1 /* $OpenBSD: term_ps.c,v 1.35 2014/12/01 08:05:02 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2014 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 AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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 <sys/types.h> 19 20 #include <assert.h> 21 #include <stdarg.h> 22 #include <stdint.h> 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <unistd.h> 27 28 #include "mandoc_aux.h" 29 #include "out.h" 30 #include "term.h" 31 #include "main.h" 32 33 /* These work the buffer used by the header and footer. */ 34 #define PS_BUFSLOP 128 35 36 /* Convert PostScript point "x" to an AFM unit. */ 37 #define PNT2AFM(p, x) \ 38 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 39 40 /* Convert an AFM unit "x" to a PostScript points */ 41 #define AFM2PNT(p, x) \ 42 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 43 44 struct glyph { 45 unsigned short wx; /* WX in AFM */ 46 }; 47 48 struct font { 49 const char *name; /* FontName in AFM */ 50 #define MAXCHAR 95 /* total characters we can handle */ 51 struct glyph gly[MAXCHAR]; /* glyph metrics */ 52 }; 53 54 struct termp_ps { 55 int flags; 56 #define PS_INLINE (1 << 0) /* we're in a word */ 57 #define PS_MARGINS (1 << 1) /* we're in the margins */ 58 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 59 #define PS_BACKSP (1 << 3) /* last character was backspace */ 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; /* last non-backspace seen */ 66 enum termfont lastf; /* last set font */ 67 enum termfont nextf; /* building next font here */ 68 size_t scale; /* font scaling factor */ 69 size_t pages; /* number of pages shown */ 70 size_t lineheight; /* line height (AFM units) */ 71 size_t top; /* body top (AFM units) */ 72 size_t bottom; /* body bottom (AFM units) */ 73 size_t height; /* page height (AFM units */ 74 size_t width; /* page width (AFM units) */ 75 size_t lastwidth; /* page width before last ll */ 76 size_t left; /* body left (AFM units) */ 77 size_t header; /* header pos (AFM units) */ 78 size_t footer; /* footer pos (AFM units) */ 79 size_t pdfbytes; /* current output byte */ 80 size_t pdflastpg; /* byte of last page mark */ 81 size_t pdfbody; /* start of body object */ 82 size_t *pdfobjs; /* table of object offsets */ 83 size_t pdfobjsz; /* size of pdfobjs */ 84 }; 85 86 static double ps_hspan(const struct termp *, 87 const struct roffsu *); 88 static size_t ps_width(const struct termp *, int); 89 static void ps_advance(struct termp *, size_t); 90 static void ps_begin(struct termp *); 91 static void ps_closepage(struct termp *); 92 static void ps_end(struct termp *); 93 static void ps_endline(struct termp *); 94 static void ps_fclose(struct termp *); 95 static void ps_growbuf(struct termp *, size_t); 96 static void ps_letter(struct termp *, int); 97 static void ps_pclose(struct termp *); 98 static void ps_pletter(struct termp *, int); 99 static void ps_printf(struct termp *, const char *, ...); 100 static void ps_putchar(struct termp *, char); 101 static void ps_setfont(struct termp *, enum termfont); 102 static void ps_setwidth(struct termp *, int, size_t); 103 static struct termp *pspdf_alloc(const struct mchars *, char *); 104 static void pdf_obj(struct termp *, size_t); 105 106 /* 107 * We define, for the time being, three fonts: bold, oblique/italic, and 108 * normal (roman). The following table hard-codes the font metrics for 109 * ASCII, i.e., 32--127. 