1 /* $Id: term_ps.c,v 1.83 2017/02/17 14:31:52 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2014, 2015, 2016 Ingo Schwarze <schwarze@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 #include "config.h" 19 20 #include <sys/types.h> 21 22 #include <assert.h> 23 #if HAVE_ERR 24 #include <err.h> 25 #endif 26 #include <stdarg.h> 27 #include <stdint.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <unistd.h> 32 33 #include "mandoc_aux.h" 34 #include "out.h" 35 #include "term.h" 36 #include "manconf.h" 37 #include "main.h" 38 39 /* These work the buffer used by the header and footer. */ 40 #define PS_BUFSLOP 128 41 42 /* Convert PostScript point "x" to an AFM unit. */ 43 #define PNT2AFM(p, x) \ 44 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 45 46 /* Convert an AFM unit "x" to a PostScript points */ 47 #define AFM2PNT(p, x) \ 48 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 49 50 struct glyph { 51 unsigned short wx; /* WX in AFM */ 52 }; 53 54 struct font { 55 const char *name; /* FontName in AFM */ 56 #define MAXCHAR 95 /* total characters we can handle */ 57 struct glyph gly[MAXCHAR]; /* glyph metrics */ 58 }; 59 60 struct termp_ps { 61 int flags; 62 #define PS_INLINE (1 << 0) /* we're in a word */ 63 #define PS_MARGINS (1 << 1) /* we're in the margins */ 64 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 65 #define PS_BACKSP (1 << 3) /* last character was backspace */ 66 size_t pscol; /* visible column (AFM units) */ 67 size_t pscolnext; /* used for overstrike */ 68 size_t psrow; /* visible row (AFM units) */ 69 char *psmarg; /* margin buf */ 70 size_t psmargsz; /* margin buf size */ 71 size_t psmargcur; /* cur index in margin buf */ 72 char last; /* last non-backspace seen */ 73 enum termfont lastf; /* last set font */ 74 enum termfont nextf; /* building next font here */ 75 size_t scale; /* font scaling factor */ 76 size_t pages; /* number of pages shown */ 77 size_t lineheight; /* line height (AFM units) */ 78 size_t top; /* body top (AFM units) */ 79 size_t bottom; /* body bottom (AFM units) */ 80 size_t height; /* page height (AFM units */ 81 size_t width; /* page width (AFM units) */ 82 size_t lastwidth; /* page width before last ll */ 83 size_t left; /* body left (AFM units) */ 84 size_t header; /* header pos (AFM units) */ 85 size_t footer; /* footer pos (AFM units) */ 86 size_t pdfbytes; /* current output byte */ 87 size_t pdflastpg; /* byte of last page mark */ 88 size_t pdfbody; /* start of body object */ 89 size_t *pdfobjs; /* table of object offsets */ 90 size_t pdfobjsz; /* size of pdfobjs */ 91 }; 92 93 static int ps_hspan(const struct termp *, 94 const struct roffsu *); 95 static size_t ps_width(const struct termp *, int); 96 static void ps_advance(struct termp *, size_t); 97 static void ps_begin(struct termp *); 98 static void ps_closepage(struct termp *); 99 static void ps_end(struct termp *); 100 static void ps_endline(struct termp *); 101 static void ps_growbuf(struct termp *, size_t); 102 static void ps_letter(struct termp *, int); 103 static void ps_pclose(struct termp *); 104 static void ps_plast(struct termp *); 105 static void ps_pletter(struct termp *, int); 106 static void ps_printf(struct termp *, const char *, ...) 