1 /*

     2  * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package $PACKAGE$;

    27 

    28 import java.nio.ByteBuffer;

    29 import java.nio.CharBuffer;

    30 import java.nio.charset.Charset;

    31 import java.nio.charset.CharsetDecoder;

    32 import java.nio.charset.CharsetEncoder;

    33 import java.nio.charset.CoderResult;

    34 import sun.nio.cs.HistoricallyNamedCharset;

    35 import sun.nio.cs.DelegatableDecoder;

    36 import sun.nio.cs.DoubleByte;

    37 import sun.nio.cs.Surrogate;

    38 import sun.nio.cs.SingleByte;

    39 import sun.nio.cs.*;

    40 import static sun.nio.cs.CharsetMapping.*;

    41 

    42 public class IBM29626C

    43     extends Charset

    44     implements HistoricallyNamedCharset

    45 {

    46     public IBM29626C() {

    47         super("x-IBM29626C",  $ALIASES$);

    48     }

    49 

    50     public String historicalName() {

    51         return "Cp29626C";

    52     }

    53 

    54     public boolean contains(Charset cs) {

    55         return ((cs.name().equals("US-ASCII"))

    56                 || (cs instanceof IBM29626C));

    57     }

    58 

    59     public CharsetDecoder newDecoder() {

    60         return new Decoder(this);

    61     }

    62 

    63     public CharsetEncoder newEncoder() {

    64         return new Encoder(this);

    65     }

    66 

    67     static class Decoder extends CharsetDecoder

    68         implements DelegatableDecoder {

    69 

    70         final static SingleByte.Decoder DEC0201 =

    71             (SingleByte.Decoder)new JIS_X_0201().newDecoder();

    72 

    73         final static DoubleByte.Decoder DEC0208 =

    74             (DoubleByte.Decoder)new JIS_X_0208().newDecoder();

    75 

    76         final static DoubleByte.Decoder DEC0212 =

    77             (DoubleByte.Decoder)new JIS_X_0212().newDecoder();

    78 

    79         final static DoubleByte.Encoder ibm943 =

    80             (DoubleByte.Encoder)new IBM943().newEncoder();

    81 

    82         private final SingleByte.Decoder dec0201;

    83         private final DoubleByte.Decoder dec0208;

    84         private final DoubleByte.Decoder dec0212;

    85 

    86         private final String G2_b =

    87             "\uA1F1\uA1F2\uA2CC\uADA1\uADA2\uADA3\uADA4\uADA5\uADA6\uADA7"+

    88             "\uADA8\uADA9\uADAA\uADAB\uADAC\uADAD\uADAE\uADAF\uADB0\uADB1"+

    89             "\uADB2\uADB3\uADB4\uADB5\uADB6\uADB7\uADB8\uADB9\uADBA\uADBB"+

    90             "\uADBC\uADBD\uADBE\uADC0\uADC1\uADC2\uADC3\uADC4\uADC5\uADC6"+

    91             "\uADC7\uADC8\uADC9\uADCA\uADCB\uADCC\uADCD\uADCE\uADCF\uADD0"+

    92             "\uADD1\uADD2\uADD3\uADD4\uADD5\uADD6\uADDF\uADE0\uADE1\uADE2"+

    93             "\uADE3\uADE4\uADE5\uADE6\uADE7\uADE8\uADE9\uADEA\uADEB\uADEC"+

    94             "\uADED\uADEE\uADEF\uADF0\uADF1\uADF2\uADF3\uADF4\uADF5\uADF6"+

    95             "\uADF7\uADF8\uADF9\uADFA\uADFB\uADFC";

