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com.ozacc.mail.fetch.impl.sk_jp.io.CharCodeConverter |
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1 | /* |
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2 | * Copyright (c) 2003 Shin Kinoshita All Rights Reserved. |
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3 | */ |
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4 | package com.ozacc.mail.fetch.impl.sk_jp.io; |
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5 | ||
6 | import java.io.ByteArrayOutputStream; |
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7 | import java.io.UnsupportedEncodingException; |
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8 | ||
9 | /** |
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10 | * ʸ»ú´Ø·¸¤Î¥³¥ó¥Ð¡¼¥¿¤Ç¤¹¡£ |
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11 | * °?Éô¥³¡¼¥É¤Î¥ª¥?¥¸¥Ê¥?¤Ï<a href="http://www-cms.phys.s.u-tokyo.ac.jp/~naoki/CIPINTRO/CCGI/kanjicod.html">Japanese Kanji Code</a>¤Ë¤Æ¸ø³«¤µ¤?¤Æ¤¤¤?¤â¤Î¤Ç¤¹¡£ |
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12 | * ¤Þ¤¿¡¢http://www.sk-jp.com/cgi-bin/treebbs.cgi?kako=1&all=644&s=681 |
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13 | * ¤Ë¤Æ YOSI ¤µ¤ó¤¬¸ø³«¤µ¤?¤¿¥³¡¼¥É¤â»²¹Í¤Ë¤·¤Æ¤¤¤Þ¤¹(¤È¤¤¤¦¤«¼Â¼ÁƱ¤¸¤Ç¤¹)¡£ |
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14 | * |
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15 | * @author Shin |
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16 | * @version $Revision: 1.1.2.1 $ $Date: 2005/01/18 07:20:36 $ |
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17 | */ |
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18 | 0 | public class CharCodeConverter { |
19 | public static final byte[] SJIS_KANA; |
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20 | static { |
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21 | try { |
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22 | // Á´³Ñ¤Ø¤ÎÊÑ´¹¥Æ¡¼¥Ö¥? |
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23 | 0 | SJIS_KANA = "¡£¡Ö¡×¡¢¡¦¥ò¥¡¥£¥¥¥§¥©¥ã¥å¥ç¥Ã¡¼¥¢¥¤¥¦¥¨¥ª¥«¥¥¯¥±¥³¥µ¥·¥¹¥»¥½¥¿¥Á¥Ä¥Æ¥È¥Ê¥Ë¥Ì¥Í¥Î¥Ï¥Ò¥Õ¥Ø¥Û¥Þ¥ß¥à¥á¥â¥ä¥æ¥è¥é¥?¥?¥?¥úÁ?¥ó¡«¡¬".getBytes("Shift_JIS"); |
24 | 0 | } catch (UnsupportedEncodingException e) { |
25 | 0 | throw new RuntimeException("CANT HAPPEN"); |
26 | } |
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27 | } |
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28 | ||
29 | /** |
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30 | * Shift_JIS ¥¨¥ó¥³¡¼¥Ç¥£¥ó¥°¥¹¥¡¼¥à¤Ë´ð¤Å¤¯¥Ð¥¤¥ÈÎó¤? |
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31 | * ISO-2022-JP ¥¨¥ó¥³¡¼¥Ç¥£¥ó¥°¥¹¥¡¼¥à¤ËÊÑ´¹¤·¤Þ¤¹¡£ |
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32 | * ¡ÖȾ³Ñ¥«¥Ê¡×¤ÏÂб?¤¹¤?Á´³Ñʸ»ú¤ËÊÑ´¹¤·¤Þ¤¹¡£ |
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33 | */ |
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34 | public static byte[] sjisToJis(byte[] sjisBytes) { |
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35 | 0 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
36 | 0 | boolean nonAscii = false; |
37 | 0 | int len = sjisBytes.length; |
38 | 0 | for (int i = 0; i < len; i++ ) { |
39 | 0 | if (sjisBytes[i] >= 0) { |
40 | 0 | if (nonAscii) { |
41 | 0 | nonAscii = false; |
42 | 0 | out.write(0x1b); |
43 | 0 | out.write('('); |
44 | 0 | out.write('B'); |
45 | } |
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46 | 0 | out.write(sjisBytes[i]); |
47 | } else { |
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48 | 0 | if (!nonAscii) { |
49 | 0 | nonAscii = true; |
50 | 0 | out.write(0x1b); |
51 | 0 | out.write('$'); |
52 | 0 | out.write('B'); |
53 | } |
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54 | 0 | int b = sjisBytes[i] & 0xff; |
55 | 0 | if (b >= 0xa1 && b <= 0xdf) { |
56 | // Ⱦ³Ñ¥«¥Ê¤ÏÁ´³Ñ¤ËÊÑ´¹ |
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57 | 0 | int kanaIndex = (b - 0xA1) * 2; |
58 | 0 | sjisToJis(out, SJIS_KANA[kanaIndex], SJIS_KANA[kanaIndex + 1]); |
59 | } else { |
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60 | 0 | i++; |
61 | 0 | if (i == len) break; |
62 | 0 | sjisToJis(out, sjisBytes[i - 1], sjisBytes[i]); |
63 | } |
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64 | } |
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65 | } |
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66 | 0 | if (nonAscii) { |
67 | 0 | out.write(0x1b); |
68 | 0 | out.write('('); |
69 | 0 | out.write('B'); |
70 | } |
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71 | 0 | return out.toByteArray(); |
