1 /* Id: term_ps.c,v 1.55 2014/01/05 19:10:56 joerg Exp */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 #ifdef HAVE_CONFIG_H 18 #include "config.h" 19 #endif 20 21 #include <sys/types.h> 22 23 #include <assert.h> 24 #include <stdarg.h> 25 #include <stdint.h> 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <time.h> 30 #include <unistd.h> 31 32 #include "mandoc.h" 33 #include "out.h" 34 #include "main.h" 35 #include "term.h" 36 37 /* These work the buffer used by the header and footer. */ 38 #define PS_BUFSLOP 128 39 40 /* Convert PostScript point "x" to an AFM unit. */ 41 #define PNT2AFM(p, x) /* LINTED */ \ 42 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 43 44 /* Convert an AFM unit "x" to a PostScript points */ 45 #define AFM2PNT(p, x) /* LINTED */ \ 46 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 47 48 struct glyph { 49 unsigned short wx; /* WX in AFM */ 50 }; 51 52 struct font { 53 const char *name; /* FontName in AFM */ 54 #define MAXCHAR 95 /* total characters we can handle */ 55 struct glyph gly[MAXCHAR]; /* glyph metrics */ 56 }; 57 58 struct termp_ps { 59 int flags; 60 #define PS_INLINE (1 << 0) /* we're in a word */ 61 #define PS_MARGINS (1 << 1) /* we're in the margins */ 62 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 63 size_t pscol; /* visible column (AFM units) */ 64 size_t psrow; /* visible row (AFM units) */ 65 char *psmarg; /* margin buf */ 66 size_t psmargsz; /* margin buf size */ 67 size_t psmargcur; /* cur index in margin buf */ 68 char last; /* character buffer */ 69 enum termfont lastf; /* last set font */ 70 size_t scale; /* font scaling factor */ 71 size_t pages; /* number of pages shown */ 72 size_t lineheight; /* line height (AFM units) */ 73 size_t top; /* body top (AFM units) */ 74 size_t bottom; /* body bottom (AFM units) */ 75 size_t height; /* page height (AFM units */ 76 size_t width; /* page width (AFM units) */ 77 size_t left; /* body left (AFM units) */ 78 size_t header; /* header pos (AFM units) */ 79 size_t footer; /* footer pos (AFM units) */ 80 size_t pdfbytes; /* current output byte */ 81 size_t pdflastpg; /* byte of last page mark */ 82 size_t pdfbody; /* start of body object */ 83 size_t *pdfobjs; /* table of object offsets */ 84 size_t pdfobjsz; /* size of pdfobjs */ 85 }; 86 87 static double ps_hspan(const struct termp *, 88 const struct roffsu *); 89 static size_t ps_width(const struct termp *, int); 90 static void ps_advance(struct termp *, size_t); 91 static void ps_begin(struct termp *); 92 static void ps_closepage(struct termp *); 93 static void ps_end(struct termp *); 94 static void ps_endline(struct termp *); 95 static void ps_fclose(struct termp *); 96 static void ps_growbuf(struct termp *, size_t); 97 static void ps_letter(struct termp *, int); 98 static void ps_pclose(struct termp *); 99 static void ps_pletter(struct termp *, int); 100 #if __GNUC__ - 0 >= 4 101 __attribute__((__format__ (__printf__, 2, 3))) 102 #endif 103 static void ps_printf(struct termp *, const char *, ...); 104 static void ps_putchar(struct termp *, char); 105 static void ps_setfont(struct termp *, enum termfont); 106 static struct termp *pspdf_alloc(char *); 107 static void pdf_obj(struct termp *, size_t); 108 109 /* 110 * We define, for the time being, three fonts: bold, oblique/italic, and 111 * normal (roman). The following table hard-codes the font metrics for 112 * ASCII, i.e., 32--127. 