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1 /* |
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2 * _codecs_kr.c: Codecs collection for Korean encodings |
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3 * |
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4 * Written by Hye-Shik Chang <perky@FreeBSD.org> |
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5 */ |
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6 |
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7 #include "cjkcodecs.h" |
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8 #include "mappings_kr.h" |
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9 |
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10 /* |
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11 * EUC-KR codec |
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12 */ |
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13 |
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14 #define EUCKR_JAMO_FIRSTBYTE 0xA4 |
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15 #define EUCKR_JAMO_FILLER 0xD4 |
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16 |
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17 static const unsigned char u2cgk_choseong[19] = { |
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18 0xa1, 0xa2, 0xa4, 0xa7, 0xa8, 0xa9, 0xb1, 0xb2, |
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19 0xb3, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, |
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20 0xbc, 0xbd, 0xbe |
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21 }; |
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22 static const unsigned char u2cgk_jungseong[21] = { |
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23 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, |
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24 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, |
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25 0xcf, 0xd0, 0xd1, 0xd2, 0xd3 |
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26 }; |
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27 static const unsigned char u2cgk_jongseong[28] = { |
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28 0xd4, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
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29 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, |
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30 0xb1, 0xb2, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xba, |
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31 0xbb, 0xbc, 0xbd, 0xbe |
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32 }; |
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33 |
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34 ENCODER(euc_kr) |
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35 { |
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36 while (inleft > 0) { |
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37 Py_UNICODE c = IN1; |
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38 DBCHAR code; |
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39 |
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40 if (c < 0x80) { |
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41 WRITE1((unsigned char)c) |
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42 NEXT(1, 1) |
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43 continue; |
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44 } |
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45 UCS4INVALID(c) |
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46 |
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47 REQUIRE_OUTBUF(2) |
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48 TRYMAP_ENC(cp949, code, c); |
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49 else return 1; |
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50 |
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51 if ((code & 0x8000) == 0) { |
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52 /* KS X 1001 coded character */ |
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53 OUT1((code >> 8) | 0x80) |
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54 OUT2((code & 0xFF) | 0x80) |
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55 NEXT(1, 2) |
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56 } |
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57 else { /* Mapping is found in CP949 extension, |
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58 * but we encode it in KS X 1001:1998 Annex 3, |
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59 * make-up sequence for EUC-KR. */ |
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60 |
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61 REQUIRE_OUTBUF(8) |
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62 |
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63 /* syllable composition precedence */ |
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64 OUT1(EUCKR_JAMO_FIRSTBYTE) |
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65 OUT2(EUCKR_JAMO_FILLER) |
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66 |
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67 /* All codepoints in CP949 extension are in unicode |
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68 * Hangul Syllable area. */ |
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69 assert(0xac00 <= c && c <= 0xd7a3); |
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70 c -= 0xac00; |
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71 |
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72 OUT3(EUCKR_JAMO_FIRSTBYTE) |
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73 OUT4(u2cgk_choseong[c / 588]) |
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74 NEXT_OUT(4) |
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75 |
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76 OUT1(EUCKR_JAMO_FIRSTBYTE) |
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77 OUT2(u2cgk_jungseong[(c / 28) % 21]) |
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78 OUT3(EUCKR_JAMO_FIRSTBYTE) |
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79 OUT4(u2cgk_jongseong[c % 28]) |
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80 NEXT(1, 4) |
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81 } |
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82 } |
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83 |
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84 return 0; |
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85 } |
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86 |
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87 #define NONE 127 |
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88 |
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89 static const unsigned char cgk2u_choseong[] = { /* [A1, BE] */ |
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90 0, 1, NONE, 2, NONE, NONE, 3, 4, |
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91 5, NONE, NONE, NONE, NONE, NONE, NONE, NONE, |
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92 6, 7, 8, NONE, 9, 10, 11, 12, |
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93 13, 14, 15, 16, 17, 18 |
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94 }; |
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95 static const unsigned char cgk2u_jongseong[] = { /* [A1, BE] */ |
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96 1, 2, 3, 4, 5, 6, 7, NONE, |
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97 8, 9, 10, 11, 12, 13, 14, 15, |
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98 16, 17, NONE, 18, 19, 20, 21, 22, |
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99 NONE, 23, 24, 25, 26, 27 |
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100 }; |
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101 |
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102 DECODER(euc_kr) |
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103 { |
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104 while (inleft > 0) { |
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105 unsigned char c = IN1; |
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106 |
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107 REQUIRE_OUTBUF(1) |
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108 |
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109 if (c < 0x80) { |
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110 OUT1(c) |
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111 NEXT(1, 1) |
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112 continue; |
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113 } |
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114 |
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115 REQUIRE_INBUF(2) |