    96 

    97         private final String G2_c =

    98             "\uFFE0\uFFE1\uFFE2\u2460\u2461\u2462\u2463\u2464\u2465\u2466"+

    99             "\u2467\u2468\u2469\u246A\u246B\u246C\u246D\u246E\u246F\u2470"+

   100             "\u2471\u2472\u2473\u2160\u2161\u2162\u2163\u2164\u2165\u2166"+

   101             "\u2167\u2168\u2169\u3349\u3314\u3322\u334D\u3318\u3327\u3303"+

   102             "\u3336\u3351\u3357\u330D\u3326\u3323\u332B\u334A\u333B\u339C"+

   103             "\u339D\u339E\u338E\u338F\u33C4\u33A1\u337B\u301D\u301F\u2116"+

   104             "\u33CD\u2121\u32A4\u32A5\u32A6\u32A7\u32A8\u3231\u3232\u3239"+

   105             "\u337E\u337D\u337C\u2252\u2261\u222B\u222E\u2211\u221A\u22A5"+

   106             "\u2220\u221F\u22BF\u2235\u2229\u222A";

   107 

   108         private final String G3_b =

   109             "\uF3B8\uF3B9\uF3AB\uF3AC\uF3AD\uF3AE\uF3AF\uF3B0\uF3B1\uF3B2"+

   110             "\uF3B3\uF3B4\uF3A1\uF3A2\uF3A3\uF3A4\uF3A5\uF3A6\uF3A7\uF3A8"+

   111             "\uF3A9\uF3AA\uF3B7\uF3B8\uF4A2\uF4A3\uF4A4\uF4A5\uF4A6\uF4A8"+

   112             "\uF4A9\uF4AC\uF4AE\uF4AF\uF4B0\uF4B2\uF4B3\uF4B4\uF4B5\uF4B6"+

   113             "\uF4B7\uF4BA\uF4BD\uF4BE\uF4C0\uF4BF\uF4C2\uF4A1\uF4C6\uF4C7"+

   114             "\uF4C8\uF4CB\uF4D0\uF4D4\uF4D5\uF4D7\uF4D9\uF4DC\uF4DF\uF4E0"+

   115             "\uF4E1\uF4E5\uF4E7\uF4EA\uF4ED\uF4EE\uF4EF\uF4F4\uF4F5\uF4F6"+

   116             "\uF4F8\uF3B8\uF4B9\uF4EB\uF4A7\uF4AA\uF4AB\uF4B1\uF4B8\uF4BB"+

   117             "\uF4BC\uF4C4\uF4C5\uF4C9\uF4CC\uF4CD\uF4CE\uF4CF\uF4D1\uF4D3"+

   118             "\uF4D6\uF4D8\uF4DA\uF4DB\uF4DE\uF4E2\uF4E3\uF4E4\uF4E6\uF4E8"+

   119             "\uF4E9\uF4EC\uF4F1\uF4F2\uF4F3\uF4F7\uF3B6\uF3B5";

   120 

   121         private final String G3_c =

   122             "\u2116\u2121\u2160\u2161\u2162\u2163\u2164\u2165\u2166\u2167"+

   123             "\u2168\u2169\u2170\u2171\u2172\u2173\u2174\u2175\u2176\u2177"+

   124             "\u2178\u2179\u3231\u00A6\u4EFC\u50F4\u51EC\u5307\u5324\u548A"+

   125             "\u5759\u589E\u5BEC\u5CF5\u5D53\u5FB7\u6085\u6120\u654E\u663B"+

   126             "\u6665\u6801\u6A6B\u6AE2\u6DF2\u6DF8\u7028\u70BB\u7501\u7682"+

   127             "\u769E\u7930\u7AE7\u7DA0\u7DD6\u8362\u85B0\u8807\u8B7F\u8CF4"+

   128             "\u8D76\u90DE\u9115\u9592\u973B\u974D\u9751\u999E\u9AD9\u9B72"+

   129             "\u9ED1\uF86F\uF929\uF9DC\uFA0E\uFA0F\uFA10\uFA11\uFA12\uFA13"+

   130             "\uFA14\uFA15\uFA16\uFA17\uFA18\uFA19\uFA1A\uFA1B\uFA1C\uFA1D"+

   131             "\uFA1E\uFA1F\uFA20\uFA21\uFA22\uFA23\uFA24\uFA25\uFA26\uFA27"+

   132             "\uFA28\uFA29\uFA2A\uFA2B\uFA2C\uFA2D\uFF02\uFF07";