113 */ 114 115 static const struct font fonts[TERMFONT__MAX] = { 116 { "Times-Roman", { 117 { 250 }, 118 { 333 }, 119 { 408 }, 120 { 500 }, 121 { 500 }, 122 { 833 }, 123 { 778 }, 124 { 333 }, 125 { 333 }, 126 { 333 }, 127 { 500 }, 128 { 564 }, 129 { 250 }, 130 { 333 }, 131 { 250 }, 132 { 278 }, 133 { 500 }, 134 { 500 }, 135 { 500 }, 136 { 500 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 278 }, 144 { 278 }, 145 { 564 }, 146 { 564 }, 147 { 564 }, 148 { 444 }, 149 { 921 }, 150 { 722 }, 151 { 667 }, 152 { 667 }, 153 { 722 }, 154 { 611 }, 155 { 556 }, 156 { 722 }, 157 { 722 }, 158 { 333 }, 159 { 389 }, 160 { 722 }, 161 { 611 }, 162 { 889 }, 163 { 722 }, 164 { 722 }, 165 { 556 }, 166 { 722 }, 167 { 667 }, 168 { 556 }, 169 { 611 }, 170 { 722 }, 171 { 722 }, 172 { 944 }, 173 { 722 }, 174 { 722 }, 175 { 611 }, 176 { 333 }, 177 { 278 }, 178 { 333 }, 179 { 469 }, 180 { 500 }, 181 { 333 }, 182 { 444 }, 183 { 500 }, 184 { 444 }, 185 { 500}, 186 { 444}, 187 { 333}, 188 { 500}, 189 { 500}, 190 { 278}, 191 { 278}, 192 { 500}, 193 { 278}, 194 { 778}, 195 { 500}, 196 { 500}, 197 { 500}, 198 { 500}, 199 { 333}, 200 { 389}, 201 { 278}, 202 { 500}, 203 { 500}, 204 { 722}, 205 { 500}, 206 { 500}, 207 { 444}, 208 { 480}, 209 { 200}, 210 { 480}, 211 { 541}, 212 } }, 213 { "Times-Bold", { 214 { 250 }, 215 { 333 }, 216 { 555 }, 217 { 500 }, 218 { 500 }, 219 { 1000 }, 220 { 833 }, 221 { 333 }, 222 { 333 }, 223 { 333 }, 224 { 500 }, 225 { 570 }, 226 { 250 }, 227 { 333 }, 228 { 250 }, 229 { 278 }, 230 { 500 }, 231 { 500 }, 232 { 500 }, 233 { 500 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 333 }, 241 { 333 }, 242 { 570 }, 243 { 570 }, 244 { 570 }, 245 { 500 }, 246 { 930 }, 247 { 722 }, 248 { 667 }, 249 { 722 }, 250 { 722 }, 251 { 667 }, 252 { 611 }, 253 { 778 }, 254 { 778 }, 255 { 389 }, 256 { 500 }, 257 { 778 }, 258 { 667 }, 259 { 944 }, 260 { 722 }, 261 { 778 }, 262 { 611 }, 263 { 778 }, 264 { 722 }, 265 { 556 }, 266 { 667 }, 267 { 722 }, 268 { 722 }, 269 { 1000 }, 270 { 722 }, 271 { 722 }, 272 { 667 }, 273 { 333 }, 274 { 278 }, 275 { 333 }, 276 { 581 }, 277 { 500 }, 278 { 333 }, 279 { 500 }, 280 { 556 }, 281 { 444 }, 282 { 556 }, 283 { 444 }, 284 { 333 }, 285 { 500 }, 286 { 556 }, 287 { 278 }, 288 { 333 }, 289 { 556 }, 290 { 278 }, 291 { 833 }, 292 { 556 }, 293 { 500 }, 294 { 556 }, 295 { 556 }, 296 { 444 }, 297 { 389 }, 298 { 333 }, 299 { 556 }, 300 { 500 }, 301 { 722 }, 302 { 500 }, 303 { 500 }, 304 { 444 }, 305 { 394 }, 306 { 220 }, 307 { 394 }, 308 { 520 }, 309 } }, 310 { "Times-Italic", { 311 { 250 }, 312 { 333 }, 313 { 420 }, 314 { 500 }, 315 { 500 }, 316 { 833 }, 317 { 778 }, 318 { 333 }, 319 { 333 }, 320 { 333 }, 321 { 500 }, 322 { 675 }, 323 { 250 }, 324 { 333 }, 325 { 250 }, 326 { 278 }, 327 { 500 }, 328 { 500 }, 329 { 500 }, 330 { 500 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 333 }, 338 { 333 }, 339 { 675 }, 340 { 675 }, 341 { 675 }, 342 { 500 }, 343 { 920 }, 344 { 611 }, 345 { 611 }, 346 { 667 }, 