netconf/netconf-util/src/test/java/org/opendaylight/netconf/util/test/XmlFileLoader.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.netconf.util.test;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.io.ByteSource;
  13 import java.io.IOException;
  14 import java.io.InputStream;
  15 import java.nio.charset.StandardCharsets;
  16 import javax.xml.parsers.ParserConfigurationException;
  17 import org.opendaylight.netconf.api.NetconfMessage;
  18 import org.opendaylight.netconf.api.xml.XmlUtil;
  19 import org.w3c.dom.Document;
  20 import org.w3c.dom.Element;
  21 import org.xml.sax.SAXException;
  22
  23 public final class XmlFileLoader {
  24     private XmlFileLoader() {
  25
  26     }
  27
  28     public static NetconfMessage xmlFileToNetconfMessage(final String fileName) throws IOException, SAXException,
  29             ParserConfigurationException {
  30         return new NetconfMessage(xmlFileToDocument(fileName));
  31     }
  32
  33     public static Element xmlFileToElement(final String fileName) throws IOException, SAXException,
  34             ParserConfigurationException {
  35         return xmlFileToDocument(fileName).getDocumentElement();
  36     }
  37
  38     public static String xmlFileToString(final String fileName) throws IOException, SAXException,
  39             ParserConfigurationException {
  40         return XmlUtil.toString(xmlFileToDocument(fileName));
  41     }
  42
  43     public static Document xmlFileToDocument(final String fileName) throws IOException, SAXException,
  44             ParserConfigurationException {
  45         try (InputStream resourceAsStream = XmlFileLoader.class.getClassLoader().getResourceAsStream(fileName)) {
  46             requireNonNull(resourceAsStream, fileName);
  47             final Document doc = XmlUtil.readXmlToDocument(resourceAsStream);
  48             return doc;
  49         }
  50     }
  51
  52     public static String fileToString(final String fileName) throws IOException {
  53         try (InputStream resourceAsStream = XmlFileLoader.class.getClassLoader().getResourceAsStream(fileName)) {
  54             requireNonNull(resourceAsStream);
  55             return new ByteSource() {
  56                 @Override
  57                 public InputStream openStream() {
  58                     return resourceAsStream;
  59                 }
  60             }.asCharSource(StandardCharsets.UTF_8).read();
  61
  62         }
  63     }
  64
  65     public static InputStream getResourceAsStream(final String fileName) {
  66         return XmlFileLoader.class.getClassLoader().getResourceAsStream(fileName);
  67     }
  68 }