110 */ 111 112 static const struct font fonts[TERMFONT__MAX] = { 113 { "Times-Roman", { 114 { 250 }, 115 { 333 }, 116 { 408 }, 117 { 500 }, 118 { 500 }, 119 { 833 }, 120 { 778 }, 121 { 333 }, 122 { 333 }, 123 { 333 }, 124 { 500 }, 125 { 564 }, 126 { 250 }, 127 { 333 }, 128 { 250 }, 129 { 278 }, 130 { 500 }, 131 { 500 }, 132 { 500 }, 133 { 500 }, 134 { 500 }, 135 { 500 }, 136 { 500 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 278 }, 141 { 278 }, 142 { 564 }, 143 { 564 }, 144 { 564 }, 145 { 444 }, 146 { 921 }, 147 { 722 }, 148 { 667 }, 149 { 667 }, 150 { 722 }, 151 { 611 }, 152 { 556 }, 153 { 722 }, 154 { 722 }, 155 { 333 }, 156 { 389 }, 157 { 722 }, 158 { 611 }, 159 { 889 }, 160 { 722 }, 161 { 722 }, 162 { 556 }, 163 { 722 }, 164 { 667 }, 165 { 556 }, 166 { 611 }, 167 { 722 }, 168 { 722 }, 169 { 944 }, 170 { 722 }, 171 { 722 }, 172 { 611 }, 173 { 333 }, 174 { 278 }, 175 { 333 }, 176 { 469 }, 177 { 500 }, 178 { 333 }, 179 { 444 }, 180 { 500 }, 181 { 444 }, 182 { 500}, 183 { 444}, 184 { 333}, 185 { 500}, 186 { 500}, 187 { 278}, 188 { 278}, 189 { 500}, 190 { 278}, 191 { 778}, 192 { 500}, 193 { 500}, 194 { 500}, 195 { 500}, 196 { 333}, 197 { 389}, 198 { 278}, 199 { 500}, 200 { 500}, 201 { 722}, 202 { 500}, 203 { 500}, 204 { 444}, 205 { 480}, 206 { 200}, 207 { 480}, 208 { 541}, 209 } }, 210 { "Times-Bold", { 211 { 250 }, 212 { 333 }, 213 { 555 }, 214 { 500 }, 215 { 500 }, 216 { 1000 }, 217 { 833 }, 218 { 333 }, 219 { 333 }, 220 { 333 }, 221 { 500 }, 222 { 570 }, 223 { 250 }, 224 { 333 }, 225 { 250 }, 226 { 278 }, 227 { 500 }, 228 { 500 }, 229 { 500 }, 230 { 500 }, 231 { 500 }, 232 { 500 }, 233 { 500 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 333 }, 238 { 333 }, 239 { 570 }, 240 { 570 }, 241 { 570 }, 242 { 500 }, 243 { 930 }, 244 { 722 }, 245 { 667 }, 246 { 722 }, 247 { 722 }, 248 { 667 }, 249 { 611 }, 250 { 778 }, 251 { 778 }, 252 { 389 }, 253 { 500 }, 254 { 778 }, 255 { 667 }, 256 { 944 }, 257 { 722 }, 258 { 778 }, 259 { 611 }, 260 { 778 }, 261 { 722 }, 262 { 556 }, 263 { 667 }, 264 { 722 }, 265 { 722 }, 266 { 1000 }, 267 { 722 }, 268 { 722 }, 269 { 667 }, 270 { 333 }, 271 { 278 }, 272 { 333 }, 273 { 581 }, 274 { 500 }, 275 { 333 }, 276 { 500 }, 277 { 556 }, 278 { 444 }, 279 { 556 }, 280 { 444 }, 281 { 333 }, 282 { 500 }, 283 { 556 }, 284 { 278 }, 285 { 333 }, 286 { 556 }, 287 { 278 }, 288 { 833 }, 289 { 556 }, 290 { 500 }, 291 { 556 }, 292 { 556 }, 293 { 444 }, 294 { 389 }, 295 { 333 }, 296 { 556 }, 297 { 500 }, 298 { 722 }, 299 { 500 }, 300 { 500 }, 301 { 444 }, 302 { 394 }, 303 { 220 }, 304 { 394 }, 305 { 520 }, 306 } }, 307 { "Times-Italic", { 308 { 250 }, 309 { 333 }, 310 { 420 }, 311 { 500 }, 312 { 500 }, 313 { 833 }, 314 { 778 }, 315 { 333 }, 316 { 333 }, 317 { 333 }, 318 { 500 }, 319 { 675 }, 320 { 250 }, 321 { 333 }, 322 { 250 }, 323 { 278 }, 324 { 500 }, 325 { 500 }, 326 { 500 }, 327 { 500 }, 328 { 500 }, 329 { 500 }, 330 { 500 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 333 }, 335 { 333 }, 336 { 675 }, 337 { 675 }, 338 { 675 }, 339 { 500 }, 340 { 920 }, 341 { 611 }, 342 { 611 }, 343 { 667 }, 344 { 722 }, 345 { 611 }, 346 { 611 }, 347 { 722 }, 348 { 722 }, 349 { 333 }, 350 { 444 }, 351 { 667 }, 352 { 556 }, 353 { 833 }, 354 { 667 }, 355 { 722 }, 356 { 611 }, 357 { 722 }, 358 { 611 }, 359 { 500 }, 360 { 556 }, 361 { 722 }, 362 { 611 }, 363 { 833 }, 364 { 611 }, 365 { 556 }, 366 { 556 }, 367 { 389 }, 368 { 278 }, 369 { 389 }, 370 { 422 }, 371 { 500 }, 372 { 333 }, 373 { 500 }, 374 { 500 }, 375 { 444 }, 376 { 500 }, 377 { 444 }, 378 { 278 }, 379 { 500 }, 380 { 500 }, 381 { 278 }, 382 { 278 }, 383 { 444 }, 384 { 278 }, 385 { 722 }, 386 { 500 }, 387 { 