1 /* $OpenBSD: term_ps.c,v 1.49 2017/06/07 17:38:08 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 <sys/types.h> 19 20 #include <assert.h> 21 #include <err.h> 22 #include <stdarg.h> 23 #include <stdint.h> 24 #include <stdio.h> 25 #include <stdlib.h> 26 #include <string.h> 27 #include <unistd.h> 28 29 #include "mandoc_aux.h" 30 #include "out.h" 31 #include "term.h" 32 #include "manconf.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 int 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_growbuf(struct termp *, size_t); 98 static void ps_letter(struct termp *, int); 99 static void ps_pclose(struct termp *); 100 static void ps_plast(struct termp *); 101 static void ps_pletter(struct termp *, int); 102 static void ps_printf(struct termp *, const char *, ...) 103 __attribute__((__format__ (__printf__, 2, 3))); 104 static void ps_putchar(struct termp *, char); 105 static void ps_setfont(struct termp *, enum termfont); 106 static void ps_setwidth(struct termp *, int, int); 107 static struct termp *pspdf_alloc(const struct manoutput *); 108 static void pdf_obj(struct termp *, size_t); 109 110 /* 111 * We define, for the time being, three fonts: bold, oblique/italic, and 112 * normal (roman). The following table hard-codes the font metrics for 113 * ASCII, i.e., 32--127. 114 */ 115 116 static const struct font fonts[TERMFONT__MAX] = { 117 { "Times-Roman", { 118 { 250 }, 119 { 333 }, 120 { 408 }, 121 { 500 }, 122 { 500 }, 123 { 833 }, 124 { 778 }, 125 { 333 }, 126 { 333 }, 127 { 333 }, 128 { 500 }, 129 { 564 }, 130 { 250 }, 131 { 333 }, 132 { 250 }, 133 { 278 }, 134 { 500 }, 135 { 500 }, 136 { 500 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 500 }, 144 { 278 }, 145 { 278 }, 146 { 564 }, 147 { 564 }, 148 { 564 }, 149 { 444 }, 150 { 921 }, 151 { 722 }, 152 { 667 }, 153 { 667 }, 154 { 722 }, 155 { 611 }, 156 { 556 }, 157 { 722 }, 158 { 722 }, 159 { 333 }, 160 { 389 }, 161 { 722 }, 162 { 611 }, 163 { 889 }, 164 { 722 }, 165 { 722 }, 166 { 556 }, 167 { 722 }, 168 { 667 }, 169 { 556 }, 170 { 611 }, 171 { 722 }, 172 { 722 }, 173 { 944 }, 174 { 722 }, 175 { 722 }, 176 { 611 }, 177 { 333 }, 178 { 278 }, 179 { 333 }, 180 { 469 }, 181 { 500 }, 182 { 333 }, 183 { 444 }, 184 { 500 }, 185 { 444 }, 186 { 500}, 187 { 444}, 188 { 333}, 189 { 500}, 190 { 500}, 191 { 278}, 192 { 278}, 193 { 500}, 194 { 278}, 195 { 778}, 196 { 500}, 197 { 500}, 198 { 500}, 199 { 500}, 200 { 333}, 201 { 389}, 202 { 278}, 203 { 500}, 204 { 500}, 205 { 722}, 206 { 500}, 207 { 500}, 208 { 444}, 209 { 480}, 210 { 200}, 211 { 480}, 212 { 541}, 213 } }, 214 { "Times-Bold", { 215 { 250 }, 216 { 333 }, 217 { 555 }, 218 { 500 }, 219 { 500 }, 220 { 1000 }, 221 { 833 }, 222 { 333 }, 223 { 333 }, 224 { 333 }, 225 { 500 }, 226 { 570 }, 227 { 250 }, 228 { 333 }, 229 { 250 }, 230 { 278 }, 231 { 500 }, 232 { 500 }, 233 { 500 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 500 }, 241 { 333 }, 242 { 333 }, 243 { 570 }, 244 { 570 }, 245 { 570 }, 246 { 500 }, 247 { 930 }, 248 { 722 }, 249 { 667 }, 250 { 722 }, 251 { 722 }, 252 { 667 }, 253 { 611 }, 254 { 778 }, 255 { 778 }, 256 { 389 }, 257 { 500 }, 258 { 778 }, 259 { 667 }, 260 { 944 }, 261 { 722 }, 262 { 778 }, 263 { 611 }, 264 { 778 }, 265 { 722 }, 266 { 556 }, 267 { 667 }, 268 { 722 }, 269 { 722 }, 270 { 1000 }, 271 { 722 }, 272 { 