1 /* $Id: term_ps.c,v 1.21 2014/03/21 22:17:01 schwarze 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 #include <sys/types.h> 18 19 #include <assert.h> 20 #include <stdarg.h> 21 #include <stdint.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <time.h> 26 #include <unistd.h> 27 28 #include "mandoc.h" 29 #include "mandoc_aux.h" 30 #include "out.h" 31 #include "main.h" 32 #include "term.h" 33 34 /* These work the buffer used by the header and footer. */ 35 #define PS_BUFSLOP 128 36 37 /* Convert PostScript point "x" to an AFM unit. */ 38 #define PNT2AFM(p, x) /* LINTED */ \ 39 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 40 41 /* Convert an AFM unit "x" to a PostScript points */ 42 #define AFM2PNT(p, x) /* LINTED */ \ 43 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 44 45 struct glyph { 46 unsigned short wx; /* WX in AFM */ 47 }; 48 49 struct font { 50 const char *name; /* FontName in AFM */ 51 #define MAXCHAR 95 /* total characters we can handle */ 52 struct glyph gly[MAXCHAR]; /* glyph metrics */ 53 }; 54 55 struct termp_ps { 56 int flags; 57 #define PS_INLINE (1 << 0) /* we're in a word */ 58 #define PS_MARGINS (1 << 1) /* we're in the margins */ 59 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 60 size_t pscol; /* visible column (AFM units) */ 61 size_t psrow; /* visible row (AFM units) */ 62 char *psmarg; /* margin buf */ 63 size_t psmargsz; /* margin buf size */ 64 size_t psmargcur; /* cur index in margin buf */ 65 char last; /* character buffer */ 66 enum termfont lastf; /* last set font */ 67 size_t scale; /* font scaling factor */ 68 size_t pages; /* number of pages shown */ 69 size_t lineheight; /* line height (AFM units) */ 70 size_t top; /* body top (AFM units) */ 71 size_t bottom; /* body bottom (AFM units) */ 72 size_t height; /* page height (AFM units */ 73 size_t width; /* page width (AFM units) */ 74 size_t left; /* body left (AFM units) */ 75 size_t header; /* header pos (AFM units) */ 76 size_t footer; /* footer pos (AFM units) */ 77 size_t pdfbytes; /* current output byte */ 78 size_t pdflastpg; /* byte of last page mark */ 79 size_t pdfbody; /* start of body object */ 80 size_t *pdfobjs; /* table of object offsets */ 81 size_t pdfobjsz; /* size of pdfobjs */ 82 }; 83 84 static double ps_hspan(const struct termp *, 85 const struct roffsu *); 86 static size_t ps_width(const struct termp *, int); 87 static void ps_advance(struct termp *, size_t); 88 static void ps_begin(struct termp *); 89 static void ps_closepage(struct termp *); 90 static void ps_end(struct termp *); 91 static void ps_endline(struct termp *); 92 static void ps_fclose(struct termp *); 93 static void ps_growbuf(struct termp *, size_t); 94 static void ps_letter(struct termp *, int); 95 static void ps_pclose(struct termp *); 96 static void ps_pletter(struct termp *, int); 97 static void ps_printf(struct termp *, const char *, ...); 98 static void ps_putchar(struct termp *, char); 99 static void ps_setfont(struct termp *, enum termfont); 100 static struct termp *pspdf_alloc(char *); 101 static void pdf_obj(struct termp *, size_t); 102 103 /* 104 * We define, for the time being, three fonts: bold, oblique/italic, and 105 * normal (roman). The following table hard-codes the font metrics for 106 * ASCII, i.e., 32--127. 