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116 |
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117 if (c == EUCKR_JAMO_FIRSTBYTE && |
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118 IN2 == EUCKR_JAMO_FILLER) { |
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119 /* KS X 1001:1998 Annex 3 make-up sequence */ |
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120 DBCHAR cho, jung, jong; |
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121 |
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122 REQUIRE_INBUF(8) |
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123 if ((*inbuf)[2] != EUCKR_JAMO_FIRSTBYTE || |
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124 (*inbuf)[4] != EUCKR_JAMO_FIRSTBYTE || |
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125 (*inbuf)[6] != EUCKR_JAMO_FIRSTBYTE) |
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126 return 8; |
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127 |
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128 c = (*inbuf)[3]; |
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129 if (0xa1 <= c && c <= 0xbe) |
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130 cho = cgk2u_choseong[c - 0xa1]; |
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131 else |
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132 cho = NONE; |
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133 |
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134 c = (*inbuf)[5]; |
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135 jung = (0xbf <= c && c <= 0xd3) ? c - 0xbf : NONE; |
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136 |
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137 c = (*inbuf)[7]; |
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138 if (c == EUCKR_JAMO_FILLER) |
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139 jong = 0; |
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140 else if (0xa1 <= c && c <= 0xbe) |
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141 jong = cgk2u_jongseong[c - 0xa1]; |
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142 else |
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143 jong = NONE; |
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144 |
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145 if (cho == NONE || jung == NONE || jong == NONE) |
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146 return 8; |
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147 |
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148 OUT1(0xac00 + cho*588 + jung*28 + jong); |
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149 NEXT(8, 1) |
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150 } |
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151 else TRYMAP_DEC(ksx1001, **outbuf, c ^ 0x80, IN2 ^ 0x80) { |
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152 NEXT(2, 1) |
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153 } |
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154 else |
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155 return 2; |
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156 } |
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157 |
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158 return 0; |
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159 } |
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160 #undef NONE |
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161 |
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162 |
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163 /* |
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164 * CP949 codec |
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165 */ |
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166 |
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167 ENCODER(cp949) |
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168 { |
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169 while (inleft > 0) { |
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170 Py_UNICODE c = IN1; |
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171 DBCHAR code; |
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172 |
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173 if (c < 0x80) { |
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174 WRITE1((unsigned char)c) |
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175 NEXT(1, 1) |
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176 continue; |
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177 } |
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178 UCS4INVALID(c) |
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179 |
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180 REQUIRE_OUTBUF(2) |
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181 TRYMAP_ENC(cp949, code, c); |
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182 else return 1; |
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183 |
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184 OUT1((code >> 8) | 0x80) |
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185 if (code & 0x8000) |
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186 OUT2(code & 0xFF) /* MSB set: CP949 */ |
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187 else |
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188 OUT2((code & 0xFF) | 0x80) /* MSB unset: ks x 1001 */ |
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189 NEXT(1, 2) |
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190 } |
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191 |
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192 return 0; |
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193 } |
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194 |
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195 DECODER(cp949) |
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196 { |
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197 while (inleft > 0) { |
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198 unsigned char c = IN1; |
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199 |
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200 REQUIRE_OUTBUF(1) |
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201 |
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202 if (c < 0x80) { |
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203 OUT1(c) |
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204 NEXT(1, 1) |
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205 continue; |
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206 } |
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207 |
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208 REQUIRE_INBUF(2) |
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209 TRYMAP_DEC(ksx1001, **outbuf, c ^ 0x80, IN2 ^ 0x80); |
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210 else TRYMAP_DEC(cp949ext, **outbuf, c, IN2); |
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211 else return 2; |
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212 |
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213 NEXT(2, 1) |
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214 } |
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215 |
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216 return 0; |
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217 } |
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218 |
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219 |
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220 /* |
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221 * JOHAB codec |
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222 */ |
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223 |
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224 static const unsigned char u2johabidx_choseong[32] = { |
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225 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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226 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
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227 0x10, 0x11, 0x12, 0x13, 0x14, |
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228 }; |
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229 static const unsigned char u2johabidx_jungseong[32] = { |
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230 0x03, 0x04, 0x05, 0x06, 0x07, |
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231 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
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232 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
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233 0x1a, 0x1b, 0x1c, 0x1d, |
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234 }; |