722 }, 273 { 667 }, 274 { 333 }, 275 { 278 }, 276 { 333 }, 277 { 581 }, 278 { 500 }, 279 { 333 }, 280 { 500 }, 281 { 556 }, 282 { 444 }, 283 { 556 }, 284 { 444 }, 285 { 333 }, 286 { 500 }, 287 { 556 }, 288 { 278 }, 289 { 333 }, 290 { 556 }, 291 { 278 }, 292 { 833 }, 293 { 556 }, 294 { 500 }, 295 { 556 }, 296 { 556 }, 297 { 444 }, 298 { 389 }, 299 { 333 }, 300 { 556 }, 301 { 500 }, 302 { 722 }, 303 { 500 }, 304 { 500 }, 305 { 444 }, 306 { 394 }, 307 { 220 }, 308 { 394 }, 309 { 520 }, 310 } }, 311 { "Times-Italic", { 312 { 250 }, 313 { 333 }, 314 { 420 }, 315 { 500 }, 316 { 500 }, 317 { 833 }, 318 { 778 }, 319 { 333 }, 320 { 333 }, 321 { 333 }, 322 { 500 }, 323 { 675 }, 324 { 250 }, 325 { 333 }, 326 { 250 }, 327 { 278 }, 328 { 500 }, 329 { 500 }, 330 { 500 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 500 }, 338 { 333 }, 339 { 333 }, 340 { 675 }, 341 { 675 }, 342 { 675 }, 343 { 500 }, 344 { 920 }, 345 { 611 }, 346 { 611 }, 347 { 667 }, 348 { 722 }, 349 { 611 }, 350 { 611 }, 351 { 722 }, 352 { 722 }, 353 { 333 }, 354 { 444 }, 355 { 667 }, 356 { 556 }, 357 { 833 }, 358 { 667 }, 359 { 722 }, 360 { 611 }, 361 { 722 }, 362 { 611 }, 363 { 500 }, 364 { 556 }, 365 { 722 }, 366 { 611 }, 367 { 833 }, 368 { 611 }, 369 { 556 }, 370 { 556 }, 371 { 389 }, 372 { 278 }, 373 { 389 }, 374 { 422 }, 375 { 500 }, 376 { 333 }, 377 { 500 }, 378 { 500 }, 379 { 444 }, 380 { 500 }, 381 { 444 }, 382 { 278 }, 383 { 500 }, 384 { 500 }, 385 { 278 }, 386 { 278 }, 387 { 444 }, 388 { 278 }, 389 { 722 }, 390 { 500 }, 391 { 500 }, 392 { 500 }, 393 { 500 }, 394 { 389 }, 395 { 389 }, 396 { 278 }, 397 { 500 }, 398 { 444 }, 399 { 667 }, 400 { 444 }, 401 { 444 }, 402 { 389 }, 403 { 400 }, 404 { 275 }, 405 { 400 }, 406 { 541 }, 407 } }, 408 { "Times-BoldItalic", { 409 { 250 }, 410 { 389 }, 411 { 555 }, 412 { 500 }, 413 { 500 }, 414 { 833 }, 415 { 778 }, 416 { 333 }, 417 { 333 }, 418 { 333 }, 419 { 500 }, 420 { 570 }, 421 { 250 }, 422 { 333 }, 423 { 250 }, 424 { 278 }, 425 { 500 }, 426 { 500 }, 427 { 500 }, 428 { 500 }, 429 { 500 }, 430 { 500 }, 431 { 500 }, 432 { 500 }, 433 { 500 }, 434 { 500 }, 435 { 333 }, 436 { 333 }, 437 { 570 }, 438 { 570 }, 439 { 570 }, 440 { 500 }, 441 { 832 }, 442 { 667 }, 443 { 667 }, 444 { 667 }, 445 { 722 }, 446 { 667 }, 447 { 667 }, 448 { 722 }, 449 { 778 }, 450 { 389 }, 451 { 500 }, 452 { 667 }, 453 { 611 }, 454 { 889 }, 455 { 722 }, 456 { 722 }, 457 { 611 }, 458 { 722 }, 459 { 667 }, 460 { 556 }, 461 { 611 }, 462 { 722 }, 463 { 667 }, 464 { 889 }, 465 { 667 }, 466 { 611 }, 467 { 611 }, 468 { 333 }, 469 { 278 }, 470 { 333 }, 471 { 570 }, 472 { 500 }, 473 { 333 }, 474 { 500 }, 475 { 500 }, 476 { 444 }, 477 { 500 }, 478 { 444 }, 479 { 333 }, 480 { 500 }, 481 { 556 }, 482 { 278 }, 483 { 278 }, 484 { 500 }, 485 { 278 }, 486 { 778 }, 487 { 556 }, 488 { 500 }, 489 { 500 }, 490 { 500 }, 491 { 389 }, 492 { 389 }, 493 { 278 }, 494 { 556 }, 495 { 444 }, 496 { 667 }, 497 { 500 }, 498 { 444 }, 499 { 389 }, 500 { 348 }, 501 { 220 }, 502 { 348 }, 503 { 570 }, 504 } }, 505 }; 506 507 void * 508 pdf_alloc(const struct manoutput *outopts) 509 { 510 struct termp *p; 511 512 if (NULL != (p = pspdf_alloc(outopts))) 513 p->type = TERMTYPE_PDF; 514 515 return p; 516 } 517 518 void * 519 ps_alloc(const struct manoutput *outopts) 520 { 521 struct termp *p; 522 523 if (NULL != (p = pspdf_alloc(outopts))) 524 p->type = TERMTYPE_PS; 525 526 return p; 527 } 528 529 static struct termp * 530 pspdf_alloc(const struct manoutput *outopts) 531 { 532 struct termp *p; 533 unsigned int pagex, pagey; 534 size_t marginx, marginy, lineheight; 535 const char *pp; 536 537 p = mandoc_calloc(1, sizeof(*p)); 538 p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol)); 539 p->maxtcol = 1; 540 541 p->enc = TERMENC_ASCII; 542 p->fontq = mandoc_reallocarray(NULL, 543 (p->fontsz = 8), sizeof(*p->fontq)); 544 p->fontq[0] = p->fontl = TERMFONT_NONE; 545 p->ps = mandoc_calloc(1, sizeof(*p->ps)); 546 547 p->advance = ps_advance; 548 p->begin = ps_begin; 549 p->end = ps_end; 550 p->endline = ps_endline; 551 p->hspan = ps_hspan; 552 p->letter = ps_letter; 553 p->setwidth = ps_setwidth; 554 p->width = ps_width; 555 556 /* Default to US letter (millimetres). */ 557 558 pagex = 216; 559 pagey = 279; 560 561 /* 562 * The ISO-269 paper sizes can be calculated automatically, but 563 * it would require bringing in -lm for pow() and I'd rather not 564 * do that. So just do it the easy way for now. Since this 565 * only happens once, I'm not terribly concerned. 566 */ 567 568 pp = outopts->paper; 569 if (pp && strcasecmp(pp, "letter")) { 570 if (0 == strcasecmp(pp, "a3")) { 571 pagex = 297; 572 pagey = 420; 573 } else if (0 == strcasecmp(pp, "a4")) { 574 pagex = 210; 575 pagey = 297; 576 } else if (0 == strcasecmp(pp, "a5")) { 577 pagex = 148; 578 pagey = 210; 579 } else if (0 == strcasecmp(pp, "legal")) { 580 pagex = 216; 581 pagey = 356; 582 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 583 warnx("%s: Unknown paper", pp); 584 } 585 586 /* 587 * This MUST be defined before any PNT2AFM or AFM2PNT 588 * calculations occur. 589 */ 590 591 p->ps->scale = 11; 592 593 /* Remember millimetres -> AFM units. */ 594 595 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 596 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 597 598 /* Margins are 1/9 the page x and y. */ 599 600 marginx = (size_t)((double)pagex / 9.0); 601 marginy = (size_t)((double)pagey / 9.0); 602 603 /* Line-height is 1.4em. */ 604 605 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 606 607 p->ps->width = p->ps->lastwidth = (size_t)pagex; 608 p->ps->height = (size_t)pagey; 609 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 610 p->ps->top = pagey - marginy; 611 p->ps->footer = (marginy / 2) - (lineheight / 2); 612 p->ps->bottom = marginy; 613 p->ps->left = marginx; 614 p->ps->lineheight = lineheight; 615 616 p->defrmargin = pagex - (marginx * 2); 617 return p; 618 } 619 620 static void 621 ps_setwidth(struct termp *p, int iop, int width) 622 { 623 size_t lastwidth; 624 625 lastwidth = p->ps->width; 626 if (iop > 0) 627 p->ps->width += width; 628 else if (iop == 0) 629 p->ps->width = width ? (size_t)width : p->ps->lastwidth; 630 else if (p->ps->width > (size_t)width) 631 p->ps->width -= width; 632 else 633 p->ps->width = 0; 634 p->ps->lastwidth = lastwidth; 635 } 636 637 void 638 pspdf_free(void *arg) 639 { 640 struct termp *p; 641 642 p = (struct termp *)arg; 643 644 free(p->ps->psmarg); 645 free(p->ps->pdfobjs); 646 647 free(p->ps); 648 term_free(p); 649 } 650 651 static void 652 ps_printf(struct termp *p, const char *fmt, ...) 