1 /* $OpenBSD: term_ps.c,v 1.39 2015/04/04 17:46:58 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 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 <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 "manconf.h" 32 #include "main.h" 33 34 /* These work the buffer used by the header and footer. */ 35 #define PS_BUFSLOP 128 36 37 /* Convert PostScript point "x" to an AFM unit. */ 38 #define PNT2AFM(p, x) \ 39 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 40 41 /* Convert an AFM unit "x" to a PostScript points */ 42 #define AFM2PNT(p, x) \ 43 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 44 45 struct glyph { 46 unsigned short wx; /* WX in AFM */ 47 }; 48 49 struct font { 50 const char *name; /* FontName in AFM */ 51 #define MAXCHAR 95 /* total characters we can handle */ 52 struct glyph gly[MAXCHAR]; /* glyph metrics */ 53 }; 54 55 struct termp_ps { 56 int flags; 57 #define PS_INLINE (1 << 0) /* we're in a word */ 58 #define PS_MARGINS (1 << 1) /* we're in the margins */ 59 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 60 #define PS_BACKSP (1 << 3) /* last character was backspace */ 61 size_t pscol; /* visible column (AFM units) */ 62 size_t pscolnext; /* used for overstrike */ 63 size_t psrow; /* visible row (AFM units) */ 64 char *psmarg; /* margin buf */ 65 size_t psmargsz; /* margin buf size */ 66 size_t psmargcur; /* cur index in margin buf */ 67 char last; /* last non-backspace seen */ 68 enum termfont lastf; /* last set font */ 69 enum termfont nextf; /* building next font here */ 70 size_t scale; /* font scaling factor */ 71 size_t pages; /* number of pages shown */ 72 size_t lineheight; /* line height (AFM units) */ 73 size_t top; /* body top (AFM units) */ 74 size_t bottom; /* body bottom (AFM units) */ 75 size_t height; /* page height (AFM units */ 76 size_t width; /* page width (AFM units) */ 77 size_t lastwidth; /* page width before last ll */ 78 size_t left; /* body left (AFM units) */ 79 size_t header; /* header pos (AFM units) */ 80 size_t footer; /* footer pos (AFM units) */ 81 size_t pdfbytes; /* current output byte */ 82 size_t pdflastpg; /* byte of last page mark */ 83 size_t pdfbody; /* start of body object */ 84 size_t *pdfobjs; /* table of object offsets */ 85 size_t pdfobjsz; /* size of pdfobjs */ 86 }; 87 88 static int ps_hspan(const struct termp *, 89 const struct roffsu *); 90 static size_t ps_width(const struct termp *, int); 91 static void ps_advance(struct termp *, size_t); 92 static void ps_begin(struct termp *); 93 static void ps_closepage(struct termp *); 94 static void ps_end(struct termp *); 95 static void ps_endline(struct termp *); 96 static void ps_fclose(struct termp *); 97 static void ps_growbuf(struct termp *, size_t); 98 static void ps_letter(struct termp *, int); 99 static void ps_pclose(struct termp *); 100 static void ps_pletter(struct termp *, int); 101 static void ps_printf(struct termp *, const char *, ...); 102 static void ps_putchar(struct termp *, char); 103 static void ps_setfont(struct termp *, enum termfont); 104 static void ps_setwidth(struct termp *, int, int); 105 static struct termp *pspdf_alloc(const struct mchars *, 106 const struct manoutput *); 107 static void pdf_obj(struct termp *, size_t); 108 109 /* 110 * We define, for the time being, three fonts: bold, oblique/italic, and 111 * normal (roman). The following table hard-codes the font metrics for 112 * ASCII, i.e., 32--127. 