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1 package com.thaiopensource.relaxng.parse.sax;
2
3 import com.thaiopensource.relaxng.parse.SubParser;
4 import com.thaiopensource.relaxng.parse.ParsedPattern;
5 import com.thaiopensource.relaxng.parse.SchemaBuilder;
6 import com.thaiopensource.relaxng.parse.IncludedGrammar;
7 import com.thaiopensource.relaxng.parse.BuildException;
8 import com.thaiopensource.relaxng.parse.IllegalSchemaException;
9 import com.thaiopensource.relaxng.parse.Scope;
10 import com.thaiopensource.xml.sax.XMLReaderCreator;
11 import org.xml.sax.XMLReader  ;
12 import org.xml.sax.SAXException ;
13 import org.xml.sax.InputSource ;
14 import org.xml.sax.EntityResolver ;
15 import org.xml.sax.ErrorHandler ;
16
17 import java.io.IOException ;
18
19 public class SAXSubParser implements SubParser {
20 final XMLReaderCreator xrc;
21 final ErrorHandler eh;
22
23 SAXSubParser(XMLReaderCreator xrc, ErrorHandler eh) {
24 this.xrc = xrc;
25 this.eh = eh;
26 }
27
28 public ParsedPattern parseInclude(String uri, SchemaBuilder schemaBuilder, IncludedGrammar g)
29 throws BuildException, IllegalSchemaException {
30 try {
31 XMLReader xr = xrc.createXMLReader();
32 SchemaParser sp = new SchemaParser(xr, eh, schemaBuilder, g, g);
33 xr.parse(makeInputSource(xr, uri));
34 return sp.getParsedPattern();
35 }
36 catch (SAXException e) {
37 throw SAXParseable.toBuildException(e);
38 }
39 catch (IOException e) {
40 throw new BuildException(e);
41 }
42 }
43
44 public ParsedPattern parseExternal(String uri, SchemaBuilder schemaBuilder, Scope s)
45 throws BuildException, IllegalSchemaException {
46 try {
47 XMLReader xr = xrc.createXMLReader();
48 SchemaParser sp = new SchemaParser(xr, eh, schemaBuilder, null, s);
49 xr.parse(makeInputSource(xr, uri));
50 return sp.getParsedPattern();
51 }
52 catch (SAXException e) {
53 throw SAXParseable.toBuildException(e);
54 }
55 catch (IOException e) {
56 throw new BuildException(e);
57 }
58 }
59
60 private static InputSource makeInputSource(XMLReader xr, String systemId) throws IOException , SAXException {
61 EntityResolver er = xr.getEntityResolver();
62 if (er != null) {
63 InputSource inputSource = er.resolveEntity(null, systemId);
64 if (inputSource != null)
65 return inputSource;
66 }
67 return new InputSource (systemId);
68 }
69
70 static BuildException toBuildException(SAXException e) {
71 Exception inner = e.getException();
72 if (inner instanceof BuildException)
73 throw (BuildException)inner;
74 throw new BuildException(e);
75 }
76 }
77 |
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