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/*******************************************************************************
* Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
* 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:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.report.internal.xml;
import static org.junit.Assert.fail;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/**
* Test utility to parse, validate and query XML documents.
*/
public class XMLSupport {
private final DocumentBuilder builder;
private XPath xpath;
public XMLSupport(Class<?> resourceDelegate)
throws ParserConfigurationException {
final DocumentBuilderFactory builderFactory = DocumentBuilderFactory
.newInstance();
builderFactory.setValidating(true);
builder = builderFactory.newDocumentBuilder();
builder.setEntityResolver(new LocalEntityResolver(resourceDelegate));
builder.setErrorHandler(new ErrorHandler() {
public void error(SAXParseException exception) throws SAXException {
fail(exception.getMessage());
}
public void fatalError(SAXParseException exception)
throws SAXException {
fail(exception.getMessage());
}
public void warning(SAXParseException exception)
throws SAXException {
fail(exception.getMessage());
}
});
}
private XPath getXPath() {
if (xpath == null) {
xpath = XPathFactory.newInstance().newXPath();
}
return xpath;
}
public Document parse(ByteArrayOutputStream buffer)
throws SAXException, IOException, ParserConfigurationException {
return parse(buffer.toByteArray());
}
public Document parse(byte[] document)
throws SAXException, IOException, ParserConfigurationException {
return builder
.parse(new InputSource(new ByteArrayInputStream(document)));
}
public String findStr(final Document doc, final String query)
throws XPathExpressionException {
return (String) getXPath().evaluate(query, doc, XPathConstants.STRING);
}
}
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