--- a/jdk/src/jdk.charsets/share/classes/sun/nio/cs/ext/DoubleByte.java Thu Feb 19 11:24:03 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,929 +0,0 @@
-/*
- * Copyright (c) 2009, 2013, 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.CharsetEncoder;
-import java.nio.charset.CoderResult;
-import java.util.Arrays;
-import sun.nio.cs.Surrogate;
-import sun.nio.cs.ArrayDecoder;
-import sun.nio.cs.ArrayEncoder;
-import static sun.nio.cs.CharsetMapping.*;
-
-/*
- * Four types of "DoubleByte" charsets are implemented in this class
- * (1)DoubleByte
- * The "mostly widely used" multibyte charset, a combination of
- * a singlebyte character set (usually the ASCII charset) and a
- * doublebyte character set. The codepoint values of singlebyte
- * and doublebyte don't overlap. Microsoft's multibyte charsets
- * and IBM's "DBCS_ASCII" charsets, such as IBM1381, 942, 943,
- * 948, 949 and 950 are such charsets.
- *
- * (2)DoubleByte_EBCDIC
- * IBM EBCDIC Mix multibyte charset. Use SO and SI to shift (switch)
- * in and out between the singlebyte character set and doublebyte
- * character set.
- *
- * (3)DoubleByte_SIMPLE_EUC
- * It's a "simple" form of EUC encoding scheme, only have the
- * singlebyte character set G0 and one doublebyte character set
- * G1 are defined, G2 (with SS2) and G3 (with SS3) are not used.
- * So it is actually the same as the "typical" type (1) mentioned
- * above, except it return "malformed" for the SS2 and SS3 when
- * decoding.
- *
- * (4)DoubleByte ONLY
- * A "pure" doublebyte only character set. From implementation
- * point of view, this is the type (1) with "decodeSingle" always
- * returns unmappable.
- *
- * For simplicity, all implementations share the same decoding and
- * encoding data structure.
- *
- * Decoding:
- *
- * char[][] b2c;
- * char[] b2cSB;
- * int b2Min, b2Max
- *
- * public char decodeSingle(int b) {
- * return b2cSB.[b];
- * }
- *
- * public char decodeDouble(int b1, int b2) {
- * if (b2 < b2Min || b2 > b2Max)
- * return UNMAPPABLE_DECODING;
- * return b2c[b1][b2 - b2Min];
- * }
- *
- * (1)b2Min, b2Max are the corresponding min and max value of the
- * low-half of the double-byte.
- * (2)The high 8-bit/b1 of the double-byte are used to indexed into
- * b2c array.
- *
- * Encoding:
- *
- * char[] c2b;
- * char[] c2bIndex;
- *
- * public int encodeChar(char ch) {
- * return c2b[c2bIndex[ch >> 8] + (ch & 0xff)];
- * }
- *
- */
-
-public class DoubleByte {
-
- public final static char[] B2C_UNMAPPABLE;
- static {
- B2C_UNMAPPABLE = new char[0x100];
- Arrays.fill(B2C_UNMAPPABLE, UNMAPPABLE_DECODING);
- }
-
- public static class Decoder extends CharsetDecoder
- implements DelegatableDecoder, ArrayDecoder
- {
- final char[][] b2c;
- final char[] b2cSB;
- final int b2Min;
- final int b2Max;
-
- // for SimpleEUC override
- protected CoderResult crMalformedOrUnderFlow(int b) {
- return CoderResult.UNDERFLOW;
- }
-
- protected CoderResult crMalformedOrUnmappable(int b1, int b2) {
- if (b2c[b1] == B2C_UNMAPPABLE || // isNotLeadingByte(b1)
- b2c[b2] != B2C_UNMAPPABLE || // isLeadingByte(b2)
- decodeSingle(b2) != UNMAPPABLE_DECODING) { // isSingle(b2)
- return CoderResult.malformedForLength(1);
