src/share/classes/sun/io/CharToByteCp933.java
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@@ -1,7 +1,7 @@
/*
- * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.
+ * Copyright 1997-2003 Sun Microsystems, Inc. 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. Sun designates this
@@ -22,464 +22,18 @@
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.io;
-import sun.nio.cs.ext.IBM933;
+import sun.nio.cs.ext.*;
-/**
-* @author Malcolm Ayres
-*/
+public class CharToByteCp933 extends CharToByteDBCS_EBCDIC {
-public class CharToByteCp933 extends CharToByteConverter
-{
- private static final char SBase = '\uAC00';
- private static final char LBase = '\u1100';
- private static final char VBase = '\u1161';
- private static final char TBase = '\u11A7';
- private static final int VCount = 21;
- private static final int TCount = 28;
- private static final byte G0 = 0;
- private static final byte G1 = 1;
- private static final byte G2 = 2;
- private static final byte G3 = 3;
- private byte charState = G0;
- private char l, v, t;
-
- private int byteState;
- private byte[] outputByte;
- private static final int SBCS = 0;
- private static final int DBCS = 1;
- private static final byte SO = 0x0e;
- private static final byte SI = 0x0f;
-
- private char highHalfZoneCode;
-
- private short[] index1;
- private String index2;
- private String index2a;
- private int mask1;
- private int mask2;
- private int shift;
-
- private final static IBM933 nioCoder = new IBM933();
-
-
- public CharToByteCp933() {
- super();
- byteState = doSBCS()?SBCS:DBCS;
- highHalfZoneCode = 0;
- outputByte = new byte[2];
- mask1 = 0xFFF8;
- mask2 = 0x0007;
- shift = 3;
- index1 = nioCoder.getEncoderIndex1();
- index2 = nioCoder.getEncoderIndex2();
- index2a = nioCoder.getEncoderIndex2a();
- subBytes = new byte[1];
- subBytes[0] = 0x6f;
- }
-
- /**
- * flush out any residual data and reset the buffer state
- */
- public int flush(byte[] output, int outStart, int outEnd)
- throws MalformedInputException,
- ConversionBufferFullException
- {
- int bytesOut;
-
- byteOff = outStart;
-
- if (highHalfZoneCode != 0) {
- reset();
- badInputLength = 0;
- throw new MalformedInputException();
- }
-
- if (charState != G0) {
- try {
- unicodeToBuffer(composeHangul() ,output, outEnd);
- }
- catch(UnknownCharacterException e) {
- reset();
- badInputLength = 0;
- throw new MalformedInputException();
- }
- charState = G0;
- }
-
- if (byteState == DBCS && doSBCS()) {
- if (byteOff >= outEnd)
- throw new ConversionBufferFullException();
- output[byteOff++] = SI;
- byteState = SBCS;
- }
-
- bytesOut = byteOff - outStart;
-
- reset();
- return bytesOut;
- }
-
- /**
- * Resets converter to its initial state.
- */
- public void reset() {
- byteState = doSBCS()?SBCS:DBCS;
- highHalfZoneCode = 0;
- charState = G0;
- charOff = byteOff = 0;
- }
-
- /**
- * Returns true if the given character can be converted to the
- * target character encoding.
- */
- public boolean canConvert(char ch) {
- return encodeHangul(ch) != -1;
- }
-
- /**
- * Sets the substitution bytes to use when the converter is in
- * substitution mode. The given bytes should represent a valid
- * character in the target character encoding.
- */
-
- public void setSubstitutionBytes( byte[] newSubBytes )
- throws IllegalArgumentException
- {
- if( newSubBytes.length > 2 || newSubBytes.length == 0) {
- throw new IllegalArgumentException();
- }
-
- subBytes = new byte[ newSubBytes.length ];
- System.arraycopy( newSubBytes, 0, subBytes, 0, newSubBytes.length );
-
- }
-
- /**
- * 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;
-
- charOff = inOff;
- byteOff = outOff;
-
- while (charOff < inEnd) {
-
- if (highHalfZoneCode == 0) {
- inputChar = input[charOff];
- inputSize = 1;
- } else {
- inputChar = highHalfZoneCode;
- inputSize = 0;
- highHalfZoneCode = 0;
- }
-
- switch (charState) {
- case G0:
-
- l = LBase;
- v = VBase;
- t = TBase;
-
- if ( isLeadingC(inputChar) ) { // Leading Consonant
- l = inputChar;
- charState = G1;
- break;
- }
-
- if ( isVowel(inputChar) ) { // Vowel
- v = inputChar;
- charState = G2;
- break;
- }
-
- if ( isTrailingC(inputChar) ) { // Trailing Consonant
- t = inputChar;
- charState = G3;
- break;
- }
-
- break;
-
- case G1:
- if ( isLeadingC(inputChar) ) { // Leading Consonant
- l = composeLL(l, inputChar);
- break;
- }
-
- if ( isVowel(inputChar) ) { // Vowel
- v = inputChar;
- charState = G2;
- break;
- }
-
- if ( isTrailingC(inputChar) ) { // Trailing Consonant
- t = inputChar;
- charState = G3;
- break;
- }
-
- unicodeToBuffer(composeHangul(), output, outEnd);
-
- charState = G0;
- break;
-
- case G2:
- if ( isLeadingC(inputChar) ) { // Leading Consonant
-
- unicodeToBuffer(composeHangul(), output, outEnd);
-
- l = inputChar;
- v = VBase;
- t = TBase;
- charState = G1;
- break;
- }
-
- if ( isVowel(inputChar) ) { // Vowel
- v = composeVV(l, inputChar);
- charState = G2;
- break;
- }
-
- if ( isTrailingC(inputChar) ) { // Trailing Consonant
- t = inputChar;
- charState = G3;
- break;
- }
-
- unicodeToBuffer(composeHangul(), output, outEnd);
-
- charState = G0;
-
- break;
-
- case G3:
- if ( isTrailingC(inputChar) ) { // Trailing Consonant
- t = composeTT(t, inputChar);
- charState = G3;
- break;
- }
-
- unicodeToBuffer(composeHangul(), output, outEnd);
-
- charState = G0;
-
- break;
- }
-
- if (charState != G0)
- charOff++;
- else {
-
- // Is this a high surrogate?
