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%% -*- 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]).
-include("rebar.hrl").
-include_lib("kernel/include/file.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
escriptize(Config, AppFile) ->
%% Extract the application name from the archive -- this is the default
%% name of the generated script
AppName = rebar_app_utils:app_name(AppFile),
%% 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, []), []),
%% Construct the archive of everything in ebin/ dir -- put it on the
%% top-level of the zip file so that code loading works properly.
Files = load_files("*", "ebin") ++ InclBeams,
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
Script = <<"#!/usr/bin/env escript\n", ZipBin/binary>>,
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#00100),
ok.
clean(Config, AppFile) ->
%% Extract the application name from the archive -- this is the default
%% name of the generated script
AppName = rebar_app_utils:app_name(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]).
%% ===================================================================
%% Internal functions
%% ===================================================================
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 ->
Acc2 = [{filename:join([App, ebin, F]), file_contents(filename:join(Path, F))} ||
F <- filelib:wildcard("*", Path)],
get_app_beams(Rest, Acc2 ++ Acc)
end.
load_files(Wildcard, Dir) ->
[read_file(Filename, Dir) || Filename <- filelib:wildcard(Wildcard, Dir)].
read_file(Filename, Dir) ->
{Filename, file_contents(filename:join(Dir, Filename))}.
file_contents(Filename) ->
{ok, Bin} = file:read_file(Filename),
Bin.
|
