1 /* $Id: term_ps.c,v 1.85 2017/06/07 17:38:26 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2014, 2015, 2016, 2017 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(*p)); 542 p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol)); 543 p->maxtcol = 1; 544 545 p->enc = TERMENC_ASCII; 546 p->fontq = mandoc_reallocarray(NULL, 547 (p->fontsz = 8), sizeof(*p->fontq)); 548 p->fontq[0] = p->fontl = TERMFONT_NONE; 549 p->ps = mandoc_calloc(1, sizeof(*p->ps)); 550 551 p->advance = ps_advance; 552 p->begin = ps_begin; 553 p->end = ps_end; 554 p->endline = ps_endline; 555 p->hspan = ps_hspan; 556 p->letter = ps_letter; 557 p->setwidth = ps_setwidth; 558 p->width = ps_width; 559 560 /* Default to US letter (millimetres). */ 561 562 pagex = 216; 563 pagey = 279; 564 565 /* 566 * The ISO-269 paper sizes can be calculated automatically, but 567 * it would require bringing in -lm for pow() and I'd rather not 568 * do that. So just do it the easy way for now. Since this 569 * only happens once, I'm not terribly concerned. 570 */ 571 572 pp = outopts->paper; 573 if (pp && strcasecmp(pp, "letter")) { 574 if (0 == strcasecmp(pp, "a3")) { 575 pagex = 297; 576 pagey = 420; 577 } else if (0 == strcasecmp(pp, "a4")) { 578 pagex = 210; 579 pagey = 297; 580 } else if (0 == strcasecmp(pp, "a5")) { 581 pagex = 148; 582 pagey = 210; 583 } else if (0 == strcasecmp(pp, "legal")) { 584 pagex = 216; 585 pagey = 356; 586 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 587 warnx("%s: Unknown paper", pp); 588 } 589 590 /* 591 * This MUST be defined before any PNT2AFM or AFM2PNT 592 * calculations occur. 593 */ 594 595 p->ps->scale = 11; 596 597 /* Remember millimetres -> AFM units. */ 598 599 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 600 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 601 602 /* Margins are 1/9 the page x and y. */ 603 604 marginx = (size_t)((double)pagex / 9.0); 605 marginy = (size_t)((double)pagey / 9.0); 606 607 /* Line-height is 1.4em. */ 608 609 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 610 611 p->ps->width = p->ps->lastwidth = (size_t)pagex; 612 p->ps->height = (size_t)pagey; 613 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 614 p->ps->top = pagey - marginy; 615 p->ps->footer = (marginy / 2) - (lineheight / 2); 616 p->ps->bottom = marginy; 617 p->ps->left = marginx; 618 p->ps->lineheight = lineheight; 619 620 p->defrmargin = pagex - (marginx * 2); 621 return p; 622 } 623 624 static void 625 ps_setwidth(struct termp *p, int iop, int width) 626 { 627 size_t lastwidth; 628 629 lastwidth = p->ps->width; 630 if (iop > 0) 631 p->ps->width += width; 632 else if (iop == 0) 633 p->ps->width = width ? (size_t)width : p->ps->lastwidth; 634 else if (p->ps->width > (size_t)width) 635 p->ps->width -= width; 636 else 637 p->ps->width = 0; 638 p->ps->lastwidth = lastwidth; 639 } 640 641 void 642 pspdf_free(void *arg) 643 { 644 struct termp *p; 645 646 p = (struct termp *)arg; 647 648 free(p->ps->psmarg); 649 free(p->ps->pdfobjs); 650 651 free(p->ps); 652 term_free(p); 653 } 654 655 static void 656 ps_printf(struct termp *p, const char *fmt, ...) 