1 /* $Id: term_ps.c,v 1.80 2015/12/23 20:50:13 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 "config.h" 19 20 #include <sys/types.h> 21 22 #include <assert.h> 23 #if HAVE_ERR 24 #include <err.h> 25 #endif 26 #include <stdarg.h> 27 #include <stdint.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <unistd.h> 32 33 #include "mandoc_aux.h" 34 #include "out.h" 35 #include "term.h" 36 #include "manconf.h" 37 #include "main.h" 38 39 /* These work the buffer used by the header and footer. */ 40 #define PS_BUFSLOP 128 41 42 /* Convert PostScript point "x" to an AFM unit. */ 43 #define PNT2AFM(p, x) \ 44 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 45 46 /* Convert an AFM unit "x" to a PostScript points */ 47 #define AFM2PNT(p, x) \ 48 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 49 50 struct glyph { 51 unsigned short wx; /* WX in AFM */ 52 }; 53 54 struct font { 55 const char *name; /* FontName in AFM */ 56 #define MAXCHAR 95 /* total characters we can handle */ 57 struct glyph gly[MAXCHAR]; /* glyph metrics */ 58 }; 59 60 struct termp_ps { 61 int flags; 62 #define PS_INLINE (1 << 0) /* we're in a word */ 63 #define PS_MARGINS (1 << 1) /* we're in the margins */ 64 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 65 #define PS_BACKSP (1 << 3) /* last character was backspace */ 66 size_t pscol; /* visible column (AFM units) */ 67 size_t pscolnext; /* used for overstrike */ 68 size_t psrow; /* visible row (AFM units) */ 69 char *psmarg; /* margin buf */ 70 size_t psmargsz; /* margin buf size */ 71 size_t psmargcur; /* cur index in margin buf */ 72 char last; /* last non-backspace seen */ 73 enum termfont lastf; /* last set font */ 74 enum termfont nextf; /* building next font here */ 75 size_t scale; /* font scaling factor */ 76 size_t pages; /* number of pages shown */ 77 size_t lineheight; /* line height (AFM units) */ 78 size_t top; /* body top (AFM units) */ 79 size_t bottom; /* body bottom (AFM units) */ 80 size_t height; /* page height (AFM units */ 81 size_t width; /* page width (AFM units) */ 82 size_t lastwidth; /* page width before last ll */ 83 size_t left; /* body left (AFM units) */ 84 size_t header; /* header pos (AFM units) */ 85 size_t footer; /* footer pos (AFM units) */ 86 size_t pdfbytes; /* current output byte */ 87 size_t pdflastpg; /* byte of last page mark */ 88 size_t pdfbody; /* start of body object */ 89 size_t *pdfobjs; /* table of object offsets */ 90 size_t pdfobjsz; /* size of pdfobjs */ 91 }; 92 93 static int ps_hspan(const struct termp *, 94 const struct roffsu *); 95 static size_t ps_width(const struct termp *, int); 96 static void ps_advance(struct termp *, size_t); 97 static void ps_begin(struct termp *); 98 static void ps_closepage(struct termp *); 99 static void ps_end(struct termp *); 100 static void ps_endline(struct termp *); 101 static void ps_fclose(struct termp *); 102 static void ps_growbuf(struct termp *, size_t); 103 static void ps_letter(struct termp *, int); 104 static void ps_pclose(struct termp *); 105 static void ps_pletter(struct termp *, int); 106 #if __GNUC__ - 0 >= 4 107 __attribute__((__format__ (__printf__, 2, 3))) 108 #endif 109 static void ps_printf(struct termp *, const char *, ...); 110 static void ps_putchar(struct termp *, char); 111 static void ps_setfont(struct termp *, enum termfont); 112 static void ps_setwidth(struct termp *, int, int); 113 static struct termp *pspdf_alloc(const struct manoutput *); 114 static void pdf_obj(struct termp *, size_t); 115 116 /* 117 * We define, for the time being, three fonts: bold, oblique/italic, and 118 * normal (roman). The following table hard-codes the font metrics for 119 * ASCII, i.e., 32--127. 