1 /* $OpenBSD: term_ps.c,v 1.56 2020/09/06 14:44:19 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2014,2015,2016,2017,2020 Ingo Schwarze <schwarze@openbsd.org> 5 * Copyright (c) 2017 Marc Espie <espie@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 #include <sys/types.h> 20 21 #include <assert.h> 22 #include <err.h> 23 #include <stdarg.h> 24 #include <stdint.h> 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> 28 #include <unistd.h> 29 30 #include "mandoc_aux.h" 31 #include "out.h" 32 #include "term.h" 33 #include "manconf.h" 34 #include "main.h" 35 36 /* These work the buffer used by the header and footer. */ 37 #define PS_BUFSLOP 128 38 39 /* Convert PostScript point "x" to an AFM unit. */ 40 #define PNT2AFM(p, x) \ 41 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 42 43 /* Convert an AFM unit "x" to a PostScript points */ 44 #define AFM2PNT(p, x) \ 45 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 46 47 struct glyph { 48 unsigned short wx; /* WX in AFM */ 49 }; 50 51 struct font { 52 const char *name; /* FontName in AFM */ 53 #define MAXCHAR 95 /* total characters we can handle */ 54 struct glyph gly[MAXCHAR]; /* glyph metrics */ 55 }; 56 57 struct termp_ps { 58 int flags; 59 #define PS_INLINE (1 << 0) /* we're in a word */ 60 #define PS_MARGINS (1 << 1) /* we're in the margins */ 61 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 62 #define PS_BACKSP (1 << 3) /* last character was backspace */ 63 size_t pscol; /* visible column (AFM units) */ 64 size_t pscolnext; /* used for overstrike */ 65 size_t psrow; /* visible row (AFM units) */ 66 size_t lastrow; /* psrow of the previous word */ 67 char *psmarg; /* margin buf */ 68 size_t psmargsz; /* margin buf size */ 69 size_t psmargcur; /* cur index in margin buf */ 70 char last; /* last non-backspace seen */ 71 enum termfont lastf; /* last set font */ 72 enum termfont nextf; /* building next font here */ 73 size_t scale; /* font scaling factor */ 74 size_t pages; /* number of pages shown */ 75 size_t lineheight; /* line height (AFM units) */ 76 size_t top; /* body top (AFM units) */ 77 size_t bottom; /* body bottom (AFM units) */ 78 const char *medianame; /* for DocumentMedia and PageSize */ 79 size_t height; /* page height (AFM units */ 80 size_t width; /* page width (AFM units) */ 81 size_t lastwidth; /* page width before last ll */ 82 size_t left; /* body left (AFM units) */ 83 size_t header; /* header pos (AFM units) */ 84 size_t footer; /* footer pos (AFM units) */ 85 size_t pdfbytes; /* current output byte */ 86 size_t pdflastpg; /* byte of last page mark */ 87 size_t pdfbody; /* start of body object */ 88 size_t *pdfobjs; /* table of object offsets */ 89 size_t pdfobjsz; /* size of pdfobjs */ 90 }; 91 92 static int ps_hspan(const struct termp *, 93 const struct roffsu *); 94 static size_t ps_width(const struct termp *, int); 95 static void ps_advance(struct termp *, size_t); 96 static void ps_begin(struct termp *); 97 static void ps_closepage(struct termp *); 98 static void ps_end(struct termp *); 99 static void ps_endline(struct termp *); 100 static void ps_growbuf(struct termp *, size_t); 101 static void ps_letter(struct termp *, int); 102 static void ps_pclose(struct termp *); 103 static void ps_plast(struct termp *); 104 static void ps_pletter(struct termp *, int); 105 static void ps_printf(struct termp *, const char *, ...) 106 __attribute__((__format__ (__printf__, 2, 3))); 107 static void ps_putchar(struct termp *, char); 108 static void ps_setfont(struct termp *, enum termfont); 109 static void ps_setwidth(struct termp *, int, int); 110 static struct termp *pspdf_alloc(const struct manoutput *, enum termtype); 111 static void pdf_obj(struct termp *, size_t); 112 113 /* 114 * We define, for the time being, three fonts: bold, oblique/italic, and 115 * normal (roman). The following table hard-codes the font metrics for 116 * ASCII, i.e., 32--127. 