mirror of
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132 lines
5.4 KiB
Erlang
132 lines
5.4 KiB
Erlang
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
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%% ex: ts=4 sw=4 et
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%% -------------------------------------------------------------------
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%%
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%% rebar: Erlang Build Tools
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%%
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%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
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%%
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%%
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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%% -------------------------------------------------------------------
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-module(rebar_escripter).
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-export([escriptize/2,
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clean/2]).
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-include("rebar.hrl").
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-include_lib("kernel/include/file.hrl").
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%% ===================================================================
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%% Public API
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%% ===================================================================
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escriptize(Config0, AppFile) ->
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%% Extract the application name from the archive -- this is the default
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%% name of the generated script
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{Config, AppName} = rebar_app_utils:app_name(Config0, AppFile),
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%% Get the output filename for the escript -- this may include dirs
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Filename = rebar_config:get_local(Config, escript_name, AppName),
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ok = filelib:ensure_dir(Filename),
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%% Look for a list of other applications (dependencies) to include
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%% in the output file. We then use the .app files for each of these
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%% to pull in all the .beam files.
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InclBeams = get_app_beams(
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rebar_config:get_local(Config, escript_incl_apps, []), []),
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%% Look for a list of extra files to include in the output file.
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%% For internal rebar-private use only. Do not use outside rebar.
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InclExtra = get_extra(Config),
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%% Construct the archive of everything in ebin/ dir -- put it on the
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%% top-level of the zip file so that code loading works properly.
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Files = load_files("*", "ebin") ++ InclBeams ++ InclExtra,
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case zip:create("mem", Files, [memory]) of
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{ok, {"mem", ZipBin}} ->
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%% Archive was successfully created. Prefix that binary with our
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%% header and write to our escript file
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Shebang = rebar_config:get(Config, escript_shebang,
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"#!/usr/bin/env escript\n"),
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Comment = rebar_config:get(Config, escript_comment, "%%\n"),
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EmuArgs = rebar_config:get(Config, escript_emu_args, "%%!\n"),
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Script = iolist_to_binary([Shebang, Comment, EmuArgs, ZipBin]),
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case file:write_file(Filename, Script) of
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ok ->
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ok;
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{error, WriteError} ->
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?ERROR("Failed to write ~p script: ~p\n",
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[AppName, WriteError]),
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?FAIL
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end;
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{error, ZipError} ->
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?ERROR("Failed to construct ~p escript: ~p\n",
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[AppName, ZipError]),
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?FAIL
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end,
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%% Finally, update executable perms for our script
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{ok, #file_info{mode = Mode}} = file:read_file_info(Filename),
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ok = file:change_mode(Filename, Mode bor 8#00111),
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{ok, Config}.
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clean(Config0, AppFile) ->
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%% Extract the application name from the archive -- this is the default
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%% name of the generated script
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{Config, AppName} = rebar_app_utils:app_name(Config0, AppFile),
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%% Get the output filename for the escript -- this may include dirs
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Filename = rebar_config:get_local(Config, escript_name, AppName),
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rebar_file_utils:delete_each([Filename]),
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{ok, Config}.
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%% ===================================================================
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%% Internal functions
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%% ===================================================================
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get_app_beams([], Acc) ->
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Acc;
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get_app_beams([App | Rest], Acc) ->
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case code:lib_dir(App, ebin) of
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{error, bad_name} ->
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?ABORT("Failed to get ebin/ directory for "
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"~p escript_incl_apps.", [App]);
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Path ->
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Acc2 = [{filename:join([App, ebin, F]),
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file_contents(filename:join(Path, F))} ||
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F <- filelib:wildcard("*", Path)],
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get_app_beams(Rest, Acc2 ++ Acc)
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end.
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get_extra(Config) ->
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Extra = rebar_config:get_local(Config, escript_incl_extra, []),
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lists:foldl(fun({Wildcard, Dir}, Files) ->
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load_files(Wildcard, Dir) ++ Files
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end, [], Extra).
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load_files(Wildcard, Dir) ->
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[read_file(Filename, Dir) || Filename <- filelib:wildcard(Wildcard, Dir)].
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read_file(Filename, Dir) ->
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{Filename, file_contents(filename:join(Dir, Filename))}.
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file_contents(Filename) ->
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{ok, Bin} = file:read_file(Filename),
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Bin.
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