500 }, 388 { 500 }, 389 { 500 }, 390 { 389 }, 391 { 389 }, 392 { 278 }, 393 { 500 }, 394 { 444 }, 395 { 667 }, 396 { 444 }, 397 { 444 }, 398 { 389 }, 399 { 400 }, 400 { 275 }, 401 { 400 }, 402 { 541 }, 403 } }, 404 { "Times-BoldItalic", { 405 { 250 }, 406 { 389 }, 407 { 555 }, 408 { 500 }, 409 { 500 }, 410 { 833 }, 411 { 778 }, 412 { 333 }, 413 { 333 }, 414 { 333 }, 415 { 500 }, 416 { 570 }, 417 { 250 }, 418 { 333 }, 419 { 250 }, 420 { 278 }, 421 { 500 }, 422 { 500 }, 423 { 500 }, 424 { 500 }, 425 { 500 }, 426 { 500 }, 427 { 500 }, 428 { 500 }, 429 { 500 }, 430 { 500 }, 431 { 333 }, 432 { 333 }, 433 { 570 }, 434 { 570 }, 435 { 570 }, 436 { 500 }, 437 { 832 }, 438 { 667 }, 439 { 667 }, 440 { 667 }, 441 { 722 }, 442 { 667 }, 443 { 667 }, 444 { 722 }, 445 { 778 }, 446 { 389 }, 447 { 500 }, 448 { 667 }, 449 { 611 }, 450 { 889 }, 451 { 722 }, 452 { 722 }, 453 { 611 }, 454 { 722 }, 455 { 667 }, 456 { 556 }, 457 { 611 }, 458 { 722 }, 459 { 667 }, 460 { 889 }, 461 { 667 }, 462 { 611 }, 463 { 611 }, 464 { 333 }, 465 { 278 }, 466 { 333 }, 467 { 570 }, 468 { 500 }, 469 { 333 }, 470 { 500 }, 471 { 500 }, 472 { 444 }, 473 { 500 }, 474 { 444 }, 475 { 333 }, 476 { 500 }, 477 { 556 }, 478 { 278 }, 479 { 278 }, 480 { 500 }, 481 { 278 }, 482 { 778 }, 483 { 556 }, 484 { 500 }, 485 { 500 }, 486 { 500 }, 487 { 389 }, 488 { 389 }, 489 { 278 }, 490 { 556 }, 491 { 444 }, 492 { 667 }, 493 { 500 }, 494 { 444 }, 495 { 389 }, 496 { 348 }, 497 { 220 }, 498 { 348 }, 499 { 570 }, 500 } }, 501 }; 502 503 void * 504 pdf_alloc(const struct mchars *mchars, char *outopts) 505 { 506 struct termp *p; 507 508 if (NULL != (p = pspdf_alloc(mchars, outopts))) 509 p->type = TERMTYPE_PDF; 510 511 return(p); 512 } 513 514 void * 515 ps_alloc(const struct mchars *mchars, char *outopts) 516 { 517 struct termp *p; 518 519 if (NULL != (p = pspdf_alloc(mchars, outopts))) 520 p->type = TERMTYPE_PS; 521 522 return(p); 523 } 524 525 static struct termp * 526 pspdf_alloc(const struct mchars *mchars, char *outopts) 527 { 528 struct termp *p; 529 unsigned int pagex, pagey; 530 size_t marginx, marginy, lineheight; 531 const char *toks[2]; 532 const char *pp; 533 char *v; 534 535 p = mandoc_calloc(1, sizeof(struct termp)); 536 p->symtab = mchars; 537 p->enc = TERMENC_ASCII; 538 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 539 540 p->advance = ps_advance; 541 p->begin = ps_begin; 542 p->end = ps_end; 543 p->endline = ps_endline; 544 p->hspan = ps_hspan; 545 p->letter = ps_letter; 546 p->setwidth = ps_setwidth; 547 p->width = ps_width; 548 549 toks[0] = "paper"; 550 toks[1] = NULL; 551 552 pp = NULL; 553 554 while (outopts && *outopts) 555 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 556 case 0: 557 pp = v; 558 break; 559 default: 560 break; 561 } 562 563 /* Default to US letter (millimetres). */ 564 565 pagex = 216; 566 pagey = 279; 567 568 /* 569 * The ISO-269 paper sizes can be calculated automatically, but 570 * it would require bringing in -lm for pow() and I'd rather not 571 * do that. So just do it the easy way for now. Since this 572 * only happens once, I'm not terribly concerned. 573 */ 574 575 if (pp && strcasecmp(pp, "letter")) { 576 if (0 == strcasecmp(pp, "a3")) { 577 pagex = 297; 578 pagey = 420; 579 } else if (0 == strcasecmp(pp, "a4")) { 580 pagex = 210; 581 pagey = 297; 582 } else if (0 == strcasecmp(pp, "a5")) { 583 pagex = 148; 584 pagey = 210; 585 } else if (0 == strcasecmp(pp, "legal")) { 586 pagex = 216; 587 pagey = 356; 588 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 589 fprintf(stderr, "%s: Unknown paper\n", pp); 590 } 591 592 /* 593 * This MUST be defined before any PNT2AFM or AFM2PNT 594 * calculations occur. 