117 */ 118 119 static const struct font fonts[TERMFONT__MAX] = { 120 { "Times-Roman", { 121 { 250 }, 122 { 333 }, 123 { 408 }, 124 { 500 }, 125 { 500 }, 126 { 833 }, 127 { 778 }, 128 { 333 }, 129 { 333 }, 130 { 333 }, 131 { 500 }, 132 { 564 }, 133 { 250 }, 134 { 333 }, 135 { 250 }, 136 { 278 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 500 }, 144 { 500 }, 145 { 500 }, 146 { 500 }, 147 { 278 }, 148 { 278 }, 149 { 564 }, 150 { 564 }, 151 { 564 }, 152 { 444 }, 153 { 921 }, 154 { 722 }, 155 { 667 }, 156 { 667 }, 157 { 722 }, 158 { 611 }, 159 { 556 }, 160 { 722 }, 161 { 722 }, 162 { 333 }, 163 { 389 }, 164 { 722 }, 165 { 611 }, 166 { 889 }, 167 { 722 }, 168 { 722 }, 169 { 556 }, 170 { 722 }, 171 { 667 }, 172 { 556 }, 173 { 611 }, 174 { 722 }, 175 { 722 }, 176 { 944 }, 177 { 722 }, 178 { 722 }, 179 { 611 }, 180 { 333 }, 181 { 278 }, 182 { 333 }, 183 { 469 }, 184 { 500 }, 185 { 333 }, 186 { 444 }, 187 { 500 }, 188 { 444 }, 189 { 500}, 190 { 444}, 191 { 333}, 192 { 500}, 193 { 500}, 194 { 278}, 195 { 278}, 196 { 500}, 197 { 278}, 198 { 778}, 199 { 500}, 200 { 500}, 201 { 500}, 202 { 500}, 203 { 333}, 204 { 389}, 205 { 278}, 206 { 500}, 207 { 500}, 208 { 722}, 209 { 500}, 210 { 500}, 211 { 444}, 212 { 480}, 213 { 200}, 214 { 480}, 215 { 541}, 216 } }, 217 { "Times-Bold", { 218 { 250 }, 219 { 333 }, 220 { 555 }, 221 { 500 }, 222 { 500 }, 223 { 1000 }, 224 { 833 }, 225 { 333 }, 226 { 333 }, 227 { 333 }, 228 { 500 }, 229 { 570 }, 230 { 250 }, 231 { 333 }, 232 { 250 }, 233 { 278 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 500 }, 241 { 500 }, 242 { 500 }, 243 { 500 }, 244 { 333 }, 245 { 333 }, 246 { 570 }, 247 { 570 }, 248 { 570 }, 249 { 500 }, 250 { 930 }, 251 { 722 }, 252 { 667 }, 253 { 722 }, 254 { 722 }, 255 { 667 }, 256 { 611 }, 257 { 778 }, 258 { 778 }, 259 { 389 }, 260 { 500 }, 261 { 778 }, 262 { 667 }, 263 { 944 }, 264 { 722 }, 265 { 778 }, 266 { 611 }, 267 { 778 }, 268 { 722 }, 269 { 556 }, 270 { 667 }, 271 { 722 }, 272 { 722 }, 273 { 1000 }, 274 { 722 }, 275 { 722 }, 276 { 667 }, 277 { 333 }, 278 { 278 }, 279 { 333 }, 280 { 581 }, 281 { 500 }, 282 { 333 }, 283 { 500 }, 284 { 556 }, 285 { 444 }, 286 { 556 }, 287 { 444 }, 288 { 333 }, 289 { 500 }, 290 { 556 }, 291 { 278 }, 292 { 333 }, 293 { 556 }, 294 { 278 }, 295 { 833 }, 296 { 556 }, 297 { 500 }, 298 { 556 }, 299 { 556 }, 300 { 444 }, 301 { 389 }, 302 { 333 }, 303 { 556 }, 304 { 500 }, 305 { 722 }, 306 { 500 }, 307 { 500 }, 308 { 444 }, 309 { 394 }, 310 { 220 }, 311 { 394 }, 312 { 520 }, 313 } }, 314 { "Times-Italic", { 315 { 250 }, 316 { 333 }, 317 { 420 }, 318 { 500 }, 319 { 500 }, 320 { 833 }, 321 { 778 }, 322 { 333 }, 323 { 333 }, 324 { 333 }, 325 { 500 }, 326 { 675 }, 327 { 250 }, 328 { 333 }, 329 { 250 }, 330 { 278 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 500 }, 338 { 500 }, 339 { 500 }, 340 { 500 }, 341 { 333 }, 342 { 333 }, 343 { 675 }, 344 { 675 }, 345 { 675 }, 346 { 500 }, 347 { 920 }, 348 { 611 }, 349 { 611 }, 350 { 667 }, 351 { 722 }, 352 { 611 }, 353 { 611 }, 354 { 722 }, 355 { 722 }, 356 { 333 }, 357 { 444 }, 358 { 667 }, 359 { 556 }, 360 { 833 }, 361 { 667 }, 362 { 722 }, 363 { 611 }, 364 { 722 }, 365 { 611 }, 366 { 500 }, 367 { 556 }, 368 { 722 }, 369 { 611 }, 370 { 833 }, 371 { 611 }, 372 { 556 }, 373 { 556 }, 374 { 389 }, 375 { 278 }, 376 { 389 }, 377 { 422 }, 378 { 500 }, 379 { 333 }, 380 { 500 }, 381 { 500 }, 382 { 444 }, 383 { 500 }, 384 { 444 }, 385 { 278 }, 386 { 500 }, 387 { 500 }, 388 { 278 }, 389 { 278 }, 390 { 444 }, 391 { 278 }, 392 { 722 }, 393 { 500 }, 394 { 500 }, 395 { 500 }, 396 { 500 }, 397 { 389 }, 398 { 389 }, 399 { 278 }, 400 { 500 }, 401 { 444 }, 402 { 667 }, 403 { 444 }, 404 { 444 }, 405 { 389 }, 406 { 400 }, 407 { 275 }, 408 { 400 }, 409 { 541 }, 410 } }, 411 { "Times-BoldItalic", { 412 { 250 }, 413 { 389 }, 414 { 555 }, 415 { 500 }, 416 { 500 }, 417 { 833 }, 418 { 778 }, 419 { 333 }, 420 { 333 }, 421 { 333 }, 422 { 500 }, 423 { 570 }, 424 { 250 }, 425 { 333 }, 426 { 250 }, 427 { 278 }, 428 { 500 }, 429 { 500 }, 430 { 500 }, 431 { 500 }, 432 { 500 }, 433 { 500 }, 434 { 500 }, 435 { 500 }, 436 { 500 }, 437 { 500 }, 438 { 333 }, 439 { 333 }, 440 { 570 }, 441 { 570 }, 442 { 570 }, 443 { 500 }, 444 { 832 }, 445 { 667 }, 446 { 667 }, 447 { 667 }, 448 { 722 }, 449 { 667 }, 450 { 667 }, 451 { 722 }, 452 { 778 }, 453 { 389 }, 454 { 500 }, 455 { 667 }, 456 { 611 }, 457 { 889 }, 458 { 722 }, 459 { 722 }, 460 { 611 }, 461 { 722 }, 462 { 667 }, 463 { 556 }, 464 { 611 }, 465 { 722 }, 466 { 667 }, 467 { 889 }, 468 { 667 }, 469 { 611 }, 470 { 611 }, 471 { 333 }, 472 { 278 }, 473 { 333 }, 474 { 570 }, 475 { 500 }, 476 { 333 }, 477 { 500 }, 478 { 500 }, 479 { 444 }, 480 { 500 }, 481 { 444 }, 482 { 333 }, 483 { 500 }, 484 { 556 }, 485 { 278 }, 486 { 278 }, 487 { 500 }, 488 { 278 }, 489 { 778 }, 490 { 556 }, 491 { 500 }, 492 { 500 }, 493 { 500 }, 494 { 389 }, 495 { 389 }, 496 { 278 }, 497 { 556 }, 498 { 444 }, 499 { 667 }, 500 { 500 }, 501 { 444 }, 502 { 389 }, 503 { 348 }, 504 { 220 }, 505 { 348 }, 506 { 570 }, 507 } }, 508 }; 509 510 void * 511 pdf_alloc(const struct manoutput *outopts) 512 { 513 return pspdf_alloc(outopts, TERMTYPE_PDF); 514 } 515 516 void * 517 ps_alloc(const struct manoutput *outopts) 518 { 519 return pspdf_alloc(outopts, TERMTYPE_PS); 520 } 521 522 static struct termp * 523 pspdf_alloc(const struct manoutput *outopts, enum termtype type) 524 { 525 struct termp *p; 526 unsigned int pagex, pagey; 527 size_t marginx, marginy, lineheight; 528 const char *pp; 529 530 p = mandoc_calloc(1, sizeof(*p)); 531 p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol)); 532 p->maxtcol = 1; 533 p->type = type; 534 535 p->enc = TERMENC_ASCII; 536 p->fontq = mandoc_reallocarray(NULL, 537 (p->fontsz = 8), sizeof(*p->fontq)); 538 p->fontq[0] = p->fontl = TERMFONT_NONE; 539 p->ps = mandoc_calloc(1, sizeof(*p->ps)); 540 541 p->advance = ps_advance; 542 p->begin = ps_begin; 543 p->end = ps_end; 544 p->endline = ps_endline; 545 p->hspan = ps_hspan; 546 p->letter = ps_letter; 547 p->setwidth = ps_setwidth; 548 p->width = ps_width; 549 550 /* Default to US letter (millimetres). */ 551 552 p->ps->medianame = "Letter"; 553 pagex = 216; 554 pagey = 279; 555 556 /* 557 * The ISO-269 paper sizes can be calculated automatically, but 558 * it would require bringing in -lm for pow() and I'd rather not 559 * do that. So just do it the easy way for now. Since this 560 * only happens once, I'm not terribly concerned. 561 */ 562 563 pp = outopts->paper; 564 if (pp != NULL && strcasecmp(pp, "letter") != 0) { 565 if (strcasecmp(pp, "a3") == 0) { 566 p->ps->medianame = "A3"; 567 pagex = 297; 568 pagey = 420; 569 } else if (strcasecmp(pp, "a4") == 0) { 570 p->ps->medianame = "A4"; 571 pagex = 210; 572 pagey = 297; 573 } else if (strcasecmp(pp, "a5") == 0) { 574 p->ps->medianame = "A5"; 575 pagex = 148; 576 pagey = 210; 577 } else if (strcasecmp(pp, "legal") == 0) { 578 p->ps->medianame = "Legal"; 579 pagex = 216; 580 pagey = 356; 581 } else if (sscanf(pp, "%ux%u", &pagex, &pagey) == 2) 582 p->ps->medianame = "CustomSize"; 583 else 584 warnx("%s: Unknown paper", pp); 585 } 586 587 /* 588 * This MUST be defined before any PNT2AFM or AFM2PNT 589 * calculations occur. 