in ISO-latin-1, while the Erlang VM is operating in Unicode file name mode (and therefore expecting UTF-8 file naming). The ISO-latin-1 name is not valid UTF-8 and one could be tempted to think that automatic conversion in for example <c>file:list_dir/1</c> is a good idea. But what would happen if we later tried to open the file and have the name as a Unicode list (magically converted from the ISO-latin-1 file name)? The VM will convert the file name given to UTF-8, as this is the encoding expected. Effectively this means trying to open the file named <<"björn"/utf8>>. This file does not exist, and even if it existed it would not be the same file as the one that was listed. We could even create two files named "björn", one named in the UTF-8 encoding and one not. If <c>file:list_dir/1</c> would automatically convert the ISO-latin-1 file name to a list, we would get two identical file names as the result. To avoid this, we need to differentiate between file names being properly encoded according to the Unicode file naming convention (i.e. UTF-8) and file names being invalid under the encoding. This is done by representing invalid encoding as "raw" file names, i.e. as binaries.</p> +<p>The core system of Erlang (Kernel and STDLIB) accepts raw file names except for loadable drivers and executables invoked using <c>open_port({spawn, ...} ...)</c>. <c>open_port({spawn_executable, ...} ...)</c> however does accept them. As mentioned earlier, the arguments given in the option list to <c>open_port({spawn_executable, ...} ...)</c> undergo the same conversion as the file names, meaning that the executable will be provided with arguments in UTF-8 as well. This translation is avoided consistently with how the file names are treated, by giving the argument as a binary.</p> <p>To force Unicode file name translation mode on systems where this is not the default is considered experimental in OTP R14B01 due to the raw file names possibly being a new experience to the programmer and that the non core applications of OTP are not tested for compliance with raw file names yet. Unicode file name translation is expected to be default in future releases.</p> -<p>If working with raw file names, one can still conform to the encoding convention of the Erlang VM by using the <c>file:native_name_encoding/0</c> function, which returns either the atom <c>latin1</c> or the atom <c>utf8</c> depending on the file name translation mode. On Linux, a VM started without explicitly stating the file name translation mode will default to <c>latin1</c> as the native file name encoding, why file names on the disk encoded as UTF-8 will be returned as a list of the names interpreted as ISO-latin-1. The "UTF-8 list" is not a practical type for displaying or operating on in Erlang, but it is backward compatible and usable in all functions requiring a file name. On Windows and MacOSX, the default behavior is that of file name translation, why the <c>file:native_name_encoding/0</c> by default returns <c>utf8</c> on those systems (the fact that Windows actually does not use UTF-8 on the file system level can safely be ignored by the Erlang programmer). The default behavior can be changed using the <c>+fnu</c> or <c>+fnl</c> options to the VM, see the <c>erl</c> command manual page.</p> +<p>If working with raw file names, one can still conform to the encoding convention of the Erlang VM by using the <c>file:native_name_encoding/0</c> function, which returns either the atom <c>latin1</c> or the atom <c>utf8</c> depending on the file name translation mode. On Linux, a VM started without explicitly stating the file name translation mode will default to <c>latin1</c> as the native file name encoding, why file names on the disk encoded as UTF-8 will be returned as a list of the names interpreted as ISO-latin-1. The "UTF-8 list" is not a practical type for displaying or operating on in Erlang, but it is backward compatible and usable in all functions requiring a file name. On Windows and MacOSX, the default behavior is that of file name translation, why the <c>file:native_name_encoding/0</c> by default returns <c>utf8</c> on those systems (the fact that Windows actually does not use UTF-8 on the file system level can safely be ignored by the Erlang programmer). The default behavior can be changed using the <c>+fnu</c> or <c>+fnl</c> options to the VM, see the <seealso marker="erts:erl"><c>erl(1)</c></seealso> command manual page.</p> <p>Even if you are operating without Unicode file naming translation automatically done by the VM, you can access and create files with names in UTF-8 encoding by using raw file names encoded as UTF-8. Enforcing the UTF-8 encoding regardless of the mode the Erlang VM is started in might, in some circumstances be a good idea, as the convention of using UTF-8 file names is spreading.</p> </section> <section> -<title>Notes about MacOSX</title> +<title>Notes About MacOSX</title> <p>MacOSXs vfs layer enforces UTF-8 file names in a quite aggressive way. Older versions did this by simply refusing to create non UTF-8 conforming file names, while newer versions replace offending bytes with the sequence "%HH", where HH is the original character in hexadecimal notation. As Unicode translation is enabled by default on MacOSX, the only way to come up against this is to either start the VM with the <c>+fnl</c> flag or to use a raw file name in <c>latin1</c> encoding. In that case, the file can not be opened with the same name as the one used to create this. The problem is by design in newer versions of MacOSX.</p> -<p>MacOSX also reorganizes the names of files so that the representation of accents etc is denormalized, i.e. the character <c>�</c> is represented as the codepoints [111,776], where 111 is the character <c>o</c> and 776 is a special accent character. This type of denormalized Unicode is otherwise very seldom used and Erlang normalizes those file names on retrieval, so that denormalized file names is not passed up to the Erlang application. In Erlang the file name "bj�rn" is retrieved as [98,106,246,114,110], not as [98,106,117,776,114,110], even though the file system might think differently.</p> +<p>MacOSX also reorganizes the names of files so that the representation of accents etc is denormalized, i.e. the character <c>ö</c> is represented as the codepoints [111,776], where 111 is the character <c>o</c> and 776 is a special accent character. This type of denormalized Unicode is otherwise very seldom used and Erlang normalizes those file names on retrieval, so that denormalized file names is not passed up to the Erlang application. In Erlang the file name "björn" is retrieved as [98,106,246,114,110], not as [98,106,117,776,114,110], even though the file system might think differently.</p> </section> </section> <section> -<title>Unicode in environment variables and parameters</title> +<title>Unicode in Environment Variables and Parameters</title> <p>Environment variables and their interpretation is handled much in the same way as file names. If Unicode file names are enabled, environment variables as well as parameters to the Erlang VM are expected to be in Unicode.</p> <p>If Unicode file names are enabled, the calls to <seealso marker="kernel:os#getenv/0"><c>os:getenv/0</c></seealso>, <seealso marker="kernel:os#getenv/1"><c>os:getenv/1</c></seealso> and <seealso marker="kernel:os#putenv/2"><c>os:putenv/2</c></seealso> will handle Unicode strings. On Unix-like platforms, the built-in functions will translate environment variables in UTF-8 to/from Unicode strings, possibly with codepoints > 255. On Windows the Unicode versions of the environment system API will be used, also allowing for codepoints > 255.</p> <p>On Unix-like operating systems, parameters are expected to be UTF-8 without translation if Unicode file names are enabled.</p> </section> <section> -<title>Unicode-aware modules</title> -<p>Most of the modules in Erlang/OTP are of course Unicode-unaware in the sense that they have no notion of Unicode and really shouldn't have. Typically they handle non-textual or byte-oriented data (like <c>gen_tcp</c> etc).</p> +<title>Unicode-aware Modules</title> +<p>Most of the modules in Erlang/OTP are of course Unicode-unaware in the sense that they have no notion of Unicode and really should not have. Typically they handle non-textual or byte-oriented data (like <c>gen_tcp</c> etc).</p> <p>Modules that actually handle textual data (like <c>io_lib</c>, <c>string</c> etc) are sometimes subject to conversion or extension to be able to handle Unicode characters.</p> <p>Fortunately, most textual data has been stored in lists and range checking has been sparse, why modules like <c>string</c> works well for Unicode lists with little need for conversion or extension.</p> <p>Some modules are however changed to be explicitly Unicode-aware. These modules include:</p> @@ -230,7 +245,7 @@ Eshell V5.7 (abort with ^G) <item> <p>The <seealso marker="stdlib:io">io</seealso> module has been extended along with the actual I/O-protocol to handle Unicode data. This means that several functions require binaries to be in UTF-8 and there are modifiers to formatting control sequences to allow for outputting of Unicode strings.</p> </item> -<tag><c>file</c>, <c>group</c> and <c>user</c></tag> +<tag><c>file</c>, <c>group</c>, <c>user</c></tag> <item> <p>I/O-servers throughout the system are able both to handle Unicode data and has options for converting data upon actual output or input to/from the device. As shown earlier, the <seealso marker="stdlib:shell">shell</seealso> has support for Unicode terminals and the <seealso marker="kernel:file">file</seealso> module allows for translation to and from various Unicode formats on disk.</p> <p>The actual reading and writing of files with Unicode data is however not best done with the <c>file</c> module as its interface is byte oriented. A file opened with a Unicode encoding (like UTF-8), is then best read or written using the <seealso marker="stdlib:io">io</seealso> module.</p> @@ -247,10 +262,10 @@ Eshell V5.7 (abort with ^G) <p>The module <seealso marker="stdlib:string">string</seealso> works perfect for Unicode strings as well as for ISO-latin-1 strings with the exception of the language-dependent <seealso marker="stdlib:string#to_upper/1">to_upper</seealso> and <seealso marker="stdlib:string#to_lower/1">to_lower</seealso> functions, which are only correct for the ISO-latin-1 character set. Actually they can never function correctly for Unicode characters in their current form, there are language and locale issues as well as multi-character mappings to consider when conversion text between cases. Converting case in an international environment is a big subject not yet addressed in OTP.</p> </section> <section> -<title>Unicode recipes</title> +<title>Unicode Recipes</title> <p>When starting with Unicode, one often stumbles over some common issues. I try to outline some methods of dealing with Unicode data in this section.</p> <section> -<title>Byte order marks</title> +<title>Byte Order Marks</title> <p>A common method of identifying encoding in text-files is to put a byte order mark (BOM) first in the file. The BOM is the codepoint 16#FEFF encoded in the same way as the rest of the file. If such a file is to be read, the first few bytes (depending on encoding) is not part of the actual text. This code outlines how to open a file which is believed to have a BOM and set the files encoding and position for further sequential reading (preferably using the <seealso marker="stdlib:io">io</seealso> module). Note that error handling is omitted from the code:</p> <code> open_bom_file_for_reading(File) -> @@ -261,7 +276,7 @@ open_bom_file_for_reading(File) -> io:setopts(F,[{encoding,Type}]), {ok,F}. </code> -<p>The <c>unicode:bom_to_encoding/1</c> function identifies the encoding from a binary of at least four bytes. It returns, along with an term suitable for setting the encoding of the file, the actual length of the BOM, so that the file position can be set accordingly. Note that <c>file:position</c> always works on byte-offsets, so that the actual byte-length of the BOM is needed.</p> +<p>The <c>unicode:bom_to_encoding/1</c> function identifies the encoding from a binary of at least four bytes. It returns, along with an term suitable for setting the encoding of the file, the actual length of the BOM, so that the file position can be set accordingly. Note that <c>file:position/2</c> always works on byte-offsets, so that the actual byte-length of the BOM is needed.</p> <p>To open a file for writing and putting the BOM first is even simpler:</p> <code> open_bom_file_for_writing(File,Encoding) -> @@ -273,24 +288,33 @@ open_bom_file_for_writing(File,Encoding) -> <p>In both cases the file is then best processed using the <c>io</c> module, as the functions in <c>io</c> can handle codepoints beyond the ISO-latin-1 range.</p> </section> <section> -<title>Formatted input and output</title> -<p>When reading and writing to Unicode-aware entities, like the User or a file opened for Unicode translation, you will probably want to format text strings using the functions in <seealso marker="stdlib:io">io</seealso> or <seealso marker="stdlib:io_lib">io_lib</seealso>. For backward compatibility reasons, these functions don't accept just any list as a string, but require e special "translation modifier" when working with Unicode texts. The modifier is "t". When applied to the "s" control character in a formatting string, it accepts all Unicode codepoints and expect binaries to be in UTF-8:</p> +<title>Formatted Input and Output</title> +<p>When reading and writing to Unicode-aware entities, like the User or a file opened for Unicode translation, you will probably want to format text strings using the functions in <seealso marker="stdlib:io">io</seealso> or <seealso marker="stdlib:io_lib">io_lib</seealso>. For backward compatibility reasons, these functions do not accept just any list as a string, but require a special <em>translation modifier</em> when working with Unicode texts. The modifier is <c>t</c>. When applied to the <c>s</c> control character in a formatting string, it accepts all Unicode codepoints and expect binaries to be in UTF-8:</p> <pre> -1> <input>io:format("~ts~n",[<<"���"/utf8>>]).</input> -��� -ok -2> <input>io:format("~s~n",[<<"���"/utf8>>]).</input> +1> <input>io:format("~ts~n",[<<"åäö"/utf8>>]).</input> åäö +ok +2> <input>io:format("~s~n",[<<"åäö"/utf8>>]).</input> +åäö +ok</pre> +<p>Obviously the second <c>io:format/2</c> gives undesired output because the UTF-8 binary is not in latin1. Because ISO-latin-1 is still the defined character set of Erlang, the non prefixed <c>s</c> control character expects ISO-latin-1 in binaries as well as lists.</p> +<p>As long as the data is always lists, the <c>t</c> modifier can be used for any string, but when binary data is involved, care must be taken to make the right choice of formatting characters.</p> +<p>The function <c>format/2</c> in <c>io_lib</c> behaves similarly. This function is defined to return a deep list of characters and the output could easily be converted to binary data for outputting on a device of any kind by a simple <c>erlang:list_to_binary/1</c>. When the translation modifier is used, the list can however contain characters that cannot be stored in one byte. The call to <c>erlang:list_to_binary/1</c> will in that case fail. However, if the I/O server you want to communicate with is Unicode-aware, the list returned can still be used directly:</p> +<pre> +$ <input>erl</input> +Erlang R16B (erts-5.10) [source] [async-threads:0] [hipe] [kernel-poll:false] + +Eshell V5.10 (abort with ^G) +1> <input>io_lib:format("~ts~n", ["θνιψοδε"]).</input> +["θνιψοδε","\n"] +2> <input>io:put_chars(io_lib:format("~ts~n", ["θνιψοδε"])).</input> +θνιψοδε ok</pre> -<p>Obviously the second <c>io:format</c> gives undesired output because the UTF-8 binary is not in latin1. Because ISO-latin-1 is still the defined character set of Erlang, the non prefixed "s" control character expects ISO-latin-1 in binaries as well as lists.</p> -<p>As long as the data is always lists, the "t" modifier can be used for any string, but when binary data is involved, care must be taken to make the tight choice of formatting characters.</p> -<p>The function <c>format</c> in <c>io_lib</c> behaves similarly. This function is defined to return a deep list of characters and the output could easily be converted to binary data for outputting on a device of any kind by a simple <c>erlang:list_to_binary</c>. When the translation modifier is used, the list can however contain characters that cannot be stored in one byte. The call to <c>erlang:list_to_binary</c> will in that case fail. However, if the io_server you want to communicate with is Unicode-aware, the list returned can still be used directly:</p> -<image file="ushell3.gif"><icaption>io_lib:format with Unicode translation</icaption></image> -<p>The Unicode string is returned as a Unicode list, why the return value of <c>io_lib:format</c> no longer qualifies as a regular Erlang string (the function <seealso marker="stdlib:io_lib#deep_char_list/1">io_lib:deep_char_list</seealso> will, as an example, return <c>false</c>). The Unicode list is however valid input to the <seealso marker="stdlib:io#put_chars/2">io:put_chars</seealso> function, so data can be output on any Unicode capable device anyway. If the device is a terminal, characters will be output in the \x{H ...} format if encoding is <c>latin1</c> otherwise in UTF-8 (for the non-interactive terminal - "oldshell" or "noshell") or whatever is suitable to show the character properly (for an interactive terminal - the regular shell). The bottom line is that you can always send Unicode data to the <c>standard_io</c> device. Files will however only accept Unicode codepoints beyond ISO-latin-1 if <c>encoding</c> is set to something else than <c>latin1</c>.</p> +<p>The Unicode string is returned as a Unicode list, which is recognized as such since the Erlang shell uses the Unicode encoding. The Unicode list is valid input to the <seealso marker="stdlib:io#put_chars/2">io:put_chars/2</seealso> function, so data can be output on any Unicode capable device. If the device is a terminal, characters will be output in the <c>\x{</c>H ...<c>}</c> format if encoding is <c>latin1</c> otherwise in UTF-8 (for the non-interactive terminal - "oldshell" or "noshell") or whatever is suitable to show the character properly (for an interactive terminal - the regular shell). The bottom line is that you can always send Unicode data to the <c>standard_io</c> device. Files will however only accept Unicode codepoints beyond ISO-latin-1 if <c>encoding</c> is set to something else than <c>latin1</c>.</p> </section> <section> -<title>Heuristic identification of UTF-8</title> -<p>While it's strongly encouraged that the actual encoding of characters in binary data is known prior to processing, that is not always possible. On a typical Linux® system, there is a mix of UTF-8 and ISO-latin-1 text files and there are seldom any BOM's in the files to identify them.</p> +<title>Heuristic Identification of UTF-8</title> +<p>While it iss strongly encouraged that the actual encoding of characters in binary data is known prior to processing, that is not always possible. On a typical Linux® system, there is a mix of UTF-8 and ISO-latin-1 text files and there are seldom any BOM's in the files to identify them.</p> <p>UTF-8 is designed in such a way that ISO-latin-1 characters with numbers beyond the 7-bit ASCII range are seldom considered valid when decoded as UTF-8. Therefore one can usually use heuristics to determine if a file is in UTF-8 or if it is encoded in ISO-latin-1 (one byte per character) encoding. The <c>unicode</c> module can be used to determine if data can be interpreted as UTF-8:</p> <code> heuristic_encoding_bin(Bin) when is_binary(Bin) -> diff --git a/lib/stdlib/doc/src/ushell1.gif b/lib/stdlib/doc/src/ushell1.gif Binary files differdeleted file mode 100644 index 7c46464fd2..0000000000 --- a/lib/stdlib/doc/src/ushell1.gif +++ /dev/null diff --git a/lib/stdlib/doc/src/ushell1.ps b/lib/stdlib/doc/src/ushell1.ps deleted file mode 100644 index 95bfebf194..0000000000 --- a/lib/stdlib/doc/src/ushell1.ps +++ /dev/null @@ -1,1196 +0,0 @@ -%!PS-Adobe-3.0 -%%Creator: GIMP PostScript file plugin V 1.17 by Peter Kirchgessner -%%Title: ushell1.ps -%%CreationDate: Mon Mar 16 09:53:27 2009 -%%DocumentData: Clean7Bit -%%LanguageLevel: 2 -%%Pages: 1 -%%BoundingBox: 14 14 468 142 -%%EndComments -%%BeginProlog -% Use own dictionary to avoid conflicts -10 dict begin -%%EndProlog -%%Page: 1 1 -% Translate for offset -14.173228346456694 14.173228346456694 translate -% Translate to begin of 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-!ouXLrVlrn3U6PB!S9bks+13$s+135s*t~> -%%EndData -showpage -%%Trailer -end -%%EOF diff --git a/lib/stdlib/src/Makefile b/lib/stdlib/src/Makefile index 14304824d3..575a5cbe4a 100644 --- a/lib/stdlib/src/Makefile +++ b/lib/stdlib/src/Makefile @@ -171,6 +171,7 @@ primary_bootstrap_compiler: \ $(BOOTSTRAP_COMPILER)/ebin/erl_scan.beam \ $(BOOTSTRAP_COMPILER)/ebin/erl_parse.beam \ $(BOOTSTRAP_COMPILER)/ebin/erl_lint.beam \ + $(BOOTSTRAP_COMPILER)/ebin/io.beam \ $(BOOTSTRAP_COMPILER)/ebin/otp_internal.beam $(BOOTSTRAP_COMPILER)/ebin/erl_parse.beam: erl_parse.yrl diff --git a/lib/stdlib/src/epp.erl b/lib/stdlib/src/epp.erl index 2c8d84a9e1..a0f7660ecf 100644 --- a/lib/stdlib/src/epp.erl +++ b/lib/stdlib/src/epp.erl @@ -23,13 +23,18 @@ -export([open/2,open/3,open/5,close/1,format_error/1]). -export([scan_erl_form/1,parse_erl_form/1,macro_defs/1]). -export([parse_file/1, parse_file/3]). +-export([default_encoding/0, encoding_to_string/1, + read_encoding/1, read_encoding/2, set_encoding/1]). -export([interpret_file_attribute/1]). -export([normalize_typed_record_fields/1,restore_typed_record_fields/1]). %%------------------------------------------------------------------------ +-export_type([source_encoding/0]). + -type macros() :: [{atom(), term()}]. -type epp_handle() :: pid(). +-type source_encoding() :: latin1 | utf8. %% Epp state record. -record(epp, {file, %Current file @@ -213,6 +218,173 @@ parse_file(Epp) -> [{eof,Location}] end. +-define(DEFAULT_ENCODING, latin1). + +-spec default_encoding() -> source_encoding(). + +default_encoding() -> + ?DEFAULT_ENCODING. + +-spec encoding_to_string(Encoding) -> string() when + Encoding :: source_encoding(). + +encoding_to_string(latin1) -> "coding: latin-1"; +encoding_to_string(utf8) -> "coding: utf-8". + +-spec read_encoding(FileName) -> source_encoding() | none when + FileName :: file:name(). + +read_encoding(Name) -> + read_encoding(Name, []). + +-spec read_encoding(FileName, Options) -> source_encoding() | none when + FileName :: file:name(), + Options :: [Option], + Option :: {in_comment_only, boolean()}. + +read_encoding(Name, Options) -> + InComment = proplists:get_value(in_comment_only, Options, true), + case file:open(Name, [read]) of + {ok,File} -> + try read_encoding_from_file(File, InComment) + after ok = file:close(File) + end; + _Error -> + none + end. + +-spec set_encoding(File) -> source_encoding() | none when + File :: io:device(). % pid(); raw files don't work + +set_encoding(File) -> + Encoding = read_encoding_from_file(File, true), + Enc = case Encoding of + none -> default_encoding(); + Encoding -> Encoding + end, + ok = io:setopts(File, [{encoding, Enc}]), + Encoding. + +-spec read_encoding_from_file(File, InComment) -> source_encoding() | none when + File :: io:device(), + InComment :: boolean(). + +-define(ENC_CHUNK, 32). +-define(N_ENC_CHUNK, 16). % a total of 512 bytes + +read_encoding_from_file(File, InComment) -> + {ok, Pos0} = file:position(File, cur), + Opts = io:getopts(File), + Encoding0 = lists:keyfind(encoding, 1, Opts), + Binary0 = lists:keyfind(binary, 1, Opts), + ok = io:setopts(File, [binary, {encoding, latin1}]), + try + {B, Fun} = (reader(File, 0))(), + com_nl(B, Fun, 0, InComment) + catch + throw:no -> + none + after + {ok, Pos0} = file:position(File, Pos0), + ok = io:setopts(File, [Binary0, Encoding0]) + end. + +reader(Fd, N) -> + fun() when N =:= ?N_ENC_CHUNK -> + throw(no); + () -> + case file:read(Fd, ?ENC_CHUNK) of + eof -> + {<<>>, reader(Fd, N+1)}; + {ok, Bin} -> + {Bin, reader(Fd, N+1)}; + {error, _} -> + throw(no) % ignore errors + end + end. + +com_nl(_, _, 2, _) -> + throw(no); +com_nl(B, Fun, N, false=Com) -> + com_c(B, Fun, N, Com); +com_nl(B, Fun, N, true=Com) -> + com(B, Fun, N, Com). + +com(<<"\n",B/binary>>, Fun, N, Com) -> + com_nl(B, Fun, N+1, Com); +com(<<"%", B/binary>>, Fun, N, Com) -> + com_c(B, Fun, N, Com); +com(<<_:1/unit:8,B/binary>>, Fun, N, Com) -> + com(B, Fun, N, Com); +com(<<>>, Fun, N, Com) -> + {B, Fun1} = Fun(), + com(B, Fun1, N, Com). + +com_c(<<"c",B/binary>>, Fun, N, Com) -> + com_oding(B, Fun, N, Com); +com_c(<<"\n",B/binary>>, Fun, N, Com) -> + com_nl(B, Fun, N+1, Com); +com_c(<<_:1/unit:8,B/binary>>, Fun, N, Com) -> + com_c(B, Fun, N, Com); +com_c(<<>>, Fun, N, Com) -> + {B, Fun1} = Fun(), + com_c(B, Fun1, N, Com). + +com_oding(<<"oding",B/binary>>, Fun, N, Com) -> + com_sep(B, Fun, N, Com); +com_oding(B, Fun, N, Com) when