120 */ 121 122 static const struct font fonts[TERMFONT__MAX] = { 123 { "Times-Roman", { 124 { 250 }, 125 { 333 }, 126 { 408 }, 127 { 500 }, 128 { 500 }, 129 { 833 }, 130 { 778 }, 131 { 333 }, 132 { 333 }, 133 { 333 }, 134 { 500 }, 135 { 564 }, 136 { 250 }, 137 { 333 }, 138 { 250 }, 139 { 278 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 500 }, 144 { 500 }, 145 { 500 }, 146 { 500 }, 147 { 500 }, 148 { 500 }, 149 { 500 }, 150 { 278 }, 151 { 278 }, 152 { 564 }, 153 { 564 }, 154 { 564 }, 155 { 444 }, 156 { 921 }, 157 { 722 }, 158 { 667 }, 159 { 667 }, 160 { 722 }, 161 { 611 }, 162 { 556 }, 163 { 722 }, 164 { 722 }, 165 { 333 }, 166 { 389 }, 167 { 722 }, 168 { 611 }, 169 { 889 }, 170 { 722 }, 171 { 722 }, 172 { 556 }, 173 { 722 }, 174 { 667 }, 175 { 556 }, 176 { 611 }, 177 { 722 }, 178 { 722 }, 179 { 944 }, 180 { 722 }, 181 { 722 }, 182 { 611 }, 183 { 333 }, 184 { 278 }, 185 { 333 }, 186 { 469 }, 187 { 500 }, 188 { 333 }, 189 { 444 }, 190 { 500 }, 191 { 444 }, 192 { 500}, 193 { 444}, 194 { 333}, 195 { 500}, 196 { 500}, 197 { 278}, 198 { 278}, 199 { 500}, 200 { 278}, 201 { 778}, 202 { 500}, 203 { 500}, 204 { 500}, 205 { 500}, 206 { 333}, 207 { 389}, 208 { 278}, 209 { 500}, 210 { 500}, 211 { 722}, 212 { 500}, 213 { 500}, 214 { 444}, 215 { 480}, 216 { 200}, 217 { 480}, 218 { 541}, 219 } }, 220 { "Times-Bold", { 221 { 250 }, 222 { 333 }, 223 { 555 }, 224 { 500 }, 225 { 500 }, 226 { 1000 }, 227 { 833 }, 228 { 333 }, 229 { 333 }, 230 { 333 }, 231 { 500 }, 232 { 570 }, 233 { 250 }, 234 { 333 }, 235 { 250 }, 236 { 278 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 500 }, 241 { 500 }, 242 { 500 }, 243 { 500 }, 244 { 500 }, 245 { 500 }, 246 { 500 }, 247 { 333 }, 248 { 333 }, 249 { 570 }, 250 { 570 }, 251 { 570 }, 252 { 500 }, 253 { 930 }, 254 { 722 }, 255 { 667 }, 256 { 722 }, 257 { 722 }, 258 { 667 }, 259 { 611 }, 260 { 778 }, 261 { 778 }, 262 { 389 }, 263 { 500 }, 264 { 778 }, 265 { 667 }, 266 { 944 }, 267 { 722 }, 268 { 778 }, 269 { 611 }, 270 { 778 }, 271 { 722 }, 272 { 556 }, 273 { 667 }, 274 { 722 }, 275 { 722 }, 276 { 1000 }, 277 { 722 }, 278 { 722 }, 279 { 667 }, 280 { 333 }, 281 { 278 }, 282 { 333 }, 283 { 581 }, 284 { 500 }, 285 { 333 }, 286 { 500 }, 287 { 556 }, 288 { 444 }, 289 { 556 }, 290 { 444 }, 291 { 333 }, 292 { 500 }, 293 { 556 }, 294 { 278 }, 295 { 333 }, 296 { 556 }, 297 { 278 }, 298 { 833 }, 299 { 556 }, 300 { 500 }, 301 { 556 }, 302 { 556 }, 303 { 444 }, 304 { 389 }, 305 { 333 }, 306 { 556 }, 307 { 500 }, 308 { 722 }, 309 { 500 }, 310 { 500 }, 311 { 444 }, 312 { 394 }, 313 { 220 }, 314 { 394 }, 315 { 520 }, 316 } }, 317 { "Times-Italic", { 318 { 250 }, 319 { 333 }, 320 { 420 }, 321 { 500 }, 322 { 500 }, 323 { 833 }, 324 { 778 }, 325 { 333 }, 326 { 333 }, 327 { 333 }, 328 { 500 }, 329 { 675 }, 330 { 250 }, 331 { 333 }, 332 { 250 }, 333 { 278 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 