419 lines
15 KiB
Java
419 lines
15 KiB
Java
/*
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* Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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*/
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetDecoder;
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import java.nio.charset.CharsetEncoder;
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import java.nio.charset.CoderResult;
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import sun.nio.cs.HistoricallyNamedCharset;
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import sun.nio.cs.Surrogate;
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public class EUC_JP_OLD
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extends Charset
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implements HistoricallyNamedCharset
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{
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public EUC_JP_OLD() {
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super("EUC-JP_OLD", null);
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}
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public String historicalName() {
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return "EUC_JP";
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}
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public boolean contains(Charset cs) {
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return ((cs.name().equals("US-ASCII"))
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|| (cs instanceof JIS_X_0201_OLD)
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|| (cs instanceof JIS_X_0208_OLD)
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|| (cs instanceof JIS_X_0212_OLD)
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|| (cs instanceof EUC_JP_OLD));
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}
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public CharsetDecoder newDecoder() {
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return new Decoder(this);
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}
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public CharsetEncoder newEncoder() {
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// Need to force the replacement byte to 0x3f
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// because JIS_X_0208_Encoder defines its own
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// alternative 2 byte substitution to permit it
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// to exist as a self-standing Encoder
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byte[] replacementBytes = { (byte)0x3f };
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return new Encoder(this).replaceWith(replacementBytes);
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}
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static class Decoder extends JIS_X_0208_Decoder {
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JIS_X_0201_OLD.Decoder decoderJ0201;
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JIS_X_0212_Decoder decoderJ0212;
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private static final short[] j0208Index1 =
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JIS_X_0208_Decoder.getIndex1();
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private static final String[] j0208Index2 =
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JIS_X_0208_Decoder.getIndex2();
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protected Decoder(Charset cs) {
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super(cs);
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decoderJ0201 = new JIS_X_0201_OLD.Decoder(cs);
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decoderJ0212 = new JIS_X_0212_Decoder(cs);
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start = 0xa1;
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end = 0xfe;
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}
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protected char decode0212(int byte1, int byte2) {
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return decoderJ0212.decodeDouble(byte1, byte2);
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}
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protected char decodeDouble(int byte1, int byte2) {
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if (byte1 == 0x8e) {
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return decoderJ0201.decode(byte2 - 256);
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}
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// Fix for bug 4121358 - similar fix for bug 4117820 put
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// into ByteToCharDoubleByte.getUnicode()
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if (((byte1 < 0) || (byte1 > getIndex1().length))
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|| ((byte2 < start) || (byte2 > end)))
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return REPLACE_CHAR;
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int n = (j0208Index1[byte1 - 0x80] & 0xf) * (end - start + 1)
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+ (byte2 - start);
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return j0208Index2[j0208Index1[byte1 - 0x80] >> 4].charAt(n);
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}
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private CoderResult decodeArrayLoop(ByteBuffer src,
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CharBuffer dst)
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{
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byte[] sa = src.array();
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int sp = src.arrayOffset() + src.position();
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int sl = src.arrayOffset() + src.limit();
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assert (sp <= sl);
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sp = (sp <= sl ? sp : sl);
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char[] da = dst.array();
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int dp = dst.arrayOffset() + dst.position();
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int dl = dst.arrayOffset() + dst.limit();
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assert (dp <= dl);
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dp = (dp <= dl ? dp : dl);
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int b1 = 0, b2 = 0;
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int inputSize = 0;
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char outputChar = REPLACE_CHAR; // U+FFFD;
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try {
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while (sp < sl) {
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b1 = sa[sp] & 0xff;
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inputSize = 1;
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if ((b1 & 0x80) == 0) {
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outputChar = (char)b1;
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}
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else { // Multibyte char
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if ((b1 & 0xff) == 0x8f) { // JIS0212
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if (sp + 3 > sl)
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return CoderResult.UNDERFLOW;
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b1 = sa[sp + 1] & 0xff;
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b2 = sa[sp + 2] & 0xff;
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inputSize += 2;
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outputChar = decode0212(b1-0x80, b2-0x80);
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} else {
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// JIS0208
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if (sp + 2 > sl)
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return CoderResult.UNDERFLOW;
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b2 = sa[sp + 1] & 0xff;
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inputSize++;
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outputChar = decodeDouble(b1, b2);
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}
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}
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if (outputChar == REPLACE_CHAR) { // can't be decoded
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return CoderResult.unmappableForLength(inputSize);
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}
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if (dp + 1 > dl)