107 __attribute__((__format__ (__printf__, 2, 3))); 108 static void ps_putchar(struct termp *, char); 109 static void ps_setfont(struct termp *, enum termfont); 110 static void ps_setwidth(struct termp *, int, int); 111 static struct termp *pspdf_alloc(const struct manoutput *); 112 static void pdf_obj(struct termp *, size_t); 113 114 /* 115 * We define, for the time being, three fonts: bold, oblique/italic, and 116 * normal (roman). The following table hard-codes the font metrics for 117 * ASCII, i.e., 32--127. 118 */ 119 120 static const struct font fonts[TERMFONT__MAX] = { 121 { "Times-Roman", { 122 { 250 }, 123 { 333 }, 124 { 408 }, 125 { 500 }, 126 { 500 }, 127 { 833 }, 128 { 778 }, 129 { 333 }, 130 { 333 }, 131 { 333 }, 132 { 500 }, 133 { 564 }, 134 { 250 }, 135 { 333 }, 136 { 250 }, 137 { 278 }, 138 { 500 }, 139 { 500 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 500 }, 144 { 500 }, 145 { 500 }, 146 { 500 }, 147 { 500 }, 148 { 278 }, 149 { 278 }, 150 { 564 }, 151 { 564 }, 152 { 564 }, 153 { 444 }, 154 { 921 }, 155 { 722 }, 156 { 667 }, 157 { 667 }, 158 { 722 }, 159 { 611 }, 160 { 556 }, 161 { 722 }, 162 { 722 }, 163 { 333 }, 164 { 389 }, 165 { 722 }, 166 { 611 }, 167 { 889 }, 168 { 722 }, 169 { 722 }, 170 { 556 }, 171 { 722 }, 172 { 667 }, 173 { 556 }, 174 { 611 }, 175 { 722 }, 176 { 722 }, 177 { 944 }, 178 { 722 }, 179 { 722 }, 180 { 611 }, 181 { 333 }, 182 { 278 }, 183 { 333 }, 184 { 469 }, 185 { 500 }, 186 { 333 }, 187 { 444 }, 188 { 500 }, 189 { 444 }, 190 { 500}, 191 { 444}, 192 { 333}, 193 { 500}, 194 { 500}, 195 { 278}, 196 { 278}, 197 { 500}, 198 { 278}, 199 { 778}, 200 { 500}, 201 { 500}, 202 { 500}, 203 { 500}, 204 { 333}, 205 { 389}, 206 { 278}, 207 { 500}, 208 { 500}, 209 { 722}, 210 { 500}, 211 { 500}, 212 { 444}, 213 { 480}, 214 { 200}, 215 { 480}, 216 { 541}, 217 } }, 218 { "Times-Bold", { 219 { 250 }, 220 { 333 }, 221 { 555 }, 222 { 500 }, 223 { 500 }, 224 { 1000 }, 225 { 833 }, 226 { 333 }, 227 { 333 }, 228 { 333 }, 229 { 500 }, 230 { 570 }, 231 { 250 }, 232 { 333 }, 233 { 250 }, 234 { 278 }, 235 { 500 }, 236 { 500 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 500 }, 241 { 500 }, 242 { 500 }, 243 { 500 }, 244 { 500 }, 245 { 333 }, 246 { 333 }, 247 { 570 }, 248 { 570 }, 249 { 570 }, 250 { 500 }, 251 { 930 }, 252 { 722 }, 253 { 667 }, 254 { 722 }, 255 { 722 }, 256 { 667 }, 257 { 611 }, 258 { 778 }, 259 { 778 }, 260 { 389 }, 261 { 500 }, 262 { 778 }, 263 { 667 }, 264 { 944 }, 265 { 722 }, 266 { 778 }, 267 { 611 }, 268 { 778 }, 269 { 722 }, 270 { 556 }, 271 { 667 }, 272 { 722 }, 273 { 722 }, 274 { 1000 }, 275 { 722 }, 276 { 722 }, 277 { 667 }, 278 { 333 }, 279 { 278 }, 280 { 333 }, 281 { 581 }, 282 { 500 }, 283 { 333 }, 284 { 500 }, 285 { 556 }, 286 { 444 }, 287 { 556 }, 288 { 444 }, 289 { 333 }, 290 { 500 }, 291 { 556 }, 292 { 278 }, 293 { 333 }, 294 { 556 }, 295 { 278 }, 296 { 833 }, 297 { 556 }, 298 { 500 }, 299 { 556 }, 300 { 556 }, 301 { 444 }, 302 { 389 }, 303 { 333 }, 304 { 556 }, 305 { 500 }, 306 { 722 }, 307 { 500 }, 