Mercurial > vim
annotate src/arabic.c @ 10042:4aead6a9b7a9 v7.4.2293
commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
Author: Bram Moolenaar <Bram@vim.org>
Date: Mon Aug 29 22:49:24 2016 +0200
patch 7.4.2293
Problem: Modelines in source code are inconsistant.
Solution: Use the same line in most files. Add 'noet'. (Naruhiko Nishino)
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Mon, 29 Aug 2016 23:00:11 +0200 |
| parents | 9b048dced116 |
| children | f91d4c95b696 |
| rev | line source |
|---|---|
|
10042
4aead6a9b7a9
commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
Christian Brabandt <cb@256bit.org>
parents:
9403
diff
changeset
|
1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 /* | |
| 11 * arabic.c: functions for Arabic language | |
| 12 * | |
| 13 * Author: Nadim Shaikli & Isam Bayazidi | |
| 14 */ | |
| 15 | |
|
9403
9b048dced116
commit https://github.com/vim/vim/commit/75464dc434c43efac60e8bfd9bec2a8b736407e9
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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16 #include "vim.h" |
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9b048dced116
commit https://github.com/vim/vim/commit/75464dc434c43efac60e8bfd9bec2a8b736407e9
Christian Brabandt <cb@256bit.org>
parents:
7817
diff
changeset
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17 |
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9b048dced116
commit https://github.com/vim/vim/commit/75464dc434c43efac60e8bfd9bec2a8b736407e9
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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18 #if defined(FEAT_ARABIC) || defined(PROTO) |
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9b048dced116
commit https://github.com/vim/vim/commit/75464dc434c43efac60e8bfd9bec2a8b736407e9
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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19 |
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7799
af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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20 static int A_is_a(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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21 static int A_is_s(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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22 static int A_is_f(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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23 static int chg_c_a2s(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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24 static int chg_c_a2i(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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25 static int chg_c_a2m(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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26 static int chg_c_a2f(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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27 static int chg_c_i2m(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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28 static int chg_c_f2m(int cur_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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29 static int chg_c_laa2i(int hid_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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30 static int chg_c_laa2f(int hid_c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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31 static int half_shape(int c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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32 static int A_firstc_laa(int c1, int c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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33 static int A_is_harakat(int c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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34 static int A_is_iso(int c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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35 static int A_is_formb(int c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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36 static int A_is_ok(int c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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37 static int A_is_valid(int c); |