347 { 722 }, 348 { 611 }, 349 { 611 }, 350 { 722 }, 351 { 722 }, 352 { 333 }, 353 { 444 }, 354 { 667 }, 355 { 556 }, 356 { 833 }, 357 { 667 }, 358 { 722 }, 359 { 611 }, 360 { 722 }, 361 { 611 }, 362 { 500 }, 363 { 556 }, 364 { 722 }, 365 { 611 }, 366 { 833 }, 367 { 611 }, 368 { 556 }, 369 { 556 }, 370 { 389 }, 371 { 278 }, 372 { 389 }, 373 { 422 }, 374 { 500 }, 375 { 333 }, 376 { 500 }, 377 { 500 }, 378 { 444 }, 379 { 500 }, 380 { 444 }, 381 { 278 }, 382 { 500 }, 383 { 500 }, 384 { 278 }, 385 { 278 }, 386 { 444 }, 387 { 278 }, 388 { 722 }, 389 { 500 }, 390 { 500 }, 391 { 500 }, 392 { 500 }, 393 { 389 }, 394 { 389 }, 395 { 278 }, 396 { 500 }, 397 { 444 }, 398 { 667 }, 399 { 444 }, 400 { 444 }, 401 { 389 }, 402 { 400 }, 403 { 275 }, 404 { 400 }, 405 { 541 }, 406 } }, 407 }; 408 409 void * 410 pdf_alloc(char *outopts) 411 { 412 struct termp *p; 413 414 if (NULL != (p = pspdf_alloc(outopts))) 415 p->type = TERMTYPE_PDF; 416 417 return(p); 418 } 419 420 void * 421 ps_alloc(char *outopts) 422 { 423 struct termp *p; 424 425 if (NULL != (p = pspdf_alloc(outopts))) 426 p->type = TERMTYPE_PS; 427 428 return(p); 429 } 430 431 static struct termp * 432 pspdf_alloc(char *outopts) 433 { 434 struct termp *p; 435 unsigned int pagex, pagey; 436 size_t marginx, marginy, lineheight; 437 const char *toks[2]; 438 const char *pp; 439 char *v; 440 441 p = mandoc_calloc(1, sizeof(struct termp)); 442 p->enc = TERMENC_ASCII; 443 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 444 445 p->advance = ps_advance; 446 p->begin = ps_begin; 447 p->end = ps_end; 448 p->endline = ps_endline; 449 p->hspan = ps_hspan; 450 p->letter = ps_letter; 451 p->width = ps_width; 452 453 toks[0] = "paper"; 454 toks[1] = NULL; 455 456 pp = NULL; 457 458 while (outopts && *outopts) 459 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 460 case (0): 461 pp = v; 462 break; 463 default: 464 break; 465 } 466 467 /* Default to US letter (millimetres). */ 468 469 pagex = 216; 470 pagey = 279; 471 472 /* 473 * The ISO-269 paper sizes can be calculated automatically, but 474 * it would require bringing in -lm for pow() and I'd rather not 475 * do that. So just do it the easy way for now. Since this 476 * only happens once, I'm not terribly concerned. 477 */ 478 479 if (pp && strcasecmp(pp, "letter")) { 480 if (0 == strcasecmp(pp, "a3")) { 481 pagex = 297; 482 pagey = 420; 483 } else if (0 == strcasecmp(pp, "a4")) { 484 pagex = 210; 485 pagey = 297; 486 } else if (0 == strcasecmp(pp, "a5")) { 487 pagex = 148; 488 pagey = 210; 489 } else if (0 == strcasecmp(pp, "legal")) { 490 pagex = 216; 491 pagey = 356; 492 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 493 fprintf(stderr, "%s: Unknown paper\n", pp); 494 } 495 496 /* 497 * This MUST be defined before any PNT2AFM or AFM2PNT 498 * calculations occur. 