72 | } |
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73 | /** |
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74 | * £±Ê¸»ú¤Î£²¥Ð¥¤¥È Shift_JIS ¥³¡¼¥É¤? JIS ¥³¡¼¥É¤ËÊÑ´¹¤·¤Æ½ñ¤½Ð¤·¤Þ¤¹¡£ |
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75 | */ |
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76 | private static void sjisToJis( |
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77 | ByteArrayOutputStream out, byte bh, byte bl) { |
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78 | 0 | int h = (bh << 1) & 0xFF; |
79 | 0 | int l = bl & 0xFF; |
80 | 0 | if (l < 0x9F) { |
81 | 0 | if (h < 0x3F) h += 0x1F; else h -= 0x61; |
82 | 0 | if (l > 0x7E) l -= 0x20; else l -= 0x1F; |
83 | } else { |
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84 | 0 | if (h < 0x3F) h += 0x20; else h -= 0x60; |
85 | 0 | l -= 0x7E; |
86 | } |
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87 | 0 | out.write(h); |
88 | 0 | out.write(l); |
89 | 0 | } |
90 | ||
91 | /** |
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92 | * ÇÛÎó¤Ï¥?¥¤¥É¥¥ã¥é¥¯¥¿¤Î¶³¦¤Ë¤Ê¤¤¤³¤È¤òÁ°Äó¤È¤·¤Æ¤¤¤Þ¤¹¡£ |
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93 | * ¤Þ¤¿¡¢¥¨¥¹¥±¡¼¥×¥·¡¼¥±¥ó¥¹¤¬Å¬Àڤ˴ޤޤ?¤?¤³¤È¤âÁ°Äó¤Ç¤¹¡£ |
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94 | * ¥¨¥¹¥±¡¼¥×¥·¡¼¥±¥ó¥¹¤¬"(B"/"$B"°Ê³°¤Î¾?¹ç¤Ï̵»?¤·¤Þ¤¹¡£ |
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95 | */ |
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96 | public byte[] jisTosjis(byte[] jisBytes) { |
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97 | 0 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
98 | 0 | boolean nonAscii = false; |
99 | 0 | boolean kana = false; |
100 | 0 | int len = jisBytes.length; |
101 | 0 | for (int i = 0; i < len; i++) { |
102 | 0 | if (jisBytes[i] == 0x1b) { |
103 | 0 | if (i + 2 >= len) break; |
104 | 0 | if (jisBytes[i + 1] == '$' && jisBytes[i + 2] == 'B') { |
105 | 0 | nonAscii = true; |
106 | 0 | i += 2; |
107 | 0 | } else if (jisBytes[i + 1] == '(' && jisBytes[i + 2] == 'I') { |
108 | 0 | kana = true; |
109 | 0 | i += 2; |
110 | 0 | } else if (jisBytes[i + 1] == '(' && jisBytes[i + 2] == 'B') { |
111 | 0 | nonAscii = false; |
112 | 0 | kana = false; |
113 | 0 | i += 2; |
114 | } else { |
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115 | // illegal sequence ¤ÏÅöÌÌ̵»? |
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116 | 0 | nonAscii = false; |
117 | 0 | kana = false; |
118 | } |
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119 | 0 | continue; |
120 | } |
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121 | 0 | if (jisBytes[i] == 0x0e) { // SO |
122 | 0 | kana = true; |
123 | 0 | continue; |
124 | } |
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125 | 0 | if (jisBytes[i] == 0x0f) { // SI |
126 | 0 | kana = false; |
127 | 0 | continue; |
128 | } |
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129 | 0 | if (kana) { |
130 | 0 | out.write(jisBytes[i] | 0x80); |
131 | 0 | } else if (nonAscii) { |
132 | 0 | i++; |
133 | 0 | if (i == jisBytes.length) break; |
134 | 0 | jisToSjis(out, jisBytes[i - 1], jisBytes[i]); |
135 | } else { |
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136 | 0 | out.write(jisBytes[i]); |
137 | } |
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138 | } |
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139 | 0 | return out.toByteArray(); |
140 | } |
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141 | /** |
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142 | * £±Ê¸»ú¤Î£²¥Ð¥¤¥È JIS ¥³¡¼¥É¤? Shift_JIS ¤ËÊÑ´¹¤·¤Æ½ñ¤½Ð¤·¤Þ¤¹¡£ |
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143 | */ |
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144 | private static void jisToSjis( |
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145 | ByteArrayOutputStream out, byte bh, byte bl) { |
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146 | 0 | int h = bh & 0xFF; |
147 | 0 | int l = bl & 0xFF; |
148 | 0 | if ((h & 0x01) > 0) { |
149 | 0 | h >>= 1; |
150 | 0 | if (h < 0x2F) h += 0x71; else h -= 0x4F; |
151 | 0 | if (l > 0x5F) l += 0x20; else l += 0x1F; |
152 | } else { |
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153 | 0 | h >>= 1; |
154 | 0 | if (h < 0x2F) h += 0x70; else h -= 0x50; |
155 | 0 | l += 0x7E; |
156 | } |
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157 | 0 | out.write(h); |
158 | 0 | out.write(l); |
159 | 0 | } |
160 | } |
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