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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code 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
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 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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package sun.io;

A algorithmic conversion from ASCII to Unicode
Author:
Limin Shi/**
 * A algorithmic conversion from ASCII to Unicode
 *
 * @author Limin Shi
 */
public class ByteToCharASCII extends ByteToCharConverter {

    // Return the character set id
    public String getCharacterEncoding()
    {
        return "ASCII";
    }

    public int flush(char[] output, int outStart, int outEnd) {
        // This converter will not buffer any data.
        byteOff = charOff = 0;
        return 0;
    }

    
Algorithmic character conversion
/**
     * Algorithmic character conversion
     */
    public int convert(byte[] input, int inOff, int inEnd,
                       char[] output, int outOff, int outEnd)
        throws ConversionBufferFullException, UnknownCharacterException
    {
        byte    inputByte;

        charOff = outOff;
        byteOff = inOff;

        // Loop until we hit the end of the input
        while(byteOff < inEnd)
        {
            // If we don't have room for the output, throw an exception
            if (charOff >= outEnd)
                throw new ConversionBufferFullException();

            // Convert the input byte
            inputByte = input[byteOff++];

            if (inputByte >= 0)
                output[charOff++] = (char)inputByte;
            else {
                if (subMode)
                    output[charOff++] = '\uFFFD';       // Replace Char
                else {
                    badInputLength = 1;
                    throw new UnknownCharacterException();
                }
            }
        }

        // Return the length written to the output buffer
        return charOff-outOff;
    }

    /*
     *   Reset after finding bad input
     */
    public void reset() {
        byteOff = charOff = 0;
    }

}