%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*- %% ex: ts=4 sw=4 et %% ------------------------------------------------------------------- %% %% 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_escripter). -export([escriptize/2, clean/2]). %% for internal use only -export([info/2]). -include("rebar.hrl"). -include_lib("kernel/include/file.hrl"). %% =================================================================== %% Public API %% =================================================================== escriptize(Config0, AppFile) -> %% Extract the application name from the archive -- this is the default %% name of the generated script {Config, AppName} = rebar_app_utils:app_name(Config0, AppFile), AppNameStr = atom_to_list(AppName), %% Get the output filename for the escript -- this may include dirs Filename = rebar_config:get_local(Config, escript_name, AppName), ok = filelib:ensure_dir(Filename), %% Look for a list of other applications (dependencies) to include %% in the output file. We then use the .app files for each of these %% to pull in all the .beam files. InclBeams = get_app_beams( rebar_config:get_local(Config, escript_incl_apps, []), []), %% Look for a list of extra files to include in the output file. %% For internal rebar-private use only. Do not use outside rebar. InclExtra = get_extra(Config), %% Construct the archive of everything in ebin/ dir -- put it on the %% top-level of the zip file so that code loading works properly. EbinPrefix = filename:join(AppNameStr, "ebin"), EbinFiles = usort(load_files(EbinPrefix, "*", "ebin")), ExtraFiles = usort(InclBeams ++ InclExtra), Files = EbinFiles ++ ExtraFiles, case zip:create("mem", Files, [memory]) of {ok, {"mem", ZipBin}} -> %% Archive was successfully created. Prefix that binary with our %% header and write to our escript file Shebang = rebar_config:get(Config, escript_shebang, "#!/usr/bin/env escript\n"), Comment = rebar_config:get(Config, escript_comment, "%%\n"), DefaultEmuArgs = ?FMT("%%! -pa ~s/~s/ebin\n", [AppNameStr, AppNameStr]), EmuArgs = rebar_config:get(Config, escript_emu_args, DefaultEmuArgs), Script = iolist_to_binary([Shebang, Comment, EmuArgs, ZipBin]), case file:write_file(Filename, Script) of ok -> ok; {error, WriteError} -> ?ERROR("Failed to write ~p script: ~p\n", [AppName, WriteError]), ?FAIL end; {error, ZipError} -> ?ERROR("Failed to construct ~p escript: ~p\n", [AppName, ZipError]), ?FAIL end, %% Finally, update executable perms for our script {ok, #file_info{mode = Mode}} = file:read_file_info(Filename), ok = file:change_mode(Filename, Mode bor 8#00111), {ok, Config}. clean(Config0, AppFile) -> %% Extract the application name from the archive -- this is the default %% name of the generated script {Config, AppName} = rebar_app_utils:app_name(Config0, AppFile), %% Get the output filename for the escript -- this may include dirs Filename = rebar_config:get_local(Config, escript_name, AppName), rebar_file_utils:delete_each([Filename]), {ok, Config}. %% =================================================================== %% Internal functions %% =================================================================== info(help, escriptize) -> info_help("Generate escript archive"); info(help, clean) -> info_help("Delete generated escript archive"). info_help(Description) -> ?CONSOLE( "~s.~n" "~n" "Valid rebar.config options:~n" " ~p~n" " ~p~n" " ~p~n" " ~p~n" " ~p~n", [ Description, {escript_name, "application"}, {escript_incl_apps, []}, {escript_shebang, "#!/usr/bin/env escript\n"}, {escript_comment, "%%\n"}, {escript_emu_args, "%%! -pa application/application/ebin\n"} ]). get_app_beams([], Acc) -> Acc; get_app_beams([App | Rest], Acc) -> case code:lib_dir(App, ebin) of {error, bad_name} -> ?ABORT("Failed to get ebin/ directory for " "~p escript_incl_apps.", [App]); Path -> Prefix = filename:join(atom_to_list(App), "ebin"), Acc2 = load_files(Prefix, "*", Path), get_app_beams(Rest, Acc2 ++ Acc) end. get_extra(Config) -> Extra = rebar_config:get_local(Config, escript_incl_extra, []), lists:foldl(fun({Wildcard, Dir}, Files) -> load_files(Wildcard, Dir) ++ Files end, [], Extra). load_files(Wildcard, Dir) -> load_files("", Wildcard, Dir). load_files(Prefix, Wildcard, Dir) -> [read_file(Prefix, Filename, Dir) || Filename <- filelib:wildcard(Wildcard, Dir)]. read_file(Prefix, Filename, Dir) -> Filename1 = case Prefix of "" -> Filename; _ -> filename:join([Prefix, Filename]) end, [dir_entries(filename:dirname(Filename1)), {Filename1, file_contents(filename:join(Dir, Filename))}]. file_contents(Filename) -> {ok, Bin} = file:read_file(Filename), Bin. %% Given a filename, return zip archive dir entries for each sub-dir. %% Required to work around issues fixed in OTP-10071. dir_entries(File) -> Dirs = dirs(File), [{Dir ++ "/", <<>>} || Dir <- Dirs]. %% Given "foo/bar/baz", return ["foo", "foo/bar", "foo/bar/baz"]. dirs(Dir) -> dirs1(filename:split(Dir), "", []). dirs1([], _, Acc) -> lists:reverse(Acc); dirs1([H|T], "", []) -> dirs1(T, H, [H]); dirs1([H|T], Last, Acc) -> Dir = filename:join(Last, H), dirs1(T, Dir, [Dir|Acc]). usort(List) -> lists:ukeysort(1, lists:flatten(List)).