Coverage report

  %line %branch
org.apache.turbine.services.intake.transform.DTDResolver
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 1  
 package org.apache.turbine.services.intake.transform;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
 6  
  * Licensed under the Apache License, Version 2.0 (the "License")
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 import java.io.IOException;
 20  
 import java.io.InputStream;
 21  
 import java.net.URL;
 22  
 
 23  
 import org.apache.commons.logging.Log;
 24  
 import org.apache.commons.logging.LogFactory;
 25  
 
 26  
 import org.xml.sax.EntityResolver;
 27  
 import org.xml.sax.InputSource;
 28  
 
 29  
 /**
 30  
  * A resolver to get the database.dtd file for the XML parser from the jar.
 31  
  * This does not work with jdk1.3 on linux and OSX, see
 32  
  * <a href="http://developer.java.sun.com/developer/bugParade/bugs/4337703.html">
 33  
  * Bug 4337703</a>
 34  
  *
 35  
  * @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a>
 36  
  * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
 37  
  * @author <a href="mailto:quintonm@bellsouth.net">Quinton McCombs</a>
 38  
  * @version $Id: DTDResolver.java 264148 2005-08-29 14:21:04Z henning $
 39  
  */
 40  
 public class DTDResolver implements EntityResolver
 41  
 {
 42  
     private static final String WEB_SITE_DTD =
 43  
             "http://jakarta.apache.org/turbine/dtd/intake_2_3.dtd";
 44  
 
 45  
     /** InputSource for <code>intake.dtd</code>. */
 46  0
     private InputSource intakeDTD = null;
 47  
 
 48  
     /** Logging */
 49  0
     private static Log log = LogFactory.getLog(DTDResolver.class);
 50  
 
 51  
     /**
 52  
      * constructor
 53  
      */
 54  
     public DTDResolver()
 55  0
     {
 56  
         try
 57  
         {
 58  0
             InputStream dtdStream =
 59  
                     getClass().getResourceAsStream("intake.dtd");
 60  
 
 61  
             // getResource was buggy on many systems including Linux,
 62  
             // OSX, and some versions of windows in jdk1.3.
 63  
             // getResourceAsStream works on linux, maybe others?
 64  0
             if (dtdStream != null)
 65  
             {
 66  0
                 intakeDTD = new InputSource(dtdStream);
 67  
             }
 68  
             else
 69  
             {
 70  0
                 log.warn("Could not located the intake.dtd");
 71  
             }
 72  
         }
 73  0
         catch (Exception ex)
 74  
         {
 75  0
             log.error("Could not get stream for dtd", ex);
 76  0
         }
 77  0
     }
 78  
 
 79  
     /**
 80  
      * called by the XML parser
 81  
      *
 82  
      * @return an InputSource for the intake.dtd file
 83  
      */
 84  
     public InputSource resolveEntity(String class="keyword">publicId, String systemId)
 85  
     {
 86  0
         if (intakeDTD != null && WEB_SITE_DTD.equals(systemId))
 87  
         {
 88  0
             String pkg = getClass().getName()
 89  
                     .substring(0, getClass().getName().lastIndexOf("."));
 90  
 
 91  0
             log.info("Resolver: used intake.dtd from " +
 92  
                     pkg + " package ");
 93  
 
 94  0
             return intakeDTD;
 95  
         }
 96  0
         else if (systemId == null)
 97  
         {
 98  0
             log.info("Resolver: used intake.dtd from Jakarta Web site");
 99  0
             return getInputSource(WEB_SITE_DTD);
 100  
         }
 101  
         else
 102  
         {
 103  0
             log.info("Resolver: used System DTD for " + systemId);
 104  0
             return getInputSource(systemId);
 105  
         }
 106  
     }
 107  
 
 108  
     /**
 109  
      * Retrieves a XML input source for the specified URL.
 110  
      *
 111  
      * @param urlString The URL of the input source.
 112  
      * @return <code>InputSource</code> for the URL.
 113  
      */
 114  
     private InputSource getInputSource(String urlString)
 115  
     {
 116  
         try
 117  
         {
 118  0
             URL url = new URL(urlString);
 119  0
             return new InputSource(url.openStream());
 120  
         }
 121  0
         catch (IOException ex)
 122  
         {
 123  0
             log.error("Could not get InputSource for " + urlString, ex);
 124  
         }
 125  0
         return new InputSource();
 126  
     }
 127  
 }

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