--- a/jdk/src/share/classes/sun/nio/cs/ext/DoubleByteDecoder.java Thu Aug 02 15:37:22 2012 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,182 +0,0 @@
-/*
- * Copyright (c) 2002, 2005, 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.nio.cs.ext;
-
-import java.nio.ByteBuffer;
-import java.nio.CharBuffer;
-import java.nio.charset.Charset;
-import java.nio.charset.CharsetDecoder;
-import java.nio.charset.CoderResult;
-
-abstract class DoubleByteDecoder
- extends CharsetDecoder
-{
-
- private short index1[];
-
- /*
- * 2nd level index, provided by subclass
- * every string has 0x10*(end-start+1) characters.
- */
- private String index2[];
-
- protected int start;
- protected int end;
-
- protected static final char REPLACE_CHAR = '\uFFFD';
- protected char highSurrogate;
- protected char lowSurrogate;
-
- protected DoubleByteDecoder(Charset cs, short[] index1, String[] index2,
- int start, int end ) {
- super(cs, 0.5f, 1.0f);
- this.index1 = index1;
- this.index2 = index2;
- this.start = start;
- this.end = end;
- }
-
- private CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) {
- byte[] sa = src.array();
- int sp = src.arrayOffset() + src.position();
- int sl = src.arrayOffset() + src.limit();
- assert (sp <= sl);
- sp = (sp <= sl ? sp : sl);
- char[] da = dst.array();
- int dp = dst.arrayOffset() + dst.position();
- int dl = dst.arrayOffset() + dst.limit();
- assert (dp <= dl);
- dp = (dp <= dl ? dp : dl);
-
- try {
- while (sp < sl) {
- int b1, b2;
- b1 = sa[sp];
- int inputSize = 1;
- int outputSize = 1;
- highSurrogate = lowSurrogate = 0;
- char c = decodeSingle(b1);
- if (c == REPLACE_CHAR) {
- b1 &= 0xff;
- if (sl - sp < 2)
- return CoderResult.UNDERFLOW;
- b2 = sa[sp + 1] & 0xff;
- c = decodeDouble(b1, b2);
- inputSize = 2;
- if (c == REPLACE_CHAR)
- return CoderResult.unmappableForLength(inputSize);
- outputSize = (highSurrogate > 0) ? 2: 1;
- }
-
- if (dl - dp < outputSize)
- return CoderResult.OVERFLOW;
- if (outputSize == 2) {
- da[dp++] = highSurrogate;
- da[dp++] = lowSurrogate;
- } else {
- da[dp++] = c;
- }
- sp += inputSize;
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(sp - src.arrayOffset());
- dst.position(dp - dst.arrayOffset());
- }
- }
-
- private CoderResult decodeBufferLoop(ByteBuffer src, CharBuffer dst) {
- int mark = src.position();
- int inputSize = 0;
- int outputSize = 0;
- try {
- while (src.hasRemaining()) {
- int b1 = src.get();
- inputSize = 1;
- outputSize = 1;
- highSurrogate = lowSurrogate = 0;
-
- char c = decodeSingle(b1);
-
- if (c == REPLACE_CHAR) {
- if (src.remaining() < 1)
- return CoderResult.UNDERFLOW;
- b1 &= 0xff;
- int b2 = src.get() & 0xff;
- inputSize = 2;
-
- c = decodeDouble(b1, b2);
-
- if (c == REPLACE_CHAR)
- return CoderResult.unmappableForLength(2);
-
- outputSize = (highSurrogate > 0) ? 2: 1;
- }
- if (dst.remaining() < outputSize)
- return CoderResult.OVERFLOW;
- mark += inputSize;
-
- if (outputSize == 2) {
- dst.put(highSurrogate);
- dst.put(lowSurrogate);
- } else {
- dst.put(c);
- }
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(mark);
- }
- }
-
- protected CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) {
- if (src.hasArray() && dst.hasArray())
- return decodeArrayLoop(src, dst);
- else
- return decodeBufferLoop(src, dst);
- }
-
- /*
- * Can be changed by subclass
- */
- protected char decodeSingle(int b) {
- if (b >= 0)
- return (char) b;
- return REPLACE_CHAR;
- }
-
- protected char decodeDouble(int byte1, int byte2) {
- if (((byte1 < 0) || (byte1 > index1.length))
- || ((byte2 < start) || (byte2 > end)))
- return REPLACE_CHAR;
-
- int n = (index1[byte1] & 0xf) * (end - start + 1) + (byte2 - start);
- return index2[index1[byte1] >> 4].charAt(n);
- }
-}