500 }, 338 { 500 }, 339 { 500 }, 340 { 500 }, 341 { 500 }, 342 { 500 }, 343 { 500 }, 344 { 333 }, 345 { 333 }, 346 { 675 }, 347 { 675 }, 348 { 675 }, 349 { 500 }, 350 { 920 }, 351 { 611 }, 352 { 611 }, 353 { 667 }, 354 { 722 }, 355 { 611 }, 356 { 611 }, 357 { 722 }, 358 { 722 }, 359 { 333 }, 360 { 444 }, 361 { 667 }, 362 { 556 }, 363 { 833 }, 364 { 667 }, 365 { 722 }, 366 { 611 }, 367 { 722 }, 368 { 611 }, 369 { 500 }, 370 { 556 }, 371 { 722 }, 372 { 611 }, 373 { 833 }, 374 { 611 }, 375 { 556 }, 376 { 556 }, 377 { 389 }, 378 { 278 }, 379 { 389 }, 380 { 422 }, 381 { 500 }, 382 { 333 }, 383 { 500 }, 384 { 500 }, 385 { 444 }, 386 { 500 }, 387 { 444 }, 388 { 278 }, 389 { 500 }, 390 { 500 }, 391 { 278 }, 392 { 278 }, 393 { 444 }, 394 { 278 }, 395 { 722 }, 396 { 500 }, 397 { 500 }, 398 { 500 }, 399 { 500 }, 400 { 389 }, 401 { 389 }, 402 { 278 }, 403 { 500 }, 404 { 444 }, 405 { 667 }, 406 { 444 }, 407 { 444 }, 408 { 389 }, 409 { 400 }, 410 { 275 }, 411 { 400 }, 412 { 541 }, 413 } }, 414 { "Times-BoldItalic", { 415 { 250 }, 416 { 389 }, 417 { 555 }, 418 { 500 }, 419 { 500 }, 420 { 833 }, 421 { 778 }, 422 { 333 }, 423 { 333 }, 424 { 333 }, 425 { 500 }, 426 { 570 }, 427 { 250 }, 428 { 333 }, 429 { 250 }, 430 { 278 }, 431 { 500 }, 432 { 500 }, 433 { 500 }, 434 { 500 }, 435 { 500 }, 436 { 500 }, 437 { 500 }, 438 { 500 }, 439 { 500 }, 440 { 500 }, 441 { 333 }, 442 { 333 }, 443 { 570 }, 444 { 570 }, 445 { 570 }, 446 { 500 }, 447 { 832 }, 448 { 667 }, 449 { 667 }, 450 { 667 }, 451 { 722 }, 452 { 667 }, 453 { 667 }, 454 { 722 }, 455 { 778 }, 456 { 389 }, 457 { 500 }, 458 { 667 }, 459 { 611 }, 460 { 889 }, 461 { 722 }, 462 { 722 }, 463 { 611 }, 464 { 722 }, 465 { 667 }, 466 { 556 }, 467 { 611 }, 468 { 722 }, 469 { 667 }, 470 { 889 }, 471 { 667 }, 472 { 611 }, 473 { 611 }, 474 { 333 }, 475 { 278 }, 476 { 333 }, 477 { 570 }, 478 { 500 }, 479 { 333 }, 480 { 500 }, 481 { 500 }, 482 { 444 }, 483 { 500 }, 484 { 444 }, 485 { 333 }, 486 { 500 }, 487 { 556 }, 488 { 278 }, 489 { 278 }, 490 { 500 }, 491 { 278 }, 492 { 778 }, 493 { 556 }, 494 { 500 }, 495 { 500 }, 496 { 500 }, 497 { 389 }, 498 { 389 }, 499 { 278 }, 500 { 556 }, 501 { 444 }, 502 { 667 }, 503 { 500 }, 504 { 444 }, 505 { 389 }, 506 { 348 }, 507 { 220 }, 508 { 348 }, 509 { 570 }, 510 } }, 511 }; 512 513 void * 514 pdf_alloc(const struct manoutput *outopts) 515 { 516 struct termp *p; 517 518 if (NULL != (p = pspdf_alloc(outopts))) 519 p->type = TERMTYPE_PDF; 520 521 return p; 522 } 523 524 void * 525 ps_alloc(const struct manoutput *outopts) 526 { 527 struct termp *p; 528 529 if (NULL != (p = pspdf_alloc(outopts))) 530 p->type = TERMTYPE_PS; 531 532 return p; 533 } 534 535 static struct termp * 536 pspdf_alloc(const struct manoutput *outopts) 537 { 538 struct termp *p; 539 unsigned int pagex, pagey; 540 size_t marginx, marginy, lineheight; 541 const char *pp; 542 543 p = mandoc_calloc(1, sizeof(struct termp)); 544 p->enc = TERMENC_ASCII; 545 p->fontq = mandoc_reallocarray(NULL, 546 (p->fontsz = 8), sizeof(enum termfont)); 547 p->fontq[0] = p->fontl = TERMFONT_NONE; 548 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 549 550 p->advance = ps_advance; 551 p->begin = ps_begin; 552 p->end = ps_end; 553 p->endline = ps_endline; 554 p->hspan = ps_hspan; 555 p->letter = ps_letter; 556 p->setwidth = ps_setwidth; 557 p->width = ps_width; 558 559 /* Default to US letter (millimetres). */ 560 561 pagex = 216; 562 pagey = 279; 563 564 /* 565 * The ISO-269 paper sizes can be calculated automatically, but 566 * it would require bringing in -lm for pow() and I'd rather not 567 * do that. So just do it the easy way for now. Since this 568 * only happens once, I'm not terribly concerned. 