--- a/jdk/src/share/classes/sun/io/CharToByteSingleByte.java Mon Aug 29 14:27:21 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;
- }
-}