--- /dev/null
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. 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
+ */
+
+package org.opendaylight.controller.netconf.util.xml;
+
+import java.io.*;
+
+import javax.xml.XMLConstants;
+import javax.xml.namespace.QName;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.transform.*;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.transform.stream.StreamSource;
+import javax.xml.validation.Schema;
+import javax.xml.validation.SchemaFactory;
+import javax.xml.xpath.XPathExpression;
+import javax.xml.xpath.XPathExpressionException;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.xml.sax.SAXException;
+
+import com.google.common.base.Charsets;
+
+public class XmlUtil {
+
+ public static final String XMLNS_ATTRIBUTE_KEY = "xmlns";
+
+ public static Element readXmlToElement(String xmlContent) throws SAXException, IOException {
+ Document doc = readXmlToDocument(xmlContent);
+ return doc.getDocumentElement();
+ }
+
+ public static Element readXmlToElement(InputStream xmlContent) throws SAXException, IOException {
+ Document doc = readXmlToDocument(xmlContent);
+ return doc.getDocumentElement();
+ }
+
+ public static Document readXmlToDocument(String xmlContent) throws SAXException, IOException {
+ return readXmlToDocument(new ByteArrayInputStream(xmlContent.getBytes(Charsets.UTF_8)));
+ }
+
+ public static Document readXmlToDocument(InputStream xmlContent) throws SAXException, IOException {
+ DocumentBuilderFactory factory = getDocumentBuilderFactory();
+ DocumentBuilder dBuilder;
+ try {
+ dBuilder = factory.newDocumentBuilder();
+ } catch (ParserConfigurationException e) {
+ throw new RuntimeException(e);
+ }
+ Document doc = dBuilder.parse(xmlContent);
+
+ doc.getDocumentElement().normalize();
+ return doc;
+ }
+
+ public static Element readXmlToElement(File xmlFile) throws SAXException, IOException {
+ return readXmlToDocument(new FileInputStream(xmlFile)).getDocumentElement();
+ }
+
+ private static final DocumentBuilderFactory getDocumentBuilderFactory() {
+ DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+ factory.setNamespaceAware(true);
+ factory.setCoalescing(true);
+ // factory.setValidating(true);
+ factory.setIgnoringElementContentWhitespace(true);
+ factory.setIgnoringComments(true);
+ return factory;
+ }
+
+ public static Document newDocument() {
+ DocumentBuilderFactory factory = getDocumentBuilderFactory();
+ try {
+ DocumentBuilder builder = factory.newDocumentBuilder();
+ Document document = builder.newDocument();
+ return document;
+ } catch (ParserConfigurationException e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public static Element createTextElement(Document document, String name, String content) {
+ Element typeElement = document.createElement(name);
+ typeElement.appendChild(document.createTextNode(content));
+ return typeElement;
+ }
+
+ public static void addNamespaceAttr(Element root, String namespace) {
+ root.setAttribute(XMLNS_ATTRIBUTE_KEY, namespace);
+ }
+
+ public static void addPrefixedNamespaceAttr(Element root, String prefix, String namespace) {
+ root.setAttribute(concat(XMLNS_ATTRIBUTE_KEY, prefix), namespace);
+ }
+
+ public static Element createPrefixedTextElement(Document document, String key, String prefix, String moduleName) {
+ return createTextElement(document, key, concat(prefix, moduleName));
+ }
+
+ private static String concat(String prefix, String value) {
+ return prefix + ":" + value;
+ }
+
+ public static String toString(Document document) {
+ return toString(document.getDocumentElement());
+ }
+
+ public static String toString(Element xml) {
+ return toString(xml, false);
+ }
+
+ public static String toString(XmlElement xmlElement) {
+ return toString(xmlElement.getDomElement(), false);
+ }
+
+ public static String toString(Element xml, boolean addXmlDeclaration) {
+ try {
+ Transformer transformer = TransformerFactory.newInstance().newTransformer();
+ transformer.setOutputProperty(OutputKeys.INDENT, "yes");
+ transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, addXmlDeclaration == true ? "no" : "yes");
+
+ StreamResult result = new StreamResult(new StringWriter());
+ DOMSource source = new DOMSource(xml);
+ transformer.transform(source, result);
+
+ String xmlString = result.getWriter().toString();
+ return xmlString;
+ } catch (IllegalArgumentException | TransformerFactoryConfigurationError | TransformerException e) {
+ throw new RuntimeException("Unable to serialize xml element " + xml, e);
+ }
+ }
+
+ public static String toString(Document doc, boolean addXmlDeclaration) {
+ return toString(doc.getDocumentElement(), addXmlDeclaration);
+ }
+
+ public static Schema loadSchema(InputStream... fromStreams) {
+ Source[] sources = new Source[fromStreams.length];
+ int i = 0;
+ for (InputStream stream : fromStreams) {
+ sources[i++] = new StreamSource(stream);
+ }
+
+ final SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
+ try {
+ return schemaFactory.newSchema(sources);
+ } catch (SAXException e) {
+ throw new IllegalStateException("Failed to instantiate XML schema", e);
+ }
+ }
+
+ public static Object evaluateXPath(XPathExpression expr, Object rootNode, QName returnType) {
+ try {
+ return expr.evaluate(rootNode, returnType);
+ } catch (XPathExpressionException e) {
+ throw new IllegalStateException("Error while evaluating xpath expression " + expr, e);
+ }
+ }
+
+ public static Document createDocumentCopy(Document original) {
+ final Document copiedDocument = newDocument();
+ final Node copiedRoot = copiedDocument.importNode(original.getDocumentElement(), true);
+ copiedDocument.appendChild(copiedRoot);
+ return copiedDocument;
+ }
+}
Code Review / controller.git / blobdiff