byte_size(B) >= length("oding") -> + com_c(B, Fun, N, Com); +com_oding(B, Fun, N, Com) -> + {B1, Fun1} = Fun(), + com_oding(list_to_binary([B, B1]), Fun1, N, Com). + +com_sep(<<":",B/binary>>, Fun, N, Com) -> + com_space(B, Fun, N, Com); +com_sep(<<"=",B/binary>>, Fun, N, Com) -> + com_space(B, Fun, N, Com); +com_sep(<<"\s",B/binary>>, Fun, N, Com) -> + com_sep(B, Fun, N, Com); +com_sep(<<>>, Fun, N, Com) -> + {B, Fun1} = Fun(), + com_sep(B, Fun1, N, Com); +com_sep(B, Fun, N, Com) -> + com_c(B, Fun, N, Com). + +com_space(<<"\s",B/binary>>, Fun, N, Com) -> + com_space(B, Fun, N, Com); +com_space(<<>>, Fun, N, Com) -> + {B, Fun1} = Fun(), + com_space(B, Fun1, N, Com); +com_space(B, Fun, N, _Com) -> + com_enc(B, Fun, N, [], []). + +com_enc(<<C:1/unit:8,B/binary>>, Fun, N, L, Ps) when C >= $a, C =< $z; + C >= $A, C =< $Z; + C >= $0, C =< $9 -> + com_enc(B, Fun, N, [C | L], Ps); +com_enc(<<>>, Fun, N, L, Ps) -> + case Fun() of + {<<>>, _} -> + com_enc_end([L | Ps]); + {B, Fun1} -> + com_enc(B, Fun1, N, L, Ps) + end; +com_enc(<<"-",B/binary>>, Fun, N, L, Ps) -> + com_enc(B, Fun, N, [], [L | Ps]); +com_enc(_B, _Fun, _N, L, Ps) -> + com_enc_end([L | Ps]). + +com_enc_end(Ps0) -> + Ps = lists:reverse([lists:reverse(string:to_lower(P)) || P <- Ps0]), + com_encoding(Ps). + +com_encoding(["latin","1"|_]) -> + latin1; +com_encoding(["utf","8"|_]) -> + utf8; +com_encoding(_) -> + throw(no). % Don't try any further + normalize_typed_record_fields([]) -> {typed, []}; normalize_typed_record_fields(Fields) -> @@ -266,14 +438,17 @@ init_server(Pid, Name, File, AtLocation, Path, Pdm, Pre) -> Ms0 = predef_macros(Name), case user_predef(Pdm, Ms0) of {ok,Ms1} -> - epp_reply(Pid, {ok,self()}), - %% ensure directory of current source file is first in path + _ = set_encoding(File), + epp_reply(Pid, {ok,self()}), + %% ensure directory of current source file is + %% first in path Path1 = [filename:dirname(Name) | Path], - St = #epp{file=File, location=AtLocation, delta=0, name=Name, - name2=Name, path=Path1, macs=Ms1, pre_opened = Pre}, - From = wait_request(St), - enter_file_reply(From, Name, AtLocation, AtLocation), - wait_req_scan(St); + St = #epp{file=File, location=AtLocation, delta=0, + name=Name, name2=Name, path=Path1, macs=Ms1, + pre_opened = Pre}, + From = wait_request(St), + enter_file_reply(From, Name, AtLocation, AtLocation), + wait_req_scan(St); {error,E} -> epp_reply(Pid, {error,E}) end. @@ -385,19 +560,20 @@ enter_file(NewName, Inc, From, St) -> %% enter_file2(File, FullName, From, EppState, AtLocation) -> EppState. %% Set epp to use this file and "enter" it. -enter_file2(NewF, Pname, From, St, AtLocation) -> +enter_file2(NewF, Pname, From, St0, AtLocation) -> Loc = start_loc(AtLocation), enter_file_reply(From, Pname, Loc, AtLocation), - Ms = dict:store({atom,'FILE'}, {none,[{string,Loc,Pname}]}, St#epp.macs), + Ms = dict:store({atom,'FILE'}, {none,[{string,Loc,Pname}]}, St0#epp.macs), %% update the head of the include path to be the directory of the new %% source file, so that an included file can always include other files %% relative to its current location (this is also how C does it); note %% that the directory of the parent source file (the previous head of %% the path) must be dropped, otherwise the path used within the current %% file will depend on the order of file inclusions in the parent files - Path = [filename:dirname(Pname) | tl(St#epp.path)], + Path = [filename:dirname(Pname) | tl(St0#epp.path)], + _ = set_encoding(NewF), #epp{file=NewF,location=Loc,name=Pname,delta=0, - sstk=[St|St#epp.sstk],path=Path,macs=Ms}. + sstk=[St0|St0#epp.sstk],path=Path,macs=Ms}. enter_file_reply(From, Name, Location, AtLocation) -> Attr = loc_attr(AtLocation), @@ -456,7 +632,7 @@ leave_file(From, St) -> %% scan_toks(Tokens, From, EppState) scan_toks(From, St) -> - case io:scan_erl_form(St#epp.file, '', St#epp.location) of + case io:scan_erl_form(St#epp.file, '', St#epp.location, [unicode]) of {ok,Toks,Cl} -> scan_toks(Toks, From, St#epp{location=Cl}); {error,E,Cl} -> @@ -830,7 +1006,7 @@ new_location(Ln, {Le,_}, {Lf,_}) -> %% nested conditionals and repeated 'else's. skip_toks(From, St, [I|Sis]) -> - case io:scan_erl_form(St#epp.file, '', St#epp.location) of + case io:scan_erl_form(St#epp.file, '', St#epp.location, [unicode]) of {ok,[{'-',_Lh},{atom,_Li,ifdef}|_Toks],Cl} -> skip_toks(From, St#epp{location=Cl}, [ifdef,I|Sis]); {ok,[{'-',_Lh},{atom,_Li,ifndef}|_Toks],Cl} -> @@ -1094,6 +1270,7 @@ expand_arg([], Ts, L, Rest, Bs) -> %%% tokenized would yield the token list Ts. %% erl_scan:token_info(T, text) is not backward compatible with this. +%% Note that escaped characters will be replaced by themselves. token_src({dot, _}) -> "."; token_src({X, _}) when is_atom(X) -> @@ -1101,16 +1278,16 @@ token_src({X, _}) when is_atom(X) -> token_src({var, _, X}) -> atom_to_list(X); token_src({char,_,C}) -> - io_lib:write_char(C); + io_lib:write_unicode_char(C); token_src({string, _, X}) -> - lists:flatten(io_lib:format("~p", [X])); + io_lib:write_unicode_string(X); token_src({_, _, X}) -> - lists:flatten(io_lib:format("~w", [X])). + io_lib:format("~w", [X]). stringify1([]) -> []; stringify1([T | Tokens]) -> - [io_lib:format(" ~s", [token_src(T)]) | stringify1(Tokens)]. + [io_lib:format(" ~ts", [token_src(T)]) | stringify1(Tokens)]. stringify(Ts, L) -> [$\s | S] = lists:flatten(stringify1(Ts)), diff --git a/lib/stdlib/src/erl_lint.erl b/lib/stdlib/src/erl_lint.erl index 1e5f962375..0a442d950f 100644 --- a/lib/stdlib/src/erl_lint.erl +++ b/lib/stdlib/src/erl_lint.erl @@ -3618,6 +3618,10 @@ extract_sequence(4, [$t, $c | Fmt], Need) -> extract_sequence(5, [$c|Fmt], Need); extract_sequence(4, [$t, $s | Fmt], Need) -> extract_sequence(5, [$s|Fmt], Need); +extract_sequence(4, [$t, $p | Fmt], Need) -> + extract_sequence(5, [$p|Fmt], Need); +extract_sequence(4, [$t, $P | Fmt], Need) -> + extract_sequence(5, [$P|Fmt], Need); extract_sequence(4, [$t, C | _Fmt], _Need) -> {error,"invalid control ~t" ++ [C]}; extract_sequence(4, Fmt, Need) -> diff --git a/lib/stdlib/src/erl_parse.yrl b/lib/stdlib/src/erl_parse.yrl index 928c10f7f2..27a2ba80eb 100644 --- a/lib/stdlib/src/erl_parse.yrl +++ b/lib/stdlib/src/erl_parse.yrl @@ -2,7 +2,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -923,73 +923,77 @@ normalise_list([]) -> -spec abstract(Data) -> AbsTerm when Data :: term(), AbsTerm :: abstract_expr(). -abstract(T) when is_integer(T) -> {integer,0,T}; -abstract(T) when is_float(T) -> {float,0,T}; -abstract(T) when is_atom(T) -> {atom,0,T}; -abstract([]) -> {nil,0}; -abstract(B) when is_bitstring(B) -> - {bin, 0, [abstract_byte(Byte, 0) || Byte <- bitstring_to_list(B)]}; -abstract([C|T]) when is_integer(C), 0 =< C, C < 256 -> - abstract_string(T, [C]); -abstract([H|T]) -> - {cons,0,abstract(H),abstract(T)}; -abstract(Tuple) when is_tuple(Tuple) -> - {tuple,0,abstract_list(tuple_to_list(Tuple))}. - -abstract_string([C|T], String) when is_integer(C), 0 =< C, C < 256 -> - abstract_string(T, [C|String]); -abstract_string([], String) -> - {string, 0, lists:reverse(String)}; -abstract_string(T, String) -> - not_string(String, abstract(T)). - -not_string([C|T], Result) -> - not_string(T, {cons, 0, {integer, 0, C}, Result}); -not_string([], Result) -> +abstract(T) -> + abstract(T, 0, epp:default_encoding()). + +%%% abstract/2 takes line and encoding options +-spec abstract(Data, Options) -> AbsTerm when + Data :: term(), + Options :: Line | [Option], + Option :: {line, Line} | {encoding, Encoding}, + Encoding :: latin1 | unicode | utf8, + Line :: erl_scan:line(), + AbsTerm :: abstract_expr(). + +abstract(T, Line) when is_integer(Line) -> + abstract(T, Line, epp:default_encoding()); +abstract(T, Options) when is_list(Options) -> + Line = proplists:get_value(line, Options, 0), + Encoding = proplists:get_value(encoding, Options,epp:default_encoding()), + abstract(T, Line, Encoding). + +-define(UNICODE(C), + (C >= 0 andalso C < 16#D800 orelse + C > 16#DFFF andalso C < 16#FFFE orelse + C > 16#FFFF andalso C =< 16#10FFFF)). + +abstract(T, L, _E) when is_integer(T) -> {integer,L,T}; +abstract(T, L, _E) when is_float(T) -> {float,L,T}; +abstract(T, L, _E) when is_atom(T) -> {atom,L,T}; +abstract([], L, _E) -> {nil,L}; +abstract(B, L, _E) when is_bitstring(B) -> + {bin, L, [abstract_byte(Byte, L) || Byte <- bitstring_to_list(B)]}; +abstract([C|T], L, unicode=E) when ?UNICODE(C) -> + abstract_unicode_string(T, [C], L, E); +abstract([C|T], L, utf8=E) when ?UNICODE(C) -> + abstract_unicode_string(T, [C], L, E); +abstract([C|T], L, latin1=E) when is_integer(C), 0 =< C, C < 256 -> + abstract_string(T, [C], L, E); +abstract([H|T], L, E) -> + {cons,L,abstract(H, L, E),abstract(T, L, E)}; +abstract(Tuple, L, E) when is_tuple(Tuple) -> + {tuple,L,abstract_list(tuple_to_list(Tuple), L, E)}. + +abstract_string([C|T], String, L, E) when is_integer(C), 0 =< C, C < 256 -> + abstract_string(T, [C|String], L, E); +abstract_string([], String, L, _E) -> + {string, L, lists:reverse(String)}; +abstract_string(T, String, L, E) -> + not_string(String, abstract(T, L, E), L, E). + +abstract_unicode_string([C|T], String, L, E) when ?UNICODE(C) -> + abstract_unicode_string(T, [C|String], L, E); +abstract_unicode_string([], String, L, _E) -> + {string, L, lists:reverse(String)}; +abstract_unicode_string(T, String, L, E) -> + not_string(String, abstract(T, L, E), L, E). + +not_string([C|T], Result, L, E) -> + not_string(T, {cons, L, {integer, L, C}, Result}, L, E); +not_string([], Result, _L, _E) -> Result. -abstract_list([H|T]) -> - [abstract(H)|abstract_list(T)]; -abstract_list([]) -> +abstract_list([H|T], L, E) -> + [abstract(H, L, E)|abstract_list(T, L, E)]; +abstract_list([], _L, _E) -> []. -abstract_byte(Byte, Line) when is_integer(Byte) -> - {bin_element, Line, {integer, Line, Byte}, default, default}; -abstract_byte(Bits, Line) -> +abstract_byte(Byte, L) when is_integer(Byte) -> + {bin_element, L, {integer, L, Byte}, default, default}; +abstract_byte(Bits, L) -> Sz = bit_size(Bits), <<Val:Sz>> = Bits, - {bin_element, Line, {integer, Line, Val}, {integer, Line, Sz}, default}. - -%%% abstract/2 keeps the line number -abstract(T, Line) when is_integer(T) -> {integer,Line,T}; -abstract(T, Line) when is_float(T) -> {float,Line,T}; -abstract(T, Line) when is_atom(T) -> {atom,Line,T}; -abstract([], Line) -> {nil,Line}; -abstract(B, Line) when is_bitstring(B) -> - {bin, Line, [abstract_byte(Byte, Line) || Byte <- bitstring_to_list(B)]}; -abstract([C|T], Line) when is_integer(C), 0 =< C, C < 256 -> - abstract_string(T, [C], Line); -abstract([H|T], Line) -> - {cons,Line,abstract(H, Line),abstract(T, Line)}; -abstract(Tuple, Line) when is_tuple(Tuple) -> - {tuple,Line,abstract_list(tuple_to_list(Tuple), Line)}. - -abstract_string([C|T], String, Line) when is_integer(C), 0 =< C, C < 256 -> - abstract_string(T, [C|String], Line); -abstract_string([], String, Line) -> - {string, Line, lists:reverse(String)}; -abstract_string(T, String, Line) -> - not_string(String, abstract(T, Line), Line). - -not_string([C|T], Result, Line) -> - not_string(T, {cons, Line, {integer, Line, C}, Result}, Line); -not_string([], Result, _Line) -> - Result. - -abstract_list([H|T], Line) -> - [abstract(H, Line)|abstract_list(T, Line)]; -abstract_list([], _Line) -> - []. + {bin_element, L, {integer, L, Val}, {integer, L, Sz}, default}. %% Generate a list of tokens representing the abstract term. diff --git a/lib/stdlib/src/erl_pp.erl b/lib/stdlib/src/erl_pp.erl index 6b5aa951cf..0383ce6839 100644 --- a/lib/stdlib/src/erl_pp.erl +++ b/lib/stdlib/src/erl_pp.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -26,7 +26,7 @@ guard/1,guard/2,exprs/1,exprs/2,exprs/3,expr/1,expr/2,expr/3,expr/4]). -import(lists, [append/1,foldr/3,mapfoldl/3,reverse/1,reverse/2]). --import(io_lib, [write/1,format/2,write_char/1,write_string/1]). +-import(io_lib, [write/1,format/2]). -import(erl_parse, [inop_prec/1,preop_prec/1,func_prec/0,max_prec/0]). -define(MAXLINE, 72). @@ -36,7 +36,15 @@ CurrentIndentation :: integer(), CurrentPrecedence :: non_neg_integer(), HookFunction :: hook_function()) -> - io_lib:chars())). + io_lib:chars())). + +-type(option() :: {hook, hook_function()} + | {encoding, latin1 | unicode | utf8}). +-type(options() :: hook_function() | [option()]). + +-record(pp, {string_fun, char_fun}). + +-record(options, {hook, encoding, opts}). %%% %%% Exported functions @@ -48,12 +56,12 @@ form(Thing) -> form(Thing, none). --spec(form(Form, HookFunction) -> io_lib:chars() when +-spec(form(Form, Options) -> io_lib:chars() when Form :: erl_parse:abstract_form(), - HookFunction :: hook_function()). + Options :: options()). -form(Thing, Hook) -> - frmt(lform(Thing, Hook)). +form(Thing, Options) -> + frmt(lform(Thing, options(Options)), state(Options)). -spec(attribute(Attribute) -> io_lib:chars() when Attribute :: erl_parse:abstract_form()). @@ -61,12 +69,12 @@ form(Thing, Hook) -> attribute(Thing) -> attribute(Thing, none). --spec(attribute(Attribute, HookFunction) -> io_lib:chars() when +-spec(attribute(Attribute, Options) -> io_lib:chars() when Attribute :: erl_parse:abstract_form(), - HookFunction :: hook_function()). + Options :: options()). -attribute(Thing, Hook) -> - frmt(lattribute(Thing, Hook)). +attribute(Thing, Options) -> + frmt(lattribute(Thing, options(Options)), state(Options)). -spec(function(Function) -> io_lib:chars() when Function :: erl_parse:abstract_form()). @@ -74,18 +82,18 @@ attribute(Thing, Hook) -> function(F) -> function(F, none). --spec(function(Function, HookFunction) -> io_lib:chars() when +-spec(function(Function, Options) -> io_lib:chars() when Function :: erl_parse:abstract_form(), - HookFunction :: hook_function()). + Options :: options()). -function(F, Hook) -> - frmt(lfunction(F, Hook)). +function(F, Options) -> + frmt(lfunction(F, options(Options)), state(Options)). rule(R) -> rule(R, none). -rule(R, Hook) -> - frmt(lrule(R, Hook)). +rule(R, Options) -> + frmt(lrule(R, options(Options)), state(Options)). -spec(guard(Guard) -> io_lib:chars() when Guard :: [erl_parse:abstract_expr()]). @@ -93,12 +101,12 @@ rule(R, Hook) -> guard(Gs) -> guard(Gs, none). --spec(guard(Guard, HookFunction) -> io_lib:chars() when +-spec(guard(Guard, Options) -> io_lib:chars() when Guard :: [erl_parse:abstract_expr()], - HookFunction :: hook_function()). + Options :: options()). -guard(Gs, Hook) -> - frmt(lguard(Gs, Hook)). +guard(Gs, Options) -> + frmt(lguard(Gs, options(Options)), state(Options)). -spec(exprs(Expressions) -> io_lib:chars() when Expressions :: [erl_parse:abstract_expr()]). @@ -106,99 +114,129 @@ guard(Gs, Hook) -> exprs(Es) -> exprs(Es, 0, none). --spec(exprs(Expressions, HookFunction) -> io_lib:chars() when +-spec(exprs(Expressions, Options) -> io_lib:chars() when Expressions :: [erl_parse:abstract_expr()], - HookFunction :: hook_function()). + Options :: options()). -exprs(Es, Hook) -> - exprs(Es, 0, Hook). +exprs(Es, Options) -> + exprs(Es, 0, Options). --spec(exprs(Expressions, Indent, HookFunction) -> io_lib:chars() when +-spec(exprs(Expressions, Indent, Options) -> io_lib:chars() when Expressions :: [erl_parse:abstract_expr()], Indent :: integer(), - HookFunction :: hook_function()). + Options :: options()). -exprs(Es, I, Hook) -> - frmt({seq,[],[],[$,],lexprs(Es, Hook)}, I). +exprs(Es, I, Options) -> + frmt({seq,[],[],[$,],lexprs(Es, options(Options))}, I, state(Options)). -spec(expr(Expression) -> io_lib:chars() when Expression :: erl_parse:abstract_expr()). expr(E) -> - frmt(lexpr(E, 0, none)). + frmt(lexpr(E, 0, options(none)), state(none)). --spec(expr(Expression, HookFunction) -> io_lib:chars() when +-spec(expr(Expression, Options) -> io_lib:chars() when Expression :: erl_parse:abstract_expr(), - HookFunction :: hook_function()). + Options :: options()). -expr(E, Hook) -> - frmt(lexpr(E, 0, Hook)). +expr(E, Options) -> + frmt(lexpr(E, 0, options(Options)), state(Options)). --spec(expr(Expression, Indent, HookFunction) -> io_lib:chars() when +-spec(expr(Expression, Indent, Options) -> io_lib:chars() when Expression :: erl_parse:abstract_expr(), Indent :: integer(), - HookFunction :: hook_function()). + Options :: options()). -expr(E, I, Hook) -> - frmt(lexpr(E, 0, Hook), I). +expr(E, I, Options) -> + frmt(lexpr(E, 0, options(Options)), I, state(Options)). --spec(expr(Expression, Indent, Precedence, HookFunction) -> io_lib:chars() when +-spec(expr(Expression, Indent, Precedence, Options) -> io_lib:chars() when Expression :: erl_parse:abstract_expr(), Indent :: integer(), Precedence :: non_neg_integer(), - HookFunction :: hook_function()). + Options :: options()). -expr(E, I, P, Hook) -> - frmt(lexpr(E, P, Hook), I). +expr(E, I, P, Options) -> + frmt(lexpr(E, P, options(Options)), I, state(Options)). %%% %%% Local functions %%% -lform({attribute,Line,Name,Arg}, Hook) -> - lattribute({attribute,Line,Name,Arg}, Hook); -lform({function,Line,Name,Arity,Clauses}, Hook) -> - lfunction({function,Line,Name,Arity,Clauses}, Hook); -lform({rule,Line,Name,Arity,Clauses}, Hook) -> - lrule({rule,Line,Name,Arity,Clauses}, Hook); +options(Options) when is_list(Options) -> + Hook = proplists:get_value(hook, Options, none), + Encoding = encoding(Options), + #options{hook = Hook, encoding = Encoding, opts = Options}; +options(Hook) -> + #options{hook = Hook, encoding = encoding([]), opts = Hook}. + +state(Options) when is_list(Options) -> + case encoding(Options) of + latin1 -> state(); + unicode -> unicode_state() + end; +state(_Hook) -> + state(). + +state() -> + #pp{string_fun = fun io_lib:write_unicode_string_as_latin1/1, + char_fun = fun io_lib:write_unicode_char_as_latin1/1}. + +unicode_state() -> + #pp{string_fun = fun io_lib:write_unicode_string/1, + char_fun = fun io_lib:write_unicode_char/1}. + +encoding(Options) -> + case proplists:get_value(encoding, Options, epp:default_encoding()) of + latin1 -> latin1; + utf8 -> unicode; + unicode -> unicode + end. + +lform({attribute,Line,Name,Arg}, Opts) -> + lattribute({attribute,Line,Name,Arg}, Opts); +lform({function,Line,Name,Arity,Clauses}, Opts) -> + lfunction({function,Line,Name,Arity,Clauses}, Opts); +lform({rule,Line,Name,Arity,Clauses}, Opts) -> + lrule({rule,Line,Name,Arity,Clauses}, Opts); %% These are specials to make it easier for the compiler. -lform({error,E}, _Hook) -> +lform({error,E}, _Opts) -> leaf(format("~p\n", [{error,E}])); -lform({warning,W}, _Hook) -> +lform({warning,W}, _Opts) -> leaf(format("~p\n", [{warning,W}])); -lform({eof,_Line}, _Hook) -> +lform({eof,_Line}, _Opts) -> $\n. -lattribute({attribute,_Line,type,Type}, Hook) -> - [typeattr(type, Type, Hook),leaf(".\n")]; -lattribute({attribute,_Line,opaque,Type}, Hook) -> - [typeattr(opaque, Type, Hook),leaf(".\n")]; -lattribute({attribute,_Line,spec,Arg}, _Hook) -> +lattribute({attribute,_Line,type,Type}, Opts) -> + [typeattr(type, Type, Opts),leaf(".\n")]; +lattribute({attribute,_Line,opaque,Type}, Opts) -> + [typeattr(opaque, Type, Opts),leaf(".\n")]; +lattribute({attribute,_Line,spec,Arg}, _Opts) -> [specattr(Arg),leaf(".\n")]; -lattribute({attribute,_Line,Name,Arg}, Hook) -> - [lattribute(Name, Arg, Hook),leaf(".\n")]. +lattribute({attribute,_Line,Name,Arg}, Opts) -> + [lattribute(Name, Arg, Opts),leaf(".\n")]. -lattribute(module, {M,Vs}, _Hook) -> +lattribute(module, {M,Vs}, _Opts) -> attr("module",[{var,0,pname(M)}, foldr(fun(V, C) -> {cons,0,{var,0,V},C} end, {nil,0}, Vs)]); -lattribute(module, M, _Hook) -> +lattribute(module, M, _Opts) -> attr("module", [{var,0,pname(M)}]); -lattribute(export, Falist, _Hook) -> +lattribute(export, Falist, _Opts) -> call({var,0,"-export"}, [falist(Falist)], 0, none); -lattribute(import, Name, _Hook) when is_list(Name) -> +lattribute(import, Name, _Opts) when is_list(Name) -> attr("import", [{var,0,pname(Name)}]); -lattribute(import, {From,Falist}, _Hook) -> +lattribute(import, {From,Falist}, _Opts) -> attr("import",[{var,0,pname(From)},falist(Falist)]); -lattribute(file, {Name,Line}, _Hook) -> +lattribute(file, {Name,Line}, _Opts) -> attr("file", [{var,0,format("~p", [Name])},{integer,0,Line}]); -lattribute(record, {Name,Is}, Hook) -> +lattribute(record, {Name,Is}, Opts) -> Nl = leaf(format("-record(~w,", [Name])), - [{first,Nl,record_fields(Is, Hook)},$)]; -lattribute(Name, Arg, _Hook) -> - attr(write(Name), [erl_parse:abstract(Arg)]). + [{first,Nl,record_fields(Is, Opts)},$)]; +lattribute(Name, Arg, #options{encoding = Encoding}) -> + attr(write(Name), [erl_parse:abstract(Arg, [{encoding,Encoding}])]). -typeattr(Tag, {TypeName,Type,Args}, _Hook) -> +typeattr(Tag, {TypeName,Type,Args}, _Opts) -> {first,leaf("-"++atom_to_list(Tag)++" "), typed(call({atom,0,TypeName}, Args, 0, none), Type)}. @@ -293,7 +331,7 @@ guard_type(Before, Gs) -> Gl = {list,[{step,'when',expr_list(Gs, [$,], fun constraint/2, none)}]}, {list,[{step,Before,Gl}]}. -constraint({type,_Line,constraint,[Tag,As]}, _Hook) -> +constraint({type,_Line,constraint,[Tag,As]}, _Opts) -> simple_type(Tag, As). fun_type(Before, {type,_,'fun',[FType,Ret]}) -> @@ -333,231 +371,232 @@ falist([]) -> falist([{Name,Arity}|Falist]) -> {cons,0,{var,0,format("~w/~w", [Name,Arity])},falist(Falist)}. -lfunction({function,_Line,Name,_Arity,Cs}, Hook) -> - Cll = nl_clauses(fun (C, H) -> func_clause(Name, C, H) end, $;, Hook, Cs), +lfunction({function,_Line,Name,_Arity,Cs}, Opts) -> + Cll = nl_clauses(fun (C, H) -> func_clause(Name, C, H) end, $;, Opts, Cs), [Cll,leaf(".\n")]. -func_clause(Name, {clause,Line,Head,Guard,Body}, Hook) -> - Hl = call({atom,Line,Name}, Head, 0, Hook), - Gl = guard_when(Hl, Guard, Hook), - Bl = body(Body, Hook), +func_clause(Name, {clause,Line,Head,Guard,Body}, Opts) -> + Hl = call({atom,Line,Name}, Head, 0, Opts), + Gl = guard_when(Hl, Guard, Opts), + Bl = body(Body, Opts), {step,Gl,Bl}. -lrule({rule,_Line,Name,_Arity,Cs}, Hook) -> - Cll = nl_clauses(fun (C, H) -> rule_clause(Name, C, H) end, $;, Hook, Cs), +lrule({rule,_Line,Name,_Arity,Cs}, Opts) -> + Cll = nl_clauses(fun (C, H) -> rule_clause(Name, C, H) end, $;, Opts, Cs), [Cll,leaf(".