595 */ 596 597 p->ps->scale = 11; 598 599 /* Remember millimetres -> AFM units. */ 600 601 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 602 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 603 604 /* Margins are 1/9 the page x and y. */ 605 606 marginx = (size_t)((double)pagex / 9.0); 607 marginy = (size_t)((double)pagey / 9.0); 608 609 /* Line-height is 1.4em. */ 610 611 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 612 613 p->ps->width = p->ps->lastwidth = (size_t)pagex; 614 p->ps->height = (size_t)pagey; 615 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 616 p->ps->top = pagey - marginy; 617 p->ps->footer = (marginy / 2) - (lineheight / 2); 618 p->ps->bottom = marginy; 619 p->ps->left = marginx; 620 p->ps->lineheight = lineheight; 621 622 p->defrmargin = pagex - (marginx * 2); 623 return(p); 624 } 625 626 static void 627 ps_setwidth(struct termp *p, int iop, size_t width) 628 { 629 size_t lastwidth; 630 631 lastwidth = p->ps->width; 632 if (iop > 0) 633 p->ps->width += width; 634 else if (iop == 0) 635 p->ps->width = width ? width : p->ps->lastwidth; 636 else if (p->ps->width > width) 637 p->ps->width -= width; 638 else 639 p->ps->width = 0; 640 p->ps->lastwidth = lastwidth; 641 } 642 643 void 644 pspdf_free(void *arg) 645 { 646 struct termp *p; 647 648 p = (struct termp *)arg; 649 650 if (p->ps->psmarg) 651 free(p->ps->psmarg); 652 if (p->ps->pdfobjs) 653 free(p->ps->pdfobjs); 654 655 free(p->ps); 656 term_free(p); 657 } 658 659 static void 660 ps_printf(struct termp *p, const char *fmt, ...) 661 { 662 va_list ap; 663 int pos, len; 664 665 va_start(ap, fmt); 666 667 /* 668 * If we're running in regular mode, then pipe directly into 669 * vprintf(). If we're processing margins, then push the data 670 * into our growable margin buffer. 671 */ 672 673 if ( ! (PS_MARGINS & p->ps->flags)) { 674 len = vprintf(fmt, ap); 675 va_end(ap); 676 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 677 return; 678 } 679 680 /* 681 * XXX: I assume that the in-margin print won't exceed 682 * PS_BUFSLOP (128 bytes), which is reasonable but still an 683 * assumption that will cause pukeage if it's not the case. 684 */ 685 686 ps_growbuf(p, PS_BUFSLOP); 687 688 pos = (int)p->ps->psmargcur; 689 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 690 691 va_end(ap); 692 693 p->ps->psmargcur = strlen(p->ps->psmarg); 694 } 695 696 static void 697 ps_putchar(struct termp *p, char c) 698 { 699 int pos; 700 701 /* See ps_printf(). */ 702 703 if ( ! (PS_MARGINS & p->ps->flags)) { 704 putchar(c); 705 p->ps->pdfbytes++; 706 return; 707 } 708 709 ps_growbuf(p, 2); 710 711 pos = (int)p->ps->psmargcur++; 712 p->ps->psmarg[pos++] = c; 713 p->ps->psmarg[pos] = '\0'; 714 } 715 716 static void 717 pdf_obj(struct termp *p, size_t obj) 718 { 719 720 assert(obj > 0); 721 722 if ((obj - 1) >= p->ps->pdfobjsz) { 723 p->ps->pdfobjsz = obj + 128; 724 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 725 p->ps->pdfobjsz, sizeof(size_t)); 726 } 727 728 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 729 ps_printf(p, "%zu 0 obj\n", obj); 730 } 731 732 static void 733 ps_closepage(struct termp *p) 734 { 735 int i; 736 size_t len, base; 737 738 /* 739 * Close out a page that we've already flushed to output. In 740 * PostScript, we simply note that the page must be showed. In 741 * PDF, we must now create the Length, Resource, and Page node 742 * for the page contents. 