%% ===================================================================== %% 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 %% %% $Id$ %% %% @author Richard Carlsson %% @copyright 2001-2006 Richard Carlsson %% @see edoc %% @end %% ===================================================================== %% @doc The standard HTML layout module for EDoc. See the {@link edoc} %% module for details on usage. %% Note that this is written so that it is *not* depending on edoc.hrl! -module(edoc_layout). -export([module/2, package/2, overview/2, type/1]). -import(edoc_report, [report/2]). -include("xmerl.hrl"). -define(HTML_EXPORT, xmerl_html). -define(DEFAULT_XML_EXPORT, ?HTML_EXPORT). -define(OVERVIEW_SUMMARY, "overview-summary.html"). -define(STYLESHEET, "stylesheet.css"). -define(NL, "\n"). -define(DESCRIPTION_TITLE, "Description"). -define(DESCRIPTION_LABEL, "description"). -define(DATA_TYPES_TITLE, "Data Types"). -define(DATA_TYPES_LABEL, "types"). -define(FUNCTION_INDEX_TITLE, "Function Index"). -define(FUNCTION_INDEX_LABEL, "index"). -define(FUNCTIONS_TITLE, "Function Details"). -define(FUNCTIONS_LABEL, "functions"). %% @doc The layout function. %% %% Options to the standard layout: %%
%%
{@type {index_columns, integer()@}} %%
%%
Specifies the number of column pairs used for the function %% index tables. The default value is 1. %%
%%
{@type {stylesheet, string()@}} %%
%%
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. %%
%%
{@type {sort_functions, bool()@}} %%
%%
If `true', the detailed function descriptions are listed by %% name, otherwise they are listed in the order of occurrence in %% the source file. The default value is `true'. %%
%%
{@type {xml_export, Module::atom()@}} %%
%%
Specifies an {@link //xmerl. `xmerl'} callback module to be %% used for exporting the documentation. See {@link %% //xmerl/xmerl:export_simple/3} for details. %%
%%
%% %% @see edoc:layout/2 %% NEW-OPTIONS: xml_export, index_columns, stylesheet module(Element, Options) -> XML = layout_module(Element, init_opts(Element, Options)), Export = proplists:get_value(xml_export, Options, ?DEFAULT_XML_EXPORT), xmerl:export_simple(XML, Export, []). % Put layout options in a data structure for easier access. %% %Commented out until it can be made private %% %@type opts() = #opts{root = string(), %% % stylesheet = string(), %% % index_columns = integer()} -record(opts, {root, stylesheet, index_columns, sort_functions}). init_opts(Element, Options) -> R = #opts{root = get_attrval(root, Element), index_columns = proplists:get_value(index_columns, Options, 1), sort_functions = proplists:get_value(sort_functions, Options, true) }, case proplists:get_value(stylesheet, Options) of undefined -> S = edoc_lib:join_uri(R#opts.root, ?STYLESHEET), R#opts{stylesheet = S}; "" -> R; % don't use any stylesheet S when is_list(S) -> R#opts{stylesheet = S}; _ -> report("bad value for option `stylesheet'.", []), exit(error) end. %% ===================================================================== %% XML-BASED