Packages
otpbp
7.3.0
7.18.0
7.16.1
7.15.0
7.14.0
7.13.0
7.12.0
7.11.0
7.10.2
7.9.3
7.9.2
7.9.1
7.8.7
7.8.6
7.8.5
7.8.4
7.7.1
7.7.0
7.6.3
7.6.2
7.6.1
7.6.0
7.5.1
7.5.0
7.4.0
7.3.4
7.3.3
7.3.2
7.3.1
7.3.0
7.2.0
7.1.1
7.1.0
7.0.4
7.0.3
7.0.2
7.0.1
6.26.0
6.25.0
6.24.0
6.23.0
6.22.2
6.21.3
6.21.2
6.21.1
6.20.2
6.19.1
6.19.0
6.18.3
6.18.2
6.18.1
6.18.0
6.17.1
6.17.0
6.16.0
6.15.4
6.15.3
6.15.2
6.15.1
6.15.0
6.14.0
6.13.5
6.13.4
6.13.3
6.13.2
6.13.1
6.13.0
6.12.0
6.11.2
6.11.1
6.10.0
6.9.2
6.9.1
6.9.0
6.8.0
6.7.1
6.7.0
6.6.4
6.6.3
6.6.2
6.6.1
6.6.0
6.5.0
6.4.0
6.3.3
6.3.2
6.3.1
6.3.0
6.2.1
6.2.0
6.1.0
6.0.0
5.39.0
5.38.0
5.37.0
5.36.0
5.35.2
5.34.3
5.34.2
5.34.1
5.33.1
5.32.1
5.32.0
5.31.3
5.31.2
5.31.1
5.31.0
5.30.1
5.30.0
5.29.0
5.28.4
5.28.3
5.28.2
5.28.1
5.28.0
5.27.0
5.26.5
5.26.4
5.26.3
5.26.2
5.26.1
5.26.0
5.25.0
5.24.2
5.24.1
5.23.0
5.22.2
5.22.1
5.22.0
5.21.0
5.20.1
5.20.0
5.19.4
5.19.3
5.19.2
5.19.1
5.19.0
5.18.0
5.17.0
5.16.3
5.16.1
5.16.0
5.15.1
5.15.0
5.14.0
5.13.1
5.13.0
5.12.1
5.12.0
5.11.2
5.11.1
5.10.1
5.10.0
5.9.0
5.8.0
5.7.0
5.6.1
5.6.0
5.5.0
5.4.2
5.4.1
5.4.0
5.3.0
5.2.2
5.2.1
5.2.0
5.1.2
5.1.1
4.79.0
4.78.0
4.77.0
4.76.2
4.75.3
4.75.2
4.75.1
4.74.0
4.73.1
4.73.0
4.72.3
4.72.2
4.72.1
4.72.0
4.71.1
4.71.0
4.70.0
4.69.4
4.69.3
4.69.2
4.69.1
4.69.0
4.68.0
4.67.5
4.67.4
4.67.3
4.67.2
4.67.0
4.66.0
4.65.2
4.65.1
4.64.0
4.63.2
4.63.1
4.63.0
4.62.0
4.61.1
4.61.0
4.60.4
4.60.3
4.60.2
4.60.1
4.60.0
4.59.0
4.58.0
4.57.2
4.57.1
4.57.0
4.56.2
4.56.1
4.56.0
4.55.0
4.54.0
4.53.0
4.52.1
4.52.0
4.51.3
4.51.2
4.51.0
4.50.0
4.49.3
4.49.2
OTP backports
Current section
Files
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Files
src/otpbp_filelib.erl
-module(otpbp_filelib).
-ifndef(HAVE_filelib__safe_relative_path_2).
% OTP 23.0
-export([safe_relative_path/2]).
-endif.
-ifndef(HAVE_filelib__ensure_path_1).
% OTP 25.0
-export([ensure_path/1]).
-endif.
-ifndef(HAVE_filelib__safe_relative_path_2).
safe_relative_path(Path, "") -> safe_relative_path(Path, ".");
safe_relative_path(Path, Cwd) -> srp_path(filename:split(Path), Cwd, sets:new(), []).
srp_path([], _Cwd, _Seen, []) -> "";
srp_path([], _Cwd, _Seen, Acc) -> filename:join(Acc);
srp_path([H|Segs], Cwd, Seen, Acc) when H =:= "."; H =:= <<".">> -> srp_path(Segs, Cwd, Seen, Acc);
srp_path([H|_Segs], _Cwd, _Seen, []) when H =:= ".."; H =:= <<"..">> -> unsafe;
srp_path([H|Segs], Cwd, Seen, [_|_] = Acc) when H =:= ".."; H =:= <<"..">> ->
srp_path(Segs, Cwd, Seen, lists:droplast(Acc));
srp_path([clear|Segs], Cwd, _Seen, Acc) -> srp_path(Segs, Cwd, sets:new(), Acc);
srp_path([Seg|_] = Segs, Cwd, Seen, Acc) ->
case filename:pathtype(Seg) of
relative -> srp_segment(Segs, Cwd, Seen, Acc);
_ -> unsafe
end.
srp_segment([Seg|Segs], Cwd, Seen, Acc) ->
Path = filename:join([Cwd|Acc]),
case file:read_link(filename:join(Path, Seg)) of
{ok, LinkPath} -> srp_link(Path, LinkPath, Segs, Cwd, Seen, Acc);
{error, _} -> srp_path(Segs, Cwd, Seen, Acc ++ [Seg])
end.
srp_link(Path, LinkPath, Segs, Cwd, Seen, Acc) ->
FullLinkPath = filename:join(Path, LinkPath),
case sets:is_element(FullLinkPath, Seen) of
true -> unsafe;
false -> srp_path(filename:split(LinkPath) ++ [clear|Segs], Cwd, sets:add_element(FullLinkPath, Seen), Acc)
end.
-compile({inline, [srp_segment/4, srp_link/6]}).
-endif.
-ifndef(HAVE_filelib__ensure_path_1).
ensure_path("/") -> ok;
ensure_path(Path) ->
case filelib:is_dir(Path) of
true -> ok;
false ->
case filename:dirname(Path) of
Path -> {error, einval};
Parent ->
_ = ensure_path(Parent),
case file:make_dir(Path) of
{error, eexist} ->
case filelib:is_dir(Path) of
true -> ok;
false -> {error, eexist}
end;
Other -> Other
end
end
end.
-endif.