%% ===================================================================== %% This library is free software; you can redistribute it and/or modify %% it under the terms of the GNU Lesser General Public License as %% published by the Free Software Foundation; either version 2 of the %% License, or (at your option) any later version. %% %% This library is distributed in the hope that it will be useful, but %% WITHOUT ANY WARRANTY; without even the implied warranty of %% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU %% Lesser General Public License for more details. %% %% You should have received a copy of the GNU Lesser General Public %% License along with this library; if not, write to the Free Software %% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 %% USA %% %% @copyright 2003-2006 Richard Carlsson %% @author Richard Carlsson <carlsson.richard@gmail.com> %% @see edoc %% @end %% ===================================================================== %% @doc Standard doclet module for EDoc. %% Note that this is written so that it is *not* depending on edoc.hrl! %% TODO: copy "doc-files" subdirectories, recursively. %% TODO: generate summary page of TODO-notes %% TODO: generate summary page of deprecated things %% TODO: generate decent indexes over modules, methods, records, etc. -module(edoc_doclet). -export([run/2]). -import(edoc_report, [report/2, warning/2]). %% @headerfile "edoc_doclet.hrl" -include("../include/edoc_doclet.hrl"). -define(EDOC_APP, edoc). -define(DEFAULT_FILE_SUFFIX, ".html"). -define(INDEX_FILE, "index.html"). -define(OVERVIEW_FILE, "overview.edoc"). -define(OVERVIEW_SUMMARY, "overview-summary.html"). -define(MODULES_FRAME, "modules-frame.html"). -define(STYLESHEET, "stylesheet.css"). -define(IMAGE, "erlang.png"). -define(NL, "\n"). -include_lib("xmerl/include/xmerl.hrl"). %% Sources is the list of inputs in the order they were found. %% Modules are sorted lists of atoms without duplicates. (They %% usually include the data from the edoc-info file in the target %% directory, if it exists.) %% @spec (Command::doclet_gen() | doclet_toc(), edoc_context()) -> ok %% @doc Main doclet entry point. See the file <a %% href="../include/edoc_doclet.hrl">`edoc_doclet.hrl'</a> for the data %% structures used for passing parameters. %% %% Also see {@link edoc:layout/2} for layout-related options, and %% {@link edoc:get_doc/2} for options related to reading source %% files. %% %% Options: %% <dl> %% <dt>{@type {file_suffix, string()@}} %% </dt> %% <dd>Specifies the suffix used for output files. The default value is %% `".html"'. %% </dd> %% <dt>{@type {hidden, boolean()@}} %% </dt> %% <dd>If the value is `true', documentation of hidden modules and %% functions will also be included. The default value is `false'. %% </dd> %% <dt>{@type {overview, edoc:filename()@}} %% </dt> %% <dd>Specifies the name of the overview-file. By default, this doclet %% looks for a file `"overview.edoc"' in the target directory. %% </dd> %% <dt>{@type {private, boolean()@}} %% </dt> %% <dd>If the value is `true', documentation of private modules and %% functions will also be included. The default value is `false'. %% </dd> %% <dt>{@type {stylesheet, string()@}} %% </dt> %% <dd>Specifies the URI used for referencing the stylesheet. The %% default value is `"stylesheet.css"'. If an empty string is %% specified, no stylesheet reference will be generated. %% </dd> %% <dt>{@type {stylesheet_file, edoc:filename()@}} %% </dt> %% <dd>Specifies the name of the stylesheet file. By default, this %% doclet uses the file `"stylesheet.css"' in the `priv' %% subdirectory of the EDoc installation directory. The named file %% will be copied to the target directory. %% </dd> %% <dt>{@type {title, string()@}} %% </dt> %% <dd>Specifies the title of the overview-page. %% </dd> %% </dl> %% INHERIT-OPTIONS: title/2 %% INHERIT-OPTIONS: sources/5 %% INHERIT-OPTIONS: overview/4 %% INHERIT-OPTIONS: copy_stylesheet/2 %% INHERIT-OPTIONS: stylesheet/1 run(#doclet_gen{}=Cmd, Ctxt) -> gen(Cmd#doclet_gen.sources, Cmd#doclet_gen.app, Cmd#doclet_gen.modules, Ctxt); run(#doclet_toc{}=Cmd, Ctxt) -> toc(Cmd#doclet_toc.paths, Ctxt). gen(Sources, App, Modules, Ctxt) -> Dir = Ctxt#context.dir, Env = Ctxt#context.env, Options = Ctxt#context.opts, Title = title(App, Options), CSS = stylesheet(Options), {Modules1, Error} = sources(Sources, Dir, Modules, Env, Options), modules_frame(Dir, Modules1, Title, CSS), overview(Dir, Title, Env, Options), index_file(Dir, Title), edoc_lib:write_info_file(App, Modules1, Dir), copy_stylesheet(Dir, Options), copy_image(Dir), %% handle postponed error during processing of source files case Error of true -> exit(error); false -> ok end. %% NEW-OPTIONS: title %% DEFER-OPTIONS: run/2 title(App, Options) -> proplists:get_value(title, Options, if App == ?NO_APP -> "Overview"; true -> io_lib:fwrite("Application: ~s", [App]) end). %% Processing the individual source files. %% NEW-OPTIONS: file_suffix, private, hidden %% INHERIT-OPTIONS: edoc:layout/2 %% INHERIT-OPTIONS: edoc:get_doc/3 %% DEFER-OPTIONS: run/2 sources(Sources, Dir, Modules, Env, Options) -> Suffix = proplists:get_value(file_suffix, Options, ?DEFAULT_FILE_SUFFIX), Private = proplists:get_bool(private, Options), Hidden = proplists:get_bool(hidden, Options), {Ms, E} = lists:foldl(fun (Src, {Set, Error}) -> source(Src, Dir, Suffix, Env, Set, Private, Hidden, Error, Options) end, {sets:new(), false}, Sources), {[M || M <- Modules, sets:is_element(M, Ms)], E}. %% Generating documentation for a source file, adding its name to the %% set if it was successful. Errors are just flagged at this stage, %% allowing all source files to be processed even if some of them fail. source({M, Name, Path}, Dir, Suffix, Env, Set, Private, Hidden, Error, Options) -> File = filename:join(Path, Name), case catch {ok, edoc:get_doc(File, Env, Options)} of {ok, {Module, Doc}} -> check_name(Module, M, File), case ((not is_private(Doc)) orelse Private) andalso ((not is_hidden(Doc)) orelse Hidden) of true -> Text = edoc:layout(Doc, Options), Name1 = atom_to_list(M) ++ Suffix, Encoding = [{encoding,encoding(Doc)}], edoc_lib:write_file(Text, Dir, Name1, Encoding), {sets:add_element(Module, Set), Error}; false -> {Set, Error} end; R -> report("skipping source file '~ts': ~P.", [File, R, 15]), {Set, true} end. check_name(M, M0, File) -> N = M, N0 = M0, case N of [$? | _] -> %% A module name of the form '?...' is assumed to be caused %% by the epp_dodger parser when the module declaration has %% the form '-module(?MACRO).'; skip the filename check. ok; _ -> if N =/= N0 -> warning("file '~ts' actually contains module '~s'.", [File, M]); true -> ok end end, ok. %% Creating an index file, with some frames optional. %% TODO: get rid of frames, or change doctype to Frameset index_file(Dir, Title) -> Frame2 = {frame, [{src,?MODULES_FRAME}, {name,"modulesFrame"},{title,""}], []}, Frame3 = {frame, [{src,?OVERVIEW_SUMMARY}, {name,"overviewFrame"},{title,""}], []}, Frameset = {frameset, [{cols,"20%,80%"}], [?NL, Frame2, ?NL, ?NL, Frame3, ?NL, {noframes, [?NL, {h2, ["This page uses frames"]}, ?NL, {p, ["Your browser does not accept frames.", ?NL, br, "You should go to the ", {a, [{href, ?OVERVIEW_SUMMARY}], ["non-frame version"]}, " instead.", ?NL]}, ?NL]}, ?NL]}, XML = xhtml_1(Title, [], Frameset), Text = xmerl:export_simple([XML], xmerl_html, []), edoc_lib:write_file(Text, Dir, ?INDEX_FILE). modules_frame(Dir, Ms, Title, CSS) -> Body = [?NL, {h2, [{class, "indextitle"}], ["Modules"]}, ?NL, {table, [{width, "100%"}, {border, 0}, {summary, "list of modules"}], lists:concat( [[?NL, {tr, [{td, [], [{a, [{href, module_ref(M)}, {target, "overviewFrame"}, {class, "module"}], [atom_to_list(M)]}]}]}] || M <- Ms])}, ?NL], XML = xhtml(Title, CSS, Body), Text = xmerl:export_simple([XML], xmerl_html, []), edoc_lib:write_file(Text, Dir, ?MODULES_FRAME). module_ref(M) -> atom_to_list(M) ++ ?DEFAULT_FILE_SUFFIX. xhtml(Title, CSS, Content) -> xhtml_1(Title, CSS, {body, [{bgcolor, "white"}], Content}). xhtml_1(Title, CSS, Body) -> {html, [?NL, {head, [?NL, {title, [Title]}, ?NL] ++ CSS}, ?NL, Body, ?NL] }. %% NEW-OPTIONS: overview %% INHERIT-OPTIONS: read_file/4 %% INHERIT-OPTIONS: edoc_lib:run_layout/2 %% INHERIT-OPTIONS: edoc_extract:file/4 %% DEFER-OPTIONS: run/2 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), 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), EncOpts = [{encoding,Encoding}], edoc_lib:write_file(Text, Dir, ?OVERVIEW_SUMMARY, EncOpts). copy_image(Dir) -> case code:priv_dir(?EDOC_APP) of PrivDir when is_list(PrivDir) -> From = filename:join(PrivDir, ?IMAGE), edoc_lib:copy_file(From, filename:join(Dir, ?IMAGE)); _ -> report("cannot find default image file.", []), exit(error) end. %% NEW-OPTIONS: stylesheet_file %% DEFER-OPTIONS: run/2 copy_stylesheet(Dir, Options) -> case proplists:get_value(stylesheet, Options) of undefined -> From = case proplists:get_value(stylesheet_file, Options) of File when is_list(File) -> File; _ -> case code:priv_dir(?EDOC_APP) of PrivDir when is_list(PrivDir) -> filename:join(PrivDir, ?STYLESHEET); _ -> report("cannot find default " "stylesheet file.", []), exit(error) end end, edoc_lib:copy_file(From, filename:join(Dir, ?STYLESHEET)); _ -> ok end. %% NEW-OPTIONS: stylesheet %% DEFER-OPTIONS: run/2 stylesheet(Options) -> case proplists:get_value(stylesheet, Options) of "" -> []; S -> Ref = case S of undefined -> ?STYLESHEET; "" -> ""; % no stylesheet S when is_list(S) -> S; _ -> report("bad value for option 'stylesheet'.", []), exit(error) end, [{link, [{rel, "stylesheet"}, {type, "text/css"}, {href, Ref}, {title, "EDoc"}], []}, ?NL] end. is_private(E) -> case get_attrval(private, E) of "yes" -> true; _ -> false end. is_hidden(E) -> case get_attrval(hidden, E) of "yes" -> true; _ -> 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}] -> V; [] -> "" end. get_attr(Name, [#xmlAttribute{name = Name} = A | As]) -> [A | get_attr(Name, As)]; get_attr(Name, [_ | As]) -> get_attr(Name, As); get_attr(_, []) -> []. %% Read external source file. Fails quietly, returning empty tag list. %% INHERIT-OPTIONS: edoc_extract:file/4 read_file(File, Context, Env, Opts) -> case edoc_extract:file(File, Context, Env, Opts) of {ok, Tags} -> Tags; {error, _} -> [] end. %% TODO: FIXME: meta-level index generation %% Creates a Table of Content from a list of Paths (ie paths to applications) %% and an overview file. -define(EDOC_DIR, "doc"). -define(INDEX_DIR, "doc/index"). -define(CURRENT_DIR, "."). toc(Paths, Ctxt) -> Opts = Ctxt#context.opts, Dir = Ctxt#context.dir, Env = Ctxt#context.env, app_index_file(Paths, Dir, Env, Opts). %% TODO: FIXME: it's unclear how much of this is working at all %% NEW-OPTIONS: title %% INHERIT-OPTIONS: overview/4 app_index_file(Paths, Dir, Env, Options) -> Title = proplists:get_value(title, Options,"Overview"), % Priv = proplists:get_bool(private, Options), CSS = stylesheet(Options), Apps1 = [{filename:dirname(A),filename:basename(A)} || A <- Paths], index_file(Dir, Title), application_frame(Dir, Apps1, Title, CSS), modules_frame(Dir, [], Title, CSS), overview(Dir, Title, Env, Options), % edoc_lib:write_info_file(Prod, [], Modules1, Dir), copy_stylesheet(Dir, Options). application_frame(Dir, Apps, Title, CSS) -> Body = [?NL, {h2, ["Applications"]}, ?NL, {table, [{width, "100%"}, {border, 0}], lists:concat( [[{tr, [{td, [], [{a, [{href,app_ref(Path,App)}, {target,"_top"}], [App]}]}]}] || {Path,App} <- Apps])}, ?NL], XML = xhtml(Title, CSS, Body), Text = xmerl:export_simple([XML], xmerl_html, []), edoc_lib:write_file(Text, Dir, ?MODULES_FRAME). app_ref(Path,M) -> filename:join([Path,M,?EDOC_DIR,?INDEX_FILE]).