LAYOUT ENGINE %% ===================================================================== %% We assume that we have expanded XML data. %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% %% TODO: improve layout of parameterized modules layout_module(#xmlElement{name = module, content = Es}=E, Opts) -> Args = module_params(get_content(args, Es)), Name = get_attrval(name, E), Title = case get_elem(args, Es) of [] -> ["Module ", Name]; _ -> ["Abstract module ", Name, " [", {Args}, "]"] end, Desc = get_content(description, Es), ShortDesc = get_content(briefDescription, Desc), FullDesc = get_content(fullDescription, Desc), Functions = [{function_name(E), E} || E <- get_content(functions, Es)], Types = [{type_name(E), E} || E <- get_content(typedecls, Es)], SortedFs = lists:sort(Functions), Body = (navigation("top") ++ [?NL, hr, ?NL, ?NL, {h1, Title}, ?NL] ++ doc_index(FullDesc, Functions, Types) ++ ShortDesc ++ [?NL] ++ copyright(Es) ++ deprecated(Es, "module") ++ [?NL] ++ version(Es) ++ since(Es) ++ behaviours(Es, Name) ++ authors(Es) ++ references(Es) ++ sees(Es) ++ todos(Es) ++ if FullDesc == [] -> []; true -> [?NL, {h2, [{a, [{name, "description"}], ["Description"]}]} | FullDesc] end ++ types(lists:sort(Types)) ++ function_index(SortedFs, Opts#opts.index_columns) ++ if Opts#opts.sort_functions -> functions(SortedFs); true -> functions(Functions) end ++ [hr, ?NL] ++ navigation("bottom") ++ timestamp()), xhtml(Title, stylesheet(Opts), Body). module_params(Es) -> As = [{get_text(argName, Es1), get_content(fullDescription, get_content(description, Es1))} || #xmlElement{content = Es1} <- Es], case As of [] -> []; [First | Rest] -> [element(1, First) | [ {[", ",A]} || {A, _D} <- Rest]] end. timestamp() -> [?NL, {p, [{i, [io_lib:fwrite("Generated by EDoc, ~s, ~s.", [edoc_lib:datestr(date()), edoc_lib:timestr(time())]) ]}]}, ?NL]. stylesheet(Opts) -> case Opts#opts.stylesheet of undefined -> []; CSS -> [{link, [{rel, "stylesheet"}, {type, "text/css"}, {href, CSS}, {title, "EDoc"}], []}, ?NL] end. navigation(Where) -> [?NL, {'div', [{class, "navbar"}], [{a, [{name, "#navbar_" ++ Where}], []}, {table, [{width, "100%"}, {border,0}, {cellspacing, 0}, {cellpadding, 2}, {summary, "navigation bar"}], [{tr, [{td, [{a, [{href, ?OVERVIEW_SUMMARY}, {target,"overviewFrame"}], ["Overview"]}]}, {td, [{a, [{href, "http://www.erlang.org/"}], [{img, [{src, "erlang.png"}, {align, "right"}, {border, 0}, {alt, "erlang logo"}], []}]} ]} ]} ]} ]} ]. doc_index(FullDesc, Functions, Types) -> case doc_index_rows(FullDesc, Functions, Types) of [] -> []; Rs -> [{ul, [{class, "index"}], [{li, [{a, [{href, local_label(R)}], [T]}]} || {T, R} <- Rs]}] end. doc_index_rows(FullDesc, Functions, Types) -> (if FullDesc == [] -> []; true -> [{?DESCRIPTION_TITLE, ?DESCRIPTION_LABEL}] end ++ if Types == [] -> []; true -> [{?DATA_TYPES_TITLE, ?DATA_TYPES_LABEL}] end ++ if Functions == [] -> []; true -> [{?FUNCTION_INDEX_TITLE, ?FUNCTION_INDEX_LABEL}, {?FUNCTIONS_TITLE, ?FUNCTIONS_LABEL}] end). function_index(Fs, Cols) -> case function_index_rows(Fs, Cols, []) of [] -> []; Rows -> [?NL, {h2, [{a, [{name, ?FUNCTION_INDEX_LABEL}], [?FUNCTION_INDEX_TITLE]}]}, ?NL, {table, [{width, "100%"}, {border, 1}, {cellspacing,0}, {cellpadding,2}, {summary, "function index"}], Rows}, ?NL] end. function_index_rows(Fs, Cols, Title) -> Rows = (length(Fs) + (Cols - 1)) div Cols, (if Title == [] -> []; true -> [{tr, [{th, [{colspan, Cols * 2}, {align, left}], [Title]}]}, ?NL] end ++ lists:flatmap(fun index_row/1, edoc_lib:transpose(edoc_lib:segment(Fs, Rows)))). index_row(Fs) -> [{tr, lists:flatmap(fun index_col/1, Fs)}, ?NL]. index_col({Name, F=#xmlElement{content = Es}}) -> [{td, [{valign, "top"}], label_href(function_header(Name, F, "*"), F)}, {td, index_desc(Es)}]. index_desc(Es) -> Desc = get_content(description, Es), (case get_content(deprecated, Es) of [] -> []; _ -> ["(", {em, ["Deprecated"]}, ".) "] end ++ case get_content(briefDescription, Desc) of [] -> equiv(Es); % no description at all if no equiv ShortDesc -> ShortDesc end). label_href(Content, F) -> case get_attrval(label, F) of "" -> Content; Ref -> [{a, [{href, local_label(Ref)}], Content}] end. %% %% %% %% %% functions(Fs) -> Es = lists:flatmap(fun ({Name, E}) -> function(Name, E) end, Fs), if Es == [] -> []; true -> [?NL, {h2, [{a, [{name, ?FUNCTIONS_LABEL}], [?FUNCTIONS_TITLE]}]}, ?NL | Es] end. function(Name, E=#xmlElement{content = Es}) -> ([?NL, {h3, [{class, "function"}], label_anchor(function_header(Name, E, " *"), E)}, ?NL] ++ [{'div', [{class, "spec"}], [?NL, {p, case typespec(get_content(typespec, Es)) of [] -> signature(get_content(args, Es), get_attrval(name, E)); Spec -> Spec end}, ?NL] ++ case params(get_content(args, Es)) of [] -> []; Ps -> [{p, Ps}, ?NL] end ++ case returns(get_content(returns, Es)) of [] -> []; Rs -> [{p, Rs}, ?NL] end}] ++ throws(Es) ++ equiv_p(Es) ++ deprecated(Es, "function") ++ fulldesc(Es) ++ since(Es) ++ sees(Es) ++ todos(Es)). function_name(E) -> atom(get_attrval(name, E)) ++ "/" ++ get_attrval(arity, E). function_header(Name, E, Private) -> case is_exported(E) of true -> [Name]; false -> [Name, Private] end. is_exported(E) -> case get_attrval(exported, E) of "yes" -> true; _ -> false end. label_anchor(Content, E) -> case get_attrval(label, E) of "" -> Content; Ref -> [{a, [{name, Ref}], Content}] end. %% %% %% %% This is currently only done for functions without type spec. signature(Es, Name) -> [{tt, [Name, "("] ++ seq(fun arg/1, Es) ++ [") -> any()"]}]. arg(#xmlElement{content = Es}) -> [get_text(argName, Es)]. %% parameter and return value descriptions (if any) params(Es) -> As = [{get_text(argName, Es1), get_content(fullDescription, get_content(description, Es1))} || #xmlElement{content = Es1} <- Es], As1 = [A || A <- As, element(2, A) /= []], if As1 == [] -> []; true -> [ { [{tt, [A]}, ": "] ++ D ++ [br, ?NL] } || {A, D} <- As1] end. returns(Es) -> case get_content(fullDescription, get_content(description, Es)) of [] -> []; D -> ["returns: "] ++ D end. %% throws(Es) -> case get_content(throws, Es) of [] -> []; Es1 -> [{p, (["throws ", {tt, t_utype(get_elem(type, Es1))}] ++ local_defs(get_elem(localdef, Es1)))}, ?NL] end. %% typespec([]) -> []; typespec(Es) -> [{tt, ([t_name(get_elem(erlangName, Es))] ++ t_utype(get_elem(type, Es)))}] ++ local_defs(get_elem(localdef, Es)). %% %% types([]) -> []; types(Ts) -> Es = lists:flatmap(fun ({Name, E}) -> typedecl(Name, E) end, Ts), [?NL, {h2, [{a, [{name, ?DATA_TYPES_LABEL}], [?DATA_TYPES_TITLE]}]}, ?NL | Es]. typedecl(Name, E=#xmlElement{content = Es}) -> ([?NL, {h3, [{class, "typedecl"}], label_anchor([Name, "()"], E)}, ?NL] ++ [{p, typedef(get_content(typedef, Es))}, ?NL] ++ fulldesc(Es)). type_name(#xmlElement{content = Es}) -> t_name(get_elem(erlangName, get_content(typedef, Es))). typedef(Es) -> Name = ([t_name(get_elem(erlangName, Es)), "("] ++ seq(fun t_utype_elem/1, get_content(argtypes, Es), [")"])), (case get_elem(type, Es) of [] -> [{b, ["abstract datatype"]}, ": ", {tt, Name}]; Type -> [{tt, Name ++ [" = "] ++ t_utype(Type)}] end ++ local_defs(get_elem(localdef, Es))). local_defs([]) -> []; local_defs(Es) -> [?NL, {ul, [{class, "definitions"}], lists:append([[{li, [{tt, localdef(E)}]}, ?NL] || E <- Es])}]. localdef(E = #xmlElement{content = Es}) -> (case get_elem(typevar, Es) of [] -> label_anchor(t_abstype(get_content(abstype, Es)), E); [V] -> t_var(V) end ++ [" = "] ++ t_utype(get_elem(type, Es))). fulldesc(Es) -> case get_content(fullDescription, get_content(description, Es)) of [] -> [?NL]; Desc -> [{p, Desc}, ?NL] end. sees(Es) -> case get_elem(see, Es) of [] -> []; Es1 -> [{p, [{b, ["See also:"]}, " "] ++ seq(fun see/1, Es1, ["."])}, ?NL] end. see(E=#xmlElement{content = Es}) -> see(E, Es). see(E, Es) -> case href(E) of [] -> Es; Ref -> [{a, Ref, Es}] end. href(E) -> case get_attrval(href, E) of "" -> []; URI -> T = case get_attrval(target, E) of "" -> []; S -> [{target, S}] end, [{href, URI} | T] end. equiv_p(Es) -> equiv(Es, true). equiv(Es) -> equiv(Es, false). equiv(Es, P) -> case get_content(equiv, Es) of [] -> []; Es1 -> case get_content(expr, Es1) of [] -> []; [Expr] -> Expr1 = [{tt, [Expr]}], Expr2 = case get_elem(see, Es1) of [] -> Expr1; [E=#xmlElement{}] -> see(E, Expr1) end, Txt = ["Equivalent to "] ++ Expr2 ++ ["."], (case P of true -> [{p, Txt}]; false -> Txt end ++ [?NL]) end end. copyright(Es) -> case get_content(copyright, Es) of [] -> []; Es1 -> [{p, ["Copyright \251 " | Es1]}, ?NL] end. version(Es) -> case get_content(version, Es) of [] -> []; Es1 -> [{p, [{b, ["Version:"]}, " " | Es1]}, ?NL] end. since(Es) -> case get_content(since, Es) of [] -> []; Es1 -> [{p, [{b, ["Introduced in:"]}, " " | Es1]}, ?NL] end. deprecated(Es, S) -> Es1 = get_content(description, get_content(deprecated, Es)), case get_content(fullDescription, Es1) of [] -> []; Es2 -> [{p, [{b, ["This " ++ S ++ " is deprecated:"]}, " " | Es2]}, ?NL] end. behaviours(Es, Name) -> (case get_elem(behaviour, Es) of [] -> []; Es1 -> [{p, ([{b, ["Behaviours:"]}, " "] ++ seq(fun behaviour/1, Es1, ["."]))