%% %% %CopyrightBegin% %% %% Copyright Ericsson AB 2005-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. %% You may obtain a copy of the License at %% %% http://www.apache.org/licenses/LICENSE-2.0 %% %% Unless required by applicable law or agreed to in writing, software %% distributed under the License is distributed on an "AS IS" BASIS, %% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %% See the License for the specific language governing permissions and %% limitations under the License. %% %% %CopyrightEnd% %% -module(filelib_SUITE). -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, init_per_testcase/2,end_per_testcase/2, wildcard_one/1,wildcard_two/1,wildcard_errors/1, fold_files/1,otp_5960/1,ensure_dir_eexist/1,ensure_dir_symlink/1, wildcard_symlink/1, is_file_symlink/1, file_props_symlink/1, find_source/1, find_source_subdir/1]). -import(lists, [foreach/2]). -include_lib("common_test/include/ct.hrl"). -include_lib("kernel/include/file.hrl"). -define(PRIM_FILE, prim_file). init_per_testcase(_Case, Config) -> Config. end_per_testcase(_Case, _Config) -> ok. suite() -> [{ct_hooks,[ts_install_cth]}, {timetrap,{minutes,5}}]. all() -> [wildcard_one, wildcard_two, wildcard_errors, fold_files, otp_5960, ensure_dir_eexist, ensure_dir_symlink, wildcard_symlink, is_file_symlink, file_props_symlink, find_source, find_source_subdir]. groups() -> []. init_per_suite(Config) -> Config. end_per_suite(_Config) -> ok. init_per_group(_GroupName, Config) -> Config. end_per_group(_GroupName, Config) -> Config. wildcard_one(Config) when is_list(Config) -> {ok,OldCwd} = file:get_cwd(), Dir = filename:join(proplists:get_value(priv_dir, Config), "wildcard_one"), ok = file:make_dir(Dir), do_wildcard_1(Dir, fun(Wc) -> filelib:wildcard(Wc, Dir, erl_prim_loader) end), file:set_cwd(Dir), do_wildcard_1(Dir, fun(Wc) -> L = filelib:wildcard(Wc), L = filelib:wildcard(disable_prefix_opt(Wc)), L = filelib:wildcard(Wc, erl_prim_loader), L = filelib:wildcard(Wc, "."), L = filelib:wildcard(Wc, Dir), L = filelib:wildcard(disable_prefix_opt(Wc), Dir), L = filelib:wildcard(Wc, Dir++"/.") end), file:set_cwd(OldCwd), ok = file:del_dir(Dir), ok. wildcard_two(Config) when is_list(Config) -> Dir = filename:join(proplists:get_value(priv_dir, Config), "wildcard_two"), ok = file:make_dir(Dir), do_wildcard_1(Dir, fun(Wc) -> io:format("~p~n",[{Wc,Dir, X = filelib:wildcard(Wc, Dir)}]),X end), do_wildcard_1(Dir, fun(Wc) -> filelib:wildcard(Wc, Dir++"/") end), do_wildcard_1(Dir, fun(Wc) -> filelib:wildcard(Wc, Dir++"/.") end), case os:type() of {win32,_} -> ok; _ -> do_wildcard_1(Dir, fun(Wc) -> filelib:wildcard(Wc, "//"++Dir) end) end, ok = file:del_dir(Dir), ok. wildcard_errors(Config) when is_list(Config) -> wcc("{", missing_delimiter), wcc("{a", missing_delimiter), wcc("{a,", missing_delimiter), wcc("{a,b", missing_delimiter), ok. wcc(Wc, Error) -> {'EXIT',{{badpattern,Error}, [{filelib,compile_wildcard,1,_}|_]}} = (catch filelib:compile_wildcard(Wc)), {'EXIT',{{badpattern,Error}, [{filelib,wildcard,1,_}|_]}} = (catch filelib:wildcard(Wc)), {'EXIT',{{badpattern,Error}, [{filelib,wildcard,2,_}|_]}} = (catch filelib:wildcard(Wc, ".")). disable_prefix_opt([C|Wc]) when $a =< C, C =< $z; C =:= $@ -> %% There is an optimization