743 */ 744 745 assert(p->ps->psmarg && p->ps->psmarg[0]); 746 ps_printf(p, "%s", p->ps->psmarg); 747 748 if (TERMTYPE_PS != p->type) { 749 ps_printf(p, "ET\n"); 750 751 len = p->ps->pdfbytes - p->ps->pdflastpg; 752 base = p->ps->pages * 4 + p->ps->pdfbody; 753 754 ps_printf(p, "endstream\nendobj\n"); 755 756 /* Length of content. */ 757 pdf_obj(p, base + 1); 758 ps_printf(p, "%zu\nendobj\n", len); 759 760 /* Resource for content. */ 761 pdf_obj(p, base + 2); 762 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 763 ps_printf(p, "/Font <<\n"); 764 for (i = 0; i < (int)TERMFONT__MAX; i++) 765 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 766 ps_printf(p, ">>\n>>\n"); 767 768 /* Page node. */ 769 pdf_obj(p, base + 3); 770 ps_printf(p, "<<\n"); 771 ps_printf(p, "/Type /Page\n"); 772 ps_printf(p, "/Parent 2 0 R\n"); 773 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 774 ps_printf(p, "/Contents %zu 0 R\n", base); 775 ps_printf(p, ">>\nendobj\n"); 776 } else 777 ps_printf(p, "showpage\n"); 778 779 p->ps->pages++; 780 p->ps->psrow = p->ps->top; 781 assert( ! (PS_NEWPAGE & p->ps->flags)); 782 p->ps->flags |= PS_NEWPAGE; 783 } 784 785 static void 786 ps_end(struct termp *p) 787 { 788 size_t i, xref, base; 789 790 /* 791 * At the end of the file, do one last showpage. This is the 792 * same behaviour as groff(1) and works for multiple pages as 793 * well as just one. 794 */ 795 796 if ( ! (PS_NEWPAGE & p->ps->flags)) { 797 assert(0 == p->ps->flags); 798 assert('\0' == p->ps->last); 799 ps_closepage(p); 800 } 801 802 if (TERMTYPE_PS == p->type) { 803 ps_printf(p, "%%%%Trailer\n"); 804 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 805 ps_printf(p, "%%%%EOF\n"); 806 return; 807 } 808 809 pdf_obj(p, 2); 810 ps_printf(p, "<<\n/Type /Pages\n"); 811 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 812 (size_t)AFM2PNT(p, p->ps->width), 813 (size_t)AFM2PNT(p, p->ps->height)); 814 815 ps_printf(p, "/Count %zu\n", p->ps->pages); 816 ps_printf(p, "/Kids ["); 817 818 for (i = 0; i < p->ps->pages; i++) 819 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 820 821 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 822 823 ps_printf(p, "]\n>>\nendobj\n"); 824 pdf_obj(p, base); 825 ps_printf(p, "<<\n"); 826 ps_printf(p, "/Type /Catalog\n"); 827 ps_printf(p, "/Pages 2 0 R\n"); 828 ps_printf(p, ">>\n"); 829 xref = p->ps->pdfbytes; 830 ps_printf(p, "xref\n"); 831 ps_printf(p, "0 %zu\n", base + 1); 832 ps_printf(p, "0000000000 65535 f \n"); 833 834 for (i = 0; i < base; i++) 835 ps_printf(p, "%.10zu 00000 n \n", 836 p->ps->pdfobjs[(int)i]); 837 838 ps_printf(p, "trailer\n"); 839 ps_printf(p, "<<\n"); 840 ps_printf(p, "/Size %zu\n", base + 1); 841 ps_printf(p, "/Root %zu 0 R\n", base); 842 ps_printf(p, "/Info 1 0 R\n"); 843 ps_printf(p, ">>\n"); 844 ps_printf(p, "startxref\n"); 845 ps_printf(p, "%zu\n", xref); 846 ps_printf(p, "%%%%EOF\n"); 847 } 848 849 static void 850 ps_begin(struct termp *p) 851 { 852 int i; 853 854 /* 855 * Print margins into margin buffer. Nothing gets output to the 856 * screen yet, so we don't need to initialise the primary state. 