590 */ 591 592 p->ps->scale = 11; 593 594 /* Remember millimetres -> AFM units. */ 595 596 pagex = PNT2AFM(p, ((double)pagex * 72.0 / 25.4)); 597 pagey = PNT2AFM(p, ((double)pagey * 72.0 / 25.4)); 598 599 /* Margins are 1/9 the page x and y. */ 600 601 marginx = (size_t)((double)pagex / 9.0); 602 marginy = (size_t)((double)pagey / 9.0); 603 604 /* Line-height is 1.4em. */ 605 606 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 607 608 p->ps->width = p->ps->lastwidth = (size_t)pagex; 609 p->ps->height = (size_t)pagey; 610 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 611 p->ps->top = pagey - marginy; 612 p->ps->footer = (marginy / 2) - (lineheight / 2); 613 p->ps->bottom = marginy; 614 p->ps->left = marginx; 615 p->ps->lineheight = lineheight; 616 617 p->defrmargin = pagex - (marginx * 2); 618 return p; 619 } 620 621 static void 622 ps_setwidth(struct termp *p, int iop, int width) 623 { 624 size_t lastwidth; 625 626 lastwidth = p->ps->width; 627 if (iop > 0) 628 p->ps->width += width; 629 else if (iop == 0) 630 p->ps->width = width ? (size_t)width : p->ps->lastwidth; 631 else if (p->ps->width > (size_t)width) 632 p->ps->width -= width; 633 else 634 p->ps->width = 0; 635 p->ps->lastwidth = lastwidth; 636 } 637 638 void 639 pspdf_free(void *arg) 640 { 641 struct termp *p; 642 643 p = (struct termp *)arg; 644 645 free(p->ps->psmarg); 646 free(p->ps->pdfobjs); 647 648 free(p->ps); 649 term_free(p); 650 } 651 652 static void 653 ps_printf(struct termp *p, const char *fmt, ...) 654 { 655 va_list ap; 656 int pos, len; 657 658 va_start(ap, fmt); 659 660 /* 661 * If we're running in regular mode, then pipe directly into 662 * vprintf(). If we're processing margins, then push the data 663 * into our growable margin buffer. 664 */ 665 666 if ( ! (PS_MARGINS & p->ps->flags)) { 667 len = vprintf(fmt, ap); 668 va_end(ap); 669 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 670 return; 671 } 672 673 /* 674 * XXX: I assume that the in-margin print won't exceed 675 * PS_BUFSLOP (128 bytes), which is reasonable but still an 676 * assumption that will cause pukeage if it's not the case. 677 */ 678 679 ps_growbuf(p, PS_BUFSLOP); 680 681 pos = (int)p->ps->psmargcur; 682 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 683 684 va_end(ap); 685 686 p->ps->psmargcur = strlen(p->ps->psmarg); 687 } 688 689 static void 690 ps_putchar(struct termp *p, char c) 691 { 692 int pos; 693 694 /* See ps_printf(). */ 695 696 if ( ! (PS_MARGINS & p->ps->flags)) { 697 putchar(c); 698 p->ps->pdfbytes++; 699 return; 700 } 701 702 ps_growbuf(p, 2); 703 704 pos = (int)p->ps->psmargcur++; 705 p->ps->psmarg[pos++] = c; 706 p->ps->psmarg[pos] = '\0'; 707 } 708 709 static void 710 pdf_obj(struct termp *p, size_t obj) 711 { 712 713 assert(obj > 0); 714 715 if ((obj - 1) >= p->ps->pdfobjsz) { 716 p->ps->pdfobjsz = obj + 128; 717 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 718 p->ps->pdfobjsz, sizeof(size_t)); 719 } 720 721 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 722 ps_printf(p, "%zu 0 obj\n", obj); 723 } 724 725 static void 726 ps_closepage(struct termp *p) 727 { 728 int i; 729 size_t len, base; 730 731 /* 732 * Close out a page that we've already flushed to output. In 733 * PostScript, we simply note that the page must be shown. In 734 * PDF, we must now create the Length, Resource, and Page node 735 * for the page contents. 736 */ 737 738 assert(p->ps->psmarg && p->ps->psmarg[0]); 739 ps_printf(p, "%s", p->ps->psmarg); 740 741 if (TERMTYPE_PS != p->type) { 742 len = p->ps->pdfbytes - p->ps->pdflastpg; 743 base = p->ps->pages * 4 + p->ps->pdfbody; 744 745 ps_printf(p, "endstream\nendobj\n"); 746 747 /* Length of content. */ 748 pdf_obj(p, base + 1); 749 ps_printf(p, "%zu\nendobj\n", len); 750 751 /* Resource for content. */ 752 pdf_obj(p, base + 2); 753 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 754 ps_printf(p, "/Font <<\n"); 755 for (i = 0; i < (int)TERMFONT__MAX; i++) 756 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 757 ps_printf(p, ">>\n>>\nendobj\n"); 758 759 /* Page node. */ 760 pdf_obj(p, base + 3); 