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af3c41a3c53f
commit https://github.com/vim/vim/commit/f28dbcea371b3a35727d91afc90fb90e0527d78a
Christian Brabandt <cb@256bit.org>
parents:
3549
diff
changeset
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38 static int A_is_special(int c); |
| 7 | 39 |
| 40 | |
| 41 /* | |
| 42 * Returns True if c is an ISO-8859-6 shaped ARABIC letter (user entered) | |
| 43 */ | |
| 44 static int | |
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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45 A_is_a(int cur_c) |
| 7 | 46 { |
| 47 switch (cur_c) | |
| 48 { | |
| 49 case a_HAMZA: | |
| 50 case a_ALEF_MADDA: | |
| 51 case a_ALEF_HAMZA_ABOVE: | |
| 52 case a_WAW_HAMZA: | |
| 53 case a_ALEF_HAMZA_BELOW: | |
| 54 case a_YEH_HAMZA: | |
| 55 case a_ALEF: | |
| 56 case a_BEH: | |
| 57 case a_TEH_MARBUTA: | |
| 58 case a_TEH: | |
| 59 case a_THEH: | |
| 60 case a_JEEM: | |
| 61 case a_HAH: | |
| 62 case a_KHAH: | |
| 63 case a_DAL: | |
| 64 case a_THAL: | |
| 65 case a_REH: | |
| 66 case a_ZAIN: | |
| 67 case a_SEEN: | |
| 68 case a_SHEEN: | |
| 69 case a_SAD: | |
| 70 case a_DAD: | |
| 71 case a_TAH: | |
| 72 case a_ZAH: | |
| 73 case a_AIN: | |
| 74 case a_GHAIN: | |
| 75 case a_TATWEEL: | |
| 76 case a_FEH: | |
| 77 case a_QAF: | |
| 78 case a_KAF: | |
| 79 case a_LAM: | |
| 80 case a_MEEM: | |
| 81 case a_NOON: | |
| 82 case a_HEH: | |
| 83 case a_WAW: | |
| 84 case a_ALEF_MAKSURA: | |
| 85 case a_YEH: | |
| 86 return TRUE; | |
| 87 } | |
| 88 | |
| 89 return FALSE; | |
| 90 } | |
| 91 | |
| 92 | |
| 93 /* | |
| 94 * Returns True if c is an Isolated Form-B ARABIC letter | |
| 95 */ | |
| 96 static int | |
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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97 A_is_s(int cur_c) |
| 7 | 98 { |
| 99 switch (cur_c) | |
| 100 { | |
| 101 case a_s_HAMZA: | |
| 102 case a_s_ALEF_MADDA: | |
| 103 case a_s_ALEF_HAMZA_ABOVE: | |
| 104 case a_s_WAW_HAMZA: | |
| 105 case a_s_ALEF_HAMZA_BELOW: | |
| 106 case a_s_YEH_HAMZA: | |
| 107 case a_s_ALEF: | |
| 108 case a_s_BEH: | |
| 109 case a_s_TEH_MARBUTA: | |
| 110 case a_s_TEH: | |
| 111 case a_s_THEH: | |
| 112 case a_s_JEEM: | |
| 113 case a_s_HAH: | |
| 114 case a_s_KHAH: | |
| 115 case a_s_DAL: | |
| 116 case a_s_THAL: | |
| 117 case a_s_REH: | |
| 118 case a_s_ZAIN: | |
| 119 case a_s_SEEN: | |
| 120 case a_s_SHEEN: | |
| 121 case a_s_SAD: | |
| 122 case a_s_DAD: | |
| 123 case a_s_TAH: | |
| 124 case a_s_ZAH: | |
| 125 case a_s_AIN: | |
| 126 case a_s_GHAIN: | |
| 127 case a_s_FEH: | |
| 128 case a_s_QAF: | |
| 129 case a_s_KAF: | |
| 130 case a_s_LAM: | |
| 131 case a_s_MEEM: | |
| 132 case a_s_NOON: | |
| 133 case a_s_HEH: | |
| 134 case a_s_WAW: | |
| 135 case a_s_ALEF_MAKSURA: | |
| 136 case a_s_YEH: | |
| 137 return TRUE; | |
| 138 } | |
| 139 | |
| 140 return FALSE; | |
| 141 } | |
| 142 | |
| 143 | |
| 144 /* | |
| 145 * Returns True if c is a Final shape of an ARABIC letter | |
| 146 */ | |
| 147 static int | |
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83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
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148 A_is_f(int cur_c) |
| 7 | 149 { |
| 150 switch (cur_c) | |
| 151 { | |
| 152 case a_f_ALEF_MADDA: | |
| 153 case a_f_ALEF_HAMZA_ABOVE: | |
| 154 case a_f_WAW_HAMZA: | |
| 155 case a_f_ALEF_HAMZA_BELOW: | |
| 156 case a_f_YEH_HAMZA: | |
| 157 case a_f_ALEF: | |
| 158 case a_f_BEH: | |
| 159 case a_f_TEH_MARBUTA: | |
| 160 case a_f_TEH: | |
| 161 case a_f_THEH: | |
| 162 case a_f_JEEM: | |
| 163 case a_f_HAH: | |
| 164 case a_f_KHAH: | |
| 165 case a_f_DAL: | |
| 166 case a_f_THAL: | |
| 167 case a_f_REH: | |
| 168 case a_f_ZAIN: | |
| 169 case a_f_SEEN: | |
| 170 case a_f_SHEEN: | |
| 171 case a_f_SAD: | |
| 172 case a_f_DAD: | |
| 173 case a_f_TAH: | |
| 174 case a_f_ZAH: | |
| 175 case a_f_AIN: | |
| 176 case a_f_GHAIN: | |
| 177 case a_f_FEH: | |
| 178 case a_f_QAF: | |
| 179 case a_f_KAF: | |
| 180 case a_f_LAM: | |
| 181 case a_f_MEEM: | |
| 182 case a_f_NOON: | |
| 183 case a_f_HEH: | |
| 184 case a_f_WAW: | |
| 185 case a_f_ALEF_MAKSURA: | |