\n")]. -rule_clause(Name, {clause,Line,Head,Guard,Body}, Hook) -> - Hl = call({atom,Line,Name}, Head, 0, Hook), - Gl = guard_when(Hl, Guard, Hook, leaf(" :-")), - Bl = rule_body(Body, Hook), +rule_clause(Name, {clause,Line,Head,Guard,Body}, Opts) -> + Hl = call({atom,Line,Name}, Head, 0, Opts), + Gl = guard_when(Hl, Guard, Opts, leaf(" :-")), + Bl = rule_body(Body, Opts), {step,Gl,Bl}. -rule_body(Es, Hook) -> - lc_quals(Es, Hook). +rule_body(Es, Opts) -> + lc_quals(Es, Opts). -guard_when(Before, Guard, Hook) -> - guard_when(Before, Guard, Hook, ' ->'). +guard_when(Before, Guard, Opts) -> + guard_when(Before, Guard, Opts, ' ->'). -guard_when(Before, Guard, Hook, After) -> - Gl = lguard(Guard, Hook), +guard_when(Before, Guard, Opts, After) -> + Gl = lguard(Guard, Opts), [{list,[{step,Before,Gl}]},After]. -lguard([E|Es], Hook) when is_list(E) -> - {list,[{step,'when',expr_list([E|Es], [$;], fun guard0/2, Hook)}]}; -lguard([E|Es], Hook) -> % before R6 - lguard([[E|Es]], Hook); +lguard([E|Es], Opts) when is_list(E) -> + {list,[{step,'when',expr_list([E|Es], [$;], fun guard0/2, Opts)}]}; +lguard([E|Es], Opts) -> % before R6 + lguard([[E|Es]], Opts); lguard([], _) -> []. -guard0(Es, Hook) -> - expr_list(Es, [$,], fun lexpr/2, Hook). +guard0(Es, Opts) -> + expr_list(Es, [$,], fun lexpr/2, Opts). -%% body(Before, Es, Hook) -> [Char]. +%% body(Before, Es, Opts) -> [Char]. -body([E], Hook) -> - lexpr(E, Hook); -body(Es, Hook) -> - {prefer_nl,[$,],lexprs(Es, Hook)}. +body([E], Opts) -> + lexpr(E, Opts); +body(Es, Opts) -> + {prefer_nl,[$,],lexprs(Es, Opts)}. -lexpr(E, Hook) -> - lexpr(E, 0, Hook). +lexpr(E, Opts) -> + lexpr(E, 0, Opts). lexpr({var,_,V}, _, _) when is_integer(V) -> %Special hack for Robert leaf(format("_~w", [V])); lexpr({var,_,V}, _, _) -> leaf(format("~s", [V])); -lexpr({char,_,C}, _, _) -> leaf(write_char(C)); +lexpr({char,_,C}, _, _) -> {char,C}; lexpr({integer,_,N}, _, _) -> leaf(write(N)); lexpr({float,_,F}, _, _) -> leaf(write(F)); lexpr({atom,_,A}, _, _) -> leaf(write(A)); lexpr({string,_,S}, _, _) -> {string,S}; lexpr({nil,_}, _, _) -> '[]'; -lexpr({cons,_,H,T}, _, Hook) -> - list(T, [H], Hook); -lexpr({lc,_,E,Qs}, _Prec, Hook) -> - Lcl = {list,[{step,[lexpr(E, Hook),leaf(" ||")],lc_quals(Qs, Hook)}]}, +lexpr({cons,_,H,T}, _, Opts) -> + list(T, [H], Opts); +lexpr({lc,_,E,Qs}, _Prec, Opts) -> + Lcl = {list,[{step,[lexpr(E, Opts),leaf(" ||")],lc_quals(Qs, Opts)}]}, {list,[{seq,$[,[],[[]],[{force_nl,leaf(" "),[Lcl]}]},$]]}; %% {list,[{step,$[,Lcl},$]]}; -lexpr({bc,_,E,Qs}, _Prec, Hook) -> - Lcl = {list,[{step,[lexpr(E, Hook),leaf(" ||")],lc_quals(Qs, Hook)}]}, +lexpr({bc,_,E,Qs}, _Prec, Opts) -> + Lcl = {list,[{step,[lexpr(E, Opts),leaf(" ||")],lc_quals(Qs, Opts)}]}, {list,[{seq,'<<',[],[[]],[{force_nl,leaf(" "),[Lcl]}]},'>>']}; %% {list,[{step,'<<',Lcl},'>>']}; -lexpr({tuple,_,Elts}, _, Hook) -> - tuple(Elts, Hook); -%%lexpr({struct,_,Tag,Elts}, _, Hook) -> -%% {first,format("~w", [Tag]),tuple(Elts, Hook)}; -lexpr({record_index, _, Name, F}, Prec, Hook) -> +lexpr({tuple,_,Elts}, _, Opts) -> + tuple(Elts, Opts); +%%lexpr({struct,_,Tag,Elts}, _, Opts) -> +%% {first,format("~w", [Tag]),tuple(Elts, Opts)}; +lexpr({record_index, _, Name, F}, Prec, Opts) -> {P,R} = preop_prec('#'), Nl = record_name(Name), - El = [Nl,$.,lexpr(F, R, Hook)], + El = [Nl,$.,lexpr(F, R, Opts)], maybe_paren(P, Prec, El); -lexpr({record, _, Name, Fs}, Prec, Hook) -> +lexpr({record, _, Name, Fs}, Prec, Opts) -> {P,_R} = preop_prec('#'), Nl = record_name(Name), - El = {first,Nl,record_fields(Fs, Hook)}, + El = {first,Nl,record_fields(Fs, Opts)}, maybe_paren(P, Prec, El); -lexpr({record_field, _, Rec, Name, F}, Prec, Hook) -> +lexpr({record_field, _, Rec, Name, F}, Prec, Opts) -> {L,P,R} = inop_prec('#'), - Rl = lexpr(Rec, L, Hook), + Rl = lexpr(Rec, L, Opts), Nl = leaf(format("#~w.", [Name])), - El = [Rl,Nl,lexpr(F, R, Hook)], + El = [Rl,Nl,lexpr(F, R, Opts)], maybe_paren(P, Prec, El); -lexpr({record, _, Rec, Name, Fs}, Prec, Hook) -> +lexpr({record, _, Rec, Name, Fs}, Prec, Opts) -> {L,P,_R} = inop_prec('#'), - Rl = lexpr(Rec, L, Hook), + Rl = lexpr(Rec, L, Opts), Nl = record_name(Name), - El = {first,[Rl,Nl],record_fields(Fs, Hook)}, + El = {first,[Rl,Nl],record_fields(Fs, Opts)}, maybe_paren(P, Prec, El); -lexpr({record_field, _, {atom,_,''}, F}, Prec, Hook) -> +lexpr({record_field, _, {atom,_,''}, F}, Prec, Opts) -> {_L,P,R} = inop_prec('.'), - El = [$.,lexpr(F, R, Hook)], + El = [$.,lexpr(F, R, Opts)], maybe_paren(P, Prec, El); -lexpr({record_field, _, Rec, F}, Prec, Hook) -> +lexpr({record_field, _, Rec, F}, Prec, Opts) -> {L,P,R} = inop_prec('.'), - El = [lexpr(Rec, L, Hook),$.,lexpr(F, R, Hook)], + El = [lexpr(Rec, L, Opts),$.,lexpr(F, R, Opts)], maybe_paren(P, Prec, El); -lexpr({block,_,Es}, _, Hook) -> - {list,[{step,'begin',body(Es, Hook)},'end']}; -lexpr({'if',_,Cs}, _, Hook) -> - {list,[{step,'if',if_clauses(Cs, Hook)},'end']}; -lexpr({'case',_,Expr,Cs}, _, Hook) -> - {list,[{step,{list,[{step,'case',lexpr(Expr, Hook)},'of']}, - cr_clauses(Cs, Hook)}, +lexpr({block,_,Es}, _, Opts) -> + {list,[{step,'begin',body(Es, Opts)},'end']}; +lexpr({'if',_,Cs}, _, Opts) -> + {list,[{step,'if',if_clauses(Cs, Opts)},'end']}; +lexpr({'case',_,Expr,Cs}, _, Opts) -> + {list,[{step,{list,[{step,'case',lexpr(Expr, Opts)},'of']}, + cr_clauses(Cs, Opts)}, 'end']}; -lexpr({'cond',_,Cs}, _, Hook) -> - {list,[{step,leaf("cond"),cond_clauses(Cs, Hook)},'end']}; -lexpr({'receive',_,Cs}, _, Hook) -> - {list,[{step,'receive',cr_clauses(Cs, Hook)},'end']}; -lexpr({'receive',_,Cs,To,ToOpt}, _, Hook) -> - Al = {list,[{step,[lexpr(To, Hook),' ->'],body(ToOpt, Hook)}]}, - {list,[{step,'receive',cr_clauses(Cs, Hook)}, +lexpr({'cond',_,Cs}, _, Opts) -> + {list,[{step,leaf("cond"),cond_clauses(Cs, Opts)},'end']}; +lexpr({'receive',_,Cs}, _, Opts) -> + {list,[{step,'receive',cr_clauses(Cs, Opts)},'end']}; +lexpr({'receive',_,Cs,To,ToOpt}, _, Opts) -> + Al = {list,[{step,[lexpr(To, Opts),' ->'],body(ToOpt, Opts)}]}, + {list,[{step,'receive',cr_clauses(Cs, Opts)}, {step,'after',Al}, 'end']}; -lexpr({'fun',_,{function,F,A}}, _Prec, _Hook) -> +lexpr({'fun',_,{function,F,A}}, _Prec, _Opts) -> leaf(format("fun ~w/~w", [F,A])); -lexpr({'fun',_,{function,F,A},Extra}, _Prec, _Hook) -> +lexpr({'fun',_,{function,F,A},Extra}, _Prec, _Opts) -> {force_nl,fun_info(Extra),leaf(format("fun ~w/~w", [F,A]))}; -lexpr({'fun',_,{function,M,F,A}}, _Prec, _Hook) +lexpr({'fun',_,{function,M,F,A}}, _Prec, _Opts) when is_atom(M), is_atom(F), is_integer(A) -> %% For backward compatibility with pre-R15 abstract format. leaf(format("fun ~w:~w/~w", [M,F,A])); -lexpr({'fun',_,{function,M,F,A}}, _Prec, Hook) -> +lexpr({'fun',_,{function,M,F,A}}, _Prec, Opts) -> %% New format in R15. - NameItem = lexpr(M, Hook), - CallItem = lexpr(F, Hook), - ArityItem = lexpr(A, Hook), + NameItem = lexpr(M, Opts), + CallItem = lexpr(F, Opts), + ArityItem = lexpr(A, Opts), ["fun ",NameItem,$:,CallItem,$/,ArityItem]; -lexpr({'fun',_,{clauses,Cs}}, _Prec, Hook) -> - {list,[{first,'fun',fun_clauses(Cs, Hook)},'end']}; -lexpr({'fun',_,{clauses,Cs},Extra}, _Prec, Hook) -> +lexpr({'fun',_,{clauses,Cs}}, _Prec, Opts) -> + {list,[{first,'fun',fun_clauses(Cs, Opts)},'end']}; +lexpr({'fun',_,{clauses,Cs},Extra}, _Prec, Opts) -> {force_nl,fun_info(Extra), - {list,[{first,'fun',fun_clauses(Cs, Hook)},'end']}}; -lexpr({'query',_,Lc}, _Prec, Hook) -> - {list,[{step,leaf("query"),lexpr(Lc, 0, Hook)},'end']}; -lexpr({call,_,{remote,_,{atom,_,M},{atom,_,F}=N}=Name,Args}, Prec, Hook) -> + {list,[{first,'fun',fun_clauses(Cs, Opts)},'end']}}; +lexpr({'query',_,Lc}, _Prec, Opts) -> + {list,[{step,leaf("query"),lexpr(Lc, 0, Opts)},'end']}; +lexpr({call,_,{remote,_,{atom,_,M},{atom,_,F}=N}=Name,Args}, Prec, Opts) -> case erl_internal:bif(M, F, length(Args)) of true -> - call(N, Args, Prec, Hook); + call(N, Args, Prec, Opts); false -> - call(Name, Args, Prec, Hook) + call(Name, Args, Prec, Opts) end; -lexpr({call,_,Name,Args}, Prec, Hook) -> - call(Name, Args, Prec, Hook); -lexpr({'try',_,Es,Scs,Ccs,As}, _, Hook) -> +lexpr({call,_,Name,Args}, Prec, Opts) -> + call(Name, Args, Prec, Opts); +lexpr({'try',_,Es,Scs,Ccs,As}, _, Opts) -> {list,[if Scs =:= [] -> - {step,'try',body(Es, Hook)}; + {step,'try',body(Es, Opts)}; true -> - {step,{list,[{step,'try',body(Es, Hook)},'of']}, - cr_clauses(Scs, Hook)} + {step,{list,[{step,'try',body(Es, Opts)},'of']}, + cr_clauses(Scs, Opts)} end, if Ccs =:= [] -> []; true -> - {step,'catch',try_clauses(Ccs, Hook)} + {step,'catch',try_clauses(Ccs, Opts)} end, if As =:= [] -> []; true -> - {step,'after',body(As, Hook)} + {step,'after',body(As, Opts)} end, 'end']}; -lexpr({'catch',_,Expr}, Prec, Hook) -> +lexpr({'catch',_,Expr}, Prec, Opts) -> {P,R} = preop_prec('catch'), - El = {list,[{step,'catch',lexpr(Expr, R, Hook)}]}, + El = {list,[{step,'catch',lexpr(Expr, R, Opts)}]}, maybe_paren(P, Prec, El); -lexpr({match,_,Lhs,Rhs}, Prec, Hook) -> +lexpr({match,_,Lhs,Rhs}, Prec, Opts) -> {L,P,R} = inop_prec('='), - Pl = lexpr(Lhs, L, Hook), - Rl = lexpr(Rhs, R, Hook), + Pl = lexpr(Lhs, L, Opts), + Rl = lexpr(Rhs, R, Opts), El = {list,[{cstep,[Pl,' ='],Rl}]}, maybe_paren(P, Prec, El); -lexpr({op,_,Op,Arg}, Prec, Hook) -> +lexpr({op,_,Op,Arg}, Prec, Opts) -> {P,R} = preop_prec(Op), Ol = leaf(format("~s ", [Op])), - El = [Ol,lexpr(Arg, R, Hook)], + El = [Ol,lexpr(Arg, R, Opts)], maybe_paren(P, Prec, El); -lexpr({op,_,Op,Larg,Rarg}, Prec, Hook) when Op =:= 'orelse'; +lexpr({op,_,Op,Larg,Rarg}, Prec, Opts) when Op =:= 'orelse'; Op =:= 'andalso' -> %% Breaks lines since R12B. {L,P,R} = inop_prec(Op), - Ll = lexpr(Larg, L, Hook), + Ll = lexpr(Larg, L, Opts), Ol = leaf(format("~s", [Op])), - Lr = lexpr(Rarg, R, Hook), + Lr = lexpr(Rarg, R, Opts), El = {prefer_nl,[[]],[Ll,Ol,Lr]}, maybe_paren(P, Prec, El); -lexpr({op,_,Op,Larg,Rarg}, Prec, Hook) -> +lexpr({op,_,Op,Larg,Rarg}, Prec, Opts) -> {L,P,R} = inop_prec(Op), - Ll = lexpr(Larg, L, Hook), + Ll = lexpr(Larg, L, Opts), Ol = leaf(format("~s", [Op])), - Lr = lexpr(Rarg, R, Hook), + Lr = lexpr(Rarg, R, Opts), El = {list,[Ll,Ol,Lr]}, maybe_paren(P, Prec, El); %% Special expressions which are not really legal everywhere. -lexpr({remote,_,M,F}, Prec, Hook) -> +lexpr({remote,_,M,F}, Prec, Opts) -> {L,P,R} = inop_prec(':'), - NameItem = lexpr(M, L, Hook), - CallItem = lexpr(F, R, Hook), + NameItem = lexpr(M, L, Opts), + CallItem = lexpr(F, R, Opts), maybe_paren(P, Prec, [NameItem,$:,CallItem]); %% BIT SYNTAX: -lexpr({bin,_,Fs}, _, Hook) -> - bit_grp(Fs, Hook); +lexpr({bin,_,Fs}, _, Opts) -> + bit_grp(Fs, Opts); %% Special case for straight values. lexpr({value,_,Val}, _,_) -> leaf(write(Val)); %% Now do the hook. -lexpr(Other, _Precedence, none) -> +lexpr(Other, _Precedence, #options{hook = none}) -> leaf(format("INVALID-FORM:~w:",[Other])); -lexpr(HookExpr, Precedence, {Mod,Func,Eas}) when Mod =/= 'fun' -> +lexpr(HookExpr, Precedence, #options{hook = {Mod,Func,Eas}}) + when Mod =/= 'fun' -> {ehook,HookExpr,Precedence,{Mod,Func,Eas}}; -lexpr(HookExpr, Precedence, Func) -> - {hook,HookExpr,Precedence,Func}. +lexpr(HookExpr, Precedence, #options{hook = Func, opts = Options}) -> + {hook,HookExpr,Precedence,Func,Options}. -call(Name, Args, Prec, Hook) -> +call(Name, Args, Prec, Opts) -> {F,P} = func_prec(), - Item = {first,lexpr(Name, F, Hook),args(Args, Hook)}, + Item = {first,lexpr(Name, F, Opts),args(Args, Opts)}, maybe_paren(P, Prec, Item). fun_info(Extra) -> @@ -565,32 +604,18 @@ fun_info(Extra) -> %% BITS: -bit_grp(Fs, Hook) -> - append([['<<'], - [try - true = Fs =/= [], - S = bin_string(Fs), - true = io_lib:printable_list(S), - {string,S} - catch _:_ -> - bit_elems(Fs, Hook) - end], - ['>>']]). - -bin_string([]) -> - []; -bin_string([{bin_element,_,{char,_,C},_,_}|Bin]) -> - [C | bin_string(Bin)]. +bit_grp(Fs, Opts) -> + append([['<<'], [bit_elems(Fs, Opts)], ['>>']]). -bit_elems(Es, Hook) -> - expr_list(Es, $,, fun bit_elem/2, Hook). +bit_elems(Es, Opts) -> + expr_list(Es, $,, fun bit_elem/2, Opts). -bit_elem({bin_element,_,Expr,Sz,Types}, Hook) -> +bit_elem({bin_element,_,Expr,Sz,Types}, Opts) -> P = max_prec(), - VChars = lexpr(Expr, P, Hook), + VChars = lexpr(Expr, P, Opts), SChars = if Sz =/= default -> - [VChars,$:,lexpr(Sz, P, Hook)]; + [VChars,$:,lexpr(Sz, P, Opts)]; true -> VChars end, @@ -618,157 +643,157 @@ bit_elem_type(T) -> record_name(Name) -> leaf(format("#~w", [Name])). -record_fields(Fs, Hook) -> - tuple(Fs, fun record_field/2, Hook). +record_fields(Fs, Opts) -> + tuple(Fs, fun record_field/2, Opts). -record_field({record_field,_,F,Val}, Hook) -> +record_field({record_field,_,F,Val}, Opts) -> {L,_P,R} = inop_prec('='), - Fl = lexpr(F, L, Hook), - Vl = lexpr(Val, R, Hook), + Fl = lexpr(F, L, Opts), + Vl = lexpr(Val, R, Opts), {list,[{cstep,[Fl,' ='],Vl}]}; -record_field({typed_record_field,{record_field,_,F,Val},Type}, Hook) -> +record_field({typed_record_field,{record_field,_,F,Val},Type}, Opts) -> {L,_P,R} = inop_prec('='), - Fl = lexpr(F, L, Hook), - Vl = typed(lexpr(Val, R, Hook), Type), + Fl = lexpr(F, L, Opts), + Vl = typed(lexpr(Val, R, Opts), Type), {list,[{cstep,[Fl,' ='],Vl}]}; -record_field({typed_record_field,Field,Type}, Hook) -> - typed(record_field(Field, Hook), Type); -record_field({record_field,_,F}, Hook) -> - lexpr(F, 0, Hook). - -list({cons,_,H,T}, Es, Hook) -> - list(T, [H|Es], Hook); -list({nil,_}, Es, Hook) -> - proper_list(reverse(Es), Hook); -list(Other, Es, Hook) -> - improper_list(reverse(Es, [Other]), Hook). - -%% if_clauses(Clauses, Hook) -> [Char]. +record_field({typed_record_field,Field,Type}, Opts) -> + typed(record_field(Field, Opts), Type); +record_field({record_field,_,F}, Opts) -> + lexpr(F, 0, Opts). + +list({cons,_,H,T}, Es, Opts) -> + list(T, [H|Es], Opts); +list({nil,_}, Es, Opts) -> + proper_list(reverse(Es), Opts); +list(Other, Es, Opts) -> + improper_list(reverse(Es, [Other]), Opts). + +%% if_clauses(Clauses, Opts) -> [Char]. %% Print 'if' clauses. -if_clauses(Cs, Hook) -> - clauses(fun if_clause/2, Hook, Cs). +if_clauses(Cs, Opts) -> + clauses(fun if_clause/2, Opts, Cs). -if_clause({clause,_,[],G,B}, Hook) -> - Gl = [guard_no_when(G, Hook),' ->'], - {step,Gl,body(B, Hook)}. +if_clause({clause,_,[],G,B}, Opts) -> + Gl = [guard_no_when(G, Opts),' ->'], + {step,Gl,body(B, Opts)}. -guard_no_when([E|Es], Hook) when is_list(E) -> - expr_list([E|Es], $;, fun guard0/2, Hook); -guard_no_when([E|Es], Hook) -> % before R6 - guard_no_when([[E|Es]], Hook); +guard_no_when([E|Es], Opts) when is_list(E) -> + expr_list([E|Es], $;, fun guard0/2, Opts); +guard_no_when([E|Es], Opts) -> % before R6 + guard_no_when([[E|Es]], Opts); guard_no_when([], _) -> % cannot happen leaf("true"). -%% cr_clauses(Clauses, Hook) -> [Char]. +%% cr_clauses(Clauses, Opts) -> [Char]. %% Print 'case'/'receive' clauses. -cr_clauses(Cs, Hook) -> - clauses(fun cr_clause/2, Hook, Cs). +cr_clauses(Cs, Opts) -> + clauses(fun cr_clause/2, Opts, Cs). -cr_clause({clause,_,[T],G,B}, Hook) -> - El = lexpr(T, 0, Hook), - Gl = guard_when(El, G, Hook), - Bl = body(B, Hook), +cr_clause({clause,_,[T],G,B}, Opts) -> + El = lexpr(T, 0, Opts), + Gl = guard_when(El, G, Opts), + Bl = body(B, Opts), {step,Gl,Bl}. -%% try_clauses(Clauses, Hook) -> [Char]. +%% try_clauses(Clauses, Opts) -> [Char]. %% Print 'try' clauses. -try_clauses(Cs, Hook) -> - clauses(fun try_clause/2, Hook, Cs). +try_clauses(Cs, Opts) -> + clauses(fun try_clause/2, Opts, Cs). -try_clause({clause,_,[{tuple,_,[{atom,_,throw},V,S]}],G,B}, Hook) -> - El = lexpr(V, 0, Hook), - Sl = stack_backtrace(S, [El], Hook), - Gl = guard_when(Sl, G, Hook), - Bl = body(B, Hook), +try_clause({clause,_,[{tuple,_,[{atom,_,throw},V,S]}],G,B}, Opts) -> + El = lexpr(V, 0, Opts), + Sl = stack_backtrace(S, [El], Opts), + Gl = guard_when(Sl, G, Opts), + Bl = body(B, Opts), {step,Gl,Bl}; -try_clause({clause,_,[{tuple,_,[C,V,S]}],G,B}, Hook) -> - Cs = lexpr(C, 0, Hook), - El = lexpr(V, 0, Hook), +try_clause({clause,_,[{tuple,_,[C,V,S]}],G,B}, Opts) -> + Cs = lexpr(C, 0, Opts), + El = lexpr(V, 0, Opts), CsEl = [Cs,$:,El], - Sl = stack_backtrace(S, CsEl, Hook), - Gl = guard_when(Sl, G, Hook), - Bl = body(B, Hook), + Sl = stack_backtrace(S, CsEl, Opts), + Gl = guard_when(Sl, G, Opts), + Bl = body(B, Opts), {step,Gl,Bl}. -stack_backtrace({var,_,'_'}, El, _Hook) -> +stack_backtrace({var,_,'_'}, El, _Opts) -> El; -stack_backtrace(S, El, Hook) -> - El++[$:,lexpr(S, 0, Hook)]. +stack_backtrace(S, El, Opts) -> + El++[$:,lexpr(S, 0, Opts)]. -%% fun_clauses(Clauses, Hook) -> [Char]. +%% fun_clauses(Clauses, Opts) -> [Char]. %% Print 'fun' clauses. -fun_clauses(Cs, Hook) -> - nl_clauses(fun fun_clause/2, [$;], Hook, Cs). +fun_clauses(Cs, Opts) -> + nl_clauses(fun fun_clause/2, [$;], Opts, Cs). -fun_clause({clause,_,A,G,B}, Hook) -> - El = args(A, Hook), - Gl = guard_when(El, G, Hook), - Bl = body(B, Hook), +fun_clause({clause,_,A,G,B}, Opts) -> + El = args(A, Opts), + Gl = guard_when(El, G, Opts), + Bl = body(B, Opts), {step,Gl,Bl}. -%% cond_clauses(Clauses, Hook) -> [Char]. +%% cond_clauses(Clauses, Opts) -> [Char]. %% Print 'cond' clauses. -cond_clauses(Cs, Hook) -> - clauses(fun cond_clause/2, Hook, Cs). +cond_clauses(Cs, Opts) -> + clauses(fun cond_clause/2, Opts, Cs). -cond_clause({clause,_,[],[[E]],B}, Hook) -> - {step,[lexpr(E, Hook),' ->'],body(B, Hook)}. +cond_clause({clause,_,[],[[E]],B}, Opts) -> + {step,[lexpr(E, Opts),' ->'],body(B, Opts)}. -%% nl_clauses(Type, Hook, Clauses) -> [Char]. +%% nl_clauses(Type, Opts, Clauses) -> [Char]. %% Generic clause printing function (always breaks lines). -nl_clauses(Type, Sep, Hook, Cs) -> - {prefer_nl,Sep,lexprs(Cs, Type, Hook)}. +nl_clauses(Type, Sep, Opts, Cs) -> + {prefer_nl,Sep,lexprs(Cs, Type, Opts)}. -%% clauses(Type, Hook, Clauses) -> [Char]. +%% clauses(Type, Opts, Clauses) -> [Char]. %% Generic clause printing function (breaks lines since R12B). -clauses(Type, Hook, Cs) -> - {prefer_nl,[$;],lexprs(Cs, Type, Hook)}. +clauses(Type, Opts, Cs) -> + {prefer_nl,[$;],lexprs(Cs, Type, Opts)}. -%% lc_quals(Qualifiers, After, Hook) +%% lc_quals(Qualifiers, After, Opts) %% List comprehension qualifiers (breaks lines since R12B). -lc_quals(Qs, Hook) -> - {prefer_nl,[$,],lexprs(Qs, fun lc_qual/2, Hook)}. +lc_quals(Qs, Opts) -> + {prefer_nl,[$,],lexprs(Qs, fun lc_qual/2, Opts)}. -lc_qual({b_generate,_,Pat,E}, Hook) -> - Pl = lexpr(Pat, 0, Hook), - {list,[{step,[Pl,leaf(" <=")],lexpr(E, 0, Hook)}]}; -lc_qual({generate,_,Pat,E}, Hook) -> - Pl = lexpr(Pat, 0, Hook), - {list,[{step,[Pl,leaf(" <-")],lexpr(E, 0, Hook)}]}; -lc_qual(Q, Hook) -> - lexpr(Q, 0, Hook). +lc_qual({b_generate,_,Pat,E}, Opts) -> + Pl = lexpr(Pat, 0, Opts), + {list,[{step,[Pl,leaf(" <=")],lexpr(E, 0, Opts)}]}; +lc_qual({generate,_,Pat,E}, Opts) -> + Pl = lexpr(Pat, 0, Opts), + {list,[{step,[Pl,leaf(" <-")],lexpr(E, 0, Opts)}]}; +lc_qual(Q, Opts) -> + lexpr(Q, 0, Opts). -proper_list(Es, Hook) -> - {seq,$[,$],$,,lexprs(Es, Hook)}. +proper_list(Es, Opts) -> + {seq,$[,$],$,,lexprs(Es, Opts)}. -improper_list(Es, Hook) -> - {seq,$[,$],{$,,$|},lexprs(Es, Hook)}. +improper_list(Es, Opts) -> + {seq,$[,$],{$,,$|},lexprs(Es, Opts)}. -tuple(L, Hook) -> - tuple(L, fun lexpr/2, Hook). +tuple(L, Opts) -> + tuple(L, fun lexpr/2, Opts). -tuple(Es, F, Hook) -> - {seq,${,$},$,,lexprs(Es, F, Hook)}. +tuple(Es, F, Opts) -> + {seq,${,$},$,,lexprs(Es, F, Opts)}. -args(As, Hook) -> - {seq,$(,$),[$,],lexprs(As, Hook)}. +args(As, Opts) -> + {seq,$(,$),[$,],lexprs(As, Opts)}. -expr_list(Es, Sep, F, Hook) -> - {seq,[],[],Sep,lexprs(Es, F, Hook)}. +expr_list(Es, Sep, F, Opts) -> + {seq,[],[],Sep,lexprs(Es, F, Opts)}. -lexprs(Es, Hook) -> - lexprs(Es, fun lexpr/2, Hook). +lexprs(Es, Opts) -> + lexprs(Es, fun lexpr/2, Opts). -lexprs(Es, F, Hook) -> - [F(E, Hook) || E <- Es]. +lexprs(Es, F, Opts) -> + [F(E, Opts) || E <- Es]. maybe_paren(P, Prec, Expr) when P < Prec -> [$(,Expr,$)]; @@ -781,13 +806,13 @@ leaf(S) -> %%% Do the formatting. Currently nothing fancy. Could probably have %%% done it in one single pass. -frmt(Item) -> - frmt(Item, 0). +frmt(Item, PP) -> + frmt(Item, 0, PP). -frmt(Item, I) -> +frmt(Item, I, PP) -> ST = spacetab(), WT = wordtable(), - {Chars,_Length} = f(Item, I, ST, WT), + {Chars,_Length} = f(Item, I, ST, WT, PP), [Chars]. %%% What the tags mean: @@ -803,6 +828,7 @@ frmt(Item, I) -> %%% - {force_nl,ExtraInfo,I}: fun-info (a comment) forces linebreak before I. %%% - {prefer_nl,Sep,IPs}: forces linebreak between Is unlesss negative %%% indentation. +%%% - {char,C}: a character %%% - {string,S}: a string. %%% - {hook,...}, {ehook,...}: hook expressions. %%% @@ -812,22 +838,22 @@ frmt(Item, I) -> %%% cstep works similarly, but no linebreak if the width of I1 is less %%% than the indentation (this is for "A = <expression over several lines>). -f([]=Nil, _I0, _ST, _WT) -> +f([]=Nil, _I0, _ST, _WT, _PP) -> {Nil,0}; -f(C, _I0, _ST, _WT) when is_integer(C) -> +f(C, _I0, _ST, _WT, _PP) when is_integer(C) -> {C,1}; -f({leaf,Length,Chars}, _I0, _ST, _WT) -> +f({leaf,Length,Chars}, _I0, _ST, _WT, _PP) -> {Chars,Length}; -f([Item|Items], I0, ST, WT) -> - consecutive(Items, f(Item, I0, ST, WT), I0, ST, WT); -f({list,Items}, I0, ST, WT) -> - f({seq,[],[],[[]],Items}, I0, ST, WT); -f({first,E,Item}, I0, ST, WT) -> - f({seq,E,[],[[]],[Item]}, I0, ST, WT); -f({seq,Before,After,Sep,LItems}, I0, ST, WT) -> - BCharsSize = f(Before, I0, ST, WT), +f([Item|Items], I0, ST, WT, PP) -> + consecutive(Items, f(Item, I0, ST, WT, PP), I0, ST, WT, PP); +f({list,Items}, I0, ST, WT, PP) -> + f({seq,[],[],[[]],Items}, I0, ST, WT, PP); +f({first,E,Item}, I0, ST, WT, PP) -> + f({seq,E,[],[[]],[Item]}, I0, ST, WT, PP); +f({seq,Before,After,Sep,LItems}, I0, ST, WT, PP) -> + BCharsSize = f(Before, I0, ST, WT, PP), I = indent(BCharsSize, I0), - CharsSizeL = fl(LItems, Sep, I, After, ST, WT), + CharsSizeL = fl(LItems, Sep, I, After, ST, WT, PP), {CharsL,SizeL} = unz(CharsSizeL), {BCharsL,BSizeL} = unz1([BCharsSize]), Sizes = BSizeL ++ SizeL, @@ -848,15 +874,15 @@ f({seq,Before,After,Sep,LItems}, I0, ST, WT) -> {BCharsL++insert_newlines(CharsSizeL, I, ST), nsz(lists:last(Sizes), I0)} end; -f({force_nl,_ExtraInfoItem,Item}, I, ST, WT) when I < 0 -> +f({force_nl,_ExtraInfoItem,Item}, I, ST, WT, PP) when I < 0 -> %% Extra info is a comment; cannot have that on the same line - f(Item, I, ST, WT); -f({force_nl,ExtraInfoItem,Item}, I, ST, WT) -> - f({prefer_nl,[],[ExtraInfoItem,Item]}, I, ST, WT); -f({prefer_nl,Sep,LItems}, I, ST, WT) when I < 0 -> - f({seq,[],[],Sep,LItems}, I, ST, WT); -f({prefer_nl,Sep,LItems}, I0, ST, WT) -> - CharsSize2L = fl(LItems, Sep, I0, [], ST, WT), + f(Item, I, ST, WT, PP); +f({force_nl,ExtraInfoItem,Item}, I, ST, WT, PP) -> + f({prefer_nl,[],[ExtraInfoItem,Item]}, I, ST, WT, PP); +f({prefer_nl,Sep,LItems}, I, ST, WT, PP) when I < 0 -> + f({seq,[],[],Sep,LItems}, I, ST, WT, PP); +f({prefer_nl,Sep,LItems}, I0, ST, WT, PP) -> + CharsSize2L = fl(LItems, Sep, I0, [], ST, WT, PP), {_CharsL,Sizes} = unz(CharsSize2L), if Sizes =:= [] -> @@ -864,37 +890,40 @@ f({prefer_nl,Sep,LItems}, I0, ST, WT) -> true -> {insert_newlines(CharsSize2L, I0, ST),nsz(lists:last(Sizes), I0)} end; -f({string,S}, I, ST, WT) -> - f(write_a_string(S, I), I, ST, WT); -f({hook,HookExpr,Precedence,Func}, I, _ST, _WT) -> - Chars = Func(HookExpr, I, Precedence, Func), +f({char,C}, I, ST, WT, PP) -> + f(write_a_char(C, PP), I, ST, WT, PP); +f({string,S}, I, ST, WT, PP) -> + f(write_a_string(S, I, PP), I, ST, WT, PP); +f({hook,HookExpr,Precedence,Func,Options}, I, _ST, _WT, _PP) -> + Chars = Func(HookExpr, I, Precedence, Options), {Chars,indentation(Chars, I)}; -f({ehook,HookExpr,Precedence,{Mod,Func,Eas}=ModFuncEas}, I, _ST, _WT) -> +f({ehook,HookExpr,Precedence,{Mod,Func,Eas}=ModFuncEas}, I, _ST, _WT, _PP) -> Chars = apply(Mod, Func, [HookExpr,I,Precedence,ModFuncEas|Eas]), {Chars,indentation(Chars, I)}; -f(WordName, _I, _ST, WT) -> % when is_atom(WordName) +f(WordName, _I, _ST, WT, _PP) -> % when is_atom(WordName) word(WordName, WT). -define(IND, 4). %% fl(ListItems, I0, ST, WT) -> [[CharsSize1,CharsSize2]] %% ListItems = [{Item,Items}|Item] -fl([], _Sep, I0, After, ST, WT) -> - [[f(After, I0, ST, WT),{[],0}]]; -fl(CItems, Sep0, I0, After, ST, WT) -> +fl([], _Sep, I0, After, ST, WT, PP) -> + [[f(After, I0, ST, WT, PP),{[],0}]]; +fl(CItems, Sep0, I0, After, ST, WT, PP) -> F = fun({step,Item1,Item2}, S) -> - [f(Item1, I0, ST, WT),f([Item2,S], incr(I0, ?IND), ST, WT)]; + [f(Item1, I0, ST, WT, PP), + f([Item2,S], incr(I0, ?IND), ST, WT, PP)]; ({cstep,Item1,Item2}, S) -> - {_,Sz1} = CharSize1 = f(Item1, I0, ST, WT), + {_,Sz1} = CharSize1 = f(Item1, I0, ST, WT, PP), if is_integer(Sz1), Sz1 < ?IND -> Item2p = [leaf("\s"),Item2,S], - [consecutive(Item2p, CharSize1, I0, ST, WT),{[],0}]; + [consecutive(Item2p, CharSize1, I0, ST, WT, PP),{[],0}]; true -> - [CharSize1,f([Item2,S], incr(I0, ?IND), ST, WT)] + [CharSize1,f([Item2,S], incr(I0, ?IND), ST, WT, PP)] end; (Item, S) -> - [f([Item,S], I0, ST, WT),{[],0}] + [f([Item,S], I0, ST, WT, PP),{[],0}] end, {Sep,LastSep} = case Sep0 of {_,_} -> Sep0; _ -> {Sep0,Sep0} end, fl1(CItems, F, Sep, LastSep, After). @@ -906,10 +935,10 @@ fl1([CItem1,CItem2], F, _Sep, LastSep, After) -> fl1([CItem|CItems], F, Sep, LastSep, After) -> [F(CItem, Sep)|fl1(CItems, F, Sep, LastSep, After)]. -consecutive(Items, CharSize1, I0, ST, WT) -> +consecutive(Items, CharSize1, I0, ST, WT, PP) -> {CharsSizes,_Length} = mapfoldl(fun(Item, Len) -> - CharsSize = f(Item, Len, ST, WT), + CharsSize = f(Item, Len, ST, WT, PP), {CharsSize,indent(CharsSize, Len)} end, indent(CharSize1, I0), Items), {CharsL,SizeL} = unz1([CharSize1|CharsSizes]), @@ -999,26 +1028,40 @@ has_nl([C|Cs]) -> has_nl([]) -> false. +write_a_char(C, PP) -> + flat_leaf(write_char(C, PP)). + -define(MIN_SUBSTRING, 5). -write_a_string(S, I) when I < 0; S =:= [] -> - leaf(write_string(S)); -write_a_string(S, I) -> +write_a_string(S, I, PP) when I < 0; S =:= [] -> + flat_leaf(write_string(S, PP)); +write_a_string(S, I, PP) -> Len = erlang:max(?MAXLINE-I, ?MIN_SUBSTRING), - {list,write_a_string(S, Len, Len)}. + {list,write_a_string(S, Len, Len, PP)}. -write_a_string([], _N, _Len) -> +write_a_string([], _N, _Len, _PP) -> []; -write_a_string(S, N, Len) -> +write_a_string(S, N, Len, PP) -> SS = string:sub_string(S, 1, N), - Sl = write_string(SS), - case (iolist_size(Sl) > Len) and (N > ?MIN_SUBSTRING) of + Sl = write_string(SS, PP), + case (length(Sl) > Len) and (N > ?MIN_SUBSTRING) of true -> - write_a_string(S, N-1, Len); + write_a_string(S, N-1, Len, PP); false -> - [leaf(Sl)|write_a_string(lists:nthtail(length(SS), S), Len, Len)] + [flat_leaf(Sl) | + write_a_string(lists:nthtail(length(SS), S), Len, Len, PP)] end. +flat_leaf(S) -> + L = lists:flatten(S), + {leaf,length(L),L}. + +write_string(S, PP) -> + lists:flatten((PP#pp.string_fun)(S)). + +write_char(C, PP) -> + lists:flatten((PP#pp.char_fun)(C)). + %% %% Utilities %% diff --git a/lib/stdlib/src/erl_scan.erl b/lib/stdlib/src/erl_scan.erl index d880656565..20eb341c31 100644 --- a/lib/stdlib/src/erl_scan.erl +++ b/lib/stdlib/src/erl_scan.erl @@ -55,7 +55,15 @@ token_info/1,token_info/2, attributes_info/1,attributes_info/2,set_attribute/3]). --export_type([error_info/0, line/0, return_cont/0, tokens_result/0]). +%%% Private +-export([continuation_location/1]). + +-export_type([error_info/0, + line/0, + location/0, + options/0, + return_cont/0, + tokens_result/0]). %%% %%% Defines and type definitions @@ -74,7 +82,8 @@ -type location() :: line() | {line(),column()}. -type resword_fun() :: fun((atom()) -> boolean()). -type option() :: 'return' | 'return_white_spaces' | 'return_comments' - | 'text' | {'reserved_word_fun', resword_fun()}. + | 'text' | {'reserved_word_fun', resword_fun()} + | 'unicode'. -type options() :: option() | [option()]. -type symbol() :: atom() | float() | integer() | string(). -type info_line() :: integer() | term(). @@ -95,7 +104,8 @@ {resword_fun = fun reserved_word/1 :: resword_fun(), ws = false :: boolean(), comment = false :: boolean(), - text = false :: boolean()}). + text = false :: boolean(), + unicode = false :: boolean()}). %%---------------------------------------------------------------------------- @@ -183,6 +193,11 @@ tokens({erl_scan_continuation,Cs,Col,Toks,Line,St,Any,Fun}, CharSpec, _Loc, _Opts) -> tokens1(Cs++CharSpec, St, Line, Col, Toks, Fun, Any). +continuation_location({erl_scan_continuation,_,no_col,_,Line,_,_,_}) -> + Line; +continuation_location({erl_scan_continuation,_,Col,_,Line,_,_,_}) -> + {Line,Col}. + -type attribute_item() :: 'column' | 'length' | 'line' | 'location' | 'text'. -type info_location() :: location() | term(). @@ -322,13 +337,20 @@ string_thing(_) -> "string". (C >= $\000 andalso C =< $\s orelse C >= $\200 andalso C =< $\240)). -define(DIGIT(C), C >= $0, C =< $9). -define(CHAR(C), is_integer(C), C >= 0). - -%% A workaround: Unicode strings are not returned as strings, but as -%% lists of integers. For instance, "b\x{aaa}c" => [98,2730,99]. This -%% is to protect the system from character codes greater than 255. To -%% be removed. Search for UNI to find workaround code. +-define(UNICODE(C), + (C >= 0 andalso C < 16#D800 orelse + C > 16#DFFF andalso C < 16#FFFE orelse + C > 16#FFFF andalso C =< 16#10FFFF)). + +%% When