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/*******************************************************************************
 * Copyright (c) 2003, 2012 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.osgi.service.pluginconversion;

import java.io.File;
import java.util.Dictionary;

/**
 * A plug-in convertor is able to convert plug-in manifest files (plugin.xml) and
 * fragment manifest files (fragment.xml) to bundle manifest files (MANIFEST.MF).
 * 
 * This interface is not intended to be implemented by clients.
 * 
 * 
 * @since 3.0
 */
public interface PluginConverter {
	/**
	 * Converts a plug-in/fragment manifest at the given source base location (a directory or jar file) and 
	 * generates a corresponding bundle manifest at the given default target location (a file).
	 * 
	 * @param pluginBaseLocation the base location for the plug-in/fragment manifest to be converted
	 * 	(a directory or jar file, e.g. the plug-in install location)
	 * @param bundleManifestLocation the location for the bundle manifest to be generated
	 * 	(including the file name). 
	 * @param compatibilityManifest a boolean indicating if the manifest should contain headers to run  
	 * 	in backward compatibility
	 * @param target a string indicating the version of the runtime for which the manifest generated is targeted 
	 * @param analyseJars a boolean indicating if the code jars of the given plugin must be analysed. When set to false the Export-Package header will not be set in the bundle manifest.
	 * @param devProperties a dictionary of development time classpath properties.  The dictionary contains a mapping from plugin id to development 
	 * 	time classpath.  A value of null indicates that the default development time classpath properties will be used.
	 * @return the generated manifest file location, if a bundle manifest was successfully 
	 * 	generated (or already existed), null otherwise.
	 * @throws PluginConversionException if an error occurs while converting the manifest
	 */
	public File convertManifest(File pluginBaseLocation, File bundleManifestLocation, boolean compatibilityManifest, String target, boolean analyseJars, Dictionary devProperties) throws PluginConversionException;

	/**
	 * Converts a plug-in/fragment manifest at the given source base location (a directory or jar file) and 
	 * generates a corresponding bundle manifest returned as a dictionary.
	 * 
	 * @param pluginBaseLocation the base location for the plug-in/fragment manifest to be converted
	 * 	(a directory or jar file, e.g. the plug-in install location)
	 * @param compatibility a boolean indicating if the manifest should contain headers to run  
	 * 	in backward compatibility
	 * @param target a string indicating the version of the runtime for which the manifest generated is targeted
	 * @param analyseJars a boolean indicating if the code jars of the given plugin must be analysed. When set to false the Export-Package header will not be set in the bundle manifest.
	 * @param devProperties a dictionary of development time classpath properties.  The dictionary contains a mapping from plugin id to development 
	 * 	time classpath.  A value of null indicates that the default development time classpath properties will be used.
	 * @return the generated manifest as a dictionary,  if a bundle manifest was successfully 
	 * 	generated, null otherwise
	 * @throws PluginConversionException if an error occurs while converting the manifest
	 */
	public Dictionary convertManifest(File pluginBaseLocation, boolean compatibility, String target, boolean analyseJars, Dictionary devProperties) throws PluginConversionException;

	/**
	 * Construct a bundle manifest file from the given dictionary and write it out to the 
	 * specified location in the file system. 
	 * 
	 * If the compatibilityManifest parameter is true then 
	 * the generated manifest will include the necessary headers to all the manifest to be
	 * run in backwards compatibility mode. 
	 * 
	 * 
	 * @param generationLocation the location for the bundle manifest to be written
	 * @param manifestToWrite the dictionary to write into generationLocation file 
	 * @param compatibilityManifest a boolean indicating if the file should contain headers to allow 
	 * 	running in backward compatibility mode
	 * @throws PluginConversionException if an error occurs while writing the given manifest
	 */
	public void writeManifest(File generationLocation, Dictionary manifestToWrite, boolean compatibilityManifest) throws PluginConversionException;
}