   133 

   134         protected Decoder(Charset cs) {

   135             this(cs, 0.5f, 1.0f, DEC0201, DEC0208, DEC0212);

   136         }

   137 

   138         protected Decoder(Charset cs, float avgCpb, float maxCpb,

   139                           SingleByte.Decoder dec0201,

   140                           DoubleByte.Decoder dec0208,

   141                           DoubleByte.Decoder dec0212) {

   142             super(cs, avgCpb, maxCpb);

   143             this.dec0201 = dec0201;

   144             this.dec0208 = dec0208;

   145             this.dec0212 = dec0212;

   146         }

   147 

   148 

   149         protected char decodeSingle(int b) {

   150             if (b < 0x8e)

   151                 return (char) b;

   152             if (b < 0x90)

   153                 return UNMAPPABLE_DECODING;

   154             if (b < 0xa0)

   155                 return (char) b;

   156             return UNMAPPABLE_DECODING;

   157         }

   158 

   159         protected char decodeUDC(int byte1, int byte2, int offset) {

   160             if ((byte1 >= 0xf5 && byte1 <= 0xfe)

   161                 && (byte2 >= 0xa1 && byte2 <= 0xfe)) {

   162                 return (char)((byte1 - 0xf5) * 94 + (byte2 - 0xa1) + offset);

   163             }

   164             return UNMAPPABLE_DECODING;

   165         }

   166 

   167         final static String g1_c = "\u00a2\u00a3\u00ac\\\u007e";

   168 

   169         protected char decodeDouble(int byte1, int byte2) {

   170             if (byte1 == 0x8e) {

   171                 if (byte2 < 0x80)

   172                     return UNMAPPABLE_DECODING;

   173                 char c = dec0201.decode((byte)byte2);

   174                 if (byte2 >= 0xe0 && byte2 <= 0xe4)

   175                     c = g1_c.charAt(byte2 - 0xe0);

   176                 return c;

   177             }

   178             if ((byte1 >= 0xa1 && byte1 <= 0xfe)

   179                 && (byte2 >= 0xa1 && byte2 <= 0xfe)) {

   180                 char c = (char)((byte1 << 8) + byte2);

   181                 int idx = G2_b.indexOf(c);

   182                 if (idx > -1)

   183                     return G2_c.charAt(idx);

   184             }

   185             char ch = dec0208.decodeDouble(byte1 - 0x80, byte2 - 0x80);

   186             if (ch == UNMAPPABLE_DECODING)

   187                 ch = decodeUDC(byte1, byte2, 0xe000);

   188             return ch;

   189         }

   190 

   191         protected char decodeDoubleG3(int byte1, int byte2) {

   192             if ((byte1 >= 0xa1 && byte1 <= 0xfe)

   193                 && (byte2 >= 0xa1 && byte2 <= 0xfe)) {

   194                 char c = (char)((byte1 << 8) + byte2);

   195                 int idx = G3_b.indexOf(c);

   196                 if (idx > -1)

   197                     return G3_c.charAt(idx);

   198             }

   199             char ch = dec0212.decodeDouble(byte1 - 0x80, byte2 - 0x80);

   200             if (ch == '\u2116')

   201                 ch = UNMAPPABLE_DECODING;

   202             if (ch != UNMAPPABLE_DECODING)

   203                 ch =  ibm943.canEncode(ch) ? ch : UNMAPPABLE_DECODING;

   204             if (ch == UNMAPPABLE_DECODING)

   205                 ch = decodeUDC(byte1, byte2, 0xe3ac);

   206             return ch;

   207         }

   208 

   209         private CoderResult decodeArrayLoop(ByteBuffer src,

   210                                             CharBuffer dst)

   211         {

   212             byte[] sa = src.array();

   213             int sp = src.arrayOffset() + src.position();

   214             int sl = src.arrayOffset() + src.limit();

   215             assert (sp <= sl);

   216             sp = (sp <= sl ? sp : sl);