for patterns that have a literal prefix %% (such as "lib/compiler/ebin/*"). Test that we'll get the same result %% if we disable that optimization. [$[, C, $] | Wc]; disable_prefix_opt(Wc) -> Wc. do_wildcard_1(Dir, Wcf0) -> do_wildcard_2(Dir, Wcf0), Wcf = fun(Wc0) -> Wc = Dir ++ "/" ++ Wc0, L = Wcf0(Wc), [subtract_dir(N, Dir) || N <- L] end, do_wildcard_2(Dir, Wcf). subtract_dir([C|Cs], [C|Dir]) -> subtract_dir(Cs, Dir); subtract_dir("/"++Cs, []) -> Cs. do_wildcard_2(Dir, Wcf) -> %% Basic wildcards. All = ["abc","abcdef","glurf"], Files = mkfiles(lists:reverse(All), Dir), All = Wcf("*"), ["abc","abcdef"] = Wcf("a*"), ["abc","abcdef"] = Wcf("abc*"), ["abcdef"] = Wcf("abc???"), ["abcdef"] = Wcf("abcd*"), ["abcdef"] = Wcf("*def"), ["abcdef","glurf"] = Wcf("{*def,gl*}"), ["abc","abcdef"] = Wcf("a*{def,}"), ["abc","abcdef"] = Wcf("a*{,def}"), %% Constant wildcard. ["abcdef"] = Wcf("abcdef"), %% Negative tests. [] = Wcf("b*"), [] = Wcf("bufflig"), del(Files), do_wildcard_3(Dir, Wcf). do_wildcard_3(Dir, Wcf) -> %% Some character sets. All = ["a01","a02","a03","b00","c02","d19"], Files = mkfiles(lists:reverse(All), Dir), All = Wcf("[a-z]*"), All = Wcf("[a-d]*"), All = Wcf("[adbc]*"), All = Wcf("?[0-9][0-9]"), All = Wcf("?[0-1][0-39]"), All = Wcf("[abcdefgh][10][01239]"), ["a01","a02","a03","b00","c02"] = Wcf("[a-z]0[0-3]"), [] = Wcf("?[a-z][0-39]"), del(Files), do_wildcard_4(Dir, Wcf). do_wildcard_4(Dir, Wcf) -> %% More character sets: tricky characters. All = ["a-","aA","aB","aC","a[","a]"], Files = mkfiles(lists:reverse(All), Dir), All = Wcf("a[][A-C-]"), ["a-"] = Wcf("a[-]"), ["a["] = Wcf("a["), del(Files), do_wildcard_5(Dir, Wcf). do_wildcard_5(Dir, Wcf) -> Dirs = ["xa","blurf","yyy"], foreach(fun(D) -> ok = file:make_dir(filename:join(Dir, D)) end, Dirs), All = ["blurf/nisse","xa/arne","xa/kalle","yyy/arne"], Files = mkfiles(lists:reverse(All), Dir), %% Test. All = Wcf("*/*"), ["blurf/nisse","xa/arne","xa/kalle"] = Wcf("{blurf,xa}/*"), ["xa/arne","yyy/arne"] = Wcf("*/arne"), ["blurf/nisse"] = Wcf("*/nisse"), [] = Wcf("mountain/*"), [] = Wcf("xa/gurka"), ["blurf/nisse"] = Wcf("blurf/nisse"), %% Cleanup del(Files), foreach(fun(D) -> ok = file:del_dir(filename:join(Dir, D)) end, Dirs), do_wildcard_6(Dir, Wcf). do_wildcard_6(Dir, Wcf) -> ok = file:make_dir(filename:join(Dir, "xbin")), All = ["xbin/a.x","xbin/b.x","xbin/c.x"], Files = mkfiles(All, Dir), All = Wcf("xbin/*.x"), All = Wcf("xbin/*"), ["xbin"] = Wcf("*"), All = Wcf("*/*"), del(Files), ok = file:del_dir(filename:join(Dir, "xbin")), do_wildcard_7(Dir, Wcf). do_wildcard_7(Dir, Wcf) -> Dirs = ["blurf","xa","yyy"], SubDirs = ["blurf/nisse"], foreach(fun(D) -> ok = file:make_dir(filename:join(Dir, D)) end, Dirs ++ SubDirs), All = ["blurf/nisse/baz","xa/arne","xa/kalle","yyy/arne"], Files = mkfiles(lists:reverse(All), Dir), %% Test. Listing = Wcf("**"), ["blurf","blurf/nisse","blurf/nisse/baz", "xa","xa/arne","xa/kalle","yyy","yyy/arne"] = Listing, Listing = Wcf("**/*"), ["xa/arne","yyy/arne"] = Wcf("**/arne"), ["blurf/nisse"] = Wcf("**/nisse"), [] = Wcf("mountain/**"), %% Cleanup del(Files), foreach(fun(D) -> ok = file:del_dir(filename:join(Dir, D)) end, SubDirs ++ Dirs), do_wildcard_8(Dir, Wcf). do_wildcard_8(Dir, Wcf) -> Dirs0 = ["blurf"], Dirs1 = ["blurf/nisse"], Dirs2 = ["blurf/nisse/a", "blurf/nisse/b"], foreach(fun(D) -> ok = file:make_dir(filename:join(Dir, D)) end, Dirs0 ++ Dirs1 ++ Dirs2), All = ["blurf/nisse/a/1.txt", "blurf/nisse/b/2.txt", "blurf/nisse/b/3.txt"], Files = mkfiles(lists:reverse(All), Dir), %% Test. All = Wcf("**/blurf/**/*.txt"), %% Cleanup del(Files), foreach(fun(D) -> ok = file:del_dir(filename:join(Dir, D)) end, Dirs2 ++ Dirs1 ++ Dirs0), do_wildcard_9(Dir, Wcf). do_wildcard_9(Dir, Wcf) -> Dirs0 = ["lib","lib/app","lib/app/ebin"], Dirs = [filename:join(Dir, D) || D <- Dirs0], [ok = file:make_dir(D) || D <- Dirs], Files0 = [filename:join("lib/app/ebin", F++".bar") || F <- ["abc","foo","foobar"]], Files = [filename:join(Dir, F) || F <- Files0], [ok = file:write_file(F, <<"some content\n">>) || F <- Files], Files0 = Wcf("lib/app/ebin/*.bar"), %% Cleanup. del(Files), [ok = file:del_dir(D) || D <- lists:reverse(Dirs)], do_wildcard_10(Dir, Wcf). %% ERL-451/OTP-14577: Escape characters using \\. do_wildcard_10(Dir, Wcf) -> All0 = ["{abc}","abc","def","---","z--","@a,b","@c"], All = case os:type() of {unix,_} -> %% '?' is allowed in file names on Unix, but %% not on Windows. ["?q"|All0]; _ -> All0 end, Files = mkfiles(lists:reverse(All), Dir), ["{abc}"] = Wcf("\\{a*"), ["{abc}"] = Wcf("\\{abc}"), ["abc","def","z--"] = Wcf("[a-z]*"), ["---","abc","z--"] = Wcf("[a\\-z]*"), ["@a,b","@c"] = Wcf("@{a\\,b,c}"), ["@c"] = Wcf("@{a,b,c}"), case os:type() of {unix,_} -> ["?q"] = Wcf("\\?q"); _ -> [] = Wcf("\\?q") end, del(Files), wildcard_11(Dir, Wcf). %% ERL-ERL-1029/OTP-15987: Fix problems with "@/.." and ".." in general. wildcard_11(Dir, Wcf) -> Dirs0 = ["@","@dir","dir@"], Dirs = [filename:join(Dir, D) || D <- Dirs0], _ = [ok = file:make_dir(D) || D <- Dirs], Files0 = ["@a","b@","x","y","z"], Files = mkfiles(Files0, Dir), ["@","@a","@dir","b@","dir@","x","y","z"] = Wcf("*"), ["@"] = Wcf("@"), ["@","@a","@dir"] = Wcf("@*"), ["@/..","@dir/.."] = Wcf("@*/.."), ["@/../@","@/../@a","@/../@dir", "@dir/../@","@dir/../@a","@dir/../@dir"] = Wcf("@*/../@*"), %% Non-directories followed by "/.." should not match any files. [] = Wcf("@a/.."), [] = Wcf("x/.."), %% Cleanup. del(Files), [ok = file:del_dir(D) || D <- Dirs], ok. fold_files(Config) when is_list(Config) -> Dir = filename:join(proplists:get_value(priv_dir, Config), "fold_files"), ok = file:make_dir(Dir), Dirs = [filename:join(Dir, D) || D <- ["blurf","blurf/blarf"]], foreach(fun(D) -> ok = file:make_dir(D) end, Dirs), All = ["fb.txt","ko.txt", "blurf/nisse.text","blurf/blarf/aaa.txt","blurf/blarf/urfa.txt"], Files = mkfiles(lists:reverse(All), Dir), %% Test. Files0 = filelib:fold_files(Dir, "^", false, fun(H, T) -> [H|T] end, []), same_lists(["fb.txt","ko.txt"], Files0, Dir), Files1 = filelib:fold_files(Dir, "^", true, fun(H, T) -> [H|T] end, []), same_lists(All, Files1, Dir), Files2 = filelib:fold_files(Dir, "[.]text$", true, fun(H, T) -> [H|T] end, []), same_lists(["blurf/nisse.text"], Files2, Dir), Files3 = filelib:fold_files(Dir, "^..