1 /* $Id: term_ps.c,v 1.54 2011/10/16 12:20:34 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 #ifdef HAVE_CONFIG_H 18 #include "config.h" 19 #endif 20 21 #include <sys/types.h> 22 23 #include <assert.h> 24 #include <stdarg.h> 25 #include <stdint.h> 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <time.h> 30 #include <unistd.h> 31 32 #include "mandoc.h" 33 #include "out.h" 34 #include "main.h" 35 #include "term.h" 36 37 /* These work the buffer used by the header and footer. */ 38 #define PS_BUFSLOP 128 39 40 /* Convert PostScript point "x" to an AFM unit. */ 41 #define PNT2AFM(p, x) /* LINTED */ \ 42 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 43 44 /* Convert an AFM unit "x" to a PostScript points */ 45 #define AFM2PNT(p, x) /* LINTED */ \ 46 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 47 48 struct glyph { 49 unsigned short wx; /* WX in AFM */ 50 }; 51 52 struct font { 53 const char *name; /* FontName in AFM */ 54 #define MAXCHAR 95 /* total characters we can handle */ 55 struct glyph gly[MAXCHAR]; /* glyph metrics */ 56 }; 57 58 struct termp_ps { 59 int flags; 60 #define PS_INLINE (1 << 0) /* we're in a word */ 61 #define PS_MARGINS (1 << 1) /* we're in the margins */ 62 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 63 size_t pscol; /* visible column (AFM units) */ 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; /* character buffer */ 69 enum termfont lastf; /* last set font */ 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 left; /* body left (AFM units) */ 78 size_t header; /* header pos (AFM units) */ 79 size_t footer; /* footer pos (AFM units) */ 80 size_t pdfbytes; /* current output byte */ 81 size_t pdflastpg; /* byte of last page mark */ 82 size_t pdfbody; /* start of body object */ 83 size_t *pdfobjs; /* table of object offsets */ 84 size_t pdfobjsz; /* size of pdfobjs */ 85 }; 86 87 static double ps_hspan(const struct termp *, 88 const struct roffsu *); 89 static size_t ps_width(const struct termp *, int); 90 static void ps_advance(struct termp *, size_t); 91 static void ps_begin(struct termp *); 92 static void ps_closepage(struct termp *); 93 static void ps_end(struct termp *); 94 static void ps_endline(struct termp *); 95 static void ps_fclose(struct termp *); 96 static void ps_growbuf(struct termp *, size_t); 97 static void ps_letter(struct termp *, int); 98 static void ps_pclose(struct termp *); 99 static void ps_pletter(struct termp *, int); 100 static void ps_printf(struct termp *, const char *, ...); 101 static void ps_putchar(struct termp *, char); 102 static void ps_setfont(struct termp *, enum termfont); 103 static struct termp *pspdf_alloc(char *); 104 static void pdf_obj(struct termp *, size_t); 105 106 /* 107 * We define, for the time being, three fonts: bold, oblique/italic, and 108 * normal (roman). The following table hard-codes the font metrics for 109 * ASCII, i.e., 32--127. 