1 /* $Id: term_ps.c,v 1.72 2015/01/21 19:40:54 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2014, 2015 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 "config.h" 19 20 #include <sys/types.h> 21 22 #include <assert.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 "main.h" 34 35 /* These work the buffer used by the header and footer. */ 36 #define PS_BUFSLOP 128 37 38 /* Convert PostScript point "x" to an AFM unit. */ 39 #define PNT2AFM(p, x) \ 40 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 41 42 /* Convert an AFM unit "x" to a PostScript points */ 43 #define AFM2PNT(p, x) \ 44 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 45 46 struct glyph { 47 unsigned short wx; /* WX in AFM */ 48 }; 49 50 struct font { 51 const char *name; /* FontName in AFM */ 52 #define MAXCHAR 95 /* total characters we can handle */ 53 struct glyph gly[MAXCHAR]; /* glyph metrics */ 54 }; 55 56 struct termp_ps { 57 int flags; 58 #define PS_INLINE (1 << 0) /* we're in a word */ 59 #define PS_MARGINS (1 << 1) /* we're in the margins */ 60 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 61 #define PS_BACKSP (1 << 3) /* last character was backspace */ 62 size_t pscol; /* visible column (AFM units) */ 63 size_t pscolnext; /* used for overstrike */ 64 size_t psrow; /* visible row (AFM units) */ 65 char *psmarg; /* margin buf */ 66 size_t psmargsz; /* margin buf size */ 67 size_t psmargcur; /* cur index in margin buf */ 68 char last; /* last non-backspace seen */ 69 enum termfont lastf; /* last set font */ 70 enum termfont nextf; /* building next font here */ 71 size_t scale; /* font scaling factor */ 72 size_t pages; /* number of pages shown */ 73 size_t lineheight; /* line height (AFM units) */ 74 size_t top; /* body top (AFM units) */ 75 size_t bottom; /* body bottom (AFM units) */ 76 size_t height; /* page height (AFM units */ 77 size_t width; /* page width (AFM units) */ 78 size_t lastwidth; /* page width before last ll */ 79 size_t left; /* body left (AFM units) */ 80 size_t header; /* header pos (AFM units) */ 81 size_t footer; /* footer pos (AFM units) */ 82 size_t pdfbytes; /* current output byte */ 83 size_t pdflastpg; /* byte of last page mark */ 84 size_t pdfbody; /* start of body object */ 85 size_t *pdfobjs; /* table of object offsets */ 86 size_t pdfobjsz; /* size of pdfobjs */ 87 }; 88 89 static double ps_hspan(const struct termp *, 90 const struct roffsu *); 91 static size_t ps_width(const struct termp *, int); 92 static void ps_advance(struct termp *, size_t); 93 static void ps_begin(struct termp *); 94 static void ps_closepage(struct termp *); 95 static void ps_end(struct termp *); 96 static void ps_endline(struct termp *); 97 static void ps_fclose(struct termp *); 98 static void ps_growbuf(struct termp *, size_t); 99 static void ps_letter(struct termp *, int); 100 static void ps_pclose(struct termp *); 101 static void ps_pletter(struct termp *, int); 102 #if __GNUC__ - 0 >= 4 103 __attribute__((__format__ (__printf__, 2, 3))) 104 #endif 105 static void ps_printf(struct termp *, const char *, ...); 106 static void ps_putchar(struct termp *, char); 107 static void ps_setfont(struct termp *, enum termfont); 108 static void ps_setwidth(struct termp *, int, size_t); 109 static struct termp *pspdf_alloc(const struct mchars *, char *); 110 static void pdf_obj(struct termp *, size_t); 111 112 /* 113 * We define, for the time being, three fonts: bold, oblique/italic, and 114 * normal (roman). The following table hard-codes the font metrics for 115 * ASCII, i.e., 32--127. 