Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scl.osgi / src / org / simantics / scl / osgi / internal / BundleUtils.java

diff --git a/bundles/org.simantics.scl.osgi/src/org/simantics/scl/osgi/internal/BundleUtils.java b/bundles/org.simantics.scl.osgi/src/org/simantics/scl/osgi/internal/BundleUtils.java
new file mode 100644 (file)
index 0000000..4c6d3a0
--- /dev/null
+++ b/bundles/org.simantics.scl.osgi/src/org/simantics/scl/osgi/internal/BundleUtils.java
@@ -0,0 +1,51 @@
+package org.simantics.scl.osgi.internal;\r
+\r
+import java.io.File;\r
+import java.net.URL;\r
+\r
+import org.eclipse.core.runtime.FileLocator;\r
+import org.osgi.framework.Bundle;\r
+\r
+public class BundleUtils {\r
+       \r
+       /**\r
+        * Attempt to find the given entry from the given bundle.\r
+        * \r
+        * This method looks for the entry in all bundles that have the appropriate\r
+        * symbolic name and returns the first result.\r
+        * \r
+        * @param bundle name of the bundle\r
+        * @param entry name of the entry\r
+        * @return URL of the entry or null if not found\r
+        */\r
+       public static URL getEntryFromBundle(String bundle, String entry) {\r
+               for (Bundle b : Activator.getContext().getBundles()) {\r
+                       if (b.getSymbolicName().equals(bundle)) {\r
+                               URL e = b.getEntry(entry);\r
+                               if (e != null)\r
+                                       return e; \r
+                       }\r
+               }\r
+               return null;\r
+       }\r
+       \r
+       /**\r
+        * Find the file that corresponds to the given URL.\r
+        * \r
+        * Note that this method does not work if the url points inside a bundle \r
+        * which is compiled into a jar file.\r
+        * \r
+        * @param url URL of a file (obtained with getEntryFromBundle or otherwise, \r
+        *            must actually be a file)\r
+        * @return File object that corresponds to the given URL\r
+        */\r
+       public static File getFileFromURL(URL url) {\r
+               try {\r
+                       return new File(FileLocator.toFileURL(url).toURI());\r
+               }\r
+               catch (Exception e) {\r
+                       throw new RuntimeException(e);\r
+               }\r
+       }\r
+\r
+}\r