- }
- return CoderResult.unmappableForLength(2);
- }
-
- Decoder(Charset cs, float avgcpb, float maxcpb,
- char[][] b2c, char[] b2cSB,
- int b2Min, int b2Max) {
- super(cs, avgcpb, maxcpb);
- this.b2c = b2c;
- this.b2cSB = b2cSB;
- this.b2Min = b2Min;
- this.b2Max = b2Max;
- }
-
- Decoder(Charset cs, char[][] b2c, char[] b2cSB, int b2Min, int b2Max) {
- this(cs, 0.5f, 1.0f, b2c, b2cSB, b2Min, b2Max);
- }
-
- protected CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) {
- byte[] sa = src.array();
- int sp = src.arrayOffset() + src.position();
- int sl = src.arrayOffset() + src.limit();
-
- char[] da = dst.array();
- int dp = dst.arrayOffset() + dst.position();
- int dl = dst.arrayOffset() + dst.limit();
-
- try {
- while (sp < sl && dp < dl) {
- // inline the decodeSingle/Double() for better performance
- int inSize = 1;
- int b1 = sa[sp] & 0xff;
- char c = b2cSB[b1];
- if (c == UNMAPPABLE_DECODING) {
- if (sl - sp < 2)
- return crMalformedOrUnderFlow(b1);
- int b2 = sa[sp + 1] & 0xff;
- if (b2 < b2Min || b2 > b2Max ||
- (c = b2c[b1][b2 - b2Min]) == UNMAPPABLE_DECODING) {
- return crMalformedOrUnmappable(b1, b2);
- }
- inSize++;
- }
- da[dp++] = c;
- sp += inSize;
- }
- return (sp >= sl) ? CoderResult.UNDERFLOW
- : CoderResult.OVERFLOW;
- } finally {
- src.position(sp - src.arrayOffset());
- dst.position(dp - dst.arrayOffset());
- }
- }
-
- protected CoderResult decodeBufferLoop(ByteBuffer src, CharBuffer dst) {
- int mark = src.position();
- try {
-
- while (src.hasRemaining() && dst.hasRemaining()) {
- int b1 = src.get() & 0xff;
- char c = b2cSB[b1];
- int inSize = 1;
- if (c == UNMAPPABLE_DECODING) {
- if (src.remaining() < 1)
- return crMalformedOrUnderFlow(b1);
- int b2 = src.get() & 0xff;
- if (b2 < b2Min || b2 > b2Max ||
- (c = b2c[b1][b2 - b2Min]) == UNMAPPABLE_DECODING)
- return crMalformedOrUnmappable(b1, b2);
- inSize++;
- }
- dst.put(c);
- mark += inSize;
- }
- return src.hasRemaining()? CoderResult.OVERFLOW
- : CoderResult.UNDERFLOW;
- } finally {
- src.position(mark);
- }
- }
-
- // Make some protected methods public for use by JISAutoDetect
- public CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) {
- if (src.hasArray() && dst.hasArray())
- return decodeArrayLoop(src, dst);
- else
- return decodeBufferLoop(src, dst);
- }
-
- public int decode(byte[] src, int sp, int len, char[] dst) {
- int dp = 0;
- int sl = sp + len;
- char repl = replacement().charAt(0);
- while (sp < sl) {
- int b1 = src[sp++] & 0xff;
- char c = b2cSB[b1];
- if (c == UNMAPPABLE_DECODING) {
- if (sp < sl) {
- int b2 = src[sp++] & 0xff;
- if (b2 < b2Min || b2 > b2Max ||
- (c = b2c[b1][b2 - b2Min]) == UNMAPPABLE_DECODING) {
- if (b2c[b1] == B2C_UNMAPPABLE || // isNotLeadingByte
- b2c[b2] != B2C_UNMAPPABLE || // isLeadingByte
- decodeSingle(b2) != UNMAPPABLE_DECODING) {
- sp--;
- }
- }
- }
- if (c == UNMAPPABLE_DECODING) {
- c = repl;
- }
- }
- dst[dp++] = c;
- }
- return dp;
- }
-
- public void implReset() {
- super.implReset();
- }
-
- public CoderResult implFlush(CharBuffer out) {
- return super.implFlush(out);
- }
-
- // decode loops are not using decodeSingle/Double() for performance
- // reason.
