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|
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009 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.
%% -------------------------------------------------------------------
-module(rebar_erlc_compiler).
-export([compile/2,
clean/2]).
%% make available for rebar_eunit until there is a better option
-export([do_compile/7, compile_opts/2]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
compile(Config, _AppFile) ->
do_compile(Config, "src/*.erl", "ebin", ".erl", ".beam",
fun compile_erl/2,
rebar_config:get_list(Config, erl_first_files, [])),
do_compile(Config, "mibs/*.mib", "priv/mibs", ".mib", ".bin",
fun compile_mib/2,
rebar_config:get_list(Config, mib_first_files, [])).
clean(_Config, _AppFile) ->
%% TODO: This would be more portable if it used Erlang to traverse
%% the dir structure and delete each file; however it would also
%% much slower.
[] = os:cmd("rm -f ebin/*.beam priv/mibs/*.bin"),
ok.
%% ===================================================================
%% Internal functions
%% ===================================================================
do_compile(Config, SrcWildcard, OutDir, InExt, OutExt, CompileFn, FirstFiles) ->
case filelib:wildcard(SrcWildcard) of
[] ->
ok;
FoundFiles when is_list(FoundFiles) ->
%% Ensure that the FirstFiles are compiled first; drop them from the
%% FoundFiles and compile them in sequence
FirstTargets = [{Fs, target_file(Fs, OutDir, InExt, OutExt)} || Fs <- FirstFiles],
RestTargets = [{Fs, target_file(Fs, OutDir, InExt, OutExt)} ||
Fs <- drop_each(FirstFiles, FoundFiles)],
%% Make sure target directory exists
ok = filelib:ensure_dir(target_file(hd(FoundFiles), OutDir, InExt, OutExt)),
%% Compile first targets in sequence
compile_each(FirstTargets, Config, CompileFn),
%% Spin up workers
Self = self(),
Pids = [spawn_monitor(fun() -> compile_worker(Self) end) || _I <- lists:seq(1,3)],
%% Process rest of targets
compile_queue(Pids, RestTargets, Config, CompileFn)
end.
drop_each([], List) ->
List;
drop_each([Member | Rest], List) ->
drop_each(Rest, lists:delete(Member, List)).
compile_each([], _Config, _CompileFn) ->
ok;
compile_each([{Src, Target} | Rest], Config, CompileFn) ->
case needs_compile(Src, Target) of
true ->
?CONSOLE("Compiling ~s\n", [Src]),
CompileFn(Src, Config);
false ->
?INFO("Skipping ~s\n", [Src]),
ok
end,
compile_each(Rest, Config, CompileFn).
needs_compile(Src, Target) ->
filelib:last_modified(Target) < filelib:last_modified(Src).
target_file(F, TargetDir, InExt, OutExt) ->
filename:join([TargetDir, filename:basename(F, InExt) ++ OutExt]).
compile_opts(Config, Key) ->
rebar_config:get_list(Config, Key, []).
compile_erl(Source, Config) ->
Opts = [{i, "include"}, {outdir, "ebin"}, report] ++ compile_opts(Config, erl_opts),
case compile:file(Source, Opts) of
{ok, _} ->
ok;
error ->
?FAIL
end.
compile_mib(Source, Config) ->
Opts = [{outdir, "priv/mibs"}, {i, ["priv/mibs"]}] ++ compile_opts(Config, mib_opts),
case snmpc:compile(Source, Opts) of
{ok, _} ->
ok;
{error, compilation_failed} ->
?FAIL
end.
compile_queue([], [], _Config, _CompileFn) ->
ok;
compile_queue(Pids, Targets, Config, CompileFn) ->
receive
{next, Worker} ->
case Targets of
[] ->
Worker ! empty,
compile_queue(Pids, Targets, Config, CompileFn);
[{Src, Target} | Rest] ->
Worker ! {compile, Src, Target, Config, CompileFn},
compile_queue(Pids, Rest, Config, CompileFn)
end;
{compiled, Source} ->
?CONSOLE("Compiled ~s\n", [Source]),
compile_queue(Pids, Targets, Config, CompileFn);
{'DOWN', Mref, _, Pid, normal} ->
?DEBUG("Worker exited cleanly\n", []),
Pids2 = lists:delete({Pid, Mref}, Pids),
compile_queue(Pids2, Targets, Config, CompileFn);
{'DOWN', _Mref, _, _Pid, Info} ->
?DEBUG("Worker failed: ~p\n", [Info]),
?FAIL
end.
compile_worker(QueuePid) ->
QueuePid ! {next, self()},
receive
{compile, Src, Target, Config, CompileFn} ->
case needs_compile(Src, Target) of
true ->
CompileFn(Src, Config),
QueuePid ! {compiled, Src};
false ->
?INFO("Skipping ~s\n", [Src]),
ok
end,
compile_worker(QueuePid);
empty ->
ok
end.
|
