--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/io/ByteToCharISCII91.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,233 @@
+/*
+ * Copyright 1999 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
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * 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.ISCII91;
+
+/*
+ * Copyright (c) 1998 International Business Machines.
+ * All Rights Reserved.
+ *
+ * Author : Sunanda Bera, C. Thirumalesh
+ * Last Modified : 23,November,1998
+ *
+ * Purpose : Defines class ByteToCharISCII91.
+ *
+ *
+ * Revision History
+ * ======== =======
+ *
+ * Date By Description
+ * ---- -- -----------
+ *
+ *
+ */
+
+/**
+ * Converter class. Converts between Unicode encoding and ISCII91 encoding.
+ * ISCII91 is the character encoding as defined in Indian Standard document
+ * IS 13194:1991 ( Indian Script Code for Information Interchange ).
+ *
+ * @see sun.io.ByteToCharConverter
+ */
+public class ByteToCharISCII91 extends ByteToCharConverter {
+
+ private static final char[] directMapTable = ISCII91.getDirectMapTable();
+
+ private static final char NUKTA_CHAR = '\u093c';
+ private static final char HALANT_CHAR = '\u094d';
+ private static final char ZWNJ_CHAR = '\u200c';
+ private static final char ZWJ_CHAR = '\u200d';
+ private static final char INVALID_CHAR = '\uffff';
+
+ private char contextChar = INVALID_CHAR;
+ private boolean needFlushing = false;
+
+/**
+ * Converts ISCII91 characters to Unicode.
+ * @see sun.io.ByteToCharConverter#convert
+ */
+ public int convert(byte input[], int inStart, int inEnd,
+ char output[], int outStart, int outEnd)
+ throws ConversionBufferFullException, UnknownCharacterException {
+ /*Rules:
+ * 1)ATR,EXT,following character to be replaced with '\ufffd'
+ * 2)Halant + Halant => '\u094d' (Virama) + '\u200c'(ZWNJ)
+ * 3)Halant + Nukta => '\u094d' (Virama) + '\u200d'(ZWJ)
+ */
+ charOff = outStart;
+ byteOff = inStart;
+ while (byteOff < inEnd) {
+ if (charOff >= outEnd) {
+ throw new ConversionBufferFullException();
+ }
+ int index = input[byteOff++];
+ index = ( index < 0 )? ( index + 255 ):index;
+ char currentChar = directMapTable[index];
+
+ // if the contextChar is either ATR || EXT set the output to '\ufffd'
+ if(contextChar == '\ufffd') {
+ output[charOff++] = '\ufffd';
+ contextChar = INVALID_CHAR;
+ needFlushing = false;
+ continue;
+ }
+
+ switch(currentChar) {
+ case '\u0901':
+ case '\u0907':
+ case '\u0908':
+ case '\u090b':
+ case '\u093f':
+ case '\u0940':
+ case '\u0943':
+ case '\u0964':
+ if(needFlushing) {
+ output[charOff++] = contextChar;
+ contextChar = currentChar;
+ continue;
+ }
+ contextChar = currentChar;
+ needFlushing = true;
+ continue;
+ case NUKTA_CHAR:
+ switch(contextChar) {
+ case '\u0901':
+ output[charOff] = '\u0950';
+ break;
+ case '\u0907':
+ output[charOff] = '\u090c';
+ break;
+ case '\u0908':
+ output[charOff] = '\u0961';
+ break;
+ case '\u090b':
+ output[charOff] = '\u0960';
+ break;
+ case '\u093f':
+ output[charOff] = '\u0962';
+ break;
+ case '\u0940':
+ output[charOff] = '\u0963';
+ break;
+ case '\u0943':
+ output[charOff] = '\u0944';
+ break;
+ case '\u0964':
+ output[charOff] = '\u093d';
+ break;
+ case HALANT_CHAR:
+ if(needFlushing) {
+ output[charOff++] = contextChar;
+ contextChar = currentChar;
+ continue;
+ }
+ output[charOff] = ZWJ_CHAR;
+ break;
+ default:
+ if(needFlushing) {
+ output[charOff++] = contextChar;
+ contextChar = currentChar;
+ continue;
+ }
+ output[charOff] = NUKTA_CHAR;
+ }
+ break;
+ case HALANT_CHAR:
+ if(needFlushing) {
+ output[charOff++] = contextChar;
+ contextChar = currentChar;
+ continue;
+ }
+ if(contextChar == HALANT_CHAR) {
+ output[charOff] = ZWNJ_CHAR;
+ break;
+ }
+ output[charOff] = HALANT_CHAR;
+ break;
+ case INVALID_CHAR:
+ if(needFlushing) {
+ output[charOff++] = contextChar;
+ contextChar = currentChar;
+ continue;
+ }
+ if(subMode) {
+ output[charOff] = subChars[0];
+ break;
+ } else {
+ contextChar = INVALID_CHAR;
+ throw new UnknownCharacterException();
+ }
+ default:
+ if(needFlushing) {
+ output[charOff++] = contextChar;
+ contextChar = currentChar;
+ continue;
+ }
+ output[charOff] = currentChar;
+ break;
+ }//end switch
+
+ contextChar = currentChar;
+ needFlushing = false;
+ charOff++;
+ }//end while
+ return charOff - outStart;
+ } //convert()
+
+/**
+ * @see sun.io.ByteToCharConverter#flush
+ */
+ public int flush( char[] output, int outStart, int outEnd )
+ throws MalformedInputException, ConversionBufferFullException
+ {
+ int charsWritten = 0;
+ //if the last char was not flushed, flush it!
+ if(needFlushing) {
+ output[outStart] = contextChar;
+ charsWritten = 1;
+ }
+ contextChar = INVALID_CHAR;
+ needFlushing = false;
+ byteOff = charOff = 0;
+ return charsWritten;
+ }//flush()
+/**
+ * Returns the character set id for the conversion.
+ */
+ public String getCharacterEncoding()
+ {
+ return "ISCII91";
+ }//getCharacterEncoding()
+/**
+ * @see sun.io.ByteToCharConverter#reset
+ */
+ public void reset()
+ {
+ byteOff = charOff = 0;
+ }//reset()
+
+}//end of class definition