diff -r 4324f19b187b -r d4c5e59b82f8 jdk/src/share/classes/sun/io/CharToByteSingleByte.java --- a/jdk/src/share/classes/sun/io/CharToByteSingleByte.java Thu Sep 01 13:54:38 2011 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,265 +0,0 @@ -/* - * Copyright (c) 1996, 2008, 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 static sun.nio.cs.CharsetMapping.*; - -/** -* A table driven conversion from char to byte for single byte -* character sets. Tables will reside in the class CharToByteYYYYY, -* where YYYYY is a unique character set identifier - - < TBD: Tables are of the form... > - -* -* @author Lloyd Honomichl -* @author Asmus Freytag -* @version 8/28/96 -*/ - -public abstract class CharToByteSingleByte extends CharToByteConverter { - - /* - * 1st level index, provided by subclass - */ - protected char[] index1; - - /* - * 2nd level index, provided by subclass - */ - protected char[] index2; - - /* - * Mask to isolate bits for 1st level index, from subclass - */ - protected int mask1; - - /* - * Mask to isolate bits for 2nd level index, from subclass - */ - protected int mask2; - - /* - * Shift to isolate bits for 1st level index, from subclass - */ - protected int shift; - - private char highHalfZoneCode; - - public char[] getIndex1() { - return index1; - } - - public char[] getIndex2() { - return index2; - } - public int flush(byte[] output, int outStart, int outEnd) - throws MalformedInputException - { - 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 MalformedInputException for any sequence of chars that is - * illegal in Unicode (principally unpaired surrogates - * and \uFFFF or \uFFFE), including any partial surrogate pair - * which occurs at the end of an input buffer. - * @throw UnsupportedCharacterException for any character that - * 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; // Size of input - int outputSize; // Size of output - - byte[] tmpArray = new byte[1]; - - // 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) { - - outputByte = tmpArray; - - // Get the input character - inputChar = input[charOff]; - - // Default output size - outputSize = 1; - - // Assume this is a simple character - inputSize = 1; - - // Is this a high surrogate? - if(inputChar >= '\uD800' && inputChar <= '\uDBFF') { - // Is this the last character in 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 map - // 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(); - } - - // Not part of a surrogate, so look it up - else { - // Get output using two level lookup - outputByte[0] = getNative(inputChar); - - // Might this character be unmappable? - if (outputByte[0] == 0) { - // If outputByte is zero because the input was zero - // then this character is actually mappable - if (input[charOff] != '\u0000') { - // We have an unmappable character - // Is substitution enabled? - 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 1; - } - - int encodeChar(char ch) { - char index = index1[ch >> 8]; - if (index == UNMAPPABLE_ENCODING) - return UNMAPPABLE_ENCODING; - return index2[index + (ch & 0xff)]; - } - - public byte getNative(char inputChar) { - int b = encodeChar(inputChar); - if (b == UNMAPPABLE_ENCODING) - return 0; - return (byte)b; - } - - /** - * 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) { - return encodeChar(ch) != UNMAPPABLE_ENCODING; - } -}