/*
* Copyright (C) 2007-2012 Argeo GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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;
/** Experimental */
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 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 exportPackageToPackageNames(String exportPackage) {
Set exportedPackages = new HashSet();
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"));
}
}