107 */ 108 109 static const struct font fonts[TERMFONT__MAX] = { 110 { "Times-Roman", { 111 { 250 }, 112 { 333 }, 113 { 408 }, 114 { 500 }, 115 { 500 }, 116 { 833 }, 117 { 778 }, 118 { 333 }, 119 { 333 }, 120 { 333 }, 121 { 500 }, 122 { 564 }, 123 { 250 }, 124 { 333 }, 125 { 250 }, 126 { 278 }, 127 { 500 }, 128 { 500 }, 129 { 500 }, 130 { 500 }, 131 { 500 }, 132 { 500 }, 133 { 500 }, 134 { 500 }, 135 { 500 }, 136 { 500 }, 137 { 278 }, 138 { 278 }, 139 { 564 }, 140 { 564 }, 141 { 564 }, 142 { 444 }, 143 { 921 }, 144 { 722 }, 145 { 667 }, 146 { 667 }, 147 { 722 }, 148 { 611 }, 149 { 556 }, 150 { 722 }, 151 { 722 }, 152 { 333 }, 153 { 389 }, 154 { 722 }, 155 { 611 }, 156 { 889 }, 157 { 722 }, 158 { 722 }, 159 { 556 }, 160 { 722 }, 161 { 667 }, 162 { 556 }, 163 { 611 }, 164 { 722 }, 165 { 722 }, 166 { 944 }, 167 { 722 }, 168 { 722 }, 169 { 611 }, 170 { 333 }, 171 { 278 }, 172 { 333 }, 173 { 469 }, 174 { 500 }, 175 { 333 }, 176 { 444 }, 177 { 500 }, 178 { 444 }, 179 { 500}, 180 { 444}, 181 { 333}, 182 { 500}, 183 { 500}, 184 { 278}, 185 { 278}, 186 { 500}, 187 { 278}, 188 { 778}, 189 { 500}, 190 { 500}, 191 { 500}, 192 { 500}, 193 { 333}, 194 { 389}, 195 { 278}, 196 { 500}, 197 { 500}, 198 { 722}, 199 { 500}, 200 { 500}, 201 { 444}, 202 { 480}, 203 { 200}, 204 { 480}, 205 { 541}, 206 } }, 207 { "Times-Bold", { 208 { 250 }, 209 { 333 }, 210 { 555 }, 211 { 500 }, 212 { 500 }, 213 { 1000 }, 214 { 833 }, 215 { 333 }, 216 { 333 }, 217 { 333 }, 218 { 500 }, 219 { 570 }, 220 { 250 }, 221 { 333 }, 222 { 250 }, 223 { 278 }, 224 { 500 }, 225 { 500 }, 226 { 500 }, 227 { 500 }, 228 { 500 }, 229 { 500 }, 230 { 500 }, 231 { 500 }, 232 { 500 }, 233 { 500 }, 234 { 333 }, 235 { 333 }, 236 { 570 }, 237 { 570 }, 238 { 570 }, 239 { 500 }, 240 { 930 }, 241 { 722 }, 242 { 667 }, 243 { 722 }, 244 { 722 }, 245 { 667 }, 246 { 611 }, 247 { 778 }, 248 { 778 }, 249 { 389 }, 250 { 500 }, 251 { 778 }, 252 { 667 }, 253 { 944 }, 254 { 722 }, 255 { 778 }, 256 { 611 }, 257 { 778 }, 258 { 722 }, 259 { 556 }, 260 { 667 }, 261 { 722 }, 262 { 722 }, 263 { 1000 }, 264 { 722 }, 265 { 722 }, 266 { 667 }, 267 { 333 }, 268 { 278 }, 269 { 333 }, 270 { 581 }, 271 { 500 }, 272 { 333 }, 273 { 500 }, 274 { 556 }, 275 { 444 }, 276 { 556 }, 277 { 444 }, 278 { 333 }, 279 { 500 }, 280 { 556 }, 281 { 278 }, 282 { 333 }, 283 { 556 }, 284 { 278 }, 285 { 833 }, 286 { 556 }, 287 { 500 }, 288 { 556 }, 289 { 556 }, 290 { 444 }, 291 { 389 }, 292 { 333 }, 293 { 556 }, 294 { 500 }, 295 { 722 }, 296 { 500 }, 297 { 500 }, 298 { 444 }, 299 { 394 }, 300 { 220 }, 301 { 394 }, 302 { 520 }, 303 } }, 304 { "Times-Italic", { 305 { 250 }, 306 { 333 }, 307 { 420 }, 308 { 500 }, 309 { 500 }, 310 { 833 }, 311 { 778 }, 312 { 333 }, 313 { 333 }, 314 { 333 }, 315 { 500 }, 316 { 675 }, 317 { 250 }, 318 { 333 }, 319 { 250 }, 320 { 278 }, 321 { 500 }, 322 { 500 }, 323 { 500 }, 324 { 500 }, 325 { 500 }, 326 { 500 }, 327 { 500 }, 328 { 500 }, 329 { 500 }, 330 { 500 }, 331 { 333 }, 332 { 333 }, 333 { 675 }, 334 { 675 }, 335 { 675 }, 336 { 500 }, 337 { 920 }, 338 { 611 }, 339 { 611 }, 340 { 667 }, 341 { 722 }, 342 { 