- public char decodeSingle(int b) {
- return b2cSB[b];
- }
-
- public char decodeDouble(int b1, int b2) {
- if (b1 < 0 || b1 > b2c.length ||
- b2 < b2Min || b2 > b2Max)
- return UNMAPPABLE_DECODING;
- return b2c[b1][b2 - b2Min];
- }
- }
-
- // IBM_EBCDIC_DBCS
- public static class Decoder_EBCDIC extends Decoder {
- private static final int SBCS = 0;
- private static final int DBCS = 1;
- private static final int SO = 0x0e;
- private static final int SI = 0x0f;
- private int currentState;
-
- Decoder_EBCDIC(Charset cs,
- char[][] b2c, char[] b2cSB, int b2Min, int b2Max) {
- super(cs, b2c, b2cSB, b2Min, b2Max);
- }
-
- public void implReset() {
- currentState = SBCS;
- }
-
- // Check validity of dbcs ebcdic byte pair values
- //
- // First byte : 0x41 -- 0xFE
- // Second byte: 0x41 -- 0xFE
- // Doublebyte blank: 0x4040
- //
- // The validation implementation in "old" DBCS_IBM_EBCDIC and sun.io
- // as
- // if ((b1 != 0x40 || b2 != 0x40) &&
- // (b2 < 0x41 || b2 > 0xfe)) {...}
- // is not correct/complete (range check for b1)
- //
- private static boolean isDoubleByte(int b1, int b2) {
- return (0x41 <= b1 && b1 <= 0xfe && 0x41 <= b2 && b2 <= 0xfe)
- || (b1 == 0x40 && b2 == 0x40); // DBCS-HOST SPACE
- }
-
- protected CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) {
- byte[] sa = src.array();
- int sp = src.arrayOffset() + src.position();
- int sl = src.arrayOffset() + src.limit();
- char[] da = dst.array();
- int dp = dst.arrayOffset() + dst.position();
- int dl = dst.arrayOffset() + dst.limit();
-
- try {
- // don't check dp/dl together here, it's possible to
- // decdoe a SO/SI without space in output buffer.
- while (sp < sl) {
- int b1 = sa[sp] & 0xff;
- int inSize = 1;
- if (b1 == SO) { // Shift out
- if (currentState != SBCS)
- return CoderResult.malformedForLength(1);
- else
- currentState = DBCS;
- } else if (b1 == SI) {
- if (currentState != DBCS)
- return CoderResult.malformedForLength(1);
- else
- currentState = SBCS;
- } else {
- char c = UNMAPPABLE_DECODING;
- if (currentState == SBCS) {
- c = b2cSB[b1];
- if (c == UNMAPPABLE_DECODING)
- return CoderResult.unmappableForLength(1);
- } else {
- if (sl - sp < 2)
- return CoderResult.UNDERFLOW;
- int b2 = sa[sp + 1] & 0xff;
- if (b2 < b2Min || b2 > b2Max ||
- (c = b2c[b1][b2 - b2Min]) == UNMAPPABLE_DECODING) {
- if (!isDoubleByte(b1, b2))
- return CoderResult.malformedForLength(2);
- return CoderResult.unmappableForLength(2);
- }
- inSize++;
- }
- if (dl - dp < 1)
- return CoderResult.OVERFLOW;
-
- da[dp++] = c;
- }
- sp += inSize;
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(sp - src.arrayOffset());
- dst.position(dp - dst.arrayOffset());
- }
- }
-
- protected CoderResult decodeBufferLoop(ByteBuffer src, CharBuffer dst) {
- int mark = src.position();
- try {
- while (src.hasRemaining()) {
- int b1 = src.get() & 0xff;
- int inSize = 1;
- if (b1 == SO) { // Shift out
- if (currentState != SBCS)
- return CoderResult.malformedForLength(1);
- else
- currentState = DBCS;
- } else if (b1 == SI) {
- if (currentState != DBCS)
- return CoderResult.malformedForLength(1);
- else
- currentState = SBCS;
- } else {
- char c = UNMAPPABLE_DECODING;
- if (currentState == SBCS) {
- c = b2cSB[b1];
- if (c == UNMAPPABLE_DECODING)