499 */ 500 501 p->ps->scale = 11; 502 503 /* Remember millimetres -> AFM units. */ 504 505 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 506 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 507 508 /* Margins are 1/9 the page x and y. */ 509 510 marginx = /* LINTED */ 511 (size_t)((double)pagex / 9.0); 512 marginy = /* LINTED */ 513 (size_t)((double)pagey / 9.0); 514 515 /* Line-height is 1.4em. */ 516 517 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 518 519 p->ps->width = (size_t)pagex; 520 p->ps->height = (size_t)pagey; 521 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 522 p->ps->top = pagey - marginy; 523 p->ps->footer = (marginy / 2) - (lineheight / 2); 524 p->ps->bottom = marginy; 525 p->ps->left = marginx; 526 p->ps->lineheight = lineheight; 527 528 p->defrmargin = pagex - (marginx * 2); 529 return(p); 530 } 531 532 533 void 534 pspdf_free(void *arg) 535 { 536 struct termp *p; 537 538 p = (struct termp *)arg; 539 540 if (p->ps->psmarg) 541 free(p->ps->psmarg); 542 if (p->ps->pdfobjs) 543 free(p->ps->pdfobjs); 544 545 free(p->ps); 546 term_free(p); 547 } 548 549 550 static void 551 ps_printf(struct termp *p, const char *fmt, ...) 552 { 553 va_list ap; 554 int pos, len; 555 556 va_start(ap, fmt); 557 558 /* 559 * If we're running in regular mode, then pipe directly into 560 * vprintf(). If we're processing margins, then push the data 561 * into our growable margin buffer. 562 */ 563 564 if ( ! (PS_MARGINS & p->ps->flags)) { 565 len = vprintf(fmt, ap); 566 va_end(ap); 567 p->ps->pdfbytes += /* LINTED */ 568 len < 0 ? 0 : (size_t)len; 569 return; 570 } 571 572 /* 573 * XXX: I assume that the in-margin print won't exceed 574 * PS_BUFSLOP (128 bytes), which is reasonable but still an 575 * assumption that will cause pukeage if it's not the case. 576 */ 577 578 ps_growbuf(p, PS_BUFSLOP); 579 580 pos = (int)p->ps->psmargcur; 581 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 582 583 va_end(ap); 584 585 p->ps->psmargcur = strlen(p->ps->psmarg); 586 } 587 588 589 static void 590 ps_putchar(struct termp *p, char c) 591 { 592 int pos; 593 594 /* See ps_printf(). */ 595 596 if ( ! (PS_MARGINS & p->ps->flags)) { 597 /* LINTED */ 598 putchar(c); 599 p->ps->pdfbytes++; 600 return; 601 } 602 603 ps_growbuf(p, 2); 604 605 pos = (int)p->ps->psmargcur++; 606 p->ps->psmarg[pos++] = c; 607 p->ps->psmarg[pos] = '\0'; 608 } 609 610 611 static void 612 pdf_obj(struct termp *p, size_t obj) 613 { 614 615 assert(obj > 0); 616 617 if ((obj - 1) >= p->ps->pdfobjsz) { 618 p->ps->pdfobjsz = obj + 128; 619 p->ps->pdfobjs = realloc 620 (p->ps->pdfobjs, 621 p->ps->pdfobjsz * sizeof(size_t)); 622 if (NULL == p->ps->pdfobjs) { 623 perror(NULL); 624 exit((int)MANDOCLEVEL_SYSERR); 625 } 626 } 627 628 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 629 ps_printf(p, "%zu 0 obj\n", obj); 630 } 631 632 633 static void 634 ps_closepage(struct termp *p) 635 { 636 int i; 637 size_t len, base; 638 639 /* 640 * Close out a page that we've already flushed to output. In 641 * PostScript, we simply note that the page must be showed. In 642 * PDF, we must now create the Length, Resource, and Page node 643 * for the page contents. 