116 */ 117 118 static const struct font fonts[TERMFONT__MAX] = { 119 { "Times-Roman", { 120 { 250 }, 121 { 333 }, 122 { 408 }, 123 { 500 }, 124 { 500 }, 125 { 833 }, 126 { 778 }, 127 { 333 }, 128 { 333 }, 129 { 333 }, 130 { 500 }, 131 { 564 }, 132 { 250 }, 133 { 333 }, 134 { 250 }, 135 { 278 }, 136 { 500 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 500 }, 144 { 500 }, 145 { 500 }, 146 { 278 }, 147 { 278 }, 148 { 564 }, 149 { 564 }, 150 { 564 }, 151 { 444 }, 152 { 921 }, 153 { 722 }, 154 { 667 }, 155 { 667 }, 156 { 722 }, 157 { 611 }, 158 { 556 }, 159 { 722 }, 160 { 722 }, 161 { 333 }, 162 { 389 }, 163 { 722 }, 164 { 611 }, 165 { 889 }, 166 { 722 }, 167 { 722 }, 168 { 556 }, 169 { 722 }, 170 { 667 }, 171 { 556 }, 172 { 611 }, 173 { 722 }, 174 { 722 }, 175 { 944 }, 176 { 722 }, 177 { 722 }, 178 { 611 }, 179 { 333 }, 180 { 278 }, 181 { 333 }, 182 { 469 }, 183 { 500 }, 184 { 333 }, 185 { 444 }, 186 { 500 }, 187 { 444 }, 188 { 500}, 189 { 444}, 190 { 333}, 191 { 500}, 192 { 500}, 193 { 278}, 194 { 278}, 195 { 500}, 196 { 278}, 197 { 778}, 198 { 500}, 199 { 500}, 200 { 500}, 201 { 500}, 202 { 333}, 203 { 389}, 204 { 278}, 205 { 500}, 206 { 500}, 207 { 722}, 208 { 500}, 209 { 500}, 210 { 444}, 211 { 480}, 212 { 200}, 213 { 480}, 214 { 541}, 215 } }, 216 { "Times-Bold", { 217 { 250 }, 218 { 333 }, 219 { 555 }, 220 { 500 }, 221 { 500 }, 222 { 1000 }, 223 { 833 }, 224 { 333 }, 225 { 333 }, 226 { 333 }, 227 { 500 }, 228 { 570 }, 229 { 250 }, 230 { 333 }, 231 { 250 }, 232 { 278 }, 233 { 500 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 500 }, 241 { 500 }, 242 { 500 }, 243 { 333 }, 244 { 333 }, 245 { 570 }, 246 { 570 }, 247 { 570 }, 248 { 500 }, 249 { 930 }, 250 { 722 }, 251 { 667 }, 252 { 722 }, 253 { 722 }, 254 { 667 }, 255 { 611 }, 256 { 778 }, 257 { 778 }, 258 { 389 }, 259 { 500 }, 260 { 778 }, 261 { 667 }, 262 { 944 }, 263 { 722 }, 264 { 778 }, 265 { 611 }, 266 { 778 }, 267 { 722 }, 268 { 556 }, 269 { 667 }, 270 { 722 }, 271 { 722 }, 272 { 1000 }, 273 { 722 }, 274 { 722 }, 275 { 667 }, 276 { 333 }, 277 { 278 }, 278 { 333 }, 279 { 581 }, 280 { 500 }, 281 { 333 }, 282 { 500 }, 283 { 556 }, 284 { 444 }, 285 { 556 }, 286 { 444 }, 287 { 333 }, 288 { 500 }, 289 { 556 }, 290 { 278 }, 291 { 333 }, 292 { 556 }, 293 { 278 }, 294 { 833 }, 295 { 556 }, 296 { 500 }, 297 { 556 }, 298 { 556 }, 299 { 444 }, 300 { 389 }, 301 { 333 }, 302 { 556 }, 303 { 500 }, 304 { 722 }, 305 { 500 }, 306 { 500 }, 307 { 444 }, 308 { 394 }, 309 { 220 }, 310 { 394 }, 311 { 520 }, 312 } }, 313 { "Times-Italic", { 314 { 250 }, 315 { 333 }, 316 { 420 }, 317 { 500 }, 318 { 500 }, 319 { 833 }, 320 { 778 }, 321 { 333 }, 322 { 333 }, 323 { 333 }, 324 { 500 }, 325 { 675 }, 326 { 250 }, 327 { 333 }, 328 { 250 }, 329 { 278 }, 330 { 500 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 500 }, 338 { 500 }, 339 { 500 }, 340 { 333 }, 341 { 333 }, 342 { 675 }, 343 { 675 }, 344 { 675 }, 345 { 500 }, 346 { 920 }, 347 { 611 }, 348 { 611 }, 349 { 667 }, 350 { 722 }, 351 { 611 }, 352 { 611 }, 353 { 722 }, 354 { 722 }, 355 { 333 }, 356 { 444 }, 357 { 667 }, 358 { 556 }, 359 { 833 }, 360 { 667 }, 361 { 722 }, 362 { 611 }, 363 { 722 }, 364 { 611 }, 365 { 500 }, 366 { 556 }, 367 { 722 }, 368 { 611 }, 369 { 833 }, 370 { 611 }, 371 { 556 }, 372 { 556 }, 373 { 389 }, 374 { 278 }, 375 { 389 }, 376 { 422 }, 377 { 500 }, 378 { 333 }, 379 { 500 }, 380 { 500 }, 381 { 444 }, 382 { 500 }, 383 { 444 }, 384 { 278 }, 385 { 500 }, 386 { 500 }, 387 { 278 }, 388 { 278 }, 389 { 444 }, 390 { 278 }, 391 { 722 }, 392 { 500 }, 393 { 500 }, 394 { 500 }, 395 { 500 }, 396 { 389 }, 397 { 389 }, 398 { 278 }, 399 { 500 }, 400 { 444 }, 401 { 667 }, 402 { 444 }, 403 { 444 }, 404 { 389 }, 405 { 400 }, 406 { 275 }, 407 { 400 }, 408 { 541 }, 409 } }, 410 { "Times-BoldItalic", { 411 { 250 }, 412 { 389 }, 413 { 555 }, 414 { 500 }, 415 { 500 }, 416 { 833 }, 417 { 778 }, 418 { 333 }, 419 { 333 }, 420 { 333 }, 421 { 500 }, 422 { 570 }, 423 { 250 }, 424 { 333 }, 425 { 250 }, 426 { 278 }, 427 { 500 }, 428 { 500 }, 429 { 500 }, 430 { 500 }, 431 { 500 }, 432 { 500 }, 433 { 500 }, 434 { 500 }, 435 { 500 }, 436 { 500 }, 437 { 333 }, 438 { 333 }, 439 { 570 }, 440 { 570 }, 441 { 570 }, 442 { 500 }, 443 { 832 }, 444 { 667 }, 445 { 667 }, 446 { 667 }, 447 { 722 }, 448 { 667 }, 449 { 667 }, 450 { 722 }, 451 { 778 }, 452 { 389 }, 453 { 500 }, 454 { 667 }, 455 { 611 }, 456 { 889 }, 457 { 722 }, 458 { 722 }, 459 { 611 }, 460 { 722 }, 461 { 667 }, 462 { 556 }, 463 { 611 }, 464 { 722 }, 465 { 667 }, 466 { 889 }, 467 { 667 }, 468 { 611 }, 469 { 611 }, 470 { 333 }, 471 { 278 }, 472 { 333 }, 473 { 570 }, 474 { 500 }, 475 { 333 }, 476 { 500 }, 477 { 500 }, 478 { 444 }, 479 { 500 }, 480 { 444 }, 481 { 333 }, 482 { 500 }, 483 { 556 }, 484 { 278 }, 485 { 278 }, 486 { 500 }, 487 { 278 }, 488 { 778 }, 489 { 556 }, 490 { 500 }, 491 { 500 }, 492 { 500 }, 493 { 389 }, 494 { 389 }, 495 { 278 }, 496 { 556 }, 497 { 444 }, 498 { 667 }, 499 { 500 }, 500 { 444 }, 501 { 389 }, 502 { 348 }, 503 { 220 }, 504 { 348 }, 505 { 570 }, 506 } }, 507 }; 508 509 void * 510 pdf_alloc(const struct mchars *mchars, char *outopts) 511 { 512 struct termp *p; 513 514 if (NULL != (p = pspdf_alloc(mchars, outopts))) 515 p->type = TERMTYPE_PDF; 516 517 return(p); 518 } 519 520 void * 521 ps_alloc(const struct mchars *mchars, char *outopts) 522 { 523 struct termp *p; 524 525 if (NULL != (p = pspdf_alloc(mchars, outopts))) 526 p->type = TERMTYPE_PS; 527 528 return(p); 529 } 530 531 static struct termp * 532 pspdf_alloc(const struct mchars *mchars, char *outopts) 533 { 534 struct termp *p; 535 unsigned int pagex, pagey; 536 size_t marginx, marginy, lineheight; 537 const char *toks[2]; 538 const char *pp; 539 char *v; 540 541 p = mandoc_calloc(1, sizeof(struct termp)); 542 p->symtab = mchars; 543 p->enc = TERMENC_ASCII; 544 p->fontq = mandoc_reallocarray(NULL, 545 (p->fontsz = 8), sizeof(enum termfont)); 546 p->fontq[0] = p->fontl = TERMFONT_NONE; 547 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 548 549 p->advance = ps_advance; 550 p->begin = ps_begin; 551 p->end = ps_end; 552 p->endline = ps_endline; 553 p->hspan = ps_hspan; 554 p->letter = ps_letter; 555 p->setwidth = ps_setwidth; 556 p->width = ps_width; 557 558 toks[0] = "paper"; 559 toks[1] = NULL; 560 561 pp = NULL; 562 563 while (outopts && *outopts) 564 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 565 case 0: 566 pp = v; 567 break; 568 default: 569 break; 570 } 571 572 /* Default to US letter (millimetres). */ 573 574 pagex = 216; 575 pagey = 279; 576 577 /* 578 * The ISO-269 paper sizes can be calculated automatically, but 579 * it would require bringing in -lm for pow() and I'd rather not 580 * do that. So just do it the easy way for now. Since this 581 * only happens once, I'm not terribly concerned. 582 */ 583 584 if (pp && strcasecmp(pp, "letter")) { 585 if (0 == strcasecmp(pp, "a3")) { 586 pagex = 297; 587 pagey = 420; 588 } else if (0 == strcasecmp(pp, "a4")) { 589 pagex = 210; 590 pagey = 297; 591 } else if (0 == strcasecmp(pp, "a5")) { 592 pagex = 148; 593 pagey = 210; 594 } else if (0 == strcasecmp(pp, "legal")) { 595 pagex = 216; 596 pagey = 356; 597 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 598 fprintf(stderr, "%s: Unknown paper\n", pp); 599 } 600 601 /* 602 * This MUST be defined before any PNT2AFM or AFM2PNT 603 * calculations occur. 