| 186 case a_f_YEH: | |
| 187 case a_f_LAM_ALEF_MADDA_ABOVE: | |
| 188 case a_f_LAM_ALEF_HAMZA_ABOVE: | |
| 189 case a_f_LAM_ALEF_HAMZA_BELOW: | |
| 190 case a_f_LAM_ALEF: | |
| 191 return TRUE; | |
| 192 } | |
| 193 return FALSE; | |
| 194 } | |
| 195 | |
| 196 | |
| 197 /* | |
| 198 * Change shape - from ISO-8859-6/Isolated to Form-B Isolated | |
| 199 */ | |
| 200 static int | |
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
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201 chg_c_a2s(int cur_c) |
| 7 | 202 { |
| 203 int tempc; | |
| 204 | |
| 205 switch (cur_c) | |
| 206 { | |
| 207 case a_HAMZA: | |
| 208 tempc = a_s_HAMZA; | |
| 209 break; | |
| 210 case a_ALEF_MADDA: | |
| 211 tempc = a_s_ALEF_MADDA; | |
| 212 break; | |
| 213 case a_ALEF_HAMZA_ABOVE: | |
| 214 tempc = a_s_ALEF_HAMZA_ABOVE; | |
| 215 break; | |
| 216 case a_WAW_HAMZA: | |
| 217 tempc = a_s_WAW_HAMZA; | |
| 218 break; | |
| 219 case a_ALEF_HAMZA_BELOW: | |
| 220 tempc = a_s_ALEF_HAMZA_BELOW; | |
| 221 break; | |
| 222 case a_YEH_HAMZA: | |
| 223 tempc = a_s_YEH_HAMZA; | |
| 224 break; | |
| 225 case a_ALEF: | |
| 226 tempc = a_s_ALEF; | |
| 227 break; | |
| 228 case a_TEH_MARBUTA: | |
| 229 tempc = a_s_TEH_MARBUTA; | |
| 230 break; | |
| 231 case a_DAL: | |
| 232 tempc = a_s_DAL; | |
| 233 break; | |
| 234 case a_THAL: | |
| 235 tempc = a_s_THAL; | |
| 236 break; | |
| 237 case a_REH: | |
| 238 tempc = a_s_REH; | |
| 239 break; | |
| 240 case a_ZAIN: | |
| 241 tempc = a_s_ZAIN; | |
| 242 break; | |
| 243 case a_TATWEEL: /* exceptions */ | |
| 244 tempc = cur_c; | |
| 245 break; | |
| 246 case a_WAW: | |
| 247 tempc = a_s_WAW; | |
| 248 break; | |
| 249 case a_ALEF_MAKSURA: | |
| 250 tempc = a_s_ALEF_MAKSURA; | |
| 251 break; | |
| 252 case a_BEH: | |
| 253 tempc = a_s_BEH; | |
| 254 break; | |
| 255 case a_TEH: | |
| 256 tempc = a_s_TEH; | |
| 257 break; | |
| 258 case a_THEH: | |
| 259 tempc = a_s_THEH; | |
| 260 break; | |
| 261 case a_JEEM: | |
| 262 tempc = a_s_JEEM; | |
| 263 break; | |
| 264 case a_HAH: | |
| 265 tempc = a_s_HAH; | |
| 266 break; | |
| 267 case a_KHAH: | |
| 268 tempc = a_s_KHAH; | |
| 269 break; | |
| 270 case a_SEEN: | |
| 271 tempc = a_s_SEEN; | |
| 272 break; | |
| 273 case a_SHEEN: | |
| 274 tempc = a_s_SHEEN; | |
| 275 break; | |
| 276 case a_SAD: | |
| 277 tempc = a_s_SAD; | |
| 278 break; | |
| 279 case a_DAD: | |
| 280 tempc = a_s_DAD; | |
| 281 break; | |
| 282 case a_TAH: | |
| 283 tempc = a_s_TAH; | |
| 284 break; | |
| 285 case a_ZAH: | |
| 286 tempc = a_s_ZAH; | |
| 287 break; | |
| 288 case a_AIN: | |
| 289 tempc = a_s_AIN; | |
| 290 break; | |
| 291 case a_GHAIN: | |
| 292 tempc = a_s_GHAIN; | |
| 293 break; | |
| 294 case a_FEH: | |
| 295 tempc = a_s_FEH; | |
| 296 break; | |
| 297 case a_QAF: | |
| 298 tempc = a_s_QAF; | |
| 299 break; | |
| 300 case a_KAF: | |
| 301 tempc = a_s_KAF; | |
| 302 break; | |
| 303 case a_LAM: | |
| 304 tempc = a_s_LAM; | |
| 305 break; | |
| 306 case a_MEEM: | |
| 307 tempc = a_s_MEEM; | |
| 308 break; | |
| 309 case a_NOON: | |
| 310 tempc = a_s_NOON; | |
| 311 break; | |
| 312 case a_HEH: | |
| 313 tempc = a_s_HEH; | |
| 314 break; | |
| 315 case a_YEH: | |
| 316 tempc = a_s_YEH; | |
| 317 break; | |
| 318 default: | |
| 319 tempc = 0; | |
| 320 } | |
| 321 | |
| 322 return tempc; | |
| 323 } | |
| 324 | |
| 325 | |
| 326 /* | |
| 327 * Change shape - from ISO-8859-6/Isolated to Initial | |
| 328 */ | |
| 329 static int | |
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
330 chg_c_a2i(int cur_c) |
| 7 | 331 { |
| 332 int tempc; | |
| 333 | |
| 334 switch (cur_c) | |
| 335 { | |
| 336 case a_YEH_HAMZA: | |
| 337 tempc = a_i_YEH_HAMZA; | |
| 338 break; | |
| 339 case a_HAMZA: /* exceptions */ | |
| 340 tempc = a_s_HAMZA; | |
| 341 break; | |
| 342 case a_ALEF_MADDA: /* exceptions */ | |
| 343 tempc = a_s_ALEF_MADDA; | |
| 344 break; | |
| 345 case a_ALEF_HAMZA_ABOVE: /* exceptions */ | |
| 346 tempc = a_s_ALEF_HAMZA_ABOVE; | |
| 347 break; | |
| 348 case a_WAW_HAMZA: /* exceptions */ | |
| 349 tempc = a_s_WAW_HAMZA; | |
| 350 break; | |
| 351 case a_ALEF_HAMZA_BELOW: /* exceptions */ | |
| 352 tempc = a_s_ALEF_HAMZA_BELOW; | |
| 353 break; | |
| 354 case a_ALEF: /* exceptions */ | |
| 355 tempc = a_s_ALEF; | |