644 */ 645 646 assert(p->ps->psmarg && p->ps->psmarg[0]); 647 ps_printf(p, "%s", p->ps->psmarg); 648 649 if (TERMTYPE_PS != p->type) { 650 ps_printf(p, "ET\n"); 651 652 len = p->ps->pdfbytes - p->ps->pdflastpg; 653 base = p->ps->pages * 4 + p->ps->pdfbody; 654 655 ps_printf(p, "endstream\nendobj\n"); 656 657 /* Length of content. */ 658 pdf_obj(p, base + 1); 659 ps_printf(p, "%zu\nendobj\n", len); 660 661 /* Resource for content. */ 662 pdf_obj(p, base + 2); 663 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 664 ps_printf(p, "/Font <<\n"); 665 for (i = 0; i < (int)TERMFONT__MAX; i++) 666 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 667 ps_printf(p, ">>\n>>\n"); 668 669 /* Page node. */ 670 pdf_obj(p, base + 3); 671 ps_printf(p, "<<\n"); 672 ps_printf(p, "/Type /Page\n"); 673 ps_printf(p, "/Parent 2 0 R\n"); 674 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 675 ps_printf(p, "/Contents %zu 0 R\n", base); 676 ps_printf(p, ">>\nendobj\n"); 677 } else 678 ps_printf(p, "showpage\n"); 679 680 p->ps->pages++; 681 p->ps->psrow = p->ps->top; 682 assert( ! (PS_NEWPAGE & p->ps->flags)); 683 p->ps->flags |= PS_NEWPAGE; 684 } 685 686 687 /* ARGSUSED */ 688 static void 689 ps_end(struct termp *p) 690 { 691 size_t i, xref, base; 692 693 /* 694 * At the end of the file, do one last showpage. This is the 695 * same behaviour as groff(1) and works for multiple pages as 696 * well as just one. 697 */ 698 699 if ( ! (PS_NEWPAGE & p->ps->flags)) { 700 assert(0 == p->ps->flags); 701 assert('\0' == p->ps->last); 702 ps_closepage(p); 703 } 704 705 if (TERMTYPE_PS == p->type) { 706 ps_printf(p, "%%%%Trailer\n"); 707 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 708 ps_printf(p, "%%%%EOF\n"); 709 return; 710 } 711 712 pdf_obj(p, 2); 713 ps_printf(p, "<<\n/Type /Pages\n"); 714 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 715 (size_t)AFM2PNT(p, p->ps->width), 716 (size_t)AFM2PNT(p, p->ps->height)); 717 718 ps_printf(p, "/Count %zu\n", p->ps->pages); 719 ps_printf(p, "/Kids ["); 720 721 for (i = 0; i < p->ps->pages; i++) 722 ps_printf(p, " %zu 0 R", i * 4 + 723 p->ps->pdfbody + 3); 724 725 base = (p->ps->pages - 1) * 4 + 726 p->ps->pdfbody + 4; 727 728 ps_printf(p, "]\n>>\nendobj\n"); 729 pdf_obj(p, base); 730 ps_printf(p, "<<\n"); 731 ps_printf(p, "/Type /Catalog\n"); 732 ps_printf(p, "/Pages 2 0 R\n"); 733 ps_printf(p, ">>\n"); 734 xref = p->ps->pdfbytes; 735 ps_printf(p, "xref\n"); 736 ps_printf(p, "0 %zu\n", base + 1); 737 ps_printf(p, "0000000000 65535 f \n"); 738 739 for (i = 0; i < base; i++) 740 ps_printf(p, "%.10zu 00000 n \n", 741 p->ps->pdfobjs[(int)i]); 742 743 ps_printf(p, "trailer\n"); 744 ps_printf(p, "<<\n"); 745 ps_printf(p, "/Size %zu\n", base + 1); 746 ps_printf(p, "/Root %zu 0 R\n", base); 747 ps_printf(p, "/Info 1 0 R\n"); 748 ps_printf(p, ">>\n"); 749 ps_printf(p, "startxref\n"); 750 ps_printf(p, "%zu\n", xref); 751 ps_printf(p, "%%%%EOF\n"); 752 } 753 754 755 static void 756 ps_begin(struct termp *p) 757 { 758 time_t t; 759 int i; 760 761 /* 762 * Print margins into margin buffer. Nothing gets output to the 763 * screen yet, so we don't need to initialise the primary state. 