611 }, 343 { 611 }, 344 { 722 }, 345 { 722 }, 346 { 333 }, 347 { 444 }, 348 { 667 }, 349 { 556 }, 350 { 833 }, 351 { 667 }, 352 { 722 }, 353 { 611 }, 354 { 722 }, 355 { 611 }, 356 { 500 }, 357 { 556 }, 358 { 722 }, 359 { 611 }, 360 { 833 }, 361 { 611 }, 362 { 556 }, 363 { 556 }, 364 { 389 }, 365 { 278 }, 366 { 389 }, 367 { 422 }, 368 { 500 }, 369 { 333 }, 370 { 500 }, 371 { 500 }, 372 { 444 }, 373 { 500 }, 374 { 444 }, 375 { 278 }, 376 { 500 }, 377 { 500 }, 378 { 278 }, 379 { 278 }, 380 { 444 }, 381 { 278 }, 382 { 722 }, 383 { 500 }, 384 { 500 }, 385 { 500 }, 386 { 500 }, 387 { 389 }, 388 { 389 }, 389 { 278 }, 390 { 500 }, 391 { 444 }, 392 { 667 }, 393 { 444 }, 394 { 444 }, 395 { 389 }, 396 { 400 }, 397 { 275 }, 398 { 400 }, 399 { 541 }, 400 } }, 401 }; 402 403 void * 404 pdf_alloc(char *outopts) 405 { 406 struct termp *p; 407 408 if (NULL != (p = pspdf_alloc(outopts))) 409 p->type = TERMTYPE_PDF; 410 411 return(p); 412 } 413 414 void * 415 ps_alloc(char *outopts) 416 { 417 struct termp *p; 418 419 if (NULL != (p = pspdf_alloc(outopts))) 420 p->type = TERMTYPE_PS; 421 422 return(p); 423 } 424 425 static struct termp * 426 pspdf_alloc(char *outopts) 427 { 428 struct termp *p; 429 unsigned int pagex, pagey; 430 size_t marginx, marginy, lineheight; 431 const char *toks[2]; 432 const char *pp; 433 char *v; 434 435 p = mandoc_calloc(1, sizeof(struct termp)); 436 p->enc = TERMENC_ASCII; 437 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 438 439 p->advance = ps_advance; 440 p->begin = ps_begin; 441 p->end = ps_end; 442 p->endline = ps_endline; 443 p->hspan = ps_hspan; 444 p->letter = ps_letter; 445 p->width = ps_width; 446 447 toks[0] = "paper"; 448 toks[1] = NULL; 449 450 pp = NULL; 451 452 while (outopts && *outopts) 453 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 454 case (0): 455 pp = v; 456 break; 457 default: 458 break; 459 } 460 461 /* Default to US letter (millimetres). */ 462 463 pagex = 216; 464 pagey = 279; 465 466 /* 467 * The ISO-269 paper sizes can be calculated automatically, but 468 * it would require bringing in -lm for pow() and I'd rather not 469 * do that. So just do it the easy way for now. Since this 470 * only happens once, I'm not terribly concerned. 471 */ 472 473 if (pp && strcasecmp(pp, "letter")) { 474 if (0 == strcasecmp(pp, "a3")) { 475 pagex = 297; 476 pagey = 420; 477 } else if (0 == strcasecmp(pp, "a4")) { 478 pagex = 210; 479 pagey = 297; 480 } else if (0 == strcasecmp(pp, "a5")) { 481 pagex = 148; 482 pagey = 210; 483 } else if (0 == strcasecmp(pp, "legal")) { 484 pagex = 216; 485 pagey = 356; 486 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 487 fprintf(stderr, "%s: Unknown paper\n", pp); 488 } 489 490 /* 491 * This MUST be defined before any PNT2AFM or AFM2PNT 492 * calculations occur. 