604 */ 605 606 p->ps->scale = 11; 607 608 /* Remember millimetres -> AFM units. */ 609 610 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 611 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 612 613 /* Margins are 1/9 the page x and y. */ 614 615 marginx = (size_t)((double)pagex / 9.0); 616 marginy = (size_t)((double)pagey / 9.0); 617 618 /* Line-height is 1.4em. */ 619 620 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 621 622 p->ps->width = p->ps->lastwidth = (size_t)pagex; 623 p->ps->height = (size_t)pagey; 624 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 625 p->ps->top = pagey - marginy; 626 p->ps->footer = (marginy / 2) - (lineheight / 2); 627 p->ps->bottom = marginy; 628 p->ps->left = marginx; 629 p->ps->lineheight = lineheight; 630 631 p->defrmargin = pagex - (marginx * 2); 632 return(p); 633 } 634 635 static void 636 ps_setwidth(struct termp *p, int iop, size_t width) 637 { 638 size_t lastwidth; 639 640 lastwidth = p->ps->width; 641 if (iop > 0) 642 p->ps->width += width; 643 else if (iop == 0) 644 p->ps->width = width ? width : p->ps->lastwidth; 645 else if (p->ps->width > width) 646 p->ps->width -= width; 647 else 648 p->ps->width = 0; 649 p->ps->lastwidth = lastwidth; 650 } 651 652 void 653 pspdf_free(void *arg) 654 { 655 struct termp *p; 656 657 p = (struct termp *)arg; 658 659 if (p->ps->psmarg) 660 free(p->ps->psmarg); 661 if (p->ps->pdfobjs) 662 free(p->ps->pdfobjs); 663 664 free(p->ps); 665 term_free(p); 666 } 667 668 static void 669 ps_printf(struct termp *p, const char *fmt, ...) 670 { 671 va_list ap; 672 int pos, len; 673 674 va_start(ap, fmt); 675 676 /* 677 * If we're running in regular mode, then pipe directly into 678 * vprintf(). If we're processing margins, then push the data 679 * into our growable margin buffer. 680 */ 681 682 if ( ! (PS_MARGINS & p->ps->flags)) { 683 len = vprintf(fmt, ap); 684 va_end(ap); 685 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 686 return; 687 } 688 689 /* 690 * XXX: I assume that the in-margin print won't exceed 691 * PS_BUFSLOP (128 bytes), which is reasonable but still an 692 * assumption that will cause pukeage if it's not the case. 693 */ 694 695 ps_growbuf(p, PS_BUFSLOP); 696 697 pos = (int)p->ps->psmargcur; 698 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 699 700 va_end(ap); 701 702 p->ps->psmargcur = strlen(p->ps->psmarg); 703 } 704 705 static void 706 ps_putchar(struct termp *p, char c) 707 { 708 int pos; 709 710 /* See ps_printf(). */ 711 712 if ( ! (PS_MARGINS & p->ps->flags)) { 713 putchar(c); 714 p->ps->pdfbytes++; 715 return; 716 } 717 718 ps_growbuf(p, 2); 719 720 pos = (int)p->ps->psmargcur++; 721 p->ps->psmarg[pos++] = c; 722 p->ps->psmarg[pos] = '\0'; 723 } 724 725 static void 726 pdf_obj(struct termp *p, size_t obj) 727 { 728 729 assert(obj > 0); 730 731 if ((obj - 1) >= p->ps->pdfobjsz) { 732 p->ps->pdfobjsz = obj + 128; 733 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 734 p->ps->pdfobjsz, sizeof(size_t)); 735 } 736 737 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 738 ps_printf(p, "%zu 0 obj\n", obj); 739 } 740 741 static void 742 ps_closepage(struct termp *p) 743 { 744 int i; 745 size_t len, base; 746 747 /* 748 * Close out a page that we've already flushed to output. In 749 * PostScript, we simply note that the page must be showed. In 750 * PDF, we must now create the Length, Resource, and Page node 751 * for the page contents. 