the option 'unicode' is false: return Unicode strings as lists +%% of integers and Unicode characters as integers. For instance, +%% erl_scan:string("\"b\x{aaa}c\".") is equivalent to +%% erl_scan:string("[98,2730,99]."). This is to protect the caller +%% from character codes greater than 255. Search for UNI to find code +%% implementing this "feature". The 'unicode' option is undocumented +%% and will probably be removed later. -define(NO_UNICODE, 0). --define(UNI255(C), (C) =< 16#ff). +-define(UNI255(C), (C =< 16#ff)). options(Opts0) when is_list(Opts0) -> Opts = lists:foldr(fun expand_opt/2, [], Opts0), @@ -342,10 +364,12 @@ options(Opts0) when is_list(Opts0) -> Comment = proplists:get_bool(return_comments, Opts), WS = proplists:get_bool(return_white_spaces, Opts), Txt = proplists:get_bool(text, Opts), + Unicode = proplists:get_bool(unicode, Opts), #erl_scan{resword_fun = RW_fun, comment = Comment, ws = WS, - text = Txt}; + text = Txt, + unicode = Unicode}; options(Opt) -> options([Opt]). @@ -626,15 +650,12 @@ scan1([$~|Cs], St, Line, Col, Toks) -> scan1([$&|Cs], St, Line, Col, Toks) -> tok2(Cs, St, Line, Col, Toks, "&", '&', 1); %% End of optimization. -scan1([C|Cs], St, Line, Col, Toks) when ?CHAR(C) -> +scan1([C|Cs], St, Line, Col, Toks) when ?CHAR(C), ?UNI255(C) -> Str = [C], - case catch list_to_atom(Str) of - Sym when is_atom(Sym) -> - tok2(Cs, St, Line, Col, Toks, Str, Sym, 1); - _ -> - Ncol = incr_column(Col, 1), - scan_error({illegal,character}, Line, Col, Line, Ncol, Cs) - end; + tok2(Cs, St, Line, Col, Toks, Str, list_to_atom(Str), 1); +scan1([C|Cs], _St, Line, Col, _Toks) when ?CHAR(C) -> + Ncol = incr_column(Col, 1), + scan_error({illegal,character}, Line, Col, Line, Ncol, Cs); scan1([]=Cs, _St, Line, Col, Toks) -> {more,{Cs,Col,Toks,Line,[],fun scan/6}}; scan1(eof=Cs, _St, Line, Col, Toks) -> @@ -832,32 +853,44 @@ scan_char([$\\|Cs]=Cs0, St, Line, Col, Toks) -> {eof,Ncol} -> scan_error(char, Line, Col, Line, Ncol, eof); {nl,Val,Str,Ncs,Ncol} -> - Attrs = attributes(Line, Col, St, "$\\"++Str), + Attrs = attributes(Line, Col, St, "$\\"++Str), %" Ntoks = [{char,Attrs,Val}|Toks], scan1(Ncs, St, Line+1, Ncol, Ntoks); {unicode,Val,Str,Ncs,Ncol} -> - Attrs = attributes(Line, Col, St, "$\\"++Str), - Ntoks = [{integer,Attrs,Val}|Toks], % UNI + Attrs = attributes(Line, Col, St, "$\\"++Str), %" + Tag = char_tag(Val, St), % UNI + Ntoks = [{Tag,Attrs,Val}|Toks], scan1(Ncs, St, Line, Ncol, Ntoks); {Val,Str,Ncs,Ncol} -> - Attrs = attributes(Line, Col, St, "$\\"++Str), + Attrs = attributes(Line, Col, St, "$\\"++Str), %" Ntoks = [{char,Attrs,Val}|Toks], scan1(Ncs, St, Line, Ncol, Ntoks) end; scan_char([$\n=C|Cs], St, Line, Col, Toks) -> Attrs = attributes(Line, Col, St, [$$,C]), scan1(Cs, St, Line+1, new_column(Col, 1), [{char,Attrs,C}|Toks]); -scan_char([C|Cs], St, Line, Col, Toks) when ?CHAR(C) -> - Tag = if ?UNI255(C) -> char; true -> integer end, % UNI +scan_char([C|Cs], St, Line, Col, Toks) when ?UNICODE(C) -> + Tag = char_tag(C, St), % UNI Attrs = attributes(Line, Col, St, [$$,C]), scan1(Cs, St, Line, incr_column(Col, 2), [{Tag,Attrs,C}|Toks]); +scan_char([C|_Cs], _St, Line, Col, _Toks) when ?CHAR(C) -> + scan_error({illegal,character}, Line, Col, Line, incr_column(Col, 1), eof); scan_char([], _St, Line, Col, Toks) -> {more,{[$$],Col,Toks,Line,[],fun scan/6}}; scan_char(eof, _St, Line, Col, _Toks) -> scan_error(char, Line, Col, Line, incr_column(Col, 1), eof). +-compile({inline,[char_tag/2]}). + +char_tag(C, _St) when ?UNI255(C) -> + char; +char_tag(_C, #erl_scan{unicode = true}) -> + char; +char_tag(_C, _St) -> + integer. + scan_string(Cs, St, Line, Col, Toks, {Wcs,Str,Line0,Col0,Uni0}) -> - case scan_string0(Cs, St, Line, Col, $\", Str, Wcs, Uni0) of + case scan_string0(Cs, St, Line, Col, $\", true, Str, Wcs, Uni0) of %" {more,Ncs,Nline,Ncol,Nstr,Nwcs,Uni} -> State = {Nwcs,Nstr,Line0,Col0,Uni}, {more,{Ncs,Ncol,Toks,Nline,State,fun scan_string/6}}; @@ -865,8 +898,9 @@ scan_string(Cs, St, Line, Col, Toks, {Wcs,Str,Line0,Col0,Uni0}) -> scan_error(Error, Nline, Ncol, Nline, EndCol, Ncs); {error,Nline,Ncol,Nwcs,Ncs} -> Estr = string:substr(Nwcs, 1, 16), % Expanded escape chars. - scan_error({string,$\",Estr}, Line0, Col0, Nline, Ncol, Ncs); - {Ncs,Nline,Ncol,Nstr,Nwcs,?NO_UNICODE} -> + scan_error({string,$\",Estr}, Line0, Col0, Nline, Ncol, Ncs); %" + {Ncs,Nline,Ncol,Nstr,Nwcs,Uni} when Uni =:= ?NO_UNICODE; + St#erl_scan.unicode -> Attrs = attributes(Line0, Col0, St, Nstr), scan1(Ncs, St, Nline, Ncol, [{string,Attrs,Nwcs}|Toks]); {Ncs,Nline,Ncol,Nstr,_Nwcs,_Uni} -> @@ -918,7 +952,8 @@ unicode_tokens(Line, Col, Str, Val, St, Toks, Cs, Cline, Ccol) -> [{',',attributes(Cline, Ccol, St, "")} || Cs =/= "\""] ++ [Token|Toks]. scan_qatom(Cs, St, Line, Col, Toks, {Wcs,Str,Line0,Col0,Uni0}) -> - case scan_string0(Cs, St, Line, Col, $\', Str, Wcs, Uni0) of + AllowUni = St#erl_scan.unicode, + case scan_string0(Cs, St, Line, Col, $\', AllowUni, Str, Wcs, Uni0) of %' {more,Ncs,Nline,Ncol,Nstr,Nwcs,Uni} -> State = {Nwcs,Nstr,Line0,Col0,Uni}, {more,{Ncs,Ncol,Toks,Nline,State,fun scan_qatom/6}}; @@ -926,8 +961,9 @@ scan_qatom(Cs, St, Line, Col, Toks, {Wcs,Str,Line0,Col0,Uni0}) -> scan_error(Error, Nline, Ncol, Nline, EndCol, Ncs); {error,Nline,Ncol,Nwcs,Ncs} -> Estr = string:substr(Nwcs, 1, 16), % Expanded escape chars. - scan_error({string,$\',Estr}, Line0, Col0, Nline, Ncol, Ncs); - {Ncs,Nline,Ncol,Nstr,Nwcs,?NO_UNICODE} -> + scan_error({string,$\',Estr}, Line0, Col0, Nline, Ncol, Ncs); %' + {Ncs,Nline,Ncol,Nstr,Nwcs,Uni} -> + true = Uni =:= ?NO_UNICODE orelse AllowUni, case catch list_to_atom(Nwcs) of A when is_atom(A) -> Attrs = attributes(Line0, Col0, St, Nstr), @@ -937,38 +973,40 @@ scan_qatom(Cs, St, Line, Col, Toks, {Wcs,Str,Line0,Col0,Uni0}) -> end end. -scan_string0(Cs, #erl_scan{text=false}, Line, no_col=Col, Q, [], Wcs, Uni) -> - scan_string_no_col(Cs, Line, Col, Q, Wcs, Uni); -scan_string0(Cs, #erl_scan{text=true}, Line, no_col=Col, Q, Str, Wcs, Uni) -> - scan_string1(Cs, Line, Col, Q, Str, Wcs, Uni); -scan_string0(Cs, _St, Line, Col, Q, [], Wcs, Uni) -> - scan_string_col(Cs, Line, Col, Q, Wcs, Uni); -scan_string0(Cs, _St, Line, Col, Q, Str, Wcs, Uni) -> - scan_string1(Cs, Line, Col, Q, Str, Wcs, Uni). +scan_string0(Cs, #erl_scan{text=false}, Line, no_col=Col, Q, U, [], Wcs, Uni) -> + scan_string_no_col(Cs, Line, Col, Q, U, Wcs, Uni); +scan_string0(Cs, #erl_scan{text=true}, Line, no_col=Col, Q, U, Str, Wcs, Uni) -> + scan_string1(Cs, Line, Col, Q, U, Str, Wcs, Uni); +scan_string0(Cs, _St, Line, Col, Q, U, [], Wcs, Uni) -> + scan_string_col(Cs, Line, Col, Q, U, Wcs, Uni); +scan_string0(Cs, _St, Line, Col, Q, U, Str, Wcs, Uni) -> + scan_string1(Cs, Line, Col, Q, U, Str, Wcs, Uni). %% Optimization. Col =:= no_col. -scan_string_no_col([Q|Cs], Line, Col, Q, Wcs, Uni) -> +scan_string_no_col([Q|Cs], Line, Col, Q, _U, Wcs, Uni) -> {Cs,Line,Col,_DontCare=[],lists:reverse(Wcs),Uni}; -scan_string_no_col([$\n=C|Cs], Line, Col, Q, Wcs, Uni) -> - scan_string_no_col(Cs, Line+1, Col, Q, [C|Wcs], Uni); -scan_string_no_col([C|Cs], Line, Col, Q, Wcs, Uni) when C =/= $\\, - ?CHAR(C), ?UNI255(C) -> - scan_string_no_col(Cs, Line, Col, Q, [C|Wcs], Uni); -scan_string_no_col(Cs, Line, Col, Q, Wcs, Uni) -> - scan_string1(Cs, Line, Col, Q, Wcs, Wcs, Uni). +scan_string_no_col([$\n=C|Cs], Line, Col, Q, U, Wcs, Uni) -> + scan_string_no_col(Cs, Line+1, Col, Q, U, [C|Wcs], Uni); +scan_string_no_col([C|Cs], Line, Col, Q, U, Wcs, Uni) when C =/= $\\, + ?CHAR(C), + ?UNI255(C) -> + scan_string_no_col(Cs, Line, Col, Q, U, [C|Wcs], Uni); +scan_string_no_col(Cs, Line, Col, Q, U, Wcs, Uni) -> + scan_string1(Cs, Line, Col, Q, U, Wcs, Wcs, Uni). %% Optimization. Col =/= no_col. -scan_string_col([Q|Cs], Line, Col, Q, Wcs0, Uni) -> +scan_string_col([Q|Cs], Line, Col, Q, _U, Wcs0, Uni) -> Wcs = lists:reverse(Wcs0), Str = [Q|Wcs++[Q]], {Cs,Line,Col+1,Str,Wcs,Uni}; -scan_string_col([$\n=C|Cs], Line, _xCol, Q, Wcs, Uni) -> - scan_string_col(Cs, Line+1, 1, Q, [C|Wcs], Uni); -scan_string_col([C|Cs], Line, Col, Q, Wcs, Uni) when C =/= $\\, - ?CHAR(C), ?UNI255(C) -> - scan_string_col(Cs, Line, Col+1, Q, [C|Wcs], Uni); -scan_string_col(Cs, Line, Col, Q, Wcs, Uni) -> - scan_string1(Cs, Line, Col, Q, Wcs, Wcs, Uni). +scan_string_col([$\n=C|Cs], Line, _xCol, Q, U, Wcs, Uni) -> + scan_string_col(Cs, Line+1, 1, Q, U, [C|Wcs], Uni); +scan_string_col([C|Cs], Line, Col, Q, U, Wcs, Uni) when C =/= $\\, + ?CHAR(C), + ?UNI255(C) -> + scan_string_col(Cs, Line, Col+1, Q, U, [C|Wcs], Uni); +scan_string_col(Cs, Line, Col, Q, U, Wcs, Uni) -> + scan_string1(Cs, Line, Col, Q, U, Wcs, Wcs, Uni). %% UNI_STR is to be replaced by STR when the Unicode-string-to-list %% workaround is eventually removed. @@ -979,14 +1017,14 @@ scan_string_col(Cs, Line, Col, Q, Wcs, Uni) -> %% but then the end location of the error tuple would not correspond %% to the start location of the returned Rest string. (Maybe the end %% location could be modified, but that too is ugly.) -scan_string1([Q|Cs], Line, Col, Q, Str0, Wcs0, Uni) -> +scan_string1([Q|Cs], Line, Col, Q, _U, Str0, Wcs0, Uni) -> Wcs = lists:reverse(Wcs0), Str = ?UNI_STR(Col, [Q|lists:reverse(Str0, [Q])]), {Cs,Line,incr_column(Col, 1),Str,Wcs,Uni}; -scan_string1([$\n=C|Cs], Line, Col, Q, Str, Wcs, Uni) -> +scan_string1([$\n=C|Cs], Line, Col, Q, U, Str, Wcs, Uni) -> Ncol = new_column(Col, 1), - scan_string1(Cs, Line+1, Ncol, Q, ?UNI_STR(Col, [C|Str]), [C|Wcs], Uni); -scan_string1([$\\|Cs]=Cs0, Line, Col, Q, Str, Wcs, Uni) -> + scan_string1(Cs, Line+1, Ncol, Q, U, ?UNI_STR(Col, [C|Str]), [C|Wcs], Uni); +scan_string1([$\\|Cs]=Cs0, Line, Col, Q, U, Str, Wcs, Uni) -> case scan_escape(Cs, Col) of more -> {more,Cs0,Line,Col,Str,Wcs,Uni}; @@ -997,31 +1035,33 @@ scan_string1([$\\|Cs]=Cs0, Line, Col, Q, Str, Wcs, Uni) -> {nl,Val,ValStr,Ncs,Ncol} -> Nstr = ?UNI_STR(Ncol, lists:reverse(ValStr, [$\\|Str])), Nwcs = [Val|Wcs], - scan_string1(Ncs, Line+1, Ncol, Q, Nstr, Nwcs, Uni); - {unicode,_Val,_ValStr,Ncs,Ncol} when Q =:= $' -> %' Emacs + scan_string1(Ncs, Line+1, Ncol, Q, U, Nstr, Nwcs, Uni); + {unicode,_Val,_ValStr,Ncs,Ncol} when not U -> %' Emacs {char_error,Ncs,{illegal,character},Line,Col,incr_column(Ncol, 1)}; {unicode,Val,ValStr,Ncs,Ncol} -> % UNI. Uni is set to Val. Nstr = ?UNI_STR(Ncol, lists:reverse(ValStr, [$\\|Str])), Nwcs = [Val|Wcs], % not used - scan_string1(Ncs, Line, incr_column(Ncol, 1), Q, Nstr, Nwcs, Val); + scan_string1(Ncs, Line, incr_column(Ncol, 1), Q, U, Nstr, Nwcs, Val); {Val,ValStr,Ncs,Ncol} -> Nstr = ?UNI_STR(Ncol, lists:reverse(ValStr, [$\\|Str])), Nwcs = [Val|Wcs], - scan_string1(Ncs, Line, incr_column(Ncol, 1), Q, Nstr, Nwcs, Uni) + scan_string1(Ncs, Line, incr_column(Ncol, 1), Q, U, Nstr, Nwcs, Uni) end; -scan_string1([C|Cs], Line, no_col=Col, Q, Str, Wcs, Uni) when ?CHAR(C), - ?UNI255(C) -> - %% scan_string1(Cs, Line, Col, Q, Str, [C|Wcs], Uni); - scan_string1(Cs, Line, Col, Q, [C|Str], [C|Wcs], Uni); % UNI -scan_string1([C|Cs], Line, Col, Q, Str, Wcs, Uni) when ?CHAR(C), ?UNI255(C) -> - scan_string1(Cs, Line, Col+1, Q, [C|Str], [C|Wcs], Uni); -scan_string1([C|Cs], Line, Col, $', _Str, _Wcs, _Uni) when ?CHAR(C) -> %' UNI +scan_string1([C|Cs], Line, no_col=Col, Q, U, Str, Wcs, Uni) when ?CHAR(C), + ?UNI255(C) -> + %% scan_string1(Cs, Line, Col, Q, U, Str, [C|Wcs], Uni); + scan_string1(Cs, Line, Col, Q, U, [C|Str], [C|Wcs], Uni); % UNI +scan_string1([C|Cs], Line, Col, Q, U, Str, Wcs, Uni) when ?CHAR(C), ?UNI255(C) -> + scan_string1(Cs, Line, Col+1, Q, U, [C|Str], [C|Wcs], Uni); +scan_string1([C|Cs], Line, Col, _Q, false, _Str, _Wcs, _Uni) when ?CHAR(C) -> %' UNI {char_error,Cs,{illegal,character},Line,Col,incr_column(Col, 1)}; -scan_string1([C|Cs], Line, Col, Q, Str, Wcs, _Uni) when ?CHAR(C) -> % UNI - scan_string1(Cs, Line, incr_column(Col, 1), Q, [C|Str], [C|Wcs], C); -scan_string1([]=Cs, Line, Col, _Q, Str, Wcs, Uni) -> +scan_string1([C|Cs], Line, Col, Q, U, Str, Wcs, _Uni) when ?UNICODE(C) -> + scan_string1(Cs, Line, incr_column(Col, 1), Q, U, [C|Str], [C|Wcs], C); +scan_string1([C|Cs], Line, Col, _Q, _U, _Str, _Wcs, _Uni) when ?CHAR(C) -> % UNI + {char_error,Cs,{illegal,character},Line,Col,incr_column(Col, 1)}; +scan_string1([]=Cs, Line, Col, _Q, _U, Str, Wcs, Uni) -> {more,Cs,Line,Col,Str,Wcs,Uni}; -scan_string1(eof, Line, Col, _Q, _Str, Wcs, _Uni) -> +scan_string1(eof, Line, Col, _Q, _U, _Str, Wcs, _Uni) -> {error,Line,Col,lists:reverse(Wcs),eof}. -define(OCT(C), C >= $0, C =< $7). @@ -1072,8 +1112,10 @@ scan_escape([$\n=C|Cs], Col) -> scan_escape([C0|Cs], Col) when ?CHAR(C0), ?UNI255(C0) -> C = escape_char(C0), {C,?UNI_STR(Col, [C0]),Cs,incr_column(Col, 1)}; -scan_escape([C|Cs], Col) when ?CHAR(C) -> % UNI +scan_escape([C|Cs], Col) when ?UNICODE(C) -> {unicode,C,?UNI_STR(Col, [C]),Cs,incr_column(Col, 1)}; +scan_escape([C|Cs], Col) when ?CHAR(C) -> % UNI + {error,Cs,{illegal,character},incr_column(Col, 1)}; scan_escape([], _Col) -> more; scan_escape(eof, Col) -> @@ -1091,7 +1133,7 @@ scan_esc_end([$}|Cs], Col, Wcs0, B, Str0) -> case catch erlang:list_to_integer(Wcs, B) of Val when Val =< 16#FF -> {Val,?UNI_STR(Col, Str0++Wcs++[$}]),Cs,incr_column(Col, 1)}; - Val when Val =< 16#10FFFF -> + Val when ?UNICODE(Val) -> {unicode,Val,?UNI_STR(Col, Str0++Wcs++[$}]),Cs,incr_column(Col,1)}; _ -> {error,Cs,{illegal,character},incr_column(Col, 1)} @@ -1197,18 +1239,36 @@ float_end(Cs, St, Line, Col, Toks, Ncs0) -> scan_error({illegal,float}, Line, Col, Line, Ncol, Cs) end. -skip_comment([C|Cs], St, Line, Col, Toks, N) when C =/= $\n, ?CHAR(C) -> - skip_comment(Cs, St, Line, Col, Toks, N+1); -skip_comment([]=Cs, _St, Line, Col, Toks, N) -> - {more,{Cs,Col,Toks,Line,N,fun skip_comment/6}}; skip_comment(Cs, St, Line, Col, Toks, N) -> + skip_comment(Cs, St, Line, Col, Toks, N, St#erl_scan.unicode). + +skip_comment([C|Cs], St, Line, Col, Toks, N, U) when C =/= $\n, ?CHAR(C) -> + case ?UNI255(C) orelse U andalso ?UNICODE(C) of + true -> + skip_comment(Cs, St, Line, Col, Toks, N+1, U); + false -> + Ncol = incr_column(Col, N+1), + scan_error({illegal,character}, Line, Col, Line, Ncol, Cs) + end; +skip_comment([]=Cs, _St, Line, Col, Toks, N, _U) -> + {more,{Cs,Col,Toks,Line,N,fun skip_comment/6}}; +skip_comment(Cs, St, Line, Col, Toks, N, _U) -> scan1(Cs, St, Line, incr_column(Col, N), Toks). -scan_comment([C|Cs], St, Line, Col, Toks, Ncs) when C =/= $\n, ?CHAR(C) -> - scan_comment(Cs, St, Line, Col, Toks, [C|Ncs]); -scan_comment([]=Cs, _St, Line, Col, Toks, Ncs) -> +scan_comment(Cs, St, Line, Col, Toks, Ncs) -> + scan_comment(Cs, St, Line, Col, Toks, Ncs, St#erl_scan.unicode). + +scan_comment([C|Cs], St, Line, Col, Toks, Ncs, U) when C =/= $\n, ?CHAR(C) -> + case ?UNI255(C) orelse U andalso ?UNICODE(C) of + true -> + scan_comment(Cs, St, Line, Col, Toks, [C|Ncs], U); + false -> + Ncol = incr_column(Col, length(Ncs)+1), + scan_error({illegal,character}, Line, Col, Line, Ncol, Cs) + end; +scan_comment([]=Cs, _St, Line, Col, Toks, Ncs, _U) -> {more,{Cs,Col,Toks,Line,Ncs,fun scan_comment/6}}; -scan_comment(Cs, St, Line, Col, Toks, Ncs0) -> +scan_comment(Cs, St, Line, Col, Toks, Ncs0, _U) -> Ncs = lists:reverse(Ncs0), tok3(Cs, St, Line, Col, Toks, comment, Ncs, Ncs). diff --git a/lib/stdlib/src/escript.erl b/lib/stdlib/src/escript.erl index 498d850df3..99a9d138ac 100644 --- a/lib/stdlib/src/escript.erl +++ b/lib/stdlib/src/escript.erl @@ -710,7 +710,7 @@ epp_parse_file2(Epp, S, Forms, Parsed) -> epp_parse_file(Epp, S, [Form | Forms]) end; {error,{Ln,Mod,Args}} = Form -> - io:format("~s:~w: ~s\n", + io:format("~s:~w: ~ts\n", [S#state.file,Ln,Mod:format_error(Args)]), epp_parse_file(Epp, S#state{n_errors = S#state.n_errors + 1}, [Form | Forms]); {eof, _LastLine} = Eof -> @@ -780,10 +780,10 @@ report_errors(Errors) -> Errors). list_errors(F, [{Line,Mod,E}|Es]) -> - io:fwrite("~s:~w: ~s\n", [F,Line,Mod:format_error(E)]), + io:fwrite("~s:~w: ~ts\n", [F,Line,Mod:format_error(E)]), list_errors(F, Es); list_errors(F, [{Mod,E}|Es]) -> - io:fwrite("~s: ~s\n", [F,Mod:format_error(E)]), + io:fwrite("~s: ~ts\n", [F,Mod:format_error(E)]), list_errors(F, Es); list_errors(_F, []) -> ok. @@ -795,10 +795,10 @@ report_warnings(Ws0) -> lists:foreach(fun({_,Str}) -> io:put_chars(Str) end, Ws). format_message(F, [{Line,Mod,E}|Es]) -> - M = {{F,Line},io_lib:format("~s:~w: Warning: ~s\n", [F,Line,Mod:format_error(E)])}, + M = {{F,Line},io_lib:format("~s:~w: Warning: ~ts\n", [F,Line,Mod:format_error(E)])}, [M|format_message(F, Es)]; format_message(F, [{Mod,E}|Es]) -> - M = {none,io_lib:format("~s: Warning: ~s\n", [F,Mod:format_error(E)])}, + M = {none,io_lib:format("~s: Warning: ~ts\n", [F,Mod:format_error(E)])}, [M|format_message(F, Es)]; format_message(_, []) -> []. @@ -851,12 +851,27 @@ eval_exprs([E|Es], Bs0, Lf, Ef, RBs) -> eval_exprs(Es, Bs, Lf, Ef, RBs). format_exception(Class, Reason) -> + Enc = encoding(), + P = case Enc of + latin1 -> "P"; + _ -> "tP" + end, PF = fun(Term, I) -> - io_lib:format("~." ++ integer_to_list(I) ++ "P", [Term, 50]) + io_lib:format("~." ++ integer_to_list(I) ++ P, [Term, 50]) end, StackTrace = erlang:get_stacktrace(), StackFun = fun(M, _F, _A) -> (M =:= erl_eval) or (M =:= ?MODULE) end, - lib:format_exception(1, Class, Reason, StackTrace, StackFun, PF). + lib:format_exception(1, Class, Reason, StackTrace, StackFun, PF, Enc). + +encoding() -> + [{encoding, Encoding}] = enc(), + Encoding. + +enc() -> + case lists:keyfind(encoding, 1, io:getopts()) of + false -> [{encoding,latin1}]; % should never happen + Enc -> [Enc] + end. fatal(Str) -> throw(Str). diff --git a/lib/stdlib/src/io.erl b/lib/stdlib/src/io.erl index 9f65bbfa3a..ecf2aeb375 100644 --- a/lib/stdlib/src/io.erl +++ b/lib/stdlib/src/io.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -22,28 +22,28 @@ get_chars/2,get_chars/3,get_line/1,get_line/2, get_password/0, get_password/1, setopts/1, setopts/2, getopts/0, getopts/1]). --export([write/1,write/2,read/1,read/2,read/3]). +-export([write/1,write/2,read/1,read/2,read/3,read/4]). -export([columns/0,columns/1,rows/0,rows/1]). -export([fwrite/1,fwrite/2,fwrite/3,fread/2,fread/3, format/1,format/2,format/3]). --export([scan_erl_exprs/1,scan_erl_exprs/2,scan_erl_exprs/3, - scan_erl_form/1,scan_erl_form/2,scan_erl_form/3, +-export([scan_erl_exprs/1,scan_erl_exprs/2,scan_erl_exprs/3,scan_erl_exprs/4, + scan_erl_form/1,scan_erl_form/2,scan_erl_form/3,scan_erl_form/4, parse_erl_exprs/1,parse_erl_exprs/2,parse_erl_exprs/3, - parse_erl_form/1,parse_erl_form/2,parse_erl_form/3]). + parse_erl_exprs/4,parse_erl_form/1,parse_erl_form/2, + parse_erl_form/3,parse_erl_form/4]). -export([request/1,request/2,requests/1,requests/2]). --export_type([device/0, format/0]). +-export_type([device/0, format/0, server_no_data/0]). %%------------------------------------------------------------------------- -type device() :: atom() | pid(). -type prompt() :: atom() | string(). --type error_description() :: term(). % Whatever the io-server sends. --type request_error() :: {'error',error_description()}. +%% ErrorDescription is whatever the I/O-server sends. +-type server_no_data() :: {'error', ErrorDescription :: term()} | 'eof'. -%% XXX: Some uses of line() in this file may need to read erl_scan:location() --type line() :: pos_integer(). +-type location() :: erl_scan:location(). %%------------------------------------------------------------------------- @@ -73,9 +73,9 @@ o_request(Io, Request, Func) -> put_chars(Chars) -> put_chars(default_output(), Chars). --spec put_chars(IoDevice, IoData) -> 'ok' when +-spec put_chars(IoDevice, CharData) -> 'ok' when IoDevice :: device(), - IoData :: unicode:chardata(). + CharData :: unicode:chardata(). put_chars(Io, Chars) -> o_request(Io, {put_chars,unicode,Chars}, put_chars). @@ -124,7 +124,7 @@ rows(Io) -> {error,enotsup} end. --spec get_chars(Prompt, Count) -> Data | 'eof' when +-spec get_chars(Prompt, Count) -> Data | server_no_data() when Prompt :: prompt(), Count :: non_neg_integer(), Data :: [unicode:unicode_char()] | unicode:unicode_binary(). @@ -132,25 +132,23 @@ rows(Io) -> get_chars(Prompt, N) -> get_chars(default_input(), Prompt, N). --spec get_chars(IoDevice, Prompt, Count) -> Data | 'eof' | {error, Reason} when +-spec get_chars(IoDevice, Prompt, Count) -> Data | server_no_data() when IoDevice :: device(), Prompt :: prompt(), Count :: non_neg_integer(), - Reason :: term(), Data :: [unicode:unicode_char()] | unicode:unicode_binary(). get_chars(Io, Prompt, N) when is_integer(N), N >= 0 -> request(Io, {get_chars,unicode,Prompt,N}). --spec get_line(Prompt) -> Data | 'eof' | {'error', Reason} when +-spec get_line(Prompt) -> Data | server_no_data() when Prompt :: prompt(), - Reason :: term(), Data :: [unicode:unicode_char()] | unicode:unicode_binary(). get_line(Prompt) -> get_line(default_input(), Prompt). --spec get_line(IoDevice, Prompt) -> Data | 'eof' | {'error', term()} when +-spec get_line(IoDevice, Prompt) -> Data | server_no_data() when IoDevice :: device(), Prompt :: prompt(), Data :: [unicode:unicode_char()] | unicode:unicode_binary(). @@ -219,8 +217,9 @@ write(Io, Term) -> -spec read(Prompt) -> Result when Prompt :: prompt(), Result :: {'ok', Term :: term()} - | 'eof' - | {'error', ErrorInfo :: erl_scan:error_info()}. + | server_no_data() + | {'error', ErrorInfo}, + ErrorInfo :: erl_scan:error_info() | erl_parse:error_info(). % Read does not use get_until as erl_scan does not work with unicode % XXX:PaN fixme? @@ -231,8 +230,9 @@ read(Prompt) -> IoDevice :: device(), Prompt :: prompt(), Result :: {'ok', Term :: term()} - | 'eof' - | {'error', ErrorInfo :: erl_scan:error_info()}. + | server_no_data() + | {'error', ErrorInfo}, + ErrorInfo :: erl_scan:error_info() | erl_parse:error_info(). read(Io, Prompt) -> case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[1]}) of @@ -248,24 +248,41 @@ read(Io, Prompt) -> Other end. --spec read(IoDevice, Prompt, StartLine) -> Result when +-spec read(IoDevice, Prompt, StartLocation) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLocation :: location(), + Result :: {'ok', Term :: term(), EndLocation :: location()} + | {'eof', EndLocation :: location()} + | server_no_data() + | {'error', ErrorInfo, ErrorLocation :: location()}, + ErrorInfo :: erl_scan:error_info() | erl_parse:error_info(). + +read(Io, Prompt, Pos0) -> + read(Io, Prompt, Pos0, []). + +-spec read(IoDevice, Prompt, StartLocation, Options) -> Result when IoDevice :: device(), Prompt :: prompt(), - StartLine :: line(), - Result :: {'ok', Term :: term(), EndLine :: line()} - | {'eof', EndLine :: line()} - | {'error', ErrorInfo :: erl_scan:error_info(), ErrorLine :: line()}. - -read(Io, Prompt, StartLine) when is_integer(StartLine) -> - case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[StartLine]}) of - {ok,Toks,EndLine} -> + StartLocation :: location(), + Options :: erl_scan:options(), + Result :: {'ok', Term :: term(), EndLocation :: location()} + | {'eof', EndLocation :: location()} + | server_no_data() + | {'error', ErrorInfo, ErrorLocation :: location()}, + ErrorInfo :: erl_scan:error_info() | erl_parse:error_info(). + +read(Io, Prompt, Pos0, Options) -> + Args = [Pos0,Options], + case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,Args}) of + {ok,Toks,EndLocation} -> case erl_parse:parse_term(Toks) of - {ok,Term} -> {ok,Term,EndLine}; - {error,ErrorInfo} -> {error,ErrorInfo,EndLine} + {ok,Term} -> {ok,Term,EndLocation}; + {error,ErrorInfo} -> {error,ErrorInfo,EndLocation} end; - {error,_E,_EndLine} = Error -> + {error,_E,_EndLocation} = Error -> Error; - {eof,_EndLine} = Eof -> + {eof,_EndLocation} = Eof -> Eof; Other -> Other @@ -313,7 +330,9 @@ fread(Prompt, Format) -> IoDevice :: device(), Prompt :: prompt(), Format :: format(), - Result :: {'ok', Terms :: [term()]} | 'eof' | {'error', What :: term()}. + Result :: {'ok', Terms :: [term()]} + | {'error', FreadError :: io_lib:fread_error()} + | server_no_data(). fread(Io, Prompt, Format) -> case request(Io, {fread,Prompt,Format}) of @@ -348,7 +367,7 @@ format(Io, Format, Args) -> -spec scan_erl_exprs(Prompt) -> Result when Prompt :: prompt(), - Result :: erl_scan:tokens_result() | request_error(). + Result :: erl_scan:tokens_result() | server_no_data(). scan_erl_exprs(Prompt) -> scan_erl_exprs(default_input(), Prompt, 1). @@ -356,23 +375,33 @@ scan_erl_exprs(Prompt) -> -spec scan_erl_exprs(Device, Prompt) -> Result when Device :: device(), Prompt :: prompt(), - Result :: erl_scan:tokens_result() | request_error(). + Result :: erl_scan:tokens_result() | server_no_data(). scan_erl_exprs(Io, Prompt) -> scan_erl_exprs(Io, Prompt, 1). --spec scan_erl_exprs(Device, Prompt, StartLine) -> Result when +-spec scan_erl_exprs(Device, Prompt, StartLocation) -> Result when Device :: device(), Prompt :: prompt(), - StartLine :: line(), - Result :: erl_scan:tokens_result() | request_error(). + StartLocation :: location(), + Result :: erl_scan:tokens_result() | server_no_data(). scan_erl_exprs(Io, Prompt, Pos0) -> - request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}). + scan_erl_exprs(Io, Prompt, Pos0, []). + +-spec scan_erl_exprs(Device, Prompt, StartLocation, Options) -> Result when + Device :: device(), + Prompt :: prompt(), + StartLocation :: location(), + Options :: erl_scan:options(), + Result :: erl_scan:tokens_result() | server_no_data(). + +scan_erl_exprs(Io, Prompt, Pos0, Options) -> + request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0,Options]}). -spec scan_erl_form(Prompt) -> Result when Prompt :: prompt(), - Result :: erl_scan:tokens_result() | request_error(). + Result :: erl_scan:tokens_result() | server_no_data(). scan_erl_form(Prompt) -> scan_erl_form(default_input(), Prompt, 1). @@ -380,26 +409,41 @@ scan_erl_form(Prompt) -> -spec scan_erl_form(IoDevice, Prompt) -> Result when IoDevice :: device(), Prompt :: prompt(), - Result :: erl_scan:tokens_result() | request_error(). + Result :: erl_scan:tokens_result() | server_no_data(). scan_erl_form(Io, Prompt) -> scan_erl_form(Io, Prompt, 1). --spec scan_erl_form(IoDevice, Prompt, StartLine) -> Result when +-spec scan_erl_form(IoDevice, Prompt, StartLocation) -> Result when IoDevice :: device(), Prompt :: prompt(), - StartLine :: line(), - Result :: erl_scan:tokens_result() | request_error(). + StartLocation :: location(), + Result :: erl_scan:tokens_result() | server_no_data(). scan_erl_form(Io, Prompt, Pos0) -> - request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}). + scan_erl_form(Io, Prompt, Pos0, []). + +-spec scan_erl_form(IoDevice, Prompt, StartLocation, Options) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLocation :: location(), + Options :: erl_scan:options(), + Result :: erl_scan:tokens_result() | server_no_data(). + +scan_erl_form(Io, Prompt, Pos0, Options) -> + request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0,Options]}). %% Parsing Erlang code. --type parse_ret() :: {'ok', ExprList :: erl_parse:abstract_expr(), EndLine :: line()} - | {'eof', EndLine :: line()} - | {'error', ErrorInfo :: erl_scan:error_info(), ErrorLine :: line()} - | request_error(). +-type parse_ret() :: {'ok', + ExprList :: erl_parse:abstract_expr(), + EndLocation :: location()} + | {'eof', EndLocation :: location()} + | {'error', + ErrorInfo :: erl_scan:error_info() + | erl_parse:error_info(), + ErrorLocation :: location()} + | server_no_data(). -spec parse_erl_exprs(Prompt) -> Result when Prompt :: prompt(), @@ -416,14 +460,24 @@ parse_erl_exprs(Prompt) -> parse_erl_exprs(Io, Prompt) -> parse_erl_exprs(Io, Prompt, 1). --spec parse_erl_exprs(IoDevice, Prompt, StartLine) -> Result when +-spec parse_erl_exprs(IoDevice, Prompt, StartLocation) -> Result when IoDevice :: device(), Prompt :: prompt(), - StartLine :: line(), + StartLocation :: location(), Result :: parse_ret(). parse_erl_exprs(Io, Prompt, Pos0) -> - case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}) of + parse_erl_exprs(Io, Prompt, Pos0, []). + +-spec parse_erl_exprs(IoDevice, Prompt, StartLocation, Options) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLocation :: location(), + Options :: erl_scan:options(), + Result :: parse_ret(). + +parse_erl_exprs(Io, Prompt, Pos0, Options) -> + case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0,Options]}) of {ok,Toks,EndPos} -> case erl_parse:parse_exprs(Toks) of {ok,Exprs} -> {ok,Exprs,EndPos}; @@ -433,10 +487,15 @@ parse_erl_exprs(Io, Prompt, Pos0) -> Other end. --type parse_form_ret() :: {'ok', AbsForm :: erl_parse:abstract_form(), EndLine :: line()} - | {'eof', EndLine :: line()} - | {'error', ErrorInfo :: erl_scan:error_info(), ErrorLine :: line()} - | request_error(). +-type parse_form_ret() :: {'ok', + AbsForm :: erl_parse:abstract_form(), + EndLocation :: location()} + | {'eof', EndLocation :: location()} + | {'error', + ErrorInfo :: erl_scan:error_info() + | erl_parse:error_info(), + ErrorLocation :: location()} + | server_no_data(). -spec parse_erl_form(Prompt) -> Result when Prompt :: prompt(), @@ -453,14 +512,25 @@ parse_erl_form(Prompt) -> parse_erl_form(Io, Prompt) -> parse_erl_form(Io, Prompt, 1). --spec parse_erl_form(IoDevice, Prompt, StartLine) -> Result when +-spec parse_erl_form(IoDevice, Prompt, StartLocation) -> Result when IoDevice :: device(), Prompt :: prompt(), - StartLine :: line(), + StartLocation :: location(), Result :: parse_form_ret(). parse_erl_form(Io, Prompt, Pos0) -> - case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,[Pos0]}) of + parse_erl_form(Io, Prompt, Pos0, []). + +-spec parse_erl_form(IoDevice, Prompt, StartLocation, Options) -> Result when + IoDevice :: device(), + Prompt :: prompt(), + StartLocation :: location(), + Options :: erl_scan:options(), + Result :: parse_form_ret(). + +parse_erl_form(Io, Prompt, Pos0, Options) -> + Args = [Pos0, Options], + case request(Io, {get_until,unicode,Prompt,erl_scan,tokens,Args}) of {ok,Toks,EndPos} -> case erl_parse:parse_form(Toks) of {ok,Exprs} -> {ok,Exprs,EndPos}; diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl index 513d904c39..44c1d2132a 100644 --- a/lib/stdlib/src/io_lib.erl +++ b/lib/stdlib/src/io_lib.erl @@ -62,9 +62,12 @@ -export([fwrite/2,fread/2,fread/3,format/2]). -export([print/1,print/4,indentation/2]). --export([write/1,write/2,write/3,nl/0,format_prompt/1]). +-export([write/1,write/2,write/3,nl/0,format_prompt/1,format_prompt/2]). -export([write_atom/1,write_string/1,write_string/2,write_unicode_string/1, - write_unicode_string/2, write_char/1, write_unicode_char/1]). + write_unicode_string/2, write_char/1, write_unicode_char/1]). + +-export([write_unicode_string_as_latin1/1, write_unicode_string_as_latin1/2, + write_unicode_char_as_latin1/1]). -export([quote_atom/2, char_list/1, unicode_char_list/1, deep_char_list/1, deep_unicode_char_list/1, @@ -75,11 +78,14 @@ collect_line/2, collect_line/3, collect_line/4, get_until/3, get_until/4]). --export_type([chars/0, continuation/0]). +-export_type([chars/0, unicode_chars/0, unicode_string/0, continuation/0, + fread_error/0]). %%---------------------------------------------------------------------- -type chars() :: [char() | chars()]. +-type unicode_chars() :: [unicode:unicode_char() | unicode_chars()]. +-type unicode_string() :: [unicode:unicode_char()]. -type depth() :: -1 | non_neg_integer(). -opaque continuation() :: {Format :: string(), @@ -87,6 +93,16 @@ Nchars :: non_neg_integer(), Results :: [term()]}. +-type fread_error() :: 'atom' + | 'based' + | 'character' + | 'float' + | 'format' + | 'input' + | 'integer' + | 'string' + | 'unsigned'. + %%---------------------------------------------------------------------- %% Interface calls to sub-modules. @@ -107,7 +123,7 @@ fwrite(Format, Args) -> | {'more', RestFormat :: string(), Nchars :: non_neg_integer(), InputStack :: chars()} - | {'error', What :: term()}. + | {'error', What :: fread_error()}. fread(Chars, Format) -> io_lib_fread:fread(Chars, Format). @@ -120,7 +136,7 @@ fread(Chars, Format) -> | {'done', Result, LeftOverChars :: string()}, Result :: {'ok', InputList :: [term()]} | 'eof' - | {'error', What :: term()}. + | {'error', What :: fread_error()}. fread(Cont, Chars, Format) -> io_lib_fread:fread(Cont, Chars, Format). @@ -162,27 +178,34 @@ indentation(Chars, Current) -> %% Format an IO-request prompt (handles formatting errors safely). -%% Atoms, binaries, and iolists can be used as-is, and will be -%% printed without any additional quotes. -%% Note that the output is a deep string, and not an iolist (i.e., -%% it may be deep, but never contains binaries, due to the "~s"). +%% Atoms, binaries, and iolists (or unicode:charlist()) can be used +%% as-is, and will be printed without any additional quotes. -spec format_prompt(term()) -> chars(). -format_prompt({format,Format,Args}) -> - format_prompt(Format,Args); -format_prompt(Prompt) - when is_list(Prompt); is_atom(Prompt); is_binary(Prompt) -> - format_prompt("~ts", [Prompt]); format_prompt(Prompt) -> - format_prompt("~tp", [Prompt]). + format_prompt(Prompt, latin1). + +-spec format_prompt(term(), atom()) -> chars(). + +format_prompt({format,Format,Args}, _Encoding) -> + do_format_prompt(Format, Args); +format_prompt(Prompt, Encoding) + when is_list(Prompt); is_atom(Prompt); is_binary(Prompt) -> + do_format_prompt(add_modifier(Encoding, "s"), [Prompt]); +format_prompt(Prompt, Encoding) -> + do_format_prompt(add_modifier(Encoding, "p"), [Prompt]). -format_prompt(Format, Args) -> +do_format_prompt(Format, Args) -> case catch io_lib:format(Format, Args) of {'EXIT',_} -> "???"; List -> List end. +add_modifier(latin1, C) -> + "~"++C; +add_modifier(_, C) -> + "~t"++C. %% write(Term) %% write(Term, Depth) @@ -330,11 +353,32 @@ write_string(S) -> write_string(S, Q) -> [Q|write_string1(latin1, S, Q)]. +%%% There are two functions to write Unicode strings: +%%% - they both escape control characters < 160; +%%% - write_unicode_string() never escapes characters >= 160; +%%% - write_unicode_string_as_latin1() also escapes characters >= 255. + +-spec write_unicode_string(UnicodeString) -> unicode_string() when + UnicodeString :: unicode_string(). + write_unicode_string(S) -> write_unicode_string(S, $"). %" +-spec write_unicode_string(unicode_string(), char()) -> unicode_string(). + write_unicode_string(S, Q) -> - [Q|write_string1(unicode, S, Q)]. + [Q|write_string1(unicode_as_unicode, S, Q)]. + +-spec write_unicode_string_as_latin1(UnicodeString) -> string() when + UnicodeString :: unicode_string(). + +write_unicode_string_as_latin1(S) -> + write_unicode_string_as_latin1(S, $"). %" + +-spec write_unicode_string_as_latin1(unicode_string(), char()) -> string(). + +write_unicode_string_as_latin1(S, Q) -> + [Q|write_string1(unicode_as_latin1, S, Q)]. write_string1(_,[], Q) -> [Q]; @@ -347,7 +391,11 @@ string_char(_,C, _, Tail) when C >= $\s, C =< $~ -> [C|Tail]; string_char(latin1,C, _, Tail) when C >= $\240, C =< $\377 -> [C|Tail]; -string_char(unicode,C, _, Tail) when C >= $\240 -> +string_char(unicode_as_unicode,C, _, Tail) when C >= $\240 -> + [C|Tail]; +string_char(unicode_as_latin1,C, _, Tail) when C >= $\240, C =< $\377 -> + [C|Tail]; +string_char(unicode_as_latin1,C, _, Tail) when C >= $\377 -> "\\x{"++erlang:integer_to_list(C, 16)++"}"++Tail; string_char(_,$\n, _, Tail) -> [$\\,$n|Tail]; %\n = LF string_char(_,$\r, _, Tail) -> [$\\,$r|Tail]; %\r = CR @@ -374,10 +422,22 @@ write_char($\s) -> "$\\s"; %Must special case this. write_char(C) when is_integer(C), C >= $\000, C =< $\377 -> [$$|string_char(latin1,C, -1, [])]. -write_unicode_char(Ch) when Ch =< 255 -> - write_char(Ch); -write_unicode_char(Uni) -> - [$$|string_char(unicode,Uni, -1, [])]. +%%% There are two functions to write a Unicode character: +%%% - they both escape control characters < 160; +%%% - write_unicode_char() never escapes characters >= 160; +%%% - write_unicode_char_as_latin1() also escapes characters >= 255. + +-spec write_unicode_char(UnicodeChar) -> unicode_string() when + UnicodeChar :: unicode:unicode_char(). + +write_unicode_char(Uni) when is_integer(Uni), Uni >= $\000 -> + [$$|string_char(unicode_as_unicode,Uni, -1, [])]. + +-spec write_unicode_char_as_latin1(UnicodeChar) -> string() when + UnicodeChar :: unicode:unicode_char(). + +write_unicode_char_as_latin1(Uni) when is_integer(Uni), Uni >= $\000 -> + [$$|string_char(unicode_as_latin1,Uni, -1, [])]. %% char_list(CharList) %% deep_char_list(CharList) @@ -392,7 +452,8 @@ char_list([C|Cs]) when is_integer(C), C >= $\000, C =< $\377 -> char_list([]) -> true; char_list(_) -> false. %Everything else is false --spec unicode_char_list(term()) -> boolean(). +-spec unicode_char_list(Term) -> boolean() when + Term :: term(). unicode_char_list([C|Cs]) when is_integer(C), C >= 0, C < 16#D800; is_integer(C), C > 16#DFFF, C < 16#FFFE; @@ -417,7 +478,8 @@ deep_char_list([], []) -> true; deep_char_list(_, _More) -> %Everything else is false false. --spec deep_unicode_char_list(term()) -> boolean(). +-spec deep_unicode_char_list(Term) -> boolean() when + Term :: term(). deep_unicode_char_list(Cs) -> deep_unicode_char_list(Cs, []). @@ -462,7 +524,8 @@ printable_list(_) -> false. %Everything else is false %% Everything that is not a control character and not invalid unicode %% will be considered printable. --spec printable_unicode_list(term()) -> boolean(). +-spec printable_unicode_list(Term) -> boolean() when + Term :: term(). printable_unicode_list([C|Cs]) when is_integer(C), C >= $\040, C =< $\176 -> printable_unicode_list(Cs); diff --git a/lib/stdlib/src/io_lib_format.erl b/lib/stdlib/src/io_lib_format.erl index 49a00a4ec7..5680f83ab6 100644 --- a/lib/stdlib/src/io_lib_format.erl +++ b/lib/stdlib/src/io_lib_format.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -22,7 +22,7 @@ -export([fwrite/2,fwrite_g/1,indentation/2]). -%% fwrite(Format, ArgList) -> [Char]. +%% fwrite(Format, ArgList) -> [unicode:unicode:char()]. %% Format the arguments in ArgList after string Format. Just generate %% an error if there is an error in the arguments. %% @@ -133,7 +133,7 @@ pcount([{$P,_As,_F,_Ad,_P,_Pad,_Enc}|Cs], Acc) -> pcount(Cs, Acc+1); pcount([_|Cs], Acc) -> pcount(Cs, Acc); pcount([], Acc) -> Acc. -%% build([Control], Pc, Indentation) -> [Char]. +%% build([Control], Pc, Indentation) -> [unicode:unicode_char()]. %% Interpret the control structures. Count the number of print %% remaining and only calculate indentation when necessary. Must also %% be smart when calculating indentation for characters in format. @@ -154,7 +154,7 @@ decr_pc($p, Pc) -> Pc - 1; decr_pc($P, Pc) -> Pc - 1; decr_pc(_, Pc) -> Pc. -%% indentation([Char], Indentation) -> Indentation. +%% indentation([unicode:unicode_char()], Indentation) -> Indentation. %% Calculate the indentation of the end of a string given its start %% indentation. We assume tabs at 8 cols. @@ -167,19 +167,19 @@ indentation([C|Cs], I) -> indentation([], I) -> I. %% control(FormatChar, [Argument], FieldWidth, Adjust, Precision, PadChar, -%% Indentation) -> -%% [Char] +%% Encoding, Indentation) -> +%% [unicode:unicode_char()] %% This is the main dispatch function for the various formatting commands. %% Field widths and precisions have already been calculated. control($w, [A], F, Adj, P, Pad, _Enc,_I) -> term(io_lib:write(A, -1), F, Adj, P, Pad); -control($p, [A], F, Adj, P, Pad, _Enc, I) -> - print(A, -1, F, Adj, P, Pad, I); +control($p, [A], F, Adj, P, Pad, Enc, I) -> + print(A, -1, F, Adj, P, Pad, Enc, I); control($W, [A,Depth], F, Adj, P, Pad, _Enc, _I) when is_integer(Depth) -> term(io_lib:write(A, Depth), F, Adj, P, Pad); -control($P, [A,Depth], F, Adj, P, Pad, _Enc, I) when is_integer(Depth) -> - print(A, Depth, F, Adj, P, Pad, I); +control($P, [A,Depth], F, Adj, P, Pad, Enc, I) when is_integer(Depth) -> + print(A, Depth, F, Adj, P, Pad, Enc, I); control($s, [A], F, Adj, P, Pad, _Enc, _I) when is_atom(A) -> string(atom_to_list(A), F, Adj, P, Pad); control($s, [L0], F, Adj, P, Pad, latin1, _I) -> @@ -187,6 +187,7 @@ control($s, [L0], F, Adj, P, Pad, latin1, _I) -> string(L, F, Adj, P, Pad); control($s, [L0], F, Adj, P, Pad, unicode, _I) -> L = unicode:characters_to_list(L0), + true = is_list(L), uniconv(string(L, F, Adj, P, Pad)); control($e, [A], F, Adj, P, Pad, _Enc, _I) when is_float(A) -> fwrite_e(A, F, Adj, P, Pad); @@ -256,13 +257,17 @@ term(T, F, Adj, P0, Pad) -> adjust(T, chars(Pad, F-L), Adj) end. -%% print(Term, Depth, Field, Adjust, Precision, PadChar, Indentation) +%% print(Term, Depth, Field, Adjust, Precision, PadChar, Encoding, +%% Indentation) %% Print a term. -print(T, D, none, Adj, P, Pad, I) -> print(T, D, 80, Adj, P, Pad, I); -print(T, D, F, Adj, none, Pad, I) -> print(T, D, F, Adj, I+1, Pad, I); -print(T, D, F, right, P, _Pad, _I) -> - io_lib_pretty:print(T, P, F, D). +print(T, D, none, Adj, P, Pad, E, I) -> print(T, D, 80, Adj, P, Pad, E, I); +print(T, D, F, Adj, none, Pad, E, I) -> print(T, D, F, Adj, I+1, Pad, E, I); +print(T, D, F, right, P, _Pad, latin1, _I) -> + io_lib_pretty:print(T, P, F, D); +print(T, D, F, right, P, _Pad, Enc, _I) -> + Options = [{column, P}, {line_length, F}, {depth, D}, {encoding, Enc}], + io_lib_pretty:print(T, Options). %% fwrite_e(Float, Field, Adjust, Precision, PadChar) @@ -608,7 +613,7 @@ prefixed_integer(Int, F, Adj, Base, Pad, Prefix, Lowercase) term([Prefix|S], F, Adj, none, Pad) end. -%% char(Char, Field, Adjust, Precision, PadChar) -> [Char]. +%% char(Char, Field, Adjust, Precision, PadChar) -> [unicode:unicode_char()]. char(C, none, _Adj, none, _Pad) -> [C]; char(C, F, _Adj, none, _Pad) -> chars(C, F); diff --git a/lib/stdlib/src/io_lib_fread.erl b/lib/stdlib/src/io_lib_fread.erl index ded1346097..84d4b8bba0 100644 --- a/lib/stdlib/src/io_lib_fread.erl +++ b/lib/stdlib/src/io_lib_fread.erl @@ -43,7 +43,7 @@ | {'done', Result, LeftOverChars :: string()}, Result :: {'ok', InputList :: io_lib:chars()} | 'eof' - | {'error', What :: term()}. + | {'error', What :: io_lib:fread_error()}. fread([], Chars, Format) -> %%io:format("FREAD: ~w `~s'~n", [Format,Chars]), diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl index 169410796b..99ad281a9b 100644 --- a/lib/stdlib/src/io_lib_pretty.erl +++ b/lib/stdlib/src/io_lib_pretty.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2009. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -33,43 +33,76 @@ %% print(Term, Column, LineLength, Depth) -> [Chars] %% Depth = -1 gives unlimited print depth. Use io_lib:write for atomic terms. +-spec print(term()) -> io_lib:chars(). + print(Term) -> print(Term, 1, 80, -1). %% print(Term, RecDefFun) -> [Chars] %% print(Term, Depth, RecDefFun) -> [Chars] %% RecDefFun = fun(Tag, NoFields) -> [FieldTag] | no -%% Used by the shell for printing records. +%% Used by the shell for printing records and for Unicode. + +-type rec_print_fun() :: fun((Tag :: atom(), NFields :: non_neg_integer()) -> + no | [FieldName :: atom()]). +-type column() :: integer(). +-type line_length() :: pos_integer(). +-type depth() :: integer(). +-type max_chars() :: integer(). + +-type chars() :: io_lib:chars(). +-type unicode_chars() :: io_lib:unicode_chars(). +-type option() :: {column, column()} + | {line_length, line_length()} + | {depth, depth()} + | {max_chars, max_chars()} + | {record_print_fun, rec_print_fun()} + | {encoding, latin1 | utf8 | unicode}. +-type options() :: [option()]. + +-spec print(term(), rec_print_fun()) -> chars() | unicode_chars(); + (term(), options()) -> chars() | unicode_chars(). + +print(Term, Options) when is_list(Options) -> + Col = proplists:get_value(column, Options, 1), + Ll = proplists:get_value(line_length, Options, 80), + D = proplists:get_value(depth, Options, -1), + M = proplists:get_value(max_chars, Options, -1), + RecDefFun = proplists:get_value(record_print_fun, Options, no_fun), + Encoding = proplists:get_value(encoding, Options, epp:default_encoding()), + print(Term, Col, Ll, D, M, RecDefFun, Encoding); print(Term, RecDefFun) -> print(Term, -1, RecDefFun). +-spec print(term(), depth(), rec_print_fun()) -> chars() | unicode_chars(). + print(Term, Depth, RecDefFun) -> print(Term, 1, 80, Depth, RecDefFun). +-spec print(term(), column(), line_length(), depth()) -> + chars() | unicode_chars(). + print(Term, Col, Ll, D) -> - print(Term, Col, Ll, D, _M=-1, no_fun). + print(Term, Col, Ll, D, _M=-1, no_fun, latin1). +-spec print(term(), column(), line_length(), depth(), rec_print_fun()) -> + chars() | unicode_chars(). print(Term, Col, Ll, D, RecDefFun) -> print(Term, Col, Ll, D, _M=-1, RecDefFun). -print(_, _, _, 0, _M, _RF) -> "..."; -print(Term, Col, Ll, D, M, RecDefFun) when Col =< 0 -> - print(Term, 1, Ll, D, M, RecDefFun); -print(Term, Col, Ll, D, M0, RecDefFun) when is_tuple(Term); - is_list(Term) -> - If = {_S, Len} = print_length(Term, D, RecDefFun), - M = max_cs(M0, Len), - if - Len < Ll - Col, Len =< M -> - write(If); - true -> - TInd = while_fail([-1, 4], - fun(I) -> cind(If, Col, Ll, M, I, 0, 0) end, - 1), - pp(If, Col, Ll, M, TInd, indent(Col), 0, 0) - end; -print(<<_/bitstring>>=Term, Col, Ll, D, M0, RecDefFun) -> - If = {_S, Len} = print_length(Term, D, RecDefFun), +-spec print(term(), column(), line_length(), depth(), max_chars(), + rec_print_fun()) -> chars() | unicode_chars(). + +print(Term, Col, Ll, D, M, RecDefFun) -> + print(Term, Col, Ll, D, M, RecDefFun, latin1). + +print(_, _, _, 0, _M, _RF, _Enc) -> "..."; +print(Term, Col, Ll, D, M, RecDefFun, Enc) when Col =< 0 -> + print(Term, 1, Ll, D, M, RecDefFun, Enc); +print(Term, Col, Ll, D, M0, RecDefFun, Enc) when is_tuple(Term); + is_list(Term); + is_bitstring(Term) -> + If = {_S, Len} = print_length(Term, D, RecDefFun, Enc), M = max_cs(M0, Len), if Len < Ll - Col, Len =< M -> @@ -80,7 +113,7 @@ print(<<_/bitstring>>=Term, Col, Ll, D, M0, RecDefFun) -> 1), pp(If, Col, Ll, M, TInd, indent(Col), 0, 0) end; -print(Term, _Col, _Ll, _D, _M, _RF) -> +print(Term, _Col, _Ll, _D, _M, _RF, _Enc) -> io_lib:write(Term). %%% @@ -294,50 +327,56 @@ write_tail(E, S) -> %% counted but need to be added later. %% D =/= 0 -print_length([], _D, _RF) -> +print_length([], _D, _RF, _Enc) -> {"[]", 2}; -print_length({}, _D, _RF) -> +print_length({}, _D, _RF, _Enc) -> {"{}", 2}; -print_length(List, D, RF) when is_list(List) -> - case printable_list(List, D) of +print_length(List, D, RF, Enc) when is_list(List) -> + case printable_list(List, D, Enc) of true -> - S = io_lib:write_string(List, $"), %" + S = write_string(List, Enc), {S, length(S)}; %% Truncated lists could break some existing code. % {true, Prefix} -> - % S = io_lib:write_string(Prefix, $"), %" + % S = write_string(Prefix, Enc), % {[S | "..."], 3 + length(S)}; false -> - print_length_list(List, D, RF) + print_length_list(List, D, RF, Enc) end; -print_length(Fun, _D, _RF) when is_function(Fun) -> +print_length(Fun, _D, _RF, _Enc) when is_function(Fun) -> S = io_lib:write(Fun), {S, iolist_size(S)}; -print_length(R, D, RF) when is_atom(element(1, R)), - is_function(RF) -> +print_length(R, D, RF, Enc) when is_atom(element(1, R)), + is_function(RF) -> case RF(element(1, R), tuple_size(R) - 1) of no -> - print_length_tuple(R, D, RF); + print_length_tuple(R, D, RF, Enc); RDefs -> - print_length_record(R, D, RF, RDefs) + print_length_record(R, D, RF, RDefs, Enc) end; -print_length(Tuple, D, RF) when is_tuple(Tuple) -> - print_length_tuple(Tuple, D, RF); -print_length(<<>>, _D, _RF) -> +print_length(Tuple, D, RF, Enc) when is_tuple(Tuple) -> + print_length_tuple(Tuple, D, RF, Enc); +print_length(<<>>, _D, _RF, _Enc) -> {"<<>>", 4}; -print_length(<<_/bitstring>>, 1, _RF) -> +print_length(<<_/bitstring>>, 1, _RF, _Enc) -> {"<<...>>", 7}; -print_length(<<_/bitstring>>=Bin, D, _RF) -> +print_length(<<_/bitstring>>=Bin, D, _RF, Enc) -> case bit_size(Bin) rem 8 of 0 -> D1 = D - 1, - case printable_bin(Bin, D1) of - List when is_list(List) -> - S = io_lib:write_string(List, $"), + case printable_bin(Bin, D1, Enc) of + {true, List} when is_list(List) -> + S = io_lib:write_string(List, $"), %" {[$<,$<,S,$>,$>], 4 + length(S)}; - {true, Prefix} -> - S = io_lib:write_string(Prefix, $"), - {[$<,$<, S | "...>>"], 4 + length(S)}; + {false, List} when is_list(List) -> + S = io_lib:write_unicode_string(List, $"), %" + {[$<,$<,S,"/utf8>>"], 9 + length(S)}; + {true, true, Prefix} -> + S = io_lib:write_string(Prefix, $"), %" + {[$<,$<, S | "...>>"], 7 + length(S)}; + {false, true, Prefix} -> + S = io_lib:write_unicode_string(Prefix, $"), %" + {[$<,$<, S | "/utf8...>>"], 12 + length(S)}; false -> S = io_lib:write(Bin, D), {{bin,S}, iolist_size(S)} @@ -346,51 +385,51 @@ print_length(<<_/bitstring>>=Bin, D, _RF) -> S = io_lib:write(Bin, D), {{bin,S}, iolist_size(S)} end; -print_length(Term, _D, _RF) -> +print_length(Term, _D, _RF, _Enc) -> S = io_lib:write(Term), {S, iolist_size(S)}. -print_length_tuple(_Tuple, 1, _RF) -> +print_length_tuple(_Tuple, 1, _RF, _Enc) -> {"{...}", 5}; -print_length_tuple(Tuple, D, RF) -> - L = print_length_list1(tuple_to_list(Tuple), D, RF), +print_length_tuple(Tuple, D, RF, Enc) -> + L = print_length_list1(tuple_to_list(Tuple), D, RF, Enc), IsTagged = is_atom(element(1, Tuple)) and (tuple_size(Tuple) > 1), {{tuple,IsTagged,L}, list_length(L, 2)}. -print_length_record(_Tuple, 1, _RF, _RDefs) -> +print_length_record(_Tuple, 1, _RF, _RDefs, _Enc) -> {"{...