110 */ 111 112 static const struct font fonts[TERMFONT__MAX] = { 113 { "Times-Roman", { 114 { 250 }, 115 { 333 }, 116 { 408 }, 117 { 500 }, 118 { 500 }, 119 { 833 }, 120 { 778 }, 121 { 333 }, 122 { 333 }, 123 { 333 }, 124 { 500 }, 125 { 564 }, 126 { 250 }, 127 { 333 }, 128 { 250 }, 129 { 278 }, 130 { 500 }, 131 { 500 }, 132 { 500 }, 133 { 500 }, 134 { 500 }, 135 { 500 }, 136 { 500 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 278 }, 141 { 278 }, 142 { 564 }, 143 { 564 }, 144 { 564 }, 145 { 444 }, 146 { 921 }, 147 { 722 }, 148 { 667 }, 149 { 667 }, 150 { 722 }, 151 { 611 }, 152 { 556 }, 153 { 722 }, 154 { 722 }, 155 { 333 }, 156 { 389 }, 157 { 722 }, 158 { 611 }, 159 { 889 }, 160 { 722 }, 161 { 722 }, 162 { 556 }, 163 { 722 }, 164 { 667 }, 165 { 556 }, 166 { 611 }, 167 { 722 }, 168 { 722 }, 169 { 944 }, 170 { 722 }, 171 { 722 }, 172 { 611 }, 173 { 333 }, 174 { 278 }, 175 { 333 }, 176 { 469 }, 177 { 500 }, 178 { 333 }, 179 { 444 }, 180 { 500 }, 181 { 444 }, 182 { 500}, 183 { 444}, 184 { 333}, 185 { 500}, 186 { 500}, 187 { 278}, 188 { 278}, 189 { 500}, 190 { 278}, 191 { 778}, 192 { 500}, 193 { 500}, 194 { 500}, 195 { 500}, 196 { 333}, 197 { 389}, 198 { 278}, 199 { 500}, 200 { 500}, 201 { 722}, 202 { 500}, 203 { 500}, 204 { 444}, 205 { 480}, 206 { 200}, 207 { 480}, 208 { 541}, 209 } }, 210 { "Times-Bold", { 211 { 250 }, 212 { 333 }, 213 { 555 }, 214 { 500 }, 215 { 500 }, 216 { 1000 }, 217 { 833 }, 218 { 333 }, 219 { 333 }, 220 { 333 }, 221 { 500 }, 222 { 570 }, 223 { 250 }, 224 { 333 }, 225 { 250 }, 226 { 278 }, 227 { 500 }, 228 { 500 }, 229 { 500 }, 230 { 500 }, 231 { 500 }, 232 { 500 }, 233 { 500 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 333 }, 238 { 333 }, 239 { 570 }, 240 { 570 }, 241 { 570 }, 242 { 500 }, 243 { 930 }, 244 { 722 }, 245 { 667 }, 246 { 722 }, 247 { 722 }, 248 { 667 }, 249 { 611 }, 250 { 778 }, 251 { 778 }, 252 { 389 }, 253 { 500 }, 254 { 778 }, 255 { 667 }, 256 { 944 }, 257 { 722 }, 258 { 778 }, 259 { 611 }, 260 { 778 }, 261 { 722 }, 262 { 556 }, 263 { 667 }, 264 { 722 }, 265 { 722 }, 266 { 1000 }, 267 { 722 }, 268 { 722 }, 269 { 667 }, 270 { 333 }, 271 { 278 }, 272 { 333 }, 273 { 581 }, 274 { 500 }, 275 { 333 }, 276 { 500 }, 277 { 556 }, 278 { 444 }, 279 { 556 }, 280 { 444 }, 281 { 333 }, 282 { 500 }, 283 { 556 }, 284 { 278 }, 285 { 333 }, 286 { 556 }, 287 { 278 }, 288 { 833 }, 289 { 556 }, 290 { 500 }, 291 { 556 }, 292 { 556 }, 293 { 444 }, 294 { 389 }, 295 { 333 }, 296 { 556 }, 297 { 500 }, 298 { 722 }, 299 { 500 }, 300 { 500 }, 301 { 444 }, 302 { 394 }, 303 { 220 }, 304 { 394 }, 305 { 520 }, 306 } }, 307 { "Times-Italic", { 308 { 250 }, 309 { 333 }, 310 { 420 }, 311 { 500 }, 312 { 500 }, 313 { 833 }, 314 { 778 }, 315 { 333 }, 316 { 333 }, 317 { 333 }, 318 { 500 }, 319 { 675 }, 320 { 250 }, 321 { 333 }, 322 { 250 }, 323 { 278 }, 324 { 500 }, 325 { 500 }, 326 { 500 }, 327 { 500 }, 328 { 500 }, 329 { 500 }, 330 { 500 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 333 }, 335 { 333 }, 336 { 675 }, 337 { 675 }, 338 { 675 }, 339 { 500 }, 340 { 920 }, 341 { 611 }, 342 { 611 }, 343 { 667 }, 344 { 722 }, 345 { 611 }, 346 { 611 }, 347 { 722 }, 348 { 722 }, 349 { 333 }, 350 { 444 }, 351 { 667 }, 352 { 556 }, 353 { 833 }, 354 { 667 }, 355 { 722 }, 356 { 611 }, 357 { 722 }, 358 { 611 }, 359 { 500 }, 360 { 556 }, 361 { 722 }, 362 { 611 }, 363 { 833 }, 364 { 611 }, 365 { 556 }, 366 { 