761 ps_printf(p, "<<\n"); 762 ps_printf(p, "/Type /Page\n"); 763 ps_printf(p, "/Parent 2 0 R\n"); 764 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 765 ps_printf(p, "/Contents %zu 0 R\n", base); 766 ps_printf(p, ">>\nendobj\n"); 767 } else 768 ps_printf(p, "showpage\n"); 769 770 p->ps->pages++; 771 p->ps->psrow = p->ps->top; 772 assert( ! (PS_NEWPAGE & p->ps->flags)); 773 p->ps->flags |= PS_NEWPAGE; 774 } 775 776 static void 777 ps_end(struct termp *p) 778 { 779 size_t i, xref, base; 780 781 ps_plast(p); 782 ps_pclose(p); 783 784 /* 785 * At the end of the file, do one last showpage. This is the 786 * same behaviour as groff(1) and works for multiple pages as 787 * well as just one. 788 */ 789 790 if ( ! (PS_NEWPAGE & p->ps->flags)) { 791 assert(0 == p->ps->flags); 792 assert('\0' == p->ps->last); 793 ps_closepage(p); 794 } 795 796 if (TERMTYPE_PS == p->type) { 797 ps_printf(p, "%%%%Trailer\n"); 798 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 799 ps_printf(p, "%%%%EOF\n"); 800 return; 801 } 802 803 pdf_obj(p, 2); 804 ps_printf(p, "<<\n/Type /Pages\n"); 805 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 806 (size_t)AFM2PNT(p, p->ps->width), 807 (size_t)AFM2PNT(p, p->ps->height)); 808 809 ps_printf(p, "/Count %zu\n", p->ps->pages); 810 ps_printf(p, "/Kids ["); 811 812 for (i = 0; i < p->ps->pages; i++) 813 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 814 815 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 816 817 ps_printf(p, "]\n>>\nendobj\n"); 818 pdf_obj(p, base); 819 ps_printf(p, "<<\n"); 820 ps_printf(p, "/Type /Catalog\n"); 821 ps_printf(p, "/Pages 2 0 R\n"); 822 ps_printf(p, ">>\nendobj\n"); 823 xref = p->ps->pdfbytes; 824 ps_printf(p, "xref\n"); 825 ps_printf(p, "0 %zu\n", base + 1); 826 ps_printf(p, "0000000000 65535 f \n"); 827 828 for (i = 0; i < base; i++) 829 ps_printf(p, "%.10zu 00000 n \n", 830 p->ps->pdfobjs[(int)i]); 831 832 ps_printf(p, "trailer\n"); 833 ps_printf(p, "<<\n"); 834 ps_printf(p, "/Size %zu\n", base + 1); 835 ps_printf(p, "/Root %zu 0 R\n", base); 836 ps_printf(p, "/Info 1 0 R\n"); 837 ps_printf(p, ">>\n"); 838 ps_printf(p, "startxref\n"); 839 ps_printf(p, "%zu\n", xref); 840 ps_printf(p, "%%%%EOF\n"); 841 } 842 843 static void 844 ps_begin(struct termp *p) 845 { 846 size_t width, height; 847 int i; 848 849 /* 850 * Print margins into margin buffer. Nothing gets output to the 851 * screen yet, so we don't need to initialise the primary state. 852 */ 853 854 if (p->ps->psmarg) { 855 assert(p->ps->psmargsz); 856 p->ps->psmarg[0] = '\0'; 857 } 858 859 /*p->ps->pdfbytes = 0;*/ 860 p->ps->psmargcur = 0; 861 p->ps->flags = PS_MARGINS; 862 p->ps->pscol = p->ps->left; 863 p->ps->psrow = p->ps->header; 864 p->ps->lastrow = 0; /* impossible row */ 865 866 ps_setfont(p, TERMFONT_NONE); 867 868 (*p->headf)(p, p->argf); 869 (*p->endline)(p); 870 871 p->ps->pscol = p->ps->left; 872 p->ps->psrow = p->ps->footer; 873 874 (*p->footf)(p, p->argf); 875 (*p->endline)(p); 876 877 p->ps->flags &= ~PS_MARGINS; 878 879 assert(0 == p->ps->flags); 880 assert(p->ps->psmarg); 881 assert('\0' != p->ps->psmarg[0]); 882 883 /* 884 * Print header and initialise page state. Following this, 885 * stuff gets printed to the screen, so make sure we're sane. 886 */ 887 888 if (TERMTYPE_PS == p->type) { 889 width = AFM2PNT(p, p->ps->width); 890 height = AFM2PNT(p, p->ps->height); 891 892 ps_printf(p, "%%!PS-Adobe-3.0\n"); 893 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 894 ps_printf(p, "%%%%Orientation: Portrait\n"); 895 ps_printf(p, "%%%%Pages: (atend)\n"); 896 ps_printf(p, "%%%%PageOrder: Ascend\n"); 897 ps_printf(p, "%%%%DocumentMedia: man-%s %zu %zu 0 () ()\n", 898 p->ps->medianame, width, height); 899 ps_printf(p, "%%%%DocumentNeededResources: font"); 900 901 for (i = 0; i < (int)TERMFONT__MAX; i++) 