657 { 658 va_list ap; 659 int pos, len; 660 661 va_start(ap, fmt); 662 663 /* 664 * If we're running in regular mode, then pipe directly into 665 * vprintf(). If we're processing margins, then push the data 666 * into our growable margin buffer. 667 */ 668 669 if ( ! (PS_MARGINS & p->ps->flags)) { 670 len = vprintf(fmt, ap); 671 va_end(ap); 672 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 673 return; 674 } 675 676 /* 677 * XXX: I assume that the in-margin print won't exceed 678 * PS_BUFSLOP (128 bytes), which is reasonable but still an 679 * assumption that will cause pukeage if it's not the case. 680 */ 681 682 ps_growbuf(p, PS_BUFSLOP); 683 684 pos = (int)p->ps->psmargcur; 685 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 686 687 va_end(ap); 688 689 p->ps->psmargcur = strlen(p->ps->psmarg); 690 } 691 692 static void 693 ps_putchar(struct termp *p, char c) 694 { 695 int pos; 696 697 /* See ps_printf(). */ 698 699 if ( ! (PS_MARGINS & p->ps->flags)) { 700 putchar(c); 701 p->ps->pdfbytes++; 702 return; 703 } 704 705 ps_growbuf(p, 2); 706 707 pos = (int)p->ps->psmargcur++; 708 p->ps->psmarg[pos++] = c; 709 p->ps->psmarg[pos] = '\0'; 710 } 711 712 static void 713 pdf_obj(struct termp *p, size_t obj) 714 { 715 716 assert(obj > 0); 717 718 if ((obj - 1) >= p->ps->pdfobjsz) { 719 p->ps->pdfobjsz = obj + 128; 720 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 721 p->ps->pdfobjsz, sizeof(size_t)); 722 } 723 724 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 725 ps_printf(p, "%zu 0 obj\n", obj); 726 } 727 728 static void 729 ps_closepage(struct termp *p) 730 { 731 int i; 732 size_t len, base; 733 734 /* 735 * Close out a page that we've already flushed to output. In 736 * PostScript, we simply note that the page must be showed. In 737 * PDF, we must now create the Length, Resource, and Page node 738 * for the page contents. 739 */ 740 741 assert(p->ps->psmarg && p->ps->psmarg[0]); 742 ps_printf(p, "%s", p->ps->psmarg); 743 744 if (TERMTYPE_PS != p->type) { 745 ps_printf(p, "ET\n"); 746 747 len = p->ps->pdfbytes - p->ps->pdflastpg; 748 base = p->ps->pages * 4 + p->ps->pdfbody; 749 750 ps_printf(p, "endstream\nendobj\n"); 751 752 /* Length of content. */ 753 pdf_obj(p, base + 1); 754 ps_printf(p, "%zu\nendobj\n", len); 755 756 /* Resource for content. */ 757 pdf_obj(p, base + 2); 758 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 759 ps_printf(p, "/Font <<\n"); 760 for (i = 0; i < (int)TERMFONT__MAX; i++) 761 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 762 ps_printf(p, ">>\n>>\n"); 763 764 /* Page node. */ 765 pdf_obj(p, base + 3); 766 ps_printf(p, "<<\n"); 767 ps_printf(p, "/Type /Page\n"); 768 ps_printf(p, "/Parent 2 0 R\n"); 769 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 770 ps_printf(p, "/Contents %zu 0 R\n", base); 771 ps_printf(p, ">>\nendobj\n"); 772 } else 773 ps_printf(p, "showpage\n"); 774 775 p->ps->pages++; 776 p->ps->psrow = p->ps->top; 777 assert( ! (PS_NEWPAGE & p->ps->flags)); 778 p->ps->flags |= PS_NEWPAGE; 779 } 780 781 static void 782 ps_end(struct termp *p) 783 { 784 size_t i, xref, base; 785 786 ps_plast(p); 787 ps_pclose(p); 788 789 /* 790 * At the end of the file, do one last showpage. This is the 791 * same behaviour as groff(1) and works for multiple pages as 792 * well as just one. 793 */ 794 795 if ( ! (PS_NEWPAGE & p->ps->flags)) { 