113 */ 114 115 static const struct font fonts[TERMFONT__MAX] = { 116 { "Times-Roman", { 117 { 250 }, 118 { 333 }, 119 { 408 }, 120 { 500 }, 121 { 500 }, 122 { 833 }, 123 { 778 }, 124 { 333 }, 125 { 333 }, 126 { 333 }, 127 { 500 }, 128 { 564 }, 129 { 250 }, 130 { 333 }, 131 { 250 }, 132 { 278 }, 133 { 500 }, 134 { 500 }, 135 { 500 }, 136 { 500 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 278 }, 144 { 278 }, 145 { 564 }, 146 { 564 }, 147 { 564 }, 148 { 444 }, 149 { 921 }, 150 { 722 }, 151 { 667 }, 152 { 667 }, 153 { 722 }, 154 { 611 }, 155 { 556 }, 156 { 722 }, 157 { 722 }, 158 { 333 }, 159 { 389 }, 160 { 722 }, 161 { 611 }, 162 { 889 }, 163 { 722 }, 164 { 722 }, 165 { 556 }, 166 { 722 }, 167 { 667 }, 168 { 556 }, 169 { 611 }, 170 { 722 }, 171 { 722 }, 172 { 944 }, 173 { 722 }, 174 { 722 }, 175 { 611 }, 176 { 333 }, 177 { 278 }, 178 { 333 }, 179 { 469 }, 180 { 500 }, 181 { 333 }, 182 { 444 }, 183 { 500 }, 184 { 444 }, 185 { 500}, 186 { 444}, 187 { 333}, 188 { 500}, 189 { 500}, 190 { 278}, 191 { 278}, 192 { 500}, 193 { 278}, 194 { 778}, 195 { 500}, 196 { 500}, 197 { 500}, 198 { 500}, 199 { 333}, 200 { 389}, 201 { 278}, 202 { 500}, 203 { 500}, 204 { 722}, 205 { 500}, 206 { 500}, 207 { 444}, 208 { 480}, 209 { 200}, 210 { 480}, 211 { 541}, 212 } }, 213 { "Times-Bold", { 214 { 250 }, 215 { 333 }, 216 { 555 }, 217 { 500 }, 218 { 500 }, 219 { 1000 }, 220 { 833 }, 221 { 333 }, 222 { 333 }, 223 { 333 }, 224 { 500 }, 225 { 570 }, 226 { 250 }, 227 { 333 }, 228 { 250 }, 229 { 278 }, 230 { 500 }, 231 { 500 }, 232 { 500 }, 233 { 500 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 333 }, 241 { 333 }, 242 { 570 }, 243 { 570 }, 244 { 570 }, 245 { 500 }, 246 { 930 }, 247 { 722 }, 248 { 667 }, 249 { 722 }, 250 { 722 }, 251 { 667 }, 252 { 611 }, 253 { 778 }, 254 { 778 }, 255 { 389 }, 256 { 500 }, 257 { 778 }, 258 { 667 }, 259 { 944 }, 260 { 722 }, 261 { 778 }, 262 { 611 }, 263 { 778 }, 264 { 722 }, 265 { 556 }, 266 { 667 }, 267 { 722 }, 268 { 722 }, 269 { 1000 }, 270 { 722 }, 271 { 722 }, 272 { 667 }, 273 { 333 }, 274 { 278 }, 275 { 333 }, 276 { 581 }, 277 { 500 }, 278 { 333 }, 279 { 500 }, 280 { 556 }, 281 { 444 }, 282 { 556 }, 283 { 444 }, 284 { 333 }, 285 { 500 }, 286 { 556 }, 287 { 278 }, 288 { 333 }, 289 { 556 }, 290 { 278 }, 291 { 833 }, 292 { 556 }, 293 { 500 }, 294 { 556 }, 295 { 556 }, 296 { 444 }, 297 { 389 }, 298 { 333 }, 299 { 556 }, 300 { 500 }, 301 { 722 }, 302 { 500 }, 303 { 500 }, 304 { 444 }, 305 { 394 }, 306 { 220 }, 307 { 394 }, 308 { 520 }, 309 } }, 310 { "Times-Italic", { 311 { 250 }, 312 { 333 }, 313 { 420 }, 314 { 500 }, 315 { 500 }, 316 { 833 }, 317 { 778 }, 318 { 333 }, 319 { 333 }, 320 { 333 }, 321 { 500 }, 322 { 675 }, 323 { 250 }, 324 { 333 }, 325 { 250 }, 326 { 278 }, 327 { 500 }, 328 { 500 }, 329 { 500 }, 330 { 500 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 333 }, 338 { 333 }, 339 { 675 }, 340 { 675 }, 341 { 675 }, 342 { 500 }, 343 { 920 }, 344 { 611 }, 345 { 611 }, 346 { 667 }, 347 { 722 }, 348 { 611 }, 349 { 611 }, 350 { 722 }, 351 { 722 }, 352 { 333 }, 353 { 444 }, 354 { 667 }, 355 { 556 }, 356 { 833 }, 357 { 667 }, 358 { 722 }, 359 { 611 }, 360 { 722 }, 361 { 611 }, 362 { 500 }, 363 { 556 }, 364 { 722 }, 365 { 611 }, 366 { 833 }, 367 { 611 }, 368 { 556 }, 369 { 556 }, 370 { 389 }, 371 { 278 }, 372 { 389 }, 373 { 422 }, 374 { 500 }, 375 { 333 }, 376 { 500 }, 377 { 500 }, 378 { 444 }, 379 { 500 }, 380 { 444 }, 381 { 278 }, 382 { 500 }, 383 { 500 }, 384 { 278 }, 385 { 278 }, 386 { 444 }, 387 { 278 }, 388 { 722 }, 389 { 500 }, 390 { 500 }, 391 { 500 }, 392 { 500 }, 393 { 389 }, 394 { 389 }, 395 { 278 }, 396 { 500 }, 397 { 444 }, 398 { 667 }, 399 { 444 }, 400 { 444 }, 401 { 389 }, 402 { 400 }, 403 { 275 }, 404 { 400 }, 405 { 541 }, 406 } }, 407 { "Times-BoldItalic", { 408 { 250 }, 409 { 389 }, 410 { 555 }, 411 { 500 }, 412 { 500 }, 413 { 833 }, 414 { 778 }, 415 { 333 }, 416 { 333 }, 417 { 333 }, 418 { 500 }, 419 { 570 }, 420 { 250 }, 421 { 333 }, 422 { 250 }, 423 { 278 }, 424 { 500 }, 425 { 500 }, 426 { 500 }, 427 { 500 }, 428 { 500 }, 429 { 500 }, 430 { 500 }, 431 { 500 }, 432 { 500 }, 433 { 500 }, 434 { 333 }, 435 { 333 }, 436 { 570 }, 437 { 570 }, 438 { 570 }, 439 { 500 }, 440 { 832 }, 441 { 667 }, 442 { 667 }, 443 { 667 }, 444 { 722 }, 445 { 667 }, 446 { 667 }, 447 { 722 }, 448 { 778 }, 449 { 389 }, 450 { 500 }, 451 { 667 }, 452 { 611 }, 453 { 889 }, 454 { 722 }, 455 { 722 }, 456 { 611 }, 457 { 722 }, 458 { 667 }, 459 { 556 }, 460 { 611 }, 461 { 722 }, 462 { 667 }, 463 { 889 }, 464 { 667 }, 465 { 611 }, 466 { 611 }, 467 { 333 }, 468 { 278 }, 469 { 333 }, 470 { 570 }, 471 { 500 }, 472 { 333 }, 473 { 500 }, 474 { 500 }, 475 { 444 }, 476 { 500 }, 477 { 444 }, 478 { 333 }, 479 { 500 }, 480 { 556 }, 481 { 278 }, 482 { 278 }, 483 { 500 }, 484 { 278 }, 485 { 778 }, 486 { 556 }, 487 { 500 }, 488 { 500 }, 489 { 500 }, 490 { 389 }, 491 { 389 }, 492 { 278 }, 493 { 556 }, 494 { 444 }, 495 { 667 }, 496 { 500 }, 497 { 444 }, 498 { 389 }, 499 { 348 }, 500 { 220 }, 501 { 348 }, 502 { 570 }, 503 } }, 504 }; 505 506 void * 507 pdf_alloc(const struct mchars *mchars, const struct manoutput *outopts) 508 { 509 struct termp *p; 510 511 if (NULL != (p = pspdf_alloc(mchars, outopts))) 512 p->type = TERMTYPE_PDF; 513 514 return(p); 515 } 516 517 void * 518 ps_alloc(const struct mchars *mchars, const struct manoutput *outopts) 519 { 520 struct termp *p; 521 522 if (NULL != (p = pspdf_alloc(mchars, outopts))) 523 p->type = TERMTYPE_PS; 524 525 return(p); 526 } 527 528 static struct termp * 529 pspdf_alloc(const struct mchars *mchars, const struct manoutput *outopts) 530 { 531 struct termp *p; 532 unsigned int pagex, pagey; 533 size_t marginx, marginy, lineheight; 534 const char *pp; 535 536 p = mandoc_calloc(1, sizeof(struct termp)); 537 p->symtab = mchars; 538 p->enc = TERMENC_ASCII; 539 p->fontq = mandoc_reallocarray(NULL, 540 (p->fontsz = 8), sizeof(enum termfont)); 541 p->fontq[0] = p->fontl = TERMFONT_NONE; 542 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 543 544 p->advance = ps_advance; 545 p->begin = ps_begin; 546 p->end = ps_end; 547 p->endline = ps_endline; 548 p->hspan = ps_hspan; 549 p->letter = ps_letter; 550 p->setwidth = ps_setwidth; 551 p->width = ps_width; 552 553 /* Default to US letter (millimetres). */ 554 555 pagex = 216; 556 pagey = 279; 557 558 /* 559 * The ISO-269 paper sizes can be calculated automatically, but 560 * it would require bringing in -lm for pow() and I'd rather not 561 * do that. So just do it the easy way for now. Since this 562 * only happens once, I'm not terribly concerned. 563 */ 564 565 pp = outopts->paper; 566 if (pp && strcasecmp(pp, "letter")) { 567 if (0 == strcasecmp(pp, "a3")) { 568 pagex = 297; 569 pagey = 420; 570 } else if (0 == strcasecmp(pp, "a4")) { 571 pagex = 210; 572 pagey = 297; 573 } else if (0 == strcasecmp(pp, "a5")) { 574 pagex = 148; 575 pagey = 210; 576 } else if (0 == strcasecmp(pp, "legal")) { 577 pagex = 216; 578 pagey = 356; 579 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 580 fprintf(stderr, "%s: Unknown paper\n", pp); 581 } 582 583 /* 584 * This MUST be defined before any PNT2AFM or AFM2PNT 585 * calculations occur. 