764 */ 765 766 if (p->ps->psmarg) { 767 assert(p->ps->psmargsz); 768 p->ps->psmarg[0] = '\0'; 769 } 770 771 /*p->ps->pdfbytes = 0;*/ 772 p->ps->psmargcur = 0; 773 p->ps->flags = PS_MARGINS; 774 p->ps->pscol = p->ps->left; 775 p->ps->psrow = p->ps->header; 776 777 ps_setfont(p, TERMFONT_NONE); 778 779 (*p->headf)(p, p->argf); 780 (*p->endline)(p); 781 782 p->ps->pscol = p->ps->left; 783 p->ps->psrow = p->ps->footer; 784 785 (*p->footf)(p, p->argf); 786 (*p->endline)(p); 787 788 p->ps->flags &= ~PS_MARGINS; 789 790 assert(0 == p->ps->flags); 791 assert(p->ps->psmarg); 792 assert('\0' != p->ps->psmarg[0]); 793 794 /* 795 * Print header and initialise page state. Following this, 796 * stuff gets printed to the screen, so make sure we're sane. 797 */ 798 799 t = time(NULL); 800 801 if (TERMTYPE_PS == p->type) { 802 ps_printf(p, "%%!PS-Adobe-3.0\n"); 803 ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); 804 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 805 ps_printf(p, "%%%%Orientation: Portrait\n"); 806 ps_printf(p, "%%%%Pages: (atend)\n"); 807 ps_printf(p, "%%%%PageOrder: Ascend\n"); 808 ps_printf(p, "%%%%DocumentMedia: " 809 "Default %zu %zu 0 () ()\n", 810 (size_t)AFM2PNT(p, p->ps->width), 811 (size_t)AFM2PNT(p, p->ps->height)); 812 ps_printf(p, "%%%%DocumentNeededResources: font"); 813 814 for (i = 0; i < (int)TERMFONT__MAX; i++) 815 ps_printf(p, " %s", fonts[i].name); 816 817 ps_printf(p, "\n%%%%EndComments\n"); 818 } else { 819 ps_printf(p, "%%PDF-1.1\n"); 820 pdf_obj(p, 1); 821 ps_printf(p, "<<\n"); 822 ps_printf(p, ">>\n"); 823 ps_printf(p, "endobj\n"); 824 825 for (i = 0; i < (int)TERMFONT__MAX; i++) { 826 pdf_obj(p, (size_t)i + 3); 827 ps_printf(p, "<<\n"); 828 ps_printf(p, "/Type /Font\n"); 829 ps_printf(p, "/Subtype /Type1\n"); 830 ps_printf(p, "/Name /F%d\n", i); 831 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 832 ps_printf(p, ">>\n"); 833 } 834 } 835 836 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 837 p->ps->pscol = p->ps->left; 838 p->ps->psrow = p->ps->top; 839 p->ps->flags |= PS_NEWPAGE; 840 ps_setfont(p, TERMFONT_NONE); 841 } 842 843 844 static void 845 ps_pletter(struct termp *p, int c) 846 { 847 int f; 848 849 /* 850 * If we haven't opened a page context, then output that we're 851 * in a new page and make sure the font is correctly set. 852 */ 853 854 if (PS_NEWPAGE & p->ps->flags) { 855 if (TERMTYPE_PS == p->type) { 856 ps_printf(p, "%%%%Page: %zu %zu\n", 857 p->ps->pages + 1, 858 p->ps->pages + 1); 859 ps_printf(p, "/%s %zu selectfont\n", 860 fonts[(int)p->ps->lastf].name, 861 p->ps->scale); 862 } else { 863 pdf_obj(p, p->ps->pdfbody + 864 p->ps->pages * 4); 865 ps_printf(p, "<<\n"); 866 ps_printf(p, "/Length %zu 0 R\n", 867 p->ps->pdfbody + 1 + 868 p->ps->pages * 4); 869 ps_printf(p, ">>\nstream\n"); 870 } 871 p->ps->pdflastpg = p->ps->pdfbytes; 872 p->ps->flags &= ~PS_NEWPAGE; 873 } 874 875 /* 876 * If we're not in a PostScript "word" context, then open one 877 * now at the current cursor. 878 */ 879 880 if ( ! (PS_INLINE & p->ps->flags)) { 881 if (TERMTYPE_PS != p->type) { 882 ps_printf(p, "BT\n/F%d %zu Tf\n", 883 (int)p->ps->lastf, 884 p->ps->scale); 885 ps_printf(p, "%.3f %.3f Td\n(", 886 AFM2PNT(p, p->ps->pscol), 887 AFM2PNT(p, p->ps->psrow)); 888 } else 889 ps_printf(p, "%.3f %.3f moveto\n(", 890 AFM2PNT(p, p->ps->pscol), 891 AFM2PNT(p, p->ps->psrow)); 892 p->ps->flags |= PS_INLINE; 893 } 894 895 assert( ! (PS_NEWPAGE & p->ps->flags)); 896 897 /* 898 * We need to escape these characters as per the PostScript 899 * specification. We would also escape non-graphable characters 900 * (like