493 */ 494 495 p->ps->scale = 11; 496 497 /* Remember millimetres -> AFM units. */ 498 499 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 500 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 501 502 /* Margins are 1/9 the page x and y. */ 503 504 marginx = /* LINTED */ 505 (size_t)((double)pagex / 9.0); 506 marginy = /* LINTED */ 507 (size_t)((double)pagey / 9.0); 508 509 /* Line-height is 1.4em. */ 510 511 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 512 513 p->ps->width = (size_t)pagex; 514 p->ps->height = (size_t)pagey; 515 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 516 p->ps->top = pagey - marginy; 517 p->ps->footer = (marginy / 2) - (lineheight / 2); 518 p->ps->bottom = marginy; 519 p->ps->left = marginx; 520 p->ps->lineheight = lineheight; 521 522 p->defrmargin = pagex - (marginx * 2); 523 return(p); 524 } 525 526 527 void 528 pspdf_free(void *arg) 529 { 530 struct termp *p; 531 532 p = (struct termp *)arg; 533 534 if (p->ps->psmarg) 535 free(p->ps->psmarg); 536 if (p->ps->pdfobjs) 537 free(p->ps->pdfobjs); 538 539 free(p->ps); 540 term_free(p); 541 } 542 543 544 static void 545 ps_printf(struct termp *p, const char *fmt, ...) 546 { 547 va_list ap; 548 int pos, len; 549 550 va_start(ap, fmt); 551 552 /* 553 * If we're running in regular mode, then pipe directly into 554 * vprintf(). If we're processing margins, then push the data 555 * into our growable margin buffer. 556 */ 557 558 if ( ! (PS_MARGINS & p->ps->flags)) { 559 len = vprintf(fmt, ap); 560 va_end(ap); 561 p->ps->pdfbytes += /* LINTED */ 562 len < 0 ? 0 : (size_t)len; 563 return; 564 } 565 566 /* 567 * XXX: I assume that the in-margin print won't exceed 568 * PS_BUFSLOP (128 bytes), which is reasonable but still an 569 * assumption that will cause pukeage if it's not the case. 570 */ 571 572 ps_growbuf(p, PS_BUFSLOP); 573 574 pos = (int)p->ps->psmargcur; 575 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 576 577 va_end(ap); 578 579 p->ps->psmargcur = strlen(p->ps->psmarg); 580 } 581 582 583 static void 584 ps_putchar(struct termp *p, char c) 585 { 586 int pos; 587 588 /* See ps_printf(). */ 589 590 if ( ! (PS_MARGINS & p->ps->flags)) { 591 /* LINTED */ 592 putchar(c); 593 p->ps->pdfbytes++; 594 return; 595 } 596 597 ps_growbuf(p, 2); 598 599 pos = (int)p->ps->psmargcur++; 600 p->ps->psmarg[pos++] = c; 601 p->ps->psmarg[pos] = '\0'; 602 } 603 604 605 static void 606 pdf_obj(struct termp *p, size_t obj) 607 { 608 609 assert(obj > 0); 610 611 if ((obj - 1) >= p->ps->pdfobjsz) { 612 p->ps->pdfobjsz = obj + 128; 613 p->ps->pdfobjs = realloc 614 (p->ps->pdfobjs, 615 p->ps->pdfobjsz * sizeof(size_t)); 616 if (NULL == p->ps->pdfobjs) { 617 perror(NULL); 618 exit((int)MANDOCLEVEL_SYSERR); 619 } 620 } 621 622 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 623 ps_printf(p, "%zu 0 obj\n", obj); 624 } 625 626 627 static void 628 ps_closepage(struct termp *p) 629 { 630 int i; 631 size_t len, base; 632 633 /* 634 * Close out a page that we've already flushed to output. In 635 * PostScript, we simply note that the page must be showed. In 636 * PDF, we must now create the Length, Resource, and Page node 637 * for the page contents. 