/*

   Copyright 2001  The Apache Software Foundation 

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */
package org.apache.batik.svggen.font.table;

import java.io.IOException;
import org.apache.batik.svggen.font.*;

/**
 * @version $Id: CmapIndexEntry.java,v 1.3 2004/08/18 07:15:20 vhardy Exp $
 * @author <a href="mailto:david@steadystate.co.uk">David Schweinsberg</a>
 */
public class CmapIndexEntry {

    private final int platformId;
    private final int encodingId;
    private final int offset;

    protected CmapIndexEntry(RandomAccessFileEmulator raf) throws IOException {
        platformId = raf.readUnsignedShort();
        encodingId = raf.readUnsignedShort();
        offset = raf.readInt();
    }

    public int getEncodingId() {
        return encodingId;
    }

    public int getOffset() {
        return offset;
    }

    public int getPlatformId() {
        return platformId;
    }

    @Override
    public String toString() {
        String platform;
        String encoding = "";

        switch (platformId) {
            case 1: platform = " (Macintosh)"; break;
            case 3: platform = " (Windows)"; break;
            default: platform = "";
        }
        if (platformId == 3) {
            // Windows specific encodings
            switch (encodingId) {
                case 0: encoding = " (Symbol)"; break;
                case 1: encoding = " (Unicode)"; break;
                case 2: encoding = " (ShiftJIS)"; break;
                case 3: encoding = " (Big5)"; break;
                case 4: encoding = " (PRC)"; break;
                case 5: encoding = " (Wansung)"; break;
                case 6: encoding = " (Johab)"; break;
                default: encoding = "";
            }
        }
        return new StringBuffer()
        .append( "platform id: " )
        .append( platformId )
        .append( platform )
        .append( ", encoding id: " )
        .append( encodingId )
        .append( encoding )
        .append( ", offset: " )
        .append( offset ).toString();
    }
}