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|
%% -*- tab-width: 4;erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009, 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.
%% -------------------------------------------------------------------
-module(rebar_erlc_compiler).
-export([compile/2,
clean/2]).
-export([doterl_compile/2,
doterl_compile/3]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
-spec compile(Config::#config{}, AppFile::string()) -> 'ok'.
compile(Config, _AppFile) ->
doterl_compile(Config, "ebin"),
rebar_base_compiler:run(Config, rebar_config:get_list(Config, mib_first_files, []),
"mibs", ".mib", "priv/mibs", ".bin",
fun compile_mib/3).
-spec clean(Config::#config{}, AppFile::string()) -> 'ok'.
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.
ok = rebar_file_utils:rm_rf("ebin/*.beam priv/mibs/*.bin"),
%% Erlang compilation is recursive, so it's possible that we have a nested
%% directory structure in ebin with .beam files within. As such, we want
%% to scan whatever is left in the ebin/ directory for sub-dirs which
%% satisfy our criteria.
BeamFiles = rebar_utils:find_files("ebin", "^.*\\.beam$"),
rebar_file_utils:delete_each(BeamFiles),
lists:foreach(fun(Dir) -> delete_dir(Dir, dirs(Dir)) end, dirs("ebin")),
ok.
%% ===================================================================
%% .erl Compilation API (externally used by only eunit)
%% ===================================================================
-spec doterl_compile(Config::#config{}, OutDir::string()) -> 'ok'.
doterl_compile(Config, OutDir) ->
doterl_compile(Config, OutDir, []).
doterl_compile(Config, OutDir, MoreSources) ->
FirstErls = rebar_config:get_list(Config, erl_first_files, []),
ErlOpts = rebar_config:get(Config, erl_opts, []),
%% Support the src_dirs option allowing multiple directories to
%% contain erlang source. This might be used, for example, should eunit tests be
%% separated from the core application source.
SrcDirs = src_dirs(proplists:append_values(src_dirs, ErlOpts)),
RestErls = [Source || Source <- gather_src(SrcDirs, []) ++ MoreSources,
lists:member(Source, FirstErls) == false],
rebar_base_compiler:run(Config, FirstErls, RestErls,
fun(S, C) -> internal_erl_compile(S, C, OutDir) end).
%% ===================================================================
%% Internal functions
%% ===================================================================
-spec include_path(Source::string(), Config::#config{}) -> [string()].
include_path(Source, Config) ->
ErlOpts = rebar_config:get(Config, erl_opts, []),
[filename:dirname(Source)] ++ proplists:get_all_values(i, ErlOpts).
-spec inspect(Source::string(), IncludePath::[string()]) -> {string(), [string()]}.
inspect(Source, IncludePath) ->
ModuleDefault = filename:basename(Source, ".erl"),
case epp:open(Source, IncludePath) of
{ok, Epp} ->
inspect_epp(Epp, ModuleDefault, []);
{error, Reason} ->
?DEBUG("Failed to inspect ~s: ~p\n", [Source, Reason]),
{ModuleDefault, []}
end.
-spec inspect_epp(Epp::pid(), Module::string(), Includes::[string()]) -> {string(), [string()]}.
inspect_epp(Epp, Module, Includes) ->
case epp:parse_erl_form(Epp) of
{ok, {attribute, _, module, ModInfo}} ->
case ModInfo of
%% Typical module name, single atom
ActualModule when is_atom(ActualModule) ->
ActualModuleStr = atom_to_list(ActualModule);
%% Packag-ized module name, list of atoms
ActualModule when is_list(ActualModule) ->
ActualModuleStr = string:join([atom_to_list(P) || P <- ActualModule], ".");
%% Parameterized module name, single atom
{ActualModule, _} when is_atom(ActualModule) ->
ActualModuleStr = atom_to_list(ActualModule);
%% Parameterized and packagized module name, list of atoms
{ActualModule, _} when is_list(ActualModule) ->
ActualModuleStr = string:join([atom_to_list(P) || P <- ActualModule], ".")
end,
inspect_epp(Epp, ActualModuleStr, Includes);
{ok, {attribute, 1, file, {Module, 1}}} ->
inspect_epp(Epp, Module, Includes);
{ok, {attribute, 1, file, {IncFile, 1}}} ->
inspect_epp(Epp, Module, [IncFile | Includes]);
{eof, _} ->
epp:close(Epp),
{Module, Includes};
_ ->
inspect_epp(Epp, Module, Includes)
end.
-spec needs_compile(Source::string(), Target::string(), Hrls::[string()]) -> boolean().
needs_compile(Source, Target, Hrls) ->
TargetLastMod = filelib:last_modified(Target),
lists:any(fun(I) -> TargetLastMod < filelib:last_modified(I) end,
[Source] ++ Hrls).
-spec internal_erl_compile(Source::string(), Config::#config{}, Outdir::string()) -> 'ok' | 'skipped'.
internal_erl_compile(Source, Config, Outdir) ->
%% Determine the target name and includes list by inspecting the source file
{Module, Hrls} = inspect(Source, include_path(Source, Config)),
%% Construct the target filename
Target = filename:join([Outdir | string:tokens(Module, ".")]) ++ ".beam",
ok = filelib:ensure_dir(Target),
%% If the file needs compilation, based on last mod date of includes or
%% the target,
case needs_compile(Source, Target, Hrls) of
true ->
Opts = [{i, "include"}, {outdir, filename:dirname(Target)}, report, return] ++
rebar_config:get(Config, erl_opts, []),
case compile:file(Source, Opts) of
{ok, _, []} ->
ok;
{ok, _, _Warnings} ->
%% We got at least one warning -- if fail_on_warning is in options, fail
case lists:member(fail_on_warning, Opts) of
true ->
?FAIL;
false ->
ok
end;
_ ->
?FAIL
end;
false ->
skipped
end.
-spec compile_mib(Source::string(), Target::string(), Config::#config{}) -> 'ok'.
compile_mib(Source, Target, Config) ->
ok = rebar_utils:ensure_dir(Target),
Opts = [{outdir, "priv/mibs"}, {i, ["priv/mibs"]}] ++
rebar_config:get(Config, mib_opts, []),
case snmpc:compile(Source, Opts) of
{ok, _} ->
ok;
{error, compilation_failed} ->
?FAIL
end.
gather_src([], Srcs) ->
Srcs;
gather_src([Dir|Rest], Srcs) ->
gather_src(Rest, Srcs ++ rebar_utils:find_files(Dir, ".*\\.erl\$")).
-spec src_dirs(SrcDirs::[string()]) -> [string()].
src_dirs([]) ->
["src"];
src_dirs(SrcDirs) ->
SrcDirs ++ src_dirs([]).
-spec dirs(Dir::string()) -> [string()].
dirs(Dir) ->
[F || F <- filelib:wildcard(filename:join([Dir, "*"])), filelib:is_dir(F)].
-spec delete_dir(Dir::string(), Subdirs::[string()]) -> 'ok' | {'error', atom()}.
delete_dir(Dir, []) ->
file:del_dir(Dir);
delete_dir(Dir, Subdirs) ->
lists:foreach(fun(D) -> delete_dir(D, dirs(D)) end, Subdirs),
file:del_dir(Dir).
|
