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1
5
6 package org.exoplatform.services.jcr.impl.util;
7
8 import java.util.Map  ;
9 import java.util.Iterator ;
10 import java.util.Stack ;
11 import java.util.Properties ;
12 import java.util.HashMap ;
13
14
20
21 public class XMLWriter {
22
23 private boolean nsWritten;
24 private Map namespaces;
25 private StringBuffer buffer;
26 private Stack nodes;
27
28 public XMLWriter(Map namespaces) {
29 this.buffer = new StringBuffer ();
30 this.namespaces = namespaces;
31 this.nodes = new Stack ();
32 this.nsWritten = false;
33 }
34
35 public XMLWriter() {
36 this(new HashMap ());
37 }
38
39 public void startElement(String qname, Properties attrs) {
40 Iterator keys;
41 buffer.append("<" + qname);
42 if (!nsWritten) {
43 keys = namespaces.keySet().iterator();
44 while (keys.hasNext()) {
45 String key = (String ) keys.next();
46 String value = (String ) namespaces.get(key);
47 writeAttribute("xmlns:" + key, value);
48 }
49 nsWritten = true;
50 }
51 if (attrs != null) {
52 keys = attrs.keySet().iterator();
53 while (keys.hasNext()) {
54 String key = (String ) keys.next();
55 String value = (String ) attrs.get(key);
56 writeAttribute(key, value);
57 }
58 }
59 if (!nodes.empty()) {
60 ((Context) nodes.peek()).isOpen = false;
61 }
62 nodes.push(new Context(qname));
63 buffer.append(">");
64 }
65
66 public void endElement() {
67 Context curNode;
68 if (!nodes.empty())
69 curNode = (Context) nodes.pop();
70 else
71 throw new RuntimeException ("Unexpected Empty Stack at End element !!");
72
73 buffer.append("</" + curNode.nodeName + ">");
78 }
79
80 private void writeAttribute(String qname, String value) {
81 buffer.append(" " + qname + "=\"" + value + "\"");
82 }
83
84 public void writeText(String text) {
85 if (!nodes.empty()) {
86 if (text.length() > 0)
87 ((Context) nodes.peek()).isOpen = false;
88 } else
89 throw new RuntimeException ("Unexpected Empty Stack at Text '" + text + "' !!!");
90 buffer.append(text);
91 }
92
93 public byte[] getBytes() {
94 return buffer.toString().getBytes();
95 }
96
97 public String toString() {
98 return buffer.toString();
99 }
100
101 private class Context {
102 private Context(String nodeName) {
103 this.nodeName = nodeName;
104 this.isOpen = true;
105 }
106
107 private String nodeName;
108 private boolean isOpen;
109 }
110 }
111 |
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