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235 static const unsigned char u2johabidx_jongseong[32] = { |
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236 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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237 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
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238 0x10, 0x11, 0x13, 0x14, 0x15, 0x16, 0x17, |
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239 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, |
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240 }; |
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241 static const DBCHAR u2johabjamo[] = { |
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242 0x8841, 0x8c41, 0x8444, 0x9041, 0x8446, 0x8447, 0x9441, |
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243 0x9841, 0x9c41, 0x844a, 0x844b, 0x844c, 0x844d, 0x844e, 0x844f, |
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244 0x8450, 0xa041, 0xa441, 0xa841, 0x8454, 0xac41, 0xb041, 0xb441, |
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245 0xb841, 0xbc41, 0xc041, 0xc441, 0xc841, 0xcc41, 0xd041, 0x8461, |
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246 0x8481, 0x84a1, 0x84c1, 0x84e1, 0x8541, 0x8561, 0x8581, 0x85a1, |
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247 0x85c1, 0x85e1, 0x8641, 0x8661, 0x8681, 0x86a1, 0x86c1, 0x86e1, |
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248 0x8741, 0x8761, 0x8781, 0x87a1, |
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249 }; |
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250 |
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251 ENCODER(johab) |
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252 { |
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253 while (inleft > 0) { |
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254 Py_UNICODE c = IN1; |
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255 DBCHAR code; |
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256 |
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257 if (c < 0x80) { |
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258 WRITE1((unsigned char)c) |
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259 NEXT(1, 1) |
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260 continue; |
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261 } |
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262 UCS4INVALID(c) |
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263 |
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264 REQUIRE_OUTBUF(2) |
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265 |
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266 if (c >= 0xac00 && c <= 0xd7a3) { |
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267 c -= 0xac00; |
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268 code = 0x8000 | |
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269 (u2johabidx_choseong[c / 588] << 10) | |
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270 (u2johabidx_jungseong[(c / 28) % 21] << 5) | |
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271 u2johabidx_jongseong[c % 28]; |
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272 } |
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273 else if (c >= 0x3131 && c <= 0x3163) |
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274 code = u2johabjamo[c - 0x3131]; |
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275 else TRYMAP_ENC(cp949, code, c) { |
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276 unsigned char c1, c2, t2; |
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277 unsigned short t1; |
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278 |
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279 assert((code & 0x8000) == 0); |
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280 c1 = code >> 8; |
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281 c2 = code & 0xff; |
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282 if (((c1 >= 0x21 && c1 <= 0x2c) || |
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283 (c1 >= 0x4a && c1 <= 0x7d)) && |
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284 (c2 >= 0x21 && c2 <= 0x7e)) { |
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285 t1 = (c1 < 0x4a ? (c1 - 0x21 + 0x1b2) : |
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286 (c1 - 0x21 + 0x197)); |
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287 t2 = ((t1 & 1) ? 0x5e : 0) + (c2 - 0x21); |
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288 OUT1(t1 >> 1) |
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289 OUT2(t2 < 0x4e ? t2 + 0x31 : t2 + 0x43) |
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290 NEXT(1, 2) |
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291 continue; |
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292 } |
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293 else |
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294 return 1; |
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295 } |
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296 else |
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297 return 1; |
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298 |
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299 OUT1(code >> 8) |
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300 OUT2(code & 0xff) |
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301 NEXT(1, 2) |
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302 } |
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303 |
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304 return 0; |
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305 } |
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306 |
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307 #define FILL 0xfd |
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308 #define NONE 0xff |
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309 |
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310 static const unsigned char johabidx_choseong[32] = { |
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311 NONE, FILL, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, |
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312 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, |
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313 0x0e, 0x0f, 0x10, 0x11, 0x12, NONE, NONE, NONE, |
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314 NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, |
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315 }; |
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316 static const unsigned char johabidx_jungseong[32] = { |
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317 NONE, NONE, FILL, 0x00, 0x01, 0x02, 0x03, 0x04, |
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318 NONE, NONE, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, |
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319 NONE, NONE, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, |
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320 NONE, NONE, 0x11, 0x12, 0x13, 0x14, NONE, NONE, |
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321 }; |
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322 static const unsigned char johabidx_jongseong[32] = { |
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323 NONE, FILL, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, |
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324 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, |
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325 0x0f, 0x10, NONE, 0x11, 0x12, 0x13, 0x14, 0x15, |
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326 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, NONE, NONE, |
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327 }; |
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328 |
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329 static const unsigned char johabjamo_choseong[32] = { |
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330 NONE, FILL, 0x31, 0x32, 0x34, 0x37, 0x38, 0x39, |
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331 0x41, 0x42, 0x43, 0x45, 0x46, 0x47, 0x48, 0x49, |
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332 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, NONE, NONE, NONE, |
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333 NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, |
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334 }; |
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335 static const unsigned char johabjamo_jungseong[32] = { |
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336 NONE, NONE, FILL, 0x4f, 0x50, 0x51, 0x52, 0x53, |
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337 NONE, NONE, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, |
