Clarify overall project structure.

[gpl/argeo-slc.git] / legacy / org.argeo.slc.spring / src / org / argeo / slc / osgi / FileSystemBundleRegister.java

diff --git a/legacy/org.argeo.slc.spring/src/org/argeo/slc/osgi/FileSystemBundleRegister.java b/legacy/org.argeo.slc.spring/src/org/argeo/slc/osgi/FileSystemBundleRegister.java
new file mode 100644 (file)
index 0000000..605c797
--- /dev/null
+++ b/legacy/org.argeo.slc.spring/src/org/argeo/slc/osgi/FileSystemBundleRegister.java
@@ -0,0 +1,113 @@
+package org.argeo.slc.osgi;
+
+import java.io.File;
+import java.util.HashSet;
+import java.util.Properties;
+import java.util.Set;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.osgi.framework.Constants;
+
+/** <b>Experimental</b> */
+public class FileSystemBundleRegister implements BundleRegister {
+       private final static Log log = LogFactory
+                       .getLog(FileSystemBundleRegister.class);
+       private Properties packagesBundles = null;
+
+       public String bundleProvidingPackage(String pkg, String version) {
+               if (packagesBundles == null)
+                       return null;
+               return packagesBundles.getProperty(pkg);
+       }
+
+       protected void scan(File baseDirectory) {
+               long begin = System.currentTimeMillis();
+               int bundleCount = 0;
+               int packageCount = 0;
+
+               packagesBundles = new Properties();
+
+               File[] files = baseDirectory.listFiles();
+               for (File file : files) {
+                       if (file.isDirectory()) {
+
+                       } else {
+                               JarFile jarFile = null;
+                               try {
+                                       jarFile = new JarFile(file);
+                                       Manifest manifest = jarFile.getManifest();
+                                       String symbolicName = manifest.getMainAttributes()
+                                                       .getValue(Constants.BUNDLE_SYMBOLICNAME);
+                                       String exportPackage = manifest.getMainAttributes()
+                                                       .getValue(Constants.EXPORT_PACKAGE);
+
+                                       // List exported packages
+                                       Set<String> exportedPackages = exportPackageToPackageNames(exportPackage);
+
+                                       for (String exportedPackage : exportedPackages) {
+                                               packagesBundles.put(exportedPackage, symbolicName);
+                                               packageCount++;
+                                               if (log.isTraceEnabled())
+                                                       log.trace("Register " + exportedPackage + "="
+                                                                       + symbolicName);
+                                       }
+                                       bundleCount++;
+                               } catch (Exception e) {
+                                       log.warn("Cannot scan " + file, e);
+                                       if (log.isTraceEnabled())
+                                               e.printStackTrace();
+                               } finally {
+                                       IOUtils.closeQuietly(jarFile);
+                               }
+                       }
+               }
+               if (log.isDebugEnabled())
+                       log.debug("Scanned " + bundleCount + " bundles with "
+                                       + packageCount + " packages in "
+                                       + (System.currentTimeMillis() - begin) + " ms");
+       }
+
+       protected Set<String> exportPackageToPackageNames(String exportPackage) {
+               Set<String> exportedPackages = new HashSet<String>();
+               if (exportPackage == null)
+                       return exportedPackages;
+               char[] arr = exportPackage.toCharArray();
+
+               StringBuffer currentPkg = new StringBuffer("");
+               boolean skip = false;
+               boolean inQuote = false;
+               for (char c : arr) {
+                       if (c == ' ' || c == '\n') {
+                               // ignore
+                       } else if (c == ';') {
+                               if (!skip)
+                                       skip = true;
+                       } else if (c == ',') {
+                               if (skip && !inQuote) {
+                                       skip = false;
+                                       // add new package
+                                       exportedPackages.add(currentPkg.toString());
+                                       currentPkg = new StringBuffer("");
+                               }
+                       } else if (c == '\"') {
+                               inQuote = inQuote ? false : true;
+                       } else {
+                               if (!skip)
+                                       currentPkg.append(c);
+                       }
+               }
+
+               return exportedPackages;
+       }
+
+       public static void main(String[] args) {
+               FileSystemBundleRegister fsbr = new FileSystemBundleRegister();
+               fsbr.scan(new File(
+                               "/home/mbaudier/dev/src/slc/dist/org.argeo.slc.sdk/target/lib"));
+
+       }
+}