569 */ 570 571 pp = outopts->paper; 572 if (pp && strcasecmp(pp, "letter")) { 573 if (0 == strcasecmp(pp, "a3")) { 574 pagex = 297; 575 pagey = 420; 576 } else if (0 == strcasecmp(pp, "a4")) { 577 pagex = 210; 578 pagey = 297; 579 } else if (0 == strcasecmp(pp, "a5")) { 580 pagex = 148; 581 pagey = 210; 582 } else if (0 == strcasecmp(pp, "legal")) { 583 pagex = 216; 584 pagey = 356; 585 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 586 warnx("%s: Unknown paper", pp); 587 } 588 589 /* 590 * This MUST be defined before any PNT2AFM or AFM2PNT 591 * calculations occur. 592 */ 593 594 p->ps->scale = 11; 595 596 /* Remember millimetres -> AFM units. */ 597 598 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 599 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 600 601 /* Margins are 1/9 the page x and y. */ 602 603 marginx = (size_t)((double)pagex / 9.0); 604 marginy = (size_t)((double)pagey / 9.0); 605 606 /* Line-height is 1.4em. */ 607 608 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 609 610 p->ps->width = p->ps->lastwidth = (size_t)pagex; 611 p->ps->height = (size_t)pagey; 612 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 613 p->ps->top = pagey - marginy; 614 p->ps->footer = (marginy / 2) - (lineheight / 2); 615 p->ps->bottom = marginy; 616 p->ps->left = marginx; 617 p->ps->lineheight = lineheight; 618 619 p->defrmargin = pagex - (marginx * 2); 620 return p; 621 } 622 623 static void 624 ps_setwidth(struct termp *p, int iop, int width) 625 { 626 size_t lastwidth; 627 628 lastwidth = p->ps->width; 629 if (iop > 0) 630 p->ps->width += width; 631 else if (iop == 0) 632 p->ps->width = width ? (size_t)width : p->ps->lastwidth; 633 else if (p->ps->width > (size_t)width) 634 p->ps->width -= width; 635 else 636 p->ps->width = 0; 637 p->ps->lastwidth = lastwidth; 638 } 639 640 void 641 pspdf_free(void *arg) 642 { 643 struct termp *p; 644 645 p = (struct termp *)arg; 646 647 free(p->ps->psmarg); 648 free(p->ps->pdfobjs); 649 650 free(p->ps); 651 term_free(p); 652 } 653 654 static void 655 ps_printf(struct termp *p, const char *fmt, ...) 656 { 657 va_list ap; 658 int pos, len; 659 660 va_start(ap, fmt); 661 662 /* 663 * If we're running in regular mode, then pipe directly into 664 * vprintf(). If we're processing margins, then push the data 665 * into our growable margin buffer. 666 */ 667 668 if ( ! (PS_MARGINS & p->ps->flags)) { 669 len = vprintf(fmt, ap); 670 va_end(ap); 671 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 672 return; 673 } 674 675 /* 676 * XXX: I assume that the in-margin print won't exceed 677 * PS_BUFSLOP (128 bytes), which is reasonable but still an 678 * assumption that will cause pukeage if it's not the case. 679 */ 680 681 ps_growbuf(p, PS_BUFSLOP); 682 683 pos = (int)p->ps->psmargcur; 684 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 685 686 va_end(ap); 