}", 5}; -print_length_record(Tuple, D, RF, RDefs) -> +print_length_record(Tuple, D, RF, RDefs, Enc) -> Name = [$# | io_lib:write_atom(element(1, Tuple))], NameL = length(Name), - L = print_length_fields(RDefs, D - 1, tl(tuple_to_list(Tuple)), RF), + L = print_length_fields(RDefs, D - 1, tl(tuple_to_list(Tuple)), RF, Enc), {{record, [{Name,NameL} | L]}, list_length(L, NameL + 2)}. -print_length_fields([], _D, [], _RF) -> +print_length_fields([], _D, [], _RF, _Enc) -> []; -print_length_fields(_, 1, _, _RF) -> +print_length_fields(_, 1, _, _RF, _Enc) -> {dots, 3}; -print_length_fields([Def | Defs], D, [E | Es], RF) -> - [print_length_field(Def, D - 1, E, RF) | - print_length_fields(Defs, D - 1, Es, RF)]. +print_length_fields([Def | Defs], D, [E | Es], RF, Enc) -> + [print_length_field(Def, D - 1, E, RF, Enc) | + print_length_fields(Defs, D - 1, Es, RF, Enc)]. -print_length_field(Def, D, E, RF) -> +print_length_field(Def, D, E, RF, Enc) -> Name = io_lib:write_atom(Def), - {S, L} = print_length(E, D, RF), + {S, L} = print_length(E, D, RF, Enc), NameL = length(Name) + 3, {{field, Name, NameL, {S, L}}, NameL + L}. -print_length_list(List, D, RF) -> - L = print_length_list1(List, D, RF), +print_length_list(List, D, RF, Enc) -> + L = print_length_list1(List, D, RF, Enc), {{list, L}, list_length(L, 2)}. -print_length_list1([], _D, _RF) -> +print_length_list1([], _D, _RF, _Enc) -> []; -print_length_list1(_, 1, _RF) -> +print_length_list1(_, 1, _RF, _Enc) -> {dots, 3}; -print_length_list1([E | Es], D, RF) -> - [print_length(E, D - 1, RF) | print_length_list1(Es, D - 1, RF)]; -print_length_list1(E, D, RF) -> - print_length(E, D - 1, RF). +print_length_list1([E | Es], D, RF, Enc) -> + [print_length(E, D - 1, RF, Enc) | print_length_list1(Es, D - 1, RF, Enc)]; +print_length_list1(E, D, RF, Enc) -> + print_length(E, D - 1, RF, Enc). list_length([], Acc) -> Acc; @@ -409,16 +448,16 @@ list_length_tail({_, Len}, Acc) -> %% ?CHARS printable characters has depth 1. -define(CHARS, 4). -printable_list(L, D) when D < 0 -> - io_lib:printable_list(L); -printable_list(_L, 1) -> +printable_list(_L, 1, _Enc) -> false; -printable_list(L, _D) -> - io_lib:printable_list(L). +printable_list(L, _D, latin1) -> + io_lib:printable_list(L); +printable_list(L, _D, _Uni) -> + io_lib:printable_unicode_list(L). %% Truncated lists could break some existing code. -% printable_list(L, D) -> +% printable_list(L, D, Enc) when D >= 0 -> % Len = ?CHARS * (D - 1), -% case printable_list1(L, Len) of +% case printable_list1(L, Len, Enc) of % all -> % true; % N when is_integer(N), Len - N >= D - 1 -> @@ -428,32 +467,41 @@ printable_list(L, _D) -> % false % end. -printable_bin(Bin, D) when D >= 0, ?CHARS * D =< byte_size(Bin) -> - printable_bin(Bin, erlang:min(?CHARS * D, byte_size(Bin)), D); -printable_bin(Bin, D) -> - printable_bin(Bin, byte_size(Bin), D). +printable_bin(Bin, D, Enc) when D >= 0, ?CHARS * D =< byte_size(Bin) -> + printable_bin(Bin, erlang:min(?CHARS * D, byte_size(Bin)), D, Enc); +printable_bin(Bin, D, Enc) -> + printable_bin(Bin, byte_size(Bin), D, Enc). -printable_bin(Bin, Len, D) -> +printable_bin(Bin, Len, D, latin1) -> N = erlang:min(20, Len), L = binary_to_list(Bin, 1, N), case printable_list1(L, N) of all when N =:= byte_size(Bin) -> - L; - all when N =:= Len -> % N < byte_size(Bin) {true, L}; + all when N =:= Len -> % N < byte_size(Bin) + {true, true, L}; all -> case printable_bin1(Bin, 1 + N, Len - N) of 0 when byte_size(Bin) =:= Len -> - binary_to_list(Bin); + {true, binary_to_list(Bin)}; NC when D > 0, Len - NC >= D -> - {true, binary_to_list(Bin, 1, Len - NC)}; + {true, true, binary_to_list(Bin, 1, Len - NC)}; NC when is_integer(NC) -> false end; NC when is_integer(NC), D > 0, N - NC >= D -> - {true, binary_to_list(Bin, 1, N - NC)}; + {true, true, binary_to_list(Bin, 1, N - NC)}; NC when is_integer(NC) -> false + end; +printable_bin(Bin, Len, D, _Uni) -> + case printable_unicode(Bin, Len, []) of + {_, <<>>, L} -> + {byte_size(Bin) =:= length(L), L}; + {NC, Bin1, L} when D > 0, Len - NC >= D -> + {byte_size(Bin)-byte_size(Bin1) =:= length(L), true, L}; + {_NC, _Bin, _L} -> + false end. printable_bin1(_Bin, _Start, 0) -> @@ -484,6 +532,16 @@ printable_list1([$\e | Cs], N) -> printable_list1(Cs, N - 1); printable_list1([], _) -> all; printable_list1(_, N) -> N. +printable_unicode(<<C/utf8, R/binary>>, I, L) when I > 0 -> + printable_unicode(R, I - 1, [C | L]); +printable_unicode(Bin, I, L) -> + {I, Bin, lists:reverse(L)}. + +write_string(S, latin1) -> + io_lib:write_string(S, $"); %" +write_string(S, _Uni) -> + io_lib:write_unicode_string(S, $"). %" + %% Throw 'no_good' if the indentation exceeds half the line length %% unless there is room for M characters on the line. diff --git a/lib/stdlib/src/lib.erl b/lib/stdlib/src/lib.erl index cf4b87d7eb..b2ce2a5a8f 100644 --- a/lib/stdlib/src/lib.erl +++ b/lib/stdlib/src/lib.erl @@ -21,8 +21,9 @@ -export([flush_receive/0, error_message/2, progname/0, nonl/1, send/2, sendw/2, eval_str/1]). --export([format_exception/6, format_stacktrace/4, - format_call/4, format_fun/1]). +-export([format_exception/6, format_exception/7, + format_stacktrace/4, format_stacktrace/5, + format_call/4, format_call/5, format_fun/1]). -spec flush_receive() -> 'ok'. @@ -128,32 +129,49 @@ all_white(_) -> false. %% as indentation whenever newline has been inserted); %% Class, Reason and StackTrace are the exception; %% FormatFun = fun(Term, I) -> iolist() formats terms; -%% StackFun = fun(Mod, Fun, Arity) -> bool() is used for trimming the +%% StackFun = fun(Mod, Fun, Arity) -> boolean() is used for trimming the %% end of the stack (typically calls to erl_eval are skipped). -format_exception(I, Class, Reason, StackTrace, StackFun, FormatFun) +format_exception(I, Class, Reason, StackTrace, StackFun, FormatFun) -> + format_exception(I, Class, Reason, StackTrace, StackFun, FormatFun, + latin1). + +%% -> iolist() | unicode:charlist() (no \n at end) +%% FormatFun = fun(Term, I) -> iolist() | unicode:charlist(). +format_exception(I, Class, Reason, StackTrace, StackFun, FormatFun, Encoding) when is_integer(I), I >= 1, is_function(StackFun, 3), is_function(FormatFun, 2) -> S = n_spaces(I-1), {Term,Trace1,Trace} = analyze_exception(Class, Reason, StackTrace), - Expl0 = explain_reason(Term, Class, Trace1, FormatFun, S), - Expl = io_lib:fwrite(<<"~s~s">>, [exited(Class), Expl0]), - case format_stacktrace1(S, Trace, FormatFun, StackFun) of + Expl0 = explain_reason(Term, Class, Trace1, FormatFun, S, Encoding), + FormatString = case Encoding of + latin1 -> "~s~s"; + _ -> "~s~ts" + end, + Expl = io_lib:fwrite(FormatString, [exited(Class), Expl0]), + case format_stacktrace1(S, Trace, FormatFun, StackFun, Encoding) of [] -> Expl; Stack -> [Expl, $\n, Stack] end. %% -> iolist() (no \n at end) -format_stacktrace(I, StackTrace, StackFun, FormatFun) +format_stacktrace(I, StackTrace, StackFun, FormatFun) -> + format_stacktrace(I, StackTrace, StackFun, FormatFun, latin1). + +%% -> iolist() | unicode:charlist() (no \n at end) +format_stacktrace(I, StackTrace, StackFun, FormatFun, Encoding) when is_integer(I), I >= 1, is_function(StackFun, 3), is_function(FormatFun, 2) -> S = n_spaces(I-1), - format_stacktrace1(S, StackTrace, FormatFun, StackFun). + format_stacktrace1(S, StackTrace, FormatFun, StackFun, Encoding). %% -> iolist() (no \n at end) -format_call(I, ForMForFun, As, FormatFun) when is_integer(I), I >= 1, - is_list(As), - is_function(FormatFun, 2) -> - format_call("", n_spaces(I-1), ForMForFun, As, FormatFun). +format_call(I, ForMForFun, As, FormatFun) -> + format_call(I, ForMForFun, As, FormatFun, latin1). + +%% -> iolist() | unicode:charlist() (no \n at end) +format_call(I, ForMForFun, As, FormatFun, Enc) + when is_integer(I), I >= 1, is_list(As), is_function(FormatFun, 2) -> + format_call("", n_spaces(I-1), ForMForFun, As, FormatFun, Enc). %% -> iolist() (no \n at end) format_fun(Fun) when is_function(Fun) -> @@ -204,79 +222,80 @@ is_stacktrace(_) -> false. %% ERTS exit codes (some of them are also returned by erl_eval): -explain_reason(badarg, error, [], _PF, _S) -> +explain_reason(badarg, error, [], _PF, _S, _Enc) -> <<"bad argument">>; -explain_reason({badarg,V}, error=Cl, [], PF, S) -> % orelse, andalso +explain_reason({badarg,V}, error=Cl, [], PF, S, _Enc) -> % orelse, andalso format_value(V, <<"bad argument: ">>, Cl, PF, S); -explain_reason(badarith, error, [], _PF, _S) -> +explain_reason(badarith, error, [], _PF, _S, _Enc) -> <<"an error occurred when evaluating an arithmetic expression">>; -explain_reason({badarity,{Fun,As}}, error, [], _PF, _S) +explain_reason({badarity,{Fun,As}}, error, [], _PF, _S, _Enc) when is_function(Fun) -> %% Only the arity is displayed, not the arguments As. io_lib:fwrite(<<"~s called with ~s">>, [format_fun(Fun), argss(length(As))]); -explain_reason({badfun,Term}, error=Cl, [], PF, S) -> +explain_reason({badfun,Term}, error=Cl, [], PF, S, _Enc) -> format_value(Term, <<"bad function ">>, Cl, PF, S); -explain_reason({badmatch,Term}, error=Cl, [], PF, S) -> - format_value(Term, <<"no match of right hand side value ">>, Cl, PF, S); -explain_reason({case_clause,V}, error=Cl, [], PF, S) -> +explain_reason({badmatch,Term}, error=Cl, [], PF, S, _Enc) -> + Str = <<"no match of right hand side value ">>, + format_value(Term, Str, Cl, PF, S); +explain_reason({case_clause,V}, error=Cl, [], PF, S, _Enc) -> %% "there is no case clause with a true guard sequence and a %% pattern matching..." format_value(V, <<"no case clause matching ">>, Cl, PF, S); -explain_reason(function_clause, error, [{F,A}], _PF, _S) -> +explain_reason(function_clause, error, [{F,A}], _PF, _S, _Enc) -> %% Shell commands FAs = io_lib:fwrite(<<"~w/~w">>, [F, A]), [<<"no function clause matching call to ">> | FAs]; -explain_reason(function_clause, error=Cl, [{M,F,As,Loc}], PF, S) -> +explain_reason(function_clause, error=Cl, [{M,F,As,Loc}], PF, S, Enc) -> Str = <<"no function clause matching ">>, - [format_errstr_call(Str, Cl, {M,F}, As, PF, S),$\s|location(Loc)]; -explain_reason(if_clause, error, [], _PF, _S) -> + [format_errstr_call(Str, Cl, {M,F}, As, PF, S, Enc),$\s|location(Loc)]; +explain_reason(if_clause, error, [], _PF, _S, _Enc) -> <<"no true branch found when evaluating an if expression">>; -explain_reason(noproc, error, [], _PF, _S) -> +explain_reason(noproc, error, [], _PF, _S, _Enc) -> <<"no such process or port">>; -explain_reason(notalive, error, [], _PF, _S) -> +explain_reason(notalive, error, [], _PF, _S, _Enc) -> <<"the node cannot be part of a distributed system">>; -explain_reason(system_limit, error, [], _PF, _S) -> +explain_reason(system_limit, error, [], _PF, _S, _Enc) -> <<"a system limit has been reached">>; -explain_reason(timeout_value, error, [], _PF, _S) -> +explain_reason(timeout_value, error, [], _PF, _S, _Enc) -> <<"bad receive timeout value">>; -explain_reason({try_clause,V}, error=Cl, [], PF, S) -> +explain_reason({try_clause,V}, error=Cl, [], PF, S, _Enc) -> %% "there is no try clause with a true guard sequence and a %% pattern matching..." format_value(V, <<"no try clause matching ">>, Cl, PF, S); -explain_reason(undef, error, [{M,F,A,_}], _PF, _S) -> +explain_reason(undef, error, [{M,F,A,_}], _PF, _S, _Enc) -> %% Only the arity is displayed, not the arguments, if there are any. io_lib:fwrite(<<"undefined function ~s">>, [mfa_to_string(M, F, n_args(A))]); -explain_reason({shell_undef,F,A,_}, error, [], _PF, _S) -> +explain_reason({shell_undef,F,A,_}, error, [], _PF, _S, _Enc) -> %% Give nicer reports for undefined shell functions %% (but not when the user actively calls shell_default:F(...)). io_lib:fwrite(<<"undefined shell command ~s/~w">>, [F, n_args(A)]); %% Exit codes returned by erl_eval only: -explain_reason({argument_limit,_Fun}, error, [], _PF, _S) -> +explain_reason({argument_limit,_Fun}, error, [], _PF, _S, _Enc) -> io_lib:fwrite(<<"limit of number of arguments to interpreted function" " exceeded">>, []); -explain_reason({bad_filter,V}, error=Cl, [], PF, S) -> +explain_reason({bad_filter,V}, error=Cl, [], PF, S, _Enc) -> format_value(V, <<"bad filter ">>, Cl, PF, S); -explain_reason({bad_generator,V}, error=Cl, [], PF, S) -> +explain_reason({bad_generator,V}, error=Cl, [], PF, S, _Enc) -> format_value(V, <<"bad generator ">>, Cl, PF, S); -explain_reason({unbound,V}, error, [], _PF, _S) -> +explain_reason({unbound,V}, error, [], _PF, _S, _Enc) -> io_lib:fwrite(<<"variable ~w is unbound">>, [V]); %% Exit codes local to the shell module (restricted shell): -explain_reason({restricted_shell_bad_return, V}, exit=Cl, [], PF, S) -> +explain_reason({restricted_shell_bad_return, V}, exit=Cl, [], PF, S, _Enc) -> Str = <<"restricted shell module returned bad value ">>, format_value(V, Str, Cl, PF, S); explain_reason({restricted_shell_disallowed,{ForMF,As}}, - exit=Cl, [], PF, S) -> + exit=Cl, [], PF, S, Enc) -> %% ForMF can be a fun, but not a shell fun. Str = <<"restricted shell does not allow ">>, - format_errstr_call(Str, Cl, ForMF, As, PF, S); -explain_reason(restricted_shell_started, exit, [], _PF, _S) -> + format_errstr_call(Str, Cl, ForMF, As, PF, S, Enc); +explain_reason(restricted_shell_started, exit, [], _PF, _S, _Enc) -> <<"restricted shell starts now">>; -explain_reason(restricted_shell_stopped, exit, [], _PF, _S) -> +explain_reason(restricted_shell_stopped, exit, [], _PF, _S, _Enc) -> <<"restricted shell stopped">>; %% Other exit code: -explain_reason(Reason, Class, [], PF, S) -> +explain_reason(Reason, Class, [], PF, S, _Enc) -> PF(Reason, (iolist_size(S)+1) + exited_size(Class)). n_args(A) when is_integer(A) -> @@ -293,28 +312,28 @@ argss(2) -> argss(I) -> io_lib:fwrite(<<"~w arguments">>, [I]). -format_stacktrace1(S0, Stack0, PF, SF) -> +format_stacktrace1(S0, Stack0, PF, SF, Enc) -> Stack1 = lists:dropwhile(fun({M,F,A,_}) -> SF(M, F, A) end, lists:reverse(Stack0)), S = [" " | S0], Stack = lists:reverse(Stack1), - format_stacktrace2(S, Stack, 1, PF). + format_stacktrace2(S, Stack, 1, PF, Enc). -format_stacktrace2(S, [{M,F,A,L}|Fs], N, PF) when is_integer(A) -> +format_stacktrace2(S, [{M,F,A,L}|Fs], N, PF, Enc) when is_integer(A) -> [io_lib:fwrite(<<"~s~s ~s ~s">>, [sep(N, S), origin(N, M, F, A), mfa_to_string(M, F, A), location(L)]) - | format_stacktrace2(S, Fs, N + 1, PF)]; -format_stacktrace2(S, [{M,F,As,_}|Fs], N, PF) when is_list(As) -> + | format_stacktrace2(S, Fs, N + 1, PF, Enc)]; +format_stacktrace2(S, [{M,F,As,_}|Fs], N, PF, Enc) when is_list(As) -> A = length(As), CalledAs = [S,<<" called as ">>], - C = format_call("", CalledAs, {M,F}, As, PF), - [io_lib:fwrite(<<"~s~s ~s\n~s~s">>, + C = format_call("", CalledAs, {M,F}, As, PF, Enc), + [io_lib:fwrite(<<"~s~s ~s\n~s~ts">>, [sep(N, S), origin(N, M, F, A), mfa_to_string(M, F, A), CalledAs, C]) - | format_stacktrace2(S, Fs, N + 1, PF)]; -format_stacktrace2(_S, [], _N, _PF) -> + | format_stacktrace2(S, Fs, N + 1, PF, Enc)]; +format_stacktrace2(_S, [], _N, _PF, _Enc) -> "". location(L) -> @@ -338,22 +357,22 @@ origin(1, M, F, A) -> origin(_N, _M, _F, _A) -> <<"in call from">>. -format_errstr_call(ErrStr, Class, ForMForFun, As, PF, Pre0) -> +format_errstr_call(ErrStr, Class, ForMForFun, As, PF, Pre0, Enc) -> Pre1 = [Pre0 | n_spaces(exited_size(Class))], - format_call(ErrStr, Pre1, ForMForFun, As, PF). + format_call(ErrStr, Pre1, ForMForFun, As, PF, Enc). -format_call(ErrStr, Pre1, ForMForFun, As, PF) -> +format_call(ErrStr, Pre1, ForMForFun, As, PF, Enc) -> Arity = length(As), [ErrStr | case is_op(ForMForFun, Arity) of {yes,Op} -> - format_op(ErrStr, Pre1, Op, As, PF); + format_op(ErrStr, Pre1, Op, As, PF, Enc); no -> MFs = mf_to_string(ForMForFun, Arity), I1 = iolist_size([Pre1,ErrStr|MFs]), - S1 = pp_arguments(PF, As, I1), - S2 = pp_arguments(PF, As, iolist_size([Pre1|MFs])), - Long = count_nl(pp_arguments(PF, [a2345,b2345], I1)) > 0, + S1 = pp_arguments(PF, As, I1, Enc), + S2 = pp_arguments(PF, As, iolist_size([Pre1|MFs]), Enc), + Long = count_nl(pp_arguments(PF, [a2345,b2345], I1, Enc)) > 0, case Long or (count_nl(S2) < count_nl(S1)) of true -> [$\n, Pre1, MFs, S2]; @@ -362,11 +381,11 @@ format_call(ErrStr, Pre1, ForMForFun, As, PF) -> end end]. -format_op(ErrStr, Pre, Op, [A1], PF) -> +format_op(ErrStr, Pre, Op, [A1], PF, _Enc) -> OpS = io_lib:fwrite(<<"~s ">>, [Op]), I1 = iolist_size([ErrStr,Pre,OpS]), [OpS | PF(A1, I1+1)]; -format_op(ErrStr, Pre, Op, [A1, A2], PF) -> +format_op(ErrStr, Pre, Op, [A1, A2], PF, Enc) -> I1 = iolist_size([ErrStr,Pre]), S1 = PF(A1, I1+1), S2 = PF(A2, I1+1), @@ -377,33 +396,40 @@ format_op(ErrStr, Pre, Op, [A1, A2], PF) -> [S1,Pre1,OpS,Pre1|S2]; false -> OpS2 = io_lib:fwrite(<<" ~s ">>, [Op]), - S2_2 = PF(A2, iolist_size([ErrStr,Pre,S1|OpS2])+1), + Size1 = iolist_size([ErrStr,Pre|OpS2]), + {Size2,S1_2} = size(Enc, S1), + S2_2 = PF(A2, Size1+Size2+1), case count_nl(S2) < count_nl(S2_2) of true -> - [S1,Pre1,OpS,Pre1|S2]; + [S1_2,Pre1,OpS,Pre1|S2]; false -> - [S1,OpS2|S2_2] + [S1_2,OpS2|S2_2] end end. -pp_arguments(PF, As, I) -> - case {As, io_lib:printable_list(As)} of +pp_arguments(PF, As, I, Enc) -> + case {As, printable_list(Enc, As)} of {[Int | T], true} -> L = integer_to_list(Int), Ll = length(L), A = list_to_atom(lists:duplicate(Ll, $a)), - S0 = binary_to_list(iolist_to_binary(PF([A | T], I+1))), - brackets_to_parens([$[,L,string:sub_string(S0, 2+Ll)]); + S0 = unicode:characters_to_list(PF([A | T], I+1), Enc), + brackets_to_parens([$[,L,string:sub_string(S0, 2+Ll)], Enc); _ -> - brackets_to_parens(PF(As, I+1)) + brackets_to_parens(PF(As, I+1), Enc) end. -brackets_to_parens(S) -> - B = iolist_to_binary(S), +brackets_to_parens(S, Enc) -> + B = unicode:characters_to_binary(S, Enc), Sz = byte_size(B) - 2, <<$[,R:Sz/binary,$]>> = B, [$(,R,$)]. +printable_list(latin1, As) -> + io_lib:printable_list(As); +printable_list(_, As) -> + io_lib:printable_unicode_list(As). + mfa_to_string(M, F, A) -> io_lib:fwrite(<<"~s/~w">>, [mf_to_string({M, F}, A), A]). @@ -472,3 +498,10 @@ exited(exit) -> <<"exception exit: ">>; exited(throw) -> <<"exception throw: ">>. + +size(latin1, S) -> + {iolist_size(S),S}; +size(_, S0) -> + S = unicode:characters_to_list(S0, unicode), + true = is_list(S), + {length(S),S}. diff --git a/lib/stdlib/src/shell.erl b/lib/stdlib/src/shell.erl index dc450f0ee6..424650b8b3 100644 --- a/lib/stdlib/src/shell.erl +++ b/lib/stdlib/src/shell.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2011. All Rights Reserved. +%% Copyright Ericsson AB 1996-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -128,7 +128,7 @@ start_restricted(RShMod) when is_atom(RShMod) -> error_logger:error_report( lists:flatten( io_lib:fwrite( - <<"Restricted shell module ~w not found: ~p\n">>, + "Restricted shell module ~w not found: ~"++cs_p() ++"\n", [RShMod,What]))), Error end. @@ -192,7 +192,6 @@ server(StartSync) -> end, Bs0, default_packages()), default_modules()), - %% io:fwrite("Imported modules: ~p.\n", [erl_eval:bindings(Bs)]), %% Use an Ets table for record definitions. It takes too long to %% send a huge term to and from the evaluator. Ets makes it @@ -230,9 +229,10 @@ server(StartSync) -> ok; {RShMod2,What2} -> io:fwrite( - <<"Warning! Restricted shell module ~w not found: ~p.\n" - "Only the commands q() and init:stop() will be allowed!\n">>, - [RShMod2,What2]), + ("Warning! Restricted shell module ~w not found: ~" + ++cs_p()++".\n" + "Only the commands q() and init:stop() will be allowed!\n"), + [RShMod2,What2]), application:set_env(stdlib, restricted_shell, ?MODULE) end, @@ -263,11 +263,11 @@ server_loop(N0, Eval_0, Bs00, RT, Ds00, History0, Results0) -> end, server_loop(N, Eval, Bs, RT, Ds, History, Results); {error,E} -> - fwrite_severity(benign, <<"~s">>, [E]), + fwrite_severity(benign, <<"~ts">>, [E]), server_loop(N0, Eval0, Bs0, RT, Ds0, History0, Results0) end; {error,{Line,Mod,What},_EndLine} -> - fwrite_severity(benign, <<"~w: ~s">>, + fwrite_severity(benign, <<"~w: ~ts">>, [Line, Mod:format_error(What)]), server_loop(N0, Eval0, Bs0, RT, Ds0, History0, Results0); {error,terminated} -> %Io process terminated @@ -277,7 +277,7 @@ server_loop(N0, Eval_0, Bs00, RT, Ds00, History0, Results0) -> exit(Eval0, kill), {_,Eval,_,_} = shell_rep(Eval0, Bs0, RT, Ds0), server_loop(N0, Eval, Bs0, RT, Ds0, History0, Results0); - {error,tokens} -> %Most probably unicode > 255 + {error,tokens} -> %Most probably character > 255 fwrite_severity(benign, <<"~w: Invalid tokens.">>, [N]), server_loop(N0, Eval0, Bs0, RT, Ds0, History0, Results0); @@ -290,7 +290,10 @@ server_loop(N0, Eval_0, Bs00, RT, Ds00, History0, Results0) -> end. get_command(Prompt, Eval, Bs, RT, Ds) -> - Parse = fun() -> exit(io:parse_erl_exprs(Prompt)) end, + Parse = + fun() -> + exit(io:parse_erl_exprs(group_leader(), Prompt, 1, [unicode])) + end, Pid = spawn_link(Parse), get_command1(Pid, Eval, Bs, RT, Ds). @@ -337,7 +340,7 @@ get_prompt_func() -> end. bad_prompt_func(M) -> - fwrite_severity(benign, <<"Bad prompt function: ~p">>, [M]). + fwrite_severity(benign, "Bad prompt function: ~"++cs_p(), [M]). default_prompt(N) -> %% Don't bother flattening the list irrespective of what the @@ -453,7 +456,8 @@ expand_bin_elements([{bin_element,L,E,Sz,Ts}|Fs], C) -> no_command(N) -> throw({error, - io_lib:fwrite(<<"~s: command not found">>, [erl_pp:expr(N)])}). + io_lib:fwrite(<<"~ts: command not found">>, + [erl_pp:expr(N, enc())])}). %% add_cmd(Number, Expressions, Value) %% get_cmd(Number, CurrentCommand) @@ -518,7 +522,7 @@ shell_rep(Ev, Bs0, RT, Ds0) -> {shell_rep,Ev,{value,V,Bs,Ds}} -> {V,Ev,Bs,Ds}; {shell_rep,Ev,{command_error,{Line,M,Error}}} -> - fwrite_severity(benign, <<"~w: ~s">>, + fwrite_severity(benign, <<"~w: ~ts">>, [Line, M:format_error(Error)]), {{'EXIT',Error},Ev,Bs0,Ds0}; {shell_req,Ev,get_cmd} -> @@ -570,9 +574,10 @@ report_exception(Class, Severity, {Reason,Stacktrace}, RT) -> I = iolist_size(Tag) + 1, PF = fun(Term, I1) -> pp(Term, I1, RT) end, SF = fun(M, _F, _A) -> (M =:= erl_eval) or (M =:= ?MODULE) end, - io:requests([{put_chars, Tag}, - {put_chars, - lib:format_exception(I, Class, Reason, Stacktrace, SF, PF)}, + Enc = encoding(), + Str = lib:format_exception(I, Class, Reason, Stacktrace, SF, PF, Enc), + io:requests([{put_chars, latin1, Tag}, + {put_chars, unicode, Str}, nl]). start_eval(Bs, RT, Ds) -> @@ -671,7 +676,8 @@ exprs([E0|Es], Bs1, RT, Lf, Ef, Bs0, W) -> if Es =:= [] -> VS = pp(V0, 1, RT), - [io:requests([{put_chars, VS}, nl]) || W =:= cmd], + [io:requests([{put_chars, unicode, VS}, nl]) || + W =:= cmd], %% Don't send the result back if it will be %% discarded anyway. V = if @@ -753,7 +759,7 @@ used_records(E) -> {expr, E}. fwrite_severity(Severity, S, As) -> - io:fwrite(<<"~s\n">>, [format_severity(Severity, S, As)]). + io:fwrite(<<"~ts\n">>, [format_severity(Severity, S, As)]). format_severity(Severity, S, As) -> add_severity(Severity, io_lib:fwrite(S, As)). @@ -958,13 +964,13 @@ local_func(rd, [{atom,_,RecName},RecDef0], Bs, _Shell, RT, _Lf, _Ef) -> RecDef = expand_value(RecDef0), RDs = lists:flatten(erl_pp:expr(RecDef)), Attr = lists:concat(["-record('", RecName, "',", RDs, ")."]), - {ok, Tokens, _} = erl_scan:string(Attr), + {ok, Tokens, _} = erl_scan:string(Attr, 1, [unicode]), case erl_parse:parse_form(Tokens) of {ok,AttrForm} -> [RN] = add_records([AttrForm], Bs, RT), {value,RN,Bs}; {error,{_Line,M,ErrDesc}} -> - ErrStr = io_lib:fwrite(<<"~s">>, [M:format_error(ErrDesc)]), + ErrStr = io_lib:fwrite(<<"~ts">>, [M:format_error(ErrDesc)]), exit(lists:flatten(ErrStr)) end; local_func(rd, [_,_], _Bs, _Shell, _RT, _Lf, _Ef) -> @@ -988,11 +994,13 @@ local_func(rl, [A], Bs0, _Shell, RT, Lf, Ef) -> {value,list_records(record_defs(RT, listify(Recs))),Bs}; local_func(rp, [A], Bs0, _Shell, RT, Lf, Ef) -> {[V],Bs} = expr_list([A], Bs0, Lf, Ef), - W = columns(), - io:requests([{put_chars, - io_lib_pretty:print(V, 1, W, -1, ?CHAR_MAX, - record_print_fun(RT))}, - nl]), + Cs = io_lib_pretty:print(V, ([{column, 1}, + {line_length, columns()}, + {depth, -1}, + {max_chars, ?CHAR_MAX}, + {record_print_fun, record_print_fun(RT)}] + ++ enc())), + io:requests([{put_chars, unicode, Cs}, nl]), {value,ok,Bs}; local_func(rr, [A], Bs0, _Shell, RT, Lf, Ef) -> {[File],Bs} = expr_list([A], Bs0, Lf, Ef), @@ -1166,7 +1174,7 @@ add_records(RAs, Bs0, RT) -> case check_command([], Bs1) of {error,{_Line,M,ErrDesc}} -> %% A source file that has not been compiled. - ErrStr = io_lib:fwrite(<<"~s">>, [M:format_error(ErrDesc)]), + ErrStr = io_lib:fwrite(<<"~ts">>, [M:format_error(ErrDesc)]), exit(lists:flatten(ErrStr)); ok -> true = ets:insert(RT, Recs), @@ -1343,25 +1351,25 @@ list_commands([{{N,command},Es0}, {{N,result}, V} |Ds], RT) -> VS = pp(V, 4, RT), Ns = io_lib:fwrite(<<"~w: ">>, [N]), I = iolist_size(Ns), - io:requests([{put_chars, Ns}, - {format,<<"~s\n">>,[erl_pp:exprs(Es, I, none)]}, + io:requests([{put_chars, latin1, Ns}, + {format,<<"~ts\n">>,[erl_pp:exprs(Es, I, enc())]}, {format,<<"-> ">>,[]}, - {put_chars, VS}, + {put_chars, unicode, VS}, nl]), list_commands(Ds, RT); list_commands([{{N,command},Es0} |Ds], RT) -> Es = prep_list_commands(Es0), Ns = io_lib:fwrite(<<"~w: ">>, [N]), I = iolist_size(Ns), - io:requests([{put_chars, Ns}, - {format,<<"~s\n">>,[erl_pp:exprs(Es, I, none)]}]), + io:requests([{put_chars, latin1, Ns}, + {format,<<"~ts\n">>,[erl_pp:exprs(Es, I, enc())]}]), list_commands(Ds, RT); list_commands([_D|Ds], RT) -> list_commands(Ds, RT); list_commands([], _RT) -> ok. list_bindings([{{module,M},Val}|Bs], RT) -> - io:fwrite(<<"~p is ~p\n">>, [M,Val]), + io:fwrite(<<"~w is ~w\n">>, [M,Val]), list_bindings(Bs, RT); list_bindings([{Name,Val}|Bs], RT) -> case erl_eval:fun_data(Val) of @@ -1369,13 +1377,13 @@ list_bindings([{Name,Val}|Bs], RT) -> FCs = expand_value(FCs0), % looks nicer F = {'fun',0,{clauses,FCs}}, M = {match,0,{var,0,Name},F}, - io:fwrite(<<"~s\n">>, [erl_pp:expr(M)]); + io:fwrite(<<"~ts\n">>, [erl_pp:expr(M, enc())]); false -> Namel = io_lib:fwrite(<<"~s = ">>, [Name]), Nl = iolist_size(Namel)+1, ValS = pp(Val, Nl, RT), - io:requests([{put_chars, Namel}, - {put_chars, ValS}, + io:requests([{put_chars, latin1, Namel}, + {put_chars, unicode, ValS}, nl]) end, list_bindings(Bs, RT); @@ -1384,7 +1392,7 @@ list_bindings([], _RT) -> list_records(Records) -> lists:foreach(fun({_Name,Attr}) -> - io:fwrite(<<"~s">>, [erl_pp:attribute(Attr)]) + io:fwrite(<<"~ts">>, [erl_pp:attribute(Attr, enc())]) end, Records). record_defs(RT, Names) -> @@ -1427,8 +1435,20 @@ get_history_and_results() -> {History, erlang:min(Results, History)}. pp(V, I, RT) -> - io_lib_pretty:print(V, I, columns(), ?LINEMAX, ?CHAR_MAX, - record_print_fun(RT)). + pp(V, I, RT, enc()). + +pp(V, I, RT, Enc) -> + io_lib_pretty:print(V, ([{column, I}, {line_length, columns()}, + {depth, ?LINEMAX}, {max_chars, ?CHAR_MAX}, + {record_print_fun, record_print_fun(RT)}] + ++ Enc)). + +%% Control sequence 'p' possibly with Unicode translation modifier +cs_p() -> + case encoding() of + latin1 -> "p"; + unicode -> "tp" + end. columns() -> case io:columns() of @@ -1436,6 +1456,16 @@ columns() -> _ -> 80 end. +encoding() -> + [{encoding, Encoding}] = enc(), + Encoding. + +enc() -> + case lists:keyfind(encoding, 1, io:getopts()) of + false -> [{encoding,latin1}]; % should never happen + Enc -> [Enc] + end. + garb(Shell) -> erlang:garbage_collect(Shell), catch erlang:garbage_collect(whereis(user)), @@ -1458,7 +1488,8 @@ check_env(V) -> ok; {ok, Val} -> Txt = io_lib:fwrite( - <<"Invalid value of STDLIB configuration parameter ~p: ~p\n">>, + ("Invalid value of STDLIB configuration