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1 /* |
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2 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package sun.nio.cs.ext; |
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27 |
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28 import java.nio.charset.Charset; |
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29 import java.nio.charset.CharsetDecoder; |
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30 import java.nio.charset.CharsetEncoder; |
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31 import java.util.Arrays; |
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32 import sun.nio.cs.DoubleByte; |
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33 import sun.nio.cs.HistoricallyNamedCharset; |
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34 import static sun.nio.cs.CharsetMapping.*; |
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35 |
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36 public class IBM942C extends Charset implements HistoricallyNamedCharset |
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37 { |
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38 public IBM942C() { |
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39 super("x-IBM942C", ExtendedCharsets.aliasesFor("x-IBM942C")); |
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40 } |
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41 |
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42 public String historicalName() { |
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43 return "Cp942C"; |
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44 } |
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45 |
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46 public boolean contains(Charset cs) { |
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47 return ((cs.name().equals("US-ASCII")) |
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48 || (cs instanceof IBM942C)); |
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49 } |
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50 |
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51 public CharsetDecoder newDecoder() { |
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52 return new DoubleByte.Decoder(this, |
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53 IBM942.b2c, |
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54 b2cSB, |
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55 0x40, |
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56 0xfc); |
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57 } |
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58 |
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59 public CharsetEncoder newEncoder() { |
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60 return new DoubleByte.Encoder(this, c2b, c2bIndex); |
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61 } |
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62 |
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63 final static char[] b2cSB; |
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64 final static char[] c2b; |
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65 final static char[] c2bIndex; |
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66 |
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67 static { |
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68 IBM942.initb2c(); |
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69 |
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70 // the mappings need udpate are |
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71 // u+001a <-> 0x1a |
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72 // u+001c <-> 0x1c |
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73 // u+005c <-> 0x5c |
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74 // u+007e <-> 0x7e |
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75 // u+007f <-> 0x7f |
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76 |
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77 b2cSB = Arrays.copyOf(IBM942.b2cSB, IBM942.b2cSB.length); |
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78 b2cSB[0x1a] = 0x1a; |
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79 b2cSB[0x1c] = 0x1c; |
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80 b2cSB[0x5c] = 0x5c; |
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81 b2cSB[0x7e] = 0x7e; |
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82 b2cSB[0x7f] = 0x7f; |
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83 |
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84 IBM942.initc2b(); |
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85 c2b = Arrays.copyOf(IBM942.c2b, IBM942.c2b.length); |
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86 c2bIndex = Arrays.copyOf(IBM942.c2bIndex, IBM942.c2bIndex.length); |
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87 c2b[c2bIndex[0] + 0x1a] = 0x1a; |
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88 c2b[c2bIndex[0] + 0x1c] = 0x1c; |
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89 c2b[c2bIndex[0] + 0x5c] = 0x5c; |
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90 c2b[c2bIndex[0] + 0x7e] = 0x7e; |
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91 c2b[c2bIndex[0] + 0x7f] = 0x7f; |
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92 } |
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93 } |