/* * Copyright (c) 1997, 2010, 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;import sun.nio.cs.ext.DoubleByte;import static sun.nio.cs.CharsetMapping.*;public abstract class CharToByteDBCS_ASCII extends CharToByteConverter{ private char highHalfZoneCode; private byte[] outputByte = new byte[2]; private DoubleByte.Encoder enc; public CharToByteDBCS_ASCII(DoubleByte.Encoder enc) { super(); this.enc = enc; } int encodeChar(char c) { return enc.encodeChar(c); } /** * flush out any residual data and reset the buffer state */ public int flush(byte [] output, int outStart, int outEnd) throws MalformedInputException, ConversionBufferFullException { if (highHalfZoneCode != 0) { reset(); badInputLength = 0; throw new MalformedInputException(); } reset(); return 0; } /** * Character conversion */ public int convert(char[] input, int inOff, int inEnd, byte[] output, int outOff, int outEnd) throws UnknownCharacterException, MalformedInputException, ConversionBufferFullException { char inputChar; int inputSize; byteOff = outOff; charOff = inOff; while(charOff < inEnd) { int index; int theBytes; int spaceNeeded; if (highHalfZoneCode == 0) { inputChar = input[charOff]; inputSize = 1; } else { inputChar = highHalfZoneCode; inputSize = 0; highHalfZoneCode = 0; } // Is this a high surrogate? if (Character.isHighSurrogate(inputChar)) { // Is this the last character of the input? if (charOff + inputSize >= inEnd) { highHalfZoneCode = inputChar; charOff += inputSize; break; } // Is there a low surrogate following? inputChar = input[charOff + inputSize]; if (Character.isLowSurrogate(inputChar)) { // We have a valid surrogate pair. Too bad we don't do // surrogates. Is substitution enabled? if (subMode) { if (subBytes.length == 1) { outputByte[0] = 0x00; outputByte[1] = subBytes[0]; } else { outputByte[0] = subBytes[0]; outputByte[1] = subBytes[1]; } inputSize++; } else { badInputLength = 2; throw new UnknownCharacterException(); } } else { // We have a malformed surrogate pair badInputLength = 1; throw new MalformedInputException(); } } // Is this an unaccompanied low surrogate? else if (Character.isLowSurrogate(inputChar)) { badInputLength = 1; throw new MalformedInputException(); } else { // We have a valid character, get the bytes for it theBytes = encodeChar(inputChar); if (theBytes == UNMAPPABLE_ENCODING) { // if there was no mapping - look for substitution characters if (subMode) { if (subBytes.length == 1) { outputByte[0] = 0x00; outputByte[1] = subBytes[0]; } else { outputByte[0] = subBytes[0]; outputByte[1] = subBytes[1]; } } else { badInputLength = 1; throw new UnknownCharacterException(); } } else { outputByte[0] = (byte)(theBytes >>8); outputByte[1] = (byte)theBytes; } } if (outputByte[0] == 0x00) spaceNeeded = 1; else spaceNeeded = 2; if (byteOff + spaceNeeded > outEnd) throw new ConversionBufferFullException(); if (spaceNeeded == 1) output[byteOff++] = outputByte[1]; else { output[byteOff++] = outputByte[0]; output[byteOff++] = outputByte[1]; } charOff += inputSize; } return byteOff - outOff; } /** * Resets converter to its initial state. */ public void reset() { charOff = byteOff = 0; highHalfZoneCode = 0; } /** * Returns the maximum number of bytes needed to convert a char. */ public int getMaxBytesPerChar() { return 2; } /** * Returns true if the given character can be converted to the * target character encoding. */ public boolean canConvert(char c) { return encodeChar(c) != UNMAPPABLE_ENCODING; }}
/*