308 { 500 }, 309 { 444 }, 310 { 394 }, 311 { 220 }, 312 { 394 }, 313 { 520 }, 314 } }, 315 { "Times-Italic", { 316 { 250 }, 317 { 333 }, 318 { 420 }, 319 { 500 }, 320 { 500 }, 321 { 833 }, 322 { 778 }, 323 { 333 }, 324 { 333 }, 325 { 333 }, 326 { 500 }, 327 { 675 }, 328 { 250 }, 329 { 333 }, 330 { 250 }, 331 { 278 }, 332 { 500 }, 333 { 500 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 500 }, 338 { 500 }, 339 { 500 }, 340 { 500 }, 341 { 500 }, 342 { 333 }, 343 { 333 }, 344 { 675 }, 345 { 675 }, 346 { 675 }, 347 { 500 }, 348 { 920 }, 349 { 611 }, 350 { 611 }, 351 { 667 }, 352 { 722 }, 353 { 611 }, 354 { 611 }, 355 { 722 }, 356 { 722 }, 357 { 333 }, 358 { 444 }, 359 { 667 }, 360 { 556 }, 361 { 833 }, 362 { 667 }, 363 { 722 }, 364 { 611 }, 365 { 722 }, 366 { 611 }, 367 { 500 }, 368 { 556 }, 369 { 722 }, 370 { 611 }, 371 { 833 }, 372 { 611 }, 373 { 556 }, 374 { 556 }, 375 { 389 }, 376 { 278 }, 377 { 389 }, 378 { 422 }, 379 { 500 }, 380 { 333 }, 381 { 500 }, 382 { 500 }, 383 { 444 }, 384 { 500 }, 385 { 444 }, 386 { 278 }, 387 { 500 }, 388 { 500 }, 389 { 278 }, 390 { 278 }, 391 { 444 }, 392 { 278 }, 393 { 722 }, 394 { 500 }, 395 { 500 }, 396 { 500 }, 397 { 500 }, 398 { 389 }, 399 { 389 }, 400 { 278 }, 401 { 500 }, 402 { 444 }, 403 { 667 }, 404 { 444 }, 405 { 444 }, 406 { 389 }, 407 { 400 }, 408 { 275 }, 409 { 400 }, 410 { 541 }, 411 } }, 412 { "Times-BoldItalic", { 413 { 250 }, 414 { 389 }, 415 { 555 }, 416 { 500 }, 417 { 500 }, 418 { 833 }, 419 { 778 }, 420 { 333 }, 421 { 333 }, 422 { 333 }, 423 { 500 }, 424 { 570 }, 425 { 250 }, 426 { 333 }, 427 { 250 }, 428 { 278 }, 429 { 500 }, 430 { 500 }, 431 { 500 }, 432 { 500 }, 433 { 500 }, 434 { 500 }, 435 { 500 }, 436 { 500 }, 437 { 500 }, 438 { 500 }, 439 { 333 }, 440 { 333 }, 441 { 570 }, 442 { 570 }, 443 { 570 }, 444 { 500 }, 445 { 832 }, 446 { 667 }, 447 { 667 }, 448 { 667 }, 449 { 722 }, 450 { 667 }, 451 { 667 }, 452 { 722 }, 453 { 778 }, 454 { 389 }, 455 { 500 }, 456 { 667 }, 457 { 611 }, 458 { 889 }, 459 { 722 }, 460 { 722 }, 461 { 611 }, 462 { 722 }, 463 { 667 }, 464 { 556 }, 465 { 611 }, 466 { 722 }, 467 { 667 }, 468 { 889 }, 469 { 667 }, 470 { 611 }, 471 { 611 }, 472 { 333 }, 473 { 278 }, 474 { 333 }, 475 { 570 }, 476 { 500 }, 477 { 333 }, 478 { 500 }, 479 { 500 }, 480 { 444 }, 481 { 500 }, 482 { 444 }, 483 { 333 }, 484 { 500 }, 485 { 556 }, 486 { 278 }, 487 { 278 }, 488 { 500 }, 489 { 278 }, 490 { 778 }, 491 { 556 }, 492 { 500 }, 493 { 500 }, 494 { 500 }, 495 { 389 }, 496 { 389 }, 497 { 278 }, 498 { 556 }, 499 { 444 }, 500 { 667 }, 501 { 500 }, 502 { 444 }, 503 { 389 }, 504 { 348 }, 505 { 220 }, 506 { 348 }, 507 { 570 }, 508 } }, 509 }; 510 511 void * 512 pdf_alloc(const struct manoutput *outopts) 513 { 514 struct termp *p; 515 516 if (NULL != (p = pspdf_alloc(outopts))) 517 p->type = TERMTYPE_PDF; 518 519 return p; 520 } 521 522 void * 523 ps_alloc(const struct manoutput *outopts) 524 { 525 struct termp *p; 526 527 if (NULL != (p = pspdf_alloc(outopts))) 528 p->type = TERMTYPE_PS; 529 530 return p; 531 } 532 533 static struct termp * 534 pspdf_alloc(const struct manoutput *outopts) 535 { 536 struct termp *p; 537 