| 356 break; | |
| 357 case a_TEH_MARBUTA: /* exceptions */ | |
| 358 tempc = a_s_TEH_MARBUTA; | |
| 359 break; | |
| 360 case a_DAL: /* exceptions */ | |
| 361 tempc = a_s_DAL; | |
| 362 break; | |
| 363 case a_THAL: /* exceptions */ | |
| 364 tempc = a_s_THAL; | |
| 365 break; | |
| 366 case a_REH: /* exceptions */ | |
| 367 tempc = a_s_REH; | |
| 368 break; | |
| 369 case a_ZAIN: /* exceptions */ | |
| 370 tempc = a_s_ZAIN; | |
| 371 break; | |
| 372 case a_TATWEEL: /* exceptions */ | |
| 373 tempc = cur_c; | |
| 374 break; | |
| 375 case a_WAW: /* exceptions */ | |
| 376 tempc = a_s_WAW; | |
| 377 break; | |
| 378 case a_ALEF_MAKSURA: /* exceptions */ | |
| 379 tempc = a_s_ALEF_MAKSURA; | |
| 380 break; | |
| 381 case a_BEH: | |
| 382 tempc = a_i_BEH; | |
| 383 break; | |
| 384 case a_TEH: | |
| 385 tempc = a_i_TEH; | |
| 386 break; | |
| 387 case a_THEH: | |
| 388 tempc = a_i_THEH; | |
| 389 break; | |
| 390 case a_JEEM: | |
| 391 tempc = a_i_JEEM; | |
| 392 break; | |
| 393 case a_HAH: | |
| 394 tempc = a_i_HAH; | |
| 395 break; | |
| 396 case a_KHAH: | |
| 397 tempc = a_i_KHAH; | |
| 398 break; | |
| 399 case a_SEEN: | |
| 400 tempc = a_i_SEEN; | |
| 401 break; | |
| 402 case a_SHEEN: | |
| 403 tempc = a_i_SHEEN; | |
| 404 break; | |
| 405 case a_SAD: | |
| 406 tempc = a_i_SAD; | |
| 407 break; | |
| 408 case a_DAD: | |
| 409 tempc = a_i_DAD; | |
| 410 break; | |
| 411 case a_TAH: | |
| 412 tempc = a_i_TAH; | |
| 413 break; | |
| 414 case a_ZAH: | |
| 415 tempc = a_i_ZAH; | |
| 416 break; | |
| 417 case a_AIN: | |
| 418 tempc = a_i_AIN; | |
| 419 break; | |
| 420 case a_GHAIN: | |
| 421 tempc = a_i_GHAIN; | |
| 422 break; | |
| 423 case a_FEH: | |
| 424 tempc = a_i_FEH; | |
| 425 break; | |
| 426 case a_QAF: | |
| 427 tempc = a_i_QAF; | |
| 428 break; | |
| 429 case a_KAF: | |
| 430 tempc = a_i_KAF; | |
| 431 break; | |
| 432 case a_LAM: | |
| 433 tempc = a_i_LAM; | |
| 434 break; | |
| 435 case a_MEEM: | |
| 436 tempc = a_i_MEEM; | |
| 437 break; | |
| 438 case a_NOON: | |
| 439 tempc = a_i_NOON; | |
| 440 break; | |
| 441 case a_HEH: | |
| 442 tempc = a_i_HEH; | |
| 443 break; | |
| 444 case a_YEH: | |
| 445 tempc = a_i_YEH; | |
| 446 break; | |
| 447 default: | |
| 448 tempc = 0; | |
| 449 } | |
| 450 | |
| 451 return tempc; | |
| 452 } | |
| 453 | |
| 454 | |
| 455 /* | |
| 456 * Change shape - from ISO-8859-6/Isolated to Medial | |
| 457 */ | |
| 458 static int | |
|
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
459 chg_c_a2m(int cur_c) |
| 7 | 460 { |
| 461 int tempc; | |
| 462 | |
| 463 switch (cur_c) | |
| 464 { | |
| 465 case a_HAMZA: /* exception */ | |
| 466 tempc = a_s_HAMZA; | |
| 467 break; | |
| 468 case a_ALEF_MADDA: /* exception */ | |
| 469 tempc = a_f_ALEF_MADDA; | |
| 470 break; | |
| 471 case a_ALEF_HAMZA_ABOVE: /* exception */ | |
| 472 tempc = a_f_ALEF_HAMZA_ABOVE; | |
| 473 break; | |
| 474 case a_WAW_HAMZA: /* exception */ | |
| 475 tempc = a_f_WAW_HAMZA; | |
| 476 break; | |
| 477 case a_ALEF_HAMZA_BELOW: /* exception */ | |
| 478 tempc = a_f_ALEF_HAMZA_BELOW; | |
| 479 break; | |
| 480 case a_YEH_HAMZA: | |
| 481 tempc = a_m_YEH_HAMZA; | |
| 482 break; | |
| 483 case a_ALEF: /* exception */ | |
| 484 tempc = a_f_ALEF; | |
| 485 break; | |
| 486 case a_BEH: | |
| 487 tempc = a_m_BEH; | |
| 488 break; | |
| 489 case a_TEH_MARBUTA: /* exception */ | |
| 490 tempc = a_f_TEH_MARBUTA; | |
| 491 break; | |
| 492 case a_TEH: | |
| 493 tempc = a_m_TEH; | |
| 494 break; | |
| 495 case a_THEH: | |
| 496 tempc = a_m_THEH; | |
| 497 break; | |
| 498 case a_JEEM: | |
| 499 tempc = a_m_JEEM; | |
| 500 break; | |
| 501 case a_HAH: | |
| 502 tempc = a_m_HAH; | |
| 503 break; | |
| 504 case a_KHAH: | |
| 505 tempc = a_m_KHAH; | |
| 506 break; | |
| 507 case a_DAL: /* exception */ | |
| 508 tempc = a_f_DAL; | |
| 509 break; | |
| 510 case a_THAL: /* exception */ | |
| 511 tempc = a_f_THAL; | |
| 512 break; | |
| 513 case a_REH: /* exception */ | |
| 514 tempc = a_f_REH; | |
| 515 break; | |
| 516 case a_ZAIN: /* exception */ | |
| 517 tempc = a_f_ZAIN; | |
| 518 break; | |
| 519 case a_SEEN: | |
| 520 tempc = a_m_SEEN; | |
| 521 break; | |
| 522 case a_SHEEN: | |
| 523 tempc = a_m_SHEEN; | |
| 524 break; | |
| 525 case a_SAD: | |
| 526 tempc = a_m_SAD; | |
| 527 break; | |
