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/*******************************************************************************
* Copyright (c) 2006, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ua.tests.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.junit.Assert;
import org.xml.sax.Attributes;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import org.eclipse.help.internal.entityresolver.LocalEntityResolver;
/**
* A utility class for working with XML.
*/
public class XMLUtil extends Assert {
public static void assertXMLEquals(String msg, String s1, String s2) throws Exception {
InputStream in1 = new ByteArrayInputStream(s1.getBytes("UTF-8"));
InputStream in2 = new ByteArrayInputStream(s2.getBytes("UTF-8"));
assertXMLEquals(msg, in1, in2);
}
public static void assertXMLEquals(String msg, InputStream in1, InputStream in2) throws Exception {
String s1 = process(in1);
String s2 = process(in2);
assertEquals(msg, s1, s2);
}
public static void assertParseableXML(String s) {
try {
InputStream in1 = new ByteArrayInputStream(s.getBytes("UTF-8"));
process(in1);
} catch (Exception e) {
fail("Unable to parse source: " + s);
}
}
private static String process(InputStream in) throws Exception {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
Handler handler = new Handler();
parser.parse(in, handler);
return handler.toString();
}
private static class Handler extends DefaultHandler {
private StringBuffer buf = new StringBuffer();
private EntityResolver entityResolver = new LocalEntityResolver();
/* (non-Javadoc)
* @see org.xml.sax.helpers.DefaultHandler#startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)
*/
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
buf.append('<');
buf.append(qName);
List<String> list = new ArrayList<String>();
for (int i=0;i<attributes.getLength();++i) {
list.add(attributes.getQName(i));
}
Collections.sort(list);
Iterator<String> iter = list.iterator();
while (iter.hasNext()) {
String name = iter.next();
buf.append(' ');
buf.append(name);
buf.append('=');
buf.append('"');
buf.append(attributes.getValue(name));
buf.append('"');
}
buf.append('>');
}
/* (non-Javadoc)
* @see org.xml.sax.helpers.DefaultHandler#endElement(java.lang.String, java.lang.String, java.lang.String)
*/
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
buf.append('<');
buf.append('/');
buf.append(qName);
buf.append('>');
}
/* (non-Javadoc)
* @see org.xml.sax.helpers.DefaultHandler#characters(char[], int, int)
*/
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
buf.append(ch, start, length);
}
/*
* Note: throws clause does not declare IOException due to a bug in
* sun jdk: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6327149
*
* @see org.xml.sax.helpers.DefaultHandler#resolveEntity(java.lang.String, java.lang.String)
*/
@Override
public InputSource resolveEntity(String publicId, String systemId) throws SAXException {
try {
return entityResolver.resolveEntity(publicId, systemId);
} catch (IOException e) {
return new InputSource(new StringReader("")); //$NON-NLS-1$
}
}
@Override
public String toString() {
return buf.toString();
}
}
}
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