857 */ 858 859 if (p->ps->psmarg) { 860 assert(p->ps->psmargsz); 861 p->ps->psmarg[0] = '\0'; 862 } 863 864 /*p->ps->pdfbytes = 0;*/ 865 p->ps->psmargcur = 0; 866 p->ps->flags = PS_MARGINS; 867 p->ps->pscol = p->ps->left; 868 p->ps->psrow = p->ps->header; 869 870 ps_setfont(p, TERMFONT_NONE); 871 872 (*p->headf)(p, p->argf); 873 (*p->endline)(p); 874 875 p->ps->pscol = p->ps->left; 876 p->ps->psrow = p->ps->footer; 877 878 (*p->footf)(p, p->argf); 879 (*p->endline)(p); 880 881 p->ps->flags &= ~PS_MARGINS; 882 883 assert(0 == p->ps->flags); 884 assert(p->ps->psmarg); 885 assert('\0' != p->ps->psmarg[0]); 886 887 /* 888 * Print header and initialise page state. Following this, 889 * stuff gets printed to the screen, so make sure we're sane. 890 */ 891 892 if (TERMTYPE_PS == p->type) { 893 ps_printf(p, "%%!PS-Adobe-3.0\n"); 894 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 895 ps_printf(p, "%%%%Orientation: Portrait\n"); 896 ps_printf(p, "%%%%Pages: (atend)\n"); 897 ps_printf(p, "%%%%PageOrder: Ascend\n"); 898 ps_printf(p, "%%%%DocumentMedia: " 899 "Default %zu %zu 0 () ()\n", 900 (size_t)AFM2PNT(p, p->ps->width), 901 (size_t)AFM2PNT(p, p->ps->height)); 902 ps_printf(p, "%%%%DocumentNeededResources: font"); 903 904 for (i = 0; i < (int)TERMFONT__MAX; i++) 905 ps_printf(p, " %s", fonts[i].name); 906 907 ps_printf(p, "\n%%%%EndComments\n"); 908 } else { 909 ps_printf(p, "%%PDF-1.1\n"); 910 pdf_obj(p, 1); 911 ps_printf(p, "<<\n"); 912 ps_printf(p, ">>\n"); 913 ps_printf(p, "endobj\n"); 914 915 for (i = 0; i < (int)TERMFONT__MAX; i++) { 916 pdf_obj(p, (size_t)i + 3); 917 ps_printf(p, "<<\n"); 918 ps_printf(p, "/Type /Font\n"); 919 ps_printf(p, "/Subtype /Type1\n"); 920 ps_printf(p, "/Name /F%d\n", i); 921 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 922 ps_printf(p, ">>\n"); 923 } 924 } 925 926 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 927 p->ps->pscol = p->ps->left; 928 p->ps->psrow = p->ps->top; 929 p->ps->flags |= PS_NEWPAGE; 930 ps_setfont(p, TERMFONT_NONE); 931 } 932 933 static void 934 ps_pletter(struct termp *p, int c) 935 { 936 int f; 937 938 /* 939 * If we haven't opened a page context, then output that we're 940 * in a new page and make sure the font is correctly set. 941 */ 942 943 if (PS_NEWPAGE & p->ps->flags) { 944 if (TERMTYPE_PS == p->type) { 945 ps_printf(p, "%%%%Page: %zu %zu\n", 946 p->ps->pages + 1, p->ps->pages + 1); 947 ps_printf(p, "/%s %zu selectfont\n", 948 fonts[(int)p->ps->lastf].name, 949 p->ps->scale); 950 } else { 951 pdf_obj(p, p->ps->pdfbody + 952 p->ps->pages * 4); 953 ps_printf(p, "<<\n"); 954 ps_printf(p, "/Length %zu 0 R\n", 955 p->ps->pdfbody + 1 + p->ps->pages * 4); 956 ps_printf(p, ">>\nstream\n"); 957 } 958 p->ps->pdflastpg = p->ps->pdfbytes; 959 p->ps->flags &= ~PS_NEWPAGE; 960 } 961 962 /* 963 * If we're not in a PostScript "word" context, then open one 964 * now at the current cursor. 965 */ 966 967 if ( ! (PS_INLINE & p->ps->flags)) { 968 if (TERMTYPE_PS != p->type) { 969 ps_printf(p, "BT\n/F%d %zu Tf\n", 970 (int)p->ps->lastf, p->ps->scale); 971 ps_printf(p, "%.3f %.3f Td\n(", 972 AFM2PNT(p, p->ps->pscol), 973 AFM2PNT(p, p->ps->psrow)); 974 } else 975 ps_printf(p, "%.3f %.3f moveto\n(", 976 AFM2PNT(p, p->ps->pscol), 977 AFM2PNT(p, p->ps->psrow)); 978 p->ps->flags |= PS_INLINE; 979 } 980 981 assert( ! (PS_NEWPAGE & p->ps->flags)); 982 983 /* 984 * We need to escape these characters as per the PostScript 985 * specification. We would also escape non-graphable characters 986 * (like tabs), but none of them would get to this point and 987 * it's superfluous to abort() on them. 988 */ 989 990 switch (c) { 991 case '(': 992 /* FALLTHROUGH */ 993 case ')': 994 /* FALLTHROUGH */ 995 case '\\': 996 ps_putchar(p, '\\'); 997 break; 998 default: 999 break; 1000 } 1001 1002 /* Write the character and adjust where we are on the page. */ 1003 1004 f = (int)p->ps->lastf; 1005 1006 if (c <= 32 || c - 32 >= MAXCHAR) 1007 c = 32; 1008 1009 ps_putchar(p, (char)c); 1010 c -= 32; 1011 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 1012 } 1013 1014 static void 1015 ps_pclose(struct termp *p) 1016 { 1017 1018 /* 1019 * Spit out that we're exiting a word context (this is a 1020 * "partial close" because we don't check the last-char buffer 1021 * or anything). 