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1 package com.thaiopensource.xml.sax;
2
3 import com.thaiopensource.util.Uri;
4 import org.xml.sax.Locator  ;
5
6 public class XmlBaseHandler {
7 private int depth = 0;
8 private Locator loc;
9 private Entry stack = null;
10
11 private static class Entry {
12 private Entry parent;
13 private String attValue;
14 private String systemId;
15 private int depth;
16 }
17
18 public void setLocator(Locator loc) {
19 this.loc = loc;
20 }
21
22 public void startElement() {
23 ++depth;
24 }
25
26 public void endElement() {
27 if (stack != null && stack.depth == depth)
28 stack = stack.parent;
29 --depth;
30 }
31
32 public void xmlBaseAttribute(String value) {
33 Entry entry = new Entry();
34 entry.parent = stack;
35 stack = entry;
36 entry.attValue = Uri.escapeDisallowedChars(value);
37 entry.systemId = getSystemId();
38 entry.depth = depth;
39 }
40
41 private String getSystemId() {
42 return loc == null ? null : loc.getSystemId();
43 }
44
45 public String getBaseUri() {
46 return getBaseUri1(getSystemId(), stack);
47 }
48
49 private static String getBaseUri1(String baseUri, Entry stack) {
50 if (stack == null
51 || (baseUri != null && !baseUri.equals(stack.systemId)))
52 return baseUri;
53 baseUri = stack.attValue;
54 if (Uri.isAbsolute(baseUri))
55 return baseUri;
56 return Uri.resolve(getBaseUri1(stack.systemId, stack.parent), baseUri);
57 }
58 }
59 |
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