902 ps_printf(p, " %s", fonts[i].name); 903 904 ps_printf(p, "\n%%%%DocumentSuppliedResources: " 905 "procset MandocProcs 1.0 0\n"); 906 ps_printf(p, "%%%%EndComments\n"); 907 ps_printf(p, "%%%%BeginProlog\n"); 908 ps_printf(p, "%%%%BeginResource: procset MandocProcs " 909 "10170 10170\n"); 910 /* The font size is effectively hard-coded for now. */ 911 ps_printf(p, "/fs %zu def\n", p->ps->scale); 912 for (i = 0; i < (int)TERMFONT__MAX; i++) 913 ps_printf(p, "/f%d { /%s fs selectfont } def\n", 914 i, fonts[i].name); 915 ps_printf(p, "/s { 3 1 roll moveto show } bind def\n"); 916 ps_printf(p, "/c { exch currentpoint exch pop " 917 "moveto show } bind def\n"); 918 ps_printf(p, "%%%%EndResource\n"); 919 ps_printf(p, "%%%%EndProlog\n"); 920 ps_printf(p, "%%%%BeginSetup\n"); 921 ps_printf(p, "%%%%BeginFeature: *PageSize %s\n", 922 p->ps->medianame); 923 ps_printf(p, "<</PageSize [%zu %zu]>>setpagedevice\n", 924 width, height); 925 ps_printf(p, "%%%%EndFeature\n"); 926 ps_printf(p, "%%%%EndSetup\n"); 927 } else { 928 ps_printf(p, "%%PDF-1.1\n"); 929 pdf_obj(p, 1); 930 ps_printf(p, "<<\n"); 931 ps_printf(p, ">>\n"); 932 ps_printf(p, "endobj\n"); 933 934 for (i = 0; i < (int)TERMFONT__MAX; i++) { 935 pdf_obj(p, (size_t)i + 3); 936 ps_printf(p, "<<\n"); 937 ps_printf(p, "/Type /Font\n"); 938 ps_printf(p, "/Subtype /Type1\n"); 939 ps_printf(p, "/Name /F%d\n", i); 940 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 941 ps_printf(p, ">>\nendobj\n"); 942 } 943 } 944 945 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 946 p->ps->pscol = p->ps->left; 947 p->ps->psrow = p->ps->top; 948 p->ps->flags |= PS_NEWPAGE; 949 ps_setfont(p, TERMFONT_NONE); 950 } 951 952 static void 953 ps_pletter(struct termp *p, int c) 954 { 955 int f; 956 957 /* 958 * If we haven't opened a page context, then output that we're 959 * in a new page and make sure the font is correctly set. 960 */ 961 962 if (PS_NEWPAGE & p->ps->flags) { 963 if (TERMTYPE_PS == p->type) { 964 ps_printf(p, "%%%%Page: %zu %zu\n", 965 p->ps->pages + 1, p->ps->pages + 1); 966 ps_printf(p, "f%d\n", (int)p->ps->lastf); 967 } else { 968 pdf_obj(p, p->ps->pdfbody + 969 p->ps->pages * 4); 970 ps_printf(p, "<<\n"); 971 ps_printf(p, "/Length %zu 0 R\n", 972 p->ps->pdfbody + 1 + p->ps->pages * 4); 973 ps_printf(p, ">>\nstream\n"); 974 } 975 p->ps->pdflastpg = p->ps->pdfbytes; 976 p->ps->flags &= ~PS_NEWPAGE; 977 } 978 979 /* 980 * If we're not in a PostScript "word" context, then open one 981 * now at the current cursor. 982 */ 983 984 if ( ! (PS_INLINE & p->ps->flags)) { 985 if (TERMTYPE_PS != p->type) { 986 ps_printf(p, "BT\n/F%d %zu Tf\n", 987 (int)p->ps->lastf, p->ps->scale); 988 ps_printf(p, "%.3f %.3f Td\n(", 989 AFM2PNT(p, p->ps->pscol), 990 AFM2PNT(p, p->ps->psrow)); 991 } else { 992 ps_printf(p, "%.3f", AFM2PNT(p, p->ps->pscol)); 993 if (p->ps->psrow != p->ps->lastrow) 994 ps_printf(p, " %.3f", 995 AFM2PNT(p, p->ps->psrow)); 996 ps_printf(p, "("); 997 } 998 p->ps->flags |= PS_INLINE; 999 } 1000 1001 assert( ! (PS_NEWPAGE & p->ps->flags)); 1002 1003 /* 1004 * We need to escape these characters as per the PostScript 1005 * specification. We would also escape non-graphable characters 1006 * (like tabs), but none of them would get to this point and 1007 * it's superfluous to abort() on them. 1008 */ 1009 1010 switch (c) { 1011 case '(': 1012 case ')': 1013 case '\\': 1014 ps_putchar(p, '\\'); 1015 break; 1016 default: 1017 break; 1018 } 1019 1020 /* Write the character and adjust where we are on the page. */ 1021 1022 f = (int)p->ps->lastf; 1023 1024 if (c <= 32 || c - 32 >= MAXCHAR) 1025 c = 32; 1026 1027 ps_putchar(p, (char)c); 1028 c -= 32; 1029 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 1030 } 1031 1032 static void 1033 ps_pclose(struct termp *p) 1034 { 1035 1036 /* 1037 * Spit out that we're exiting a word context (this is a 1038 * "partial close" because we don't check the last-char buffer 1039 * or anything). 