638 */ 639 640 assert(p->ps->psmarg && p->ps->psmarg[0]); 641 ps_printf(p, "%s", p->ps->psmarg); 642 643 if (TERMTYPE_PS != p->type) { 644 ps_printf(p, "ET\n"); 645 646 len = p->ps->pdfbytes - p->ps->pdflastpg; 647 base = p->ps->pages * 4 + p->ps->pdfbody; 648 649 ps_printf(p, "endstream\nendobj\n"); 650 651 /* Length of content. */ 652 pdf_obj(p, base + 1); 653 ps_printf(p, "%zu\nendobj\n", len); 654 655 /* Resource for content. */ 656 pdf_obj(p, base + 2); 657 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 658 ps_printf(p, "/Font <<\n"); 659 for (i = 0; i < (int)TERMFONT__MAX; i++) 660 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 661 ps_printf(p, ">>\n>>\n"); 662 663 /* Page node. */ 664 pdf_obj(p, base + 3); 665 ps_printf(p, "<<\n"); 666 ps_printf(p, "/Type /Page\n"); 667 ps_printf(p, "/Parent 2 0 R\n"); 668 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 669 ps_printf(p, "/Contents %zu 0 R\n", base); 670 ps_printf(p, ">>\nendobj\n"); 671 } else 672 ps_printf(p, "showpage\n"); 673 674 p->ps->pages++; 675 p->ps->psrow = p->ps->top; 676 assert( ! (PS_NEWPAGE & p->ps->flags)); 677 p->ps->flags |= PS_NEWPAGE; 678 } 679 680 681 /* ARGSUSED */ 682 static void 683 ps_end(struct termp *p) 684 { 685 size_t i, xref, base; 686 687 /* 688 * At the end of the file, do one last showpage. This is the 689 * same behaviour as groff(1) and works for multiple pages as 690 * well as just one. 691 */ 692 693 if ( ! (PS_NEWPAGE & p->ps->flags)) { 694 assert(0 == p->ps->flags); 695 assert('\0' == p->ps->last); 696 ps_closepage(p); 697 } 698 699 if (TERMTYPE_PS == p->type) { 700 ps_printf(p, "%%%%Trailer\n"); 701 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 702 ps_printf(p, "%%%%EOF\n"); 703 return; 704 } 705 706 pdf_obj(p, 2); 707 ps_printf(p, "<<\n/Type /Pages\n"); 708 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 709 (size_t)AFM2PNT(p, p->ps->width), 710 (size_t)AFM2PNT(p, p->ps->height)); 711 712 ps_printf(p, "/Count %zu\n", p->ps->pages); 713 ps_printf(p, "/Kids ["); 714 715 for (i = 0; i < p->ps->pages; i++) 716 ps_printf(p, " %zu 0 R", i * 4 + 717 p->ps->pdfbody + 3); 718 719 base = (p->ps->pages - 1) * 4 + 720 p->ps->pdfbody + 4; 721 722 ps_printf(p, "]\n>>\nendobj\n"); 723 pdf_obj(p, base); 724 ps_printf(p, "<<\n"); 725 ps_printf(p, "/Type /Catalog\n"); 726 ps_printf(p, "/Pages 2 0 R\n"); 727 ps_printf(p, ">>\n"); 728 xref = p->ps->pdfbytes; 729 ps_printf(p, "xref\n"); 730 ps_printf(p, "0 %zu\n", base + 1); 731 ps_printf(p, "0000000000 65535 f \n"); 732 733 for (i = 0; i < base; i++) 734 ps_printf(p, "%.10zu 00000 n \n", 735 p->ps->pdfobjs[(int)i]); 736 737 ps_printf(p, "trailer\n"); 738 ps_printf(p, "<<\n"); 739 ps_printf(p, "/Size %zu\n", base + 1); 740 ps_printf(p, "/Root %zu 0 R\n", base); 741 ps_printf(p, "/Info 1 0 R\n"); 742 ps_printf(p, ">>\n"); 743 ps_printf(p, "startxref\n"); 744 ps_printf(p, "%zu\n", xref); 745 ps_printf(p, "%%%%EOF\n"); 746 } 747 748 749 static void 750 ps_begin(struct termp *p) 751 { 752 time_t t; 753 int i; 754 755 /* 756 * Print margins into margin buffer. Nothing gets output to the 757 * screen yet, so we don't need to initialise the primary state. 