|
1
11 package org.eclipse.equinox.launcher;
12
13 import java.io.IOException  ;
14 import java.net.JarURLConnection ;
15 import java.net.URL ;
16 import java.net.URLConnection ;
17 import java.util.ArrayList ;
18 import java.util.Enumeration ;
19 import java.util.HashMap ;
20 import java.util.Iterator ;
21 import java.util.List ;
22 import java.util.Map ;
23 import java.util.StringTokenizer ;
24 import java.util.jar.JarFile ;
25 import java.util.jar.Manifest ;
26
27
37 public class WebStartMain extends Main {
39 private static final String PROP_WEBSTART_AUTOMATIC_INSTALLATION = "eclipse.webstart.automaticInstallation"; private static final String DEFAULT_OSGI_BUNDLES = "org.eclipse.equinox.common@2:start, org.eclipse.core.runtime@start"; private static final String PROP_OSGI_BUNDLES = "osgi.bundles"; private static final String PROP_CHECK_CONFIG = "osgi.checkConfiguration";
44 private Map allBundles = null; private List bundleList = null;
47 private class BundleInfo {
48 String bsn;
49 String version;
50 String startData;
51 String location;
52 }
53
54 public static void main(String [] args) {
55 System.setSecurityManager(null); int result = new WebStartMain().run(args);
57 if (!Boolean.getBoolean(PROP_NOSHUTDOWN))
58 System.exit(result);
59 }
60
61 private void setDefaultBundles() {
62 if (System.getProperty(PROP_OSGI_BUNDLES) != null)
63 return;
64 System.getProperties().put(PROP_OSGI_BUNDLES, DEFAULT_OSGI_BUNDLES);
65 }
66
67 protected void basicRun(String [] args) throws Exception {
68 setDefaultBundles();
69 initializeBundleListStructure();
70 discoverBundles();
71 String fwkURL = searchFor(framework, null);
73 if (fwkURL == null) {
74 }
76 allBundles.remove(framework);
77 System.getProperties().put(PROP_FRAMEWORK, fwkURL);
78 super.basicRun(args);
79 }
80
81 protected void beforeFwkInvocation() {
82 if (System.getProperty(PROP_CHECK_CONFIG) == null)
84 System.getProperties().put(PROP_CHECK_CONFIG, "true"); buildOSGiBundleList();
86 cleanup();
87 }
88
89
92 private void cleanup() {
93 allBundles = null;
94 bundleList = null;
95 }
96
97
101 protected String searchFor(final String target, String start) {
102 ArrayList matches = (ArrayList ) allBundles.get(target);
103 if (matches == null)
104 return null;
105 int numberOfMatches = matches.size();
106 if (numberOfMatches == 1) {
107 return ((BundleInfo) matches.get(0)).location;
108 }
109 if (numberOfMatches == 0)
110 return null;
111
112 String [] versions = new String [numberOfMatches];
113 int highest = 0;
114 for (int i = 0; i < versions.length; i++) {
115 versions[i] = ((BundleInfo) matches.get(i)).version;
116 highest = findMax(versions);
117 }
118 return ((BundleInfo) matches.get(highest)).location;
119 }
120
121 private BundleInfo findBundle(final String target, String version, boolean removeMatch) {
122 ArrayList matches = (ArrayList ) allBundles.get(target);
123 int numberOfMatches = matches.size();
124 if (numberOfMatches == 1) {
125 return (BundleInfo) matches.remove(0);
127 }
128 if (numberOfMatches == 0)
129 return null;
130
131 if (version != null) {
132 for (Iterator iterator = matches.iterator(); iterator.hasNext();) {
133 BundleInfo bi = (BundleInfo) iterator.next();
134 if (bi.version.equals(version)) {
135 iterator.remove();
136 return bi;
137 }
138 }
139 return null;
141 }
142 String [] versions = new String [numberOfMatches];
143 int highest = 0;
144 for (int i = 0; i < versions.length; i++) {
145 versions[i] = ((BundleInfo) matches.get(i)).version;
146 highest = findMax(versions);
147 }
148 return (BundleInfo) matches.remove(highest);
149 }
150
151
154 private void discoverBundles() {
155 allBundles = new HashMap ();
156 try {
157 Enumeration resources = WebStartMain.class.getClassLoader().getResources(JarFile.MANIFEST_NAME);