586 */ 587 588 p->ps->scale = 11; 589 590 /* Remember millimetres -> AFM units. */ 591 592 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 593 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 594 595 /* Margins are 1/9 the page x and y. */ 596 597 marginx = (size_t)((double)pagex / 9.0); 598 marginy = (size_t)((double)pagey / 9.0); 599 600 /* Line-height is 1.4em. */ 601 602 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 603 604 p->ps->width = p->ps->lastwidth = (size_t)pagex; 605 p->ps->height = (size_t)pagey; 606 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 607 p->ps->top = pagey - marginy; 608 p->ps->footer = (marginy / 2) - (lineheight / 2); 609 p->ps->bottom = marginy; 610 p->ps->left = marginx; 611 p->ps->lineheight = lineheight; 612 613 p->defrmargin = pagex - (marginx * 2); 614 return(p); 615 } 616 617 static void 618 ps_setwidth(struct termp *p, int iop, int width) 619 { 620 size_t lastwidth; 621 622 lastwidth = p->ps->width; 623 if (iop > 0) 624 p->ps->width += width; 625 else if (iop == 0) 626 p->ps->width = width ? (size_t)width : p->ps->lastwidth; 627 else if (p->ps->width > (size_t)width) 628 p->ps->width -= width; 629 else 630 p->ps->width = 0; 631 p->ps->lastwidth = lastwidth; 632 } 633 634 void 635 pspdf_free(void *arg) 636 { 637 struct termp *p; 638 639 p = (struct termp *)arg; 640 641 if (p->ps->psmarg) 642 free(p->ps->psmarg); 643 if (p->ps->pdfobjs) 644 free(p->ps->pdfobjs); 645 646 free(p->ps); 647 term_free(p); 648 } 649 650 static void 651 ps_printf(struct termp *p, const char *fmt, ...) 652 { 653 va_list ap; 654 int pos, len; 655 656 va_start(ap, fmt); 657 658 /* 659 * If we're running in regular mode, then pipe directly into 660 * vprintf(). If we're processing margins, then push the data 661 * into our growable margin buffer. 662 */ 663 664 if ( ! (PS_MARGINS & p->ps->flags)) { 665 len = vprintf(fmt, ap); 666 va_end(ap); 667 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 668 return; 669 } 670 671 /* 672 * XXX: I assume that the in-margin print won't exceed 673 * PS_BUFSLOP (128 bytes), which is reasonable but still an 674 * assumption that will cause pukeage if it's not the case. 675 */ 676 677 ps_growbuf(p, PS_BUFSLOP); 678 679 pos = (int)p->ps->psmargcur; 680 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 681 682 va_end(ap); 683 684 p->ps->psmargcur = strlen(p->ps->psmarg); 685 } 686 687 static void 688 ps_putchar(struct termp *p, char c) 689 { 690 int pos; 691 692 /* See ps_printf(). */ 693 694 if ( ! (PS_MARGINS & p->ps->flags)) { 695 putchar(c); 696 p->ps->pdfbytes++; 697 return; 698 } 699 700 ps_growbuf(p, 2); 701 702 pos = (int)p->ps->psmargcur++; 703 p->ps->psmarg[pos++] = c; 704 p->ps->psmarg[pos] = '\0'; 705 } 706 707 static void 708 pdf_obj(struct termp *p, size_t obj) 709 { 710 711 assert(obj > 0); 712 713 if ((obj - 1) >= p->ps->pdfobjsz) { 714 p->ps->pdfobjsz = obj + 128; 715 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 716 p->ps->pdfobjsz, sizeof(size_t)); 717 } 718 719 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 720 ps_printf(p, "%zu 0 obj\n", obj); 721 } 722 723 static void 724 ps_closepage(struct termp *p) 725 { 726 int i; 727 size_t len, base; 728 729 /* 730 * Close out a page that we've already flushed to output. In 731 * PostScript, we simply note that the page must be showed. In 732 * PDF, we must now create the Length, Resource, and Page node 733 * for the page contents. 