Subversion Repositories mkgmap

/*
 * Copyright (C) 2009.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 or
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */
package uk.me.parabola.imgfmt.app.labelenc;

import java.io.ByteArrayOutputStream;
import java.nio.charset.Charset;

/**
 * Decodes strings from format 9 and a given character set to java strings.
 */
public class AnyCharsetDecoder implements CharacterDecoder {
        private final ByteArrayOutputStream out = new ByteArrayOutputStream();
        private boolean needReset;
        private final Charset charSet;

        public AnyCharsetDecoder(String charsetName) {
                charSet = Charset.forName(charsetName);
        }

        public boolean addByte(int b) {
                if (b == 0) {
                        needReset = true;
                        return true;
                }

                if (needReset) {
                        needReset = false;
                        out.reset();
                }

                out.write(b);
                return false;
        }

        public DecodedText getText() {
                byte[] ba = out.toByteArray();
                return new DecodedText(ba, charSet);
        }

        public void reset() {
                needReset = false;
                out.reset();
        }
}