hb-ot-shaper-vowel-constraints.cc (11271B)
1 /* == Start of generated functions == */ 2 /* 3 * The following functions are generated by running: 4 * 5 * ./gen-vowel-constraints.py ms-use/IndicShapingInvalidCluster.txt Scripts.txt 6 * 7 * on files with these headers: 8 * 9 * # IndicShapingInvalidCluster.txt 10 * # Date: 2015-03-12, 21:17:00 GMT [AG] 11 * # Date: 2019-11-08, 23:22:00 GMT [AG] 12 * 13 * # Scripts-17.0.0.txt 14 * # Date: 2025-07-24, 13:28:55 GMT 15 */ 16 17 #include "hb.hh" 18 19 #ifndef HB_NO_OT_SHAPE 20 21 #include "hb-ot-shaper-vowel-constraints.hh" 22 23 static void 24 _output_dotted_circle (hb_buffer_t *buffer) 25 { 26 (void) buffer->output_glyph (0x25CCu); 27 _hb_glyph_info_clear_continuation (&buffer->prev()); 28 } 29 30 static void 31 _output_with_dotted_circle (hb_buffer_t *buffer) 32 { 33 _output_dotted_circle (buffer); 34 (void) buffer->next_glyph (); 35 } 36 37 void 38 _hb_preprocess_text_vowel_constraints (const hb_ot_shape_plan_t *plan HB_UNUSED, 39 hb_buffer_t *buffer, 40 hb_font_t *font HB_UNUSED) 41 { 42 #ifdef HB_NO_OT_SHAPER_VOWEL_CONSTRAINTS 43 return; 44 #endif 45 if (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE) 46 return; 47 48 /* UGLY UGLY UGLY business of adding dotted-circle in the middle of 49 * vowel-sequences that look like another vowel. Data for each script 50 * collected from the USE script development spec. 51 * 52 * https://github.com/harfbuzz/harfbuzz/issues/1019 53 */ 54 buffer->clear_output (); 55 unsigned int count = buffer->len; 56 switch ((unsigned) buffer->props.script) 57 { 58 case HB_SCRIPT_DEVANAGARI: 59 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 60 { 61 bool matched = false; 62 switch (buffer->cur ().codepoint) 63 { 64 case 0x0905u: 65 switch (buffer->cur (1).codepoint) 66 { 67 case 0x093Au: case 0x093Bu: case 0x093Eu: case 0x0945u: 68 case 0x0946u: case 0x0949u: case 0x094Au: case 0x094Bu: 69 case 0x094Cu: case 0x094Fu: case 0x0956u: case 0x0957u: 70 matched = true; 71 break; 72 } 73 break; 74 case 0x0906u: 75 switch (buffer->cur (1).codepoint) 76 { 77 case 0x093Au: case 0x0945u: case 0x0946u: case 0x0947u: 78 case 0x0948u: 79 matched = true; 80 break; 81 } 82 break; 83 case 0x0909u: 84 matched = 0x0941u == buffer->cur (1).codepoint; 85 break; 86 case 0x090Fu: 87 switch (buffer->cur (1).codepoint) 88 { 89 case 0x0945u: case 0x0946u: case 0x0947u: 90 matched = true; 91 break; 92 } 93 break; 94 case 0x0930u: 95 if (0x094Du == buffer->cur (1).codepoint && 96 buffer->idx + 2 < count && 97 0x0907u == buffer->cur (2).codepoint) 98 { 99 (void) buffer->next_glyph (); 100 matched = true; 101 } 102 break; 103 } 104 (void) buffer->next_glyph (); 105 if (matched) _output_with_dotted_circle (buffer); 106 } 107 break; 108 109 case HB_SCRIPT_BENGALI: 110 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 111 { 112 bool matched = false; 113 switch (buffer->cur ().codepoint) 114 { 115 case 0x0985u: 116 matched = 0x09BEu == buffer->cur (1).codepoint; 117 break; 118 case 0x098Bu: 119 matched = 0x09C3u == buffer->cur (1).codepoint; 120 break; 121 case 0x098Cu: 122 matched = 0x09E2u == buffer->cur (1).codepoint; 123 break; 124 } 125 (void) buffer->next_glyph (); 126 if (matched) _output_with_dotted_circle (buffer); 127 } 128 break; 129 130 case HB_SCRIPT_GURMUKHI: 131 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 132 { 133 bool matched = false; 134 switch (buffer->cur ().codepoint) 135 { 136 case 0x0A05u: 137 switch (buffer->cur (1).codepoint) 138 { 139 case 0x0A3Eu: case 0x0A48u: case 0x0A4Cu: 140 matched = true; 141 break; 142 } 143 break; 144 case 0x0A72u: 145 switch (buffer->cur (1).codepoint) 146 { 147 case 0x0A3Fu: case 0x0A40u: case 0x0A47u: 148 matched = true; 149 break; 150 } 151 break; 152 