734 */ 735 736 assert(p->ps->psmarg && p->ps->psmarg[0]); 737 ps_printf(p, "%s", p->ps->psmarg); 738 739 if (TERMTYPE_PS != p->type) { 740 ps_printf(p, "ET\n"); 741 742 len = p->ps->pdfbytes - p->ps->pdflastpg; 743 base = p->ps->pages * 4 + p->ps->pdfbody; 744 745 ps_printf(p, "endstream\nendobj\n"); 746 747 /* Length of content. */ 748 pdf_obj(p, base + 1); 749 ps_printf(p, "%zu\nendobj\n", len); 750 751 /* Resource for content. */ 752 pdf_obj(p, base + 2); 753 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 754 ps_printf(p, "/Font <<\n"); 755 for (i = 0; i < (int)TERMFONT__MAX; i++) 756 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 757 ps_printf(p, ">>\n>>\n"); 758 759 /* Page node. */ 760 pdf_obj(p, base + 3); 761 ps_printf(p, "<<\n"); 762 ps_printf(p, "/Type /Page\n"); 763 ps_printf(p, "/Parent 2 0 R\n"); 764 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 765 ps_printf(p, "/Contents %zu 0 R\n", base); 766 ps_printf(p, ">>\nendobj\n"); 767 } else 768 ps_printf(p, "showpage\n"); 769 770 p->ps->pages++; 771 p->ps->psrow = p->ps->top; 772 assert( ! (PS_NEWPAGE & p->ps->flags)); 773 p->ps->flags |= PS_NEWPAGE; 774 } 775 776 static void 777 ps_end(struct termp *p) 778 { 779 size_t i, xref, base; 780 781 /* 782 * At the end of the file, do one last showpage. This is the 783 * same behaviour as groff(1) and works for multiple pages as 784 * well as just one. 785 */ 786 787 if ( ! (PS_NEWPAGE & p->ps->flags)) { 788 assert(0 == p->ps->flags); 789 assert('\0' == p->ps->last); 790 ps_closepage(p); 791 } 792 793 if (TERMTYPE_PS == p->type) { 794 ps_printf(p, "%%%%Trailer\n"); 795 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 796 ps_printf(p, "%%%%EOF\n"); 797 return; 798 } 799 800 pdf_obj(p, 2); 801 ps_printf(p, "<<\n/Type /Pages\n"); 802 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 803 (size_t)AFM2PNT(p, p->ps->width), 804 (size_t)AFM2PNT(p, p->ps->height)); 805 806 ps_printf(p, "/Count %zu\n", p->ps->pages); 807 ps_printf(p, "/Kids ["); 808 809 for (i = 0; i < p->ps->pages; i++) 810 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 811 812 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 813 814 ps_printf(p, "]\n>>\nendobj\n"); 815 pdf_obj(p, base); 816 ps_printf(p, "<<\n"); 817 ps_printf(p, "/Type /Catalog\n"); 818 ps_printf(p, "/Pages 2 0 R\n"); 819 ps_printf(p, ">>\n"); 820 xref = p->ps->pdfbytes; 821 ps_printf(p, "xref\n"); 822 ps_printf(p, "0 %zu\n", base + 1); 823 ps_printf(p, "0000000000 65535 f \n"); 824 825 for (i = 0; i < base; i++) 826 ps_printf(p, "%.10zu 00000 n \n", 827 p->ps->pdfobjs[(int)i]); 828 829 ps_printf(p, "trailer\n"); 830 ps_printf(p, "<<\n"); 831 ps_printf(p, "/Size %zu\n", base + 1); 832 ps_printf(p, "/Root %zu 0 R\n", base); 833 ps_printf(p, "/Info 1 0 R\n"); 834 ps_printf(p, ">>\n"); 835 ps_printf(p, "startxref\n"); 836 ps_printf(p, "%zu\n", xref); 837 ps_printf(p, "%%%%EOF\n"); 838 } 839 840 static void 841 ps_begin(struct termp *p) 842 { 843 int i; 844 845 /* 846 * Print margins into margin buffer. Nothing gets output to the 847 * screen yet, so we don't need to initialise the primary state. 848 */ 849 850 if (p->ps->psmarg) { 851 assert(p->ps->psmargsz); 852 p->ps->psmarg[0] = '\0'; 853 } 854 855 /*p->ps->pdfbytes = 0;*/ 856 p->ps->psmargcur = 0; 857 p->ps->flags = PS_MARGINS; 858 p->ps->pscol = p->ps->left; 859 p->ps->psrow = p->ps->header; 860 861 ps_setfont(p, TERMFONT_NONE); 862 863 (*p->headf)(p, p->argf); 864 (*p->endline)(p); 865 866 p->ps->pscol = p->ps->left; 867 p->ps->psrow = p->ps->footer; 868 869 (*p->footf)(p, p->argf); 870 (*p->endline)(p); 871 872 p->ps->flags &= ~PS_MARGINS; 873 874 assert(0 == p->ps->flags); 875 assert(p->ps->psmarg); 876 assert('\0' != p->ps->psmarg[0]); 877 878 /* 879 * Print header and initialise page state. Following this, 880 * stuff gets printed to the screen, so make sure we're sane. 881 */ 882 883 if (TERMTYPE_PS == p->type) { 884 ps_printf(p, "%%!PS-Adobe-3.0\n"); 885 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 886 ps_printf(p, "%%%%Orientation: Portrait\n"); 887 ps_printf(p, "%%%%Pages: (atend)\n"); 888 