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-rw-r--r--lib/docbuilder/src/docb_util.erl237
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diff --git a/lib/docbuilder/src/docb_util.erl b/lib/docbuilder/src/docb_util.erl
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--- a/lib/docbuilder/src/docb_util.erl
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-%% ``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 via the world wide web at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
-%%
-%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
-%% Portions created by Ericsson are Copyright 1999-2000, Ericsson
-%% Utvecklings AB. All Rights Reserved.''
-%%
-%% $Id$
-%%
--module(docb_util).
-
--export([version/0, old_docb_dir/0, dtd_dir/0]).
--export([html_snippet/2, html_snippet/3]).
--export([lookup_option/2, lookup_option/3, lookup_options/2,
- an_option/2]).
--export([outfile/3, full_file_name/4]).
--export([message/2, message/3]).
--export([ltrim/1, rtrim/1, trim/1]).
--export([join/2]).
--export([fknidx/2]).
-
--include("docb_util.hrl").
-
-%%--DocBuilder info-----------------------------------------------------
-
-%% version() -> string()
-%% Returns the DocBuilder application version.
-version() ->
- DocbDir = code:lib_dir(docbuilder),
- case string:tokens(filename:basename(DocbDir), "-") of
- [_, Vsn] -> Vsn;
- _ -> "unknown"
- end.
-
-%% old_docb_dir() -> string()
-%% Returns the root directory of Old_DocBuilder (OTP internal).
-old_docb_dir() ->
- "/home/otp/sgml/docb".
-
-%% dtd_dir() -> string()
-%% Returns the directory where the XML DTDs are located.
-dtd_dir() ->
- DocbDir = code:lib_dir(docbuilder),
- filename:join(DocbDir, "dtd").
-
-%%--User defined HTML snippets------------------------------------------
-
-%% html_snippet(What, Opts) -> HTML
-%% html_snippet(What, Arg, Opts) -> HTML
-%% What = head | seealso
-%% HTML = string()
-html_snippet(What, Opts) ->
- case lookup_option(html_mod, Opts) of
- false -> "";
- Module ->
- case catch Module:What() of
- HTML when is_list(HTML) ->
- HTML;
- {'EXIT', {undef, _}} ->
- "";
- {'EXIT', Reason} ->
- message(warning,
- "Callback function ~p:~p() => ~p",
- [Module, What, Reason]),
- "";
- Other ->
- message(warning,
- "Callback function ~p:~p() => ~p",
- [Module, What, Other]),
- ""
- end
- end.
-html_snippet(What, Arg, Opts) ->
- case lookup_option(html_mod, Opts) of
- false -> "";
- Module ->
- case catch Module:What(Arg) of
- HTML when is_list(HTML) ->
- HTML;
- {'EXIT', {undef, _}} ->
- "";
- {'EXIT', Reason} ->
- message(warning,
- "Callback function ~p:~p(~p) => ~p",
- [Module, What, Arg, Reason]),
- "";
- Other ->
- message(warning,
- "Callback function ~p:~p(~p) => ~p",
- [Module, What, Arg, Other]),
- ""
- end
- end.
-
-%%--Option utilities----------------------------------------------------
-
-%% Opts = [{Opt,Value} | Opt]
-
-%% lookup_option(Opt, Opts) -> Value | false
-lookup_option(Opt, Opts) ->
- case lists:keyfind(Opt, 1, Opts) of
- {Opt,Value} -> Value;
- false -> false
- end.
-
-%% lookup_option(Opt, Opts, DefaultValue) -> Value | DefaultValue
-lookup_option(Opt, Opts, DefaultValue) ->
- case lookup_option(Opt,Opts) of
- false -> DefaultValue;
- Value -> Value
- end.
-
-%% lookup_options(Opt, Opts) -> [Value]
-%% Used when the same option can be defined several times and returns
-%% the (possibly empty) list of values.
-lookup_options(Opt, Opts) ->
- [V || {O, V} <- Opts, O == Opt].
-
-%% an_option(Opt, Opts) -> bool()
-an_option(Opt, Opts) ->
- lists:member(Opt, Opts).
-
-%%--File handling-------------------------------------------------------
-
-%% outfile(File0, Extension, Opts) -> File
-%% Build the full filename for where to place a resulting file.
-outfile(File0, Extension, Opts) ->
- File =
- case regexp:match(File0, "[^/]*\$") of
- {match,Start,Length} ->
- string:substr(File0, Start, Length);
- _ ->
- File0
- end,
- full_file_name(File, Extension, outdir, Opts).
-
-%% full_file_name(File, Extension, What, Opts) -> File'
-%% File = string()
-%% What = outdir | includepath
-%% Prepend the full path name.
-full_file_name(File, Extension, What, Opts) ->
- Path = lookup_option(What, Opts, ""),
- full_file_name(File, Extension, Path).
-
-full_file_name(File0, Extension, Path) ->
- File = case filename:extension(File0) of
- Extension -> File0;
- _ -> File0++Extension
- end,
-
- case File of
- [$/|_] -> File;
- [$~|_] -> File;
- _ when Path=/="" -> filename:join(Path, File);
- _ -> File
- end.
-
-%%--Messages to the user------------------------------------------------
-
-%% message(Class, Format)
-%% message(Class, Format, Values) -> ok
-%% Class = info | warning | error
-%% Format, Values -- as in io:format/2
-%% Prints a warning or error message.
-%% Call as util:message(warning, "~w is undefined", [foo]).
-message(Class, Format) ->
- message(Class, Format, []).
-message(Class, Format, Values) ->
- Prefix = case Class of
- info -> "";
- warning -> "*** Warning: ";
- error -> "*** Error: "
- end,
- case get(option_silent) of
- true when Class==warning ->
- ok;
- _ ->
- io:format(Prefix, []),
- io:format(Format, Values),
- io:nl()
- end.
-
-%%--String handling-----------------------------------------------------
-
-%% ltrim(Str) -> Str'
-%% rtrim(Str) -> Str'
-%% trim(Str) -> Str'
-%% Strips whitespace from left, right or both.
-ltrim(Str) ->
- lists:dropwhile(fun white_space/1, Str).
-rtrim(Str) ->
- lists:reverse(ltrim(lists:reverse(Str))).
-trim(Str) ->
- rtrim(ltrim(Str)).
-
-white_space($ ) -> true;
-white_space(C) when C<$ -> true;
-white_space($\n) -> true;
-white_space($\t) -> true;
-white_space(_) -> false.
-
-%% join(Strings, With) -> string()
-join([H1, H2| T], S) ->
- H1 ++ S ++ join([H2| T], S);
-join([H], _) ->
- H;
-join([], _) ->
- [].
-
-%%--Other---------------------------------------------------------------
-
-%% fknidx(FNdef0, Fn_arity_sep) -> string()
-%% Get me the function name and arity.
-fknidx(FNdef0, Fn_arity_sep) ->
- FNdef = string:strip(FNdef0),
- case string:tokens(FNdef,"(") of
- [FNdef] ->
- %% No parentheses, assume variable: remove nl:s at end,
- %% and strip blanks.
- string:strip(string:strip(FNdef, right, $\n));
- [Name0|Args0] ->
- [Args1|_] = string:tokens(string:strip(hd(Args0)), "-"),
- Arity = case Args1 of
- [$)|_] -> 0;
- _ ->
- length(string:tokens(Args1, ","))
- end,
- string:strip(Name0)++Fn_arity_sep++integer_to_list(Arity)
- end.
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