[.]", true, fun(H, T) -> [H|T] end, []), same_lists(["fb.txt","ko.txt"], Files3, Dir), Files4 = filelib:fold_files(Dir, "^ko[.]txt$", true, fun(H, T) -> [H|T] end, []), same_lists(["ko.txt"], Files4, Dir), Files4 = filelib:fold_files(Dir, "^ko[.]txt$", false, fun(H, T) -> [H|T] end, []), [] = filelib:fold_files(Dir, "^$", true, fun(H, T) -> [H|T] end, []), %% Cleanup del(Files), foreach(fun(D) -> ok = file:del_dir(D) end, lists:reverse(Dirs)), ok = file:del_dir(Dir). same_lists(Expected0, Actual0, BaseDir) -> Expected = [filename:absname(N, BaseDir) || N <- lists:sort(Expected0)], Actual = lists:sort(Actual0), Expected = Actual. mkfiles([H|T], Dir) -> Name = filename:join(Dir, H), Garbage = [31+rand:uniform(95) || _ <- lists:seq(1, rand:uniform(1024))], file:write_file(Name, Garbage), [Name|mkfiles(T, Dir)]; mkfiles([], _) -> []. del([H|T]) -> ok = file:delete(H), del(T); del([]) -> ok. %% Test that filelib:ensure_dir/1 returns ok or {error,Reason}. otp_5960(Config) when is_list(Config) -> PrivDir = proplists:get_value(priv_dir, Config), Dir = filename:join(PrivDir, "otp_5960_dir"), Name1 = filename:join(Dir, name1), Name2 = filename:join(Dir, name2), ok = filelib:ensure_dir(Name1), % parent is created ok = filelib:ensure_dir(Name1), % repeating it should be OK ok = filelib:ensure_dir(Name2), % parent already exists ok = filelib:ensure_dir(Name2), % repeating it should be OK Name3 = filename:join(Name1, name3), {ok, FileInfo} = file:read_file_info(Dir), case os:type() of {win32,_} -> %% Not possibly to write protect directories on Windows %% (at least not using file:write_file_info/2). ok; _ -> Mode = FileInfo#file_info.mode, NoWriteMode = Mode - 8#00200 - 8#00020 - 8#00002, ok = file:write_file_info(Dir, #file_info{mode=NoWriteMode}), {error, _} = filelib:ensure_dir(Name3), ok = file:write_file_info(Dir, #file_info{mode=Mode}), ok end. ensure_dir_eexist(Config) when is_list(Config) -> PrivDir = proplists:get_value(priv_dir, Config), Dir = filename:join(PrivDir, "ensure_dir_eexist"), Name = filename:join(Dir, "same_name_as_file_and_dir"), ok = filelib:ensure_dir(Name), ok = file:write_file(Name, <<"some string\n">>), %% There already is a file with the name of the directory %% we want to create. NeedFile = filename:join(Name, "file"), NeedFileB = filename:join(Name, <<"file">>), {error, eexist} = filelib:ensure_dir(NeedFile), {error, eexist} = filelib:ensure_dir(NeedFileB), ok. ensure_dir_symlink(Config) when is_list(Config) -> PrivDir = proplists:get_value(priv_dir, Config), Dir = filename:join(PrivDir, "ensure_dir_symlink"), Name = filename:join(Dir, "same_name_as_file_and_dir"), ok = filelib:ensure_dir(Name), ok = file:write_file(Name, <<"some string\n">>), %% With a symlink to the directory. Symlink = filename:join(PrivDir, "ensure_dir_symlink_link"), case file:make_symlink(Dir, Symlink) of {error,enotsup} -> {skip,"Symlinks not supported on this platform"}; {error,eperm} -> {win32,_} = os:type(), {skip,"Windows user not privileged to create symlinks"}; ok -> SymlinkedName = filename:join(Symlink, "same_name_as_file_and_dir"), ok = filelib:ensure_dir(SymlinkedName) end. wildcard_symlink(Config) when is_list(Config) -> PrivDir = proplists:get_value(priv_dir, Config), Dir = filename:join(PrivDir, ?MODULE_STRING++"_wildcard_symlink"), SubDir = filename:join(Dir, "sub"), AFile = filename:join(SubDir, "a_file"), Alias = filename:join(Dir, "symlink"), ok = file:make_dir(Dir), ok = file:make_dir(SubDir), ok = file:write_file(AFile, "not