ps_printf(p, "%%%%PageOrder: Ascend\n"); 889 ps_printf(p, "%%%%DocumentMedia: " 890 "Default %zu %zu 0 () ()\n", 891 (size_t)AFM2PNT(p, p->ps->width), 892 (size_t)AFM2PNT(p, p->ps->height)); 893 ps_printf(p, "%%%%DocumentNeededResources: font"); 894 895 for (i = 0; i < (int)TERMFONT__MAX; i++) 896 ps_printf(p, " %s", fonts[i].name); 897 898 ps_printf(p, "\n%%%%EndComments\n"); 899 } else { 900 ps_printf(p, "%%PDF-1.1\n"); 901 pdf_obj(p, 1); 902 ps_printf(p, "<<\n"); 903 ps_printf(p, ">>\n"); 904 ps_printf(p, "endobj\n"); 905 906 for (i = 0; i < (int)TERMFONT__MAX; i++) { 907 pdf_obj(p, (size_t)i + 3); 908 ps_printf(p, "<<\n"); 909 ps_printf(p, "/Type /Font\n"); 910 ps_printf(p, "/Subtype /Type1\n"); 911 ps_printf(p, "/Name /F%d\n", i); 912 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 913 ps_printf(p, ">>\n"); 914 } 915 } 916 917 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 918 p->ps->pscol = p->ps->left; 919 p->ps->psrow = p->ps->top; 920 p->ps->flags |= PS_NEWPAGE; 921 ps_setfont(p, TERMFONT_NONE); 922 } 923 924 static void 925 ps_pletter(struct termp *p, int c) 926 { 927 int f; 928 929 /* 930 * If we haven't opened a page context, then output that we're 931 * in a new page and make sure the font is correctly set. 932 */ 933 934 if (PS_NEWPAGE & p->ps->flags) { 935 if (TERMTYPE_PS == p->type) { 936 ps_printf(p, "%%%%Page: %zu %zu\n", 937 p->ps->pages + 1, p->ps->pages + 1); 938 ps_printf(p, "/%s %zu selectfont\n", 939 fonts[(int)p->ps->lastf].name, 940 p->ps->scale); 941 } else { 942 pdf_obj(p, p->ps->pdfbody + 943 p->ps->pages * 4); 944 ps_printf(p, "<<\n"); 945 ps_printf(p, "/Length %zu 0 R\n", 946 p->ps->pdfbody + 1 + p->ps->pages * 4); 947 ps_printf(p, ">>\nstream\n"); 948 } 949 p->ps->pdflastpg = p->ps->pdfbytes; 950 p->ps->flags &= ~PS_NEWPAGE; 951 } 952 953 /* 954 * If we're not in a PostScript "word" context, then open one 955 * now at the current cursor. 956 */ 957 958 if ( ! (PS_INLINE & p->ps->flags)) { 959 if (TERMTYPE_PS != p->type) { 960 ps_printf(p, "BT\n/F%d %zu Tf\n", 961 (int)p->ps->lastf, p->ps->scale); 962 ps_printf(p, "%.3f %.3f Td\n(", 963 AFM2PNT(p, p->ps->pscol), 964 AFM2PNT(p, p->ps->psrow)); 965 } else 966 ps_printf(p, "%.3f %.3f moveto\n(", 967 AFM2PNT(p, p->ps->pscol), 968 AFM2PNT(p, p->ps->psrow)); 969 p->ps->flags |= PS_INLINE; 970 } 971 972 assert( ! (PS_NEWPAGE & p->ps->flags)); 973 974 /* 975 * We need to escape these characters as per the PostScript 976 * specification. We would also escape non-graphable characters 977 * (like tabs), but none of them would get to this point and 978 * it's superfluous to abort() on them. 979 */ 980 981 switch (c) { 982 case '(': 983 /* FALLTHROUGH */ 984 case ')': 985 /* FALLTHROUGH */ 986 case '\\': 987 ps_putchar(p, '\\'); 988 break; 989 default: 990 break; 991 } 992 993 /* Write the character and adjust where we are on the page. */ 994 995 f = (int)p->ps->lastf; 996 997 if (c <= 32 || c - 32 >= MAXCHAR) 998 c = 32; 999 1000 ps_putchar(p, (char)c); 1001 c -= 32; 1002 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 1003 } 1004 1005 static void 1006 ps_pclose(struct termp *p) 1007 { 1008 1009 /* 1010 * Spit out that we're exiting a word context (this is a 1011 * "partial close" because we don't check the last-char buffer 1012 * or anything). 1013 */ 1014 1015 if ( ! (PS_INLINE & p->ps->flags)) 1016 return; 1017 1018 if (TERMTYPE_PS != p->type) { 1019 ps_printf(p, ") Tj\nET\n"); 1020 } else 1021 ps_printf(p, ") show\n"); 1022 1023 p->ps->flags &= ~PS_INLINE; 1024 } 1025 1026 static void 1027 ps_fclose(struct termp *p) 1028 { 1029 1030 /* 1031 * Strong closure: if we have a last-char, spit it out after 1032 * checking that we're in the right font mode. This will of 1033 * course open a new scope, if applicable. 