758 */ 759 760 if (p->ps->psmarg) { 761 assert(p->ps->psmargsz); 762 p->ps->psmarg[0] = '\0'; 763 } 764 765 /*p->ps->pdfbytes = 0;*/ 766 p->ps->psmargcur = 0; 767 p->ps->flags = PS_MARGINS; 768 p->ps->pscol = p->ps->left; 769 p->ps->psrow = p->ps->header; 770 771 ps_setfont(p, TERMFONT_NONE); 772 773 (*p->headf)(p, p->argf); 774 (*p->endline)(p); 775 776 p->ps->pscol = p->ps->left; 777 p->ps->psrow = p->ps->footer; 778 779 (*p->footf)(p, p->argf); 780 (*p->endline)(p); 781 782 p->ps->flags &= ~PS_MARGINS; 783 784 assert(0 == p->ps->flags); 785 assert(p->ps->psmarg); 786 assert('\0' != p->ps->psmarg[0]); 787 788 /* 789 * Print header and initialise page state. Following this, 790 * stuff gets printed to the screen, so make sure we're sane. 791 */ 792 793 t = time(NULL); 794 795 if (TERMTYPE_PS == p->type) { 796 ps_printf(p, "%%!PS-Adobe-3.0\n"); 797 ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); 798 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 799 ps_printf(p, "%%%%Orientation: Portrait\n"); 800 ps_printf(p, "%%%%Pages: (atend)\n"); 801 ps_printf(p, "%%%%PageOrder: Ascend\n"); 802 ps_printf(p, "%%%%DocumentMedia: " 803 "Default %zu %zu 0 () ()\n", 804 (size_t)AFM2PNT(p, p->ps->width), 805 (size_t)AFM2PNT(p, p->ps->height)); 806 ps_printf(p, "%%%%DocumentNeededResources: font"); 807 808 for (i = 0; i < (int)TERMFONT__MAX; i++) 809 ps_printf(p, " %s", fonts[i].name); 810 811 ps_printf(p, "\n%%%%EndComments\n"); 812 } else { 813 ps_printf(p, "%%PDF-1.1\n"); 814 pdf_obj(p, 1); 815 ps_printf(p, "<<\n"); 816 ps_printf(p, ">>\n"); 817 ps_printf(p, "endobj\n"); 818 819 for (i = 0; i < (int)TERMFONT__MAX; i++) { 820 pdf_obj(p, (size_t)i + 3); 821 ps_printf(p, "<<\n"); 822 ps_printf(p, "/Type /Font\n"); 823 ps_printf(p, "/Subtype /Type1\n"); 824 ps_printf(p, "/Name /F%d\n", i); 825 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 826 ps_printf(p, ">>\n"); 827 } 828 } 829 830 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 831 p->ps->pscol = p->ps->left; 832 p->ps->psrow = p->ps->top; 833 p->ps->flags |= PS_NEWPAGE; 834 ps_setfont(p, TERMFONT_NONE); 835 } 836 837 838 static void 839 ps_pletter(struct termp *p, int c) 840 { 841 int f; 842 843 /* 844 * If we haven't opened a page context, then output that we're 845 * in a new page and make sure the font is correctly set. 846 */ 847 848 if (PS_NEWPAGE & p->ps->flags) { 849 if (TERMTYPE_PS == p->type) { 850 ps_printf(p, "%%%%Page: %zu %zu\n", 851 p->ps->pages + 1, 852 p->ps->pages + 1); 853 ps_printf(p, "/%s %zu selectfont\n", 854 fonts[(int)p->ps->lastf].name, 855 p->ps->scale); 856 } else { 857 pdf_obj(p, p->ps->pdfbody + 858 p->ps->pages * 4); 859 ps_printf(p, "<<\n"); 860 ps_printf(p, "/Length %zu 0 R\n", 861 p->ps->pdfbody + 1 + 862 p->ps->pages * 4); 863 ps_printf(p, ">>\nstream\n"); 864 } 865 p->ps->pdflastpg = p->ps->pdfbytes; 866 p->ps->flags &= ~PS_NEWPAGE; 867 } 868 869 /* 870 * If we're not in a PostScript "word" context, then open one 871 * now at the current cursor. 872 */ 873 874 if ( ! (PS_INLINE & p->ps->flags)) { 875 if (TERMTYPE_PS != p->type) { 876 ps_printf(p, "BT\n/F%d %zu Tf\n", 877 (int)p->ps->lastf, 878 p->ps->scale); 879 ps_printf(p, "%.3f %.3f Td\n(", 880 AFM2PNT(p, p->ps->pscol), 881 AFM2PNT(p, p->ps->psrow)); 882 } else 883 ps_printf(p, "%.3f %.3f moveto\n(", 884 AFM2PNT(p, p->ps->pscol), 885 AFM2PNT(p, p->ps->psrow)); 886 p->ps->flags |= PS_INLINE; 887 } 888 889 assert( ! (PS_NEWPAGE & p->ps->flags)); 890 891 /* 892 * We need to escape these characters as per the PostScript 893 * specification. We would also escape non-graphable characters 894 * (like