752 */ 753 754 assert(p->ps->psmarg && p->ps->psmarg[0]); 755 ps_printf(p, "%s", p->ps->psmarg); 756 757 if (TERMTYPE_PS != p->type) { 758 ps_printf(p, "ET\n"); 759 760 len = p->ps->pdfbytes - p->ps->pdflastpg; 761 base = p->ps->pages * 4 + p->ps->pdfbody; 762 763 ps_printf(p, "endstream\nendobj\n"); 764 765 /* Length of content. */ 766 pdf_obj(p, base + 1); 767 ps_printf(p, "%zu\nendobj\n", len); 768 769 /* Resource for content. */ 770 pdf_obj(p, base + 2); 771 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 772 ps_printf(p, "/Font <<\n"); 773 for (i = 0; i < (int)TERMFONT__MAX; i++) 774 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 775 ps_printf(p, ">>\n>>\n"); 776 777 /* Page node. */ 778 pdf_obj(p, base + 3); 779 ps_printf(p, "<<\n"); 780 ps_printf(p, "/Type /Page\n"); 781 ps_printf(p, "/Parent 2 0 R\n"); 782 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 783 ps_printf(p, "/Contents %zu 0 R\n", base); 784 ps_printf(p, ">>\nendobj\n"); 785 } else 786 ps_printf(p, "showpage\n"); 787 788 p->ps->pages++; 789 p->ps->psrow = p->ps->top; 790 assert( ! (PS_NEWPAGE & p->ps->flags)); 791 p->ps->flags |= PS_NEWPAGE; 792 } 793 794 static void 795 ps_end(struct termp *p) 796 { 797 size_t i, xref, base; 798 799 /* 800 * At the end of the file, do one last showpage. This is the 801 * same behaviour as groff(1) and works for multiple pages as 802 * well as just one. 803 */ 804 805 if ( ! (PS_NEWPAGE & p->ps->flags)) { 806 assert(0 == p->ps->flags); 807 assert('\0' == p->ps->last); 808 ps_closepage(p); 809 } 810 811 if (TERMTYPE_PS == p->type) { 812 ps_printf(p, "%%%%Trailer\n"); 813 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 814 ps_printf(p, "%%%%EOF\n"); 815 return; 816 } 817 818 pdf_obj(p, 2); 819 ps_printf(p, "<<\n/Type /Pages\n"); 820 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 821 (size_t)AFM2PNT(p, p->ps->width), 822 (size_t)AFM2PNT(p, p->ps->height)); 823 824 ps_printf(p, "/Count %zu\n", p->ps->pages); 825 ps_printf(p, "/Kids ["); 826 827 for (i = 0; i < p->ps->pages; i++) 828 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 829 830 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 831 832 ps_printf(p, "]\n>>\nendobj\n"); 833 pdf_obj(p, base); 834 ps_printf(p, "<<\n"); 835 ps_printf(p, "/Type /Catalog\n"); 836 ps_printf(p, "/Pages 2 0 R\n"); 837 ps_printf(p, ">>\n"); 838 xref = p->ps->pdfbytes; 839 ps_printf(p, "xref\n"); 840 ps_printf(p, "0 %zu\n", base + 1); 841 ps_printf(p, "0000000000 65535 f \n"); 842 843 for (i = 0; i < base; i++) 844 ps_printf(p, "%.10zu 00000 n \n", 845 p->ps->pdfobjs[(int)i]); 846 847 ps_printf(p, "trailer\n"); 848 ps_printf(p, "<<\n"); 849 ps_printf(p, "/Size %zu\n", base + 1); 850 ps_printf(p, "/Root %zu 0 R\n", base); 851 ps_printf(p, "/Info 1 0 R\n"); 852 ps_printf(p, ">>\n"); 853 ps_printf(p, "startxref\n"); 854 ps_printf(p, "%zu\n", xref); 855 ps_printf(p, "%%%%EOF\n"); 856 } 857 858 static void 859 ps_begin(struct termp *p) 860 { 861 int i; 862 863 /* 864 * Print margins into margin buffer. Nothing gets output to the 865 * screen yet, so we don't need to initialise the primary state. 866 */ 867 868 if (p->ps->psmarg) { 869 assert(p->ps->psmargsz); 870 p->ps->psmarg[0] = '\0'; 871 } 872 873 /*p->ps->pdfbytes = 0;*/ 874 p->ps->psmargcur = 0; 875 p->ps->flags = PS_MARGINS; 876 p->ps->pscol = p->ps->left; 877 p->ps->psrow = p->ps->header; 878 879 ps_setfont(p, TERMFONT_NONE); 880 881 (*p->headf)(p, p->argf); 882 (*p->endline)(p); 883 884 p->ps->pscol = p->ps->left; 885 p->ps->psrow = p->ps->footer; 886 887 (*p->footf)(p, p->argf); 888 (*p->endline)(p); 889 890 p->ps->flags &= ~PS_MARGINS; 891 892 assert(0 == p->ps->flags); 893 assert(p->ps->psmarg); 894 assert('\0' != p->ps->psmarg[0]); 895 896 /* 897 * Print header and initialise page state. Following this, 898 * stuff gets printed to the screen, so make sure we're sane. 899 */ 900 901 if (TERMTYPE_PS == p->type) { 902 ps_printf(p, "%%!PS-Adobe-3.0\n"); 903 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 904 ps_printf(p, "%%%%Orientation: Portrait\n"); 905 