653 { 654 va_list ap; 655 int pos, len; 656 657 va_start(ap, fmt); 658 659 /* 660 * If we're running in regular mode, then pipe directly into 661 * vprintf(). If we're processing margins, then push the data 662 * into our growable margin buffer. 663 */ 664 665 if ( ! (PS_MARGINS & p->ps->flags)) { 666 len = vprintf(fmt, ap); 667 va_end(ap); 668 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 669 return; 670 } 671 672 /* 673 * XXX: I assume that the in-margin print won't exceed 674 * PS_BUFSLOP (128 bytes), which is reasonable but still an 675 * assumption that will cause pukeage if it's not the case. 676 */ 677 678 ps_growbuf(p, PS_BUFSLOP); 679 680 pos = (int)p->ps->psmargcur; 681 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 682 683 va_end(ap); 684 685 p->ps->psmargcur = strlen(p->ps->psmarg); 686 } 687 688 static void 689 ps_putchar(struct termp *p, char c) 690 { 691 int pos; 692 693 /* See ps_printf(). */ 694 695 if ( ! (PS_MARGINS & p->ps->flags)) { 696 putchar(c); 697 p->ps->pdfbytes++; 698 return; 699 } 700 701 ps_growbuf(p, 2); 702 703 pos = (int)p->ps->psmargcur++; 704 p->ps->psmarg[pos++] = c; 705 p->ps->psmarg[pos] = '\0'; 706 } 707 708 static void 709 pdf_obj(struct termp *p, size_t obj) 710 { 711 712 assert(obj > 0); 713 714 if ((obj - 1) >= p->ps->pdfobjsz) { 715 p->ps->pdfobjsz = obj + 128; 716 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 717 p->ps->pdfobjsz, sizeof(size_t)); 718 } 719 720 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 721 ps_printf(p, "%zu 0 obj\n", obj); 722 } 723 724 static void 725 ps_closepage(struct termp *p) 726 { 727 int i; 728 size_t len, base; 729 730 /* 731 * Close out a page that we've already flushed to output. In 732 * PostScript, we simply note that the page must be showed. In 733 * PDF, we must now create the Length, Resource, and Page node 734 * for the page contents. 735 */ 736 737 assert(p->ps->psmarg && p->ps->psmarg[0]); 738 ps_printf(p, "%s", p->ps->psmarg); 739 740 if (TERMTYPE_PS != p->type) { 741 ps_printf(p, "ET\n"); 742 743 len = p->ps->pdfbytes - p->ps->pdflastpg; 744 base = p->ps->pages * 4 + p->ps->pdfbody; 745 746 ps_printf(p, "endstream\nendobj\n"); 747 748 /* Length of content. */ 749 pdf_obj(p, base + 1); 750 ps_printf(p, "%zu\nendobj\n", len); 751 752 /* Resource for content. */ 753 pdf_obj(p, base + 2); 754 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 755 ps_printf(p, "/Font <<\n"); 756 for (i = 0; i < (int)TERMFONT__MAX; i++) 757 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 758 ps_printf(p, ">>\n>>\n"); 759 760 /* Page node. */ 761 pdf_obj(p, base + 3); 762 ps_printf(p, "<<\n"); 763 ps_printf(p, "/Type /Page\n"); 764 ps_printf(p, "/Parent 2 0 R\n"); 765 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 766 ps_printf(p, "/Contents %zu 0 R\n", base); 767 ps_printf(p, ">>\nendobj\n"); 768 } else 769 ps_printf(p, "showpage\n"); 770 771 p->ps->pages++; 772 p->ps->psrow = p->ps->top; 773 assert( ! (PS_NEWPAGE & p->ps->flags)); 774 p->ps->flags |= PS_NEWPAGE; 775 } 776 777 static void 778 ps_end(struct termp *p) 779 { 780 size_t i, xref, base; 781 782 ps_plast(p); 783 ps_pclose(p); 784 785 /* 786 * At the end of the file, do one last showpage. This is the 787 * same behaviour as groff(1) and works for multiple pages as 788 * well as just one. 789 */ 790 791 if ( ! (PS_NEWPAGE & p->ps->flags)) { 792 assert(0 == p->ps->flags); 793 assert('\0' == p->ps->last); 794 ps_closepage(p); 795 } 796 797 if (TERMTYPE_PS == p->type) { 798 ps_printf(p, "%%%%Trailer\n"); 799 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 800 ps_printf(p, "%%%%EOF\n"); 801 return; 802 } 803 804 pdf_obj(p, 2); 805 ps_printf(p, "<<\n/Type /Pages\n"); 806 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 807 (size_t)AFM2PNT(p, p->ps->width), 808 (size_t)AFM2PNT(p, p->ps->height)); 809 810 ps_printf(p, "/Count %zu\n", p->ps->pages); 811 ps_printf(p, "/Kids ["); 812 813 for (i = 0; i < p->ps->pages; i++) 814 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 815 816 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 817 818 ps_printf(p, "]\n>>\nendobj\n"); 819 pdf_obj(p, base); 820 ps_printf(p, "<<\n"); 821 ps_printf(p, "/Type /Catalog\n"); 822 ps_printf(p, "/Pages 2 0 R\n"); 823 ps_printf(p, ">>\n"); 824 xref = p->ps->pdfbytes; 825 ps_printf(p, "xref\n"); 826 ps_printf(p, "0 %zu\n", base + 1); 827 ps_printf(p, "0000000000 65535 f \n"); 828 829 for (i = 0; i < base; i++) 830 ps_printf(p, "%.10zu 00000 n \n", 831 p->ps->pdfobjs[(int)i]); 832 833 ps_printf(p, "trailer\n"); 834 ps_printf(p, "<<\n"); 835 ps_printf(p, "/Size %zu\n", base + 1); 836 ps_printf(p, "/Root %zu 0 R\n", base); 837 ps_printf(p, "/Info 1 0 R\n"); 838 ps_printf(p, ">>\n"); 839 ps_printf(p, "startxref\n"); 840 ps_printf(p, "%zu\n", xref); 841 ps_printf(p, "%%%%EOF\n"); 842 } 843 844 static void 845 ps_begin(struct termp *p) 846 { 847 int i; 848 849 /* 850 * Print margins into margin buffer. Nothing gets output to the 851 * screen yet, so we don't need to initialise the primary state. 852 */ 853 854 if (p->ps->psmarg) { 855 assert(p->ps->psmargsz); 856 p->ps->psmarg[0] = '\0'; 857 } 858 859 /*p->ps->pdfbytes = 0;*/ 860 p->ps->psmargcur = 0; 861 p->ps->flags = PS_MARGINS; 862 p->ps->pscol = p->ps->left; 863 p->ps->psrow = p->ps->header; 864 865 ps_setfont(p, TERMFONT_NONE); 866 867 (*p->headf)(p, p->argf); 868 (*p->endline)(p); 869 870 p->ps->pscol = p->ps->left; 871 p->ps->psrow = p->ps->footer; 872 873 (*p->footf)(p, p->argf); 874 (*p->endline)(p); 875 876 p->ps->flags &= ~PS_MARGINS; 877 878 assert(0 == p->ps->flags); 879 assert(p->ps->psmarg); 880 assert('\0' != p->ps->psmarg[0]); 881 882 /* 883 * Print header and initialise page state. Following this, 884 * stuff gets printed to the screen, so make sure we're sane. 885 */ 886 887 if (TERMTYPE_PS == p->type) { 888 ps_printf(p, "%%!PS-Adobe-3.0\n"); 889 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 890 ps_printf(p, "%%%%Orientation: Portrait\n"); 891 ps_printf(p, "%%%%Pages: (atend)\n"); 892 ps_printf(p, "%%%%PageOrder: Ascend\n"); 893 ps_printf(p, "%%%%DocumentMedia: " 894 "Default %zu %zu 0 () ()\n", 895 (size_t)AFM2PNT(p, p->ps->width), 896 (size_t)AFM2PNT(p, p->ps->height)); 897 ps_printf(p, "%%%%DocumentNeededResources: font"); 898 899 for (i = 0; i < (int)TERMFONT__MAX; i++) 900 ps_printf(p, " %s", fonts[i].name); 901 902 ps_printf(p, "\n%%%%EndComments\n"); 903 } else { 904 ps_printf(p, "%%PDF-1.1\n"); 905 pdf_obj(p, 1); 906 ps_printf(p, "<<\n"); 907 ps_printf(p, ">>\n"); 908 ps_printf(p, "endobj\n"); 909 910 for (i = 0; i < (int)TERMFONT__MAX; i++) { 911 pdf_obj(p, (size_t)i + 3); 912 ps_printf(p, "<<\n"); 