| 528 case a_DAD: | |
| 529 tempc = a_m_DAD; | |
| 530 break; | |
| 531 case a_TAH: | |
| 532 tempc = a_m_TAH; | |
| 533 break; | |
| 534 case a_ZAH: | |
| 535 tempc = a_m_ZAH; | |
| 536 break; | |
| 537 case a_AIN: | |
| 538 tempc = a_m_AIN; | |
| 539 break; | |
| 540 case a_GHAIN: | |
| 541 tempc = a_m_GHAIN; | |
| 542 break; | |
| 543 case a_TATWEEL: /* exception */ | |
| 544 tempc = cur_c; | |
| 545 break; | |
| 546 case a_FEH: | |
| 547 tempc = a_m_FEH; | |
| 548 break; | |
| 549 case a_QAF: | |
| 550 tempc = a_m_QAF; | |
| 551 break; | |
| 552 case a_KAF: | |
| 553 tempc = a_m_KAF; | |
| 554 break; | |
| 555 case a_LAM: | |
| 556 tempc = a_m_LAM; | |
| 557 break; | |
| 558 case a_MEEM: | |
| 559 tempc = a_m_MEEM; | |
| 560 break; | |
| 561 case a_NOON: | |
| 562 tempc = a_m_NOON; | |
| 563 break; | |
| 564 case a_HEH: | |
| 565 tempc = a_m_HEH; | |
| 566 break; | |
| 567 case a_WAW: /* exception */ | |
| 568 tempc = a_f_WAW; | |
| 569 break; | |
| 570 case a_ALEF_MAKSURA: /* exception */ | |
| 571 tempc = a_f_ALEF_MAKSURA; | |
| 572 break; | |
| 573 case a_YEH: | |
| 574 tempc = a_m_YEH; | |
| 575 break; | |
| 576 default: | |
| 577 tempc = 0; | |
| 578 } | |
| 579 | |
| 580 return tempc; | |
| 581 } | |
| 582 | |
| 583 | |
| 584 /* | |
| 585 * Change shape - from ISO-8859-6/Isolated to final | |
| 586 */ | |
| 587 static int | |
|
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
588 chg_c_a2f(int cur_c) |
| 7 | 589 { |
| 590 int tempc; | |
| 591 | |
| 592 /* NOTE: these encodings need to be accounted for | |
| 593 | |
| 594 a_f_ALEF_MADDA; | |
| 595 a_f_ALEF_HAMZA_ABOVE; | |
| 596 a_f_ALEF_HAMZA_BELOW; | |
| 597 a_f_LAM_ALEF_MADDA_ABOVE; | |
| 598 a_f_LAM_ALEF_HAMZA_ABOVE; | |
| 599 a_f_LAM_ALEF_HAMZA_BELOW; | |
| 600 */ | |
| 601 | |
| 602 switch (cur_c) | |
| 603 { | |
| 604 case a_HAMZA: /* exception */ | |
| 605 tempc = a_s_HAMZA; | |
| 606 break; | |
| 607 case a_ALEF_MADDA: | |
| 608 tempc = a_f_ALEF_MADDA; | |
| 609 break; | |
| 610 case a_ALEF_HAMZA_ABOVE: | |
| 611 tempc = a_f_ALEF_HAMZA_ABOVE; | |
| 612 break; | |
| 613 case a_WAW_HAMZA: | |
| 614 tempc = a_f_WAW_HAMZA; | |
| 615 break; | |
| 616 case a_ALEF_HAMZA_BELOW: | |
| 617 tempc = a_f_ALEF_HAMZA_BELOW; | |
| 618 break; | |
| 619 case a_YEH_HAMZA: | |
| 620 tempc = a_f_YEH_HAMZA; | |
| 621 break; | |
| 622 case a_ALEF: | |
| 623 tempc = a_f_ALEF; | |
| 624 break; | |
| 625 case a_BEH: | |
| 626 tempc = a_f_BEH; | |
| 627 break; | |
| 628 case a_TEH_MARBUTA: | |
| 629 tempc = a_f_TEH_MARBUTA; | |
| 630 break; | |
| 631 case a_TEH: | |
| 632 tempc = a_f_TEH; | |
| 633 break; | |
| 634 case a_THEH: | |
| 635 tempc = a_f_THEH; | |
| 636 break; | |
| 637 case a_JEEM: | |
| 638 tempc = a_f_JEEM; | |
| 639 break; | |
| 640 case a_HAH: | |
| 641 tempc = a_f_HAH; | |
| 642 break; | |
| 643 case a_KHAH: | |
| 644 tempc = a_f_KHAH; | |
| 645 break; | |
| 646 case a_DAL: | |
| 647 tempc = a_f_DAL; | |
| 648 break; | |
| 649 case a_THAL: | |
| 650 tempc = a_f_THAL; | |
| 651 break; | |
| 652 case a_REH: | |
| 653 tempc = a_f_REH; | |
| 654 break; | |
| 655 case a_ZAIN: | |
| 656 tempc = a_f_ZAIN; | |
| 657 break; | |
| 658 case a_SEEN: | |
| 659 tempc = a_f_SEEN; | |
| 660 break; | |
| 661 case a_SHEEN: | |
| 662 tempc = a_f_SHEEN; | |
| 663 break; | |
| 664 case a_SAD: | |
| 665 tempc = a_f_SAD; | |
| 666 break; | |
| 667 case a_DAD: | |
| 668 tempc = a_f_DAD; | |
| 669 break; | |
| 670 case a_TAH: | |
| 671 tempc = a_f_TAH; | |
| 672 break; | |
| 673 case a_ZAH: | |
| 674 tempc = a_f_ZAH; | |
| 675 break; | |
| 676 case a_AIN: | |
| 677 tempc = a_f_AIN; | |
| 678 break; | |
| 679 case a_GHAIN: | |
| 680 tempc = a_f_GHAIN; | |
| 681 break; | |
| 682 case a_TATWEEL: /* exception */ | |
| 683 tempc = cur_c; | |
| 684 break; | |
| 685 case a_FEH: | |
| 686 tempc = a_f_FEH; | |
| 687 break; | |
| 688 case a_QAF: | |
| 689 tempc = a_f_QAF; | |
| 690 break; | |
| 691 case a_KAF: | |
| 692 tempc = a_f_KAF; | |
| 693 break; | |
| 694 case a_LAM: | |
| 695 tempc = a_f_LAM; | |
| 696 break; | |
| 697 case a_MEEM: | |
| 698 tempc = a_f_MEEM; | |
| 699 break; | |
| 700 case a_NOON: | |
| 701 tempc = a_f_NOON; | |
| 702 break; | |
| 703 case a_HEH: | |
| 704 tempc = a_f_HEH; | |
| 705 break; | |
| 706 case a_WAW: | |