ps_printf(p, "%%%%Pages: (atend)\n"); 906 ps_printf(p, "%%%%PageOrder: Ascend\n"); 907 ps_printf(p, "%%%%DocumentMedia: " 908 "Default %zu %zu 0 () ()\n", 909 (size_t)AFM2PNT(p, p->ps->width), 910 (size_t)AFM2PNT(p, p->ps->height)); 911 ps_printf(p, "%%%%DocumentNeededResources: font"); 912 913 for (i = 0; i < (int)TERMFONT__MAX; i++) 914 ps_printf(p, " %s", fonts[i].name); 915 916 ps_printf(p, "\n%%%%EndComments\n"); 917 } else { 918 ps_printf(p, "%%PDF-1.1\n"); 919 pdf_obj(p, 1); 920 ps_printf(p, "<<\n"); 921 ps_printf(p, ">>\n"); 922 ps_printf(p, "endobj\n"); 923 924 for (i = 0; i < (int)TERMFONT__MAX; i++) { 925 pdf_obj(p, (size_t)i + 3); 926 ps_printf(p, "<<\n"); 927 ps_printf(p, "/Type /Font\n"); 928 ps_printf(p, "/Subtype /Type1\n"); 929 ps_printf(p, "/Name /F%d\n", i); 930 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 931 ps_printf(p, ">>\n"); 932 } 933 } 934 935 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 936 p->ps->pscol = p->ps->left; 937 p->ps->psrow = p->ps->top; 938 p->ps->flags |= PS_NEWPAGE; 939 ps_setfont(p, TERMFONT_NONE); 940 } 941 942 static void 943 ps_pletter(struct termp *p, int c) 944 { 945 int f; 946 947 /* 948 * If we haven't opened a page context, then output that we're 949 * in a new page and make sure the font is correctly set. 950 */ 951 952 if (PS_NEWPAGE & p->ps->flags) { 953 if (TERMTYPE_PS == p->type) { 954 ps_printf(p, "%%%%Page: %zu %zu\n", 955 p->ps->pages + 1, p->ps->pages + 1); 956 ps_printf(p, "/%s %zu selectfont\n", 957 fonts[(int)p->ps->lastf].name, 958 p->ps->scale); 959 } else { 960 pdf_obj(p, p->ps->pdfbody + 961 p->ps->pages * 4); 962 ps_printf(p, "<<\n"); 963 ps_printf(p, "/Length %zu 0 R\n", 964 p->ps->pdfbody + 1 + p->ps->pages * 4); 965 ps_printf(p, ">>\nstream\n"); 966 } 967 p->ps->pdflastpg = p->ps->pdfbytes; 968 p->ps->flags &= ~PS_NEWPAGE; 969 } 970 971 /* 972 * If we're not in a PostScript "word" context, then open one 973 * now at the current cursor. 974 */ 975 976 if ( ! (PS_INLINE & p->ps->flags)) { 977 if (TERMTYPE_PS != p->type) { 978 ps_printf(p, "BT\n/F%d %zu Tf\n", 979 (int)p->ps->lastf, p->ps->scale); 980 ps_printf(p, "%.3f %.3f Td\n(", 981 AFM2PNT(p, p->ps->pscol), 982 AFM2PNT(p, p->ps->psrow)); 983 } else 984 ps_printf(p, "%.3f %.3f moveto\n(", 985 AFM2PNT(p, p->ps->pscol), 986 AFM2PNT(p, p->ps->psrow)); 987 p->ps->flags |= PS_INLINE; 988 } 989 990 assert( ! (PS_NEWPAGE & p->ps->flags)); 991 992 /* 993 * We need to escape these characters as per the PostScript 994 * specification. We would also escape non-graphable characters 995 * (like tabs), but none of them would get to this point and 996 * it's superfluous to abort() on them. 997 */ 998 999 switch (c) { 1000 case '(': 1001 /* FALLTHROUGH */ 1002 case ')': 1003 /* FALLTHROUGH */ 1004 case '\\': 1005 ps_putchar(p, '\\'); 1006 break; 1007 default: 1008 break; 1009 } 1010 1011 /* Write the character and adjust where we are on the page. */ 1012 1013 f = (int)p->ps->lastf; 1014 1015 if (c <= 32 || c - 32 >= MAXCHAR) 1016 c = 32; 1017 1018 ps_putchar(p, (char)c); 1019 c -= 32; 1020 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 1021 } 1022 1023 static void 1024 ps_pclose(struct termp *p) 1025 { 1026 1027 /* 1028 * Spit out that we're exiting a word context (this is a 1029 * "partial close" because we don't check the last-char buffer 1030 * or anything). 1031 */ 1032 1033 if ( ! (PS_INLINE & p->ps->flags)) 1034 return; 1035 1036 if (TERMTYPE_PS != p->type) { 1037 ps_printf(p, ") Tj\nET\n"); 1038 } else 1039 ps_printf(p, ") show\n"); 1040 1041 p->ps->flags &= ~PS_INLINE; 1042 } 1043 1044 static void 1045 ps_fclose(struct termp *p) 1046 { 1047 1048 /* 1049 * Strong closure: if we have a last-char, spit it out after 1050 * checking that we're in the right font mode. This will of 1051 * course open a new scope, if applicable. 