case 0x0A73u: 153 switch (buffer->cur (1).codepoint) 154 { 155 case 0x0A41u: case 0x0A42u: case 0x0A4Bu: 156 matched = true; 157 break; 158 } 159 break; 160 } 161 (void) buffer->next_glyph (); 162 if (matched) _output_with_dotted_circle (buffer); 163 } 164 break; 165 166 case HB_SCRIPT_GUJARATI: 167 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 168 { 169 bool matched = false; 170 switch (buffer->cur ().codepoint) 171 { 172 case 0x0A85u: 173 switch (buffer->cur (1).codepoint) 174 { 175 case 0x0ABEu: case 0x0AC5u: case 0x0AC7u: case 0x0AC8u: 176 case 0x0AC9u: case 0x0ACBu: case 0x0ACCu: 177 matched = true; 178 break; 179 } 180 break; 181 case 0x0AC5u: 182 matched = 0x0ABEu == buffer->cur (1).codepoint; 183 break; 184 } 185 (void) buffer->next_glyph (); 186 if (matched) _output_with_dotted_circle (buffer); 187 } 188 break; 189 190 case HB_SCRIPT_ORIYA: 191 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 192 { 193 bool matched = false; 194 switch (buffer->cur ().codepoint) 195 { 196 case 0x0B05u: 197 matched = 0x0B3Eu == buffer->cur (1).codepoint; 198 break; 199 case 0x0B0Fu: case 0x0B13u: 200 matched = 0x0B57u == buffer->cur (1).codepoint; 201 break; 202 } 203 (void) buffer->next_glyph (); 204 if (matched) _output_with_dotted_circle (buffer); 205 } 206 break; 207 208 case HB_SCRIPT_TAMIL: 209 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 210 { 211 bool matched = false; 212 if (0x0B85u == buffer->cur ().codepoint && 213 0x0BC2u == buffer->cur (1).codepoint) 214 { 215 matched = true; 216 } 217 (void) buffer->next_glyph (); 218 if (matched) _output_with_dotted_circle (buffer); 219 } 220 break; 221 222 case HB_SCRIPT_TELUGU: 223 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 224 { 225 bool matched = false; 226 switch (buffer->cur ().codepoint) 227 { 228 case 0x0C12u: 229 switch (buffer->cur (1).codepoint) 230 { 231 case 0x0C4Cu: case 0x0C55u: 232 matched = true; 233 break; 234 } 235 break; 236 case 0x0C3Fu: case 0x0C46u: case 0x0C4Au: 237 matched = 0x0C55u == buffer->cur (1).codepoint; 238 break; 239 } 240 (void) buffer->next_glyph (); 241 if (matched) _output_with_dotted_circle (buffer); 242 } 243 break; 244 245 case HB_SCRIPT_KANNADA: 246 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 247 { 248 bool matched = false; 249 switch (buffer->cur ().codepoint) 250 { 251 case 0x0C89u: case 0x0C8Bu: 252 matched = 0x0CBEu == buffer->cur (1).codepoint; 253 break; 254 case 0x0C92u: 255 matched = 0x0CCCu == buffer->cur (1).codepoint; 256 break; 257 } 258 (void) buffer->next_glyph (); 259 if (matched) _output_with_dotted_circle (buffer); 260 } 261 break; 262 263 case HB_SCRIPT_MALAYALAM: 264 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 265 { 266 bool matched = false; 267 switch (buffer->cur ().codepoint) 268 { 269 case 0x0D07u: case 0x0D09u: 270 matched = 0x0D57u == buffer->cur (1).codepoint; 271 break; 272 case 0x0D0Eu: 273 matched = 0x0D46u == buffer->cur (1).codepoint; 274 break; 275 case 0x0D12u: 276 switch (buffer->cur (1).codepoint) 277 { 278 case 0x0D3Eu: case 0x0D57u: 279 matched = true; 280 break; 281 } 282 break; 283 } 284 (void) buffer->next_glyph (); 285 if (matched) _output_with_dotted_circle (buffer); 286 } 287 break; 288 289 case HB_SCRIPT_SINHALA: 290 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 291 { 292 bool matched = false; 293 switch (buffer->cur ().codepoint) 294 { 295 case 0x0D85u: 296 switch (buffer->cur (1).codepoint) 297 { 298 case 0x0DCFu: case 0x0DD0u: case 0x0DD1u: 299 matched = true; 300 break; 301 } 302 break; 303 case 0x0D8Bu: case 0x0D8Fu: case 0x0D94u: 304 matched = 0x0DDFu == buffer->cur (1).codepoint; 305 break; 306 case 0x0D8Du: 307 matched = 0x0DD8u == buffer->cur (1).codepoint; 308 break; 309 case 