796 assert(0 == p->ps->flags); 797 assert('\0' == p->ps->last); 798 ps_closepage(p); 799 } 800 801 if (TERMTYPE_PS == p->type) { 802 ps_printf(p, "%%%%Trailer\n"); 803 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 804 ps_printf(p, "%%%%EOF\n"); 805 return; 806 } 807 808 pdf_obj(p, 2); 809 ps_printf(p, "<<\n/Type /Pages\n"); 810 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 811 (size_t)AFM2PNT(p, p->ps->width), 812 (size_t)AFM2PNT(p, p->ps->height)); 813 814 ps_printf(p, "/Count %zu\n", p->ps->pages); 815 ps_printf(p, "/Kids ["); 816 817 for (i = 0; i < p->ps->pages; i++) 818 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 819 820 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 821 822 ps_printf(p, "]\n>>\nendobj\n"); 823 pdf_obj(p, base); 824 ps_printf(p, "<<\n"); 825 ps_printf(p, "/Type /Catalog\n"); 826 ps_printf(p, "/Pages 2 0 R\n"); 827 ps_printf(p, ">>\n"); 828 xref = p->ps->pdfbytes; 829 ps_printf(p, "xref\n"); 830 ps_printf(p, "0 %zu\n", base + 1); 831 ps_printf(p, "0000000000 65535 f \n"); 832 833 for (i = 0; i < base; i++) 834 ps_printf(p, "%.10zu 00000 n \n", 835 p->ps->pdfobjs[(int)i]); 836 837 ps_printf(p, "trailer\n"); 838 ps_printf(p, "<<\n"); 839 ps_printf(p, "/Size %zu\n", base + 1); 840 ps_printf(p, "/Root %zu 0 R\n", base); 841 ps_printf(p, "/Info 1 0 R\n"); 842 ps_printf(p, ">>\n"); 843 ps_printf(p, "startxref\n"); 844 ps_printf(p, "%zu\n", xref); 845 ps_printf(p, "%%%%EOF\n"); 846 } 847 848 static void 849 ps_begin(struct termp *p) 850 { 851 int i; 852 853 /* 854 * Print margins into margin buffer. Nothing gets output to the 855 * screen yet, so we don't need to initialise the primary state. 856 */ 857 858 if (p->ps->psmarg) { 859 assert(p->ps->psmargsz); 860 p->ps->psmarg[0] = '\0'; 861 } 862 863 /*p->ps->pdfbytes = 0;*/ 864 p->ps->psmargcur = 0; 865 p->ps->flags = PS_MARGINS; 866 p->ps->pscol = p->ps->left; 867 p->ps->psrow = p->ps->header; 868 869 ps_setfont(p, TERMFONT_NONE); 870 871 (*p->headf)(p, p->argf); 872 (*p->endline)(p); 873 874 p->ps->pscol = p->ps->left; 875 p->ps->psrow = p->ps->footer; 876 877 (*p->footf)(p, p->argf); 878 (*p->endline)(p); 879 880 p->ps->flags &= ~PS_MARGINS; 881 882 assert(0 == p->ps->flags); 883 assert(p->ps->psmarg); 884 assert('\0' != p->ps->psmarg[0]); 885 886 /* 887 * Print header and initialise page state. Following this, 888 * stuff gets printed to the screen, so make sure we're sane. 889 */ 890 891 if (TERMTYPE_PS == p->type) { 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: " 898 "Default %zu %zu 0 () ()\n", 899 (size_t)AFM2PNT(p, p->ps->width), 900 (size_t)AFM2PNT(p, p->ps->height)); 901 ps_printf(p, "%%%%DocumentNeededResources: font"); 902 903 for (i = 0; i < (int)TERMFONT__MAX; i++) 904 ps_printf(p, " %s", fonts[i].name); 905 906 ps_printf(p, "\n%%%%EndComments\n"); 907 } else { 908 ps_printf(p, "%%PDF-1.1\n"); 909 pdf_obj(p, 1); 910 ps_printf(p, "<<\n"); 911 ps_printf(p, ">>\n"); 912 ps_printf(p, "endobj\n"); 913 914 for (i = 0; i < (int)TERMFONT__MAX; i++) { 915 pdf_obj(p, (size_t)i + 3); 916 ps_printf(p, "<<\n"); 917 ps_printf(p, "/Type /Font\n"); 918 ps_printf(p, "/Subtype /Type1\n"); 919 ps_printf(p, "/Name /F%d\n", i); 920 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 921 