unsigned int pagex, pagey; 538 size_t marginx, marginy, lineheight; 539 const char *pp; 540 541 p = mandoc_calloc(1, sizeof(struct termp)); 542 p->enc = TERMENC_ASCII; 543 p->fontq = mandoc_reallocarray(NULL, 544 (p->fontsz = 8), sizeof(enum termfont)); 545 p->fontq[0] = p->fontl = TERMFONT_NONE; 546 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 547 548 p->advance = ps_advance; 549 p->begin = ps_begin; 550 p->end = ps_end; 551 p->endline = ps_endline; 552 p->hspan = ps_hspan; 553 p->letter = ps_letter; 554 p->setwidth = ps_setwidth; 555 p->width = ps_width; 556 557 /* Default to US letter (millimetres). */ 558 559 pagex = 216; 560 pagey = 279; 561 562 /* 563 * The ISO-269 paper sizes can be calculated automatically, but 564 * it would require bringing in -lm for pow() and I'd rather not 565 * do that. So just do it the easy way for now. Since this 566 * only happens once, I'm not terribly concerned. 567 */ 568 569 pp = outopts->paper; 570 if (pp && strcasecmp(pp, "letter")) { 571 if (0 == strcasecmp(pp, "a3")) { 572 pagex = 297; 573 pagey = 420; 574 } else if (0 == strcasecmp(pp, "a4")) { 575 pagex = 210; 576 pagey = 297; 577 } else if (0 == strcasecmp(pp, "a5")) { 578 pagex = 148; 579 pagey = 210; 580 } else if (0 == strcasecmp(pp, "legal")) { 581 pagex = 216; 582 pagey = 356; 583 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 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 * 2.834)); 597 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 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 showed. 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 ps_printf(p, "ET\n"); 743 744 len = p->ps->pdfbytes - p->ps->pdflastpg; 745 base = p->ps->pages * 4 + p->ps->pdfbody; 746 747 ps_printf(p, "endstream\nendobj\n"); 748 749 /* Length of content. */ 750 pdf_obj(p, base + 1); 751 ps_printf(p, "%zu\nendobj\n", len); 752 753 /* Resource for content. */ 754 pdf_obj(p, base + 2); 755 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 756 ps_printf(p, "/Font <<\n"); 757 for (i = 0; i < (int)TERMFONT__MAX; i++) 758 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 759 ps_printf(p, ">>\n>>\n"); 760 761 /* Page node. */ 762 pdf_obj(p, base + 3); 763 ps_printf(p, "<<\n"); 764 ps_printf(p, "/Type /Page\n"); 765 ps_printf(p, "/Parent 2 0 R\n"); 766 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 767 ps_printf(p, "/Contents %zu 0 R\n", base); 768 ps_printf(p, ">>\nendobj\n"); 769 } else 770 ps_printf(p, "showpage\n"); 771 772 p->ps->pages++; 773 p->ps->psrow = p->ps->top; 774 assert( ! (PS_NEWPAGE & p->ps->flags)); 775 p->ps->flags |= PS_NEWPAGE; 776 } 777 778 static void 779 ps_end(struct termp *p) 780 { 781 size_t i, xref, base; 782 783 ps_plast(p); 784 ps_pclose(p); 785 786 /* 787 * At the end of the file, do one last showpage. This is the 788 * same behaviour as groff(1) and works for multiple pages as 789 * well as just one. 790 */ 791 792 if ( ! (PS_NEWPAGE & p->ps->flags)) { 793 assert(0 == p->ps->flags); 794 assert('\0' == p->ps->last); 795 ps_closepage(p); 796 } 797 798 if (TERMTYPE_PS == p->type) { 799 ps_printf(p, "%%%%Trailer\n"); 800 