| /* |
| * 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; |
| } |
| |
| } |