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authorRory Byrne <rory@jinsky.com>2010-01-16 14:47:43 +0000
committerBjörn Gustavsson <bjorn@erlang.org>2010-01-27 12:27:35 +0100
commitcf7e585bb45970fe0b5a8a6aa6653cd50583d052 (patch)
tree4ebe87470ab3203029a9a7b5e8830569bbaf32b1 /lib/stdlib
parent1d2a481cfd016f204183b44d8f95798161b423e3 (diff)
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Fix re:replace/4 to handle unicode charlist Replacement argument
A bug in re:replace/4 causes a badarg exception to be thrown when the Replacement argument is a charlist containing non-ascii codepoints. The problem is that the code incorrectly assumes that the Replacement text is iodata() and calls iolist_to_binary/1 on it. This patch fixes it to obey the 'unicode' option and handle charlist() Replacement arguments correctly.
Diffstat (limited to 'lib/stdlib')
-rw-r--r--lib/stdlib/src/re.erl17
-rw-r--r--lib/stdlib/test/re_SUITE.erl1
2 files changed, 15 insertions, 3 deletions
diff --git a/lib/stdlib/src/re.erl b/lib/stdlib/src/re.erl
index f934fdcba1..889d273f6f 100644
--- a/lib/stdlib/src/re.erl
+++ b/lib/stdlib/src/re.erl
@@ -229,7 +229,19 @@ replace(Subject,RE,Replacement,Options) ->
iolist_to_binary(Subject)
end
end,
- case do_replace(FlatSubject,Subject,RE,Replacement,NewOpt) of
+ FlatReplacement =
+ case is_binary(Replacement) of
+ true ->
+ Replacement;
+ false ->
+ case Unicode of
+ true ->
+ unicode:characters_to_binary(Replacement,unicode);
+ false ->
+ iolist_to_binary(Replacement)
+ end
+ end,
+ case do_replace(FlatSubject,Subject,RE,FlatReplacement,NewOpt) of
{error,_Err} ->
throw(badre);
IoList ->
@@ -329,8 +341,7 @@ process_split_params([H|T],C,U,L,S,G) ->
{[H|NT],NC,NU,NL,NS,NG}.
apply_mlist(Subject,Replacement,Mlist) ->
- do_mlist(Subject,Subject,0,precomp_repl(iolist_to_binary(Replacement)),
- Mlist).
+ do_mlist(Subject,Subject,0,precomp_repl(Replacement), Mlist).
precomp_repl(<<>>) ->
diff --git a/lib/stdlib/test/re_SUITE.erl b/lib/stdlib/test/re_SUITE.erl
index f8667bfcee..e0e0670676 100644
--- a/lib/stdlib/test/re_SUITE.erl
+++ b/lib/stdlib/test/re_SUITE.erl
@@ -275,6 +275,7 @@ replace_input_types(Config) when is_list(Config) ->
Dog = ?t:timetrap(?t:minutes(3)),
?line <<"abcd">> = re:replace("abcd","Z","X",[{return,binary},unicode]),
?line <<"abcd">> = re:replace("abcd","\x{400}","X",[{return,binary},unicode]),
+ ?line <<"a",208,128,"cd">> = re:replace(<<"abcd">>,"b","\x{400}",[{return,binary},unicode]),
?t:timetrap_cancel(Dog),
ok.