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 801 ps_printf(p, "%%%%EOF\n"); 802 return; 803 } 804 805 pdf_obj(p, 2); 806 ps_printf(p, "<<\n/Type /Pages\n"); 807 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 808 (size_t)AFM2PNT(p, p->ps->width), 809 (size_t)AFM2PNT(p, p->ps->height)); 810 811 ps_printf(p, "/Count %zu\n", p->ps->pages); 812 ps_printf(p, "/Kids ["); 813 814 for (i = 0; i < p->ps->pages; i++) 815 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 816 817 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 818 819 ps_printf(p, "]\n>>\nendobj\n"); 820 pdf_obj(p, base); 821 ps_printf(p, "<<\n"); 822 ps_printf(p, "/Type /Catalog\n"); 823 ps_printf(p, "/Pages 2 0 R\n"); 824 ps_printf(p, ">>\n"); 825 xref = p->ps->pdfbytes; 826 ps_printf(p, "xref\n"); 827 ps_printf(p, "0 %zu\n", base + 1); 828 ps_printf(p, "0000000000 65535 f \n"); 829 830 for (i = 0; i < base; i++) 831 ps_printf(p, "%.10zu 00000 n \n", 832 p->ps->pdfobjs[(int)i]); 833 834 ps_printf(p, "trailer\n"); 835 ps_printf(p, "<<\n"); 836 ps_printf(p, "/Size %zu\n", base + 1); 837 ps_printf(p, "/Root %zu 0 R\n", base); 838 ps_printf(p, "/Info 1 0 R\n"); 839 ps_printf(p, ">>\n"); 840 ps_printf(p, "startxref\n"); 841 ps_printf(p, "%zu\n", xref); 842 ps_printf(p, "%%%%EOF\n"); 843 } 844 845 static void 846 ps_begin(struct termp *p) 847 { 848 int i; 849 850 /* 851 * Print margins into margin buffer. Nothing gets output to the 852 * screen yet, so we don't need to initialise the primary state. 853 */ 854 855 if (p->ps->psmarg) { 856 assert(p->ps->psmargsz); 857 p->ps->psmarg[0] = '\0'; 858 } 859 860 /*p->ps->pdfbytes = 0;*/ 861 p->ps->psmargcur = 0; 862 p->ps->flags = PS_MARGINS; 863 p->ps->pscol = p->ps->left; 864 p->ps->psrow = p->ps->header; 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 ps_printf(p, "%%!PS-Adobe-3.0\n"); 890 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 891 ps_printf(p, "%%%%Orientation: Portrait\n"); 892 ps_printf(p, "%%%%Pages: (atend)\n"); 893 ps_printf(p, "%%%%PageOrder: Ascend\n"); 894 ps_printf(p, "%%%%DocumentMedia: " 895 "Default %zu %zu 0 () ()\n", 896 (size_t)AFM2PNT(p, p->ps->width), 897 (size_t)AFM2PNT(p, p->ps->height)); 898 ps_printf(p, "%%%%DocumentNeededResources: font"); 899 900 for (i = 0; i < (int)TERMFONT__MAX; i++) 901 ps_printf(p, " %s", fonts[i].name); 902 903 ps_printf(p, "\n%%%%EndComments\n"); 904 } else { 905 ps_printf(p, "%%PDF-1.1\n"); 906 pdf_obj(p, 1); 907 ps_printf(p, "<<\n"); 908 ps_printf(p, ">>\n"); 909 ps_printf(p, "endobj\n"); 910 911 for (i = 0; i < (int)TERMFONT__MAX; i++) { 912 pdf_obj(p, (size_t)i + 3); 913 ps_printf(p, "<<\n"); 914 ps_printf(p, "/Type /Font\n"); 915 ps_printf(p, "/Subtype /Type1\n"); 916 ps_printf(p, "/Name /F%d\n", i); 917 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 918 ps_printf(p, ">>\n"); 919 } 920 } 921 922 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 923 p->ps->pscol = p->ps->left; 924 p->ps->psrow = p->ps->top; 925 p->ps->flags |= PS_NEWPAGE; 926 ps_setfont(p, TERMFONT_NONE); 927 } 928 929 static void 930 ps_pletter(struct termp *p, int c) 931 { 932 int f; 933 934 /* 935 * If we haven't opened a page context, then output that we're 936 * in a new page and make sure the font is correctly set. 937 */ 938 939 if (PS_NEWPAGE & p->ps->flags) { 940 if (TERMTYPE_PS == p->type) { 941 ps_printf(p, "%%%%Page: %zu %zu\n", 942 p->ps->pages + 1, p->ps->pages + 1); 943 ps_printf(p, "/%s %zu selectfont\n", 944 fonts[(int)p->ps->lastf].name, 945 p->ps->scale); 946 } else { 947 pdf_obj(p, p->ps->pdfbody + 948 p->ps->pages * 4); 949 ps_printf(p, "<<\n"); 950 ps_printf(p, "/Length %zu 0 R\n", 951 p->ps->pdfbody + 1 + p->ps->pages * 4); 952 ps_printf(p, ">>\nstream\n"); 953 } 954 p->ps->pdflastpg = p->ps->pdfbytes; 955 p->ps->flags &= ~PS_NEWPAGE; 956 } 957 958 /* 959 * If we're not in a PostScript "word" context, then open one 960 * now at the current cursor. 961 */ 962 963 if ( ! (PS_INLINE & p->ps->flags)) { 964 if (TERMTYPE_PS != p->type) { 965 ps_printf(p, "BT\n/F%d %zu Tf\n", 966 (int)p->ps->lastf, p->ps->scale); 967 ps_printf(p, "%.3f %.3f Td\n(", 968 AFM2PNT(p, p->ps->pscol), 969 AFM2PNT(p, p->ps->psrow)); 970 } else 971 ps_printf(p, "%.3f %.3f moveto\n(", 972 AFM2PNT(p, p->ps->pscol), 973 AFM2PNT(p, p->ps->psrow)); 974 p->ps->flags |= PS_INLINE; 975 } 976 977 assert( ! (PS_NEWPAGE & p->ps->flags)); 978 979 /* 980 * We need to escape these characters as per the PostScript 981 * specification. We would also escape non-graphable characters 982 * (like tabs), but none of them would get to this point and 983 * it's superfluous to abort() on them. 984 */ 985 986 switch (c) { 987 case '(': 988 case ')': 989 case '\\': 990 ps_putchar(p, '\\'); 991 break; 992 default: 993 break; 994 } 995 996 /* Write the character and adjust where we are on the page. */ 997 998 f = (int)p->ps->lastf; 999 1000 if (c <= 32 || c - 32 >= MAXCHAR) 1001 c = 32; 1002 1003 ps_putchar(p, (char)c); 1004 c -= 32; 1005 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 1006 } 1007 1008 static void 1009 ps_pclose(struct termp *p) 1010 { 1011 1012 /* 1013 * Spit out that we're exiting a word context (this is a 1014 * "partial close" because we don't check the last-char buffer 1015 * or anything). 1016 */ 1017 1018 if ( ! (PS_INLINE & p->ps->flags)) 1019 return; 1020 1021 if (TERMTYPE_PS != p->type) { 1022 ps_printf(p, ") Tj\nET\n"); 1023 } else 1024 ps_printf(p, ") show\n"); 1025 1026 p->ps->flags &= ~PS_INLINE; 1027 } 1028 1029 /* If we have a `last' char that wasn't printed yet, print it now. */ 1030 static void 1031 ps_plast(struct termp *p) 1032 { 1033 size_t wx; 1034 1035 if (p->ps->last == '\0') 1036 return; 1037 1038 /* Check the font mode; open a new scope if it doesn't match. */ 1039 1040 if (p->ps->nextf != p->ps->lastf) { 1041 ps_pclose(p); 1042 ps_setfont(p, p->ps->nextf); 1043 } 1044 p->ps->nextf = TERMFONT_NONE; 1045 1046 /* 1047 * For an overstrike, if a previous character 1048 * was wider, advance to center the new one. 1049 */ 1050 1051 if (p->ps->pscolnext) { 1052 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; 1053 if (p->ps->pscol + wx < p->ps->pscolnext) 1054 p->ps->pscol = (p->ps->pscol + 1055 p->ps->pscolnext - wx) / 2; 1056 } 1057 1058 ps_pletter(p, p->ps->last); 