1034 * 1035 * Following this, close out any scope that's open. 1036 */ 1037 1038 if (p->ps->last != '\0') { 1039 assert( ! (p->ps->flags & PS_BACKSP)); 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 ps_pletter(p, p->ps->last); 1046 p->ps->last = '\0'; 1047 } 1048 1049 if ( ! (PS_INLINE & p->ps->flags)) 1050 return; 1051 1052 ps_pclose(p); 1053 } 1054 1055 static void 1056 ps_letter(struct termp *p, int arg) 1057 { 1058 size_t savecol, wx; 1059 char c; 1060 1061 c = arg >= 128 || arg <= 0 ? '?' : arg; 1062 1063 /* 1064 * When receiving a backspace, merely flag it. 1065 * We don't know yet whether it is 1066 * a font instruction or an overstrike. 1067 */ 1068 1069 if (c == '\b') { 1070 assert(p->ps->last != '\0'); 1071 assert( ! (p->ps->flags & PS_BACKSP)); 1072 p->ps->flags |= PS_BACKSP; 1073 return; 1074 } 1075 1076 /* 1077 * Decode font instructions. 1078 */ 1079 1080 if (p->ps->flags & PS_BACKSP) { 1081 if (p->ps->last == '_') { 1082 switch (p->ps->nextf) { 1083 case TERMFONT_BI: 1084 break; 1085 case TERMFONT_BOLD: 1086 p->ps->nextf = TERMFONT_BI; 1087 break; 1088 default: 1089 p->ps->nextf = TERMFONT_UNDER; 1090 } 1091 p->ps->last = c; 1092 p->ps->flags &= ~PS_BACKSP; 1093 return; 1094 } 1095 if (p->ps->last == c) { 1096 switch (p->ps->nextf) { 1097 case TERMFONT_BI: 1098 break; 1099 case TERMFONT_UNDER: 1100 p->ps->nextf = TERMFONT_BI; 1101 break; 1102 default: 1103 p->ps->nextf = TERMFONT_BOLD; 1104 } 1105 p->ps->flags &= ~PS_BACKSP; 1106 return; 1107 } 1108 1109 /* 1110 * This is not a font instruction, but rather 1111 * the next character. Prepare for overstrike. 1112 */ 1113 1114 savecol = p->ps->pscol; 1115 } else 1116 savecol = SIZE_MAX; 1117 1118 /* 1119 * We found the next character, so the font instructions 1120 * for the previous one are complete. 1121 * Use them and print it. 1122 */ 1123 1124 if (p->ps->last != '\0') { 1125 if (p->ps->nextf != p->ps->lastf) { 1126 ps_pclose(p); 1127 ps_setfont(p, p->ps->nextf); 1128 } 1129 p->ps->nextf = TERMFONT_NONE; 1130 1131 /* 1132 * For an overstrike, if a previous character 1133 * was wider, advance to center the new one. 1134 */ 1135 1136 if (p->ps->pscolnext) { 1137 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; 1138 if (p->ps->pscol + wx < p->ps->pscolnext) 1139 p->ps->pscol = (p->ps->pscol + 1140 p->ps->pscolnext - wx) / 2; 1141 } 1142 1143 ps_pletter(p, p->ps->last); 1144 1145 /* 1146 * For an overstrike, if a previous character 1147 * was wider, advance to the end of the old one. 1148 */ 1149 1150 if (p->ps->pscol < p->ps->pscolnext) { 1151 ps_pclose(p); 1152 p->ps->pscol = p->ps->pscolnext; 1153 } 1154 } 1155 1156 /* 1157 * Do not print the current character yet because font 1158 * instructions might follow; only remember it. 1159 * For the first character, nothing else is done. 1160 * The final character will get printed from ps_fclose(). 1161 */ 1162 1163 p->ps->last = c; 1164 1165 /* 1166 * For an overstrike, back up to the previous position. 1167 * If the previous character is wider than any it overstrikes, 1168 * remember the current position, because it might also be 1169 * wider than all that will overstrike it. 1170 */ 1171 1172 if (savecol != SIZE_MAX) { 1173 if (p->ps->pscolnext < p->ps->pscol) 1174 p->ps->pscolnext = p->ps->pscol; 1175 ps_pclose(p); 1176 p->ps->pscol = savecol; 1177 p->ps->flags &= ~PS_BACKSP; 1178 } else 1179 p->ps->pscolnext = 0; 1180 } 1181 1182 static void 1183 ps_advance(struct termp *p, size_t len) 1184 { 1185 1186 /* 1187 * Advance some spaces. This can probably be made smarter, 1188 * i.e., to have multiple space-separated words in the same 1189 * scope, but this is easier: just close out the current scope 1190 * and readjust our column settings. 