913 ps_printf(p, "/Type /Font\n"); 914 ps_printf(p, "/Subtype /Type1\n"); 915 ps_printf(p, "/Name /F%d\n", i); 916 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 917 ps_printf(p, ">>\n"); 918 } 919 } 920 921 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 922 p->ps->pscol = p->ps->left; 923 p->ps->psrow = p->ps->top; 924 p->ps->flags |= PS_NEWPAGE; 925 ps_setfont(p, TERMFONT_NONE); 926 } 927 928 static void 929 ps_pletter(struct termp *p, int c) 930 { 931 int f; 932 933 /* 934 * If we haven't opened a page context, then output that we're 935 * in a new page and make sure the font is correctly set. 936 */ 937 938 if (PS_NEWPAGE & p->ps->flags) { 939 if (TERMTYPE_PS == p->type) { 940 ps_printf(p, "%%%%Page: %zu %zu\n", 941 p->ps->pages + 1, p->ps->pages + 1); 942 ps_printf(p, "/%s %zu selectfont\n", 943 fonts[(int)p->ps->lastf].name, 944 p->ps->scale); 945 } else { 946 pdf_obj(p, p->ps->pdfbody + 947 p->ps->pages * 4); 948 ps_printf(p, "<<\n"); 949 ps_printf(p, "/Length %zu 0 R\n", 950 p->ps->pdfbody + 1 + p->ps->pages * 4); 951 ps_printf(p, ">>\nstream\n"); 952 } 953 p->ps->pdflastpg = p->ps->pdfbytes; 954 p->ps->flags &= ~PS_NEWPAGE; 955 } 956 957 /* 958 * If we're not in a PostScript "word" context, then open one 959 * now at the current cursor. 960 */ 961 962 if ( ! (PS_INLINE & p->ps->flags)) { 963 if (TERMTYPE_PS != p->type) { 964 ps_printf(p, "BT\n/F%d %zu Tf\n", 965 (int)p->ps->lastf, p->ps->scale); 966 ps_printf(p, "%.3f %.3f Td\n(", 967 AFM2PNT(p, p->ps->pscol), 968 AFM2PNT(p, p->ps->psrow)); 969 } else 970 ps_printf(p, "%.3f %.3f moveto\n(", 971 AFM2PNT(p, p->ps->pscol), 972 AFM2PNT(p, p->ps->psrow)); 973 p->ps->flags |= PS_INLINE; 974 } 975 976 assert( ! (PS_NEWPAGE & p->ps->flags)); 977 978 /* 979 * We need to escape these characters as per the PostScript 980 * specification. We would also escape non-graphable characters 981 * (like tabs), but none of them would get to this point and 982 * it's superfluous to abort() on them. 983 */ 984 985 switch (c) { 986 case '(': 987 case ')': 988 case '\\': 989 ps_putchar(p, '\\'); 990 break; 991 default: 992 break; 993 } 994 995 /* Write the character and adjust where we are on the page. */ 996 997 f = (int)p->ps->lastf; 998 999 if (c <= 32 || c - 32 >= MAXCHAR) 1000 c = 32; 1001 1002 ps_putchar(p, (char)c); 1003 c -= 32; 1004 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 1005 } 1006 1007 static void 1008 ps_pclose(struct termp *p) 1009 { 1010 1011 /* 1012 * Spit out that we're exiting a word context (this is a 1013 * "partial close" because we don't check the last-char buffer 1014 * or anything). 1015 */ 1016 1017 if ( ! (PS_INLINE & p->ps->flags)) 1018 return; 1019 1020 if (TERMTYPE_PS != p->type) { 1021 ps_printf(p, ") Tj\nET\n"); 1022 } else 1023 ps_printf(p, ") show\n"); 1024 1025 p->ps->flags &= ~PS_INLINE; 1026 } 1027 1028 /* If we have a `last' char that wasn't printed yet, print it now. */ 1029 static void 1030 ps_plast(struct termp *p) 1031 { 1032 size_t wx; 1033 1034 if (p->ps->last == '\0') 1035 return; 1036 1037 /* Check the font mode; open a new scope if it doesn't match. */ 1038 1039 if (p->ps->nextf != p->ps->lastf) { 1040 ps_pclose(p); 1041 ps_setfont(p, p->ps->nextf); 1042 } 1043 p->ps->nextf = TERMFONT_NONE; 1044 1045 /* 1046 * For an overstrike, if a previous