1059 p->ps->last = '\0'; 1060 1061 /* 1062 * For an overstrike, if a previous character 1063 * was wider, advance to the end of the old one. 1064 */ 1065 1066 if (p->ps->pscol < p->ps->pscolnext) { 1067 ps_pclose(p); 1068 p->ps->pscol = p->ps->pscolnext; 1069 } 1070 } 1071 1072 static void 1073 ps_letter(struct termp *p, int arg) 1074 { 1075 size_t savecol; 1076 char c; 1077 1078 c = arg >= 128 || arg <= 0 ? '?' : arg; 1079 1080 /* 1081 * When receiving a backspace, merely flag it. 1082 * We don't know yet whether it is 1083 * a font instruction or an overstrike. 1084 */ 1085 1086 if (c == '\b') { 1087 assert(p->ps->last != '\0'); 1088 assert( ! (p->ps->flags & PS_BACKSP)); 1089 p->ps->flags |= PS_BACKSP; 1090 return; 1091 } 1092 1093 /* 1094 * Decode font instructions. 1095 */ 1096 1097 if (p->ps->flags & PS_BACKSP) { 1098 if (p->ps->last == '_') { 1099 switch (p->ps->nextf) { 1100 case TERMFONT_BI: 1101 break; 1102 case TERMFONT_BOLD: 1103 p->ps->nextf = TERMFONT_BI; 1104 break; 1105 default: 1106 p->ps->nextf = TERMFONT_UNDER; 1107 } 1108 p->ps->last = c; 1109 p->ps->flags &= ~PS_BACKSP; 1110 return; 1111 } 1112 if (p->ps->last == c) { 1113 switch (p->ps->nextf) { 1114 case TERMFONT_BI: 1115 break; 1116 case TERMFONT_UNDER: 1117 p->ps->nextf = TERMFONT_BI; 1118 break; 1119 default: 1120 p->ps->nextf = TERMFONT_BOLD; 1121 } 1122 p->ps->flags &= ~PS_BACKSP; 1123 return; 1124 } 1125 1126 /* 1127 * This is not a font instruction, but rather 1128 * the next character. Prepare for overstrike. 1129 */ 1130 1131 savecol = p->ps->pscol; 1132 } else 1133 savecol = SIZE_MAX; 1134 1135 /* 1136 * We found the next character, so the font instructions 1137 * for the previous one are complete. 1138 * Use them and print it. 1139 */ 1140 1141 ps_plast(p); 1142 1143 /* 1144 * Do not print the current character yet because font 1145 * instructions might follow; only remember the character. 1146 * It will get printed later from ps_plast(). 1147 */ 1148 1149 p->ps->last = c; 1150 1151 /* 1152 * For an overstrike, back up to the previous position. 1153 * If the previous character is wider than any it overstrikes, 1154 * remember the current position, because it might also be 1155 * wider than all that will overstrike it. 1156 */ 1157 1158 if (savecol != SIZE_MAX) { 1159 if (p->ps->pscolnext < p->ps->pscol) 1160 p->ps->pscolnext = p->ps->pscol; 1161 ps_pclose(p); 1162 p->ps->pscol = savecol; 1163 p->ps->flags &= ~PS_BACKSP; 1164 } else 1165 p->ps->pscolnext = 0; 1166 } 1167 1168 static void 1169 ps_advance(struct termp *p, size_t len) 1170 { 1171 1172 /* 1173 * Advance some spaces. This can probably be made smarter, 1174 * i.e., to have multiple space-separated words in the same 1175 * scope, but this is easier: just close out the current scope 1176 * and readjust our column settings. 1177 */ 1178 1179 ps_plast(p); 1180 ps_pclose(p); 1181 p->ps->pscol += len; 1182 } 1183 1184 static void 1185 ps_endline(struct termp *p) 1186 { 1187 1188 /* Close out any scopes we have open: we're at eoln. */ 1189 1190 ps_plast(p); 1191 ps_pclose(p); 1192 1193 /* 1194 * If we're in the margin, don't try to recalculate our current 1195 * row. XXX: if the column tries to be fancy with multiple 1196 * lines, we'll do nasty stuff. 