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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* 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:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.net4j.internal.util.om;
import org.eclipse.net4j.internal.util.bundle.AbstractBundle;
import org.eclipse.net4j.internal.util.bundle.AbstractPlatform;
import org.eclipse.net4j.util.ReflectUtil;
import org.eclipse.net4j.util.StringUtil;
import org.eclipse.net4j.util.io.IOUtil;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.MissingResourceException;
import java.util.Properties;
import java.util.Map.Entry;
/**
* @author Eike Stepper
*/
public class LegacyBundle extends AbstractBundle
{
private URL baseURL;
public LegacyBundle(AbstractPlatform platform, String bundleID, Class<?> accessor)
{
super(platform, bundleID, accessor);
try
{
computeBaseURL(accessor);
loadOptions();
}
catch (Exception ex)
{
IOUtil.print(ex);
}
}
public String getStateLocation()
{
return new File(getPlatform().getStateFolder(), ".plugins/" + getBundleID()).getAbsolutePath();
}
public URL getBaseURL()
{
return baseURL;
}
private void loadOptions()
{
InputStream inputStream = null;
Properties properties = new Properties();
try
{
final String prefix = getBundleID() + "/"; //$NON-NLS-1$
final int length = prefix.length();
inputStream = getInputStream(".options"); //$NON-NLS-1$
properties.load(inputStream);
for (Entry<Object, Object> entry : properties.entrySet())
{
try
{
String key = (String)entry.getKey();
if (key.startsWith(prefix))
{
String value = (String)entry.getValue();
setDebugOption(key.substring(length), value);
}
}
catch (RuntimeException ignore)
{
;
}
}
}
catch (IOException ignore)
{
;
}
finally
{
IOUtil.closeSilent(inputStream);
}
}
private void computeBaseURL(Class<?> accessor) throws MalformedURLException
{
// Determine the URL for the class itself. The URL will be of one of the
// following forms, so there are a few good places to consider looking for
// the plugin.properties.
//
// For a plugin.xml with runtime="common.jar":
// jar:file:/D:/sandbox/unpackage1-3.1M7/eclipse/plugins/org.eclipse.emf.common/common.jar!/org/eclipse/common/
// CommonPlugin.class
//
// For a plugin.xml with runtime="runtime/common.jar":
//jar:file:/D:/sandbox/unpackage1-3.1M7/eclipse/plugins/org.eclipse.emf.common/runtime/common.jar!/org/eclipse/common
// /CommonPlugin.class
//
// For a plugin.xml with runtime="." where the plugin is jarred:
//jar:file:/D:/sandbox/unpackage1-3.1M7/eclipse/plugins/org.eclipse.emf.common.jar!/org/eclipse/common/CommonPlugin.
// class
//
// For a plugin.xml with runtime="." where the plugin is not jarred.
//file:/D:/sandbox/unpackage1-3.1M7/eclipse/plugins/org.eclipse.emf.common/org/eclipse/emf/common/CommonPlugin.class
//
// Running in PDE with bin on classpath:
// file:/D:/sandbox/unpackage1-3.1M7/eclipse/plugins/org.eclipse.emf.common/bin/org/eclipse/emf/common/CommonPlugin.
// class
String className = accessor.getName();
URL url = accessor.getResource(ReflectUtil.getSimpleName(accessor) + ".class"); //$NON-NLS-1$
int segmentsToTrim = 1 + StringUtil.occurrences(className, '.');
url = trimSegments(url, segmentsToTrim);
// For an archive URI, check for the plugin.properties in the archive.
if (isArchiveProtocol(url.getProtocol()))
{
try
{
// If we can open an input stream, then the plugin.properties is there,
// and we have a good base URL.
InputStream inputStream = new URL(url.toString() + "plugin.properties").openStream(); //$NON-NLS-1$
inputStream.close();
baseURL = url;
}
catch (IOException exception)
{
// If the plugin.properties isn't within the root of the archive, create
// a new URI for the folder location of the archive, so we can look in
// the folder that contains it.
url = trimSegments(new URL(url.getFile()), 1);
}
}
// If we didn't find the plugin.properties in the usual place nor in the
// archive...
if (baseURL == null)
{
// Trim off the "bin" or "runtime" segment.
String lastSegment = lastSegment(url);
if ("bin".equals(lastSegment) || "runtime".equals(lastSegment)) //$NON-NLS-1$ //$NON-NLS-2$
{
url = trimSegments(url, 1);
}
try
{
// If we can open an input stream, then the plugin.properties is in the
// folder, and we have a good base URL.
InputStream inputStream = new URL(url.toString() + "plugin.properties").openStream(); //$NON-NLS-1$
inputStream.close();
baseURL = url;
}
catch (IOException exception)
{
}
}
// If we still don't have a good base URL, complain about it.
if (baseURL == null)
{
String resourceName = ReflectUtil.getPackageName(className).replace('.', '/') + "/plugin.properties"; //$NON-NLS-1$
throw new MissingResourceException("Missing properties: " + resourceName, accessor.getName(), //$NON-NLS-1$
"plugin.properties"); //$NON-NLS-1$
}
}
private static String lastSegment(URL url)
{
String path = url.getPath();
if (path.endsWith("/")) //$NON-NLS-1$
{
path = path.substring(0, path.length() - 1);
}
int pos = path.lastIndexOf('/');
return pos == -1 ? path : path.substring(pos + 1);
}
private static URL trimSegments(URL url, int count) throws MalformedURLException
{
String path = url.getPath();
if (path.endsWith("/")) //$NON-NLS-1$
{
++count;
}
for (int i = 0; i < count; i++)
{
int pos = path.lastIndexOf('/');
if (pos == -1)
{
break;
}
// TODO Optimize
path = path.substring(0, pos);
}
return new URL(url.getProtocol() + ":" + path + "/"); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* TODO Make configurable
*
* @see org.eclipse.emf.common.util.URI#isArchiveScheme(String)
*/
private static boolean isArchiveProtocol(String scheme)
{
return "jar".equalsIgnoreCase(scheme); //$NON-NLS-1$
}
}
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