character 1047 * was wider, advance to center the new one. 1048 */ 1049 1050 if (p->ps->pscolnext) { 1051 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; 1052 if (p->ps->pscol + wx < p->ps->pscolnext) 1053 p->ps->pscol = (p->ps->pscol + 1054 p->ps->pscolnext - wx) / 2; 1055 } 1056 1057 ps_pletter(p, p->ps->last); 1058 p->ps->last = '\0'; 1059 1060 /* 1061 * For an overstrike, if a previous character 1062 * was wider, advance to the end of the old one. 1063 */ 1064 1065 if (p->ps->pscol < p->ps->pscolnext) { 1066 ps_pclose(p); 1067 p->ps->pscol = p->ps->pscolnext; 1068 } 1069 } 1070 1071 static void 1072 ps_letter(struct termp *p, int arg) 1073 { 1074 size_t savecol; 1075 char c; 1076 1077 c = arg >= 128 || arg <= 0 ? '?' : arg; 1078 1079 /* 1080 * When receiving a backspace, merely flag it. 1081 * We don't know yet whether it is 1082 * a font instruction or an overstrike. 1083 */ 1084 1085 if (c == '\b') { 1086 assert(p->ps->last != '\0'); 1087 assert( ! (p->ps->flags & PS_BACKSP)); 1088 p->ps->flags |= PS_BACKSP; 1089 return; 1090 } 1091 1092 /* 1093 * Decode font instructions. 1094 */ 1095 1096 if (p->ps->flags & PS_BACKSP) { 1097 if (p->ps->last == '_') { 1098 switch (p->ps->nextf) { 1099 case TERMFONT_BI: 1100 break; 1101 case TERMFONT_BOLD: 1102 p->ps->nextf = TERMFONT_BI; 1103 break; 1104 default: 1105 p->ps->nextf = TERMFONT_UNDER; 1106 } 1107 p->ps->last = c; 1108 p->ps->flags &= ~PS_BACKSP; 1109 return; 1110 } 1111 if (p->ps->last == c) { 1112 switch (p->ps->nextf) { 1113 case TERMFONT_BI: 1114 break; 1115 case TERMFONT_UNDER: 1116 p->ps->nextf = TERMFONT_BI; 1117 break; 1118 default: 1119 p->ps->nextf = TERMFONT_BOLD; 1120 } 1121 p->ps->flags &= ~PS_BACKSP; 1122 return; 1123 } 1124 1125 /* 1126 * This is not a font instruction, but rather 1127 * the next character. Prepare for overstrike. 1128 */ 1129 1130 savecol = p->ps->pscol; 1131 } else 1132 savecol = SIZE_MAX; 1133 1134 /* 1135 * We found the next character, so the font instructions 1136 * for the previous one are complete. 1137 * Use them and print it. 1138 */ 1139 1140 ps_plast(p); 1141 1142 /* 1143 * Do not print the current character yet because font 1144 * instructions might follow; only remember the character. 1145 * It will get printed later from ps_plast(). 1146 */ 1147 1148 p->ps->last = c; 1149 1150 /* 1151 * For an overstrike, back up to the previous position. 1152 * If the previous character is wider than any it overstrikes, 1153 * remember the current position, because it might also be 1154 * wider than all that will overstrike it. 1155 */ 1156 1157 if (savecol != SIZE_MAX) { 1158 if (p->ps->pscolnext < p->ps->pscol) 1159 p->ps->pscolnext = p->ps->pscol; 1160 ps_pclose(p); 1161 p->ps->pscol = savecol; 1162 p->ps->flags &= ~PS_BACKSP; 1163 } else 1164 p->ps->pscolnext = 0; 1165 } 1166 1167 static void 1168 ps_advance(struct termp *p, size_t len) 1169 { 1170 1171 /* 1172 * Advance some spaces. This can probably be made smarter, 1173 * i.e., to have multiple space-separated words in the same 1174 * scope, but this is easier: just close out the current scope 1175 * and readjust our column settings. 