| 707 tempc = a_f_WAW; | |
| 708 break; | |
| 709 case a_ALEF_MAKSURA: | |
| 710 tempc = a_f_ALEF_MAKSURA; | |
| 711 break; | |
| 712 case a_YEH: | |
| 713 tempc = a_f_YEH; | |
| 714 break; | |
| 715 default: | |
| 716 tempc = 0; | |
| 717 } | |
| 718 | |
| 719 return tempc; | |
| 720 } | |
| 721 | |
| 722 | |
| 723 /* | |
| 724 * Change shape - from Initial to Medial | |
| 725 */ | |
| 726 static int | |
|
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
727 chg_c_i2m(int cur_c) |
| 7 | 728 { |
| 729 int tempc; | |
| 730 | |
| 731 switch (cur_c) | |
| 732 { | |
| 733 case a_i_YEH_HAMZA: | |
| 734 tempc = a_m_YEH_HAMZA; | |
| 735 break; | |
| 736 case a_i_BEH: | |
| 737 tempc = a_m_BEH; | |
| 738 break; | |
| 739 case a_i_TEH: | |
| 740 tempc = a_m_TEH; | |
| 741 break; | |
| 742 case a_i_THEH: | |
| 743 tempc = a_m_THEH; | |
| 744 break; | |
| 745 case a_i_JEEM: | |
| 746 tempc = a_m_JEEM; | |
| 747 break; | |
| 748 case a_i_HAH: | |
| 749 tempc = a_m_HAH; | |
| 750 break; | |
| 751 case a_i_KHAH: | |
| 752 tempc = a_m_KHAH; | |
| 753 break; | |
| 754 case a_i_SEEN: | |
| 755 tempc = a_m_SEEN; | |
| 756 break; | |
| 757 case a_i_SHEEN: | |
| 758 tempc = a_m_SHEEN; | |
| 759 break; | |
| 760 case a_i_SAD: | |
| 761 tempc = a_m_SAD; | |
| 762 break; | |
| 763 case a_i_DAD: | |
| 764 tempc = a_m_DAD; | |
| 765 break; | |
| 766 case a_i_TAH: | |
| 767 tempc = a_m_TAH; | |
| 768 break; | |
| 769 case a_i_ZAH: | |
| 770 tempc = a_m_ZAH; | |
| 771 break; | |
| 772 case a_i_AIN: | |
| 773 tempc = a_m_AIN; | |
| 774 break; | |
| 775 case a_i_GHAIN: | |
| 776 tempc = a_m_GHAIN; | |
| 777 break; | |
| 778 case a_i_FEH: | |
| 779 tempc = a_m_FEH; | |
| 780 break; | |
| 781 case a_i_QAF: | |
| 782 tempc = a_m_QAF; | |
| 783 break; | |
| 784 case a_i_KAF: | |
| 785 tempc = a_m_KAF; | |
| 786 break; | |
| 787 case a_i_LAM: | |
| 788 tempc = a_m_LAM; | |
| 789 break; | |
| 790 case a_i_MEEM: | |
| 791 tempc = a_m_MEEM; | |
| 792 break; | |
| 793 case a_i_NOON: | |
| 794 tempc = a_m_NOON; | |
| 795 break; | |
| 796 case a_i_HEH: | |
| 797 tempc = a_m_HEH; | |
| 798 break; | |
| 799 case a_i_YEH: | |
| 800 tempc = a_m_YEH; | |
| 801 break; | |
| 802 default: | |
| 803 tempc = 0; | |
| 804 } | |
| 805 | |
| 806 return tempc; | |
| 807 } | |
| 808 | |
| 809 | |
| 810 /* | |
| 811 * Change shape - from Final to Medial | |
| 812 */ | |
| 813 static int | |
|
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
814 chg_c_f2m(int cur_c) |
| 7 | 815 { |
| 816 int tempc; | |
| 817 | |
| 818 switch (cur_c) | |
| 819 { | |
| 820 /* NOTE: these encodings are multi-positional, no ? | |
| 821 case a_f_ALEF_MADDA: | |
| 822 case a_f_ALEF_HAMZA_ABOVE: | |
| 823 case a_f_ALEF_HAMZA_BELOW: | |
| 824 */ | |
| 825 case a_f_YEH_HAMZA: | |
| 826 tempc = a_m_YEH_HAMZA; | |
| 827 break; | |
| 828 case a_f_WAW_HAMZA: /* exceptions */ | |
| 829 case a_f_ALEF: | |
| 830 case a_f_TEH_MARBUTA: | |
| 831 case a_f_DAL: | |
| 832 case a_f_THAL: | |
| 833 case a_f_REH: | |
| 834 case a_f_ZAIN: | |
| 835 case a_f_WAW: | |
| 836 case a_f_ALEF_MAKSURA: | |
| 837 tempc = cur_c; | |
| 838 break; | |
| 839 case a_f_BEH: | |
| 840 tempc = a_m_BEH; | |
| 841 break; | |
| 842 case a_f_TEH: | |
| 843 tempc = a_m_TEH; | |
| 844 break; | |
| 845 case a_f_THEH: | |
| 846 tempc = a_m_THEH; | |
| 847 break; | |
| 848 case a_f_JEEM: | |
| 849 tempc = a_m_JEEM; | |
| 850 break; | |
| 851 case a_f_HAH: | |
| 852 tempc = a_m_HAH; | |
| 853 break; | |
| 854 case a_f_KHAH: | |
| 855 tempc = a_m_KHAH; | |
| 856 break; | |
| 857 case a_f_SEEN: | |
| 858 tempc = a_m_SEEN; | |
| 859 break; | |
| 860 case a_f_SHEEN: | |
| 861 tempc = a_m_SHEEN; | |
| 862 break; | |
| 863 case a_f_SAD: | |
| 864 tempc = a_m_SAD; | |
| 865 break; | |
| 866 case a_f_DAD: | |
| 867 tempc = a_m_DAD; | |
| 868 break; | |
| 869 case a_f_TAH: | |
| 870 tempc = a_m_TAH; | |
| 871 break; | |
| 872 case a_f_ZAH: | |
| 873 tempc = a_m_ZAH; | |
| 874 break; | |
| 875 case a_f_AIN: | |
| 876 tempc = a_m_AIN; | |
| 877 break; | |
| 878 case a_f_GHAIN: | |
| 879 tempc = a_m_GHAIN; | |
| 880 break; | |
| 881 case a_f_FEH: | |
| 882 tempc = a_m_FEH; | |
| 883 break; | |
| 884 case a_f_QAF: | |
| 885 tempc = a_m_QAF; | |
| 886 break; | |
| 887 case a_f_KAF: | |
| 888 tempc = a_m_KAF; | |