1022 */ 1023 1024 if ( ! (PS_INLINE & p->ps->flags)) 1025 return; 1026 1027 if (TERMTYPE_PS != p->type) { 1028 ps_printf(p, ") Tj\nET\n"); 1029 } else 1030 ps_printf(p, ") show\n"); 1031 1032 p->ps->flags &= ~PS_INLINE; 1033 } 1034 1035 static void 1036 ps_fclose(struct termp *p) 1037 { 1038 1039 /* 1040 * Strong closure: if we have a last-char, spit it out after 1041 * checking that we're in the right font mode. This will of 1042 * course open a new scope, if applicable. 1043 * 1044 * Following this, close out any scope that's open. 1045 */ 1046 1047 if (p->ps->last != '\0') { 1048 assert( ! (p->ps->flags & PS_BACKSP)); 1049 if (p->ps->nextf != p->ps->lastf) { 1050 ps_pclose(p); 1051 ps_setfont(p, p->ps->nextf); 1052 } 1053 p->ps->nextf = TERMFONT_NONE; 1054 ps_pletter(p, p->ps->last); 1055 p->ps->last = '\0'; 1056 } 1057 1058 if ( ! (PS_INLINE & p->ps->flags)) 1059 return; 1060 1061 ps_pclose(p); 1062 } 1063 1064 static void 1065 ps_letter(struct termp *p, int arg) 1066 { 1067 size_t savecol; 1068 char c; 1069 1070 c = arg >= 128 || arg <= 0 ? '?' : arg; 1071 1072 /* 1073 * When receiving a backspace, merely flag it. 1074 * We don't know yet whether it is 1075 * a font instruction or an overstrike. 1076 */ 1077 1078 if (c == '\b') { 1079 assert(p->ps->last != '\0'); 1080 assert( ! (p->ps->flags & PS_BACKSP)); 1081 p->ps->flags |= PS_BACKSP; 1082 return; 1083 } 1084 1085 /* 1086 * Decode font instructions. 1087 */ 1088 1089 if (p->ps->flags & PS_BACKSP) { 1090 if (p->ps->last == '_') { 1091 switch (p->ps->nextf) { 1092 case TERMFONT_BI: 1093 break; 1094 case TERMFONT_BOLD: 1095 p->ps->nextf = TERMFONT_BI; 1096 break; 1097 default: 1098 p->ps->nextf = TERMFONT_UNDER; 1099 } 1100 p->ps->last = c; 1101 p->ps->flags &= ~PS_BACKSP; 1102 return; 1103 } 1104 if (p->ps->last == c) { 1105 switch (p->ps->nextf) { 1106 case TERMFONT_BI: 1107 break; 1108 case TERMFONT_UNDER: 1109 p->ps->nextf = TERMFONT_BI; 1110 break; 1111 default: 1112 p->ps->nextf = TERMFONT_BOLD; 1113 } 1114 p->ps->flags &= ~PS_BACKSP; 1115 return; 1116 } 1117 1118 /* 1119 * This is not a font instruction, but rather 1120 * the next character. Prepare for overstrike. 1121 */ 1122 1123 savecol = p->ps->pscol; 1124 } else 1125 savecol = SIZE_MAX; 1126 1127 /* 1128 * We found the next character, so the font instructions 1129 * for the previous one are complete. 1130 * Use them and print it. 1131 */ 1132 1133 if (p->ps->last != '\0') { 1134 if (p->ps->nextf != p->ps->lastf) { 1135 ps_pclose(p); 1136 ps_setfont(p, p->ps->nextf); 1137 } 1138 p->ps->nextf = TERMFONT_NONE; 1139 ps_pletter(p, p->ps->last); 1140 } 1141 1142 /* 1143 * Do not print the current character yet because font 1144 * instructions might follow; only remember it. 1145 * For the first character, nothing else is done. 1146 * The final character will get printed from ps_fclose(). 1147 */ 1148 1149 p->ps->last = c; 1150 1151 /* 1152 * For an overstrike, back up to the previous position. 1153 */ 1154 1155 if (savecol != SIZE_MAX) { 1156 ps_pclose(p); 1157 p->ps->pscol = savecol; 1158 p->ps->flags &= ~PS_BACKSP; 1159 } 1160 } 1161 1162 static void 1163 ps_advance(struct termp *p, size_t len) 1164 { 1165 1166 /* 1167 * Advance some spaces. This can probably be made smarter, 1168 * i.e., to have multiple space-separated words in the same 1169 * scope, but this is easier: just close out the current scope 1170 * and readjust our column settings. 