1052 * 1053 * Following this, close out any scope that's open. 1054 */ 1055 1056 if (p->ps->last != '\0') { 1057 assert( ! (p->ps->flags & PS_BACKSP)); 1058 if (p->ps->nextf != p->ps->lastf) { 1059 ps_pclose(p); 1060 ps_setfont(p, p->ps->nextf); 1061 } 1062 p->ps->nextf = TERMFONT_NONE; 1063 ps_pletter(p, p->ps->last); 1064 p->ps->last = '\0'; 1065 } 1066 1067 if ( ! (PS_INLINE & p->ps->flags)) 1068 return; 1069 1070 ps_pclose(p); 1071 } 1072 1073 static void 1074 ps_letter(struct termp *p, int arg) 1075 { 1076 size_t savecol, wx; 1077 char c; 1078 1079 c = arg >= 128 || arg <= 0 ? '?' : arg; 1080 1081 /* 1082 * When receiving a backspace, merely flag it. 1083 * We don't know yet whether it is 1084 * a font instruction or an overstrike. 1085 */ 1086 1087 if (c == '\b') { 1088 assert(p->ps->last != '\0'); 1089 assert( ! (p->ps->flags & PS_BACKSP)); 1090 p->ps->flags |= PS_BACKSP; 1091 return; 1092 } 1093 1094 /* 1095 * Decode font instructions. 1096 */ 1097 1098 if (p->ps->flags & PS_BACKSP) { 1099 if (p->ps->last == '_') { 1100 switch (p->ps->nextf) { 1101 case TERMFONT_BI: 1102 break; 1103 case TERMFONT_BOLD: 1104 p->ps->nextf = TERMFONT_BI; 1105 break; 1106 default: 1107 p->ps->nextf = TERMFONT_UNDER; 1108 } 1109 p->ps->last = c; 1110 p->ps->flags &= ~PS_BACKSP; 1111 return; 1112 } 1113 if (p->ps->last == c) { 1114 switch (p->ps->nextf) { 1115 case TERMFONT_BI: 1116 break; 1117 case TERMFONT_UNDER: 1118 p->ps->nextf = TERMFONT_BI; 1119 break; 1120 default: 1121 p->ps->nextf = TERMFONT_BOLD; 1122 } 1123 p->ps->flags &= ~PS_BACKSP; 1124 return; 1125 } 1126 1127 /* 1128 * This is not a font instruction, but rather 1129 * the next character. Prepare for overstrike. 1130 */ 1131 1132 savecol = p->ps->pscol; 1133 } else 1134 savecol = SIZE_MAX; 1135 1136 /* 1137 * We found the next character, so the font instructions 1138 * for the previous one are complete. 1139 * Use them and print it. 1140 */ 1141 1142 if (p->ps->last != '\0') { 1143 if (p->ps->nextf != p->ps->lastf) { 1144 ps_pclose(p); 1145 ps_setfont(p, p->ps->nextf); 1146 } 1147 p->ps->nextf = TERMFONT_NONE; 1148 1149 /* 1150 * For an overstrike, if a previous character 1151 * was wider, advance to center the new one. 1152 */ 1153 1154 if (p->ps->pscolnext) { 1155 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; 1156 if (p->ps->pscol + wx < p->ps->pscolnext) 1157 p->ps->pscol = (p->ps->pscol + 1158 p->ps->pscolnext - wx) / 2; 1159 } 1160 1161 ps_pletter(p, p->ps->last); 1162 1163 /* 1164 * For an overstrike, if a previous character 1165 * was wider, advance to the end of the old one. 1166 */ 1167 1168 if (p->ps->pscol < p->ps->pscolnext) { 1169 ps_pclose(p); 1170 p->ps->pscol = p->ps->pscolnext; 1171 } 1172 } 1173 1174 /* 1175 * Do not print the current character yet because font 1176 * instructions might follow; only remember it. 1177 * For the first character, nothing else is done. 1178 * The final character will get printed from ps_fclose(). 1179 */ 1180 1181 p->ps->last = c; 1182 1183 /* 1184 * For an overstrike, back up to the previous position. 1185 * If the previous character is wider than any it overstrikes, 1186 * remember the current position, because it might also be 1187 * wider than all that will overstrike it. 1188 */ 1189 1190 if (savecol != SIZE_MAX) { 1191 if (p->ps->pscolnext < p->ps->pscol) 1192 p->ps->pscolnext = p->ps->pscol; 1193 ps_pclose(p); 1194 p->ps->pscol = savecol; 1195 p->ps->flags &= ~PS_BACKSP; 1196 } else 1197 p->ps->pscolnext = 0; 1198 } 1199 1200 static void 1201 ps_advance(struct termp *p, size_t len) 1202 { 1203 1204 /* 1205 * Advance some spaces. This can probably be made smarter, 1206 * i.e., to have multiple space-separated words in the same 1207 * scope, but this is easier: just close out the current scope 1208 * and readjust our column settings. 