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1
5 package xdoclet.loader;
6
7 import java.io.File  ;
8 import java.io.FileFilter ;
9 import java.io.FileInputStream ;
10 import java.io.IOException ;
11 import java.io.InputStream ;
12
13 import java.net.URL ;
14 import java.util.*;
15 import java.util.jar.JarEntry ;
16 import java.util.jar.JarFile ;
17 import java.util.zip.ZipException ;
18
19 import org.apache.commons.logging.Log;
20
21 import org.apache.tools.ant.AntClassLoader;
22 import org.xml.sax.InputSource ;
23
24 import xdoclet.util.LogUtil;
25 import xdoclet.util.Translator;
26
27
36 public class ModuleFinder
37 {
38 private final static FileFilter jarFilter =
39 new FileFilter ()
40 {
41 public boolean accept(File file)
42 {
43 return file.getName().endsWith(".jar");
44 }
45 };
46 private static String classpath;
47 private static List modules = null;
48
49 public static String getClasspath()
50 {
51 return classpath;
52 }
53
54
60 public static File getNewestFileOnClassPath()
61 {
62 List moduleFiles = findModuleFiles();
63 long newest = Long.MIN_VALUE;
64 File newestFile = null;
65
66 Iterator i = moduleFiles.iterator();
67
68 while (i.hasNext()) {
69 File moduleFile = (File ) i.next();
70
71 if (moduleFile.lastModified() >= newest) {
72 newestFile = moduleFile;
73 newest = moduleFile.lastModified();
74 }
75 }
76 return newestFile;
77 }
78
79 public static void setClasspath(String classpath)
80 {
81 ModuleFinder.classpath = classpath;
82 }
83
84
91 public static void initClasspath(Class clazz)
92 {
93 if (System.getProperty("xdoclet.class.path") == null) {
94 try {
95 classpath = ((AntClassLoader) clazz.getClassLoader()).getClasspath();
96 }
97 catch (ClassCastException e) {
98 classpath = System.getProperty("java.class.path");
99 }
100 }
101 else {
102 classpath = System.getProperty("xdoclet.class.path");
103 }
104 }
105
106
111 public static List findModules()
112 {
113 if (modules == null) {
114 modules = new ArrayList();
115
116 Log log = LogUtil.getLog(ModuleFinder.class, "findModules");
117
118 log.debug(Translator.getString(LoaderMessages.class, LoaderMessages.REGISTERING_MODULES));
119
120 XDocletXmlParser parser = new XDocletXmlParser();
121
122 List moduleFiles = findModuleFiles();
123 Iterator moduleFileIterator = moduleFiles.iterator();
124
125 while (moduleFileIterator.hasNext()) {
126 File file = (File ) moduleFileIterator.next();
127
128 if (file.exists()) {
129 try {
130 InputStream xdocletXmlIs = null;
131 URL xtagsURL = null;
132
133 if (file.isDirectory()) {
134 xdocletXmlIs = new FileInputStream (new File (file, "META-INF" + File.separator + "xdoclet.xml"));
135 xtagsURL = (new File (file, "META-INF" + File.separator + "xtags.xml")).toURL();
136 }
137 else {
138 JarFile jar = new JarFile (file);
139 JarEntry xdocletXml = jar.getJarEntry("META-INF/xdoclet.xml");
140
141 xtagsURL = new URL (new URL ("jar:" + file.toURL() + "!/"), "META-INF/xtags.xml");
142
143 if (xdocletXml != null) {
144 log.debug(Translator.getString(LoaderMessages.class, LoaderMessages.PARSING_XDOCLET_XML, new String []{file.getAbsolutePath()}));
145
146 xdocletXmlIs = jar.getInputStream(xdocletXml);
147 }
148 else {
149 log.debug(Translator.getString(LoaderMessages.class, LoaderMessages.SKIP_NO_XDOCLET_XML, new String []{file.getAbsolutePath()}));
150 }
151 }
152
153 if (xdocletXmlIs != null) {
154 InputSource in = new InputSource (xdocletXmlIs);
155
156 in.setSystemId(xtagsURL.toString());
157
158 XDocletModule module = parser.parse(in);
159
160 if (module != null) {
161 module.setXTagsDefinitionURL(xtagsURL);
162 modules.add(module);
163 }
164 else {
165 log.warn(Translator.getString(LoaderMessages.class, LoaderMessages.BAD_XDOCLET_XML, new String []{file.getAbsolutePath()}));
166 }
167 }
168 }
169 catch (ZipException ze) {
170 log.warn(Translator.getString(LoaderMessages.class, LoaderMessages.INVALID_ZIP_FILE, new String []{file.getName()}));
173 }
174 catch (IOException e) {
175 throw new IllegalStateException (Translator.getString(LoaderMessages.class, LoaderMessages.LOAD_MODULE_ERROR, new String []{e.getMessage()}));
176 }
177 }
178 else {
179 log.warn(Translator.getString(LoaderMessages.class, LoaderMessages.NONEXISTANT_CLASSPATH_ENTRY, new String []{file.getAbsolutePath()}));
180 }
181 }
182
183 log.debug(Translator.getString(LoaderMessages.class, LoaderMessages.DONE_REGISTERING_MODULES, new String []{String.valueOf(modules.size())}));
184 }
185 return modules;
186 }
187
188 public static void resetFoundModules()
189 {
190 modules = null;
191 }
192
193 private static List findModuleFiles()
194 {
195 if (classpath == null) {
196 throw new IllegalStateException (Translator.getString(LoaderMessages.class, LoaderMessages.INIT_CLASSPATH_NOT_CALLED));
197 }
198
199 ArrayList result = new ArrayList();
200
201 StringTokenizer pathTokenizer = new StringTokenizer(classpath, System.getProperty("path.separator"));
202
203 while (pathTokenizer.hasMoreTokens()) {
204 File file = new File (pathTokenizer.nextToken());
205
206 if (file.isDirectory()) {
207 if (new File (file, "META-INF" + File.separator + "xdoclet.xml").exists()) {
210 result.add(file);
211 }
212 }
213 else if (jarFilter.accept(file)) {
214 result.add(file);
215 }
216 }
217 return result;
218 }
219 }
220 |
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