   217 

   218             char[] da = dst.array();

   219             int dp = dst.arrayOffset() + dst.position();

   220             int dl = dst.arrayOffset() + dst.limit();

   221             assert (dp <= dl);

   222             dp = (dp <= dl ? dp : dl);

   223 

   224             int b1 = 0, b2 = 0;

   225             int inputSize = 0;

   226             char outputChar = UNMAPPABLE_DECODING;

   227             try {

   228                 while (sp < sl) {

   229                     b1 = sa[sp] & 0xff;

   230                     inputSize = 1;

   231 

   232                     outputChar = decodeSingle(b1);

   233                     if (outputChar == UNMAPPABLE_DECODING) { // Multibyte char

   234                         if (b1 == 0x8f) {           // JIS0212

   235                             if (sp + 3 > sl)

   236                                return CoderResult.UNDERFLOW;

   237                             b1 = sa[sp + 1] & 0xff;

   238                             b2 = sa[sp + 2] & 0xff;

   239                             inputSize += 2;

   240                             outputChar = decodeDoubleG3(b1, b2);

   241                         } else {                     // JIS0201, JIS0208

   242                             if (sp + 2 > sl)

   243                                return CoderResult.UNDERFLOW;

   244                             b2 = sa[sp + 1] & 0xff;

   245                             inputSize++;

   246                             outputChar = decodeDouble(b1, b2);

   247                         }

   248                     }

   249                     if (outputChar == UNMAPPABLE_DECODING) { // can't be decoded

   250                         return CoderResult.unmappableForLength(inputSize);

   251                     }

   252                     if (dp + 1 > dl)

   253                         return CoderResult.OVERFLOW;

   254                     da[dp++] = outputChar;

   255                     sp += inputSize;

   256                 }

   257                 return CoderResult.UNDERFLOW;

   258             } finally {

   259                 src.position(sp - src.arrayOffset());

   260                 dst.position(dp - dst.arrayOffset());

   261             }

   262         }

   263 

   264         private CoderResult decodeBufferLoop(ByteBuffer src,

   265                                              CharBuffer dst)

   266         {

   267             int mark = src.position();

   268             int b1 = 0, b2 = 0;

   269             int inputSize = 0;

   270             char outputChar = UNMAPPABLE_DECODING;

   271 

   272             try {

   273                 while (src.hasRemaining()) {

   274                     b1 = src.get() & 0xff;

   275                     inputSize = 1;

   276                     outputChar = decodeSingle(b1);

   277                     if (outputChar == UNMAPPABLE_DECODING) { // Multibyte char

   278                         if (b1 == 0x8f) {   // JIS0212

   279                             if (src.remaining() < 2)

   280                                return CoderResult.UNDERFLOW;

   281                             b1 = src.get() & 0xff;

   282                             b2 = src.get() & 0xff;

   283                             inputSize += 2;

   284                             outputChar = decodeDoubleG3(b1, b2);

   285                         } else {                     // JIS0201 JIS0208

   286                             if (src.remaining() < 1)

   287                                return CoderResult.UNDERFLOW;

   288                             b2 = src.get() & 0xff;

   289                             inputSize++;

   290                             outputChar = decodeDouble(b1, b2);

   291                         }

   292                     }

   293                     if (outputChar == UNMAPPABLE_DECODING) {

   294                         return CoderResult.unmappableForLength(inputSize);

   295                     }

   296                 if (dst.remaining() < 1)

   297                     return CoderResult.OVERFLOW;

   298                 dst.put(outputChar);

   299                 mark += inputSize;

   300                 }

   301                 return CoderResult.UNDERFLOW;

   302             } finally {

   303                 src.position(mark);

   304             }

   305         }

   306 

   307         // Make some protected methods public for use by JISAutoDetect

   308         public CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) {

   309             if (src.hasArray() && dst.hasArray())

   310                 return decodeArrayLoop(src, dst);

   311             else

   312                 return decodeBufferLoop(src, dst);

   313         }

   314         public void implReset() {

   315             super.implReset();