* Copyright (c) 1997, 2010, 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;
import sun.nio.cs.ext.DoubleByte;
import static sun.nio.cs.CharsetMapping.*;
public abstract class CharToByteDBCS_ASCII extends CharToByteConverter
{
private char highHalfZoneCode;
private byte[] outputByte = new byte[2];
private DoubleByte.Encoder enc;
public CharToByteDBCS_ASCII(DoubleByte.Encoder enc) {
super();
this.enc = enc;
}
int encodeChar(char c) {
return enc.encodeChar(c);
}
/**
* flush out any residual data and reset the buffer state
*/
public int flush(byte [] output, int outStart, int outEnd)
throws MalformedInputException, ConversionBufferFullException
{
if (highHalfZoneCode != 0) {
reset();
badInputLength = 0;
throw new MalformedInputException();
}
reset();
return 0;
}
/**
* Character conversion
*/
public int convert(char[] input, int inOff, int inEnd,
byte[] output, int outOff, int outEnd)
throws UnknownCharacterException, MalformedInputException,
ConversionBufferFullException
{
char inputChar;
int inputSize;
byteOff = outOff;
charOff = inOff;
while(charOff < inEnd) {
int index;
int theBytes;
int spaceNeeded;
if (highHalfZoneCode == 0) {
inputChar = input[charOff];
inputSize = 1;
} else {
inputChar = highHalfZoneCode;
inputSize = 0;
highHalfZoneCode = 0;
}
// Is this a high surrogate?
if (Character.isHighSurrogate(inputChar)) {
// Is this the last character of the input?
if (charOff + inputSize >= inEnd) {
highHalfZoneCode = inputChar;
charOff += inputSize;
break;
}
// Is there a low surrogate following?
inputChar = input[charOff + inputSize];
if (Character.isLowSurrogate(inputChar)) {
// We have a valid surrogate pair. Too bad we don't do
// surrogates. Is substitution enabled?
if (subMode) {
if (subBytes.length == 1) {
outputByte[0] = 0x00;
outputByte[1] = subBytes[0];
}
else {
outputByte[0] = subBytes[0];
outputByte[1] = subBytes[1];
}
inputSize++;
} else {
badInputLength = 2;
throw new UnknownCharacterException();
}
} else {
// We have a malformed surrogate pair
badInputLength = 1;
throw new MalformedInputException();
}
}
// Is this an unaccompanied low surrogate?
else if (Character.isLowSurrogate(inputChar)) {
badInputLength = 1;
throw new MalformedInputException();
} else {
// We have a valid character, get the bytes for it
theBytes = encodeChar(inputChar);
if (theBytes == UNMAPPABLE_ENCODING) {
// if there was no mapping - look for substitution characters
if (subMode) {
if (subBytes.length == 1) {
outputByte[0] = 0x00;
outputByte[1] = subBytes[0];
} else {
outputByte[0] = subBytes[0];
outputByte[1] = subBytes[1];
}
} else {
badInputLength = 1;
throw new UnknownCharacterException();
}
} else {
outputByte[0] = (byte)(theBytes >>8);
outputByte[1] = (byte)theBytes;
}
}
if (outputByte[0] == 0x00)
spaceNeeded = 1;
else
spaceNeeded = 2;
if (byteOff + spaceNeeded > outEnd)
throw new ConversionBufferFullException();
if (spaceNeeded == 1)
output[byteOff++] = outputByte[1];
else {
output[byteOff++] = outputByte[0];
output[byteOff++] = outputByte[1];
}
charOff += inputSize;
}
return byteOff - outOff;
}
/**
* Resets converter to its initial state.
*/
public void reset() {
charOff = byteOff = 0;
highHalfZoneCode = 0;
}
/**
* Returns the maximum number of bytes needed to convert a char.
*/
public int getMaxBytesPerChar() {
return 2;
}
/**
* Returns true if the given character can be converted to the
* target character encoding.
*/
public boolean canConvert(char c) {
return encodeChar(c) != UNMAPPABLE_ENCODING;
}
}