1197 */ 1198 1199 if (PS_MARGINS & p->ps->flags) 1200 return; 1201 1202 /* Left-justify. */ 1203 1204 p->ps->pscol = p->ps->left; 1205 1206 /* If we haven't printed anything, return. */ 1207 1208 if (PS_NEWPAGE & p->ps->flags) 1209 return; 1210 1211 /* 1212 * Put us down a line. If we're at the page bottom, spit out a 1213 * showpage and restart our row. 1214 */ 1215 1216 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1217 p->ps->psrow -= p->ps->lineheight; 1218 return; 1219 } 1220 1221 ps_closepage(p); 1222 } 1223 1224 static void 1225 ps_setfont(struct termp *p, enum termfont f) 1226 { 1227 1228 assert(f < TERMFONT__MAX); 1229 p->ps->lastf = f; 1230 1231 /* 1232 * If we're still at the top of the page, let the font-setting 1233 * be delayed until we actually have stuff to print. 1234 */ 1235 1236 if (PS_NEWPAGE & p->ps->flags) 1237 return; 1238 1239 if (TERMTYPE_PS == p->type) 1240 ps_printf(p, "/%s %zu selectfont\n", 1241 fonts[(int)f].name, p->ps->scale); 1242 else 1243 ps_printf(p, "/F%d %zu Tf\n", 1244 (int)f, p->ps->scale); 1245 } 1246 1247 static size_t 1248 ps_width(const struct termp *p, int c) 1249 { 1250 1251 if (c <= 32 || c - 32 >= MAXCHAR) 1252 c = 0; 1253 else 1254 c -= 32; 1255 1256 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx; 1257 } 1258 1259 static int 1260 ps_hspan(const struct termp *p, const struct roffsu *su) 1261 { 1262 double r; 1263 1264 /* 1265 * All of these measurements are derived by converting from the 1266 * native measurement to AFM units. 1267 */ 1268 switch (su->unit) { 1269 case SCALE_BU: 1270 /* 1271 * Traditionally, the default unit is fixed to the 1272 * output media. So this would refer to the point. In 1273 * mandoc(1), however, we stick to the default terminal 1274 * scaling unit so that output is the same regardless 1275 * the media. 1276 */ 1277 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1278 break; 1279 case SCALE_CM: 1280 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1281 break; 1282 case SCALE_EM: 1283 r = su->scale * 1284 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1285 break; 1286 case SCALE_EN: 1287 r = su->scale * 1288 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1289 break; 1290 case SCALE_IN: 1291 r = PNT2AFM(p, su->scale * 72.0); 1292 break; 1293 case SCALE_MM: 1294 r = su->scale * 1295 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1296 break; 1297 case SCALE_PC: 1298 r = PNT2AFM(p, su->scale * 12.0); 1299 break; 1300 case SCALE_PT: 1301 r = PNT2AFM(p, su->scale * 1.0); 1302 break; 1303 case SCALE_VS: 1304 r = su->scale * p->ps->lineheight; 1305 break; 1306 default: 1307 r = su->scale; 1308 break; 1309 } 1310 1311 return r * 24.0; 1312 } 1313 1314 static void 1315 ps_growbuf(struct termp *p, size_t sz) 1316 { 1317 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1318 return; 1319 1320 if (sz < PS_BUFSLOP) 1321 sz = PS_BUFSLOP; 1322 1323 p->ps->psmargsz += sz; 1324 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1325 } 1326