   316         }

   317         public CoderResult implFlush(CharBuffer out) {

   318             return super.implFlush(out);

   319         }

   320     }

   321 

   322 

   323     static class Encoder extends CharsetEncoder {

   324 

   325         final static SingleByte.Encoder ENC0201 =

   326             (SingleByte.Encoder)new JIS_X_0201().newEncoder();

   327 

   328         final static DoubleByte.Encoder ENC0208 =

   329             (DoubleByte.Encoder)new JIS_X_0208().newEncoder();

   330 

   331         final static DoubleByte.Encoder ENC0212 =

   332             (DoubleByte.Encoder)new JIS_X_0212().newEncoder();

   333 

   334         final static DoubleByte.Encoder ibm943 =

   335             (DoubleByte.Encoder)new IBM943().newEncoder();

   336 

   337         private final Surrogate.Parser sgp = new Surrogate.Parser();

   338 

   339         private final SingleByte.Encoder enc0201;

   340         private final DoubleByte.Encoder enc0208;

   341         private final DoubleByte.Encoder enc0212;

   342 

   343         private final String G2_c =

   344             "\u2015\u2211\u221F\u2225\u222E\u22BF\u2460\u2461\u2462\u2463"+

   345             "\u2464\u2465\u2466\u2467\u2468\u2469\u246A\u246B\u246C\u246D"+

   346             "\u246E\u246F\u2470\u2471\u2472\u2473\u301D\u301F\u3232\u3239"+

   347             "\u32A4\u32A5\u32A6\u32A7\u32A8\u3303\u330D\u3314\u3318\u3322"+

   348             "\u3323\u3326\u3327\u332B\u3336\u333B\u3349\u334A\u334D\u3351"+

   349             "\u3357\u337B\u337C\u337D\u337E\u338E\u338F\u339C\u339D\u339E"+

   350             "\u33A1\u33C4\u33CD\u4FE0\u525D\u555E\u5699\u56CA\u5861\u5C5B"+

   351             "\u5C62\u6414\u6451\u6522\u6805\u688E\u6F51\u7006\u7130\u7626"+

   352             "\u79B1\u7C1E\u7E48\u7E61\u7E6B\u8141\u8346\u840A\u8523\u87EC"+

   353             "\u881F\u8EC0\u91AC\u91B1\u9830\u9839\u985A\u9A52\u9DD7\u9E7C"+

   354             "\u9EB4\u9EB5\uFF0D\uFF5E\uFFE0\uFFE1\uFFE2";

   355 

   356         private final String G2_b =

   357             "\uA1BD\uADF4\uADF8\uA1C2\uADF3\uADF9\uADA1\uADA2\uADA3\uADA4"+

   358             "\uADA5\uADA6\uADA7\uADA8\uADA9\uADAA\uADAB\uADAC\uADAD\uADAE"+

   359             "\uADAF\uADB0\uADB1\uADB2\uADB3\uADB4\uADE0\uADE1\uADEB\uADEC"+

   360             "\uADE5\uADE6\uADE7\uADE8\uADE9\uADC6\uADCA\uADC1\uADC4\uADC2"+

   361             "\uADCC\uADCB\uADC5\uADCD\uADC7\uADCF\uADC0\uADCE\uADC3\uADC8"+

   362             "\uADC9\uADDF\uADEF\uADEE\uADED\uADD3\uADD4\uADD0\uADD1\uADD2"+

   363             "\uADD6\uADD5\uADE3\uB6A2\uC7ED\uB0A2\uB3FA\uC7B9\uC5B6\uD6A2"+

   364             "\uBCC8\uC1DF\uC4CF\uDAB9\uBAF4\uDBF4\uC8AE\uC6C2\uB1EB\uC1E9"+

   365             "\uC5F8\uC3BD\uE5DA\uBDAB\uB7D2\uE7A6\uB7D5\uCDE9\uBED5\uC0E6"+

   366             "\uCFB9\uB6ED\uBEDF\uC8B0\uCBCB\uF0F8\uC5BF\uC2CD\uB2AA\uB8B4"+

   367             "\uB9ED\uCCCD\uA1DD\uA1C1\uA1F1\uA1F2\uA2CC";