| 889 break; | |
| 890 case a_f_LAM: | |
| 891 tempc = a_m_LAM; | |
| 892 break; | |
| 893 case a_f_MEEM: | |
| 894 tempc = a_m_MEEM; | |
| 895 break; | |
| 896 case a_f_NOON: | |
| 897 tempc = a_m_NOON; | |
| 898 break; | |
| 899 case a_f_HEH: | |
| 900 tempc = a_m_HEH; | |
| 901 break; | |
| 902 case a_f_YEH: | |
| 903 tempc = a_m_YEH; | |
| 904 break; | |
| 905 /* NOTE: these encodings are multi-positional, no ? | |
| 906 case a_f_LAM_ALEF_MADDA_ABOVE: | |
| 907 case a_f_LAM_ALEF_HAMZA_ABOVE: | |
| 908 case a_f_LAM_ALEF_HAMZA_BELOW: | |
| 909 case a_f_LAM_ALEF: | |
| 910 */ | |
| 911 default: | |
| 912 tempc = 0; | |
| 913 } | |
| 914 | |
| 915 return tempc; | |
| 916 } | |
| 917 | |
| 918 | |
| 919 /* | |
| 920 * Change shape - from Combination (2 char) to an Isolated | |
| 921 */ | |
| 922 static int | |
|
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
923 chg_c_laa2i(int hid_c) |
| 7 | 924 { |
| 925 int tempc; | |
| 926 | |
| 927 switch (hid_c) | |
| 928 { | |
| 929 case a_ALEF_MADDA: | |
| 930 tempc = a_s_LAM_ALEF_MADDA_ABOVE; | |
| 931 break; | |
| 932 case a_ALEF_HAMZA_ABOVE: | |
| 933 tempc = a_s_LAM_ALEF_HAMZA_ABOVE; | |
| 934 break; | |
| 935 case a_ALEF_HAMZA_BELOW: | |
| 936 tempc = a_s_LAM_ALEF_HAMZA_BELOW; | |
| 937 break; | |
| 938 case a_ALEF: | |
| 939 tempc = a_s_LAM_ALEF; | |
| 940 break; | |
| 941 default: | |
| 942 tempc = 0; | |
| 943 } | |
| 944 | |
| 945 return tempc; | |
| 946 } | |
| 947 | |
| 948 | |
| 949 /* | |
| 950 * Change shape - from Combination-Isolated to Final | |
| 951 */ | |
| 952 static int | |
|
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83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
953 chg_c_laa2f(int hid_c) |
| 7 | 954 { |
| 955 int tempc; | |
| 956 | |
| 957 switch (hid_c) | |
| 958 { | |
| 959 case a_ALEF_MADDA: | |
| 960 tempc = a_f_LAM_ALEF_MADDA_ABOVE; | |
| 961 break; | |
| 962 case a_ALEF_HAMZA_ABOVE: | |
| 963 tempc = a_f_LAM_ALEF_HAMZA_ABOVE; | |
| 964 break; | |
| 965 case a_ALEF_HAMZA_BELOW: | |
| 966 tempc = a_f_LAM_ALEF_HAMZA_BELOW; | |
| 967 break; | |
| 968 case a_ALEF: | |
| 969 tempc = a_f_LAM_ALEF; | |
| 970 break; | |
| 971 default: | |
| 972 tempc = 0; | |
| 973 } | |
| 974 | |
| 975 return tempc; | |
| 976 } | |
| 977 | |
| 978 /* | |
| 979 * Do "half-shaping" on character "c". Return zero if no shaping. | |
| 980 */ | |
| 981 static int | |
|
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
982 half_shape(int c) |
| 7 | 983 { |
| 984 if (A_is_a(c)) | |
| 985 return chg_c_a2i(c); | |
| 986 if (A_is_valid(c) && A_is_f(c)) | |
| 987 return chg_c_f2m(c); | |
| 988 return 0; | |
| 989 } | |
| 990 | |
| 991 /* | |
| 992 * Do Arabic shaping on character "c". Returns the shaped character. | |
| 993 * out: "ccp" points to the first byte of the character to be shaped. | |
| 994 * in/out: "c1p" points to the first composing char for "c". | |
| 995 * in: "prev_c" is the previous character (not shaped) | |
| 996 * in: "prev_c1" is the first composing char for the previous char | |
| 997 * (not shaped) | |
| 998 * in: "next_c" is the next character (not shaped). | |
| 999 */ | |
| 1000 int | |
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1001 arabic_shape( |
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1002 int c, |
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1003 int *ccp, |
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1004 int *c1p, |
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1005 int prev_c, |
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1006 int prev_c1, |
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1007 int next_c) |
| 7 | 1008 { |
| 1009 int curr_c; | |
| 1010 int shape_c; | |
| 1011 int curr_laa; | |
| 1012 int prev_laa; | |
| 1013 | |
| 1014 /* Deal only with Arabic character, pass back all others */ | |
| 1015 if (!A_is_ok(c)) | |
| 1016 return c; | |
| 1017 | |
| 1018 /* half-shape current and previous character */ | |
| 1019 shape_c = half_shape(prev_c); | |
| 1020 | |
| 1021 /* Save away current character */ | |
| 1022 curr_c = c; | |
| 1023 | |
| 1024 curr_laa = A_firstc_laa(c, *c1p); | |
| 1025 prev_laa = A_firstc_laa(prev_c, prev_c1); | |
| 1026 | |
| 1027 if (curr_laa) | |
| 1028 { | |
| 1029 if (A_is_valid(prev_c) && !A_is_f(shape_c) | |