556 }, 367 { 389 }, 368 { 278 }, 369 { 389 }, 370 { 422 }, 371 { 500 }, 372 { 333 }, 373 { 500 }, 374 { 500 }, 375 { 444 }, 376 { 500 }, 377 { 444 }, 378 { 278 }, 379 { 500 }, 380 { 500 }, 381 { 278 }, 382 { 278 }, 383 { 444 }, 384 { 278 }, 385 { 722 }, 386 { 500 }, 387 { 500 }, 388 { 500 }, 389 { 500 }, 390 { 389 }, 391 { 389 }, 392 { 278 }, 393 { 500 }, 394 { 444 }, 395 { 667 }, 396 { 444 }, 397 { 444 }, 398 { 389 }, 399 { 400 }, 400 { 275 }, 401 { 400 }, 402 { 541 }, 403 } }, 404 }; 405 406 void * 407 pdf_alloc(char *outopts) 408 { 409 struct termp *p; 410 411 if (NULL != (p = pspdf_alloc(outopts))) 412 p->type = TERMTYPE_PDF; 413 414 return(p); 415 } 416 417 void * 418 ps_alloc(char *outopts) 419 { 420 struct termp *p; 421 422 if (NULL != (p = pspdf_alloc(outopts))) 423 p->type = TERMTYPE_PS; 424 425 return(p); 426 } 427 428 static struct termp * 429 pspdf_alloc(char *outopts) 430 { 431 struct termp *p; 432 unsigned int pagex, pagey; 433 size_t marginx, marginy, lineheight; 434 const char *toks[2]; 435 const char *pp; 436 char *v; 437 438 p = mandoc_calloc(1, sizeof(struct termp)); 439 p->enc = TERMENC_ASCII; 440 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 441 442 p->advance = ps_advance; 443 p->begin = ps_begin; 444 p->end = ps_end; 445 p->endline = ps_endline; 446 p->hspan = ps_hspan; 447 p->letter = ps_letter; 448 p->width = ps_width; 449 450 toks[0] = "paper"; 451 toks[1] = NULL; 452 453 pp = NULL; 454 455 while (outopts && *outopts) 456 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 457 case (0): 458 pp = v; 459 break; 460 default: 461 break; 462 } 463 464 /* Default to US letter (millimetres). */ 465 466 pagex = 216; 467 pagey = 279; 468 469 /* 470 * The ISO-269 paper sizes can be calculated automatically, but 471 * it would require bringing in -lm for pow() and I'd rather not 472 * do that. So just do it the easy way for now. Since this 473 * only happens once, I'm not terribly concerned. 474 */ 475 476 if (pp && strcasecmp(pp, "letter")) { 477 if (0 == strcasecmp(pp, "a3")) { 478 pagex = 297; 479 pagey = 420; 480 } else if (0 == strcasecmp(pp, "a4")) { 481 pagex = 210; 482 pagey = 297; 483 } else if (0 == strcasecmp(pp, "a5")) { 484 pagex = 148; 485 pagey = 210; 486 } else if (0 == strcasecmp(pp, "legal")) { 487 pagex = 216; 488 pagey = 356; 489 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 490 fprintf(stderr, "%s: Unknown paper\n", pp); 491 } 492 493 /* 494 * This MUST be defined before any PNT2AFM or AFM2PNT 495 * calculations occur. 496 */ 497 498 p->ps->scale = 11; 499 500 /* Remember millimetres -> AFM units. */ 501 502 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 503 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 504 505 /* Margins are 1/9 the page x and y. */ 506 507 marginx = /* LINTED */ 508 (size_t)((double)pagex / 9.0); 509 marginy = /* LINTED */ 510 (size_t)((double)pagey / 9.0); 511 512 /* Line-height is 1.4em. */ 513 514 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 515 516 p->ps->width = (size_t)pagex; 517 p->ps->height = (size_t)pagey; 518 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 519 p->ps->top = pagey - marginy; 520 p->ps->footer = (marginy / 2) - (lineheight / 2); 521 p->ps->bottom = marginy; 522 p->ps->left = marginx; 523 p->ps->lineheight = lineheight; 524 525 p->defrmargin = pagex - (marginx * 2); 526 return(p); 527 } 528 529 530 void 531 pspdf_free(void *arg) 532 { 533 struct termp *p; 534 535 p = (struct termp *)arg; 536 537 if (p->ps->psmarg) 538 free(p->ps->psmarg); 539 if (p->ps->pdfobjs) 540 free(p->ps->pdfobjs); 541 542 free(p->ps); 543 term_free(p); 544 } 545 546 547 static void 548 ps_printf(struct termp *p, const char *fmt, ...) 549 { 550 va_list ap; 551 int pos, len; 552 553 va_start(ap, fmt); 554 555 /* 556 * If we're running in regular mode, then pipe directly into 557 * vprintf(). If we're processing margins, then push the data 558 * into our growable margin buffer. 559 */ 560 561 if ( ! (PS_MARGINS & p->ps->flags)) { 562 len = vprintf(fmt, ap); 563 va_end(ap); 564 p->ps->pdfbytes += /* LINTED */ 565 len < 0 ? 0 : (size_t)len; 566 return; 567 } 568 569 /* 570 * XXX: I assume that the in-margin print won't exceed 571 * PS_BUFSLOP (128 bytes), which is reasonable but still an 572 * assumption that will cause pukeage if it's not the case. 573 */ 574 575 ps_growbuf(p, PS_BUFSLOP); 576 577 pos = (int)p->ps->psmargcur; 578 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 579 580 va_end(ap); 581 582 p->ps->psmargcur = strlen(p->ps->psmarg); 583 } 584 585 586 static void 587 ps_putchar(struct termp *p, char c) 588 { 589 int pos; 590 591 /* See ps_printf(). */ 592 593 if ( ! (PS_MARGINS & p->ps->flags)) { 594 /* LINTED */ 595 putchar(c); 596 p->ps->pdfbytes++; 597 return; 598 } 599 600 ps_growbuf(p, 2); 601 602 pos = (int)p->ps->psmargcur++; 603 p->ps->psmarg[pos++] = c; 604 p->ps->psmarg[pos] = '\0'; 605 } 606 607 608 static void 609 pdf_obj(struct termp *p, size_t obj) 610 { 611 612 assert(obj > 0); 613 614 if ((obj - 1) >= p->ps->pdfobjsz) { 615 p->ps->pdfobjsz = obj + 128; 616 p->ps->pdfobjs = realloc 617 (p->ps->pdfobjs, 618 p->ps->pdfobjsz * sizeof(size_t)); 619 if (NULL == p->ps->pdfobjs) { 620 perror(NULL); 621 exit((int)MANDOCLEVEL_SYSERR); 622 } 623 } 624 625 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 626 ps_printf(p, "%zu 0 obj\n", obj); 627 } 628 629 630 static void 631 ps_closepage(struct termp *p) 632 { 633 int i; 634 size_t len, base; 635 636 /* 637 * Close out a page that we've already flushed to output. In 638 * PostScript, we simply note that the page must be showed. In 639 * PDF, we must now create the Length, Resource, and Page node 640 * for the page contents. 641 */ 642 643 assert(p->ps->psmarg && p->ps->psmarg[0]); 644 ps_printf(p, "%s", p->ps->psmarg); 645 646 if (TERMTYPE_PS != p->type) { 647 ps_printf(p, "ET\n"); 648 649 len = p->ps->pdfbytes - p->ps->pdflastpg; 650 base = p->ps->pages * 4 + p->ps->pdfbody; 651 652 ps_printf(p, "endstream\nendobj\n"); 653 654 /* Length of content. */ 655 pdf_obj(p, base + 1); 656 ps_printf(p, "%zu\nendobj\n", len); 657 658 /* Resource for content. */ 659 pdf_obj(p, base + 2); 660 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 661 ps_printf(p, "/Font <<\n"); 662 for (i = 0; i < (int)TERMFONT__MAX; i++) 663 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 664 ps_printf(p, ">>\n>>\n"); 665 666 /* Page node. */ 667 pdf_obj(p, base + 3); 668 ps_printf(p, "<<\n"); 669 ps_printf(p, "/Type /Page\n"); 670 ps_printf(p, "/Parent 2 0 R\n"); 671 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 672 ps_printf(p, "/Contents %zu 0 R\n", base); 673 ps_printf(p, ">>\nendobj\n"); 674 } else 675 ps_printf(p, "showpage\n"); 676 677 p->ps->pages++; 678 p->ps->psrow = p->ps->top; 679 assert( ! (PS_NEWPAGE & p->ps->flags)); 680 p->ps->flags |= PS_NEWPAGE; 681 } 682 683 684 /* ARGSUSED */ 685 static void 686 ps_end(struct termp *p) 687 { 688 size_t i, xref, base; 689 690 /* 691 * At the end of the file, do one last showpage. This is the 692 * same behaviour as groff(1) and works for multiple pages as 693 * well as just one. 694 */ 695 696 if ( ! (PS_NEWPAGE & p->ps->flags)) { 697 assert(0 == p->ps->flags); 698 assert('\0' == p->ps->last); 699 ps_closepage(p); 700 } 701 702 if (TERMTYPE_PS == p->type) { 703 ps_printf(p, "%%%%Trailer\n"); 704 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 705 ps_printf(p, "%%%%EOF\n"); 706 return; 707 } 708 709 pdf_obj(p, 2); 710 ps_printf(p, "<<\n/Type /Pages\n"); 711 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 712 (size_t)AFM2PNT(p, p->ps->width), 713 (size_t)AFM2PNT(p, p->ps->height)); 714 715 ps_printf(p, "/Count %zu\n", p->ps->pages); 716 ps_printf(p, "/Kids ["); 717 718 for (i = 0; i < p->ps->pages; i++) 719 ps_printf(p, " %zu 0 R", i * 4 + 720 p->ps->pdfbody + 3); 721 722 base = (p->ps->pages - 1) * 4 + 723 p->ps->pdfbody + 4; 724 725 ps_printf(p, "]\n>>\nendobj\n"); 726 pdf_obj(p, base); 727 ps_printf(p, "<<\n"); 728 ps_printf(p, "/Type /Catalog\n"); 729 ps_printf(p, "/Pages 2 0 R\n"); 730 ps_printf(p, ">>\n"); 731 xref = p->ps->pdfbytes; 732 ps_printf(p, "xref\n"); 733 ps_printf(p, "0 %zu\n", base + 1); 734 ps_printf(p, "0000000000 65535 f \n"); 735 736 for (i = 0; i < base; i++) 737 ps_printf(p, "%.10zu 00000 n \n", 738 p->ps->pdfobjs[(int)i]); 739 740 ps_printf(p, "trailer\n"); 741 ps_printf(p, "<<\n"); 742 ps_printf(p, "/Size %zu\n", base + 1); 743 ps_printf(p, "/Root %zu 0 R\n", base); 744 ps_printf(p, "/Info 1 0 R\n"); 745 ps_printf(p, ">>\n"); 746 ps_printf(p, "startxref\n"); 747 ps_printf(p, "%zu\n", xref); 748 ps_printf(p, "%%%%EOF\n"); 749 } 750 751 752 static void 753 ps_begin(struct termp *p) 754 { 755 time_t t; 756 int i; 757 758 /* 759 * Print margins into margin buffer. Nothing gets output to the 760 * screen yet, so we don't need to initialise the primary state. 761 */ 762 763 if (p->ps->psmarg) { 764 assert(p->ps->psmargsz); 765 p->ps->psmarg[0] = '\0'; 766 } 767 768 /*p->ps->pdfbytes = 0;*/ 769 p->ps->psmargcur = 0; 770 p->ps->flags = PS_MARGINS; 771 p->ps->pscol = p->ps->left; 772 p->ps->psrow = p->ps->header; 773 774 ps_setfont(p, TERMFONT_NONE); 775 776 (*p->headf)(p, p->argf); 777 (*p->endline)(p); 778 779 p->ps->pscol = p->ps->left; 780 p->ps->psrow = p->ps->footer; 781 782 (*p->footf)(p, p->argf); 783 (*p->endline)(p); 784 785 p->ps->flags &= ~PS_MARGINS; 786 787 assert(0 == p->ps->flags); 788 assert(p->ps->psmarg); 