org.jruby.embed.osgi.internal.OSGiLoadService Maven / Gradle / Ivy
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package org.jruby.embed.osgi.internal;
import java.net.URL;
import java.util.StringTokenizer;
import org.jruby.Ruby;
import org.jruby.RubyInstanceConfig.LoadServiceCreator;
import org.jruby.embed.osgi.utils.OSGiFileLocator;
import org.jruby.platform.Platform;
import org.jruby.runtime.load.Library;
import org.jruby.runtime.load.LoadService;
import org.jruby.runtime.load.LoadServiceResource;
import org.osgi.framework.Bundle;
/**
* @author hmalphettes
*
* Load scripts and java classes directly from the OSGi bundles.
* bundle:/symbolic.name/
*/
public class OSGiLoadService extends LoadService {
public static final String OSGI_BUNDLE_CLASSPATH_SCHEME = "osgibundle:/";
public static LoadServiceCreator OSGI_DEFAULT = new LoadServiceCreator() {
public LoadService create(Ruby runtime) {
if (runtime.is1_9()) {
return new OSGiLoadService19(runtime);
}
return new OSGiLoadService(runtime);
}
};
/**
* Default constructor
* Optional constructor (why?)
* @param runtime
*/
public OSGiLoadService(Ruby runtime) {
super(runtime);
// super.searchers.add(new OSGiBundlesSearcher());
}
/**
* Support for 'bundle:/' to look for libraries in osgi bundles
* or classes or ruby files.
*
* @mri rb_find_file
* @param name the file to find, this is a path name
* @return the correct file
*/
@Override
protected LoadServiceResource findFileInClasspath(String name) {
if (name.startsWith(OSGI_BUNDLE_CLASSPATH_SCHEME)) {
name = cleanupFindName(name);
StringTokenizer tokenizer = new StringTokenizer(name, "/", false);
tokenizer.nextToken();
String symname = tokenizer.nextToken();
StringBuilder sb = new StringBuilder();
if (!tokenizer.hasMoreTokens()) {
sb.append('/');
} else {
while (tokenizer.hasMoreTokens()) {
sb.append('/');
sb.append(tokenizer.nextToken());
}
}
Bundle bundle = OSGiFileLocator.getBundle(symname);
if (bundle != null) {
URL url = bundle.getEntry(sb.toString());
if (url != null) {
return new LoadServiceResource(
OSGiFileLocator.getLocalURL(url), name);
}
}
}
return super.findFileInClasspath(name);
}
/**
* Support for 'bundle:/' to look for libraries in osgi bundles.
*/
@Override
protected Library createLibrary(SearchState state, LoadServiceResource resource) {
if (resource == null) {
return null;
}
String file = state.loadName;
if (file.startsWith(OSGI_BUNDLE_CLASSPATH_SCHEME)) {
file = cleanupFindName(file);
StringTokenizer tokenizer = new StringTokenizer(file, "/", false);
tokenizer.nextToken();
String symname = tokenizer.nextToken();
Bundle bundle = OSGiFileLocator.getBundle(symname);
if (bundle != null) {
return new OSGiBundleLibrary(bundle);
}
}
return super.createLibrary(state, resource);
}
/**
* Remove the extension when they are misleading.
* @param name
* @return
*/
private String cleanupFindName(String name) {
if (name.endsWith(".jar")) {
return name.substring(0, name.length()-".jar".length());
} else if (name.endsWith(".class")) {
return name.substring(0, name.length()-".class".length());
} else {
return name;
}
}
}
class OSGiLoadService19 extends OSGiLoadService {
public OSGiLoadService19(Ruby runtime) {
super(runtime);
}
@Override
protected String resolveLoadName(LoadServiceResource foundResource, String previousPath) {
String path = foundResource.getAbsolutePath();
if (Platform.IS_WINDOWS) {
path = path.replace('\\', '/');
}
return path;
}
}