tabs), but none of them would get to this point and 901 * it's superfluous to abort() on them. 902 */ 903 904 switch (c) { 905 case ('('): 906 /* FALLTHROUGH */ 907 case (')'): 908 /* FALLTHROUGH */ 909 case ('\\'): 910 ps_putchar(p, '\\'); 911 break; 912 default: 913 break; 914 } 915 916 /* Write the character and adjust where we are on the page. */ 917 918 f = (int)p->ps->lastf; 919 920 if (c <= 32 || (c - 32 >= MAXCHAR)) { 921 ps_putchar(p, ' '); 922 p->ps->pscol += (size_t)fonts[f].gly[0].wx; 923 return; 924 } 925 926 ps_putchar(p, (char)c); 927 c -= 32; 928 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 929 } 930 931 932 static void 933 ps_pclose(struct termp *p) 934 { 935 936 /* 937 * Spit out that we're exiting a word context (this is a 938 * "partial close" because we don't check the last-char buffer 939 * or anything). 940 */ 941 942 if ( ! (PS_INLINE & p->ps->flags)) 943 return; 944 945 if (TERMTYPE_PS != p->type) { 946 ps_printf(p, ") Tj\nET\n"); 947 } else 948 ps_printf(p, ") show\n"); 949 950 p->ps->flags &= ~PS_INLINE; 951 } 952 953 954 static void 955 ps_fclose(struct termp *p) 956 { 957 958 /* 959 * Strong closure: if we have a last-char, spit it out after 960 * checking that we're in the right font mode. This will of 961 * course open a new scope, if applicable. 962 * 963 * Following this, close out any scope that's open. 964 */ 965 966 if ('\0' != p->ps->last) { 967 if (p->ps->lastf != TERMFONT_NONE) { 968 ps_pclose(p); 969 ps_setfont(p, TERMFONT_NONE); 970 } 971 ps_pletter(p, p->ps->last); 972 p->ps->last = '\0'; 973 } 974 975 if ( ! (PS_INLINE & p->ps->flags)) 976 return; 977 978 ps_pclose(p); 979 } 980 981 982 static void 983 ps_letter(struct termp *p, int arg) 984 { 985 char cc, c; 986 987 /* LINTED */ 988 c = arg >= 128 || arg <= 0 ? '?' : arg; 989 990 /* 991 * State machine dictates whether to buffer the last character 992 * or not. Basically, encoded words are detected by checking if 993 * we're an "8" and switching on the buffer. Then we put "8" in 994 * our buffer, and on the next charater, flush both character 995 * and buffer. Thus, "regular" words are detected by having a 996 * regular character and a regular buffer character. 997 */ 998 999 if ('\0' == p->ps->last) { 1000 assert(8 != c); 1001 p->ps->last = c; 1002 return; 1003 } else if (8 == p->ps->last) { 1004 assert(8 != c); 1005 p->ps->last = '\0'; 1006 } else if (8 == c) { 1007 assert(8 != p->ps->last); 1008 if ('_' == p->ps->last) { 1009 if (p->ps->lastf != TERMFONT_UNDER) { 1010 ps_pclose(p); 1011 ps_setfont(p, TERMFONT_UNDER); 1012 } 1013 } else if (p->ps->lastf != TERMFONT_BOLD) { 1014 ps_pclose(p); 1015 ps_setfont(p, TERMFONT_BOLD); 1016 } 1017 p->ps->last = c; 1018 return; 1019 } else { 1020 if (p->ps->lastf != TERMFONT_NONE) { 1021 ps_pclose(p); 1022 ps_setfont(p, TERMFONT_NONE); 1023 } 1024 cc = p->ps->last; 1025 p->ps->last = c; 1026 c = cc; 1027 } 1028 1029 ps_pletter(p, c); 1030 } 1031 1032 1033 static void 1034 ps_advance(struct termp *p, size_t len) 1035 { 1036 1037 /* 1038 * Advance some spaces. This can probably be made smarter, 1039 * i.e., to have multiple space-separated words in the same 1040 * scope, but this is easier: just close out the current scope 1041 * and readjust our column settings. 