789 assert('\0' != p->ps->psmarg[0]); 790 791 /* 792 * Print header and initialise page state. Following this, 793 * stuff gets printed to the screen, so make sure we're sane. 794 */ 795 796 t = time(NULL); 797 798 if (TERMTYPE_PS == p->type) { 799 ps_printf(p, "%%!PS-Adobe-3.0\n"); 800 ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); 801 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 802 ps_printf(p, "%%%%Orientation: Portrait\n"); 803 ps_printf(p, "%%%%Pages: (atend)\n"); 804 ps_printf(p, "%%%%PageOrder: Ascend\n"); 805 ps_printf(p, "%%%%DocumentMedia: " 806 "Default %zu %zu 0 () ()\n", 807 (size_t)AFM2PNT(p, p->ps->width), 808 (size_t)AFM2PNT(p, p->ps->height)); 809 ps_printf(p, "%%%%DocumentNeededResources: font"); 810 811 for (i = 0; i < (int)TERMFONT__MAX; i++) 812 ps_printf(p, " %s", fonts[i].name); 813 814 ps_printf(p, "\n%%%%EndComments\n"); 815 } else { 816 ps_printf(p, "%%PDF-1.1\n"); 817 pdf_obj(p, 1); 818 ps_printf(p, "<<\n"); 819 ps_printf(p, ">>\n"); 820 ps_printf(p, "endobj\n"); 821 822 for (i = 0; i < (int)TERMFONT__MAX; i++) { 823 pdf_obj(p, (size_t)i + 3); 824 ps_printf(p, "<<\n"); 825 ps_printf(p, "/Type /Font\n"); 826 ps_printf(p, "/Subtype /Type1\n"); 827 ps_printf(p, "/Name /F%zu\n", i); 828 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 829 ps_printf(p, ">>\n"); 830 } 831 } 832 833 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 834 p->ps->pscol = p->ps->left; 835 p->ps->psrow = p->ps->top; 836 p->ps->flags |= PS_NEWPAGE; 837 ps_setfont(p, TERMFONT_NONE); 838 } 839 840 841 static void 842 ps_pletter(struct termp *p, int c) 843 { 844 int f; 845 846 /* 847 * If we haven't opened a page context, then output that we're 848 * in a new page and make sure the font is correctly set. 849 */ 850 851 if (PS_NEWPAGE & p->ps->flags) { 852 if (TERMTYPE_PS == p->type) { 853 ps_printf(p, "%%%%Page: %zu %zu\n", 854 p->ps->pages + 1, 855 p->ps->pages + 1); 856 ps_printf(p, "/%s %zu selectfont\n", 857 fonts[(int)p->ps->lastf].name, 858 p->ps->scale); 859 } else { 860 pdf_obj(p, p->ps->pdfbody + 861 p->ps->pages * 4); 862 ps_printf(p, "<<\n"); 863 ps_printf(p, "/Length %zu 0 R\n", 864 p->ps->pdfbody + 1 + 865 p->ps->pages * 4); 866 ps_printf(p, ">>\nstream\n"); 867 } 868 p->ps->pdflastpg = p->ps->pdfbytes; 869 p->ps->flags &= ~PS_NEWPAGE; 870 } 871 872 /* 873 * If we're not in a PostScript "word" context, then open one 874 * now at the current cursor. 875 */ 876 877 if ( ! (PS_INLINE & p->ps->flags)) { 878 if (TERMTYPE_PS != p->type) { 879 ps_printf(p, "BT\n/F%d %zu Tf\n", 880 (int)p->ps->lastf, 881 p->ps->scale); 882 ps_printf(p, "%.3f %.3f Td\n(", 883 AFM2PNT(p, p->ps->pscol), 884 AFM2PNT(p, p->ps->psrow)); 885 } else 886 ps_printf(p, "%.3f %.3f moveto\n(", 887 AFM2PNT(p, p->ps->pscol), 888 AFM2PNT(p, p->ps->psrow)); 889 p->ps->flags |= PS_INLINE; 890 } 891 892 assert( ! (PS_NEWPAGE & p->ps->flags)); 893 894 /* 895 * We need to escape these characters as per the PostScript 896 * specification. We would also escape non-graphable characters 897 * (like tabs), but none of them would get to this point and 898 * it's superfluous to abort() on them. 