| 1030 && !A_is_s(shape_c) && !prev_laa) | |
| 1031 curr_c = chg_c_laa2f(curr_laa); | |
| 1032 else | |
| 1033 curr_c = chg_c_laa2i(curr_laa); | |
| 1034 | |
| 1035 /* Remove the composing character */ | |
| 1036 *c1p = 0; | |
| 1037 } | |
| 1038 else if (!A_is_valid(prev_c) && A_is_valid(next_c)) | |
| 1039 curr_c = chg_c_a2i(c); | |
| 1040 else if (!shape_c || A_is_f(shape_c) || A_is_s(shape_c) || prev_laa) | |
| 1041 curr_c = A_is_valid(next_c) ? chg_c_a2i(c) : chg_c_a2s(c); | |
| 1042 else if (A_is_valid(next_c)) | |
| 1043 curr_c = A_is_iso(c) ? chg_c_a2m(c) : chg_c_i2m(c); | |
| 1044 else if (A_is_valid(prev_c)) | |
| 1045 curr_c = chg_c_a2f(c); | |
| 1046 else | |
| 1047 curr_c = chg_c_a2s(c); | |
| 1048 | |
| 1049 /* Sanity check -- curr_c should, in the future, never be 0. | |
| 1050 * We should, in the future, insert a fatal error here. */ | |
| 1051 if (curr_c == NUL) | |
| 1052 curr_c = c; | |
| 1053 | |
| 1054 if (curr_c != c && ccp != NULL) | |
| 1055 { | |
| 3549 | 1056 char_u buf[MB_MAXBYTES + 1]; |
| 7 | 1057 |
| 1058 /* Update the first byte of the character. */ | |
| 1059 (*mb_char2bytes)(curr_c, buf); | |
| 1060 *ccp = buf[0]; | |
| 1061 } | |
| 1062 | |
| 1063 /* Return the shaped character */ | |
| 1064 return curr_c; | |
| 1065 } | |
| 1066 | |
| 1067 | |
| 1068 /* | |
| 1069 * A_firstc_laa returns first character of LAA combination if it exists | |
| 1070 */ | |
| 1071 static int | |
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1072 A_firstc_laa( |
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1073 int c, /* base character */ |
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1074 int c1) /* first composing character */ |
| 7 | 1075 { |
| 1076 if (c1 != NUL && c == a_LAM && !A_is_harakat(c1)) | |
| 1077 return c1; | |
| 1078 return 0; | |
| 1079 } | |
| 1080 | |
| 1081 | |
| 1082 /* | |
| 1083 * A_is_harakat returns TRUE if 'c' is an Arabic Harakat character | |
| 1084 * (harakat/tanween) | |
| 1085 */ | |
| 1086 static int | |
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1087 A_is_harakat(int c) |
| 7 | 1088 { |
| 1089 return (c >= a_FATHATAN && c <= a_SUKUN); | |
| 1090 } | |
| 1091 | |
| 1092 | |
| 1093 /* | |
| 1094 * A_is_iso returns TRUE if 'c' is an Arabic ISO-8859-6 character | |
| 1095 * (alphabet/number/punctuation) | |
| 1096 */ | |
| 1097 static int | |
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1098 A_is_iso(int c) |
| 7 | 1099 { |
| 1100 return ((c >= a_HAMZA && c <= a_GHAIN) | |
| 1101 || (c >= a_TATWEEL && c <= a_HAMZA_BELOW) | |
| 1102 || c == a_MINI_ALEF); | |
| 1103 } | |
| 1104 | |
| 1105 | |
| 1106 /* | |
| 1107 * A_is_formb returns TRUE if 'c' is an Arabic 10646-1 FormB character | |
| 1108 * (alphabet/number/punctuation) | |
| 1109 */ | |
| 1110 static int | |
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1111 A_is_formb(int c) |
| 7 | 1112 { |
| 1113 return ((c >= a_s_FATHATAN && c <= a_s_DAMMATAN) | |
| 1114 || c == a_s_KASRATAN | |
| 1115 || (c >= a_s_FATHA && c <= a_f_LAM_ALEF) | |
| 1116 || c == a_BYTE_ORDER_MARK); | |
| 1117 } | |
| 1118 | |
| 1119 | |
| 1120 /* | |
| 1121 * A_is_ok returns TRUE if 'c' is an Arabic 10646 (8859-6 or Form-B) | |
| 1122 */ | |
| 1123 static int | |
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1124 A_is_ok(int c) |
| 7 | 1125 { |
| 1126 return (A_is_iso(c) || A_is_formb(c)); | |
| 1127 } | |
| 1128 | |
| 1129 | |
| 1130 /* | |
| 1131 * A_is_valid returns TRUE if 'c' is an Arabic 10646 (8859-6 or Form-B) | |
| 1132 * with some exceptions/exclusions | |
| 1133 */ | |
| 1134 static int | |
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1135 A_is_valid(int c) |
| 7 | 1136 { |
| 1137 return (A_is_ok(c) && !A_is_special(c)); | |
| 1138 } | |
| 1139 | |
| 1140 | |
| 1141 /* | |
| 1142 * A_is_special returns TRUE if 'c' is not a special Arabic character. | |
| 1143 * Specials don't adhere to most of the rules. | |
| 1144 */ | |
| 1145 static int | |
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1146 A_is_special(int c) |
| 7 | 1147 { |
| 1148 return (c == a_HAMZA || c == a_s_HAMZA); | |
| 1149 } | |
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1150 |
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1151 #endif /* FEAT_ARABIC */ |