1 // $Id: EntityResolver.java 351 2008-08-14 20:20:56Z jg_hamburg $
2 /********************************************************************************
3 * DDTUnit, a Datadriven Approach to Unit- and Moduletesting
4 * Copyright (c) 2004, Joerg and Kai Gellien
5 * All rights reserved.
6 *
7 * The Software is provided under the terms of the Common Public License 1.0
8 * as provided with the distribution of DDTUnit in the file cpl-v10.html.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer.
15 *
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22 * names of its contributors may be used to endorse or promote
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38 package junitx.ddtunit.data.processing.parser;
39
40 import java.io.InputStream;
41 import java.io.InputStreamReader;
42 import java.io.Reader;
43 import java.net.URL;
44
45 import org.slf4j.Logger;
46 import org.slf4j.LoggerFactory;
47 import org.xml.sax.InputSource;
48
49 /**
50 * Example taken from: David Brownell, SAX2, O'Reilly 2002 Paris, p.88ff.
51 *
52 * @author jg
53 */
54 class EntityResolver implements org.xml.sax.EntityResolver {
55 private Logger log = LoggerFactory.getLogger(EntityResolver.class);
56
57 /**
58 * Default contructor no extras
59 */
60 public EntityResolver() {
61 // just instanciate object
62 }
63
64 /**
65 * @param publicId of xml entity to retrieve
66 * @param systemId of xml entity to retrieve
67 *
68 * @return InputSource of specified xml entity
69 *
70 * @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String,
71 * java.lang.String)
72 */
73 public InputSource resolveEntity(String publicId, String systemId) {
74 StringBuffer logMsg = new StringBuffer("resolveEntity(publicId=")
75 .append(publicId).append(", systemId=").append(systemId);
76
77 log.debug(logMsg.toString() + ") - START)");
78
79 InputSource source = null;
80
81 try {
82 if (ParserImpl.XSD_URL.equals(systemId)) {
83 URL url = this.getClass().getResource(ParserImpl.XSD_RESOURCE_PATH);
84 Reader xsdReader = new InputStreamReader(this.getClass()
85 .getResourceAsStream(ParserImpl.XSD_RESOURCE_PATH));
86
87 source = new InputSource(url.toExternalForm());
88 source.setCharacterStream(xsdReader);
89 } else if (systemId != null && systemId.startsWith("file:/")) {
90 // try local resource for XML external entity
91 String resourceName = systemId.substring(5, systemId.length());
92
93 URL url = this.getClass().getResource(resourceName);
94 InputStream resourceStream = this.getClass()
95 .getResourceAsStream(resourceName);
96 if (resourceStream != null) {
97 source = new InputSource(url.toExternalForm());
98 source.setByteStream(resourceStream);
99 }
100 }
101 } finally {
102 log.debug(logMsg + ") - END");
103 }
104
105 return source;
106 }
107 }