899 */ 900 901 switch (c) { 902 case ('('): 903 /* FALLTHROUGH */ 904 case (')'): 905 /* FALLTHROUGH */ 906 case ('\\'): 907 ps_putchar(p, '\\'); 908 break; 909 default: 910 break; 911 } 912 913 /* Write the character and adjust where we are on the page. */ 914 915 f = (int)p->ps->lastf; 916 917 if (c <= 32 || (c - 32 >= MAXCHAR)) { 918 ps_putchar(p, ' '); 919 p->ps->pscol += (size_t)fonts[f].gly[0].wx; 920 return; 921 } 922 923 ps_putchar(p, (char)c); 924 c -= 32; 925 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 926 } 927 928 929 static void 930 ps_pclose(struct termp *p) 931 { 932 933 /* 934 * Spit out that we're exiting a word context (this is a 935 * "partial close" because we don't check the last-char buffer 936 * or anything). 937 */ 938 939 if ( ! (PS_INLINE & p->ps->flags)) 940 return; 941 942 if (TERMTYPE_PS != p->type) { 943 ps_printf(p, ") Tj\nET\n"); 944 } else 945 ps_printf(p, ") show\n"); 946 947 p->ps->flags &= ~PS_INLINE; 948 } 949 950 951 static void 952 ps_fclose(struct termp *p) 953 { 954 955 /* 956 * Strong closure: if we have a last-char, spit it out after 957 * checking that we're in the right font mode. This will of 958 * course open a new scope, if applicable. 959 * 960 * Following this, close out any scope that's open. 961 */ 962 963 if ('\0' != p->ps->last) { 964 if (p->ps->lastf != TERMFONT_NONE) { 965 ps_pclose(p); 966 ps_setfont(p, TERMFONT_NONE); 967 } 968 ps_pletter(p, p->ps->last); 969 p->ps->last = '\0'; 970 } 971 972 if ( ! (PS_INLINE & p->ps->flags)) 973 return; 974 975 ps_pclose(p); 976 } 977 978 979 static void 980 ps_letter(struct termp *p, int arg) 981 { 982 char cc, c; 983 984 /* LINTED */ 985 c = arg >= 128 || arg <= 0 ? '?' : arg; 986 987 /* 988 * State machine dictates whether to buffer the last character 989 * or not. Basically, encoded words are detected by checking if 990 * we're an "8" and switching on the buffer. Then we put "8" in 991 * our buffer, and on the next charater, flush both character 992 * and buffer. Thus, "regular" words are detected by having a 993 * regular character and a regular buffer character. 994 */ 995 996 if ('\0' == p->ps->last) { 997 assert(8 != c); 998 p->ps->last = c; 999 return; 1000 } else if (8 == p->ps->last) { 1001 assert(8 != c); 1002 p->ps->last = '\0'; 1003 } else if (8 == c) { 1004 assert(8 != p->ps->last); 1005 if ('_' == p->ps->last) { 1006 if (p->ps->lastf != TERMFONT_UNDER) { 1007 ps_pclose(p); 1008 ps_setfont(p, TERMFONT_UNDER); 1009 } 1010 } else if (p->ps->lastf != TERMFONT_BOLD) { 1011 ps_pclose(p); 1012 ps_setfont(p, TERMFONT_BOLD); 1013 } 1014 p->ps->last = c; 1015 return; 1016 } else { 1017 if (p->ps->lastf != TERMFONT_NONE) { 1018 ps_pclose(p); 1019 ps_setfont(p, TERMFONT_NONE); 1020 } 1021 cc = p->ps->last; 1022 p->ps->last = c; 1023 c = cc; 1024 } 1025 1026 ps_pletter(p, c); 1027 } 1028 1029 1030 static void 1031 ps_advance(struct termp *p, size_t len) 1032 { 1033 1034 /* 1035 * Advance some spaces. This can probably be made smarter, 1036 * i.e., to have multiple space-separated words in the same 1037 * scope, but this is easier: just close out the current scope 1038 * and readjust our column settings. 