- return CoderResult.unmappableForLength(1);
- } else {
- if (src.remaining() < 1)
- return CoderResult.UNDERFLOW;
- int b2 = src.get()&0xff;
- if (b2 < b2Min || b2 > b2Max ||
- (c = b2c[b1][b2 - b2Min]) == UNMAPPABLE_DECODING) {
- if (!isDoubleByte(b1, b2))
- return CoderResult.malformedForLength(2);
- return CoderResult.unmappableForLength(2);
- }
- inSize++;
- }
-
- if (dst.remaining() < 1)
- return CoderResult.OVERFLOW;
-
- dst.put(c);
- }
- mark += inSize;
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(mark);
- }
- }
-
- public int decode(byte[] src, int sp, int len, char[] dst) {
- int dp = 0;
- int sl = sp + len;
- currentState = SBCS;
- char repl = replacement().charAt(0);
- while (sp < sl) {
- int b1 = src[sp++] & 0xff;
- if (b1 == SO) { // Shift out
- if (currentState != SBCS)
- dst[dp++] = repl;
- else
- currentState = DBCS;
- } else if (b1 == SI) {
- if (currentState != DBCS)
- dst[dp++] = repl;
- else
- currentState = SBCS;
- } else {
- char c = UNMAPPABLE_DECODING;
- if (currentState == SBCS) {
- c = b2cSB[b1];
- if (c == UNMAPPABLE_DECODING)
- c = repl;
- } else {
- if (sl == sp) {
- c = repl;
- } else {
- int b2 = src[sp++] & 0xff;
- if (b2 < b2Min || b2 > b2Max ||
- (c = b2c[b1][b2 - b2Min]) == UNMAPPABLE_DECODING) {
- c = repl;
- }
- }
- }
- dst[dp++] = c;
- }
- }
- return dp;
- }
- }
-
- // DBCS_ONLY
- public static class Decoder_DBCSONLY extends Decoder {
- static final char[] b2cSB_UNMAPPABLE;
- static {
- b2cSB_UNMAPPABLE = new char[0x100];
- Arrays.fill(b2cSB_UNMAPPABLE, UNMAPPABLE_DECODING);
- }
- Decoder_DBCSONLY(Charset cs, char[][] b2c, char[] b2cSB, int b2Min, int b2Max) {
- super(cs, 0.5f, 1.0f, b2c, b2cSB_UNMAPPABLE, b2Min, b2Max);
- }
- }
-
- // EUC_SIMPLE
- // The only thing we need to "override" is to check SS2/SS3 and
- // return "malformed" if found
- public static class Decoder_EUC_SIM extends Decoder {
- private final int SS2 = 0x8E;
- private final int SS3 = 0x8F;
-
- Decoder_EUC_SIM(Charset cs,
- char[][] b2c, char[] b2cSB, int b2Min, int b2Max) {
- super(cs, b2c, b2cSB, b2Min, b2Max);
- }
-
- // No support provided for G2/G3 for SimpleEUC
- protected CoderResult crMalformedOrUnderFlow(int b) {
- if (b == SS2 || b == SS3 )
- return CoderResult.malformedForLength(1);
- return CoderResult.UNDERFLOW;
- }
-
- protected CoderResult crMalformedOrUnmappable(int b1, int b2) {
- if (b1 == SS2 || b1 == SS3 )
- return CoderResult.malformedForLength(1);
- return CoderResult.unmappableForLength(2);
- }
-
- public int decode(byte[] src, int sp, int len, char[] dst) {
- int dp = 0;
- int sl = sp + len;
- char repl = replacement().charAt(0);
- while (sp < sl) {
- int b1 = src[sp++] & 0xff;
- char c = b2cSB[b1];
- if (c == UNMAPPABLE_DECODING) {
- if (sp < sl) {
- int b2 = src[sp++] & 0xff;
- if (b2 < b2Min || b2 > b2Max ||
- (c = b2c[b1][b2 - b2Min]) == UNMAPPABLE_DECODING) {
- if (b1 == SS2 || b1 == SS3) {
- sp--;
- }
- c = repl;
- }
- } else {
- c = repl;
- }
- }
- dst[dp++] = c;
- }
- return dp;
- }
- }
-
- public static class Encoder extends CharsetEncoder
- implements ArrayEncoder
- {
- final int MAX_SINGLEBYTE = 0xff;
- private final char[] c2b;
- private final char[] c2bIndex;
- Surrogate.Parser sgp;
-