parameter ~w: ~" + ++cs_p()++"\n"), [V, Val]), error_logger:info_report(lists:flatten(Txt)) end. diff --git a/lib/stdlib/test/epp_SUITE.erl b/lib/stdlib/test/epp_SUITE.erl index 77c615d6d9..606bbbcbb2 100644 --- a/lib/stdlib/test/epp_SUITE.erl +++ b/lib/stdlib/test/epp_SUITE.erl @@ -25,7 +25,7 @@ variable_1/1, otp_4870/1, otp_4871/1, otp_5362/1, pmod/1, not_circular/1, skip_header/1, otp_6277/1, otp_7702/1, otp_8130/1, overload_mac/1, otp_8388/1, otp_8470/1, otp_8503/1, - otp_8562/1, otp_8665/1, otp_8911/1]). + otp_8562/1, otp_8665/1, otp_8911/1, otp_10302/1]). -export([epp_parse_erl_form/2]). @@ -67,7 +67,7 @@ all() -> {group, variable}, otp_4870, otp_4871, otp_5362, pmod, not_circular, skip_header, otp_6277, otp_7702, otp_8130, overload_mac, otp_8388, otp_8470, otp_8503, otp_8562, - otp_8665, otp_8911]. + otp_8665, otp_8911, otp_10302]. groups() -> [{upcase_mac, [], [upcase_mac_1, upcase_mac_2]}, @@ -582,12 +582,13 @@ otp_8130(suite) -> otp_8130(Config) when is_list(Config) -> true = os:putenv("epp_inc1", "stdlib"), Ts = [{otp_8130_1, - %% The scanner handles UNICODE in a special way. Hopefully - %% temporarily. <<"-define(M(A), ??A). " "t() -> " - " \"{ 34 , [ $1 , 2730 ] , \\\"34\\\" , X . a , 2730 }\" = " - " ?M({34,\"1\\x{aaa}\",\"34\",X.a,$\\x{aaa}}), ok. ">>, + " L = \"{ 34 , \\\"1\\\\x{AAA}\\\" , \\\"34\\\" , X . a , $\\\\x{AAA} }\", " + " R = ?M({34,\"1\\x{aaa}\",\"34\",X.a,$\\x{aaa}})," + " Lt = erl_scan:string(L, 1, [unicode])," + " Rt = erl_scan:string(R, 1, [unicode])," + " Lt = Rt, ok. ">>, ok}, {otp_8130_2, @@ -1284,6 +1285,75 @@ otp_8665(Config) when is_list(Config) -> ?line [] = compile(Config, Cs), ok. +otp_10302(doc) -> + "OTP-10302. Unicode characters scanner/parser."; +otp_10302(suite) -> + []; +otp_10302(Config) when is_list(Config) -> + %% Two messages (one too many). Keeps otp_4871 happy. + Cs = [{otp_8562, + <<"%% coding: utf-8\n \n \x{E4}">>, + {errors,[{3,epp,cannot_parse}, + {3,file_io_server,invalid_unicode}],[]}} + ], + [] = compile(Config, Cs), + Dir = ?config(priv_dir, Config), + File = filename:join(Dir, "otp_10302.erl"), + utf8 = encoding("coding: utf-8", File), + utf8 = encoding("coding: UTF-8", File), + latin1 = encoding("coding: Latin-1", File), + latin1 = encoding("coding: latin-1", File), + none = encoding_com("coding: utf-8", File), + none = encoding_com("\n\n%% coding: utf-8", File), + none = encoding_nocom("\n\n coding: utf-8", File), + utf8 = encoding_com("\n%% coding: utf-8", File), + utf8 = encoding_nocom("\n coding: utf-8", File), + none = encoding("coding: \nutf-8", File), + latin1 = encoding("Encoding : latin-1", File), + utf8 = encoding("ccoding: UTF-8", File), + utf8 = encoding("coding= utf-8", File), + utf8 = encoding_com(" %% coding= utf-8", File), + utf8 = encoding("coding = utf-8", File), + none = encoding("coding: utf-16 coding: utf-8", File), %first is bad + none = encoding("Coding: utf-8", File), %capital c + utf8 = encoding("-*- coding: utf-8 -*-", File), + utf8 = encoding("-*-coding= utf-8-*-", File), + utf8 = encoding("codingcoding= utf-8", File), + ok = prefix("coding: utf-8", File, utf8), + + "coding: latin-1" = epp:encoding_to_string(latin1), + "coding: utf-8" = epp:encoding_to_string(utf8), + true = lists:member(epp:default_encoding(), [latin1, utf8]), + + ok. + +prefix(S, File, Enc) -> + prefix(0, S, File, Enc). + +prefix(100, _S, _File, _) -> + ok; +prefix(N, S, File, Enc) -> + Enc = encoding(lists:duplicate(N, $\s) ++ S, File), + prefix(N+1, S, File, Enc). + +encoding(Enc, File) -> + E = encoding_com("%% " ++ Enc, File), + none = encoding_com(Enc, File), + E = encoding_nocom(Enc, File). + +encoding_com(Enc, File) -> + ok = file:write_file(File, Enc), + {ok, Fd} = file:open(File, [read]), + E = epp:set_encoding(Fd), + ok = file:close(Fd), + E = epp:read_encoding(File). + +encoding_nocom(Enc, File) -> + ok = file:write_file(File, Enc), + {ok, Fd} = file:open(File, [read]), + ok = file:close(Fd), + epp:read_encoding(File, [{in_comment_only, false}]). + check(Config, Tests) -> eval_tests(Config, fun check_test/2, Tests). diff --git a/lib/stdlib/test/erl_pp_SUITE.erl b/lib/stdlib/test/erl_pp_SUITE.erl index 64853ca078..07303174f1 100644 --- a/lib/stdlib/test/erl_pp_SUITE.erl +++ b/lib/stdlib/test/erl_pp_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2006-2011. All Rights Reserved. +%% Copyright Ericsson AB 2006-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -48,7 +48,8 @@ neg_indent/1, otp_6321/1, otp_6911/1, otp_6914/1, otp_8150/1, otp_8238/1, - otp_8473/1, otp_8522/1, otp_8567/1, otp_8664/1, otp_9147/1]). + otp_8473/1, otp_8522/1, otp_8567/1, otp_8664/1, otp_9147/1, + otp_10302/1]). %% Internal export. -export([ehook/6]). @@ -79,7 +80,7 @@ groups() -> {attributes, [], [misc_attrs, import_export]}, {tickets, [], [otp_6321, otp_6911, otp_6914, otp_8150, otp_8238, - otp_8473, otp_8522, otp_8567, otp_8664, otp_9147]}]. + otp_8473, otp_8522, otp_8567, otp_8664, otp_9147, otp_10302]}]. init_per_suite(Config) -> Config. @@ -634,8 +635,12 @@ misc_attrs(Config) when is_list(Config) -> hook(suite) -> []; hook(Config) when is_list(Config) -> + F = fun(H) -> H end, + do_hook(F). + +do_hook(HookFun) -> Lc = parse_expr(binary_to_list(<<"[X || X <- [1,2,3]].">>)), - H = fun hook/4, + H = HookFun(fun hook/4), Expr = {call,0,{atom,0,fff},[{foo,Lc},{foo,Lc},{foo,Lc}]}, EChars = lists:flatten(erl_pp:expr(Expr, 0, H)), Call = {call,0,{atom,0,foo},[Lc]}, @@ -692,7 +697,7 @@ hook(Config) when is_list(Config) -> GChars2 = erl_pp:guard(G2), ?line true = GChars =:= lists:flatten(GChars2), - EH = {?MODULE, ehook, [foo,bar]}, + EH = HookFun({?MODULE, ehook, [foo,bar]}), XEChars = erl_pp:expr(Expr, -1, EH), ?line true = remove_indentation(EChars) =:= lists:flatten(XEChars), XEChars2 = erl_pp:expr(Expr, EH), @@ -1068,6 +1073,43 @@ otp_9147(Config) when is_list(Config) -> string:tokens(binary_to_list(Bin), "\n")), ok. +otp_10302(doc) -> + "OTP-10302. Unicode characters scanner/parser."; +otp_10302(suite) -> []; +otp_10302(Config) when is_list(Config) -> + Ts = [{uni_1, + <<"t() -> <<(<<\"abc\\x{aaa}\">>):3/binary>>.">>} + ], + compile(Config, Ts), + ok = pp_expr(<<"$\\x{aaa}">>), + ok = pp_expr(<<"\"1\\x{aaa}\"">>), + ok = pp_expr(<<"<<<<\"hej\">>/binary>>">>), + ok = pp_expr(<<"<< <<\"1\\x{aaa}\">>/binary>>">>), + + U = [{encoding,unicode}], + + do_hook(fun(H) -> [{hook,H}] end), + do_hook(fun(H) -> [{hook,H}]++U end), + + ok = pp_expr(<<"$\\x{aaa}">>, [{hook,fun hook/4}]), + + Opts = [{hook, fun unicode_hook/4},{encoding,unicode}], + Lc = parse_expr("[X || X <- [\"\x{400}\",\"\xFF\"]]."), + Expr = {call,0,{atom,0,fff},[{foo,{foo,Lc}},{foo,{foo,Lc}}]}, + EChars = lists:flatten(erl_pp:expr(Expr, 0, Opts)), + Call = {call,0,{atom,0,foo},[{call,0,{atom,0,foo},[Lc]}]}, + Expr2 = {call,0,{atom,0,fff},[Call,Call]}, + EChars2 = erl_pp:exprs([Expr2], U), + EChars = lists:flatten(EChars2), + [$\x{400},$\x{400}] = [C || C <- EChars, C > 255], + + ok = pp_forms(<<"function() -> {\"\x{400}\",$\x{400}}. "/utf8>>, U), + ok = pp_forms("function() -> {\"\x{400}\",$\x{400}}. ", []), + ok. + +unicode_hook({foo,E}, I, P, H) -> + erl_pp:expr({call,0,{atom,0,foo},[E]}, I, P, H). + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% compile(Config, Tests) -> @@ -1137,9 +1179,11 @@ flat_expr(Expr) -> pp_forms(Bin) -> pp_forms(Bin, none). -pp_forms(Bin, Hook) -> - PP1 = (catch parse_and_pp_forms(binary_to_list(Bin), Hook)), - PP2 = (catch parse_and_pp_forms(PP1, Hook)), +pp_forms(Bin, Options) when is_binary(Bin) -> + pp_forms(to_list(Bin, Options), Options); +pp_forms(List, Options) when is_list(List) -> + PP1 = (catch parse_and_pp_forms(List, Options)), + PP2 = (catch parse_and_pp_forms(PP1, Options)), case PP1 =:= PP2 of % same line numbers true -> test_max_line(PP1); @@ -1147,8 +1191,8 @@ pp_forms(Bin, Hook) -> not_ok end. -parse_and_pp_forms(String, Hook) -> - lists:append(lists:map(fun(AF) -> erl_pp:form(AF, Hook) +parse_and_pp_forms(String, Options) -> + lists:append(lists:map(fun(AF) -> erl_pp:form(AF, Options) end, parse_forms(String))). parse_forms(Chars) -> @@ -1158,7 +1202,7 @@ parse_forms(Chars) -> parse_forms2([], _Cont, _Line, Forms) -> lists:reverse(Forms); parse_forms2(String, Cont0, Line, Forms) -> - case erl_scan:tokens(Cont0, String, Line) of + case erl_scan:tokens(Cont0, String, Line, [unicode]) of {done, {ok, Tokens, EndLine}, Chars} -> {ok, Form} = erl_parse:parse_form(Tokens), parse_forms2(Chars, [], EndLine, [Form | Forms]); @@ -1174,10 +1218,12 @@ pp_expr(Bin) -> pp_expr(Bin, none). %% Final dot is added. -pp_expr(Bin, Hook) -> - PP1 = (catch parse_and_pp_expr(binary_to_list(Bin), 0, Hook)), - PPneg = (catch parse_and_pp_expr(binary_to_list(Bin), -1, Hook)), - PP2 = (catch parse_and_pp_expr(PPneg, 0, Hook)), +pp_expr(Bin, Options) when is_binary(Bin) -> + pp_expr(to_list(Bin, Options), Options); +pp_expr(List, Options) when is_list(List) -> + PP1 = (catch parse_and_pp_expr(List, 0, Options)), + PPneg = (catch parse_and_pp_expr(List, -1, Options)), + PP2 = (catch parse_and_pp_expr(PPneg, 0, Options)), if PP1 =:= PP2 -> % same line numbers case @@ -1192,15 +1238,24 @@ pp_expr(Bin, Hook) -> not_ok end. -parse_and_pp_expr(String, Indent, Hook) -> +parse_and_pp_expr(String, Indent, Options) -> StringDot = lists:flatten(String) ++ ".", - erl_pp:expr(parse_expr(StringDot), Indent, Hook). + erl_pp:expr(parse_expr(StringDot), Indent, Options). parse_expr(Chars) -> - {ok, Tokens, _} = erl_scan:string(Chars), + {ok, Tokens, _} = erl_scan:string(Chars, 1, [unicode]), {ok, [Expr]} = erl_parse:parse_exprs(Tokens), Expr. +to_list(Bin, Options) when is_list(Options) -> + case proplists:get_value(encoding, Options) of + unicode -> unicode:characters_to_list(Bin); + encoding -> binary_to_list(Bin); + undefined -> binary_to_list(Bin) + end; +to_list(Bin, _Hook) -> + binary_to_list(Bin). + test_new_line(String) -> case string:chr(String, $\n) of 0 -> ok; diff --git a/lib/stdlib/test/erl_scan_SUITE.erl b/lib/stdlib/test/erl_scan_SUITE.erl index 4298b2c701..7994146d67 100644 --- a/lib/stdlib/test/erl_scan_SUITE.erl +++ b/lib/stdlib/test/erl_scan_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1998-2011. All Rights Reserved. +%% Copyright Ericsson AB 1998-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -20,7 +20,7 @@ -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2]). --export([ error_1/1, error_2/1, iso88591/1, otp_7810/1]). +-export([ error_1/1, error_2/1, iso88591/1, otp_7810/1, otp_10302/1]). -import(lists, [nth/2,flatten/1]). -import(io_lib, [print/1]). @@ -59,7 +59,7 @@ end_per_testcase(_Case, Config) -> suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> - [{group, error}, iso88591, otp_7810]. + [{group, error}, iso88591, otp_7810, otp_10302]. groups() -> [{error, [], [error_1, error_2]}]. @@ -823,7 +823,7 @@ unicode() -> ?line {ok,[{char,1,1}],1} = erl_scan:string([$$,$\\,$^,1089]), ?line {error,{1,erl_scan,Error},1} = erl_scan:string("\"qa\x{aaa}"), - ?line "unterminated string starting with \"qa\\x{AAA}\"" = + ?line "unterminated string starting with \"qa"++[2730]++"\"" = erl_scan:format_error(Error), ?line {error,{{1,1},erl_scan,_},{1,11}} = erl_scan:string("\"qa\\x{aaa}",{1,1}), @@ -887,9 +887,10 @@ unicode() -> {char,_,$d},{']',_}],{1,8}} = erl_scan:string(Str1, {1,1}), ?line test(Str1), Comment = "%% "++[1089], - ?line {ok,[{comment,1,[$%,$%,$\s,1089]}],1} = + %% Returned a comment In R15B03: + {error,{1,erl_scan,{illegal,character}},1} = erl_scan:string(Comment, 1, return), - ?line {ok,[{comment,_,[$%,$%,$\s,1089]}],{1,5}} = + {error,{{1,1},erl_scan,{illegal,character}},{1,5}} = erl_scan:string(Comment, {1,1}, return), ok. @@ -958,6 +959,182 @@ more_chars() -> erl_scan:string("$\\xg", {1,1}), ok. +otp_10302(doc) -> + "OTP-10302. Unicode characters scanner/parser."; +otp_10302(suite) -> + []; +otp_10302(Config) when is_list(Config) -> + %% From unicode(): + {error,{1,erl_scan,{illegal,atom}},1} = + erl_scan:string("'a"++[1089]++"b'", 1, unicode), + {error,{{1,1},erl_scan,{illegal,atom}},{1,12}} = + erl_scan:string("'qa\\x{aaa}'",{1,1},unicode), + + {ok,[{char,1,1089}],1} = erl_scan:string([$$,1089], 1, unicode), + {ok,[{char,1,1089}],1} = erl_scan:string([$$,$\\,1089],1,unicode), + + Qs = "$\\x{aaa}", + {ok,[{char,1,2730}],1} = erl_scan:string(Qs,1,unicode), + {ok,[Q2],{1,9}} = erl_scan:string(Qs,{1,1},[unicode,text]), + [{category,char},{column,1},{length,8}, + {line,1},{symbol,16#aaa},{text,Qs}] = + erl_scan:token_info(Q2), + + Tags = [category, column, length, line, symbol, text], + + U1 = "\"\\x{aaa}\"", + {ok,[T1],{1,10}} = erl_scan:string(U1, {1,1}, [unicode,text]), + [{category,string},{column,1},{length,9},{line,1}, + {symbol,[16#aaa]},{text,U1}] = erl_scan:token_info(T1, Tags), + + U2 = "\"\\x41\\x{fff}\\x42\"", + {ok,[{string,1,[65,4095,66]}],1} = erl_scan:string(U2, 1, unicode), + + U3 = "\"a\n\\x{fff}\n\"", + {ok,[{string,1,[97,10,4095,10]}],3} = erl_scan:string(U3, 1,unicode), + + U4 = "\"\\^\n\\x{aaa}\\^\n\"", + {ok,[{string,1,[10,2730,10]}],3} = erl_scan:string(U4, 1,[unicode]), + + Str1 = "\"ab" ++ [1089] ++ "cd\"", + {ok,[{string,1,[97,98,1089,99,100]}],1} = + erl_scan:string(Str1,1,unicode), + {ok,[{string,{1,1},[97,98,1089,99,100]}],{1,8}} = + erl_scan:string(Str1, {1,1},unicode), + + OK1 = 16#D800-1, + OK2 = 16#DFFF+1, + OK3 = 16#FFFE-1, + OK4 = 16#FFFF+1, + OKL = [OK1,OK2,OK3,OK4], + + Illegal1 = 16#D800, + Illegal2 = 16#DFFF, + Illegal3 = 16#FFFE, + Illegal4 = 16#FFFF, + IllegalL = [Illegal1,Illegal2,Illegal3,Illegal4], + + [{ok,[{comment,1,[$%,$%,$\s,OK]}],1} = + erl_scan:string("%% "++[OK], 1, [unicode,return]) || + OK <- OKL], + {ok,[{comment,_,[$%,$%,$\s,OK1]}],{1,5}} = + erl_scan:string("%% "++[OK1], {1,1}, [unicode,return]), + [{error,{1,erl_scan,{illegal,character}},1} = + erl_scan:string("%% "++[Illegal], 1, [unicode,return]) || + Illegal <- IllegalL], + {error,{{1,1},erl_scan,{illegal,character}},{1,5}} = + erl_scan:string("%% "++[Illegal1], {1,1}, [unicode,return]), + + [{ok,[],1} = erl_scan:string("%% "++[OK], 1, [unicode]) || + OK <- OKL], + {ok,[],{1,5}} = erl_scan:string("%% "++[OK1], {1,1}, [unicode]), + [{error,{1,erl_scan,{illegal,character}},1} = + erl_scan:string("%% "++[Illegal], 1, [unicode]) || + Illegal <- IllegalL], + {error,{{1,1},erl_scan,{illegal,character}},{1,5}} = + erl_scan:string("%% "++[Illegal1], {1,1}, [unicode]), + + [{ok,[{string,{1,1},[OK]}],{1,4}} = + erl_scan:string("\""++[OK]++"\"",{1,1},unicode) || + OK <- OKL], + [{error,{{1,2},erl_scan,{illegal,character}},{1,3}} = + erl_scan:string("\""++[OK]++"\"",{1,1},unicode) || + OK <- IllegalL], + + [{error,{{1,1},erl_scan,{illegal,character}},{1,2}} = + erl_scan:string([Illegal],{1,1},unicode) || + Illegal <- IllegalL], + + {ok,[{char,{1,1},OK1}],{1,3}} = + erl_scan:string([$$,OK1],{1,1},unicode), + {error,{{1,1},erl_scan,{illegal,character}},{1,2}} = + erl_scan:string([$$,Illegal1],{1,1},unicode), + + {ok,[{char,{1,1},OK1}],{1,4}} = + erl_scan:string([$$,$\\,OK1],{1,1},unicode), + {error,{{1,1},erl_scan,{illegal,character}},{1,4}} = + erl_scan:string([$$,$\\,Illegal1],{1,1},unicode), + + {ok,[{string,{1,1},[55295]}],{1,5}} = + erl_scan:string("\"\\"++[OK1]++"\"",{1,1},unicode), + {error,{{1,2},erl_scan,{illegal,character}},{1,4}} = + erl_scan:string("\"\\"++[Illegal1]++"\"",{1,1},unicode), + + {ok,[{char,{1,1},OK1}],{1,10}} = + erl_scan:string("$\\x{D7FF}",{1,1},unicode), + {error,{{1,1},erl_scan,{illegal,character}},{1,10}} = + erl_scan:string("$\\x{D800}",{1,1},unicode), + + %% Not erl_scan, but erl_parse. + {integer,0,1} = erl_parse:abstract(1), + Float = 3.14, {float,0,Float} = erl_parse:abstract(Float), + {nil,0} = erl_parse:abstract([]), + {bin,0, + [{bin_element,0,{integer,0,1},default,default}, + {bin_element,0,{integer,0,2},default,default}]} = + erl_parse:abstract(<<1,2>>), + {cons,0,{tuple,0,[{atom,0,a}]},{atom,0,b}} = + erl_parse:abstract([{a} | b]), + {string,0,"str"} = erl_parse:abstract("str"), + {cons,0, + {integer,0,$a}, + {cons,0,{integer,0,1024},{string,0,"c"}}} = + erl_parse:abstract("a"++[1024]++"c"), + + Line = 17, + {integer,Line,1} = erl_parse:abstract(1, Line), + Float = 3.14, {float,Line,Float} = erl_parse:abstract(Float, Line), + {nil,Line} = erl_parse:abstract([], Line), + {bin,Line, + [{bin_element,Line,{integer,Line,1},default,default}, + {bin_element,Line,{integer,Line,2},default,default}]} = + erl_parse:abstract(<<1,2>>, Line), + {cons,Line,{tuple,Line,[{atom,Line,a}]},{atom,Line,b}} = + erl_parse:abstract([{a} | b], Line), + {string,Line,"str"} = erl_parse:abstract("str", Line), + {cons,Line, + {integer,Line,$a}, + {cons,Line,{integer,Line,1024},{string,Line,"c"}}} = + erl_parse:abstract("a"++[1024]++"c", Line), + + Opts1 = [{line,17}], + {integer,Line,1} = erl_parse:abstract(1, Opts1), + Float = 3.14, {float,Line,Float} = erl_parse:abstract(Float, Opts1), + {nil,Line} = erl_parse:abstract([], Opts1), + {bin,Line, + [{bin_element,Line,{integer,Line,1},default,default}, + {bin_element,Line,{integer,Line,2},default,default}]} = + erl_parse:abstract(<<1,2>>, Opts1), + {cons,Line,{tuple,Line,[{atom,Line,a}]},{atom,Line,b}} = + erl_parse:abstract([{a} | b], Opts1), + {string,Line,"str"} = erl_parse:abstract("str", Opts1), + {cons,Line, + {integer,Line,$a}, + {cons,Line,{integer,Line,1024},{string,Line,"c"}}} = + erl_parse:abstract("a"++[1024]++"c", Opts1), + + [begin + {integer,Line,1} = erl_parse:abstract(1, Opts2), + Float = 3.14, {float,Line,Float} = erl_parse:abstract(Float, Opts2), + {nil,Line} = erl_parse:abstract([], Opts2), + {bin,Line, + [{bin_element,Line,{integer,Line,1},default,default}, + {bin_element,Line,{integer,Line,2},default,default}]} = + erl_parse:abstract(<<1,2>>, Opts2), + {cons,Line,{tuple,Line,[{atom,Line,a}]},{atom,Line,b}} = + erl_parse:abstract([{a} | b], Opts2), + {string,Line,"str"} = erl_parse:abstract("str", Opts2), + {string,Line,[97,1024,99]} = + erl_parse:abstract("a"++[1024]++"c", Opts2) + end || Opts2 <- [[{encoding,unicode},{line,Line}], + [{encoding,utf8},{line,Line}]]], + + {cons,0, + {integer,0,97}, + {cons,0,{integer,0,1024},{string,0,"c"}}} = + erl_parse:abstract("a"++[1024]++"c", [{encoding,latin1}]), + ok. + test_string(String, Expected) -> {ok, Expected, _End} = erl_scan:string(String), test(String). diff --git a/lib/stdlib/test/escript_SUITE.erl b/lib/stdlib/test/escript_SUITE.erl index 5b592c65cc..7634c21a17 100644 --- a/lib/stdlib/test/escript_SUITE.erl +++ b/lib/stdlib/test/escript_SUITE.erl @@ -34,7 +34,8 @@ create_and_extract/1, foldl/1, overflow/1, - verify_sections/3 + verify_sections/3, + unicode/1 ]). -include_lib("test_server/include/test_server.hrl"). @@ -46,7 +47,7 @@ all() -> [basic, errors, strange_name, emulator_flags, module_script, beam_script, archive_script, epp, create_and_extract, foldl, overflow, - archive_script_file_access]. + archive_script_file_access, unicode]. groups() -> []. @@ -810,6 +811,8 @@ normalize_sections(Sections) -> end. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + + foldl(Config) when is_list(Config) -> {NewFile, _FileInfo, _EmuArg, _Source, @@ -887,6 +890,20 @@ emulate_escript_foldl(Fun, Acc, File) -> {error, Reason} end. +unicode(Config) when is_list(Config) -> + Data = ?config(data_dir, Config), + Dir = filename:absname(Data), %Get rid of trailing slash. + run(Dir, "unicode1", + [<<"escript: exception error: an error occurred when evaluating" + " an arithmetic expression\n in operator '/'/2\n " + "called as <<170>> / <<170>>\nExitCode:127">>]), + run(Dir, "unicode2", + [<<"escript: exception error: an error occurred when evaluating" + " an arithmetic expression\n in operator '/'/2\n " + "called as <<\"\xaa\">> / <<\"\xaa\">>\nExitCode:127">>]), + run(Dir, "unicode3", [<<"ExitCode:0">>]), + ok. + %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% overflow(Config) when is_list(Config) -> diff --git a/lib/stdlib/test/escript_SUITE_data/unicode1 b/lib/stdlib/test/escript_SUITE_data/unicode1 new file mode 100755 index 0000000000..a77574625e --- /dev/null +++ b/lib/stdlib/test/escript_SUITE_data/unicode1 @@ -0,0 +1,14 @@ +#!/usr/bin/env escript +%% -*- erlang -*- + +-export([main/1]). + +main(_) -> + ok = io:setopts([{encoding,unicode}]), + _D = erlang:system_flag(backtrace_depth, 0), + A = <<"\x{aa}">>, + S = lists:flatten(io_lib:format("~p/~p.", [A, A])), + {ok, Ts, _} = erl_scan:string(S, 1, [unicode]), + {ok, Es} = erl_parse:parse_exprs(Ts), + B = erl_eval:new_bindings(), + erl_eval:exprs(Es, B). diff --git a/lib/stdlib/test/escript_SUITE_data/unicode2 b/lib/stdlib/test/escript_SUITE_data/unicode2 new file mode 100755 index 0000000000..495188f6f0 --- /dev/null +++ b/lib/stdlib/test/escript_SUITE_data/unicode2 @@ -0,0 +1,14 @@ +#!/usr/bin/env escript +%% -*- erlang -*- + +-export([main/1]). + +main(_) -> + ok = io:setopts([{encoding,latin1}]), + _D = erlang:system_flag(backtrace_depth, 0), + A = <<"\x{aa}">>, + S = lists:flatten(io_lib:format("~p/~p.", [A, A])), + {ok, Ts, _} = erl_scan:string(S, 1, [unicode]), + {ok, Es} = erl_parse:parse_exprs(Ts), + B = erl_eval:new_bindings(), + erl_eval:exprs(Es, B). diff --git a/lib/stdlib/test/escript_SUITE_data/unicode3 b/lib/stdlib/test/escript_SUITE_data/unicode3 new file mode 100755 index 0000000000..944487dcae --- /dev/null +++ b/lib/stdlib/test/escript_SUITE_data/unicode3 @@ -0,0 +1,13 @@ +#!/usr/bin/env escript +%% -*- erlang; coding: utf-8 -*- + +-export([main/1]). + +main(_) -> + ok = io:setopts([{encoding,unicode}]), + Bin1 = <<"örn_Ѐ שלום-שלום+של 日本語">>, + + L = [246,114,110,95,1024,32,1513,1500,1493,1501,45,1513,1500,1493, + 1501,43,1513,1500,32,26085,26412,35486], + L = unicode:characters_to_list(Bin1, utf8), + ok. diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl index 74fcdcc7d2..4f030053aa 100644 --- a/lib/stdlib/test/io_SUITE.erl +++ b/lib/stdlib/test/io_SUITE.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2011. All Rights Reserved. +%% Copyright Ericsson AB 1999-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -28,7 +28,7 @@ manpage/1, otp_6708/1, otp_7084/1, otp_7421/1, io_lib_collect_line_3_wb/1, cr_whitespace_in_string/1, io_fread_newlines/1, otp_8989/1, io_lib_fread_literal/1, - io_lib_print_binary_depth_one/1]). + io_lib_print_binary_depth_one/1, otp_10302/1]). %-define(debug, true). @@ -64,7 +64,7 @@ all() -> manpage, otp_6708, otp_7084, otp_7421, io_lib_collect_line_3_wb, cr_whitespace_in_string, io_fread_newlines, otp_8989, io_lib_fread_literal, - io_lib_print_binary_depth_one]. + io_lib_print_binary_depth_one, otp_10302]. groups() -> []. @@ -2034,3 +2034,44 @@ io_lib_print_binary_depth_one(Suite) when is_list(Suite) -> ?line "<<...>>" = fmt("~W", [<<1:7>>, 1]), ?line "<<...>>" = fmt("~P", [<<1:7>>, 1]), ok. + +otp_10302(doc) -> + "OTP-10302. Unicode"; +otp_10302(Suite) when is_list(Suite) -> + "\"\x{400}\"" = pretty("\x{400}", -1), + "<<\"\x{400}\"/utf8>>" = pretty(<<"\x{400}"/utf8>>, -1), + + "<<\"\x{400}foo\"/utf8>>" = pretty(<<"\x{400}foo"/utf8>>, 2), + "<<\"�ppl\"/utf8>>" = pretty(<<"�ppl"/utf8>>, 2), + "<<\"�ppl\"/utf8...>>" = pretty(<<"�pple"/utf8>>, 2), + "<<\"apel\">>" = pretty(<<"apel">>, 2), + "<<\"apel\"...>>" = pretty(<<"apelsin">>, 2), + "<<228,112,112,108>>" = fmt("~tp", [<<"�ppl">>]), + "<<228,...>>" = fmt("~tP", [<<"�ppl">>, 2]), + + Chars = lists:seq(0, 512), % just a few... + [] = [C || C <- Chars, S <- io_lib:write_unicode_char_as_latin1(C), + not is_latin1(S)], + L1 = [S || C <- Chars, S <- io_lib:write_unicode_char(C), + not is_latin1(S)], + L1 = lists:seq(256, 512), + + [] = [C || C <- Chars, S <- io_lib:write_unicode_string_as_latin1([C]), + not is_latin1(S)], + L2 = [S || C <- Chars, S <- io_lib:write_unicode_string([C]), + not is_latin1(S)], + L2 = lists:seq(256, 512), + + ok. + +pretty(Term, Depth) when is_integer(Depth) -> + Opts = [{column, 1}, {line_length, 20}, + {depth, Depth}, {max_chars, 60}, + {encoding, unicode}], + pretty(Term, Opts); +pretty(Term, Opts) when is_list(Opts) -> + R = io_lib_pretty:print(Term, Opts), + lists:flatten(io_lib:format("~ts", [R])). + +is_latin1(S) -> + S >= 0 andalso S =< 255. diff --git a/lib/stdlib/test/io_proto_SUITE.erl b/lib/stdlib/test/io_proto_SUITE.erl index 17e69f7c1c..299daf0e42 100644 --- a/lib/stdlib/test/io_proto_SUITE.erl +++ b/lib/stdlib/test/io_proto_SUITE.erl @@ -736,7 +736,7 @@ binary_options(Config) when is_list(Config) -> {getline_re, ".*<<\"hej\\\\n\">>"}, {putline, "io:get_line('')."}, {putline, binary_to_list(<<"\345\344\366"/utf8>>)}, - {getline_re, ".*<<\""++binary_to_list(unicode:characters_to_binary(<<"\345\344\366"/utf8>>,latin1,utf8))++"\\\\n\">>"} + {getline_re, ".*<<\""++binary_to_list(<<"\345\344\366"/utf8>>)++"\\\\n\"/utf8>>"} ],[],[],"-oldshell"), ok. diff --git a/lib/stdlib/test/shell_SUITE.erl b/lib/stdlib/test/shell_SUITE.erl index d49416c150..a32f846bd2 100644 --- a/lib/stdlib/test/shell_SUITE.erl +++ b/lib/stdlib/test/shell_SUITE.erl @@ -29,7 +29,7 @@ progex_bit_syntax/1, progex_records/1, progex_lc/1, progex_funs/1, otp_5990/1, otp_6166/1, otp_6554/1, otp_6785/1, - otp_7184/1, otp_7232/1, otp_8393/1]). + otp_7184/1, otp_7232/1, otp_8393/1, otp_10302/1]). -export([ start_restricted_from_shell/1, start_restricted_on_command_line/1,restricted_local/1]). @@ -93,7 +93,7 @@ groups() -> progex_funs]}, {tickets, [], [otp_5990, otp_6166, otp_6554, otp_6785, otp_7184, - otp_7232, otp_8393]}]. + otp_7232, otp_8393, otp_10302]}]. init_per_suite(Config) -> Config. @@ -108,7 +108,7 @@ end_per_group(_GroupName, Config) -> Config. --record(state, {bin, reply, leader}). +-record(state, {bin, reply, leader, unic = latin1}). start_restricted_from_shell(doc) -> @@ -374,15 +374,18 @@ records(Config) when is_list(Config) -> MS = ?MODULE_STRING, RR1 = "rr(" ++ MS ++ "). #state{}.", ?line "[state]\n" - "#state{bin = undefined,reply = undefined,leader = undefined}.