ps_printf(p, ">>\n"); 922 } 923 } 924 925 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 926 p->ps->pscol = p->ps->left; 927 p->ps->psrow = p->ps->top; 928 p->ps->flags |= PS_NEWPAGE; 929 ps_setfont(p, TERMFONT_NONE); 930 } 931 932 static void 933 ps_pletter(struct termp *p, int c) 934 { 935 int f; 936 937 /* 938 * If we haven't opened a page context, then output that we're 939 * in a new page and make sure the font is correctly set. 940 */ 941 942 if (PS_NEWPAGE & p->ps->flags) { 943 if (TERMTYPE_PS == p->type) { 944 ps_printf(p, "%%%%Page: %zu %zu\n", 945 p->ps->pages + 1, p->ps->pages + 1); 946 ps_printf(p, "/%s %zu selectfont\n", 947 fonts[(int)p->ps->lastf].name, 948 p->ps->scale); 949 } else { 950 pdf_obj(p, p->ps->pdfbody + 951 p->ps->pages * 4); 952 ps_printf(p, "<<\n"); 953 ps_printf(p, "/Length %zu 0 R\n", 954 p->ps->pdfbody + 1 + p->ps->pages * 4); 955 ps_printf(p, ">>\nstream\n"); 956 } 957 p->ps->pdflastpg = p->ps->pdfbytes; 958 p->ps->flags &= ~PS_NEWPAGE; 959 } 960 961 /* 962 * If we're not in a PostScript "word" context, then open one 963 * now at the current cursor. 964 */ 965 966 if ( ! (PS_INLINE & p->ps->flags)) { 967 if (TERMTYPE_PS != p->type) { 968 ps_printf(p, "BT\n/F%d %zu Tf\n", 969 (int)p->ps->lastf, p->ps->scale); 970 ps_printf(p, "%.3f %.3f Td\n(", 971 AFM2PNT(p, p->ps->pscol), 972 AFM2PNT(p, p->ps->psrow)); 973 } else 974 ps_printf(p, "%.3f %.3f moveto\n(", 975 AFM2PNT(p, p->ps->pscol), 976 AFM2PNT(p, p->ps->psrow)); 977 p->ps->flags |= PS_INLINE; 978 } 979 980 assert( ! (PS_NEWPAGE & p->ps->flags)); 981 982 /* 983 * We need to escape these characters as per the PostScript 984 * specification. We would also escape non-graphable characters 985 * (like tabs), but none of them would get to this point and 986 * it's superfluous to abort() on them. 987 */ 988 989 switch (c) { 990 case '(': 991 case ')': 992 case '\\': 993 ps_putchar(p, '\\'); 994 break; 995 default: 996 break; 997 } 998 999 /* Write the character and adjust where we are on the page. */ 1000 1001 f = (int)p->ps->lastf; 1002 1003 if (c <= 32 || c - 32 >= MAXCHAR) 1004 c = 32; 1005 1006 ps_putchar(p, (char)c); 1007 c -= 32; 1008 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 1009 } 1010 1011 static void 1012 ps_pclose(struct termp *p) 1013 { 1014 1015 /* 1016 * Spit out that we're exiting a word context (this is a 1017 * "partial close" because we don't check the last-char buffer 1018 * or anything). 1019 */ 1020 1021 if ( ! (PS_INLINE & p->ps->flags)) 1022 return; 1023 1024 if (TERMTYPE_PS != p->type) { 1025 ps_printf(p, ") Tj\nET\n"); 1026 } else 1027 ps_printf(p, ") show\n"); 1028 1029 p->ps->flags &= ~PS_INLINE; 1030 } 1031 1032 /* If we have a `last' char that wasn't printed yet, print it now. */ 1033 static void 1034 ps_plast(struct termp *p) 1035 { 1036 size_t wx; 1037 1038 if (p->ps->last == '\0') 1039 return; 1040 1041 /* Check the font mode; open a new scope if it doesn't match. */ 1042 1043 if (p->ps->nextf != p->ps->lastf) { 1044 ps_pclose(p); 1045 ps_setfont(p, p->ps->nextf); 1046 } 1047 p->ps->nextf = TERMFONT_NONE; 1048 1049 /* 1050 * For an overstrike, if a previous character 1051 * was wider, advance to center the new one. 1052 */ 1053 1054 if (p->ps->pscolnext) { 1055 