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1
21
22 package nu.xom.samples;
23
24 import java.io.IOException  ;
25
26 import nu.xom.Builder;
27 import nu.xom.Document;
28 import nu.xom.Element;
29 import nu.xom.Attribute;
30 import nu.xom.Nodes;
31 import nu.xom.NodeFactory;
32 import nu.xom.ParsingException;
33
34
35
46 public class StreamingElementLister extends NodeFactory{
47
48 private int depth = 0;
49 private Nodes empty = new Nodes();
50
51 public static void main(String [] args) {
52
53 if (args.length == 0) {
54 System.out.println(
55 "Usage: java nu.xom.samples.StreamingElementLister URL"
56 );
57 return;
58 }
59
60 Builder builder = new Builder(new StreamingElementLister());
61
62 try {
63 builder.build(args[0]);
64 }
65 catch (ParsingException ex) {
66 System.out.println(args[0] + " is not well-formed.");
67 System.out.println(ex.getMessage());
68 }
69 catch (IOException ex) {
70 System.out.println(ex);
71 }
72
73 }
74
75 public Nodes makeComment(String data) {
77 return empty;
78 }
79
80 public Nodes makeText(String data) {
82 return empty;
83 }
84
85 public Element startMakingElement(String name, String namespace) {
86 depth++;
87 printSpaces();
88 System.out.println(name);
89 return new Element(name, namespace);
90 }
91
92 public Nodes finishMakingElement(Element element) {
93 depth--;
94 if (element.getParent() instanceof Document) {
95 return new Nodes(element);
96 }
97 else return empty;
98 }
99
100 public Nodes makeAttribute(String name, String URI,
101 String value, Attribute.Type type) {
102 return empty;
103 }
104
105 public Nodes makeDocType(String rootElementName,
106 String publicID, String systemID) {
107 return empty;
108 }
109
110 public Nodes makeProcessingInstruction(
111 String target, String data) {
112 return empty;
113 }
114
115 private void printSpaces() {
116 for (int i = 0; i <= depth; i++) {
117 System.out.print(' ');
118 }
119 }
120
121 }
122 |
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