158 while (resources.hasMoreElements()) {
159 BundleInfo found = getBundleInfo((URL ) resources.nextElement());
160 if (found == null)
161 continue;
162 ArrayList matching = (ArrayList ) allBundles.get(found.bsn);
163 if (matching == null) {
164 matching = new ArrayList (1);
165 allBundles.put(found.bsn, matching);
166 }
167 matching.add(found);
168 }
169 } catch (IOException e) {
170 e.printStackTrace();
171 }
172 }
173
174 private String extractInnerURL(URL url) {
175 try {
176 URLConnection connection = null;
177 try {
178 connection = url.openConnection();
179 if (connection instanceof JarURLConnection ) {
180 return "file:" + ((JarURLConnection ) connection).getJarFile().getName();
181 }
182 } finally {
183 if (connection != null)
184 connection.getInputStream().close();
185 }
186 } catch (IOException e) {
187 }
189 return url.toExternalForm();
190 }
191
192
195 private void initializeBundleListStructure() {
196 final char STARTLEVEL_SEPARATOR = '@';
197
198 String prop = System.getProperty(PROP_OSGI_BUNDLES);
200 if (prop == null || prop.trim().equals("")) { bundleList = new ArrayList (0);
202 return;
203 }
204
205 bundleList = new ArrayList (10);
206 StringTokenizer tokens = new StringTokenizer (prop, ","); while (tokens.hasMoreTokens()) {
208 String token = tokens.nextToken().trim();
209 String bundleId = token;
210 if (token.equals("")) continue;
212 int startLevelSeparator;
213 BundleInfo toAdd = new BundleInfo();
214 toAdd.bsn = bundleId;
215 if ((startLevelSeparator = token.lastIndexOf(STARTLEVEL_SEPARATOR)) != -1) {
216 toAdd.bsn = token.substring(0, startLevelSeparator);
217 toAdd.startData = token.substring(startLevelSeparator);
218 }
220 bundleList.add(toAdd);
221 }
222 }
223
224 private BundleInfo getBundleInfo(URL manifestURL) {
225 final String BUNDLE_SYMBOLICNAME = "Bundle-SymbolicName"; final String BUNDLE_VERSION = "Bundle-Version"; final String DEFAULT_VERSION = "0.0.0";
229 Manifest mf;
230 try {
231 mf = new Manifest (manifestURL.openStream());
232 String symbolicNameString = mf.getMainAttributes().getValue(BUNDLE_SYMBOLICNAME);
233 if (symbolicNameString == null)
234 return null;
235
236 BundleInfo result = new BundleInfo();
237 String version = mf.getMainAttributes().getValue(BUNDLE_VERSION);
238 result.version = (version != null) ? version : DEFAULT_VERSION;
239 result.location = extractInnerURL(manifestURL);
240 int pos = symbolicNameString.lastIndexOf(';');
241 if (pos != -1) {
242 result.bsn = symbolicNameString.substring(0, pos);
243 return result;
244 }
245 result.bsn = symbolicNameString;
246 return result;
247 } catch (IOException e) {
248 if (debug)
249 e.printStackTrace();
250 }
251 return null;
252 }
253
254 private void buildOSGiBundleList() {
256 StringBuffer finalBundleList = new StringBuffer (allBundles.size() * 30);
257 for (Iterator iterator = bundleList.iterator(); iterator.hasNext();) {
259 BundleInfo searched = (BundleInfo) iterator.next();
260 BundleInfo found = findBundle(searched.bsn, searched.version, true);
261 finalBundleList.append(REFERENCE_SCHEME).append(found.location).append(searched.startData).append(',');
262 }
263
264 if (!Boolean.FALSE.toString().equalsIgnoreCase(System.getProperties().getProperty(PROP_WEBSTART_AUTOMATIC_INSTALLATION))) {
265 for (Iterator iterator = allBundles.values().iterator(); iterator.hasNext();) {
266 ArrayList toAdd = (ArrayList ) iterator.next();
267 for (Iterator iterator2 = toAdd.iterator(); iterator2.hasNext();) {
268 BundleInfo bi = (BundleInfo) iterator2.next();
269 finalBundleList.append(REFERENCE_SCHEME).append(bi.location).append(',');
270 }
271 }
272 }
273 System.getProperties().put(PROP_OSGI_BUNDLES, finalBundleList.toString());
274 }
275 }
276 |
Popular Tags |
Java API By Example, From Geeks To Geeks.