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1
19
20 package org.netbeans.modules.j2ee.dd.impl.common;
21
22 import java.io.IOException  ;
23 import javax.xml.parsers.ParserConfigurationException ;
24 import javax.xml.parsers.SAXParser ;
25 import javax.xml.parsers.SAXParserFactory ;
26 import org.openide.filesystems.FileObject;
27 import org.openide.util.NbBundle;
28 import org.xml.sax.*;
29
30
31
38 public class ParseUtils {
39
40 public static final String EXCEPTION_PREFIX="version:";
42
44 public static String getVersion(java.io.InputStream is, org.xml.sax.helpers.DefaultHandler versionHandler,
45 EntityResolver ddResolver) throws java.io.IOException , SAXException {
46 javax.xml.parsers.SAXParserFactory fact = javax.xml.parsers.SAXParserFactory.newInstance();
47 fact.setValidating(false);
48 try {
49 javax.xml.parsers.SAXParser parser = fact.newSAXParser();
50 XMLReader reader = parser.getXMLReader();
51 reader.setContentHandler(versionHandler);
52 reader.setEntityResolver(ddResolver);
53 try {
54 reader.parse(new InputSource(is));
55 } catch (SAXException ex) {
56 is.close();
57 String message = ex.getMessage();
58 if (message!=null && message.startsWith(EXCEPTION_PREFIX))
59 return message.substring(EXCEPTION_PREFIX.length());
60 else throw new SAXException(NbBundle.getMessage(ParseUtils.class, "MSG_cannotParse"),ex);
61 }
62 is.close();
63 throw new SAXException(NbBundle.getMessage(ParseUtils.class, "MSG_cannotFindRoot"));
64 } catch(javax.xml.parsers.ParserConfigurationException ex) {
65 throw new SAXException(NbBundle.getMessage(ParseUtils.class, "MSG_parserProblem"),ex);
66 }
67 }
68
69
71 public static String getVersion(InputSource is, org.xml.sax.helpers.DefaultHandler versionHandler,
72 EntityResolver ddResolver) throws IOException , SAXException {
73 javax.xml.parsers.SAXParserFactory fact = javax.xml.parsers.SAXParserFactory.newInstance();
74 fact.setValidating(false);
75 try {
76 javax.xml.parsers.SAXParser parser = fact.newSAXParser();
77 XMLReader reader = parser.getXMLReader();
78 reader.setContentHandler(versionHandler);
79 reader.setEntityResolver(ddResolver);
80 try {
81 reader.parse(is);
82 } catch (SAXException ex) {
83 String message = ex.getMessage();
84 if (message!=null && message.startsWith(EXCEPTION_PREFIX))
85 return message.substring(EXCEPTION_PREFIX.length());
86 else throw new SAXException(NbBundle.getMessage(ParseUtils.class, "MSG_cannotParse"),ex);
87 }
88 throw new SAXException(NbBundle.getMessage(ParseUtils.class, "MSG_cannotFindRoot"));
89 } catch(javax.xml.parsers.ParserConfigurationException ex) {
90 throw new SAXException(NbBundle.getMessage(ParseUtils.class, "MSG_parserProblem"),ex);
91 }
92 }
93
94 private static class ErrorHandler implements org.xml.sax.ErrorHandler {
95 private int errorType=-1;
96 SAXParseException error;
97
98 public void warning(org.xml.sax.SAXParseException sAXParseException) throws org.xml.sax.SAXException {
99 if (errorType<0) {
100 errorType=0;
101 error=sAXParseException;
102 }
103 }
105 public void error(org.xml.sax.SAXParseException sAXParseException) throws org.xml.sax.SAXException {
106 if (errorType<1) {
107 errorType=1;
108 error=sAXParseException;
109 }
110 }
112 public void fatalError(org.xml.sax.SAXParseException sAXParseException) throws org.xml.sax.SAXException {
113 errorType=2;
114 throw sAXParseException;
115 }
116
117 public int getErrorType() {
118 return errorType;
119 }
120 public SAXParseException getError() {
121 return error;
122 }
123 }
124
125 public static SAXParseException parseDD(InputSource is, EntityResolver ddResolver)
126 throws org.xml.sax.SAXException , java.io.IOException {
127 ErrorHandler errorHandler = new ErrorHandler();
128 try {
129 SAXParser parser = createSAXParserFactory().newSAXParser();
130 XMLReader reader = parser.getXMLReader();
131 reader.setErrorHandler(errorHandler);
132 reader.setEntityResolver(ddResolver);
133 reader.setFeature("http://apache.org/xml/features/validation/schema", true); reader.setFeature("http://xml.org/sax/features/validation", true); reader.setFeature("http://xml.org/sax/features/namespaces", true); reader.parse(is);
137 SAXParseException error = errorHandler.getError();
138 if (error!=null) return error;
139 } catch (ParserConfigurationException ex) {
140 SAXException sax = new SAXException(ex.getMessage(), ex);
141 sax.initCause(ex);
142 throw sax;
143 } catch (SAXException ex) {
144 throw ex;
145 } catch (IllegalArgumentException ex) {
146 SAXException sax = new SAXException(ex.getMessage(), ex);
148 sax.initCause(ex);
149 throw sax;
150 }
151 return null;
152 }
153
154
156 private static SAXParserFactory createSAXParserFactory() throws ParserConfigurationException {
157 try {
158 SAXParserFactory fact = SAXParserFactory.newInstance();
159 if (fact!=null) {
160 try {
161 fact.getClass().getMethod("getSchema", new Class []{}); return fact;
163 } catch (NoSuchMethodException ex) {}
164 }
165 return (SAXParserFactory ) Class.forName("org.apache.xerces.jaxp.SAXParserFactoryImpl").newInstance(); } catch (Exception ex) {
167 throw new ParserConfigurationException (ex.getMessage());
168 }
169 }
170
171
172 }
173 |
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