0x0D91u: 310 switch (buffer->cur (1).codepoint) 311 { 312 case 0x0DCAu: case 0x0DD9u: case 0x0DDAu: case 0x0DDCu: 313 case 0x0DDDu: case 0x0DDEu: 314 matched = true; 315 break; 316 } 317 break; 318 } 319 (void) buffer->next_glyph (); 320 if (matched) _output_with_dotted_circle (buffer); 321 } 322 break; 323 324 case HB_SCRIPT_BRAHMI: 325 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 326 { 327 bool matched = false; 328 switch (buffer->cur ().codepoint) 329 { 330 case 0x11005u: 331 matched = 0x11038u == buffer->cur (1).codepoint; 332 break; 333 case 0x1100Bu: 334 matched = 0x1103Eu == buffer->cur (1).codepoint; 335 break; 336 case 0x1100Fu: 337 matched = 0x11042u == buffer->cur (1).codepoint; 338 break; 339 } 340 (void) buffer->next_glyph (); 341 if (matched) _output_with_dotted_circle (buffer); 342 } 343 break; 344 345 case HB_SCRIPT_KHOJKI: 346 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 347 { 348 bool matched = false; 349 switch (buffer->cur ().codepoint) 350 { 351 case 0x11200u: 352 switch (buffer->cur (1).codepoint) 353 { 354 case 0x1122Cu: case 0x11231u: case 0x11233u: 355 matched = true; 356 break; 357 } 358 break; 359 case 0x11206u: 360 matched = 0x1122Cu == buffer->cur (1).codepoint; 361 break; 362 case 0x1122Cu: 363 switch (buffer->cur (1).codepoint) 364 { 365 case 0x11230u: case 0x11231u: 366 matched = true; 367 break; 368 } 369 break; 370 case 0x11240u: 371 matched = 0x1122Eu == buffer->cur (1).codepoint; 372 break; 373 } 374 (void) buffer->next_glyph (); 375 if (matched) _output_with_dotted_circle (buffer); 376 } 377 break; 378 379 case HB_SCRIPT_KHUDAWADI: 380 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 381 { 382 bool matched = false; 383 switch (buffer->cur ().codepoint) 384 { 385 case 0x112B0u: 386 switch (buffer->cur (1).codepoint) 387 { 388 case 0x112E0u: case 0x112E5u: case 0x112E6u: case 0x112E7u: 389 case 0x112E8u: 390 matched = true; 391 break; 392 } 393 break; 394 } 395 (void) buffer->next_glyph (); 396 if (matched) _output_with_dotted_circle (buffer); 397 } 398 break; 399 400 case HB_SCRIPT_TIRHUTA: 401 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 402 { 403 bool matched = false; 404 switch (buffer->cur ().codepoint) 405 { 406 case 0x11481u: 407 matched = 0x114B0u == buffer->cur (1).codepoint; 408 break; 409 case 0x1148Bu: case 0x1148Du: 410 matched = 0x114BAu == buffer->cur (1).codepoint; 411 break; 412 case 0x114AAu: 413 switch (buffer->cur (1).codepoint) 414 { 415 case 0x114B5u: case 0x114B6u: 416 matched = true; 417 break; 418 } 419 break; 420 } 421 (void) buffer->next_glyph (); 422 if (matched) _output_with_dotted_circle (buffer); 423 } 424 break; 425 426 case HB_SCRIPT_MODI: 427 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 428 { 429 bool matched = false; 430 switch (buffer->cur ().codepoint) 431 { 432 case 0x11600u: case 0x11601u: 433 switch (buffer->cur (1).codepoint) 434 { 435 case 0x11639u: case 0x1163Au: 436 matched = true; 437 break; 438 } 439 break; 440 } 441 (void) buffer->next_glyph (); 442 if (matched) _output_with_dotted_circle (buffer); 443 } 444 break; 445 446 case HB_SCRIPT_TAKRI: 447 for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;) 448 { 449 bool matched = false; 450 switch (buffer->cur ().codepoint) 451 { 452 case 0x11680u: 453 switch (buffer->cur (1).codepoint) 454 { 455 case 0x116ADu: case 0x116B4u: case 0x116B5u: 456 matched = true; 457 break; 458 } 459 break; 460 case 0x11686u: 461 matched = 0x116B2u == buffer->cur (1).codepoint; 462 break; 463 } 464 (void) buffer->next_glyph (); 465 if (matched) _output_with_dotted_circle (buffer); 466 } 467 break; 468 469 default: 470 break; 471 } 472 buffer->sync (); 473 } 474 475 476 #endif 477 /* == End of generated functions == */