1 /*- 2 * Copyright (c) 2009, 2014 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Ed Schouten under sponsorship from the 6 * FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/types.h> 34 #include <sys/fnv_hash.h> 35 #include <sys/endian.h> 36 #include <sys/param.h> 37 #include <sys/queue.h> 38 39 #include <assert.h> 40 #include <err.h> 41 #include <stdint.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 #define VFNT_MAPS 4 48 #define VFNT_MAP_NORMAL 0 49 #define VFNT_MAP_NORMAL_RH 1 50 #define VFNT_MAP_BOLD 2 51 #define VFNT_MAP_BOLD_RH 3 52 53 static unsigned int width = 8, wbytes, height = 16; 54 55 struct glyph { 56 TAILQ_ENTRY(glyph) g_list; 57 SLIST_ENTRY(glyph) g_hash; 58 uint8_t *g_data; 59 unsigned int g_index; 60 }; 61 62 #define FONTCVT_NHASH 4096 63 TAILQ_HEAD(glyph_list, glyph); 64 static SLIST_HEAD(, glyph) glyph_hash[FONTCVT_NHASH]; 65 static struct glyph_list glyphs[VFNT_MAPS] = { 66 TAILQ_HEAD_INITIALIZER(glyphs[0]), 67 TAILQ_HEAD_INITIALIZER(glyphs[1]), 68 TAILQ_HEAD_INITIALIZER(glyphs[2]), 69 TAILQ_HEAD_INITIALIZER(glyphs[3]), 70 }; 71 static unsigned int glyph_total, glyph_count[4], glyph_unique, glyph_dupe; 72 73 struct mapping { 74 TAILQ_ENTRY(mapping) m_list; 75 unsigned int m_char; 76 unsigned int m_length; 77 struct glyph *m_glyph; 78 }; 79 80 TAILQ_HEAD(mapping_list, mapping); 81 static struct mapping_list maps[VFNT_MAPS] = { 82 TAILQ_HEAD_INITIALIZER(maps[0]), 83 TAILQ_HEAD_INITIALIZER(maps[1]), 84 TAILQ_HEAD_INITIALIZER(maps[2]), 85 TAILQ_HEAD_INITIALIZER(maps[3]), 86 }; 87 static unsigned int mapping_total, map_count[4], map_folded_count[4], 88 mapping_unique, mapping_dupe; 89 90 static void 91 usage(void) 92 { 93 94 (void)fprintf(stderr, 95 "usage: vtfontcvt [-w width] [-h height] [-v] normal.bdf [bold.bdf] out.fnt\n"); 96 exit(1); 97 } 98 99 static void * 100 xmalloc(size_t size) 101 { 102 void *m; 103 104 if ((m = malloc(size)) == NULL) 105 errx(1, "memory allocation failure"); 106 return (m); 107 } 108 109 static int 110 add_mapping(struct glyph *gl, unsigned int c, unsigned int map_idx) 111 { 112 struct mapping *mp; 113 struct mapping_list *ml; 114 115 mapping_total++; 116 117 mp = xmalloc(sizeof *mp); 118 mp->m_char = c; 119 mp->m_glyph = gl; 120 mp->m_length = 0; 121 122 ml = &maps[map_idx]; 123 if (TAILQ_LAST(ml, mapping_list) != NULL && 124 TAILQ_LAST(ml, mapping_list)->m_char >= c) 125 errx(1, "Bad ordering at character %u", c); 126 TAILQ_INSERT_TAIL(ml, mp, m_list); 127 128 map_count[map_idx]++; 129 mapping_unique++; 130 131 return (0); 132 } 133 134 static int 135 dedup_mapping(unsigned int map_idx) 136 { 137 struct mapping *mp_bold, *mp_normal, *mp_temp; 138 unsigned normal_map_idx = map_idx - VFNT_MAP_BOLD; 139 140 assert(map_idx == VFNT_MAP_BOLD || map_idx == VFNT_MAP_BOLD_RH); 141 mp_normal = TAILQ_FIRST(&maps[normal_map_idx]); 142 TAILQ_FOREACH_SAFE(mp_bold, &maps[map_idx], m_list, mp_temp) { 143 while (mp_normal->m_char < mp_bold->m_char) 144 mp_normal = TAILQ_NEXT(mp_normal, m_list); 145 if (mp_bold->m_char != mp_normal->m_char) 146 errx(1, "Character %u not in normal font!", 147 mp_bold->m_char); 148 if (mp_bold->m_glyph != mp_normal->m_glyph) 149 continue; 150 151 /* No mapping is needed if it's equal to the normal mapping. */ 152 TAILQ_REMOVE(&maps[map_idx], mp_bold, m_list); 153 free(mp_bold); 154 mapping_dupe++; 155 } 156 return (0); 157 } 158 159 static struct glyph * 160 add_glyph(const