687 688 p->ps->psmargcur = strlen(p->ps->psmarg); 689 } 690 691 static void 692 ps_putchar(struct termp *p, char c) 693 { 694 int pos; 695 696 /* See ps_printf(). */ 697 698 if ( ! (PS_MARGINS & p->ps->flags)) { 699 putchar(c); 700 p->ps->pdfbytes++; 701 return; 702 } 703 704 ps_growbuf(p, 2); 705 706 pos = (int)p->ps->psmargcur++; 707 p->ps->psmarg[pos++] = c; 708 p->ps->psmarg[pos] = '\0'; 709 } 710 711 static void 712 pdf_obj(struct termp *p, size_t obj) 713 { 714 715 assert(obj > 0); 716 717 if ((obj - 1) >= p->ps->pdfobjsz) { 718 p->ps->pdfobjsz = obj + 128; 719 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 720 p->ps->pdfobjsz, sizeof(size_t)); 721 } 722 723 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 724 ps_printf(p, "%zu 0 obj\n", obj); 725 } 726 727 static void 728 ps_closepage(struct termp *p) 729 { 730 int i; 731 size_t len, base; 732 733 /* 734 * Close out a page that we've already flushed to output. In 735 * PostScript, we simply note that the page must be showed. In 736 * PDF, we must now create the Length, Resource, and Page node 737 * for the page contents. 738 */ 739 740 assert(p->ps->psmarg && p->ps->psmarg[0]); 741 ps_printf(p, "%s", p->ps->psmarg); 742 743 if (TERMTYPE_PS != p->type) { 744 ps_printf(p, "ET\n"); 745 746 len = p->ps->pdfbytes - p->ps->pdflastpg; 747 base = p->ps->pages * 4 + p->ps->pdfbody; 748 749 ps_printf(p, "endstream\nendobj\n"); 750 751 /* Length of content. */ 752 pdf_obj(p, base + 1); 753 ps_printf(p, "%zu\nendobj\n", len); 754 755 /* Resource for content. */ 756 pdf_obj(p, base + 2); 757 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 758 ps_printf(p, "/Font <<\n"); 759 for (i = 0; i < (int)TERMFONT__MAX; i++) 760 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 761 ps_printf(p, ">>\n>>\n"); 762 763 /* Page node. */ 764 pdf_obj(p, base + 3); 765 ps_printf(p, "<<\n"); 766 ps_printf(p, "/Type /Page\n"); 767 ps_printf(p, "/Parent 2 0 R\n"); 768 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 769 ps_printf(p, "/Contents %zu 0 R\n", base); 770 ps_printf(p, ">>\nendobj\n"); 771 } else 772 ps_printf(p, "showpage\n"); 773 774 p->ps->pages++; 775 p->ps->psrow = p->ps->top; 776 assert( ! (PS_NEWPAGE & p->ps->flags)); 777 p->ps->flags |= PS_NEWPAGE; 778 } 779 780 static void 781 ps_end(struct termp *p) 782 { 783 size_t i, xref, base; 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 static void 1029 ps_fclose(struct termp *p) 1030 { 1031 1032 /* 1033 * Strong closure: if we have a last-char, spit it out after 1034 * checking that we're in the right font mode. This will of 1035 * course open a new scope, if applicable. 1036 * 1037 * Following this, close out any scope that's open. 1038 */ 1039 1040 if (p->ps->last != '\0') { 1041 assert( ! (p->ps->flags & PS_BACKSP)); 1042 if (p->ps->nextf != p->ps->lastf) { 1043 ps_pclose(p); 1044 ps_setfont(p, p->ps->nextf); 1045 } 1046 p->ps->nextf = TERMFONT_NONE; 1047 ps_pletter(p, p->ps->last); 1048 p->ps->last = '\0'; 1049 } 1050 1051 if ( ! (PS_INLINE & p->ps->flags)) 1052 return; 1053 1054 ps_pclose(p); 1055 } 1056 1057 static void 1058 ps_letter(struct termp *p, int arg) 1059 { 1060 size_t savecol, wx; 1061 char c; 1062 1063 c = arg >= 128 || arg <= 0 ? '?' : arg; 1064 1065 /* 1066 * When receiving a backspace, merely flag it. 1067 * We don't know yet whether it is 1068 * a font instruction or an overstrike. 