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return CoderResult.OVERFLOW;
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da[dp++] = outputChar;
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sp += inputSize;
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}
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return CoderResult.UNDERFLOW;
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} finally {
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src.position(sp - src.arrayOffset());
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dst.position(dp - dst.arrayOffset());
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}
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}
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private CoderResult decodeBufferLoop(ByteBuffer src,
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CharBuffer dst)
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{
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int mark = src.position();
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int b1 = 0, b2 = 0;
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int inputSize = 0;
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char outputChar = REPLACE_CHAR; // U+FFFD;
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try {
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while (src.hasRemaining()) {
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b1 = src.get() & 0xff;
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inputSize = 1;
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if ((b1 & 0x80) == 0) {
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outputChar = (char)b1;
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} else { // Multibyte char
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if ((b1 & 0xff) == 0x8f) { // JIS0212
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if (src.remaining() < 2)
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return CoderResult.UNDERFLOW;
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b1 = src.get() & 0xff;
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b2 = src.get() & 0xff;
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inputSize += 2;
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outputChar = decode0212(b1-0x80, b2-0x80);
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} else {
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// JIS0208
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if (src.remaining() < 1)
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return CoderResult.UNDERFLOW;
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b2 = src.get() & 0xff;
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inputSize++;
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outputChar = decodeDouble(b1, b2);
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}
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}
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if (outputChar == REPLACE_CHAR) {
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return CoderResult.unmappableForLength(inputSize);
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}
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if (dst.remaining() < 1)
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return CoderResult.OVERFLOW;
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dst.put(outputChar);
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mark += inputSize;
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}
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return CoderResult.UNDERFLOW;
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} finally {
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src.position(mark);
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}
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}
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// Make some protected methods public for use by JISAutoDetect
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public CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) {
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if (src.hasArray() && dst.hasArray())
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return decodeArrayLoop(src, dst);
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else
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return decodeBufferLoop(src, dst);
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}
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public void implReset() {
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super.implReset();
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}
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public CoderResult implFlush(CharBuffer out) {
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return super.implFlush(out);
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}
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}
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static class Encoder extends JIS_X_0208_Encoder {
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JIS_X_0201_OLD.Encoder encoderJ0201;
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JIS_X_0212_Encoder encoderJ0212;
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private static final short[] j0208Index1 =
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JIS_X_0208_Encoder.getIndex1();
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private static final String[] j0208Index2 =
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JIS_X_0208_Encoder.getIndex2();
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private final Surrogate.Parser sgp = new Surrogate.Parser();
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protected Encoder(Charset cs) {
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super(cs, 3.0f, 3.0f);
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encoderJ0201 = new JIS_X_0201_OLD.Encoder(cs);
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encoderJ0212 = new JIS_X_0212_Encoder(cs);
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}
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public boolean canEncode(char c) {
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byte[] encodedBytes = new byte[3];
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if (encodeSingle(c, encodedBytes) == 0) { //doublebyte
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if (encodeDouble(c) == 0)
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return false;
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}
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return true;
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}
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protected int encodeSingle(char inputChar, byte[] outputByte) {
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byte b;
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if (inputChar == 0) {
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outputByte[0] = (byte)0;
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return 1;
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}
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if ((b = encoderJ0201.encode(inputChar)) == 0)
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return 0;
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if (b > 0 && b < 128) {
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outputByte[0] = b;
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return 1;
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}
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outputByte[0] = (byte)0x8e;
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outputByte[1] = b;
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return 2;
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}
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protected int encodeDouble(char ch) {
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int offset = j0208Index1[((ch & 0xff00) >> 8 )] << 8;
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int r = j0208Index2[offset >> 12].charAt((offset & 0xfff) +
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(ch & 0xff));
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if (r != 0)
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return r + 0x8080;
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r = encoderJ0212.encodeDouble(ch);
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if (r == 0)
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return r;
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return r + 0x8F8080;
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}
