bundles/org.eclipse.team.core/src/org/eclipse/team/internal/core/PluginStringMappings.java

/*******************************************************************************
 * Copyright (c) 2000, 2006 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.team.internal.core;

import java.util.*;

import org.eclipse.core.runtime.*;
import org.eclipse.team.core.Team;

/**
 * 
 */
public class PluginStringMappings {
    
    private final String fExtensionID;
    private final String fAttributeName;
    
    private SortedMap fMappings;

    public PluginStringMappings(String extensionID, String stringAttributeName) {
        fExtensionID= extensionID;
        fAttributeName= stringAttributeName;
    }
    
    /**
     * Load all the extension patterns contributed by plugins.
     * @return a map with the patterns
     */
    private SortedMap loadPluginPatterns() {
        
        final SortedMap result= new TreeMap();
        
        final TeamPlugin plugin = TeamPlugin.getPlugin();
        if (plugin == null)
            return result;
        
        final IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(TeamPlugin.ID, fExtensionID);//TeamPlugin.FILE_TYPES_EXTENSION);
        if (extension == null)
            return result;
        
        final IExtension[] extensions =  extension.getExtensions();
        
        for (int i = 0; i < extensions.length; i++) {
            IConfigurationElement[] configElements = extensions[i].getConfigurationElements();
            
            for (int j = 0; j < configElements.length; j++) {
                
                final String ext = configElements[j].getAttribute(fAttributeName);//"extension"); 
                final String type = configElements[j].getAttribute("type"); //$NON-NLS-1$
                if (ext == null || type == null) 
                    continue;
                
                if (type.equals("text")) { //$NON-NLS-1$
                    result.put(ext, new Integer(Team.TEXT));
                } else if (type.equals("binary")) { //$NON-NLS-1$
                    result.put(ext, new Integer(Team.BINARY));
                }
            }
        }
        return result;
    }
    
    public Map referenceMap() {
        if (fMappings == null) {
            fMappings= loadPluginPatterns();
        }
        return fMappings;
    }

    public int getType(String filename) {
        final Map mappings= referenceMap();
        return mappings.containsKey(filename) ? ((Integer)mappings.get(filename)).intValue() : Team.UNKNOWN;
    }       
}