tabs), but none of them would get to this point and 895 * it's superfluous to abort() on them. 896 */ 897 898 switch (c) { 899 case ('('): 900 /* FALLTHROUGH */ 901 case (')'): 902 /* FALLTHROUGH */ 903 case ('\\'): 904 ps_putchar(p, '\\'); 905 break; 906 default: 907 break; 908 } 909 910 /* Write the character and adjust where we are on the page. */ 911 912 f = (int)p->ps->lastf; 913 914 if (c <= 32 || (c - 32 >= MAXCHAR)) { 915 ps_putchar(p, ' '); 916 p->ps->pscol += (size_t)fonts[f].gly[0].wx; 917 return; 918 } 919 920 ps_putchar(p, (char)c); 921 c -= 32; 922 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 923 } 924 925 926 static void 927 ps_pclose(struct termp *p) 928 { 929 930 /* 931 * Spit out that we're exiting a word context (this is a 932 * "partial close" because we don't check the last-char buffer 933 * or anything). 934 */ 935 936 if ( ! (PS_INLINE & p->ps->flags)) 937 return; 938 939 if (TERMTYPE_PS != p->type) { 940 ps_printf(p, ") Tj\nET\n"); 941 } else 942 ps_printf(p, ") show\n"); 943 944 p->ps->flags &= ~PS_INLINE; 945 } 946 947 948 static void 949 ps_fclose(struct termp *p) 950 { 951 952 /* 953 * Strong closure: if we have a last-char, spit it out after 954 * checking that we're in the right font mode. This will of 955 * course open a new scope, if applicable. 956 * 957 * Following this, close out any scope that's open. 958 */ 959 960 if ('\0' != p->ps->last) { 961 if (p->ps->lastf != TERMFONT_NONE) { 962 ps_pclose(p); 963 ps_setfont(p, TERMFONT_NONE); 964 } 965 ps_pletter(p, p->ps->last); 966 p->ps->last = '\0'; 967 } 968 969 if ( ! (PS_INLINE & p->ps->flags)) 970 return; 971 972 ps_pclose(p); 973 } 974 975 976 static void 977 ps_letter(struct termp *p, int arg) 978 { 979 char cc, c; 980 981 /* LINTED */ 982 c = arg >= 128 || arg <= 0 ? '?' : arg; 983 984 /* 985 * State machine dictates whether to buffer the last character 986 * or not. Basically, encoded words are detected by checking if 987 * we're an "8" and switching on the buffer. Then we put "8" in 988 * our buffer, and on the next charater, flush both character 989 * and buffer. Thus, "regular" words are detected by having a 990 * regular character and a regular buffer character. 991 */ 992 993 if ('\0' == p->ps->last) { 994 assert(8 != c); 995 p->ps->last = c; 996 return; 997 } else if (8 == p->ps->last) { 998 assert(8 != c); 999 p->ps->last = '\0'; 1000 } else if (8 == c) { 1001 assert(8 != p->ps->last); 1002 if ('_' == p->ps->last) { 1003 if (p->ps->lastf != TERMFONT_UNDER) { 1004 ps_pclose(p); 1005 ps_setfont(p, TERMFONT_UNDER); 1006 } 1007 } else if (p->ps->lastf != TERMFONT_BOLD) { 1008 ps_pclose(p); 1009 ps_setfont(p, TERMFONT_BOLD); 1010 } 1011 p->ps->last = c; 1012 return; 1013 } else { 1014 if (p->ps->lastf != TERMFONT_NONE) { 1015 ps_pclose(p); 1016 ps_setfont(p, TERMFONT_NONE); 1017 } 1018 cc = p->ps->last; 1019 p->ps->last = c; 1020 c = cc; 1021 } 1022 1023 ps_pletter(p, c); 1024 } 1025 1026 1027 static void 1028 ps_advance(struct termp *p, size_t len) 1029 { 1030 1031 /* 1032 * Advance some spaces. This can probably be made smarter, 1033 * i.e., to have multiple space-separated words in the same 1034 * scope, but this is easier: just close out the current scope 1035 * and readjust our column settings. 