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222 linhas
8.1 KiB
222 linhas
8.1 KiB
%% -*- 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_prv_escriptize).
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-behaviour(provider).
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-export([init/1, do/1, format_error/1]).
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-define(PROVIDER, escriptize).
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-define(DEPS, [compile]).
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-include("rebar.hrl").
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-include_lib("providers/include/providers.hrl").
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-include_lib("kernel/include/file.hrl").
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%%%=============================================================================
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%%% API
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%%%=============================================================================
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-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
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init(State) ->
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Provider = providers:create([
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{name, ?PROVIDER},
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{module, ?MODULE},
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{bare, false},
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{deps, ?DEPS},
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{example, "rebar3 escriptize"},
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{opts, []},
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{short_desc, "Generate escript archive"},
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{desc, desc()}
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]),
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{ok, rebar_state:add_provider(State, Provider)}.
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desc() ->
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"Generate an escript executable containing "
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"the project's and its dependencies' BEAM files.".
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do(State) ->
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?INFO("Building escript...", []),
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escriptize(State).
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escriptize(State0) ->
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App1 = case rebar_state:project_apps(State0) of
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[App] ->
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App;
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Apps ->
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case rebar_state:get(State0, escript_main_app, undefined) of
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undefined ->
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?PRV_ERROR(no_main_app);
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Name ->
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rebar_app_utils:find(Name, Apps)
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end
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end,
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AppName = rebar_app_info:name(App1),
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AppNameStr = ec_cnv:to_list(AppName),
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%% Get the output filename for the escript -- this may include dirs
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Filename = filename:join([rebar_dir:base_dir(State0), "bin",
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rebar_state:get(State0, escript_name, AppName)]),
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ok = filelib:ensure_dir(Filename),
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State = rebar_state:escript_path(State0, 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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InclApps = lists:usort(rebar_state:get(State, escript_incl_apps, [])
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++ all_deps(State)),
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InclBeams = get_app_beams(InclApps),
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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(State),
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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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EbinPrefix = filename:join(AppNameStr, "ebin"),
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EbinFiles = usort(load_files(EbinPrefix, "*", "ebin")),
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ExtraFiles = usort(InclBeams ++ InclExtra),
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Files = get_nonempty(EbinFiles ++ ExtraFiles),
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DefaultEmuArgs = ?FMT("%%! -escript main ~s -pa ~s/~s/ebin\n",
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[AppNameStr, AppNameStr, AppNameStr]),
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EscriptSections =
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[ {shebang,
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def("#!", State, escript_shebang, "#!/usr/bin/env escript\n")}
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, {comment, def("%%", State, escript_comment, "%%\n")}
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, {emu_args, def("%%!", State, escript_emu_args, DefaultEmuArgs)}
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, {archive, Files, []} ],
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case escript:create(Filename, EscriptSections) of
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ok -> ok;
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{error, EscriptError} ->
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throw(?PRV_ERROR({escript_creation_failed, AppName, EscriptError}))
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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, State}.
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-spec format_error(any()) -> iolist().
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format_error({write_failed, AppName, WriteError}) ->
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io_lib:format("Failed to write ~p script: ~p", [AppName, WriteError]);
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format_error({zip_error, AppName, ZipError}) ->
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io_lib:format("Failed to construct ~p escript: ~p", [AppName, ZipError]);
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format_error({bad_name, App}) ->
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io_lib:format("Failed to get ebin/ directory for "
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"escript_incl_app: ~p", [App]);
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format_error(no_main_app) ->
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io_lib:format("Multiple project apps and {rebar_escript_plugin, [{main_app, atom()}]}."
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" not set in rebar.config", []).
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%% ===================================================================
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%% Internal functions
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%% ===================================================================
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get_app_beams(Apps) ->
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get_app_beams(Apps, []).
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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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throw(?PRV_ERROR({bad_name, App}));
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Path ->
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Prefix = filename:join(atom_to_list(App), "ebin"),
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Acc2 = load_files(Prefix, "*.beam", Path),
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get_app_beams(Rest, Acc2 ++ Acc)
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end.
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get_extra(State) ->
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Extra = rebar_state:get(State, 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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load_files("", Wildcard, Dir).
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load_files(Prefix, Wildcard, Dir) ->
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[read_file(Prefix, Filename, Dir)
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|| Filename <- filelib:wildcard(Wildcard, Dir)].
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read_file(Prefix, Filename, Dir) ->
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Filename1 = case Prefix of
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"" ->
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Filename;
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_ ->
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filename:join([Prefix, Filename])
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end,
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[dir_entries(filename:dirname(Filename1)),
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{Filename1, 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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%% Given a filename, return zip archive dir entries for each sub-dir.
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%% Required to work around issues fixed in OTP-10071.
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dir_entries(File) ->
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Dirs = dirs(File),
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[{Dir ++ "/", <<>>} || Dir <- Dirs].
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%% Given "foo/bar/baz", return ["foo", "foo/bar", "foo/bar/baz"].
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dirs(Dir) ->
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dirs1(filename:split(Dir), "", []).
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dirs1([], _, Acc) ->
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lists:reverse(Acc);
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dirs1([H|T], "", []) ->
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dirs1(T, H, [H]);
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dirs1([H|T], Last, Acc) ->
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Dir = filename:join(Last, H),
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dirs1(T, Dir, [Dir|Acc]).
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usort(List) ->
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lists:ukeysort(1, lists:flatten(List)).
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get_nonempty(Files) ->
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[{FName,FBin} || {FName,FBin} <- Files, FBin =/= <<>>].
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all_deps(State) ->
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[list_to_existing_atom(binary_to_list(rebar_app_info:name(App)))
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|| App <- rebar_state:all_deps(State)].
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def(Rm, State, Key, Default) ->
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Value0 = rebar_state:get(State, Key, Default),
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case Rm of
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"#!" -> "#!" ++ Value = Value0, rm_newline(Value);
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"%%" -> "%%" ++ Value = Value0, rm_newline(Value);
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"%%!" -> "%%!" ++ Value = Value0, rm_newline(Value)
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end.
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rm_newline(String) ->
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[C || C <- String, C =/= $\n].
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