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1
3 package org.jgroups.conf;
4
5
9 import org.jgroups.util.PrintXMLTree;
11 import org.jgroups.util.Util;
12 import org.w3c.dom.Document  ;
13 import org.xml.sax.InputSource ;
14 import org.xml.sax.SAXException ;
15 import org.xml.sax.SAXParseException ;
16
17 import javax.xml.parsers.DocumentBuilder ;
18 import javax.xml.parsers.DocumentBuilderFactory ;
19 import java.io.InputStream ;
20 import java.net.URL ;
21 public class XmlValidator
22 {
23
24 private final String mXmlUrl;
25 private final String mDtdUrl;
26 private final boolean mPrintXml;
27
28 public XmlValidator(String xmlUrl, String dtdUrl)
29 {
30 this(xmlUrl,dtdUrl,true);
31 }
32
33 public XmlValidator(String xmlUrl, String dtdUrl, boolean printXml)
34 {
35 mXmlUrl = xmlUrl;
36 mDtdUrl = dtdUrl;
37 mPrintXml = printXml;
38 }
39
40 protected static InputStream getInputStream(String url)
41 throws java.io.IOException
42 {
43 URL inurl = new URL (url);
44 return inurl.openStream();
45 }
46
47
48 public void validate() throws Exception
49 {
50 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
51 factory.setValidating(true);
53 DocumentBuilder builder = factory.newDocumentBuilder();
54 builder.setEntityResolver(new JGEntityResolver(mDtdUrl));
56 JGErrorHandler errorhandler = new JGErrorHandler();
57 builder.setErrorHandler(errorhandler);
58 Document document = builder.parse( getInputStream( mXmlUrl ));
59 if ( mPrintXml )
60 PrintXMLTree.print(new java.io.PrintWriter (System.out),document.getDocumentElement());
61 System.out.println("\n\nError Report:");
62 System.out.println(errorhandler.getErrorString());
63
64 }
65
66 public static void main(String [] args)
67 throws Exception
68 {
69
70 if ( args.length < 2 )
71 {
72 System.out.println("Usage: XmlValidator xmlUrl dtdUrl [printXml(true|false)]");
73 System.out.println("Example: XmlValidator file:/usr/local/test.xml file:conf/jgroups-protocol.dtd false");
74 System.exit(1);
75 }
76 boolean printXml = true;
77 if ( args.length > 2 )
78 {
79 try
80 {
81 printXml = Boolean.valueOf(args[2]).booleanValue();
82 }
83 catch ( Exception x){ x.printStackTrace();}
84 }
85 XmlValidator xmlValidator = new XmlValidator(args[0],args[1],printXml);
86 xmlValidator.validate();
87 }
88
89 class JGEntityResolver implements org.xml.sax.EntityResolver
90 {
91 private final String mDtdUrl;
92 public JGEntityResolver(String dtdUrl)
93 {
94 mDtdUrl = dtdUrl;
95 }
96 public InputSource resolveEntity(java.lang.String publicId,
97 java.lang.String systemId)
98 throws SAXException ,
99 java.io.IOException
100 {
101
102 InputSource source = new InputSource (getInputStream(mDtdUrl));
103 return source;
104 }
105 }
106
107 class JGErrorHandler implements org.xml.sax.ErrorHandler
108 {
109 private final StringBuffer mErrors = new StringBuffer ();
110 int count = 1;
111 public void warning(SAXParseException exception)
112 throws SAXException
113 {
114 mErrors.append('\n').append(count++).append(". WARNING: ");
115 mErrors.append(Util.getStackTrace(exception));
116 mErrors.append('\n');
117 }
118
119 public void error(SAXParseException exception)
120 throws SAXException
121 {
122 mErrors.append('\n').append(count++).append(". ERROR: ");
123 mErrors.append(Util.getStackTrace(exception));
124 mErrors.append('\n');
125 }
126
127 public void fatalError(SAXParseException exception)
128 throws SAXException
129 {
130 mErrors.append('\n').append(count++).append(". FATAL ERROR: ");
131 mErrors.append(Util.getStackTrace(exception));
132 mErrors.append('\n');
133 }
134
135 public String getErrorString()
136 {
137 if ( mErrors.length() == 0 ) return "No errors reported."; else return mErrors.toString();
138 }
139
140 }
141 }
142 |
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