uint8_t *bytes, unsigned int map_idx, int fallback) 161 { 162 struct glyph *gl; 163 int hash; 164 165 glyph_total++; 166 glyph_count[map_idx]++; 167 168 hash = fnv_32_buf(bytes, wbytes * height, FNV1_32_INIT) % FONTCVT_NHASH; 169 SLIST_FOREACH(gl, &glyph_hash[hash], g_hash) { 170 if (memcmp(gl->g_data, bytes, wbytes * height) == 0) { 171 glyph_dupe++; 172 return (gl); 173 } 174 } 175 176 gl = xmalloc(sizeof *gl); 177 gl->g_data = xmalloc(wbytes * height); 178 memcpy(gl->g_data, bytes, wbytes * height); 179 if (fallback) 180 TAILQ_INSERT_HEAD(&glyphs[map_idx], gl, g_list); 181 else 182 TAILQ_INSERT_TAIL(&glyphs[map_idx], gl, g_list); 183 SLIST_INSERT_HEAD(&glyph_hash[hash], gl, g_hash); 184 185 glyph_unique++; 186 return (gl); 187 } 188 189 static int 190 add_char(unsigned curchar, unsigned map_idx, uint8_t *bytes, uint8_t *bytes_r) 191 { 192 struct glyph *gl; 193 194 /* Prevent adding two glyphs for 0xFFFD */ 195 if (curchar == 0xFFFD) { 196 if (map_idx < VFNT_MAP_BOLD) 197 gl = add_glyph(bytes, 0, 1); 198 } else if (curchar >= 0x20) { 199 gl = add_glyph(bytes, map_idx, 0); 200 if (add_mapping(gl, curchar, map_idx) != 0) 201 return (1); 202 if (bytes_r != NULL) { 203 gl = add_glyph(bytes_r, map_idx + 1, 0); 204 if (add_mapping(gl, curchar, 205 map_idx + 1) != 0) 206 return (1); 207 } 208 } 209 return (0); 210 } 211 212 213 static int 214 parse_bitmap_line(uint8_t *left, uint8_t *right, unsigned int line, 215 unsigned int dwidth) 216 { 217 uint8_t *p; 218 unsigned int i, subline; 219 220 if (dwidth != width && dwidth != width * 2) 221 errx(1, "Bitmap with unsupported width %u!", dwidth); 222 223 /* Move pixel data right to simplify splitting double characters. */ 224 line >>= (howmany(dwidth, 8) * 8) - dwidth; 225 226 for (i = dwidth / width; i > 0; i--) { 227 p = (i == 2) ? right : left; 228 229 subline = line & ((1 << width) - 1); 230 subline <<= (howmany(width, 8) * 8) - width; 231 232 if (wbytes == 1) { 233 *p = subline; 234 } else if (wbytes == 2) { 235 *p++ = subline >> 8; 236 *p = subline; 237 } else { 238 errx(1, "Unsupported wbytes %u!", wbytes); 239 } 240 241 line >>= width; 242 } 243 244 return (0); 245 } 246 247 static int 248 parse_bdf(FILE *fp, unsigned int map_idx) 249 { 250 char *ln; 251 size_t length; 252 uint8_t bytes[wbytes * height], bytes_r[wbytes * height]; 253 unsigned int curchar = 0, dwidth = 0, i, line; 254 255 while ((ln = fgetln(fp, &length)) != NULL) { 256 ln[length - 1] = '\0'; 257 258 if (strncmp(ln, "ENCODING ", 9) == 0) { 259 curchar = atoi(ln + 9); 260 } 261 262 if (strncmp(ln, "DWIDTH ", 7) == 0) { 263 dwidth = atoi(ln + 7); 264 } 265 266 if (strncmp(ln, "BITMAP", 6) == 0 && 267 (ln[6] == ' ' || ln[6] == '\0')) { 268 for (i = 0; i < height; i++) { 269 if ((ln = fgetln(fp, &length)) == NULL) 270 errx(1, "Unexpected EOF!"); 271 ln[length - 1] = '\0'; 272 sscanf(ln, "%x", &line); 273 if (parse_bitmap_line(bytes + i * wbytes, 274 bytes_r + i * wbytes, line, dwidth) != 0) 275 return (1); 276 } 277 278 if (add_char(curchar, map_idx, bytes, 279 dwidth == width * 2 ? bytes_r : NULL) != 0) 280 return (1); 281 } 282 } 283 284 return (0); 285 } 286 287 static void 288 set_width(int w) 289 { 290 291 if (w <= 0 || w > 128) 292 errx(1, "invalid width %d", w); 293 width = w; 294 wbytes = howmany(width, 8); 295 } 296 297 static int 298 parse_hex(FILE *fp, unsigned int map_idx) 299 { 300 char *ln, *p; 301 char fmt_str[8]; 302 size_t