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%% -*- tab-width: 4;erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009, 2010 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_utils).
-export([get_cwd/0,
is_arch/1,
get_arch/0,
sh/2,
find_files/2,
now_str/0,
ensure_dir/1,
beam_to_mod/2, beams/1,
erl_to_mod/1,
abort/2,
escript_foldl/3,
find_executable/1]).
-include("rebar.hrl").
%% ====================================================================
%% Public API
%% ====================================================================
get_cwd() ->
{ok, Dir} = file:get_cwd(),
Dir.
is_arch(ArchRegex) ->
case re:run(get_arch(), ArchRegex, [{capture, none}]) of
match ->
true;
nomatch ->
false
end.
get_arch() ->
Words = integer_to_list(8 * erlang:system_info(wordsize)),
erlang:system_info(otp_release) ++ "-"
++ erlang:system_info(system_architecture) ++ "-" ++ Words.
%%
%% Options = [Option] -- defaults to [use_stdout, abort_on_error]
%% Option = ErrorOption | OutputOption | {cd, string()} | {env, Env}
%% ErrorOption = return_on_error | abort_on_error | {abort_on_error, string()}
%% OutputOption = use_stdout | {use_stdout, bool()}
%% Env = [{string(), Val}]
%% Val = string() | false
%%
sh(Command0, Options0) ->
?INFO("sh: ~s\n~p\n", [Command0, Options0]),
DefaultOptions = [use_stdout, abort_on_error],
Options = lists:map(fun expand_sh_flag/1,
proplists:compact(Options0 ++ DefaultOptions)),
ErrorHandler = proplists:get_value(error_handler, Options),
OutputHandler = proplists:get_value(output_handler, Options),
Command = patch_on_windows(Command0),
PortSettings = proplists:get_all_values(port_settings, Options) ++
[exit_status, {line, 16384}, use_stdio, stderr_to_stdout, hide],
Port = open_port({spawn, Command}, PortSettings),
case sh_loop(Port, OutputHandler, []) of
{ok, Output} ->
{ok, Output};
{error, Rc} ->
ErrorHandler(Command, Rc)
end.
%% We need a bash shell to execute on windows
%% also the port doesn't seem to close from time to time (mingw)
patch_on_windows(Cmd) ->
case os:type() of
{win32,nt} ->
case find_executable("bash") of
false -> Cmd;
Bash ->
Bash ++ " -c \"" ++ Cmd ++ "; echo _port_cmd_status_ $?\" "
end;
_ ->
Cmd
end.
find_files(Dir, Regex) ->
filelib:fold_files(Dir, Regex, true, fun(F, Acc) -> [F | Acc] end, []).
now_str() ->
{{Year, Month, Day}, {Hour, Minute, Second}} = calendar:local_time(),
lists:flatten(io_lib:format("~4b/~2..0b/~2..0b ~2..0b:~2..0b:~2..0b",
[Year, Month, Day, Hour, Minute, Second])).
%% TODO: filelib:ensure_dir/1 corrected in R13B04. Remove when we drop
%% support for OTP releases older than R13B04.
ensure_dir(Path) ->
case filelib:ensure_dir(Path) of
ok ->
ok;
{error,eexist} ->
ok;
Error ->
Error
end.
-spec abort(string(), [term()]) -> no_return().
abort(String, Args) ->
?ERROR(String, Args),
halt(1).
%% TODO: Rename emulate_escript_foldl to escript_foldl and remove
%% this function when the time is right. escript:foldl/3 was an
%% undocumented exported fun and has been removed in R14.
escript_foldl(Fun, Acc, File) ->
{module, zip} = code:ensure_loaded(zip),
case erlang:function_exported(zip, foldl, 3) of
true ->
emulate_escript_foldl(Fun, Acc, File);
false ->
escript:foldl(Fun, Acc, File)
end.
find_executable(Name) ->
case os:find_executable(Name) of
false -> false;
Path ->
"\"" ++ filename:nativename(Path) ++ "\""
end.
%% ====================================================================
%% Internal functions
%% ====================================================================
expand_sh_flag(return_on_error) ->
{error_handler,
fun(_Command, Rc) ->
{error, Rc}
end};
expand_sh_flag({abort_on_error, Message}) ->
{error_handler,
fun(_Command, _Rc) ->
?ABORT(Message, [])
end};
expand_sh_flag(abort_on_error) ->
{error_handler,
fun log_and_abort/2};
expand_sh_flag(use_stdout) ->
{output_handler,
fun(Line, Acc) ->
?CONSOLE("~s", [Line]),
[Acc | Line]
end};
expand_sh_flag({use_stdout, false}) ->
{output_handler,
fun(Line, Acc) ->
[Acc | Line]
end};
expand_sh_flag({cd, Dir}) ->
{port_settings, {cd, Dir}};
expand_sh_flag({env, Env}) ->
{port_settings, {env, Env}}.
-spec log_and_abort(string(), integer()) -> no_return().
log_and_abort(Command, Rc) ->
?ABORT("~s failed with error: ~w\n", [Command, Rc]).
sh_loop(Port, Fun, Acc) ->
receive
{Port, {data, {_, "_port_cmd_status_ " ++ Status}}} ->
(catch erlang:port_close(Port)), % sigh () for indentation
case list_to_integer(Status) of
0 -> {ok, lists:flatten(Acc)};
Rc -> {error, Rc}
end;
{Port, {data, {eol, Line}}} ->
sh_loop(Port, Fun, Fun(Line ++ "\n", Acc));
{Port, {data, {noeol, Line}}} ->
sh_loop(Port, Fun, Fun(Line, Acc));
{Port, {exit_status, 0}} ->
{ok, lists:flatten(Acc)};
{Port, {exit_status, Rc}} ->
{error, Rc}
end.
beam_to_mod(Dir, Filename) ->
[Dir | Rest] = filename:split(Filename),
list_to_atom(filename:basename(string:join(Rest, "."), ".beam")).
erl_to_mod(Filename) ->
list_to_atom(filename:rootname(filename:basename(Filename))).
beams(Dir) ->
filelib:fold_files(Dir, ".*\.beam\$", true,
fun(F, Acc) -> [F | Acc] end, []).
emulate_escript_foldl(Fun, Acc, File) ->
case escript:extract(File, [compile_source]) of
{ok, [_Shebang, _Comment, _EmuArgs, Body]} ->
case Body of
{source, BeamCode} ->
GetInfo = fun() -> file:read_file_info(File) end,
GetBin = fun() -> BeamCode end,
{ok, Fun(".", GetInfo, GetBin, Acc)};
{beam, BeamCode} ->
GetInfo = fun() -> file:read_file_info(File) end,
GetBin = fun() -> BeamCode end,
{ok, Fun(".", GetInfo, GetBin, Acc)};
{archive, ArchiveBin} ->
zip:foldl(Fun, Acc, {File, ArchiveBin})
end;
{error, _} = Error ->
Error
end.
|