1042 */ 1043 1044 ps_fclose(p); 1045 p->ps->pscol += len; 1046 } 1047 1048 1049 static void 1050 ps_endline(struct termp *p) 1051 { 1052 1053 /* Close out any scopes we have open: we're at eoln. */ 1054 1055 ps_fclose(p); 1056 1057 /* 1058 * If we're in the margin, don't try to recalculate our current 1059 * row. XXX: if the column tries to be fancy with multiple 1060 * lines, we'll do nasty stuff. 1061 */ 1062 1063 if (PS_MARGINS & p->ps->flags) 1064 return; 1065 1066 /* Left-justify. */ 1067 1068 p->ps->pscol = p->ps->left; 1069 1070 /* If we haven't printed anything, return. */ 1071 1072 if (PS_NEWPAGE & p->ps->flags) 1073 return; 1074 1075 /* 1076 * Put us down a line. If we're at the page bottom, spit out a 1077 * showpage and restart our row. 1078 */ 1079 1080 if (p->ps->psrow >= p->ps->lineheight + 1081 p->ps->bottom) { 1082 p->ps->psrow -= p->ps->lineheight; 1083 return; 1084 } 1085 1086 ps_closepage(p); 1087 } 1088 1089 1090 static void 1091 ps_setfont(struct termp *p, enum termfont f) 1092 { 1093 1094 assert(f < TERMFONT__MAX); 1095 p->ps->lastf = f; 1096 1097 /* 1098 * If we're still at the top of the page, let the font-setting 1099 * be delayed until we actually have stuff to print. 1100 */ 1101 1102 if (PS_NEWPAGE & p->ps->flags) 1103 return; 1104 1105 if (TERMTYPE_PS == p->type) 1106 ps_printf(p, "/%s %zu selectfont\n", 1107 fonts[(int)f].name, 1108 p->ps->scale); 1109 else 1110 ps_printf(p, "/F%d %zu Tf\n", 1111 (int)f, 1112 p->ps->scale); 1113 } 1114 1115 1116 /* ARGSUSED */ 1117 static size_t 1118 ps_width(const struct termp *p, int c) 1119 { 1120 1121 if (c <= 32 || c - 32 >= MAXCHAR) 1122 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx); 1123 1124 c -= 32; 1125 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1126 } 1127 1128 1129 static double 1130 ps_hspan(const struct termp *p, const struct roffsu *su) 1131 { 1132 double r; 1133 1134 /* 1135 * All of these measurements are derived by converting from the 1136 * native measurement to AFM units. 1137 */ 1138 1139 switch (su->unit) { 1140 case (SCALE_CM): 1141 r = PNT2AFM(p, su->scale * 28.34); 1142 break; 1143 case (SCALE_IN): 1144 r = PNT2AFM(p, su->scale * 72); 1145 break; 1146 case (SCALE_PC): 1147 r = PNT2AFM(p, su->scale * 12); 1148 break; 1149 case (SCALE_PT): 1150 r = PNT2AFM(p, su->scale * 100); 1151 break; 1152 case (SCALE_EM): 1153 r = su->scale * 1154 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1155 break; 1156 case (SCALE_MM): 1157 r = PNT2AFM(p, su->scale * 2.834); 1158 break; 1159 case (SCALE_EN): 1160 r = su->scale * 1161 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1162 break; 1163 case (SCALE_VS): 1164 r = su->scale * p->ps->lineheight; 1165 break; 1166 default: 1167 r = su->scale; 1168 break; 1169 } 1170 1171 return(r); 1172 } 1173 1174 static void 1175 ps_growbuf(struct termp *p, size_t sz) 1176 { 1177 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1178 return; 1179 1180 if (sz < PS_BUFSLOP) 1181 sz = PS_BUFSLOP; 1182 1183 p->ps->psmargsz += sz; 1184 1185 p->ps->psmarg = mandoc_realloc 1186 (p->ps->psmarg, p->ps->psmargsz); 1187 } 1188 1189