- protected Encoder(Charset cs, char[] c2b, char[] c2bIndex) {
- super(cs, 2.0f, 2.0f);
- this.c2b = c2b;
- this.c2bIndex = c2bIndex;
- }
-
- Encoder(Charset cs, float avg, float max, byte[] repl, char[] c2b, char[] c2bIndex) {
- super(cs, avg, max, repl);
- this.c2b = c2b;
- this.c2bIndex = c2bIndex;
- }
-
- public boolean canEncode(char c) {
- return encodeChar(c) != UNMAPPABLE_ENCODING;
- }
-
- Surrogate.Parser sgp() {
- if (sgp == null)
- sgp = new Surrogate.Parser();
- return sgp;
- }
-
- protected CoderResult encodeArrayLoop(CharBuffer src, ByteBuffer dst) {
- char[] sa = src.array();
- int sp = src.arrayOffset() + src.position();
- int sl = src.arrayOffset() + src.limit();
-
- byte[] da = dst.array();
- int dp = dst.arrayOffset() + dst.position();
- int dl = dst.arrayOffset() + dst.limit();
-
- try {
- while (sp < sl) {
- char c = sa[sp];
- int bb = encodeChar(c);
- if (bb == UNMAPPABLE_ENCODING) {
- if (Character.isSurrogate(c)) {
- if (sgp().parse(c, sa, sp, sl) < 0)
- return sgp.error();
- return sgp.unmappableResult();
- }
- return CoderResult.unmappableForLength(1);
- }
-
- if (bb > MAX_SINGLEBYTE) { // DoubleByte
- if (dl - dp < 2)
- return CoderResult.OVERFLOW;
- da[dp++] = (byte)(bb >> 8);
- da[dp++] = (byte)bb;
- } else { // SingleByte
- if (dl - dp < 1)
- return CoderResult.OVERFLOW;
- da[dp++] = (byte)bb;
- }
-
- sp++;
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(sp - src.arrayOffset());
- dst.position(dp - dst.arrayOffset());
- }
- }
-
- protected CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
- int mark = src.position();
- try {
- while (src.hasRemaining()) {
- char c = src.get();
- int bb = encodeChar(c);
- if (bb == UNMAPPABLE_ENCODING) {
- if (Character.isSurrogate(c)) {
- if (sgp().parse(c, src) < 0)
- return sgp.error();
- return sgp.unmappableResult();
- }
- return CoderResult.unmappableForLength(1);
- }
- if (bb > MAX_SINGLEBYTE) { // DoubleByte
- if (dst.remaining() < 2)
- return CoderResult.OVERFLOW;
- dst.put((byte)(bb >> 8));
- dst.put((byte)(bb));
- } else {
- if (dst.remaining() < 1)
- return CoderResult.OVERFLOW;
- dst.put((byte)bb);
- }
- mark++;
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(mark);
- }
- }
-
- protected CoderResult encodeLoop(CharBuffer src, ByteBuffer dst) {
- if (src.hasArray() && dst.hasArray())
- return encodeArrayLoop(src, dst);
- else
- return encodeBufferLoop(src, dst);
- }
-
- protected byte[] repl = replacement();
- protected void implReplaceWith(byte[] newReplacement) {
- repl = newReplacement;
- }
-
- public int encode(char[] src, int sp, int len, byte[] dst) {
- int dp = 0;
- int sl = sp + len;
- int dl = dst.length;
- while (sp < sl) {
- char c = src[sp++];
- int bb = encodeChar(c);
- if (bb == UNMAPPABLE_ENCODING) {
- if (Character.isHighSurrogate(c) && sp < sl &&
- Character.isLowSurrogate(src[sp])) {
- sp++;
- }
- dst[dp++] = repl[0];
- if (repl.length > 1)
- dst[dp++] = repl[1];
- continue;
- } //else
- if (bb > MAX_SINGLEBYTE) { // DoubleByte
- dst[dp++] = (byte)(bb >> 8);
- dst[dp++] = (byte)bb;
- } else { // SingleByte
- dst[dp++] = (byte)bb;
- }
-
- }
- return dp;
- }
-
- public int encodeChar(char ch) {
- return c2b[c2bIndex[ch >> 8] + (ch & 0xff)];
- }
-
- // init the c2b and c2bIndex tables from b2c.