that big\n"), case file:make_symlink(AFile, Alias) of {error, enotsup} -> {skip, "Links not supported on this platform"}; {error, eperm} -> {win32,_} = os:type(), {skip, "Windows user not privileged to create symlinks"}; ok -> ["sub","symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "*"))), ["symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"))), ["sub","symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "*"), erl_prim_loader)), ["symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"), erl_prim_loader)), ["sub","symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "*"), ?PRIM_FILE)), ["symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"), ?PRIM_FILE)), ok = file:delete(AFile), %% The symlink should still be visible even when its target %% has been deleted. ["sub","symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "*"))), ["symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"))), ["sub","symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "*"), erl_prim_loader)), ["symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"), erl_prim_loader)), ["sub","symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "*"), ?PRIM_FILE)), ["symlink"] = basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"), ?PRIM_FILE)), ok end. basenames(Dir, Files) -> [begin Dir = filename:dirname(F), filename:basename(F) end || F <- Files]. is_file_symlink(Config) -> PrivDir = proplists:get_value(priv_dir, Config), Dir = filename:join(PrivDir, ?MODULE_STRING++"_is_file_symlink"), SubDir = filename:join(Dir, "sub"), AFile = filename:join(SubDir, "a_file"), DirAlias = filename:join(Dir, "dir_symlink"), FileAlias = filename:join(Dir, "file_symlink"), ok = file:make_dir(Dir), ok = file:make_dir(SubDir), ok = file:write_file(AFile, "not that big\n"), case file:make_symlink(SubDir, DirAlias) of {error, enotsup} -> {skip, "Links not supported on this platform"}; {error, eperm} -> {win32,_} = os:type(), {skip, "Windows user not privileged to create symlinks"}; ok -> true = filelib:is_dir(DirAlias), true = filelib:is_dir(DirAlias, erl_prim_loader), true = filelib:is_dir(DirAlias, ?PRIM_FILE), true = filelib:is_file(DirAlias), true = filelib:is_file(DirAlias, erl_prim_loader), true = filelib:is_file(DirAlias, ?PRIM_FILE), ok = file:make_symlink(AFile,FileAlias), true = filelib:is_file(FileAlias), true = filelib:is_file(FileAlias, erl_prim_loader), true = filelib:is_file(FileAlias, ?PRIM_FILE), true = filelib:is_regular(FileAlias), true = filelib:is_regular(FileAlias, erl_prim_loader), true = filelib:is_regular(FileAlias, ?PRIM_FILE), ok end. file_props_symlink(Config) -> PrivDir = proplists:get_value(priv_dir, Config), Dir = filename:join(PrivDir, ?MODULE_STRING++"_file_props_symlink"), AFile = filename:join(Dir, "a_file"), Alias = filename:join(Dir, "symlink"), ok = file:make_dir(Dir), ok = file:write_file(AFile, "not that big\n"), case file:make_symlink(AFile, Alias) of {error, enotsup} -> {skip, "Links not supported on this platform"}; {error, eperm} -> {win32,_} = os:type(), {skip, "Windows user not privileged to create symlinks"}; ok -> {_,_} = LastMod = filelib:last_modified(AFile), LastMod = filelib:last_modified(Alias), LastMod = filelib:last_modified(Alias, erl_prim_loader), LastMod = filelib:last_modified(Alias, ?PRIM_FILE), FileSize = filelib:file_size(AFile), FileSize = filelib:file_size(Alias), FileSize = filelib:file_size(Alias, erl_prim_loader), FileSize = filelib:file_size(Alias, ?PRIM_FILE) end. find_source(Config) when is_list(Config) -> %% filename:find_{file,source}() does not work if the files are %% cover-compiled. To make sure that the test does not fail %% when the STDLIB is cover-compiled, search for modules in %% the compiler application. BeamFile = code:which(compile), BeamName = filename:basename(BeamFile), BeamDir = filename:dirname(BeamFile), SrcName = filename:basename(BeamFile, ".beam") ++ ".erl", {ok, BeamFile} = filelib:find_file(BeamName, BeamDir), {ok, BeamFile} = filelib:find_file(BeamName, BeamDir, []), {ok, BeamFile} = filelib:find_file(BeamName, BeamDir, [{"",""},{"ebin","src"}]), {error, not_found} = filelib:find_file(BeamName, BeamDir, [{"ebin","src"}]), {ok, SrcFile} = filelib:find_file(SrcName, BeamDir), {ok, SrcFile} = filelib:find_file(SrcName, BeamDir, []), {ok, SrcFile} = filelib:find_file(SrcName, BeamDir, [{"foo","bar"},{"ebin","src"}]), {error, not_found} = filelib:find_file(SrcName, BeamDir, [{"",""}]), {ok, SrcFile} = filelib:find_source(BeamFile), {ok, SrcFile} = filelib:find_source(BeamName, BeamDir), {ok, SrcFile} = filelib:find_source(BeamName, BeamDir, [{".erl",".yrl",[{"",""}]}, {".beam",".erl",[{"ebin","src"}]}]), {error, not_found} = filelib:find_source(BeamName, BeamDir, [{".erl",".yrl",[{"",""}]}]), {ok, ParserErl} = filelib:find_source(code:which(core_parse)), ParserErlName = filename:basename(ParserErl), ParserErlDir = filename:dirname(ParserErl), {ok, ParserYrl} = filelib:find_source(ParserErl), "lry." ++ _ = lists:reverse(ParserYrl), {ok, ParserYrl} = filelib:find_source(ParserErlName, ParserErlDir, [{".beam",".erl",[{"ebin","src"}]}, {".erl",".yrl",[{"",""}]}]), %% find_source automatically checks the local directory regardless of rules {ok, ParserYrl} = filelib:find_source(ParserErl), {ok, ParserYrl} = filelib:find_source(ParserErlName, ParserErlDir, [{".erl",".yrl",[{"ebin","src"}]}]), %% find_file does not check the local directory unless in the rules ParserYrlName = filename:basename(ParserYrl), ParserYrlDir = filename:dirname(ParserYrl), {ok, ParserYrl} = filelib:find_file(ParserYrlName, ParserYrlDir, [{"",""}]), {error, not_found} = filelib:find_file(ParserYrlName, ParserYrlDir, [{"ebin","src"}]), %% local directory is in the default list for find_file {ok, ParserYrl} = filelib:find_file(ParserYrlName, ParserYrlDir), {ok, ParserYrl} = filelib:find_file(ParserYrlName, ParserYrlDir, []), ok. find_source_subdir(Config) when is_list(Config) -> BeamFile = code:which(inets), % Located in lib/inets/src/inets_app/ BeamName = filename:basename(BeamFile), BeamDir = filename:dirname(BeamFile), SrcName = filename:basename(BeamFile, ".beam") ++ ".erl", {ok, SrcFile} = filelib:find_source(BeamName, BeamDir), SrcName = filename:basename(SrcFile), {error, not_found} = filelib:find_source(BeamName, BeamDir, [{".beam",".erl",[{"ebin","src"}]}]), {ok, SrcFile} = filelib:find_source(BeamName, BeamDir, [{".beam",".erl", [{"ebin",filename:join("src", "*")}]}]), {ok, SrcFile} = filelib:find_file(SrcName, BeamDir), ok.