length; 303 uint8_t *bytes = NULL, *bytes_r = NULL; 304 unsigned curchar = 0, i, line, chars_per_row, dwidth; 305 int rv = 0; 306 307 while ((ln = fgetln(fp, &length)) != NULL) { 308 ln[length - 1] = '\0'; 309 310 if (strncmp(ln, "# Height: ", 10) == 0) { 311 if (bytes != NULL) 312 errx(1, "malformed input: Height tag after font data"); 313 height = atoi(ln + 10); 314 } else if (strncmp(ln, "# Width: ", 9) == 0) { 315 if (bytes != NULL) 316 errx(1, "malformed input: Width tag after font data"); 317 set_width(atoi(ln + 9)); 318 } else if (sscanf(ln, "%6x:", &curchar)) { 319 if (bytes == NULL) { 320 bytes = xmalloc(wbytes * height); 321 bytes_r = xmalloc(wbytes * height); 322 } 323 /* ln is guaranteed to have a colon here. */ 324 p = strchr(ln, ':') + 1; 325 chars_per_row = strlen(p) / height; 326 dwidth = width; 327 if (chars_per_row / 2 > (width + 7) / 8) 328 dwidth *= 2; /* Double-width character. */ 329 snprintf(fmt_str, sizeof(fmt_str), "%%%ux", 330 chars_per_row); 331 332 for (i = 0; i < height; i++) { 333 sscanf(p, fmt_str, &line); 334 p += chars_per_row; 335 if (parse_bitmap_line(bytes + i * wbytes, 336 bytes_r + i * wbytes, line, dwidth) != 0) { 337 rv = 1; 338 goto out; 339 } 340 } 341 342 if (add_char(curchar, map_idx, bytes, 343 dwidth == width * 2 ? bytes_r : NULL) != 0) { 344 rv = 1; 345 goto out; 346 } 347 } 348 } 349 out: 350 free(bytes); 351 free(bytes_r); 352 return (rv); 353 } 354 355 static int 356 parse_file(const char *filename, unsigned int map_idx) 357 { 358 FILE *fp; 359 size_t len; 360 int rv; 361 362 fp = fopen(filename, "r"); 363 if (fp == NULL) { 364 perror(filename); 365 return (1); 366 } 367 len = strlen(filename); 368 if (len > 4 && strcasecmp(filename + len - 4, ".hex") == 0) 369 rv = parse_hex(fp, map_idx); 370 else 371 rv = parse_bdf(fp, map_idx); 372 fclose(fp); 373 return (rv); 374 } 375 376 static void 377 number_glyphs(void) 378 { 379 struct glyph *gl; 380 unsigned int i, idx = 0; 381 382 for (i = 0; i < VFNT_MAPS; i++) 383 TAILQ_FOREACH(gl, &glyphs[i], g_list) 384 gl->g_index = idx++; 385 } 386 387 static int 388 write_glyphs(FILE *fp) 389 { 390 struct glyph *gl; 391 unsigned int i; 392 393 for (i = 0; i < VFNT_MAPS; i++) { 394 TAILQ_FOREACH(gl, &glyphs[i], g_list) 395 if (fwrite(gl->g_data, wbytes * height, 1, fp) != 1) 396 return (1); 397 } 398 return (0); 399 } 400 401 static void 402 fold_mappings(unsigned int map_idx) 403 { 404 struct mapping_list *ml = &maps[map_idx]; 405 struct mapping *mn, *mp, *mbase; 406 407 mp = mbase = TAILQ_FIRST(ml); 408 for (mp = mbase = TAILQ_FIRST(ml); mp != NULL; mp = mn) { 409 mn = TAILQ_NEXT(mp, m_list); 410 if (mn != NULL && mn->m_char == mp->m_char + 1 && 411 mn->m_glyph->g_index == mp->m_glyph->g_index + 1) 412 continue; 413 mbase->m_length = mp->m_char - mbase->m_char + 1; 414 mbase = mp = mn; 415 map_folded_count[map_idx]++; 416 } 417 } 418 419 struct file_mapping { 420 uint32_t source; 421 uint16_t destination; 422 uint16_t length; 423 } __packed; 424 425 static int 426 write_mappings(FILE *fp, unsigned int map_idx) 427 { 428 struct mapping_list *ml = &maps[map_idx]; 429 struct mapping *mp; 430 struct file_mapping fm; 431 unsigned int i = 0, j = 0; 432 433 TAILQ_FOREACH(mp, ml, m_list) { 434 j++; 435 if (mp->m_length > 0) { 436 i += mp->m_length; 437 fm.source = htobe32(mp->m_char); 438 fm.destination = htobe16(mp->m_glyph->g_index); 439 fm.length = htobe16(mp->m_length - 1); 