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https://issues.apache.org/jira/browse/XALANJ-2617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17811567#comment-17811567
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Cédric Damioli commented on XALANJ-2617:
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[~kesh...@alum.mit.edu] I think you may also mark this one resolved as
duplicate of XALANJ-2419 ?
> Serializer produces separately escaped surrogate pair instead of codepoint
> --------------------------------------------------------------------------
>
> Key: XALANJ-2617
> URL: https://issues.apache.org/jira/browse/XALANJ-2617
> Project: XalanJ2
> Issue Type: Bug
> Security Level: No security risk; visible to anyone(Ordinary problems in
> Xalan projects. Anybody can view the issue.)
> Components: Serialization, Xalan
> Affects Versions: 2.7.1, 2.7.2
> Reporter: Daniel Kec
> Assignee: Steven J. Hathaway
> Priority: Major
> Attachments: JI9053942.java,
> XALANJ-2617_Fix_missing_surrogate_pairs_support.patch,
> XALANJ-2617_java.patch, XALANJ-2617_test.patch
>
>
> When trying to serialize XML with char consisting of unicode surogate char
> "\uD840\uDC0B" I have tried several and non worked. XML Transformer creates
> XML string with escaped surogate pair separately, which makes XML
> unparseable. eg.: SAXParseException; Character reference "�" is an
> invalid XML character. It looks like a bug introduced in the XALANJ-2271 fix.
>
> {code:java|title=Output of Xalan ver. 2.7.2}
> kec@phoebe:~/Downloads$ java -version
> java version "1.8.0_171"
> Java(TM) SE Runtime Environment (build 1.8.0_171-b11)
> Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode)
> kec@phoebe:~/Downloads$ java -cp
> /home/kec/.m2/repository/xml-apis/xml-apis/1.4.01/xml-apis-1.4.01.jar:/home/kec/.m2/repository/xalan/xalan/2.7.2/xalan-2.7.2.jar:/home/kec/.m2/repository/xalan/serializer/2.7.2/serializer-2.7.2.jar:.
> JI9053942
> Character: 𠀋
> EXPECTED: <?xml version="1.0" encoding="UTF-8"?><a>𠀋</a>
> ACTUAL: <?xml version="1.0" encoding="UTF-8"?><a>��</a>
> [Fatal Error] :1:50: Character reference "&#
> {code}
> {code:java|title=But Xalan ver. 2.7.0 works OK}
> kec@phoebe:~/Downloads$ java -cp
> /home/kec/.m2/repository/xml-apis/xml-apis/1.4.01/xml-apis-1.4.01.jar:/home/kec/.m2/repository/xalan/xalan/2.7.0/xalan-2.7.0.jar:/home/kec/.m2/repository/xalan/serializer/2.7.0/serializer-2.7.0.jar:.
> JI9053942
> Character: 𠀋
> EXPECTED: <?xml version="1.0" encoding="UTF-8"?><a>𠀋</a>
> ACTUAL: <?xml version="1.0" encoding="UTF-8"?><a>𠀋</a>
> ACTUAL PARSED CHAR 𠀋
> {code}
> {code:java|title=Test}
> String value = "\uD840\uDC0B";
> System.out.println("Character: " + value);
> System.out.println("EXPECTED: <?xml version=\"1.0\"
> encoding=\"UTF-8\"?><a>&#" + value.codePointAt(0) + ";</a>");
> StringWriter writer = new StringWriter();
> final DocumentBuilder documentBuilder =
> DocumentBuilderFactory.newInstance().newDocumentBuilder();
> Document dom = documentBuilder.newDocument();
> final Element rootEl = dom.createElement("a");
> rootEl.setTextContent(value);
> dom.appendChild(rootEl);
> Transformer transformer = TransformerFactory.newInstance().newTransformer();
> transformer.transform(new DOMSource(dom), new
> javax.xml.transform.stream.StreamResult(writer));
> String xml = writer.toString();
> System.out.println(" ACTUAL: " + xml);
> InputSource inputSource = new InputSource();
> inputSource.setCharacterStream(new StringReader(xml));
> System.out.println("ACTUAL PARSED CHAR " +
> documentBuilder.parse(inputSource).getDocumentElement().getTextContent());
> {code}
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