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; 1056 if (p->ps->pscol + wx < p->ps->pscolnext) 1057 p->ps->pscol = (p->ps->pscol + 1058 p->ps->pscolnext - wx) / 2; 1059 } 1060 1061 ps_pletter(p, p->ps->last); 1062 p->ps->last = '\0'; 1063 1064 /* 1065 * For an overstrike, if a previous character 1066 * was wider, advance to the end of the old one. 1067 */ 1068 1069 if (p->ps->pscol < p->ps->pscolnext) { 1070 ps_pclose(p); 1071 p->ps->pscol = p->ps->pscolnext; 1072 } 1073 } 1074 1075 static void 1076 ps_letter(struct termp *p, int arg) 1077 { 1078 size_t savecol; 1079 char c; 1080 1081 c = arg >= 128 || arg <= 0 ? '?' : arg; 1082 1083 /* 1084 * When receiving a backspace, merely flag it. 1085 * We don't know yet whether it is 1086 * a font instruction or an overstrike. 1087 */ 1088 1089 if (c == '\b') { 1090 assert(p->ps->last != '\0'); 1091 assert( ! (p->ps->flags & PS_BACKSP)); 1092 p->ps->flags |= PS_BACKSP; 1093 return; 1094 } 1095 1096 /* 1097 * Decode font instructions. 1098 */ 1099 1100 if (p->ps->flags & PS_BACKSP) { 1101 if (p->ps->last == '_') { 1102 switch (p->ps->nextf) { 1103 case TERMFONT_BI: 1104 break; 1105 case TERMFONT_BOLD: 1106 p->ps->nextf = TERMFONT_BI; 1107 break; 1108 default: 1109 p->ps->nextf = TERMFONT_UNDER; 1110 } 1111 p->ps->last = c; 1112 p->ps->flags &= ~PS_BACKSP; 1113 return; 1114 } 1115 if (p->ps->last == c) { 1116 switch (p->ps->nextf) { 1117 case TERMFONT_BI: 1118 break; 1119 case TERMFONT_UNDER: 1120 p->ps->nextf = TERMFONT_BI; 1121 break; 1122 default: 1123 p->ps->nextf = TERMFONT_BOLD; 1124 } 1125 p->ps->flags &= ~PS_BACKSP; 1126 return; 1127 } 1128 1129 /* 1130 * This is not a font instruction, but rather 1131 * the next character. Prepare for overstrike. 1132 */ 1133 1134 savecol = p->ps->pscol; 1135 } else 1136 savecol = SIZE_MAX; 1137 1138 /* 1139 * We found the next character, so the font instructions 1140 * for the previous one are complete. 1141 * Use them and print it. 1142 */ 1143 1144 ps_plast(p); 1145 1146 /* 1147 * Do not print the current character yet because font 1148 * instructions might follow; only remember the character. 1149 * It will get printed later from ps_plast(). 1150 */ 1151 1152 p->ps->last = c; 1153 1154 /* 1155 * For an overstrike, back up to the previous position. 1156 * If the previous character is wider than any it overstrikes, 1157 * remember the current position, because it might also be 1158 * wider than all that will overstrike it. 1159 */ 1160 1161 if (savecol != SIZE_MAX) { 1162 if (p->ps->pscolnext < p->ps->pscol) 1163 p->ps->pscolnext = p->ps->pscol; 1164 ps_pclose(p); 1165 p->ps->pscol = savecol; 1166 p->ps->flags &= ~PS_BACKSP; 1167 } else 1168 p->ps->pscolnext = 0; 1169 } 1170 1171 static void 1172 ps_advance(struct termp *p, size_t len) 1173 { 1174 1175 /* 1176 * Advance some spaces. This can probably be made smarter, 1177 * i.e., to have multiple space-separated words in the same 1178 * scope, but this is easier: just close out the current scope 1179 * and readjust our column settings. 1180 */ 1181 1182 ps_plast(p); 1183 ps_pclose(p); 1184 p->ps->pscol += len; 1185 } 1186 1187 static void 1188 ps_endline(struct termp *p) 1189 { 1190 1191 /* Close out any scopes we have open: we're at eoln. */ 1192 1193 ps_plast(p); 1194 ps_pclose(p); 1195 1196 /* 1197 * If we're in the margin, don't try to recalculate our current 1198 * row. XXX: if the column tries to be fancy with multiple 1199 * lines, we'll do nasty stuff. 