440 if (fwrite(&fm, sizeof fm, 1, fp) != 1) 441 return (1); 442 } 443 } 444 assert(i == j); 445 return (0); 446 } 447 448 struct file_header { 449 uint8_t magic[8]; 450 uint8_t width; 451 uint8_t height; 452 uint16_t pad; 453 uint32_t glyph_count; 454 uint32_t map_count[4]; 455 } __packed; 456 457 static int 458 write_fnt(const char *filename) 459 { 460 FILE *fp; 461 struct file_header fh = { 462 .magic = "VFNT0002", 463 }; 464 465 fp = fopen(filename, "wb"); 466 if (fp == NULL) { 467 perror(filename); 468 return (1); 469 } 470 471 fh.width = width; 472 fh.height = height; 473 fh.glyph_count = htobe32(glyph_unique); 474 fh.map_count[0] = htobe32(map_folded_count[0]); 475 fh.map_count[1] = htobe32(map_folded_count[1]); 476 fh.map_count[2] = htobe32(map_folded_count[2]); 477 fh.map_count[3] = htobe32(map_folded_count[3]); 478 if (fwrite(&fh, sizeof fh, 1, fp) != 1) { 479 perror(filename); 480 fclose(fp); 481 return (1); 482 } 483 484 if (write_glyphs(fp) != 0 || 485 write_mappings(fp, VFNT_MAP_NORMAL) != 0 || 486 write_mappings(fp, 1) != 0 || 487 write_mappings(fp, VFNT_MAP_BOLD) != 0 || 488 write_mappings(fp, 3) != 0) { 489 perror(filename); 490 fclose(fp); 491 return (1); 492 } 493 494 fclose(fp); 495 return (0); 496 } 497 498 static void 499 print_font_info(void) 500 { 501 printf( 502 "Statistics:\n" 503 "- glyph_total: %6u\n" 504 "- glyph_normal: %6u\n" 505 "- glyph_normal_right: %6u\n" 506 "- glyph_bold: %6u\n" 507 "- glyph_bold_right: %6u\n" 508 "- glyph_unique: %6u\n" 509 "- glyph_dupe: %6u\n" 510 "- mapping_total: %6u\n" 511 "- mapping_normal: %6u\n" 512 "- mapping_normal_folded: %6u\n" 513 "- mapping_normal_right: %6u\n" 514 "- mapping_normal_right_folded: %6u\n" 515 "- mapping_bold: %6u\n" 516 "- mapping_bold_folded: %6u\n" 517 "- mapping_bold_right: %6u\n" 518 "- mapping_bold_right_folded: %6u\n" 519 "- mapping_unique: %6u\n" 520 "- mapping_dupe: %6u\n", 521 glyph_total, 522 glyph_count[0], 523 glyph_count[1], 524 glyph_count[2], 525 glyph_count[3], 526 glyph_unique, glyph_dupe, 527 mapping_total, 528 map_count[0], map_folded_count[0], 529 map_count[1], map_folded_count[1], 530 map_count[2], map_folded_count[2], 531 map_count[3], map_folded_count[3], 532 mapping_unique, mapping_dupe); 533 } 534 535 int 536 main(int argc, char *argv[]) 537 { 538 int ch, val, verbose = 0; 539 540 assert(sizeof(struct file_header) == 32); 541 assert(sizeof(struct file_mapping) == 8); 542 543 while ((ch = getopt(argc, argv, "h:vw:")) != -1) { 544 switch (ch) { 545 case 'h': 546 val = atoi(optarg); 547 if (val <= 0 || val > 128) 548 errx(1, "Invalid height %d", val); 549 height = val; 550 break; 551 case 'v': 552 verbose = 1; 553 break; 554 case 'w': 555 set_width(atoi(optarg)); 556 break; 557 case '?': 558 default: 559 usage(); 560 } 561 } 562 argc -= optind; 563 argv += optind; 564 565 if (argc < 2 || argc > 3) 566 usage(); 567 568 wbytes = howmany(width, 8); 569 570 if (parse_file(argv[0], VFNT_MAP_NORMAL) != 0) 571 return (1); 572 argc--; 573 argv++; 574 if (argc == 2) { 575 if (parse_file(argv[0], VFNT_MAP_BOLD) != 0) 576 return (1); 577 argc--; 578 argv++; 579 } 580 number_glyphs(); 581 dedup_mapping(VFNT_MAP_BOLD); 582 dedup_mapping(VFNT_MAP_BOLD_RH); 583 fold_mappings(0); 584 fold_mappings(1); 585 fold_mappings(2); 586 fold_mappings(3); 587 if (write_fnt(argv[0]) != 0) 588 return (1); 589 590 if (verbose) 591 print_font_info(); 592 593 return (0); 594 } 595