1069 */ 1070 1071 if (c == '\b') { 1072 assert(p->ps->last != '\0'); 1073 assert( ! (p->ps->flags & PS_BACKSP)); 1074 p->ps->flags |= PS_BACKSP; 1075 return; 1076 } 1077 1078 /* 1079 * Decode font instructions. 1080 */ 1081 1082 if (p->ps->flags & PS_BACKSP) { 1083 if (p->ps->last == '_') { 1084 switch (p->ps->nextf) { 1085 case TERMFONT_BI: 1086 break; 1087 case TERMFONT_BOLD: 1088 p->ps->nextf = TERMFONT_BI; 1089 break; 1090 default: 1091 p->ps->nextf = TERMFONT_UNDER; 1092 } 1093 p->ps->last = c; 1094 p->ps->flags &= ~PS_BACKSP; 1095 return; 1096 } 1097 if (p->ps->last == c) { 1098 switch (p->ps->nextf) { 1099 case TERMFONT_BI: 1100 break; 1101 case TERMFONT_UNDER: 1102 p->ps->nextf = TERMFONT_BI; 1103 break; 1104 default: 1105 p->ps->nextf = TERMFONT_BOLD; 1106 } 1107 p->ps->flags &= ~PS_BACKSP; 1108 return; 1109 } 1110 1111 /* 1112 * This is not a font instruction, but rather 1113 * the next character. Prepare for overstrike. 1114 */ 1115 1116 savecol = p->ps->pscol; 1117 } else 1118 savecol = SIZE_MAX; 1119 1120 /* 1121 * We found the next character, so the font instructions 1122 * for the previous one are complete. 1123 * Use them and print it. 1124 */ 1125 1126 if (p->ps->last != '\0') { 1127 if (p->ps->nextf != p->ps->lastf) { 1128 ps_pclose(p); 1129 ps_setfont(p, p->ps->nextf); 1130 } 1131 p->ps->nextf = TERMFONT_NONE; 1132 1133 /* 1134 * For an overstrike, if a previous character 1135 * was wider, advance to center the new one. 1136 */ 1137 1138 if (p->ps->pscolnext) { 1139 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; 1140 if (p->ps->pscol + wx < p->ps->pscolnext) 1141 p->ps->pscol = (p->ps->pscol + 1142 p->ps->pscolnext - wx) / 2; 1143 } 1144 1145 ps_pletter(p, p->ps->last); 1146 1147 /* 1148 * For an overstrike, if a previous character 1149 * was wider, advance to the end of the old one. 1150 */ 1151 1152 if (p->ps->pscol < p->ps->pscolnext) { 1153 ps_pclose(p); 1154 p->ps->pscol = p->ps->pscolnext; 1155 } 1156 } 1157 1158 /* 1159 * Do not print the current character yet because font 1160 * instructions might follow; only remember it. 1161 * For the first character, nothing else is done. 1162 * The final character will get printed from ps_fclose(). 1163 */ 1164 1165 p->ps->last = c; 1166 1167 /* 1168 * For an overstrike, back up to the previous position. 1169 * If the previous character is wider than any it overstrikes, 1170 * remember the current position, because it might also be 1171 * wider than all that will overstrike it. 1172 */ 1173 1174 if (savecol != SIZE_MAX) { 1175 if (p->ps->pscolnext < p->ps->pscol) 1176 p->ps->pscolnext = p->ps->pscol; 1177 ps_pclose(p); 1178 p->ps->pscol = savecol; 1179 p->ps->flags &= ~PS_BACKSP; 1180 } else 1181 p->ps->pscolnext = 0; 1182 } 1183 1184 static void 1185 ps_advance(struct termp *p, size_t len) 1186 { 1187 1188 /* 1189 * Advance some spaces. This can probably be made smarter, 1190 * i.e., to have multiple space-separated words in the same 1191 * scope, but this is easier: just close out the current scope 1192 * and readjust our column settings. 