1209 */ 1210 1211 ps_fclose(p); 1212 p->ps->pscol += len; 1213 } 1214 1215 static void 1216 ps_endline(struct termp *p) 1217 { 1218 1219 /* Close out any scopes we have open: we're at eoln. */ 1220 1221 ps_fclose(p); 1222 1223 /* 1224 * If we're in the margin, don't try to recalculate our current 1225 * row. XXX: if the column tries to be fancy with multiple 1226 * lines, we'll do nasty stuff. 1227 */ 1228 1229 if (PS_MARGINS & p->ps->flags) 1230 return; 1231 1232 /* Left-justify. */ 1233 1234 p->ps->pscol = p->ps->left; 1235 1236 /* If we haven't printed anything, return. */ 1237 1238 if (PS_NEWPAGE & p->ps->flags) 1239 return; 1240 1241 /* 1242 * Put us down a line. If we're at the page bottom, spit out a 1243 * showpage and restart our row. 1244 */ 1245 1246 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1247 p->ps->psrow -= p->ps->lineheight; 1248 return; 1249 } 1250 1251 ps_closepage(p); 1252 } 1253 1254 static void 1255 ps_setfont(struct termp *p, enum termfont f) 1256 { 1257 1258 assert(f < TERMFONT__MAX); 1259 p->ps->lastf = f; 1260 1261 /* 1262 * If we're still at the top of the page, let the font-setting 1263 * be delayed until we actually have stuff to print. 1264 */ 1265 1266 if (PS_NEWPAGE & p->ps->flags) 1267 return; 1268 1269 if (TERMTYPE_PS == p->type) 1270 ps_printf(p, "/%s %zu selectfont\n", 1271 fonts[(int)f].name, p->ps->scale); 1272 else 1273 ps_printf(p, "/F%d %zu Tf\n", 1274 (int)f, p->ps->scale); 1275 } 1276 1277 static size_t 1278 ps_width(const struct termp *p, int c) 1279 { 1280 1281 if (c <= 32 || c - 32 >= MAXCHAR) 1282 c = 0; 1283 else 1284 c -= 32; 1285 1286 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1287 } 1288 1289 static double 1290 ps_hspan(const struct termp *p, const struct roffsu *su) 1291 { 1292 double r; 1293 1294 /* 1295 * All of these measurements are derived by converting from the 1296 * native measurement to AFM units. 1297 */ 1298 switch (su->unit) { 1299 case SCALE_BU: 1300 /* 1301 * Traditionally, the default unit is fixed to the 1302 * output media. So this would refer to the point. In 1303 * mandoc(1), however, we stick to the default terminal 1304 * scaling unit so that output is the same regardless 1305 * the media. 1306 */ 1307 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1308 break; 1309 case SCALE_CM: 1310 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1311 break; 1312 case SCALE_EM: 1313 r = su->scale * 1314 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1315 break; 1316 case SCALE_EN: 1317 r = su->scale * 1318 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1319 break; 1320 case SCALE_IN: 1321 r = PNT2AFM(p, su->scale * 72.0); 1322 break; 1323 case SCALE_MM: 1324 r = su->scale * 1325 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1326 break; 1327 case SCALE_PC: 1328 r = PNT2AFM(p, su->scale * 12.0); 1329 break; 1330 case SCALE_PT: 1331 r = PNT2AFM(p, su->scale * 1.0); 1332 break; 1333 case SCALE_VS: 1334 r = su->scale * p->ps->lineheight; 1335 break; 1336 default: 1337 r = su->scale; 1338 break; 1339 } 1340 1341 return(r); 1342 } 1343 1344 static void 1345 ps_growbuf(struct termp *p, size_t sz) 1346 { 1347 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1348 return; 1349 1350 if (sz < PS_BUFSLOP) 1351 sz = PS_BUFSLOP; 1352 1353 p->ps->psmargsz += sz; 1354 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1355 } 1356