%% -*- 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_file_utils). -export([try_consult/1, format_error/1, symlink_or_copy/2, rm_rf/1, cp_r/2, mv/2, delete_each/1, write_file_if_contents_differ/2, system_tmpdir/0, system_tmpdir/1, reset_dir/1, touch/1]). -include("rebar.hrl"). -include_lib("providers/include/providers.hrl"). -include_lib("kernel/include/file.hrl"). %% =================================================================== %% Public API %% =================================================================== try_consult(File) -> case file:consult(File) of {ok, Terms} -> Terms; {error, enoent} -> []; {error, Reason} -> throw(?PRV_ERROR({bad_term_file, File, Reason})) end. format_error({bad_term_file, AppFile, Reason}) -> io_lib:format("Error reading file ~s: ~s", [AppFile, file:format_error(Reason)]). symlink_or_copy(Source, Target) -> Link = case os:type() of {win32, _} -> Source; _ -> rebar_dir:make_relative_path(Source, Target) end, case file:make_symlink(Link, Target) of ok -> ok; {error, eexist} -> ok; {error, _} -> case os:type() of {win32, _} -> S = unicode:characters_to_list(Source), T = unicode:characters_to_list(Target), case filelib:is_dir(S) of true -> win32_symlink(S, T); false -> cp_r([S], T) end; _ -> case filelib:is_dir(Target) of true -> ok; false -> cp_r([Source], Target) end end end. win32_symlink(Source, Target) -> Res = rebar_utils:sh( ?FMT("cmd /c mklink /j \"~s\" \"~s\"", [rebar_utils:escape_double_quotes(filename:nativename(Target)), rebar_utils:escape_double_quotes(filename:nativename(Source))]), [{use_stdout, false}, return_on_error]), case win32_ok(Res) of true -> ok; false -> {error, lists:flatten( io_lib:format("Failed to symlink ~s to ~s~n", [Source, Target]))} end. %% @doc Remove files and directories. %% Target is a single filename, directoryname or wildcard expression. -spec rm_rf(string()) -> 'ok'. rm_rf(Target) -> case os:type() of {unix, _} -> EscTarget = rebar_utils:escape_chars(Target), {ok, []} = rebar_utils:sh(?FMT("rm -rf ~s", [EscTarget]), [{use_stdout, false}, abort_on_error]), ok; {win32, _} -> Filelist = filelib:wildcard(Target), Dirs = [F || F <- Filelist, filelib:is_dir(F)], Files = Filelist -- Dirs, ok = delete_each(Files), ok = delete_each_dir_win32(Dirs), ok end. -spec cp_r(list(string()), file:filename()) -> 'ok'. cp_r([], _Dest) -> ok; cp_r(Sources, Dest) -> case os:type() of {unix, _} -> EscSources = [rebar_utils:escape_chars(Src) || Src <- Sources], SourceStr = string:join(EscSources, " "), {ok, []} = rebar_utils:sh(?FMT("cp -R ~s \"~s\"", [SourceStr, rebar_utils:escape_double_quotes(Dest)]), [{use_stdout, false}, abort_on_error]), ok; {win32, _} -> lists:foreach(fun(Src) -> ok = cp_r_win32(Src,Dest) end, Sources), ok end. -spec mv(string(), file:filename()) -> 'ok'. mv(Source, Dest) -> case os:type() of {unix, _} -> EscSource = rebar_utils:escape_chars(Source), EscDest = rebar_utils:escape_chars(Dest), {ok, []} = rebar_utils:sh(?FMT("mv ~s ~s", [EscSource, EscDest]), [{use_stdout, false}, abort_on_error]), ok; {win32, _} -> Cmd = case filelib:is_dir(Source) of true -> ?FMT("robocopy /move /s \"~s\" \"~s\" 1> nul", [rebar_utils:escape_double_quotes(filename:nativename(Source)), rebar_utils:escape_double_quotes(filename:nativename(Dest))]); false -> ?FMT("robocopy /move /s \"~s\" \"~s\" \"~s\" 1> nul", [rebar_utils:escape_double_quotes(filename:nativename(filename:dirname(Source))), rebar_utils:escape_double_quotes(filename:nativename(Dest)), rebar_utils:escape_double_quotes(filename:basename(Source))]) end, Res = rebar_utils:sh(Cmd, [{use_stdout, false}, return_on_error]), case win32_ok(Res) of true -> ok; false -> {error, lists:flatten( io_lib:format("Failed to move ~s to ~s~n", [Source, Dest]))} end end. win32_ok({ok, _}) -> true; win32_ok({error, {Rc, _}}) when Rc<9; Rc=:=16 -> true; win32_ok(_) -> false. delete_each([]) -> ok; delete_each([File | Rest]) -> case file:delete(File) of ok -> delete_each(Rest); {error, enoent} -> delete_each(Rest); {error, Reason} -> ?ERROR("Failed to delete file ~s: ~p\n", [File, Reason]), ?FAIL end. write_file_if_contents_differ(Filename, Bytes) -> ToWrite = iolist_to_binary(Bytes), case file:read_file(Filename) of {ok, ToWrite} -> ok; {ok, _} -> file:write_file(Filename, ToWrite); {error, _} -> file:write_file(Filename, ToWrite) end. %% returns an os appropriate tmpdir given a path -spec system_tmpdir() -> file:filename(). -spec system_tmpdir(PathComponents) -> file:filename() when PathComponents :: [file:name()]. system_tmpdir() -> system_tmpdir([]). system_tmpdir(PathComponents) -> Tmp = case erlang:system_info(system_architecture) of "win32" -> "./tmp"; _SysArch -> "/tmp" end, filename:join([Tmp|PathComponents]). %% recursively removes a directory and then recreates the same %% directory but empty -spec reset_dir(Path) -> ok | {error, Reason} when Path :: file:name(), Reason :: file:posix(). reset_dir(Path) -> %% delete the directory if it exists _ = ec_file:remove(Path, [recursive]), %% recreate the directory filelib:ensure_dir(filename:join([Path, "dummy.beam"])). %% Linux touch but using erlang functions to work in bot *nix os and %% windows -spec touch(Path) -> ok | {error, Reason} when Path :: file:name(), Reason :: file:posix(). touch(Path) -> {ok, A} = file:read_file_info(Path), ok = file:write_file_info(Path, A#file_info{mtime = calendar:local_time(), atime = calendar:local_time()}). %% =================================================================== %% Internal functions %% =================================================================== delete_each_dir_win32([]) -> ok; delete_each_dir_win32([Dir | Rest]) -> {ok, []} = rebar_utils:sh(?FMT("rd /q /s \"~s\"", [rebar_utils:escape_double_quotes(filename:nativename(Dir))]), [{use_stdout, false}, return_on_error]), delete_each_dir_win32(Rest). xcopy_win32(Source,Dest)-> %% "xcopy \"~s\" \"~s\" /q /y /e 2> nul", Chanegd to robocopy to %% handle long names. May have issues with older windows. Cmd = case filelib:is_dir(Source) of true -> ?FMT("robocopy \"~s\" \"~s\" /e /is 1> nul", [rebar_utils:escape_double_quotes(filename:nativename(Source)), rebar_utils:escape_double_quotes(filename:nativename(Dest))]); false -> ?FMT("robocopy \"~s\" \"~s\" \"~s\" /e /is 1> nul", [rebar_utils:escape_double_quotes(filename:nativename(filename:dirname(Source))), rebar_utils:escape_double_quotes(filename:nativename(Dest)), rebar_utils:escape_double_quotes(filename:basename(Source))]) end, Res = rebar_utils:sh(Cmd, [{use_stdout, false}, return_on_error]), case win32_ok(Res) of true -> ok; false -> {error, lists:flatten( io_lib:format("Failed to copy ~s to ~s~n", [Source, Dest]))} end. cp_r_win32({true, SourceDir}, {true, DestDir}) -> %% from directory to directory ok = case file:make_dir(DestDir) of {error, eexist} -> ok; Other -> Other end, ok = xcopy_win32(SourceDir, DestDir); cp_r_win32({false, Source} = S,{true, DestDir}) -> %% from file to directory cp_r_win32(S, {false, filename:join(DestDir, filename:basename(Source))}); cp_r_win32({false, Source},{false, Dest}) -> %% from file to file {ok,_} = file:copy(Source, Dest), ok; cp_r_win32({true, SourceDir}, {false, DestDir}) -> case filelib:is_regular(DestDir) of true -> %% From directory to file? This shouldn't happen {error, lists:flatten( io_lib:format("Cannot copy dir (~p) to file (~p)\n", [SourceDir, DestDir]))}; false -> %% Specifying a target directory that doesn't currently exist. %% So let's attempt to create this directory case filelib:ensure_dir(filename:join(DestDir, "dummy")) of ok -> ok = xcopy_win32(SourceDir, DestDir); {error, Reason} -> {error, lists:flatten( io_lib:format("Unable to create dir ~p: ~p\n", [DestDir, Reason]))} end end; cp_r_win32(Source,Dest) -> Dst = {filelib:is_dir(Dest), Dest}, lists:foreach(fun(Src) -> ok = cp_r_win32({filelib:is_dir(Src), Src}, Dst) end, filelib:wildcard(Source)), ok.