1193 */ 1194 1195 ps_fclose(p); 1196 p->ps->pscol += len; 1197 } 1198 1199 static void 1200 ps_endline(struct termp *p) 1201 { 1202 1203 /* Close out any scopes we have open: we're at eoln. */ 1204 1205 ps_fclose(p); 1206 1207 /* 1208 * If we're in the margin, don't try to recalculate our current 1209 * row. XXX: if the column tries to be fancy with multiple 1210 * lines, we'll do nasty stuff. 1211 */ 1212 1213 if (PS_MARGINS & p->ps->flags) 1214 return; 1215 1216 /* Left-justify. */ 1217 1218 p->ps->pscol = p->ps->left; 1219 1220 /* If we haven't printed anything, return. */ 1221 1222 if (PS_NEWPAGE & p->ps->flags) 1223 return; 1224 1225 /* 1226 * Put us down a line. If we're at the page bottom, spit out a 1227 * showpage and restart our row. 1228 */ 1229 1230 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1231 p->ps->psrow -= p->ps->lineheight; 1232 return; 1233 } 1234 1235 ps_closepage(p); 1236 } 1237 1238 static void 1239 ps_setfont(struct termp *p, enum termfont f) 1240 { 1241 1242 assert(f < TERMFONT__MAX); 1243 p->ps->lastf = f; 1244 1245 /* 1246 * If we're still at the top of the page, let the font-setting 1247 * be delayed until we actually have stuff to print. 1248 */ 1249 1250 if (PS_NEWPAGE & p->ps->flags) 1251 return; 1252 1253 if (TERMTYPE_PS == p->type) 1254 ps_printf(p, "/%s %zu selectfont\n", 1255 fonts[(int)f].name, p->ps->scale); 1256 else 1257 ps_printf(p, "/F%d %zu Tf\n", 1258 (int)f, p->ps->scale); 1259 } 1260 1261 static size_t 1262 ps_width(const struct termp *p, int c) 1263 { 1264 1265 if (c <= 32 || c - 32 >= MAXCHAR) 1266 c = 0; 1267 else 1268 c -= 32; 1269 1270 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx; 1271 } 1272 1273 static int 1274 ps_hspan(const struct termp *p, const struct roffsu *su) 1275 { 1276 double r; 1277 1278 /* 1279 * All of these measurements are derived by converting from the 1280 * native measurement to AFM units. 1281 */ 1282 switch (su->unit) { 1283 case SCALE_BU: 1284 /* 1285 * Traditionally, the default unit is fixed to the 1286 * output media. So this would refer to the point. In 1287 * mandoc(1), however, we stick to the default terminal 1288 * scaling unit so that output is the same regardless 1289 * the media. 1290 */ 1291 r = PNT2AFM(p, su->scale * 72.0 / 240.0); 1292 break; 1293 case SCALE_CM: 1294 r = PNT2AFM(p, su->scale * 72.0 / 2.54); 1295 break; 1296 case SCALE_EM: 1297 r = su->scale * 1298 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1299 break; 1300 case SCALE_EN: 1301 r = su->scale * 1302 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1303 break; 1304 case SCALE_IN: 1305 r = PNT2AFM(p, su->scale * 72.0); 1306 break; 1307 case SCALE_MM: 1308 r = su->scale * 1309 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0; 1310 break; 1311 case SCALE_PC: 1312 r = PNT2AFM(p, su->scale * 12.0); 1313 break; 1314 case SCALE_PT: 1315 r = PNT2AFM(p, su->scale * 1.0); 1316 break; 1317 case SCALE_VS: 1318 r = su->scale * p->ps->lineheight; 1319 break; 1320 default: 1321 r = su->scale; 1322 break; 1323 } 1324 1325 return r * 24.0; 1326 } 1327 1328 static void 1329 ps_growbuf(struct termp *p, size_t sz) 1330 { 1331 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1332 return; 1333 1334 if (sz < PS_BUFSLOP) 1335 sz = PS_BUFSLOP; 1336 1337 p->ps->psmargsz += sz; 1338 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1339 } 1340