1036 */ 1037 1038 ps_fclose(p); 1039 p->ps->pscol += len; 1040 } 1041 1042 1043 static void 1044 ps_endline(struct termp *p) 1045 { 1046 1047 /* Close out any scopes we have open: we're at eoln. */ 1048 1049 ps_fclose(p); 1050 1051 /* 1052 * If we're in the margin, don't try to recalculate our current 1053 * row. XXX: if the column tries to be fancy with multiple 1054 * lines, we'll do nasty stuff. 1055 */ 1056 1057 if (PS_MARGINS & p->ps->flags) 1058 return; 1059 1060 /* Left-justify. */ 1061 1062 p->ps->pscol = p->ps->left; 1063 1064 /* If we haven't printed anything, return. */ 1065 1066 if (PS_NEWPAGE & p->ps->flags) 1067 return; 1068 1069 /* 1070 * Put us down a line. If we're at the page bottom, spit out a 1071 * showpage and restart our row. 1072 */ 1073 1074 if (p->ps->psrow >= p->ps->lineheight + 1075 p->ps->bottom) { 1076 p->ps->psrow -= p->ps->lineheight; 1077 return; 1078 } 1079 1080 ps_closepage(p); 1081 } 1082 1083 1084 static void 1085 ps_setfont(struct termp *p, enum termfont f) 1086 { 1087 1088 assert(f < TERMFONT__MAX); 1089 p->ps->lastf = f; 1090 1091 /* 1092 * If we're still at the top of the page, let the font-setting 1093 * be delayed until we actually have stuff to print. 1094 */ 1095 1096 if (PS_NEWPAGE & p->ps->flags) 1097 return; 1098 1099 if (TERMTYPE_PS == p->type) 1100 ps_printf(p, "/%s %zu selectfont\n", 1101 fonts[(int)f].name, 1102 p->ps->scale); 1103 else 1104 ps_printf(p, "/F%d %zu Tf\n", 1105 (int)f, 1106 p->ps->scale); 1107 } 1108 1109 1110 /* ARGSUSED */ 1111 static size_t 1112 ps_width(const struct termp *p, int c) 1113 { 1114 1115 if (c <= 32 || c - 32 >= MAXCHAR) 1116 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx); 1117 1118 c -= 32; 1119 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1120 } 1121 1122 1123 static double 1124 ps_hspan(const struct termp *p, const struct roffsu *su) 1125 { 1126 double r; 1127 1128 /* 1129 * All of these measurements are derived by converting from the 1130 * native measurement to AFM units. 1131 */ 1132 1133 switch (su->unit) { 1134 case (SCALE_CM): 1135 r = PNT2AFM(p, su->scale * 28.34); 1136 break; 1137 case (SCALE_IN): 1138 r = PNT2AFM(p, su->scale * 72); 1139 break; 1140 case (SCALE_PC): 1141 r = PNT2AFM(p, su->scale * 12); 1142 break; 1143 case (SCALE_PT): 1144 r = PNT2AFM(p, su->scale * 100); 1145 break; 1146 case (SCALE_EM): 1147 r = su->scale * 1148 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1149 break; 1150 case (SCALE_MM): 1151 r = PNT2AFM(p, su->scale * 2.834); 1152 break; 1153 case (SCALE_EN): 1154 r = su->scale * 1155 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1156 break; 1157 case (SCALE_VS): 1158 r = su->scale * p->ps->lineheight; 1159 break; 1160 default: 1161 r = su->scale; 1162 break; 1163 } 1164 1165 return(r); 1166 } 1167 1168 static void 1169 ps_growbuf(struct termp *p, size_t sz) 1170 { 1171 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1172 return; 1173 1174 if (sz < PS_BUFSLOP) 1175 sz = PS_BUFSLOP; 1176 1177 p->ps->psmargsz += sz; 1178 1179 p->ps->psmarg = mandoc_realloc 1180 (p->ps->psmarg, p->ps->psmargsz); 1181 } 1182 1183