1040 */ 1041 1042 if ( ! (PS_INLINE & p->ps->flags)) 1043 return; 1044 1045 if (TERMTYPE_PS != p->type) 1046 ps_printf(p, ") Tj\nET\n"); 1047 else if (p->ps->psrow == p->ps->lastrow) 1048 ps_printf(p, ")c\n"); 1049 else { 1050 ps_printf(p, ")s\n"); 1051 p->ps->lastrow = p->ps->psrow; 1052 } 1053 1054 p->ps->flags &= ~PS_INLINE; 1055 } 1056 1057 /* If we have a `last' char that wasn't printed yet, print it now. */ 1058 static void 1059 ps_plast(struct termp *p) 1060 { 1061 size_t wx; 1062 1063 if (p->ps->last == '\0') 1064 return; 1065 1066 /* Check the font mode; open a new scope if it doesn't match. */ 1067 1068 if (p->ps->nextf != p->ps->lastf) { 1069 ps_pclose(p); 1070 ps_setfont(p, p->ps->nextf); 1071 } 1072 p->ps->nextf = TERMFONT_NONE; 1073 1074 /* 1075 * For an overstrike, if a previous character 1076 * was wider, advance to center the new one. 1077 */ 1078 1079 if (p->ps->pscolnext) { 1080 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; 1081 if (p->ps->pscol + wx < p->ps->pscolnext) 1082 p->ps->pscol = (p->ps->pscol + 1083 p->ps->pscolnext - wx) / 2; 1084 } 1085 1086 ps_pletter(p, p->ps->last); 1087 p->ps->last = '\0'; 1088 1089 /* 1090 * For an overstrike, if a previous character 1091 * was wider, advance to the end of the old one. 1092 */ 1093 1094 if (p->ps->pscol < p->ps->pscolnext) { 1095 ps_pclose(p); 1096 p->ps->pscol = p->ps->pscolnext; 1097 } 1098 } 1099 1100 static void 1101 ps_letter(struct termp *p, int arg) 1102 { 1103 size_t savecol; 1104 char c; 1105 1106 c = arg >= 128 || arg <= 0 ? '?' : arg; 1107 1108 /* 1109 * When receiving a backspace, merely flag it. 1110 * We don't know yet whether it is 1111 * a font instruction or an overstrike. 1112 */ 1113 1114 if (c == '\b') { 1115 assert(p->ps->last != '\0'); 1116 assert( ! (p->ps->flags & PS_BACKSP)); 1117 p->ps->flags |= PS_BACKSP; 1118 return; 1119 } 1120 1121 /* 1122 * Decode font instructions. 1123 */ 1124 1125 if (p->ps->flags & PS_BACKSP) { 1126 if (p->ps->last == '_') { 1127 switch (p->ps->nextf) { 1128 case TERMFONT_BI: 1129 break; 1130 case TERMFONT_BOLD: 1131 p->ps->nextf = TERMFONT_BI; 1132 break; 1133 default: 1134 p->ps->nextf = TERMFONT_UNDER; 1135 } 1136 p->ps->last = c; 1137 p->ps->flags &= ~PS_BACKSP; 1138 return; 1139 } 1140 if (p->ps->last == c) { 1141 switch (p->ps->nextf) { 1142 case TERMFONT_BI: 1143 break; 1144 case TERMFONT_UNDER: 1145 p->ps->nextf = TERMFONT_BI; 1146 break; 1147 default: 1148 p->ps->nextf = TERMFONT_BOLD; 1149 } 1150 p->ps->flags &= ~PS_BACKSP; 1151 return; 1152 } 1153 1154 /* 1155 * This is not a font instruction, but rather 1156 * the next character. Prepare for overstrike. 1157 */ 1158 1159 savecol = p->ps->pscol; 1160 } else 1161 savecol = SIZE_MAX; 1162 1163 /* 1164 * We found the next character, so the font instructions 1165 * for the previous one are complete. 1166 * Use them and print it. 1167 */ 1168 1169 ps_plast(p); 1170 1171 /* 1172 * Do not print the current character yet because font 1173 * instructions might follow; only remember the character. 1174 * It will get printed later from ps_plast(). 1175 */ 1176 1177 p->ps->last = c; 1178 1179 /* 1180 * For an overstrike, back up to the previous position. 1181 * If the previous character is wider than any it overstrikes, 1182 * remember the current position, because it might also be 1183 * wider than all that will overstrike it. 1184 */ 1185 1186 if (savecol != SIZE_MAX) { 1187 if (p->ps->pscolnext < p->ps->pscol) 1188 p->ps->pscolnext = p->ps->pscol; 1189 ps_pclose(p); 1190 p->ps->pscol = savecol; 1191 p->ps->flags &= ~PS_BACKSP; 1192 } else 1193 p->ps->pscolnext = 0; 1194 } 1195 1196 static void 1197 ps_advance(struct termp *p, size_t len) 1198 { 1199 1200 /* 1201 * Advance some spaces. This can probably be made smarter, 1202 * i.e., to have multiple space-separated words in the same 1203 * scope, but this is easier: just close out the current scope 1204 * and readjust our column settings. 