- if(inputChar >= '\ud800' && inputChar <= '\udbff') {
- // 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 (inputChar >= '\udc00' && inputChar <= '\udfff') {
- // 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];
- }
-
- bytesToBuffer(outputByte, output, outEnd);
- 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 (inputChar >= '\uDC00' && inputChar <= '\uDFFF') {
- badInputLength = 1;
- throw new MalformedInputException();
- } else {
- unicodeToBuffer(inputChar, output, outEnd);
- }
-
- charOff += inputSize;
-
- }
-
- }
-
- return byteOff - outOff;
-
- }
-
- private char composeHangul() {
- int lIndex, vIndex, tIndex;
-
- lIndex = l - LBase;
- vIndex = v - VBase;
- tIndex = t - TBase;
-
- return (char)((lIndex * VCount + vIndex) * TCount + tIndex + SBase);
- }
-
- private char composeLL(char l1, char l2) {
- return l2;
- }
-
- private char composeVV(char v1, char v2) {
- return v2;
- }
-
- private char composeTT(char t1, char t2) {
- return t2;
- }
-
- private boolean isLeadingC(char c) {
- return (c >= LBase && c <= '\u1159');
- }
-
- private boolean isVowel(char c) {
- return (c >= VBase && c <= '\u11a2');
- }
-
- private boolean isTrailingC(char c) {
- return (c >= TBase && c <= '\u11f9');
- }
-
- /**
- * returns the maximum number of bytes needed to convert a char
- */
- public int getMaxBytesPerChar() {
- return 4;
- }
-
- /**
- * Return the character set ID
- */
+ // Return the character set id
public String getCharacterEncoding() {
return "Cp933";
}
- /**
- * private function to add the bytes to the output buffer
- */
- private void bytesToBuffer(byte[] theBytes, byte[] output, int outEnd)
- throws ConversionBufferFullException,
- UnknownCharacterException {
-
- int spaceNeeded;
-
- // Set the output buffer into the correct state
-
- if (byteState == DBCS && theBytes[0] == 0x00) {
- if (byteOff >= outEnd)
- throw new ConversionBufferFullException();
- byteState = SBCS;
- output[byteOff++] = SI;
- } else
- if (byteState == SBCS && theBytes[0] != 0x00) {
- if (byteOff >= outEnd)
- throw new ConversionBufferFullException();
- byteState = DBCS;
- output[byteOff++] = SO;
+ public CharToByteCp933() {
+ super((DoubleByte.Encoder)new IBM933().newEncoder());
}
-
-
- // ensure sufficient space for the bytes(s)
-
- if (byteState == DBCS)
- spaceNeeded = 2;
- else
- spaceNeeded = 1;
-
- if (byteOff + spaceNeeded > outEnd)
- throw new ConversionBufferFullException();
-
- // move the data into the buffer
-
- if (byteState == SBCS)
- output[byteOff++] = theBytes[1];
- else {
- output[byteOff++] = theBytes[0];
- output[byteOff++] = theBytes[1];
- }
- }
-
- // return -1 for unmappable character
- protected int encodeHangul(char unicode) {
- int theBytes;
- int index;
- index = index1[((unicode & mask1) >> shift)] + (unicode & mask2);
- if (index < 15000)
- theBytes = (int)(index2.charAt(index));
- else
- theBytes = (int)(index2a.charAt(index-15000));
-
- // The input char is undefined if theBytes is 0 and the char is NOT unicode 0
- if (theBytes == 0 && unicode != '\u0000')
- return -1;
- return theBytes;
- }
-
- /**
- * private function to add a unicode character to the output buffer
- */
- private void unicodeToBuffer(char unicode, byte[] output, int outEnd)
- throws ConversionBufferFullException,
- UnknownCharacterException {
-
- // first we convert the unicode to its byte representation
- int theBytes = encodeHangul(unicode);
-
- // if the unicode was not mappable - look for the substitution bytes
- if (theBytes == -1) {
- 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 & 0x0000ff00)>>8);
- outputByte[1] = (byte)(theBytes & 0x000000ff);
- }
-
- // now put the bytes in the buffer
- bytesToBuffer(outputByte, output, outEnd);
- }
-
- //Methods below are for subclass Cp834
- protected boolean doSBCS() {
- return true;
- }
}