- static void initC2B(String[] b2c, String b2cSB, String b2cNR, String c2bNR,
- int b2Min, int b2Max,
- char[] c2b, char[] c2bIndex)
- {
- Arrays.fill(c2b, (char)UNMAPPABLE_ENCODING);
- int off = 0x100;
-
- char[][] b2c_ca = new char[b2c.length][];
- char[] b2cSB_ca = null;
- if (b2cSB != null)
- b2cSB_ca = b2cSB.toCharArray();
-
- for (int i = 0; i < b2c.length; i++) {
- if (b2c[i] == null)
- continue;
- b2c_ca[i] = b2c[i].toCharArray();
- }
-
- if (b2cNR != null) {
- int j = 0;
- while (j < b2cNR.length()) {
- char b = b2cNR.charAt(j++);
- char c = b2cNR.charAt(j++);
- if (b < 0x100 && b2cSB_ca != null) {
- if (b2cSB_ca[b] == c)
- b2cSB_ca[b] = UNMAPPABLE_DECODING;
- } else {
- if (b2c_ca[b >> 8][(b & 0xff) - b2Min] == c)
- b2c_ca[b >> 8][(b & 0xff) - b2Min] = UNMAPPABLE_DECODING;
- }
- }
- }
-
- if (b2cSB_ca != null) { // SingleByte
- for (int b = 0; b < b2cSB_ca.length; b++) {
- char c = b2cSB_ca[b];
- if (c == UNMAPPABLE_DECODING)
- continue;
- int index = c2bIndex[c >> 8];
- if (index == 0) {
- index = off;
- off += 0x100;
- c2bIndex[c >> 8] = (char)index;
- }
- c2b[index + (c & 0xff)] = (char)b;
- }
- }
-
- for (int b1 = 0; b1 < b2c.length; b1++) { // DoubleByte
- char[] db = b2c_ca[b1];
- if (db == null)
- continue;
- for (int b2 = b2Min; b2 <= b2Max; b2++) {
- char c = db[b2 - b2Min];
- if (c == UNMAPPABLE_DECODING)
- continue;
- int index = c2bIndex[c >> 8];
- if (index == 0) {
- index = off;
- off += 0x100;
- c2bIndex[c >> 8] = (char)index;
- }
- c2b[index + (c & 0xff)] = (char)((b1 << 8) | b2);
- }
- }
-
- if (c2bNR != null) {
- // add c->b only nr entries
- for (int i = 0; i < c2bNR.length(); i += 2) {
- char b = c2bNR.charAt(i);
- char c = c2bNR.charAt(i + 1);
- int index = (c >> 8);
- if (c2bIndex[index] == 0) {
- c2bIndex[index] = (char)off;
- off += 0x100;
- }
- index = c2bIndex[index] + (c & 0xff);
- c2b[index] = b;
- }
- }
- }
- }
-
- public static class Encoder_DBCSONLY extends Encoder {
- Encoder_DBCSONLY(Charset cs, byte[] repl,
- char[] c2b, char[] c2bIndex) {
- super(cs, 2.0f, 2.0f, repl, c2b, c2bIndex);
- }
-
- public int encodeChar(char ch) {
- int bb = super.encodeChar(ch);
- if (bb <= MAX_SINGLEBYTE)
- return UNMAPPABLE_ENCODING;
- return bb;
- }
- }
-
-
-
- public static class Encoder_EBCDIC extends Encoder {
- static final int SBCS = 0;
- static final int DBCS = 1;
- static final byte SO = 0x0e;
- static final byte SI = 0x0f;
-
- protected int currentState = SBCS;
-
- Encoder_EBCDIC(Charset cs, char[] c2b, char[] c2bIndex) {
- super(cs, 4.0f, 5.0f, new byte[] {(byte)0x6f}, c2b, c2bIndex);
- }
-
- protected void implReset() {
- currentState = SBCS;
- }
-
- protected CoderResult implFlush(ByteBuffer out) {
- if (currentState == DBCS) {
- if (out.remaining() < 1)
- return CoderResult.OVERFLOW;
- out.put(SI);
- }
- implReset();
- return CoderResult.UNDERFLOW;
- }
-
- protected CoderResult encodeArrayLoop(CharBuffer src, ByteBuffer dst) {
- char[] sa = src.array();
- int sp = src.arrayOffset() + src.position();
- int sl = src.arrayOffset() + src.limit();
