/*
* Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.io;
/**
* 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
*/
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;
}
}