1205 */ 1206 1207 ps_plast(p); 1208 ps_pclose(p); 1209 p->ps->pscol += len; 1210 } 1211 1212 static void 1213 ps_endline(struct termp *p) 1214 { 1215 1216 /* Close out any scopes we have open: we're at eoln. */ 1217 1218 ps_plast(p); 1219 ps_pclose(p); 1220 1221 /* 1222 * If we're in the margin, don't try to recalculate our current 1223 * row. XXX: if the column tries to be fancy with multiple 1224 * lines, we'll do nasty stuff. 1225 */ 1226 1227 if (PS_MARGINS & p->ps->flags) 1228 return; 1229 1230 /* Left-justify. */ 1231 1232 p->ps->pscol = p->ps->left; 1233 1234 /* If we haven't printed anything, return. */ 1235 1236 if (PS_NEWPAGE & p->ps->flags) 1237 return; 1238 1239 /* 1240 * Put us down a line. If we're at the page bottom, spit out a 1241 * showpage and restart our row. 1242 */ 1243 1244 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1245 p->ps->psrow -= p->ps->lineheight; 1246 return; 1247 } 1248 1249 ps_closepage(p); 1250 1251 if ((int)p->tcol->offset > p->ti) 1252 p->tcol->offset -= p->ti; 1253 else 1254 p->tcol->offset = 0; 1255 p->ti = 0; 1256 } 1257 1258 static void 1259 ps_setfont(struct termp *p, enum termfont f) 1260 { 1261 1262 assert(f < TERMFONT__MAX); 1263 p->ps->lastf = f; 1264 1265 /* 1266 * If we're still at the top of the page, let the font-setting 1267 * be delayed until we actually have stuff to print. 1268 */ 1269 1270 if (PS_NEWPAGE & p->ps->flags) 1271 return; 1272 1273 if (TERMTYPE_PS == p->type) 1274 ps_printf(p, "f%d\n", (int)f); 1275 else 1276 ps_printf(p, "/F%d %zu Tf\n", 1277 (int)f, p->ps->scale); 1278 } 1279 1280 static size_t 1281 ps_width(const struct termp *p, int c) 1282 { 1283 1284 if (c <= 32 || c - 32 >= MAXCHAR) 1285 c = 0; 1286 else 1287 c -= 32; 1288 1289 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx; 1290 } 1291 1292 static int 1293 ps_hspan(const struct termp *p, const struct roffsu *su) 1294 { 1295 double r; 1296 1297 /* 1298 * All of these measurements are derived by converting from the 1299 * native measurement to AFM units. 1300 */ 1301 switch (su->unit) { 1302 case SCALE_BU: 1303 /* 1304 * Traditionally, the default unit is fixed to the 1305 * output media. So this would refer to the point. In 1306 * mandoc(1), however, we stick to the default terminal 1307 * scaling unit so that output is the same regardless 1308 * the media. 1309 */ 1310 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1311 break; 1312 case SCALE_CM: 1313 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1314 break; 1315 case SCALE_EM: 1316 r = su->scale * 1317 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1318 break; 1319 case SCALE_EN: 1320 r = su->scale * 1321 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1322 break; 1323 case SCALE_IN: 1324 r = PNT2AFM(p, su->scale * 72.0); 1325 break; 1326 case SCALE_MM: 1327 r = su->scale * 1328 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1329 break; 1330 case SCALE_PC: 1331 r = PNT2AFM(p, su->scale * 12.0); 1332 break; 1333 case SCALE_PT: 1334 r = PNT2AFM(p, su->scale * 1.0); 1335 break; 1336 case SCALE_VS: 1337 r = su->scale * p->ps->lineheight; 1338 break; 1339 default: 1340 r = su->scale; 1341 break; 1342 } 1343 1344 return r * 24.0; 1345 } 1346 1347 static void 1348 ps_growbuf(struct termp *p, size_t sz) 1349 { 1350 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1351 return; 1352 1353 if (sz < PS_BUFSLOP) 1354 sz = PS_BUFSLOP; 1355 1356 p->ps->psmargsz += sz; 1357 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1358 } 1359