   368 

   369         private final String G3_c =

   370             "\u2116\u2121\u2160\u2161\u2162\u2163\u2164\u2165\u2166\u2167"+

   371             "\u2168\u2169\u2170\u2171\u2172\u2173\u2174\u2175\u2176\u2177"+

   372             "\u2178\u2179\u3231\u4EFC\u50F4\u51EC\u5307\u5324\u548A\u5759"+

   373             "\u589E\u5BEC\u5CF5\u5D53\u5FB7\u6085\u6120\u654E\u663B\u6665"+

   374             "\u6801\u6A6B\u6AE2\u6DF2\u6DF8\u7028\u70BB\u7501\u7682\u769E"+

   375             "\u7930\u7AE7\u7DA0\u7DD6\u8362\u85B0\u8807\u8B7F\u8CF4\u8D76"+

   376             "\u90DE\u9115\u9592\u973B\u974D\u9751\u999E\u9AD9\u9B72\u9ED1"+

   377             "\uF86F\uF929\uF9DC\uFA0E\uFA0F\uFA10\uFA11\uFA12\uFA13\uFA14"+

   378             "\uFA15\uFA16\uFA17\uFA18\uFA19\uFA1A\uFA1B\uFA1C\uFA1D\uFA1E"+

   379             "\uFA1F\uFA20\uFA21\uFA22\uFA23\uFA24\uFA25\uFA26\uFA27\uFA28"+

   380             "\uFA29\uFA2A\uFA2B\uFA2C\uFA2D\uFF02\uFF07\uFFE4";

   381 

   382         private final String G3_b =

   383             "\uF3B8\uF3B9\uF3AB\uF3AC\uF3AD\uF3AE\uF3AF\uF3B0\uF3B1\uF3B2"+

   384             "\uF3B3\uF3B4\uF3A1\uF3A2\uF3A3\uF3A4\uF3A5\uF3A6\uF3A7\uF3A8"+

   385             "\uF3A9\uF3AA\uF3B7\uF4A2\uF4A3\uF4A4\uF4A5\uF4A6\uF4A8\uF4A9"+

   386             "\uF4AC\uF4AE\uF4AF\uF4B0\uF4B2\uF4B3\uF4B4\uF4B5\uF4B6\uF4B7"+

   387             "\uF4BA\uF4BD\uF4BE\uF4C0\uF4BF\uF4C2\uF4A1\uF4C6\uF4C7\uF4C8"+

   388             "\uF4CB\uF4D0\uF4D4\uF4D5\uF4D7\uF4D9\uF4DC\uF4DF\uF4E0\uF4E1"+

   389             "\uF4E5\uF4E7\uF4EA\uF4ED\uF4EE\uF4EF\uF4F4\uF4F5\uF4F6\uF4F8"+

   390             "\uF3B8\uF4B9\uF4EB\uF4A7\uF4AA\uF4AB\uF4B1\uF4B8\uF4BB\uF4BC"+

   391             "\uF4C4\uF4C5\uF4C9\uF4CC\uF4CD\uF4CE\uF4CF\uF4D1\uF4D3\uF4D6"+

   392             "\uF4D8\uF4DA\uF4DB\uF4DE\uF4E2\uF4E3\uF4E4\uF4E6\uF4E8\uF4E9"+

   393             "\uF4EC\uF4F1\uF4F2\uF4F3\uF4F7\uF3B6\uF3B5\uA2C3";

   394 

   395         protected Encoder(Charset cs) {

   396             this(cs, 3.0f, 3.0f, ENC0201, ENC0208, ENC0212);

   397         }

   398 

   399         protected Encoder(Charset cs, float avgBpc, float maxBpc,

   400                           SingleByte.Encoder enc0201,

   401                           DoubleByte.Encoder enc0208,

   402                           DoubleByte.Encoder enc0212) {

   403             super(cs, avgBpc, maxBpc);

