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212 lines
6.0 KiB
212 lines
6.0 KiB
#!/usr/bin/env escript
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%% -*- erlang -*
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%%!
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-include_lib("kernel/include/file.hrl").
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main(Args) ->
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case lists:member("--help", Args) of
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true ->
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usage(),
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halt(0);
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false ->
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ok
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end,
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%% Get a string repr of build time
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BuiltTime = getTimeStr(),
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%% Get a string repr of first matching VCS changeset
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VcsInfo = vcsInfo([{git, ".git", "git describe --always --tags", "git status -s"}]),
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%% Check for force=1 flag to force a rebuild
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case lists:member("force=1", Args) of
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true ->
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rm("ebin/*.beam");
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false ->
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case filelib:is_file("ebin/rebar.beam") of
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true -> rm("ebin/rebar.beam");
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false -> io:fwrite("No beam files found.~n")
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end
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end,
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%% Add check for debug flag
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DebugFlag =
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case lists:member("debug", Args) of
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true -> debug_info;
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false -> undefined
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end,
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OtpInfo = string:strip(erlang:system_info(otp_release), both, $\n),
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%% Types dict:dict() and digraph:digraph() have been introduced in
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%% Erlang 17.
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%% At the same time, their counterparts dict() and digraph() are to be
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%% deprecated in Erlang 18. namespaced_types option is used to select
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%% proper type name depending on the OTP version used.
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%% Extract the system info of the version of OTP we use to compile rebar
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%% NamespacedTypes =
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%% case is_otp(OtpInfo, "^[0-9]+") of
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%% true -> {d, namespaced_types};
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%% false -> undefined
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%% end,
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%% Compile all src/*.erl to ebin
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%% To not accidentally try to compile files like Mac OS X resource forks,
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%% we only look for rebar source files that start with a letter.
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Opts = [
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DebugFlag,
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{outdir, "ebin"},
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{i, "include"},
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{d, 'BUILD_TIME', BuiltTime},
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{d, 'VCS_INFO', VcsInfo},
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{d, 'OTP_INFO', OtpInfo}
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],
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case make:files(filelib:wildcard("src/*.erl"), Opts) of
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up_to_date ->
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ok;
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error ->
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io:format("Failed to compile erlNpc files!\n"),
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halt(1)
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end,
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%% Make sure file:consult can parse the .app file
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case file:consult("ebin/erlNpc.app") of
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{ok, _} ->
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ok;
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{error, Reason} ->
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io:format("Invalid syntax in ebin/erlNpc.app: ~p\n", [Reason]),
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halt(1)
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end,
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%% Add ebin/ to our path
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true = code:add_path("ebin"),
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%% Run rebar compile to do proper .app validation etc.
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%% and rebar escriptize to create the rebar script
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%% RebarArgs = Args -- ["debug"], %% Avoid trying to run 'debug' command
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% rebar:main(["compile"] ++ RebarArgs),
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escriptize(),
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%% Finally, update executable perms for our script on *nix,
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%% or write out script files on win32.
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case os:type() of
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{unix, _} ->
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[] = os:cmd("chmod u+x erlNpc"),
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ok;
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{win32, _} ->
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writeWindowsScripts(),
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ok;
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_ ->
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ok
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end,
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%% Add a helpful message
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io:format(<<"Congratulations! You now have a self-contained script called"
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" \"erlNpc\" in\n"
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"your current working directory. "
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"Place this script anywhere in your path\n"
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"and you can use erlNpc to build native code for Erlang\n">>).
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usage() ->
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io:format(<<"Usage: bootstrap [OPTION]...~n">>),
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io:format(<<" force=1 unconditional build~n">>),
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io:format(<<" debug add debug information~n">>).
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%% is_otp(OtpInfo, Regex) ->
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%% case re:run(OtpInfo, Regex, [{capture, none}]) of
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%% match -> true;
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%% nomatch -> false
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%% end.
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rm(Path) ->
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NativePath = filename:nativename(Path),
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Cmd = case os:type() of
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{unix, _} -> "rm -f ";
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{win32, _} -> "del /q "
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end,
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[] = os:cmd(Cmd ++ NativePath),
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ok.
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getTimeStr() ->
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{{Y, M, D}, {H, Min, S}} = erlang:localtime(),
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lists:flatten(io_lib:format("~B_~2.10.0B_~2.10.0B ~B:~2.10.0B:~2.10.0B", [Y, M, D, H, Min, S])).
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vcsInfo([]) ->
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"No VCS info available.";
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vcsInfo([{Id, Dir, VsnCmd, StatusCmd} | Rest]) ->
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case filelib:is_dir(Dir) of
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true ->
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Vsn = string:strip(os:cmd(VsnCmd), both, $\n),
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Status =
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case string:strip(os:cmd(StatusCmd), both, $\n) of
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[] ->
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"";
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_ ->
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"-dirty"
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end,
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lists:concat([Id, " ", Vsn, Status]);
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false ->
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vcsInfo(Rest)
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end.
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writeWindowsScripts() ->
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CmdScript =
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"@echo off\r\n"
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"setlocal\r\n"
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"set rebarscript=%~f0\r\n"
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"escript.exe \"%rebarscript:.cmd=%\" %*\r\n",
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ok = file:write_file("erlNpc.cmd", CmdScript).
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escriptize() ->
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AppName = "erlNpc",
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ScriptName = "erlNpc",
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Files = loadEScriptFiles(AppName, "ebin", "*"),
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{ok, {"mem", ZipBin}} = zip:create("mem", Files, [memory]),
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Shebang = "#!/usr/bin/env escript\n",
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Comment = "%%\n",
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EmuArgs = io_lib:format("%%! -pa ~s/~s/ebin\n", [AppName, AppName]),
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Script = iolist_to_binary([Shebang, Comment, EmuArgs, ZipBin]),
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ok = file:write_file(ScriptName, Script),
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%% Finally, update executable perms for our script
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{ok, #file_info{mode = Mode}} = file:read_file_info(ScriptName),
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ok = file:change_mode(ScriptName, Mode bor 8#00111).
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loadEScriptFiles(AppName, Path, WildCard) ->
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FileNames = filelib:wildcard(WildCard, Path),
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Entries =
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lists:flatmap(
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fun(FN) ->
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FPath = filename:join(Path, FN),
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{ok, Contents} = file:read_file(FPath),
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ZipPath = filename:join(AppName, FPath),
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[{ZipPath, Contents} | dirEntries(ZipPath)]
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end,
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FileNames),
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usort(Entries).
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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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dirEntries(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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