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From "Tim Ellison (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-173) java.nio.charset.CharsetEncoder.encode method does not reserve remaining bytes for next invocation.
Date Wed, 29 Mar 2006 12:33:19 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-173?page=all ]

Tim Ellison reassigned HARMONY-173:
-----------------------------------

    Assign To: Tim Ellison

> java.nio.charset.CharsetEncoder.encode method does not reserve remaining bytes for next
invocation.
> ---------------------------------------------------------------------------------------------------
>
>          Key: HARMONY-173
>          URL: http://issues.apache.org/jira/browse/HARMONY-173
>      Project: Harmony
>         Type: Bug
>   Components: Classlib
>     Reporter: Richard Liang
>     Assignee: Tim Ellison
>  Attachments: CharsetEncoderTest_patch_173.txt, CharsetEncoder_patch_173.txt
>
> Method 
> public final CoderResult encode(CharBuffer in,
>                                 ByteBuffer out,
>                                 boolean endOfInput)
> Considering that there is a supplemental character which represents by 4 bytes like "\ud800\udc00",
and it was divided into two input buffers. e.g. "\ud800" is at the end of input1 and the "\udc00"
is at the begining of input2. when invoking the method encode(input1,out,false), it deals
with "\ud800" as a malformed charactor and I think it should be reversed for next invocation
like encode(input2,out,true).
> And it aslo must be handled correspondingly in method public final ByteBuffer encode(CharBuffer
in).
> ===Test segment to reproduce the bug (fail on RI 5.0 and Harmony. I think it's also a
bug for RI 5.0)
> 		CharsetEncoder encoder = Charset.forName("utf-8").newEncoder();
> 		CharBuffer in1 = CharBuffer.wrap("\ud800");
> 		CharBuffer in2 = CharBuffer.wrap("\udc00");
> 		ByteBuffer out = ByteBuffer.allocate(4);
> 		encoder.reset();
> 		CoderResult result = encoder.encode(in1, out, false);
> 		assertEquals(4, out.remaining());
> 		assertTrue(result.isUnderflow());
> 		result = encoder.encode(in2, out, true);
> 		assertEquals(0, out.remaining());
> 		assertTrue(result.isUnderflow());

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