1039 */ 1040 1041 ps_fclose(p); 1042 p->ps->pscol += len; 1043 } 1044 1045 1046 static void 1047 ps_endline(struct termp *p) 1048 { 1049 1050 /* Close out any scopes we have open: we're at eoln. */ 1051 1052 ps_fclose(p); 1053 1054 /* 1055 * If we're in the margin, don't try to recalculate our current 1056 * row. XXX: if the column tries to be fancy with multiple 1057 * lines, we'll do nasty stuff. 1058 */ 1059 1060 if (PS_MARGINS & p->ps->flags) 1061 return; 1062 1063 /* Left-justify. */ 1064 1065 p->ps->pscol = p->ps->left; 1066 1067 /* If we haven't printed anything, return. */ 1068 1069 if (PS_NEWPAGE & p->ps->flags) 1070 return; 1071 1072 /* 1073 * Put us down a line. If we're at the page bottom, spit out a 1074 * showpage and restart our row. 1075 */ 1076 1077 if (p->ps->psrow >= p->ps->lineheight + 1078 p->ps->bottom) { 1079 p->ps->psrow -= p->ps->lineheight; 1080 return; 1081 } 1082 1083 ps_closepage(p); 1084 } 1085 1086 1087 static void 1088 ps_setfont(struct termp *p, enum termfont f) 1089 { 1090 1091 assert(f < TERMFONT__MAX); 1092 p->ps->lastf = f; 1093 1094 /* 1095 * If we're still at the top of the page, let the font-setting 1096 * be delayed until we actually have stuff to print. 1097 */ 1098 1099 if (PS_NEWPAGE & p->ps->flags) 1100 return; 1101 1102 if (TERMTYPE_PS == p->type) 1103 ps_printf(p, "/%s %zu selectfont\n", 1104 fonts[(int)f].name, 1105 p->ps->scale); 1106 else 1107 ps_printf(p, "/F%d %zu Tf\n", 1108 (int)f, 1109 p->ps->scale); 1110 } 1111 1112 1113 /* ARGSUSED */ 1114 static size_t 1115 ps_width(const struct termp *p, int c) 1116 { 1117 1118 if (c <= 32 || c - 32 >= MAXCHAR) 1119 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx); 1120 1121 c -= 32; 1122 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1123 } 1124 1125 1126 static double 1127 ps_hspan(const struct termp *p, const struct roffsu *su) 1128 { 1129 double r; 1130 1131 /* 1132 * All of these measurements are derived by converting from the 1133 * native measurement to AFM units. 1134 */ 1135 1136 switch (su->unit) { 1137 case (SCALE_CM): 1138 r = PNT2AFM(p, su->scale * 28.34); 1139 break; 1140 case (SCALE_IN): 1141 r = PNT2AFM(p, su->scale * 72); 1142 break; 1143 case (SCALE_PC): 1144 r = PNT2AFM(p, su->scale * 12); 1145 break; 1146 case (SCALE_PT): 1147 r = PNT2AFM(p, su->scale * 100); 1148 break; 1149 case (SCALE_EM): 1150 r = su->scale * 1151 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1152 break; 1153 case (SCALE_MM): 1154 r = PNT2AFM(p, su->scale * 2.834); 1155 break; 1156 case (SCALE_EN): 1157 r = su->scale * 1158 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1159 break; 1160 case (SCALE_VS): 1161 r = su->scale * p->ps->lineheight; 1162 break; 1163 default: 1164 r = su->scale; 1165 break; 1166 } 1167 1168 return(r); 1169 } 1170 1171 static void 1172 ps_growbuf(struct termp *p, size_t sz) 1173 { 1174 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1175 return; 1176 1177 if (sz < PS_BUFSLOP) 1178 sz = PS_BUFSLOP; 1179 1180 p->ps->psmargsz += sz; 1181 1182 p->ps->psmarg = mandoc_realloc 1183 (p->ps->psmarg, p->ps->psmargsz); 1184 } 1185 1186