- byte[] da = dst.array();
- int dp = dst.arrayOffset() + dst.position();
- int dl = dst.arrayOffset() + dst.limit();
-
- try {
- while (sp < sl) {
- char c = sa[sp];
- int bb = encodeChar(c);
- if (bb == UNMAPPABLE_ENCODING) {
- if (Character.isSurrogate(c)) {
- if (sgp().parse(c, sa, sp, sl) < 0)
- return sgp.error();
- return sgp.unmappableResult();
- }
- return CoderResult.unmappableForLength(1);
- }
- if (bb > MAX_SINGLEBYTE) { // DoubleByte
- if (currentState == SBCS) {
- if (dl - dp < 1)
- return CoderResult.OVERFLOW;
- currentState = DBCS;
- da[dp++] = SO;
- }
- if (dl - dp < 2)
- return CoderResult.OVERFLOW;
- da[dp++] = (byte)(bb >> 8);
- da[dp++] = (byte)bb;
- } else { // SingleByte
- if (currentState == DBCS) {
- if (dl - dp < 1)
- return CoderResult.OVERFLOW;
- currentState = SBCS;
- da[dp++] = SI;
- }
- if (dl - dp < 1)
- return CoderResult.OVERFLOW;
- da[dp++] = (byte)bb;
-
- }
- sp++;
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(sp - src.arrayOffset());
- dst.position(dp - dst.arrayOffset());
- }
- }
-
- protected CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) {
- int mark = src.position();
- try {
- while (src.hasRemaining()) {
- char c = src.get();
- int bb = encodeChar(c);
- if (bb == UNMAPPABLE_ENCODING) {
- if (Character.isSurrogate(c)) {
- if (sgp().parse(c, src) < 0)
- return sgp.error();
- return sgp.unmappableResult();
- }
- return CoderResult.unmappableForLength(1);
- }
- if (bb > MAX_SINGLEBYTE) { // DoubleByte
- if (currentState == SBCS) {
- if (dst.remaining() < 1)
- return CoderResult.OVERFLOW;
- currentState = DBCS;
- dst.put(SO);
- }
- if (dst.remaining() < 2)
- return CoderResult.OVERFLOW;
- dst.put((byte)(bb >> 8));
- dst.put((byte)(bb));
- } else { // Single-byte
- if (currentState == DBCS) {
- if (dst.remaining() < 1)
- return CoderResult.OVERFLOW;
- currentState = SBCS;
- dst.put(SI);
- }
- if (dst.remaining() < 1)
- return CoderResult.OVERFLOW;
- dst.put((byte)bb);
- }
- mark++;
- }
- return CoderResult.UNDERFLOW;
- } finally {
- src.position(mark);
- }
- }
-
- public int encode(char[] src, int sp, int len, byte[] dst) {
- int dp = 0;
- int sl = sp + len;
- while (sp < sl) {
- char c = src[sp++];
- int bb = encodeChar(c);
-
- if (bb == UNMAPPABLE_ENCODING) {
- if (Character.isHighSurrogate(c) && sp < sl &&
- Character.isLowSurrogate(src[sp])) {
- sp++;
- }
- dst[dp++] = repl[0];
- if (repl.length > 1)
- dst[dp++] = repl[1];
- continue;
- } //else
- if (bb > MAX_SINGLEBYTE) { // DoubleByte
- if (currentState == SBCS) {
- currentState = DBCS;
- dst[dp++] = SO;
- }
- dst[dp++] = (byte)(bb >> 8);
- dst[dp++] = (byte)bb;
- } else { // SingleByte
- if (currentState == DBCS) {
- currentState = SBCS;
- dst[dp++] = SI;
- }
- dst[dp++] = (byte)bb;
- }
- }
-
- if (currentState == DBCS) {
- currentState = SBCS;
- dst[dp++] = SI;
- }
- return dp;
- }
- }
-
- // EUC_SIMPLE
- public static class Encoder_EUC_SIM extends Encoder {
- Encoder_EUC_SIM(Charset cs, char[] c2b, char[] c2bIndex) {
- super(cs, c2b, c2bIndex);
- }
- }
-
-}