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private CoderResult encodeArrayLoop(CharBuffer src,
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ByteBuffer dst)
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{
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char[] sa = src.array();
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int sp = src.arrayOffset() + src.position();
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int sl = src.arrayOffset() + src.limit();
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assert (sp <= sl);
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sp = (sp <= sl ? sp : sl);
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byte[] da = dst.array();
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int dp = dst.arrayOffset() + dst.position();
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int dl = dst.arrayOffset() + dst.limit();
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assert (dp <= dl);
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dp = (dp <= dl ? dp : dl);
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int outputSize = 0;
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byte[] outputByte;
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int inputSize = 0; // Size of input
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byte[] tmpBuf = new byte[3];
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try {
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while (sp < sl) {
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outputByte = tmpBuf;
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char c = sa[sp];
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if (Character.isSurrogate(c)) {
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if (sgp.parse(c, sa, sp, sl) < 0)
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return sgp.error();
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return sgp.unmappableResult();
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}
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outputSize = encodeSingle(c, outputByte);
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if (outputSize == 0) { // DoubleByte
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int ncode = encodeDouble(c);
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if (ncode != 0 ) {
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if ((ncode & 0xFF0000) == 0) {
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outputByte[0] = (byte) ((ncode & 0xff00) >> 8);
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outputByte[1] = (byte) (ncode & 0xff);
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outputSize = 2;
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} else {
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outputByte[0] = (byte) 0x8f;
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outputByte[1] = (byte) ((ncode & 0xff00) >> 8);
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outputByte[2] = (byte) (ncode & 0xff);
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outputSize = 3;
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}
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} else {
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return CoderResult.unmappableForLength(1);
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}
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}
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if (dl - dp < outputSize)
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return CoderResult.OVERFLOW;
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// Put the byte in the output buffer
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for (int i = 0; i < outputSize; i++) {
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da[dp++] = outputByte[i];
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}
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sp++;
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}
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return CoderResult.UNDERFLOW;
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} finally {
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src.position(sp - src.arrayOffset());
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dst.position(dp - dst.arrayOffset());
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}
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}
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private CoderResult encodeBufferLoop(CharBuffer src,
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ByteBuffer dst)
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{
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int outputSize = 0;
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byte[] outputByte;
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int inputSize = 0; // Size of input
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byte[] tmpBuf = new byte[3];
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int mark = src.position();
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try {
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while (src.hasRemaining()) {
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outputByte = tmpBuf;
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char c = src.get();
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if (Character.isSurrogate(c)) {
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if (sgp.parse(c, src) < 0)
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return sgp.error();
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return sgp.unmappableResult();
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}
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outputSize = encodeSingle(c, outputByte);
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if (outputSize == 0) { // DoubleByte
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int ncode = encodeDouble(c);
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if (ncode != 0 ) {
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if ((ncode & 0xFF0000) == 0) {
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outputByte[0] = (byte) ((ncode & 0xff00) >> 8);
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outputByte[1] = (byte) (ncode & 0xff);
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outputSize = 2;
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} else {
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outputByte[0] = (byte) 0x8f;
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outputByte[1] = (byte) ((ncode & 0xff00) >> 8);
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outputByte[2] = (byte) (ncode & 0xff);
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outputSize = 3;
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}
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} else {
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return CoderResult.unmappableForLength(1);
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}
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}
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if (dst.remaining() < outputSize)
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return CoderResult.OVERFLOW;
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// Put the byte in the output buffer
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for (int i = 0; i < outputSize; i++) {
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dst.put(outputByte[i]);
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}
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mark++;
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}
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return CoderResult.UNDERFLOW;
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} finally {
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src.position(mark);
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}
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}
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protected CoderResult encodeLoop(CharBuffer src,
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ByteBuffer dst)
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{
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if (src.hasArray() && dst.hasArray())
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return encodeArrayLoop(src, dst);
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else
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return encodeBufferLoop(src, dst);
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}
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}
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}
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