|
1
11 package org.eclipse.help.internal.dynamic;
12
13 import java.io.ByteArrayOutputStream  ;
14 import java.io.UnsupportedEncodingException ;
15 import java.util.Properties ;
16
17 import javax.xml.transform.OutputKeys ;
18 import javax.xml.transform.Transformer ;
19 import javax.xml.transform.TransformerConfigurationException ;
20 import javax.xml.transform.TransformerException ;
21 import javax.xml.transform.TransformerFactory ;
22 import javax.xml.transform.dom.DOMSource ;
23 import javax.xml.transform.stream.StreamResult ;
24
25 import org.eclipse.help.internal.UAElement;
26 import org.w3c.dom.Document ;
27 import org.w3c.dom.DocumentType ;
28 import org.w3c.dom.Element ;
29
30 public class DocumentWriter {
31
32 private Transformer transformer;
33
34 public String writeString(UAElement element, boolean xmlDecl) throws TransformerException , TransformerConfigurationException {
35 return writeString(element.element, xmlDecl);
36 }
37
38 public String writeString(Element element, boolean xmlDecl) throws TransformerException , TransformerConfigurationException {
39 byte[] bytes = writeBytes(element, xmlDecl);
40 String encoding = transformer.getOutputProperty(OutputKeys.ENCODING);
41 if (encoding == null) {
42 encoding = "UTF-8"; }
44 try {
45 return new String (bytes, encoding);
46 }
47 catch (UnsupportedEncodingException e) {
48 return new String (bytes);
49 }
50 }
51
52 public byte[] writeBytes(UAElement element, boolean xmlDecl) throws TransformerException , TransformerConfigurationException {
53 return writeBytes(element.element, xmlDecl);
54 }
55
56 public byte[] writeBytes(Element element, boolean xmlDecl) throws TransformerException , TransformerConfigurationException {
57 Document document = element.getOwnerDocument();
58 if (transformer == null) {
59 TransformerFactory factory = TransformerFactory.newInstance();
60 transformer = factory.newTransformer();
61 transformer.setOutputProperty(OutputKeys.METHOD, "xml"); }
63 DocumentType docType = document.getDoctype();
64 Properties props = transformer.getOutputProperties();
65 if (docType != null) {
66 props.setProperty(OutputKeys.DOCTYPE_PUBLIC, docType.getPublicId());
67 props.setProperty(OutputKeys.DOCTYPE_SYSTEM, docType.getSystemId());
68 }
69 else {
70 props.remove(OutputKeys.DOCTYPE_PUBLIC);
71 props.remove(OutputKeys.DOCTYPE_SYSTEM);
72 }
73 props.setProperty(OutputKeys.OMIT_XML_DECLARATION, xmlDecl ? "no" : "yes"); transformer.setOutputProperties(props);
75
76 DOMSource source = new DOMSource (element);
77 ByteArrayOutputStream out = new ByteArrayOutputStream ();
78 StreamResult result = new StreamResult (out);
79 transformer.transform(source, result);
80 return out.toByteArray();
81 }
82 }
83 |
Popular Tags |
Java API By Example, From Geeks To Geeks.