1171 */ 1172 1173 ps_fclose(p); 1174 p->ps->pscol += len; 1175 } 1176 1177 static void 1178 ps_endline(struct termp *p) 1179 { 1180 1181 /* Close out any scopes we have open: we're at eoln. */ 1182 1183 ps_fclose(p); 1184 1185 /* 1186 * If we're in the margin, don't try to recalculate our current 1187 * row. XXX: if the column tries to be fancy with multiple 1188 * lines, we'll do nasty stuff. 1189 */ 1190 1191 if (PS_MARGINS & p->ps->flags) 1192 return; 1193 1194 /* Left-justify. */ 1195 1196 p->ps->pscol = p->ps->left; 1197 1198 /* If we haven't printed anything, return. */ 1199 1200 if (PS_NEWPAGE & p->ps->flags) 1201 return; 1202 1203 /* 1204 * Put us down a line. If we're at the page bottom, spit out a 1205 * showpage and restart our row. 1206 */ 1207 1208 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1209 p->ps->psrow -= p->ps->lineheight; 1210 return; 1211 } 1212 1213 ps_closepage(p); 1214 } 1215 1216 static void 1217 ps_setfont(struct termp *p, enum termfont f) 1218 { 1219 1220 assert(f < TERMFONT__MAX); 1221 p->ps->lastf = f; 1222 1223 /* 1224 * If we're still at the top of the page, let the font-setting 1225 * be delayed until we actually have stuff to print. 1226 */ 1227 1228 if (PS_NEWPAGE & p->ps->flags) 1229 return; 1230 1231 if (TERMTYPE_PS == p->type) 1232 ps_printf(p, "/%s %zu selectfont\n", 1233 fonts[(int)f].name, p->ps->scale); 1234 else 1235 ps_printf(p, "/F%d %zu Tf\n", 1236 (int)f, p->ps->scale); 1237 } 1238 1239 static size_t 1240 ps_width(const struct termp *p, int c) 1241 { 1242 1243 if (c <= 32 || c - 32 >= MAXCHAR) 1244 c = 0; 1245 else 1246 c -= 32; 1247 1248 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1249 } 1250 1251 static double 1252 ps_hspan(const struct termp *p, const struct roffsu *su) 1253 { 1254 double r; 1255 1256 /* 1257 * All of these measurements are derived by converting from the 1258 * native measurement to AFM units. 1259 */ 1260 switch (su->unit) { 1261 case SCALE_BU: 1262 /* 1263 * Traditionally, the default unit is fixed to the 1264 * output media. So this would refer to the point. In 1265 * mandoc(1), however, we stick to the default terminal 1266 * scaling unit so that output is the same regardless 1267 * the media. 1268 */ 1269 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1270 break; 1271 case SCALE_CM: 1272 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1273 break; 1274 case SCALE_EM: 1275 r = su->scale * 1276 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1277 break; 1278 case SCALE_EN: 1279 r = su->scale * 1280 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1281 break; 1282 case SCALE_IN: 1283 r = PNT2AFM(p, su->scale * 72.0); 1284 break; 1285 case SCALE_MM: 1286 r = su->scale * 1287 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1288 break; 1289 case SCALE_PC: 1290 r = PNT2AFM(p, su->scale * 12.0); 1291 break; 1292 case SCALE_PT: 1293 r = PNT2AFM(p, su->scale * 1.0); 1294 break; 1295 case SCALE_VS: 1296 r = su->scale * p->ps->lineheight; 1297 break; 1298 default: 1299 r = su->scale; 1300 break; 1301 } 1302 1303 return(r); 1304 } 1305 1306 static void 1307 ps_growbuf(struct termp *p, size_t sz) 1308 { 1309 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1310 return; 1311 1312 if (sz < PS_BUFSLOP) 1313 sz = PS_BUFSLOP; 1314 1315 p->ps->psmargsz += sz; 1316 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1317 } 1318