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* transcode.c (econv_putback): associate encoding to the result.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18986 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2008-08-31 07:59:03 +00:00
parent ca6a8b1e2c
commit 2d71485ec1
3 changed files with 34 additions and 2 deletions
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4
ChangeLog
View file

@ -1,3 +1,7 @@
Sun Aug 31 16:57:36 2008 Tanaka Akira <akr@fsij.org>
* transcode.c (econv_putback): associate encoding to the result.
Sun Aug 31 16:43:56 2008 Koichi Sasada <ko1@atdot.net>
* include/ruby/intern.h: rename RB_UBF_DFL to

4
test/ruby/test_econv.rb
View file

@ -498,8 +498,8 @@ class TestEncodingConverter < Test::Unit::TestCase
ec = Encoding::Converter.new("utf-16le", "euc-jp")
ret = ec.primitive_convert(src="\x00\xd8\x21\x00", dst="", nil, nil)
assert_equal(:invalid_byte_sequence, ret)
assert_equal("\x00", ec.putback(1))
assert_equal("\x21", ec.putback(1))
assert_equal("\x00".force_encoding("utf-16le"), ec.putback(1))
assert_equal("\x21".force_encoding("utf-16le"), ec.putback(1))
assert_equal("", ec.putback(1))
end

28
transcode.c
View file

@ -2751,6 +2751,30 @@ econv_insert_output(VALUE self, VALUE string)
return Qnil;
}
/*
* call-seq
* putback => string
* putback(max_numbytes) => string
*
* put back the bytes which will be converted.
*
* The bytes are caused by invalid_byte_sequence error.
* When invalid_byte_sequence error, some bytes are discarded and
* some bytes may be converted again.
* The latter bytes can be put back.
* It can be observed by
* Encoding::InvalidByteSequence#readagain_bytes and
* Encoding::Converter#primitive_errinfo.
*
* ec = Encoding::Converter.new("utf-16le", "iso-8859-1")
* src = "\x00\xd8\x61\x00"
* dst = ""
* p ec.primitive_convert(src, dst) #=> :invalid_byte_sequence
* p ec.primitive_errinfo #=> [:invalid_byte_sequence, "UTF-16LE", "UTF-8", "\x00\xD8", "a\x00"]
* p ec.putback #=> "a\x00"
* p ec.putback #=> "" # no more bytes to put back
*
*/
static VALUE
econv_putback(int argc, VALUE *argv, VALUE self)
{
@ -2773,6 +2797,10 @@ econv_putback(int argc, VALUE *argv, VALUE self)
str = rb_str_new(NULL, n);
rb_econv_putback(ec, (unsigned char *)RSTRING_PTR(str), n);
if (ec->source_encoding) {
rb_enc_associate(str, ec->source_encoding);
}
return str;
}