}, ?NL] end ++ case get_content(callbacks, Es) of [] -> []; Es1 -> [{p, ([{b, ["This module defines the ", {tt, [Name]}, " behaviour."]}, br, " Required callback functions: "] ++ seq(fun callback/1, Es1, ["."]))}, ?NL] end). behaviour(E=#xmlElement{content = Es}) -> see(E, [{tt, Es}]). callback(E=#xmlElement{}) -> Name = get_attrval(name, E), Arity = get_attrval(arity, E), [{tt, [Name, "/", Arity]}]. authors(Es) -> case get_elem(author, Es) of [] -> []; Es1 -> [{p, [{b, ["Authors:"]}, " "] ++ seq(fun author/1, Es1, ["."])}, ?NL] end. atom(String) -> io_lib:write_atom(list_to_atom(String)). %% author(E=#xmlElement{}) -> Name = get_attrval(name, E), Mail = get_attrval(email, E), URI = get_attrval(website, E), (if Name == Mail -> [{a, [{href, "mailto:" ++ Mail}],[{tt, [Mail]}]}]; true -> if Mail == "" -> [Name]; true -> [Name, " (", {a, [{href, "mailto:" ++ Mail}], [{tt, [Mail]}]}, ")"] end end ++ if URI == "" -> []; true -> [" [", {em, ["web site:"]}, " ", {tt, [{a, [{href, URI}, {target, "_top"}], [URI]}]}, "]"] end). references(Es) -> case get_elem(reference, Es) of [] -> []; Es1 -> [{p, [{b, ["References"]}, {ul, [{li, C} || #xmlElement{content = C} <- Es1]}]}, ?NL] end. todos(Es) -> case get_elem(todo, Es) of [] -> []; Es1 -> Todos = [{li, [{font, [{color,red}], C}]} || #xmlElement{content = C} <- Es1], [{p, [{b, [{font, [{color,red}], ["To do"]}]}, {ul, Todos}]}, ?NL] end. t_name([E]) -> N = get_attrval(name, E), case get_attrval(module, E) of "" -> atom(N); M -> S = atom(M) ++ ":" ++ atom(N), case get_attrval(app, E) of "" -> S; A -> "//" ++ atom(A) ++ "/" ++ S end end. t_utype([E]) -> t_utype_elem(E). t_utype_elem(E=#xmlElement{content = Es}) -> case get_attrval(name, E) of "" -> t_type(Es); Name -> T = t_type(Es), case T of [Name] -> T; % avoid generating "Foo::Foo" T -> [Name] ++ ["::"] ++ T end end. t_type([E=#xmlElement{name = typevar}]) -> t_var(E); t_type([E=#xmlElement{name = atom}]) -> t_atom(E); t_type([E=#xmlElement{name = integer}]) -> t_integer(E); t_type([E=#xmlElement{name = float}]) -> t_float(E); t_type([#xmlElement{name = nil}]) -> t_nil(); t_type([#xmlElement{name = list, content = Es}]) -> t_list(Es); t_type([#xmlElement{name = tuple, content = Es}]) -> t_tuple(Es); t_type([#xmlElement{name = 'fun', content = Es}]) -> t_fun(Es); t_type([#xmlElement{name = record, content = Es}]) -> t_record(Es); t_type([E = #xmlElement{name = abstype, content = Es}]) -> T = t_abstype(Es), see(E, T); t_type([#xmlElement{name = union, content = Es}]) -> t_union(Es). t_var(E) -> [get_attrval(name, E)]. t_atom(E) -> [get_attrval(value, E)]. t_integer(E) -> [get_attrval(value, E)]. t_float(E) -> [get_attrval(value, E)]. t_nil() -> ["[]"]. t_list(Es) -> ["["] ++ t_utype(get_elem(type, Es)) ++ ["]"]. t_tuple(Es) -> ["{"] ++ seq(fun t_utype_elem/1, Es, ["}"]). t_fun(Es) -> ["("] ++ seq(fun t_utype_elem/1, get_content(argtypes, Es), [") -> "] ++ t_utype(get_elem(type, Es))). t_record(Es) -> ["#"] ++ t_type(get_elem(atom, Es)) ++ ["{"] ++ seq(fun t_field/1, get_elem(field, Es), ["}"]). t_field(#xmlElement{content = Es}) -> t_type(get_elem(atom, Es)) ++ [" = "] ++ t_utype(get_elem(type, Es)). t_abstype(Es) -> ([t_name(get_elem(erlangName, Es)), "("] ++ seq(fun t_utype_elem/1, get_elem(type, Es), [")"])). t_union(Es) -> seq(fun t_utype_elem/1, Es, " | ", []). seq(F, Es) -> seq(F, Es, []). seq(F, Es, Tail) -> seq(F, Es, ", ", Tail). seq(F, [E], _Sep, Tail) -> F(E) ++ Tail; seq(F, [E | Es], Sep, Tail) -> F(E) ++ [Sep] ++ seq(F, Es, Sep, Tail); seq(_F, [], _Sep, Tail) -> Tail. get_elem(Name, [#xmlElement{name = Name} = E | Es]) -> [E | get_elem(Name, Es)]; get_elem(Name, [_ | Es]) -> get_elem(Name, Es); get_elem(_, []) -> []. get_attr(Name, [#xmlAttribute{name = Name} = A | As]) -> [A | get_attr(Name, As)]; get_attr(Name, [_ | As]) -> get_attr(Name, As); get_attr(_, []) -> []. get_attrval(Name, #xmlElement{attributes = As}) -> case get_attr(Name, As) of [#xmlAttribute{value = V}] -> V; [] -> "" end. get_content(Name, Es) -> case get_elem(Name, Es) of [#xmlElement{content = Es1}] -> Es1; [] -> [] end. get_text(Name, Es) -> case get_content(Name, Es) of [#xmlText{value = Text}] -> Text; [] -> "" end. local_label(R) -> "#" ++ R. xhtml(Title, CSS, Body) -> [{html, [?NL, {head, [?NL, {title, Title}, ?NL] ++ CSS}, ?NL, {body, [{bgcolor, "white"}], Body}, ?NL] }, ?NL]. %% --------------------------------------------------------------------- type(E) -> type(E, []). type(E, Ds) -> xmerl:export_simple_content(t_utype_elem(E) ++ local_defs(Ds), ?HTML_EXPORT). package(E=#xmlElement{name = package, content = Es}, Options) -> Opts = init_opts(E, Options), Name = get_text(packageName, Es), Title = ["Package ", Name], Desc = get_content(description, Es), % ShortDesc = get_content(briefDescription, Desc), FullDesc = get_content(fullDescription, Desc), Body = ([?NL, {h1, [Title]}, ?NL] % ++ ShortDesc ++ copyright(Es) ++ deprecated(Es, "package") ++ version(Es) ++ since(Es) ++ authors(Es) ++ references(Es) ++ sees(Es) ++ todos(Es) ++ FullDesc), XML = xhtml(Title, stylesheet(Opts), Body), xmerl:export_simple(XML, ?HTML_EXPORT, []). overview(E=#xmlElement{name = overview, content = Es}, Options) -> Opts = init_opts(E, Options), Title = [get_text(title, Es)], Desc = get_content(description, Es), % ShortDesc = get_content(briefDescription, Desc), FullDesc = get_content(fullDescription, Desc), Body = (navigation("top") ++ [?NL, {h1, [Title]}, ?NL] % ++ ShortDesc ++ copyright(Es) ++ version(Es) ++ since(Es) ++ authors(Es) ++ references(Es) ++ sees(Es) ++ todos(Es) ++ FullDesc ++ [?NL, hr] ++ navigation("bottom") ++ timestamp()), XML = xhtml(Title, stylesheet(Opts), Body), xmerl:export_simple(XML, ?HTML_EXPORT, []).