   404             this.enc0201 = enc0201;

   405             this.enc0208 = enc0208;

   406             this.enc0212 = enc0212;

   407         }

   408 

   409         public boolean canEncode(char c) {

   410             byte[]  encodedBytes = new byte[3];

   411             return encodeSingle(c, encodedBytes) != 0 ||

   412                    encodeDouble(c) != UNMAPPABLE_ENCODING;

   413         }

   414 

   415         private final static String G1_c = "\u00A2\u00A3\u00AC";

   416 

   417         protected int encodeSingle(char inputChar, byte[] outputByte) {

   418             if (inputChar >= 0x80 && inputChar < 0x8e) {

   419                 outputByte[0] = (byte)inputChar;

   420                 return 1;

   421             }

   422             if (inputChar >= 0x90 && inputChar < 0xa0) {

   423                 outputByte[0] = (byte)inputChar;

   424                 return 1;

   425             }

   426             int b = enc0201.encode(inputChar);

   427             if (b == UNMAPPABLE_ENCODING) {

   428                 int idx = G1_c.indexOf(inputChar);

   429                 if (idx > -1)

   430                     b = 0xe0 + idx;

   431             }

   432             if (b == UNMAPPABLE_ENCODING)

   433                 return 0;

   434             if (b >= 0 && b < 128) {

   435                 outputByte[0] = (byte)b;

   436                 return 1;

   437             }

   438             outputByte[0] = (byte)0x8e;

   439             outputByte[1] = (byte)b;

   440             return 2;

   441         }

   442 

   443         protected int encodeUDC(char ch) {

   444             if (ch >= '\ue000' && ch <= '\ue757') {

   445                 if (ch < '\ue3ac') {

   446                    int offset = (int)ch - 0xe000;

   447                    int b = ((offset / 94) << 8) + (offset % 94);

   448                    return b + 0xf5a1;

   449                 } else {

   450                    int offset = (int)ch - 0xe3ac;

   451                    int b = ((offset / 94) << 8) + (offset % 94);

   452                    return b + 0x8ff5a1;

   453                 }

   454             }

   455             return UNMAPPABLE_ENCODING;

   456         }

   457 

   458         protected int encodeDouble(char ch) {

   459             int idx = G2_c.indexOf(ch);

   460             if (idx > -1)

   461                 return (int)G2_b.charAt(idx);

   462             idx = G3_c.indexOf(ch);

   463             if (idx > -1)

   464                 return (int)G3_b.charAt(idx) + 0x8f0000;

   465             int b = enc0208.encodeChar(ch);

   466             if (b != UNMAPPABLE_ENCODING)

   467                 return b + 0x8080;

   468             b = encodeUDC(ch);

   469             if (b != UNMAPPABLE_ENCODING)

   470                 return b;

   471             if (ibm943.canEncode(ch)) {

   472                 b = enc0212.encodeChar(ch);

   473                 if (b != UNMAPPABLE_ENCODING) {

   474                     b += 0x8F8080;

   475                     return b;

   476                 }

   477             }

   478             return b;

   479         }

   480 

   481         private CoderResult encodeArrayLoop(CharBuffer src,

   482                                             ByteBuffer dst)

   483         {

   484             char[] sa = src.array();

   485             int sp = src.arrayOffset() + src.position();

   486             int sl = src.arrayOffset() + src.limit();

   487             assert (sp <= sl);

   488             sp = (sp <= sl ? sp : sl);

   489             byte[] da = dst.array();

   490             int dp = dst.arrayOffset() + dst.position();

   491             int dl = dst.arrayOffset() + dst.limit();

   492             assert (dp <= dl);

   493             dp = (dp <= dl ? dp : dl);

   494 

   495             int outputSize = 0;

   496             byte[]  outputByte;

   497             int     inputSize = 0;                 // Size of input

   498             byte[]  tmpBuf = new byte[3];

   499 

   500             try {

   501                 while (sp < sl) {

   502                     outputByte = tmpBuf;

