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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_prv_escriptize).
-behaviour(provider).
-export([init/1, do/1, format_error/1]).
-define(PROVIDER, escriptize).
-define(DEPS, [compile]).
-include("rebar.hrl").
-include_lib("providers/include/providers.hrl").
-include_lib("kernel/include/file.hrl").
%%%=============================================================================
%%% API
%%%=============================================================================
-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
init(State) ->
Provider = providers:create([
{name, ?PROVIDER},
{module, ?MODULE},
{bare, true},
{deps, ?DEPS},
{example, "rebar3 escriptize"},
{opts, []},
{short_desc, "Generate escript archive."},
{desc, desc()}
]),
{ok, rebar_state:add_provider(State, Provider)}.
desc() ->
"Generate an escript executable containing "
"the project's and its dependencies' BEAM files.".
do(State) ->
?INFO("Building escript...", []),
case rebar_state:get(State, escript_main_app, undefined) of
undefined ->
case rebar_state:project_apps(State) of
[App] ->
escriptize(State, App);
_ ->
?PRV_ERROR(no_main_app)
end;
Name ->
AllApps = rebar_state:all_deps(State)++rebar_state:project_apps(State),
{ok, AppInfo} = rebar_app_utils:find(ec_cnv:to_binary(Name), AllApps),
escriptize(State, AppInfo)
end.
escriptize(State0, App) ->
AppName = rebar_app_info:name(App),
AppNameStr = ec_cnv:to_list(AppName),
%% Get the output filename for the escript -- this may include dirs
Filename = filename:join([rebar_dir:base_dir(State0), "bin",
rebar_state:get(State0, escript_name, AppName)]),
?DEBUG("Creating escript file ~s", [Filename]),
ok = filelib:ensure_dir(Filename),
State = rebar_state:escript_path(State0, 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.
InclApps = lists:usort([ec_cnv:to_atom(AppName) | rebar_state:get(State, escript_incl_apps, [])
++ all_deps(State)]),
AllApps = rebar_state:all_deps(State)++rebar_state:project_apps(State),
InclBeams = get_apps_beams(InclApps, AllApps),
%% 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(State),
%% 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 = get_nonempty(EbinFiles ++ ExtraFiles),
DefaultEmuArgs = ?FMT("%%! -escript main ~s -pz ~s/~s/ebin\n",
[AppNameStr, AppNameStr, AppNameStr]),
EscriptSections =
[ {shebang,
def("#!", State, escript_shebang, "#!/usr/bin/env escript\n")}
, {comment, def("%%", State, escript_comment, "%%\n")}
, {emu_args, def("%%!", State, escript_emu_args, DefaultEmuArgs)}
, {archive, Files, []} ],
case escript:create(Filename, EscriptSections) of
ok -> ok;
{error, EscriptError} ->
throw(?PRV_ERROR({escript_creation_failed, AppName, EscriptError}))
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, State}.
-spec format_error(any()) -> iolist().
format_error({write_failed, AppName, WriteError}) ->
io_lib:format("Failed to write ~p script: ~p", [AppName, WriteError]);
format_error({zip_error, AppName, ZipError}) ->
io_lib:format("Failed to construct ~p escript: ~p", [AppName, ZipError]);
format_error({bad_name, App}) ->
io_lib:format("Failed to get ebin/ directory for "
"escript_incl_app: ~p", [App]);
format_error(no_main_app) ->
io_lib:format("Multiple project apps and {escript_main_app, atom()}."
" not set in rebar.config", []).
%% ===================================================================
%% Internal functions
%% ===================================================================
get_apps_beams(Apps, AllApps) ->
get_apps_beams(Apps, AllApps, []).
get_apps_beams([], _, Acc) ->
Acc;
get_apps_beams([App | Rest], AllApps, Acc) ->
case rebar_app_utils:find(ec_cnv:to_binary(App), AllApps) of
{ok, App1} ->
OutDir = filename:absname(rebar_app_info:ebin_dir(App1)),
Beams = get_app_beams(App, OutDir),
get_apps_beams(Rest, AllApps, Beams ++ Acc);
_->
case code:lib_dir(App, ebin) of
{error, bad_name} ->
throw(?PRV_ERROR({bad_name, App}));
Path ->
Beams = get_app_beams(App, Path),
get_apps_beams(Rest, AllApps, Beams ++ Acc)
end
end.
get_app_beams(App, Path) ->
Prefix = filename:join(atom_to_list(App), "ebin"),
load_files(Prefix, "*.beam", Path) ++
load_files(Prefix, "*.app", Path).
get_extra(State) ->
Extra = rebar_state:get(State, 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)).
get_nonempty(Files) ->
[{FName,FBin} || {FName,FBin} <- Files, FBin =/= <<>>].
all_deps(State) ->
[list_to_existing_atom(binary_to_list(rebar_app_info:name(App)))
|| App <- rebar_state:all_deps(State)].
def(Rm, State, Key, Default) ->
Value0 = rebar_state:get(State, Key, Default),
case Rm of
"#!" -> "#!" ++ Value = Value0, rm_newline(Value);
"%%" -> "%%" ++ Value = Value0, rm_newline(Value);
"%%!" -> "%%!" ++ Value = Value0, rm_newline(Value)
end.
rm_newline(String) ->
[C || C <- String, C =/= $\n].
|
