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/*******************************************************************************
* Copyright (c) 2008 Martin Lippert and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* David Knibb initial implementation
* Martin Lippert supplementing mechanism reworked
*******************************************************************************/
package org.eclipse.equinox.weaving.hooks;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.osgi.util.ManifestElement;
import org.osgi.framework.Bundle;
public class Supplementer {
private final ManifestElement[] supplementBundle;
private final List<Bundle> supplementedBundles; // elements of type Bundle
private final Bundle supplementer;
private final ManifestElement[] supplementExporter;
private final ManifestElement[] supplementImporter;
public Supplementer(final Bundle bundle,
final ManifestElement[] supplementBundle,
final ManifestElement[] supplementImporter,
final ManifestElement[] supplementExporter) {
this.supplementer = bundle;
this.supplementBundle = supplementBundle;
this.supplementImporter = supplementImporter;
this.supplementExporter = supplementExporter;
this.supplementedBundles = new ArrayList<Bundle>();
}
public void addSupplementedBundle(final Bundle supplementedBundle) {
this.supplementedBundles.add(supplementedBundle);
}
public Bundle[] getSupplementedBundles() {
return supplementedBundles
.toArray(new Bundle[supplementedBundles.size()]);
}
public Bundle getSupplementerBundle() {
return supplementer;
}
public String getSymbolicName() {
return supplementer.getSymbolicName();
}
public boolean isSupplemented(final Bundle bundle) {
return supplementedBundles.contains(bundle);
}
public boolean matchesSupplementExporter(final ManifestElement[] exports) {
boolean matches = false;
if (supplementExporter != null)
for (int i = 0; !matches && i < supplementExporter.length; i++) {
final ManifestElement supplementExport = supplementExporter[i];
for (int j = 0; !matches && j < exports.length; j++) {
final ManifestElement exportPackage = exports[j];
if (supplementExport.getValue().equals(
exportPackage.getValue())) matches = true;
}
}
return matches;
}
public boolean matchesSupplementImporter(final ManifestElement[] imports) {
boolean matches = false;
if (supplementImporter != null)
for (int i = 0; !matches && i < supplementImporter.length; i++) {
final ManifestElement supplementImport = supplementImporter[i];
for (int j = 0; !matches && j < imports.length; j++) {
final ManifestElement importPackage = imports[j];
if (supplementImport.getValue().equals(
importPackage.getValue())) matches = true;
}
}
return matches;
}
public boolean matchSupplementer(final String symbolicName) {
boolean matches = false;
if (supplementBundle != null)
for (int i = 0; !matches && i < supplementBundle.length; i++) {
final ManifestElement bundle = supplementBundle[i];
if (equals_wild(bundle.getValue(), symbolicName))
matches = true;
}
return matches;
}
public void removeSupplementedBundle(final Bundle supplementedBundle) {
this.supplementedBundles.remove(supplementedBundle);
}
//knibb
//test if two Strings are equal
//with wild card support - only supports strings ending in *
private boolean equals_wild(final String input, final String match) {
if (input.equals(match)) {
//its a match so just return true
return true;
}
if (input.endsWith("*") == false) {
//no wildcards are being used here
return false;
}
final String wild_in = input.substring(0, input.length() - 1);
if (match.startsWith(wild_in)) return true;
return false;
}
}
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