\n" = + "#state{bin = undefined,reply = undefined,leader = undefined,\n" + " unic = latin1}.\n" = t(RR1), RR2 = "rr(" ++ MS ++ ",[state]). #state{}.", ?line "[state]\n" - "#state{bin = undefined,reply = undefined,leader = undefined}.\n" = + "#state{bin = undefined,reply = undefined,leader = undefined,\n" + " unic = latin1}.\n" = t(RR2), RR3 = "rr(" ++ MS ++ ",'_'). #state{}.", ?line "[state]\n" - "#state{bin = undefined,reply = undefined,leader = undefined}.\n" = + "#state{bin = undefined,reply = undefined,leader = undefined,\n" + " unic = latin1}.\n" = t(RR3), RR4 = "rr(" ++ MS ++ ", '_', {d,test1}).", ?line [[state]] = scan(RR4), @@ -2748,6 +2751,143 @@ prompt_err(B) -> S = string:strip(S2, both, $"), string:strip(S, right, $.). +otp_10302(doc) -> + "OTP-10302. Unicode."; +otp_10302(suite) -> []; +otp_10302(Config) when is_list(Config) -> + Test1 = + <<"begin + io:setopts([{encoding,utf8}]), + [1024] = \"\\x{400}\", + rd(rec, {a = \"\\x{400}\"}), + ok = rl(rec) + end.">>, + "-record(rec,{a = \"\x{400}\"}).\nok.\n" = t(Test1), + + Test3 = + <<"io:setopts([{encoding,utf8}]). + rd(rec, {a = \"\\x{400}\"}). + ok = rp(#rec{}).">>, + "ok.\nrec\n#rec{a = \"\x{400}\"}.\nok.\n" = t(Test3), + + Test4 = + <<"io:setopts([{encoding,utf8}]). + A = [1024] = \"\\x{400}\". + b(). + h().">>, + + "ok.\n\"\x{400}\"\nA = \"\x{400}\".\nok.\n" + "1: io:setopts([{encoding,utf8}])\n-> ok.\n" + "2: A = [1024] = \"\x{400}\"\n-> \"\x{400}\"\n" + "3: b()\n-> ok.\nok.\n" = t(Test4), + + Test5 = + <<"begin + io:setopts([{encoding,utf8}]), + results(0), + A = [1024] = \"\\x{400}\", + b(), + h() + end.">>, + "A = \"\x{400}\".\nok.\n" = t(Test5), + + %% One $" is "lost": + true = + "\x{400}\": command not found" =:= + prompt_err({<<"io:setopts([{encoding,utf8}]). v(\"\x{400}\")."/utf8>>, + unicode}), + + "ok.\ndefault\n* Bad prompt function: \"\x{400}\".\n" = + t({<<"io:setopts([{encoding,utf8}]). " + "shell:prompt_func(\"\x{400}\")."/utf8>>, + unicode}), + _ = shell:prompt_func(default), + + %% Test lib:format_exception() (cf. OTP-6554) + Test6 = + <<"begin + A = <<\"\\xaa\">>, + S = lists:flatten(io_lib:format(\"~p/~p.\", [A, A])), + {ok, Ts, _} = erl_scan:string(S, 1, [unicode]), + {ok, Es} = erl_parse:parse_exprs(Ts), + B = erl_eval:new_bindings(), + erl_eval:exprs(Es, B) + end.">>, + + "** exception error: an error occurred when evaluating" + " an arithmetic expression\n in operator '/'/2\n" + " called as <<\"\xaa\">> / <<\"\xaa\">>.\n" = t(Test6), + Test7 = + <<"io:setopts([{encoding,utf8}]). + A = <<\"\\xaa\">>, + S = lists:flatten(io_lib:format(\"~p/~p.\", [A, A])), + {ok, Ts, _} = erl_scan:string(S, 1, [unicode]), + {ok, Es} = erl_parse:parse_exprs(Ts), + B = erl_eval:new_bindings(), + erl_eval:exprs(Es, B).">>, + + "ok.\n** exception error: an error occurred when evaluating" + " an arithmetic expression\n in operator '/'/2\n" + " called as <<170>> / <<170>>.\n" = t(Test7), + Test8 = + <<"begin + A = [1089], + S = lists:flatten(io_lib:format(\"~tp/~tp.\", [A, A])), + {ok, Ts, _} = erl_scan:string(S, 1, [unicode]), + {ok, Es} = erl_parse:parse_exprs(Ts), + B = erl_eval:new_bindings(), + erl_eval:exprs(Es, B) + end.">>, + "** exception error: an error occurred when evaluating" + " an arithmetic expression\n in operator '/'/2\n" + " called as [1089] / [1089].\n" = t(Test8), + Test9 = + <<"io:setopts([{encoding,utf8}]). + A = [1089], + S = lists:flatten(io_lib:format(\"~tp/~tp.\", [A, A])), + {ok, Ts, _} = erl_scan:string(S, 1, [unicode]), + {ok, Es} = erl_parse:parse_exprs(Ts), + B = erl_eval:new_bindings(), + erl_eval:exprs(Es, B).">>, + + "ok.\n** exception error: an error occurred when evaluating" + " an arithmetic expression\n in operator '/'/2\n" + " called as \"\x{441}\" / \"\x{441}\".\n" = t(Test9), + Test10 = + <<"A = {\"1\\xaa\", + $\\xaa, + << <<\"hi\">>/binary >>, + <<\"1\xaa\">>}, + fun(a) -> true end(A).">>, + "** exception error: no function clause matching \n" + " erl_eval:'-inside-an-interpreted-fun-'" + "({\"1\xc2\xaa\",170,<<\"hi\">>,\n " + " <<\"1\xc2\xaa\">>}) .\n" = t(Test10), + Test11 = + <<"io:setopts([{encoding,utf8}]). + A = {\"1\\xaa\", + $\\xaa, + << <<\"hi\">>/binary >>, + <<\"1\xaa\">>}, + fun(a) -> true end(A).">>, + + "ok.\n** exception error: no function clause matching \n" + " erl_eval:'-inside-an-interpreted-fun-'" + "({\"1\xaa\",170,<<\"hi\">>,\n " + " <<\"1\xaa\"/utf8>>}) .\n" = t(Test11), + Test12 = <<"fun(a, b) -> false end(65, [1089]).">>, + "** exception error: no function clause matching \n" + " erl_eval:'-inside-an-interpreted-fun-'(65,[1089])" + " .\n" = t(Test12), + Test13 = + <<"io:setopts([{encoding,utf8}]). + fun(a, b) -> false end(65, [1089]).">>, + "ok.\n** exception error: no function clause matching \n" + " erl_eval:'-inside-an-interpreted-fun-'(65,\"\x{441}\")" + " .\n" = t(Test13), + + ok. + scan(B) -> F = fun(Ts) -> case erl_parse:parse_term(Ts) of @@ -2761,7 +2901,7 @@ scan(B) -> scan(t(B), F). scan(S0, F) -> - case erl_scan:tokens([], S0, 1) of + case erl_scan:tokens([], S0, 1, [unicode]) of {done,{ok,Ts,_},S} -> [F(Ts) | scan(S, F)]; _Else -> @@ -2769,29 +2909,36 @@ scan(S0, F) -> end. t({Node,Bin}) when is_atom(Node),is_binary(Bin) -> - t0(Bin, fun() -> start_new_shell(Node) end); + t0({Bin,latin1}, fun() -> start_new_shell(Node) end); t(Bin) when is_binary(Bin) -> - t0(Bin, fun() -> start_new_shell() end); + t0({Bin,latin1}, fun() -> start_new_shell() end); +t({Bin,Enc}) when is_binary(Bin), is_atom(Enc) -> + t0({Bin,Enc}, fun() -> start_new_shell() end); t(L) -> t(list_to_binary(L)). -t0(Bin, F) -> +t0({Bin,Enc}, F) -> %% Spawn a process so that io_request messages do not interfer. P = self(), - C = spawn(fun() -> t1(P, Bin, F) end), + C = spawn(fun() -> t1(P, {Bin, Enc}, F) end), receive {C, R} -> R end. -t1(Parent, Bin, F) -> - %% io:format("*** Testing ~s~n", [binary_to_list(Bin)]), - S = #state{bin = Bin, reply = [], leader = group_leader()}, +t1(Parent, {Bin,Enc}, F) -> + io:format("*** Testing ~s~n", [binary_to_list(Bin)]), + S = #state{bin = Bin, unic = Enc, reply = [], leader = group_leader()}, group_leader(self(), self()), _Shell = F(), try server_loop(S) catch exit:R -> Parent ! {self(), R}; - throw:{?MODULE,LoopReply} -> + throw:{?MODULE,LoopReply,latin1} -> L0 = binary_to_list(list_to_binary(LoopReply)), [$\n | L1] = lists:dropwhile(fun(X) -> X =/= $\n end, L0), + Parent ! {self(), dotify(L1)}; + throw:{?MODULE,LoopReply,_Uni} -> + Tmp = unicode:characters_to_binary(LoopReply), + L0 = unicode:characters_to_list(Tmp), + [$\n | L1] = lists:dropwhile(fun(X) -> X =/= $\n end, L0), Parent ! {self(), dotify(L1)} after group_leader(S#state.leader, self()) end. @@ -2835,7 +2982,7 @@ do_io_request(Req, From, S, ReplyAs) -> case io_requests([Req], [], S) of {_Status,{eof,_},S1} -> io_reply(From, ReplyAs, {error,terminated}), - throw({?MODULE,S1#state.reply}); + throw({?MODULE,S1#state.reply,S1#state.unic}); {_Status,Reply,S1} -> io_reply(From, ReplyAs, Reply), S1 @@ -2858,13 +3005,34 @@ io_requests([], [Rs|Cont], S) -> io_requests([], [], S) -> {ok,ok,S}. +io_request({setopts, Opts}, S) -> + #state{unic = OldEnc, bin = Bin} = S, + NewEnc = case proplists:get_value(encoding, Opts) of + undefined -> OldEnc; + utf8 -> unicode; + New -> New + end, + NewBin = case {OldEnc, NewEnc} of + {E, E} -> Bin; + {latin1, _} -> + unicode:characters_to_binary(Bin, latin1, unicode); + {_, latin1} -> + unicode:characters_to_binary(Bin, unicode, latin1); + {_, _} -> Bin + end, + {ok, ok, S#state{unic = NewEnc, bin = NewBin}}; +io_request(getopts, S) -> + {ok,[{encoding,S#state.unic}],S}; io_request({get_geometry,columns}, S) -> {ok,80,S}; io_request({get_geometry,rows}, S) -> {ok,24,S}; io_request({put_chars,Chars}, S) -> {ok,ok,S#state{reply = [S#state.reply | Chars]}}; -io_request({put_chars,_,Chars}, S) -> +io_request({put_chars,latin1,Chars}, S) -> + {ok,ok,S#state{reply = [S#state.reply | Chars]}}; +io_request({put_chars,unicode,Chars0}, S) -> + Chars = unicode:characters_to_list(Chars0), {ok,ok,S#state{reply = [S#state.reply | Chars]}}; io_request({put_chars,Mod,Func,Args}, S) -> case catch apply(Mod, Func, Args) of @@ -2890,9 +3058,12 @@ get_until_loop(M, F, As, S, {more,Cont}, Enc) -> 0 -> get_until_loop(M, F, As, S, catch apply(M, F, [Cont,eof|As]), Enc); + _ when S#state.unic =:= latin1 -> + get_until_loop(M, F, As, S#state{bin = <<>>}, + catch apply(M, F, [Cont,binary_to_list(Bin)|As]), Enc); _ -> get_until_loop(M, F, As, S#state{bin = <<>>}, - catch apply(M, F, [Cont,binary_to_list(Bin)|As]), Enc) + catch apply(M, F, [Cont,unicode:characters_to_list(Bin)|As]), Enc) end; get_until_loop(_M, _F, _As, S, {done,Res,Buf}, Enc) -> {ok,Res,S#state{bin = buf2bin(Buf, Enc)}}; @@ -2903,6 +3074,8 @@ buf2bin(eof,_) -> <<>>; buf2bin(Buf,latin1) -> list_to_binary(Buf); +buf2bin(Buf,utf8) -> + unicode:characters_to_binary(Buf,unicode,unicode); buf2bin(Buf,unicode) -> unicode:characters_to_binary(Buf,unicode,unicode). diff --git a/lib/syntax_tools/src/epp_dodger.erl b/lib/syntax_tools/src/epp_dodger.erl index b3ced34c14..70395848a1 100644 --- a/lib/syntax_tools/src/epp_dodger.erl +++ b/lib/syntax_tools/src/epp_dodger.erl @@ -186,6 +186,7 @@ quick_parse_file(File, Options) -> parse_file(File, Parser, Options) -> case file:open(File, [read]) of {ok, Dev} -> + _ = epp:set_encoding(Dev), try Parser(Dev, 1, Options) after ok = file:close(Dev) end; @@ -400,7 +401,7 @@ quick_parse_form(Dev, L0, Options) -> parse_form(Dev, L0, Parser, Options) -> NoFail = proplists:get_bool(no_fail, Options), Opt = #opt{clever = proplists:get_bool(clever, Options)}, - case io:scan_erl_form(Dev, "", L0) of + case io:scan_erl_form(Dev, "", L0, [unicode]) of {ok, Ts, L1} -> case catch {ok, Parser(Ts, Opt)} of {'EXIT', Term} -> @@ -419,6 +420,7 @@ parse_form(Dev, L0, Parser, Options) -> {ok, F, L1} end; {error, _IoErr, _L1} = Err -> Err; + {error, _Reason} -> {eof, L0}; % This is probably encoding problem {eof, _L1} = Eof -> Eof end. diff --git a/lib/syntax_tools/src/erl_comment_scan.erl b/lib/syntax_tools/src/erl_comment_scan.erl index b833e1c069..a70e7ba413 100644 --- a/lib/syntax_tools/src/erl_comment_scan.erl +++ b/lib/syntax_tools/src/erl_comment_scan.erl @@ -72,7 +72,17 @@ file(Name) -> {ok, V} -> case V of {ok, B} -> - string(binary_to_list(B)); + Enc = case epp:read_encoding(Name) of + none -> epp:default_encoding(); + Enc0 -> Enc0 + end, + case catch unicode:characters_to_list(B, Enc) of + String when is_list(String) -> + string(String); + R -> + error_read_file(Name1), + exit(R) + end; {error, E} -> error_read_file(Name1), exit({read, E}) diff --git a/lib/syntax_tools/src/erl_prettypr.erl b/lib/syntax_tools/src/erl_prettypr.erl index f4bbf975c3..577dd21a77 100644 --- a/lib/syntax_tools/src/erl_prettypr.erl +++ b/lib/syntax_tools/src/erl_prettypr.erl @@ -60,7 +60,9 @@ hook = ?NOHOOK :: hook(), paper = ?PAPER :: integer(), ribbon = ?RIBBON :: integer(), - user = ?NOUSER :: term()}). + user = ?NOUSER :: term(), + encoding = epp:default_encoding() :: epp:source_encoding()}). + -type context() :: #ctxt{}. %% ===================================================================== @@ -231,6 +233,8 @@ format(Node) -> %% <dt>{user, term()}</dt> %% <dd>User-specific data for use in hook functions. The default %% value is `undefined'.</dd> +%% <dt>{encoding, epp:source_encoding()}</dt> +%% <dd>Specifies the encoding of the generated file.</dd> %% </dl> %% %% A hook function (cf. the {@link hook()} type) is passed the current @@ -342,7 +346,9 @@ layout(Node, Options) -> #ctxt{hook = proplists:get_value(hook, Options, ?NOHOOK), paper = proplists:get_value(paper, Options, ?PAPER), ribbon = proplists:get_value(ribbon, Options, ?RIBBON), - user = proplists:get_value(user, Options)}). + user = proplists:get_value(user, Options), + encoding = proplists:get_value(encoding, Options, + epp:default_encoding())}). lay(Node, Ctxt) -> case erl_syntax:get_ann(Node) of @@ -445,10 +451,10 @@ lay_2(Node, Ctxt) -> text(tidy_float(erl_syntax:float_literal(Node))); char -> - text(erl_syntax:char_literal(Node)); + text(erl_syntax:char_literal(Node, Ctxt#ctxt.encoding)); string -> - lay_string(erl_syntax:string_literal(Node), Ctxt); + lay_string(erl_syntax:string_literal(Node, Ctxt#ctxt.encoding), Ctxt); nil -> text("[]"); diff --git a/lib/syntax_tools/src/erl_syntax.erl b/lib/syntax_tools/src/erl_syntax.erl index 151f04b03b..93b9dc54dd 100644 --- a/lib/syntax_tools/src/erl_syntax.erl +++ b/lib/syntax_tools/src/erl_syntax.erl @@ -161,6 +161,7 @@ is_char/2, char_value/1, char_literal/1, + char_literal/2, clause/2, clause/3, clause_body/1, @@ -271,6 +272,7 @@ is_string/2, string_value/1, string_literal/1, + string_literal/2, text/1, text_string/1, try_expr/2, @@ -1628,6 +1630,7 @@ float_literal(Node) -> %% %% @see char_value/1 %% @see char_literal/1 +%% @see char_literal/2 %% @see is_char/2 %% type(Node) = char @@ -1687,13 +1690,34 @@ char_value(Node) -> %% ===================================================================== %% @doc Returns the literal string represented by a `char' %% node. This includes the leading "`$'" character. +%% Characters beyond 255 will be escaped. %% %% @see char/1 -spec char_literal(syntaxTree()) -> nonempty_string(). char_literal(Node) -> - io_lib:write_char(char_value(Node)). + char_literal(Node, latin1). + + +%% ===================================================================== +%% @doc Returns the literal string represented by a `char' +%% node. This includes the leading "`$'" character. +%% Depending on the encoding a character beyond 255 will be escaped +%% ('latin1') or copied as is ('utf8'). +%% +%% @see char/1 + +-type encoding() :: 'utf8' | 'unicode' | 'latin1'. + +-spec char_literal(syntaxTree(), encoding()) -> nonempty_string(). + +char_literal(Node, unicode) -> + io_lib:write_unicode_char(char_value(Node)); +char_literal(Node, utf8) -> + io_lib:write_unicode_char(char_value(Node)); +char_literal(Node, latin1) -> + io_lib:write_unicode_char_as_latin1(char_value(Node)). %% ===================================================================== @@ -1708,6 +1732,7 @@ char_literal(Node) -> %% %% @see string_value/1 %% @see string_literal/1 +%% @see string_literal/2 %% @see is_string/2 %% @see char/1 @@ -1768,13 +1793,32 @@ string_value(Node) -> %% ===================================================================== %% @doc Returns the literal string represented by a `string' %% node. This includes surrounding double-quote characters. +%% Characters beyond 255 will be escaped. %% %% @see string/1 -spec string_literal(syntaxTree()) -> nonempty_string(). string_literal(Node) -> - io_lib:write_string(string_value(Node)). + string_literal(Node, latin1). + + +%% ===================================================================== +%% @doc Returns the literal string represented by a `string' +%% node. This includes surrounding double-quote characters. +%% Depending on the encoding characters beyond 255 will be escaped +%% ('latin1') or copied as is ('utf8'). +%% +%% @see string/1 + +-spec string_literal(syntaxTree(), encoding()) -> nonempty_string(). + +string_literal(Node, utf8) -> + io_lib:write_unicode_string(string_value(Node)); +string_literal(Node, unicode) -> + io_lib:write_unicode_string(string_value(Node)); +string_literal(Node, latin1) -> + io_lib:write_unicode_string_as_latin1(string_value(Node)). %% ===================================================================== diff --git a/lib/syntax_tools/src/erl_tidy.erl b/lib/syntax_tools/src/erl_tidy.erl index 59cf6c0a92..e9a88caff3 100644 --- a/lib/syntax_tools/src/erl_tidy.erl +++ b/lib/syntax_tools/src/erl_tidy.erl @@ -375,6 +375,8 @@ write_module(Tree, Name, Opts) -> end, filename(filename:join(Dir, Name1)) end, + Encoding = [{encoding,Enc} || Enc <- [epp:read_encoding(Name)], + Enc =/= none], case proplists:get_bool(backups, Opts) of true -> backup_file(File, Opts); @@ -382,9 +384,9 @@ write_module(Tree, Name, Opts) -> ok end, Printer = proplists:get_value(printer, Opts), - FD = open_output_file(File), + FD = open_output_file(File, Encoding), verbose("writing to file `~s'.", [File], Opts), - V = (catch {ok, output(FD, Printer, Tree, Opts)}), + V = (catch {ok, output(FD, Printer, Tree, Opts++Encoding)}), ok = file:close(FD), case V of {ok, _} -> @@ -432,8 +434,9 @@ file_type(Name, Links) -> throw(R) end. -open_output_file(FName) -> - case catch file:open(FName, [write]) of +open_output_file(FName, Options) -> +io:format("Options ~p~n", [Options]), + case catch file:open(FName, [write]++Options) of {ok, FD} -> FD; {error, R} -> diff --git a/lib/syntax_tools/src/igor.erl b/lib/syntax_tools/src/igor.erl index 37e561cbbe..8abc3f41cb 100644 --- a/lib/syntax_tools/src/igor.erl +++ b/lib/syntax_tools/src/igor.erl @@ -341,10 +341,12 @@ merge(Name, Files) -> merge(Name, Files, Opts) -> Opts1 = Opts ++ ?DEFAULT_MERGE_OPTS, - {Tree, Stubs} = merge_files(Name, Files, Opts1), + {Sources, Enc} = merge_files1(Files, Opts1), + {Tree, Stubs} = merge_sources(Name, Sources, Opts1), Dir = proplists:get_value(dir, Opts1, ""), Filename = proplists:get_value(outfile, Opts1, Name), - File = write_module(Tree, Filename, Dir, Opts1), + Encoding = [{encoding, Enc} || Enc =/= none], + File = write_module(Tree, Filename, Dir, Encoding ++ Opts1), [File | maybe_create_stubs(Stubs, Opts1)]. @@ -459,16 +461,21 @@ merge_files(Name, Files, Options) -> -spec merge_files(atom(), erl_syntax:forms(), [file:filename()], [option()]) -> {erl_syntax:syntaxTree(), [stubDescriptor()]}. -merge_files(_, _Trees, [], _) -> +merge_files(Name, Trees, Files, Opts) -> + {Sources, _Encoding} = merge_files1(Files, Opts), + merge_sources(Name, Trees ++ Sources, Opts). + +merge_files1([], _) -> report_error("no files to merge."), exit(badarg); -merge_files(Name, Trees, Files, Opts) -> +merge_files1(Files, Opts) -> Opts1 = Opts ++ [{includes, ?DEFAULT_INCLUDES}, {macros, ?DEFAULT_MACROS}, {preprocess, false}, comments], - Sources = [read_module(F, Opts1) || F <- Files], - merge_sources(Name, Trees ++ Sources, Opts1). + SourceEncodings = [read_module(F, Opts1) || F <- Files], + {Sources, [Encoding | _]} = lists:unzip(SourceEncodings), + {Sources, Encoding}. %% ===================================================================== @@ -2512,7 +2519,11 @@ rename(Files, Renamings, Opts) -> lists:flatmap(fun (F) -> rename_file(F, Dict, Opts1) end, Files). rename_file(File, Dict, Opts) -> - S = read_module(File, Opts), + {S, Enc} = read_module(File, Opts), + %% Try to avoid *two* coding: comments: + Encoding = [{encoding, Enc} || + Enc =/= none, + not proplists:get_bool(comments, Opts)], M = get_module_info(S), Name = M#module.name, Name1 = case dict:find(Name, Dict) of @@ -2526,10 +2537,10 @@ rename_file(File, Dict, Opts) -> Opts1 = [no_headers, {export, [Name]}, {static, [Name]}, - {redirect, dict:to_list(Dict1)}] ++ Opts, + {redirect, dict:to_list(Dict1)}] ++ Encoding ++ Opts, {Tree, Stubs} = merge_sources(Name1, [S], Opts1), Dir = filename:dirname(filename(File)), - File1 = write_module(Tree, Name1, Dir, Opts), + File1 = write_module(Tree, Name1, Dir, Opts++Encoding), %% We create the stub file in the same directory as the source file %% and the target file. @@ -2648,7 +2659,7 @@ error_text(D, Name) -> {L, M, E} when is_integer(L), is_atom(M) -> case catch M:format_error(E) of S when is_list(S) -> - io_lib:fwrite("`~w', line ~w: ~s.", + io_lib:fwrite("`~w', line ~w: ~ts.", [Name, L, S]); _ -> error_text_1(D, Name) @@ -2706,7 +2717,17 @@ open_output_file(FName) -> exit(R) end. -%% read_module(Name, Options) -> syntaxTree() +output_encoding(FD, Opts) -> + case proplists:get_value(encoding, Opts) of + undefined -> + ok = io:setopts(FD, [{encoding, epp:default_encoding()}]); + Encoding -> + ok = io:setopts(FD, [{encoding, Encoding}]), + EncS = epp:encoding_to_string(Encoding), + ok = io:fwrite(FD, <<"%% ~s\n">>, [EncS]) + end. + +%% read_module(Name, Options) -> {syntaxTree(), epp:source_encoding()} %% %% This also tries to locate the real source file, if "Name" does not %% point directly to a particular file. @@ -2729,20 +2750,21 @@ read_module(Name, Options) -> read_module_1(Name, Options) -> verbose("reading module `~s'.", [filename(Name)], Options), - Forms = read_module_2(Name, Options), + {Forms, Enc} = read_module_2(Name, Options), case proplists:get_bool(comments, Options) of false -> - Forms; + {Forms, Enc}; true -> Comments = erl_comment_scan:file(Name), - erl_recomment:recomment_forms(Forms, Comments) + {erl_recomment:recomment_forms(Forms, Comments), Enc} end. read_module_2(Name, Options) -> case read_module_3(Name, Options) of {ok, Forms} -> check_forms(Forms, Name), - Forms; + Enc = epp:read_encoding(Name), + {Forms, Enc}; {error, _} = Error -> error_read_file(Name), exit(Error) @@ -2772,7 +2794,7 @@ check_forms([F | Fs], File) -> _ -> "unknown error" end, - report_error("in file `~s' at line ~w:\n ~s", + report_error("in file `~s' at line ~w:\n ~ts", [filename(File), erl_syntax:get_pos(F), S]), exit(error); _ -> @@ -2847,6 +2869,7 @@ write_module(Tree, Name, Dir, Opts) -> end, Printer = proplists:get_value(printer, Opts), FD = open_output_file(File), + ok = output_encoding(FD, Opts), verbose("writing to file `~s'.", [File], Opts), V = (catch {ok, output(FD, Printer, Tree, Opts)}), ok = file:close(FD), diff --git a/lib/test_server/src/erl2html2.erl b/lib/test_server/src/erl2html2.erl index 9c459c05d4..1729257809 100644 --- a/lib/test_server/src/erl2html2.erl +++ b/lib/test_server/src/erl2html2.erl @@ -34,11 +34,17 @@ convert(File, Dest) -> %% %% FIXME: The colours should *really* be set with %% stylesheets... + Encoding = encoding(File), Header = ["<!DOCTYPE HTML PUBLIC " "\"-//W3C//DTD HTML 3.2 Final//EN\">\n" "<!-- autogenerated by '"++atom_to_list(?MODULE)++"'. -->\n" "<html>\n" - "<head><title>", File, "</title></head>\n\n" + "<head>\n" + "<meta http-equiv=\"Content-Type\" content=\"text/html;" + "charset=", + Encoding,"\"/>\n" + "<title>", File, "</title>\n" + "</head>\n\n" "<body bgcolor=\"white\" text=\"black\"" " link=\"blue\" vlink=\"purple\" alink=\"red\">\n"], convert(File, Dest, Header). @@ -55,12 +61,12 @@ convert(File, Dest, Header) -> case file:open(Dest,[write,raw]) of {ok,DFd} -> file:write(DFd,[Header,"<pre>\n"]), - Lines = build_html(SFd,DFd,Functions), + _Lines = build_html(SFd,DFd,Functions), file:write(DFd,["</pre>\n",footer(), "</body>\n</html>\n"]), %% {_, Time2} = statistics(runtime), %% io:format("Converted ~p lines in ~.2f Seconds.~n", - %% [Lines, Time2/1000]), + %% [_Lines, Time2/1000]), file:close(SFd), file:close(DFd), ok; @@ -180,3 +186,20 @@ possibly_enhance(Str,false) -> %%% End of the file footer() -> "". + +%%%----------------------------------------------------------------- +%%% Read encoding from source file +encoding(File) -> + Encoding = + case epp:read_encoding(File) of + none -> + epp:default_encoding(); + E -> + E + end, + html_encoding(Encoding). + +html_encoding(latin1) -> + "iso-8859-1"; +html_encoding(utf8) -> + "utf-8". diff --git a/lib/tools/src/cover.erl b/lib/tools/src/cover.erl index 10f14b0a49..5a908174d7 100644 --- a/lib/tools/src/cover.erl +++ b/lib/tools/src/cover.erl @@ -2087,30 +2087,40 @@ do_analyse_to_file(Module, OutFile, ErlFile, HTML) -> case file:open(OutFile, [write]) of {ok, OutFd} -> if HTML -> - io:format(OutFd, - "<html>\n" - "<head><title>~s</title></head>" - "<body bgcolor=white text=black>\n" - "<pre>\n", - [OutFile]); + Encoding = encoding(ErlFile), + Header = + ["<!DOCTYPE HTML PUBLIC " + "\"-//W3C//DTD HTML 3.2 Final//EN\">\n" + "<html>\n" + "<head>\n" + "<meta http-equiv=\"Content-Type\"" + " content=\"text/html; charset=", + Encoding,"\"/>\n" + "<title>",OutFile,"</title>\n" + "</head>" + "<body style='background-color: white;" + " color: black'>\n" + "<pre>\n"], + file:write(OutFd,Header); true -> ok end, %% Write some initial information to the output file {{Y,Mo,D},{H,Mi,S}} = calendar:local_time(), - io:format(OutFd, "File generated from ~s by COVER " - "~p-~s-~s at ~s:~s:~s~n", - [ErlFile, - Y, - string:right(integer_to_list(Mo), 2, $0), - string:right(integer_to_list(D), 2, $0), - string:right(integer_to_list(H), 2, $0), - string:right(integer_to_list(Mi), 2, $0), - string:right(integer_to_list(S), 2, $0)]), - io:format(OutFd, "~n" - "**************************************" - "**************************************" - "~n~n", []), + Timestamp = + io_lib:format("~p-~s-~s at ~s:~s:~s", + [Y, + string:right(integer_to_list(Mo), 2, $0), + string:right(integer_to_list(D), 2, $0), + string:right(integer_to_list(H), 2, $0), + string:right(integer_to_list(Mi), 2, $0), + string:right(integer_to_list(S), 2, $0)]), + file:write(OutFd, + ["File generated from ",ErlFile," by COVER ", + Timestamp,"\n\n" + "**************************************" + "**************************************" + "\n\n"]), print_lines(Module, InFd, OutFd, 1, HTML), @@ -2405,3 +2415,20 @@ pmap(Fun, [], [], Limit, Cnt, Acc) -> {'DOWN', _Ref, process, X, _} when is_pid(X) -> pmap(Fun, [], [], Limit, Cnt - 1, Acc) end. + +%%%----------------------------------------------------------------- +%%% Read encoding from source file +encoding(File) -> + Encoding = + case epp:read_encoding(File) of + none -> + epp:default_encoding(); + E -> + E + end, + html_encoding(Encoding). + +html_encoding(latin1) -> + "iso-8859-1"; +html_encoding(utf8) -> + "utf-8". |