1200 */ 1201 1202 if (PS_MARGINS & p->ps->flags) 1203 return; 1204 1205 /* Left-justify. */ 1206 1207 p->ps->pscol = p->ps->left; 1208 1209 /* If we haven't printed anything, return. */ 1210 1211 if (PS_NEWPAGE & p->ps->flags) 1212 return; 1213 1214 /* 1215 * Put us down a line. If we're at the page bottom, spit out a 1216 * showpage and restart our row. 1217 */ 1218 1219 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1220 p->ps->psrow -= p->ps->lineheight; 1221 return; 1222 } 1223 1224 ps_closepage(p); 1225 1226 p->tcol->offset -= p->ti; 1227 p->ti = 0; 1228 } 1229 1230 static void 1231 ps_setfont(struct termp *p, enum termfont f) 1232 { 1233 1234 assert(f < TERMFONT__MAX); 1235 p->ps->lastf = f; 1236 1237 /* 1238 * If we're still at the top of the page, let the font-setting 1239 * be delayed until we actually have stuff to print. 1240 */ 1241 1242 if (PS_NEWPAGE & p->ps->flags) 1243 return; 1244 1245 if (TERMTYPE_PS == p->type) 1246 ps_printf(p, "/%s %zu selectfont\n", 1247 fonts[(int)f].name, p->ps->scale); 1248 else 1249 ps_printf(p, "/F%d %zu Tf\n", 1250 (int)f, p->ps->scale); 1251 } 1252 1253 static size_t 1254 ps_width(const struct termp *p, int c) 1255 { 1256 1257 if (c <= 32 || c - 32 >= MAXCHAR) 1258 c = 0; 1259 else 1260 c -= 32; 1261 1262 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx; 1263 } 1264 1265 static int 1266 ps_hspan(const struct termp *p, const struct roffsu *su) 1267 { 1268 double r; 1269 1270 /* 1271 * All of these measurements are derived by converting from the 1272 * native measurement to AFM units. 1273 */ 1274 switch (su->unit) { 1275 case SCALE_BU: 1276 /* 1277 * Traditionally, the default unit is fixed to the 1278 * output media. So this would refer to the point. In 1279 * mandoc(1), however, we stick to the default terminal 1280 * scaling unit so that output is the same regardless 1281 * the media. 1282 */ 1283 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1284 break; 1285 case SCALE_CM: 1286 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1287 break; 1288 case SCALE_EM: 1289 r = su->scale * 1290 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1291 break; 1292 case SCALE_EN: 1293 r = su->scale * 1294 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1295 break; 1296 case SCALE_IN: 1297 r = PNT2AFM(p, su->scale * 72.0); 1298 break; 1299 case SCALE_MM: 1300 r = su->scale * 1301 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1302 break; 1303 case SCALE_PC: 1304 r = PNT2AFM(p, su->scale * 12.0); 1305 break; 1306 case SCALE_PT: 1307 r = PNT2AFM(p, su->scale * 1.0); 1308 break; 1309 case SCALE_VS: 1310 r = su->scale * p->ps->lineheight; 1311 break; 1312 default: 1313 r = su->scale; 1314 break; 1315 } 1316 1317 return r * 24.0; 1318 } 1319 1320 static void 1321 ps_growbuf(struct termp *p, size_t sz) 1322 { 1323 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1324 return; 1325 1326 if (sz < PS_BUFSLOP) 1327 sz = PS_BUFSLOP; 1328 1329 p->ps->psmargsz += sz; 1330 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1331 } 1332