   503                     char c = sa[sp];

   504                     if (Character.isSurrogate(c)) {

   505                         if (sgp.parse(c, sa, sp, sl) < 0)

   506                             return sgp.error();

   507                         return sgp.unmappableResult();

   508                     }

   509                     outputSize = encodeSingle(c, outputByte);

   510                     if (outputSize == 0) { // DoubleByte

   511                         int ncode = encodeDouble(c);

   512                         if (ncode != UNMAPPABLE_ENCODING) {

   513                             if ((ncode & 0xFF0000) == 0) {

   514                                 outputByte[0] = (byte) ((ncode & 0xff00) >> 8);

   515                                 outputByte[1] = (byte) (ncode & 0xff);

   516                                 outputSize = 2;

   517                             } else {

   518                                 outputByte[0] = (byte) 0x8f;

   519                                 outputByte[1] = (byte) ((ncode & 0xff00) >> 8);

   520                                 outputByte[2] = (byte) (ncode & 0xff);

   521                                 outputSize = 3;

   522                             }

   523                         } else {

   524                             return CoderResult.unmappableForLength(1);

   525                         }

   526                     }

   527                     if (dl - dp < outputSize)

   528                         return CoderResult.OVERFLOW;

   529                     // Put the byte in the output buffer

   530                     for (int i = 0; i < outputSize; i++) {

   531                         da[dp++] = outputByte[i];

   532                     }

   533                     sp++;

   534                 }

   535                 return CoderResult.UNDERFLOW;

   536             } finally {

   537                 src.position(sp - src.arrayOffset());

   538                 dst.position(dp - dst.arrayOffset());

   539             }

   540         }

   541 

   542         private CoderResult encodeBufferLoop(CharBuffer src,

   543                                              ByteBuffer dst)

   544         {

   545             int outputSize = 0;

   546             byte[]  outputByte;

   547             int     inputSize = 0;                 // Size of input

   548             byte[]  tmpBuf = new byte[3];

   549 

   550             int mark = src.position();

   551 

   552             try {

   553                 while (src.hasRemaining()) {

   554                     outputByte = tmpBuf;

   555                     char c = src.get();

   556                     if (Character.isSurrogate(c)) {

   557                         if (sgp.parse(c, src) < 0)

   558                             return sgp.error();

   559                         return sgp.unmappableResult();

   560                     }

   561                     outputSize = encodeSingle(c, outputByte);

   562                     if (outputSize == 0) { // DoubleByte

   563                         int ncode = encodeDouble(c);

   564                         if (ncode != UNMAPPABLE_ENCODING) {

   565                             if ((ncode & 0xFF0000) == 0) {

   566                                 outputByte[0] = (byte) ((ncode & 0xff00) >> 8);

   567                                 outputByte[1] = (byte) (ncode & 0xff);

   568                                 outputSize = 2;

   569                             } else {

   570                                 outputByte[0] = (byte) 0x8f;

   571                                 outputByte[1] = (byte) ((ncode & 0xff00) >> 8);

   572                                 outputByte[2] = (byte) (ncode & 0xff);

   573                                 outputSize = 3;

   574                             }

   575                         } else {

   576                             return CoderResult.unmappableForLength(1);

   577                         }

   578                     }

   579                     if (dst.remaining() < outputSize)

   580                         return CoderResult.OVERFLOW;

   581                     // Put the byte in the output buffer

   582                     for (int i = 0; i < outputSize; i++) {

   583                         dst.put(outputByte[i]);

   584                     }

   585                     mark++;

   586                 }

   587                 return CoderResult.UNDERFLOW;

   588             } finally {

   589                 src.position(mark);

   590             }

   591         }

   592 

   593         protected CoderResult encodeLoop(CharBuffer src,

   594                                          ByteBuffer dst)

   595         {

   596             if (src.hasArray() && dst.hasArray())

   597                 return encodeArrayLoop(src, dst);

   598             else

   599                 return encodeBufferLoop(src, dst);

   600         }

   601     }

   602 }