1176 */ 1177 1178 ps_plast(p); 1179 ps_pclose(p); 1180 p->ps->pscol += len; 1181 } 1182 1183 static void 1184 ps_endline(struct termp *p) 1185 { 1186 1187 /* Close out any scopes we have open: we're at eoln. */ 1188 1189 ps_plast(p); 1190 ps_pclose(p); 1191 1192 /* 1193 * If we're in the margin, don't try to recalculate our current 1194 * row. XXX: if the column tries to be fancy with multiple 1195 * lines, we'll do nasty stuff. 1196 */ 1197 1198 if (PS_MARGINS & p->ps->flags) 1199 return; 1200 1201 /* Left-justify. */ 1202 1203 p->ps->pscol = p->ps->left; 1204 1205 /* If we haven't printed anything, return. */ 1206 1207 if (PS_NEWPAGE & p->ps->flags) 1208 return; 1209 1210 /* 1211 * Put us down a line. If we're at the page bottom, spit out a 1212 * showpage and restart our row. 1213 */ 1214 1215 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1216 p->ps->psrow -= p->ps->lineheight; 1217 return; 1218 } 1219 1220 ps_closepage(p); 1221 1222 p->tcol->offset -= p->ti; 1223 p->ti = 0; 1224 } 1225 1226 static void 1227 ps_setfont(struct termp *p, enum termfont f) 1228 { 1229 1230 assert(f < TERMFONT__MAX); 1231 p->ps->lastf = f; 1232 1233 /* 1234 * If we're still at the top of the page, let the font-setting 1235 * be delayed until we actually have stuff to print. 1236 */ 1237 1238 if (PS_NEWPAGE & p->ps->flags) 1239 return; 1240 1241 if (TERMTYPE_PS == p->type) 1242 ps_printf(p, "/%s %zu selectfont\n", 1243 fonts[(int)f].name, p->ps->scale); 1244 else 1245 ps_printf(p, "/F%d %zu Tf\n", 1246 (int)f, p->ps->scale); 1247 } 1248 1249 static size_t 1250 ps_width(const struct termp *p, int c) 1251 { 1252 1253 if (c <= 32 || c - 32 >= MAXCHAR) 1254 c = 0; 1255 else 1256 c -= 32; 1257 1258 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx; 1259 } 1260 1261 static int 1262 ps_hspan(const struct termp *p, const struct roffsu *su) 1263 { 1264 double r; 1265 1266 /* 1267 * All of these measurements are derived by converting from the 1268 * native measurement to AFM units. 1269 */ 1270 switch (su->unit) { 1271 case SCALE_BU: 1272 /* 1273 * Traditionally, the default unit is fixed to the 1274 * output media. So this would refer to the point. In 1275 * mandoc(1), however, we stick to the default terminal 1276 * scaling unit so that output is the same regardless 1277 * the media. 1278 */ 1279 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1280 break; 1281 case SCALE_CM: 1282 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1283 break; 1284 case SCALE_EM: 1285 r = su->scale * 1286 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1287 break; 1288 case SCALE_EN: 1289 r = su->scale * 1290 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1291 break; 1292 case SCALE_IN: 1293 r = PNT2AFM(p, su->scale * 72.0); 1294 break; 1295 case SCALE_MM: 1296 r = su->scale * 1297 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1298 break; 1299 case SCALE_PC: 1300 r = PNT2AFM(p, su->scale * 12.0); 1301 break; 1302 case SCALE_PT: 1303 r = PNT2AFM(p, su->scale * 1.0); 1304 break; 1305 case SCALE_VS: 1306 r = su->scale * p->ps->lineheight; 1307 break; 1308 default: 1309 r = su->scale; 1310 break; 1311 } 1312 1313 return r * 24.0; 1314 } 1315 1316 static void 1317 ps_growbuf(struct termp *p, size_t sz) 1318 { 1319 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1320 return; 1321 1322 if (sz < PS_BUFSLOP) 1323 sz = PS_BUFSLOP; 1324 1325 p->ps->psmargsz += sz; 1326 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1327 } 1328