diff -r 64f7ee2f31dd -r 2f6d68f22eae jdk/src/share/classes/sun/io/CharToByteDoubleByte.java --- a/jdk/src/share/classes/sun/io/CharToByteDoubleByte.java Mon Aug 29 14:27:21 2011 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,232 +0,0 @@ -/* - * Copyright (c) 1997, 2002, 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; - -/** - * @author Limin Shi - */ - -public abstract class CharToByteDoubleByte extends CharToByteConverter { - - /* - * 1st level index, provided by subclass - */ - protected short index1[]; - - /* - * 2nd level index, provided by subclass - */ - protected String index2[]; - - protected char highHalfZoneCode; - - public short[] getIndex1() { - return index1; - } - - public String[] getIndex2() { - return index2; - } - - public int flush(byte[] output, int outStart, int outEnd) - throws MalformedInputException, ConversionBufferFullException - { - if (highHalfZoneCode != 0) { - highHalfZoneCode = 0; - badInputLength = 0; - throw new MalformedInputException(); - } - byteOff = charOff = 0; - return 0; - } - - /** - * Converts characters to sequences of bytes. - * Conversions that result in Exceptions can be restarted by calling - * convert again, with appropriately modified parameters. - * @return the characters written to output. - * @param input char array containing text in Unicode - * @param inStart offset in input array - * @param inEnd offset of last byte to be converted - * @param output byte array to receive conversion result - * @param outStart starting offset - * @param outEnd offset of last byte to be written to - * @throw UnsupportedCharacterException for any character - * that cannot be converted to the external character set. - */ - public int convert(char[] input, int inOff, int inEnd, - byte[] output, int outOff, int outEnd) - throws MalformedInputException, UnknownCharacterException, - ConversionBufferFullException - { - char inputChar; // Input character to be converted - byte[] outputByte; // Output byte written to output - int inputSize = 0; // Size of input - int outputSize = 0; // Size of output - byte[] tmpbuf = new byte[2]; - - // Record beginning offsets - charOff = inOff; - byteOff = outOff; - - if (highHalfZoneCode != 0) { - inputChar = highHalfZoneCode; - highHalfZoneCode = 0; - if (input[inOff] >= 0xdc00 && input[inOff] <= 0xdfff) { - // This is legal UTF16 sequence. - badInputLength = 1; - throw new UnknownCharacterException(); - } else { - // This is illegal UTF16 sequence. - badInputLength = 0; - throw new MalformedInputException(); - } - } - - // Loop until we hit the end of the input - while(charOff < inEnd) { - inputSize = 1; - outputByte = tmpbuf; - inputChar = input[charOff]; // Get the input character - - // Is this a high surrogate? - if(inputChar >= '\uD800' && inputChar <= '\uDBFF') { - // Is this the last character of the input? - if (charOff + 1 >= inEnd) { - highHalfZoneCode = inputChar; - break; - } - - // Is there a low surrogate following? - inputChar = input[charOff + 1]; - if (inputChar >= '\uDC00' && inputChar <= '\uDFFF') { - // We have a valid surrogate pair. Too bad we don't do - // surrogates. Is substitution enabled? - if (subMode) { - outputByte = subBytes; - outputSize = subBytes.length; - inputSize = 2; - } 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 (inputChar >= '\uDC00' && inputChar <= '\uDFFF') { - badInputLength = 1; - throw new MalformedInputException(); - } else { - outputSize = convSingleByte(inputChar, outputByte); - if (outputSize == 0) { // DoubleByte - int ncode = getNative(inputChar); - if (ncode != 0 ) { - outputByte[0] = (byte) ((ncode & 0xff00) >> 8); - outputByte[1] = (byte) (ncode & 0xff); - outputSize = 2; - } else { - if (subMode) { - outputByte = subBytes; - outputSize = subBytes.length; - } else { - badInputLength = 1; - throw new UnknownCharacterException(); - } - } - } - } - - // If we don't have room for the output, throw an exception - if (byteOff + outputSize > outEnd) - throw new ConversionBufferFullException(); - - // Put the byte in the output buffer - for (int i = 0; i < outputSize; i++) { - output[byteOff++] = outputByte[i]; - } - charOff += inputSize; - } - // Return the length written to the output buffer - return byteOff - outOff; - } - - - /** - * the maximum number of bytes needed to hold a converted char - * @returns the maximum number of bytes needed for a converted char - */ - public int getMaxBytesPerChar() { - return 2; - } - - /** - * Resets the converter. - * Call this method to reset the converter to its initial state - */ - public void reset() { - byteOff = charOff = 0; - highHalfZoneCode = 0; - } - - /** - * Return whether a character is mappable or not - * @return true if a character is mappable - */ - public boolean canConvert(char ch) { - byte[] outByte = new byte[2]; - - if ((ch == (char) 0) || (convSingleByte(ch, outByte) != 0)) - return true; - if (this.getNative(ch) != 0) - return true; - return false; - } - - - /* - * Can be changed by subclass - */ - protected int convSingleByte(char inputChar, byte[] outputByte) { - if (inputChar < 0x80) { - outputByte[0] = (byte)(inputChar & 0x7f); - return 1; - } - return 0; - } - - /* - * Can be changed by subclass - */ - protected int getNative(char ch) { - int offset = index1[((ch & 0xff00) >> 8 )] << 8; - return index2[offset >> 12].charAt((offset & 0xfff) + (ch & 0xff)); - } - -}