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1 package org.apache.turbine.services.intake.transform; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache Turbine" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache Turbine", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import java.io.IOException; 58 import java.io.InputStream; 59 import java.net.URL; 60 import org.xml.sax.EntityResolver; 61 import org.xml.sax.InputSource; 62 63 /*** 64 * A resolver to get the database.dtd file for the XML parser from the jar. 65 * This does not work with jdk1.3 on linux and OSX, see 66 * <a href="http://developer.java.sun.com/developer/bugParade/bugs/4337703.html"> 67 * Bug 4337703</a> 68 * 69 * @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a> 70 * @version $Id: DTDResolver.java,v 1.1.1.1 2001/08/16 05:08:57 jvanzyl Exp $ 71 */ 72 public class DTDResolver implements EntityResolver 73 { 74 /*** InputSource for database.dtd */ 75 InputSource databaseDTD = null; 76 77 /*** 78 * constructor 79 */ 80 public DTDResolver() 81 { 82 try 83 { 84 InputStream dtdStream = 85 getClass().getResourceAsStream("intake.dtd"); 86 87 // getResource was buggy on many systems including Linux, 88 // OSX, and some versions of windows in jdk1.3. 89 // getResourceAsStream works on linux, maybe others? 90 if (dtdStream != null) 91 { 92 databaseDTD = new InputSource(dtdStream); 93 } 94 } 95 catch (Exception ex) 96 { 97 ex.printStackTrace(); 98 } 99 } 100 101 /*** 102 * called by the XML parser 103 * 104 * @return an InputSource for the database.dtd file 105 */ 106 public InputSource resolveEntity(String publicId, String systemId) 107 { 108 if (databaseDTD != null && 109 "http://jakarta.apache.org/turbine/dtd/intake.dtd".equals(systemId)) 110 { 111 System.out.println("Resolver: used intake.dtd"); 112 return databaseDTD; 113 } 114 else 115 { 116 System.out.println("Resolver: used " + systemId); 117 return getInputSource(systemId); 118 } 119 } 120 121 /*** 122 * get an InputSource for an URL String 123 * 124 * @param urlString 125 * @return an InputSource for the URL String 126 */ 127 public InputSource getInputSource(String urlString) 128 { 129 try 130 { 131 URL url = new URL(urlString); 132 return new InputSource(url.openStream()); 133 } 134 catch (IOException ex) 135 { 136 ex.printStackTrace(); 137 } 138 return new InputSource(); 139 } 140 } 141 142 143 144 145

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