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338 NONE, NONE, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, |
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339 NONE, NONE, 0x60, 0x61, 0x62, 0x63, NONE, NONE, |
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340 }; |
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341 static const unsigned char johabjamo_jongseong[32] = { |
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342 NONE, FILL, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, |
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343 0x37, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, |
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344 0x40, 0x41, NONE, 0x42, 0x44, 0x45, 0x46, 0x47, |
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345 0x48, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, NONE, NONE, |
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346 }; |
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347 |
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348 DECODER(johab) |
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349 { |
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350 while (inleft > 0) { |
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351 unsigned char c = IN1, c2; |
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352 |
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353 REQUIRE_OUTBUF(1) |
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354 |
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355 if (c < 0x80) { |
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356 OUT1(c) |
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357 NEXT(1, 1) |
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358 continue; |
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359 } |
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360 |
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361 REQUIRE_INBUF(2) |
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362 c2 = IN2; |
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363 |
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364 if (c < 0xd8) { |
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365 /* johab hangul */ |
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366 unsigned char c_cho, c_jung, c_jong; |
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367 unsigned char i_cho, i_jung, i_jong; |
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368 |
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369 c_cho = (c >> 2) & 0x1f; |
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370 c_jung = ((c << 3) | c2 >> 5) & 0x1f; |
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371 c_jong = c2 & 0x1f; |
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372 |
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373 i_cho = johabidx_choseong[c_cho]; |
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374 i_jung = johabidx_jungseong[c_jung]; |
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375 i_jong = johabidx_jongseong[c_jong]; |
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376 |
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377 if (i_cho == NONE || i_jung == NONE || i_jong == NONE) |
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378 return 2; |
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379 |
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380 /* we don't use U+1100 hangul jamo yet. */ |
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381 if (i_cho == FILL) { |
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382 if (i_jung == FILL) { |
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383 if (i_jong == FILL) |
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384 OUT1(0x3000) |
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385 else |
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386 OUT1(0x3100 | |
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387 johabjamo_jongseong[c_jong]) |
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388 } |
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389 else { |
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390 if (i_jong == FILL) |
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391 OUT1(0x3100 | |
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392 johabjamo_jungseong[c_jung]) |
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393 else |
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394 return 2; |
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395 } |
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396 } else { |
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397 if (i_jung == FILL) { |
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398 if (i_jong == FILL) |
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399 OUT1(0x3100 | |
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400 johabjamo_choseong[c_cho]) |
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401 else |
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402 return 2; |
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403 } |
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404 else |
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405 OUT1(0xac00 + |
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406 i_cho * 588 + |
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407 i_jung * 28 + |
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408 (i_jong == FILL ? 0 : i_jong)) |
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409 } |
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410 NEXT(2, 1) |
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411 } else { |
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412 /* KS X 1001 except hangul jamos and syllables */ |
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413 if (c == 0xdf || c > 0xf9 || |
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414 c2 < 0x31 || (c2 >= 0x80 && c2 < 0x91) || |
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415 (c2 & 0x7f) == 0x7f || |
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416 (c == 0xda && (c2 >= 0xa1 && c2 <= 0xd3))) |
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417 return 2; |
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418 else { |
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419 unsigned char t1, t2; |
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420 |
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421 t1 = (c < 0xe0 ? 2 * (c - 0xd9) : |
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422 2 * c - 0x197); |
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423 t2 = (c2 < 0x91 ? c2 - 0x31 : c2 - 0x43); |
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424 t1 = t1 + (t2 < 0x5e ? 0 : 1) + 0x21; |
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425 t2 = (t2 < 0x5e ? t2 : t2 - 0x5e) + 0x21; |
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426 |
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427 TRYMAP_DEC(ksx1001, **outbuf, t1, t2); |
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428 else return 2; |
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429 NEXT(2, 1) |
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430 } |
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431 } |
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432 } |
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433 |
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434 return 0; |
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435 } |
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436 #undef NONE |
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437 #undef FILL |
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438 |
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439 |
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440 BEGIN_MAPPINGS_LIST |
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441 MAPPING_DECONLY(ksx1001) |
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442 MAPPING_ENCONLY(cp949) |
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443 MAPPING_DECONLY(cp949ext) |
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444 END_MAPPINGS_LIST |
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445 |
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446 BEGIN_CODECS_LIST |
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447 CODEC_STATELESS(euc_kr) |
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448 CODEC_STATELESS(cp949) |
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449 CODEC_STATELESS(johab) |
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450 END_CODECS_LIST |
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451 |
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452 I_AM_A_MODULE_FOR(kr) |