1191 */ 1192 1193 ps_fclose(p); 1194 p->ps->pscol += len; 1195 } 1196 1197 static void 1198 ps_endline(struct termp *p) 1199 { 1200 1201 /* Close out any scopes we have open: we're at eoln. */ 1202 1203 ps_fclose(p); 1204 1205 /* 1206 * If we're in the margin, don't try to recalculate our current 1207 * row. XXX: if the column tries to be fancy with multiple 1208 * lines, we'll do nasty stuff. 1209 */ 1210 1211 if (PS_MARGINS & p->ps->flags) 1212 return; 1213 1214 /* Left-justify. */ 1215 1216 p->ps->pscol = p->ps->left; 1217 1218 /* If we haven't printed anything, return. */ 1219 1220 if (PS_NEWPAGE & p->ps->flags) 1221 return; 1222 1223 /* 1224 * Put us down a line. If we're at the page bottom, spit out a 1225 * showpage and restart our row. 1226 */ 1227 1228 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1229 p->ps->psrow -= p->ps->lineheight; 1230 return; 1231 } 1232 1233 ps_closepage(p); 1234 } 1235 1236 static void 1237 ps_setfont(struct termp *p, enum termfont f) 1238 { 1239 1240 assert(f < TERMFONT__MAX); 1241 p->ps->lastf = f; 1242 1243 /* 1244 * If we're still at the top of the page, let the font-setting 1245 * be delayed until we actually have stuff to print. 1246 */ 1247 1248 if (PS_NEWPAGE & p->ps->flags) 1249 return; 1250 1251 if (TERMTYPE_PS == p->type) 1252 ps_printf(p, "/%s %zu selectfont\n", 1253 fonts[(int)f].name, p->ps->scale); 1254 else 1255 ps_printf(p, "/F%d %zu Tf\n", 1256 (int)f, p->ps->scale); 1257 } 1258 1259 static size_t 1260 ps_width(const struct termp *p, int c) 1261 { 1262 1263 if (c <= 32 || c - 32 >= MAXCHAR) 1264 c = 0; 1265 else 1266 c -= 32; 1267 1268 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1269 } 1270 1271 static int 1272 ps_hspan(const struct termp *p, const struct roffsu *su) 1273 { 1274 double r; 1275 1276 /* 1277 * All of these measurements are derived by converting from the 1278 * native measurement to AFM units. 1279 */ 1280 switch (su->unit) { 1281 case SCALE_BU: 1282 /* 1283 * Traditionally, the default unit is fixed to the 1284 * output media. So this would refer to the point. In 1285 * mandoc(1), however, we stick to the default terminal 1286 * scaling unit so that output is the same regardless 1287 * the media. 1288 */ 1289 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1290 break; 1291 case SCALE_CM: 1292 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1293 break; 1294 case SCALE_EM: 1295 r = su->scale * 1296 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1297 break; 1298 case SCALE_EN: 1299 r = su->scale * 1300 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1301 break; 1302 case SCALE_IN: 1303 r = PNT2AFM(p, su->scale * 72.0); 1304 break; 1305 case SCALE_MM: 1306 r = su->scale * 1307 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1308 break; 1309 case SCALE_PC: 1310 r = PNT2AFM(p, su->scale * 12.0); 1311 break; 1312 case SCALE_PT: 1313 r = PNT2AFM(p, su->scale * 1.0); 1314 break; 1315 case SCALE_VS: 1316 r = su->scale * p->ps->lineheight; 1317 break; 1318 default: 1319 r = su->scale; 1320 break; 1321 } 1322 1323 return(r * 24.0); 1324 } 1325 1326 static void 1327 ps_growbuf(struct termp *p, size_t sz) 1328 { 1329 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1330 return; 1331 1332 if (sz < PS_BUFSLOP) 1333 sz = PS_BUFSLOP; 1334 1335 p->ps->psmargsz += sz; 1336 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1337 } 1338