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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2010 Dave Smith (dizzyd@dizzyd.com)
%%
%% Permission is hereby granted, free of charge, to any person obtaining a copy
%% of this software and associated documentation files (the "Software"), to deal
%% in the Software without restriction, including without limitation the rights
%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%% copies of the Software, and to permit persons to whom the Software is
%% furnished to do so, subject to the following conditions:
%%
%% The above copyright notice and this permission notice shall be included in
%% all copies or substantial portions of the Software.
%%
%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
%% THE SOFTWARE.
%% -------------------------------------------------------------------
%% @author Dave Smith <dizzyd@dizzyd.com>
%% @doc rebar_edoc supports the following command:
%% <ul>
%% <li>doc (essentially erl -noshell -run edoc_run application
%% "'$(<app_name>)'"
%% '"."' '[<options>]')</li>
%% </ul>
%% EDoc options can be given in the <code>edoc_opts</code> option in
%% <code>rebar.config</code>.
%% @copyright 2010 Dave Smith
%% -------------------------------------------------------------------
-module(rebar_edoc).
-export([doc/2]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
%% @doc Generate Erlang program documentation.
-spec doc(Config::rebar_config:config(), File::file:filename()) -> ok.
doc(Config, File) ->
%% Save code path
CodePath = setup_code_path(),
%% Get the edoc_opts and app file info
EDocOpts = rebar_config:get(Config, edoc_opts, []),
{ok, AppName, _AppData} = rebar_app_utils:load_app_file(File),
%% Determine the age of the summary file
EDocInfoName = filename:join(proplists:get_value(dir, EDocOpts, "doc"),
"edoc-info"),
EDocInfoLastMod = filelib:last_modified(EDocInfoName),
%% For each source directory, look for a more recent file than
%% SumaryLastMod; in that case, we go ahead and do a full regen
NeedsRegen = newer_file_exists(proplists:get_value(source_path, EDocOpts, ["src"]),
EDocInfoLastMod),
case NeedsRegen of
true ->
?INFO("Regenerating edocs for ~p\n", [AppName]),
ok = edoc:application(AppName, ".", EDocOpts);
false ->
?INFO("Skipping regeneration of edocs for ~p\n", [AppName]),
ok
end,
%% Restore code path
true = code:set_path(CodePath),
ok.
%% ===================================================================
%% Internal functions
%% ===================================================================
setup_code_path() ->
%% Setup code path prior to calling edoc so that edown, asciiedoc,
%% and the like can work properly when generating their own
%% documentation.
CodePath = code:get_path(),
true = code:add_patha(ebin_dir()),
CodePath.
ebin_dir() ->
filename:join(rebar_utils:get_cwd(), "ebin").
newer_file_exists(Paths, LastMod) ->
CheckFile = fun(Filename, _) ->
FLast = filelib:last_modified(Filename),
case FLast > LastMod of
true ->
?DEBUG("~p is more recent than edoc-info: ~120p > ~120p\n",
[Filename, FLast, LastMod]),
throw(newer_file_exists);
false ->
false
end
end,
try
lists:foldl(fun(P, _) -> filelib:fold_files(P, ".*.erl", true, CheckFile, false) end,
undefined, Paths),
false
catch
throw:newer_file_exists ->
true
end.
|
