1 /* $Id: term_ps.c,v 1.18 2011/09/18 15:54:48 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 } else if (NULL == pp) 492 pp = "letter"; 493 494 /* 495 * This MUST be defined before any PNT2AFM or AFM2PNT 496 * calculations occur. 497 */ 498 499 p->ps->scale = 11; 500 501 /* Remember millimetres -> AFM units. */ 502 503 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 504 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 505 506 /* Margins are 1/9 the page x and y. */ 507 508 marginx = /* LINTED */ 509 (size_t)((double)pagex / 9.0); 510 marginy = /* LINTED */ 511 (size_t)((double)pagey / 9.0); 512 513 /* Line-height is 1.4em. */ 514 515 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 516 517 p->ps->width = (size_t)pagex; 518 p->ps->height = (size_t)pagey; 519 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 520 p->ps->top = pagey - marginy; 521 p->ps->footer = (marginy / 2) - (lineheight / 2); 522 p->ps->bottom = marginy; 523 p->ps->left = marginx; 524 p->ps->lineheight = lineheight; 525 526 p->defrmargin = pagex - (marginx * 2); 527 return(p); 528 } 529 530 531 void 532 pspdf_free(void *arg) 533 { 534 struct termp *p; 535 536 p = (struct termp *)arg; 537 538 if (p->ps->psmarg) 539 free(p->ps->psmarg); 540 if (p->ps->pdfobjs) 541 free(p->ps->pdfobjs); 542 543 free(p->ps); 544 term_free(p); 545 } 546 547 548 static void 549 ps_printf(struct termp *p, const char *fmt, ...) 550 { 551 va_list ap; 552 int pos, len; 553 554 va_start(ap, fmt); 555 556 /* 557 * If we're running in regular mode, then pipe directly into 558 * vprintf(). If we're processing margins, then push the data 559 * into our growable margin buffer. 560 */ 561 562 if ( ! (PS_MARGINS & p->ps->flags)) { 563 len = vprintf(fmt, ap); 564 va_end(ap); 565 p->ps->pdfbytes += /* LINTED */ 566 len < 0 ? 0 : (size_t)len; 567 return; 568 } 569 570 /* 571 * XXX: I assume that the in-margin print won't exceed 572 * PS_BUFSLOP (128 bytes), which is reasonable but still an 573 * assumption that will cause pukeage if it's not the case. 574 */ 575 576 ps_growbuf(p, PS_BUFSLOP); 577 578 pos = (int)p->ps->psmargcur; 579 len = vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 580 581 va_end(ap); 582 583 p->ps->psmargcur = strlen(p->ps->psmarg); 584 } 585 586 587 static void 588 ps_putchar(struct termp *p, char c) 589 { 590 int pos; 591 592 /* See ps_printf(). */ 593 594 if ( ! (PS_MARGINS & p->ps->flags)) { 595 /* LINTED */ 596 putchar(c); 597 p->ps->pdfbytes++; 598 return; 599 } 600 601 ps_growbuf(p, 2); 602 603 pos = (int)p->ps->psmargcur++; 604 p->ps->psmarg[pos++] = c; 605 p->ps->psmarg[pos] = '\0'; 606 } 607 608 609 static void 610 pdf_obj(struct termp *p, size_t obj) 611 { 612 613 assert(obj > 0); 614 615 if ((obj - 1) >= p->ps->pdfobjsz) { 616 p->ps->pdfobjsz = obj + 128; 617 p->ps->pdfobjs = realloc 618 (p->ps->pdfobjs, 619 p->ps->pdfobjsz * sizeof(size_t)); 620 if (NULL == p->ps->pdfobjs) { 621 perror(NULL); 622 exit((int)MANDOCLEVEL_SYSERR); 623 } 624 } 625 626 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 627 ps_printf(p, "%zu 0 obj\n", obj); 628 } 629 630 631 static void 632 ps_closepage(struct termp *p) 633 { 634 int i; 635 size_t len, base; 636 637 /* 638 * Close out a page that we've already flushed to output. In 639 * PostScript, we simply note that the page must be showed. In 640 * PDF, we must now create the Length, Resource, and Page node 641 * for the page contents. 642 */ 643 644 assert(p->ps->psmarg && p->ps->psmarg[0]); 645 ps_printf(p, "%s", p->ps->psmarg); 646 647 if (TERMTYPE_PS != p->type) { 648 ps_printf(p, "ET\n"); 649 650 len = p->ps->pdfbytes - p->ps->pdflastpg; 651 base = p->ps->pages * 4 + p->ps->pdfbody; 652 653 ps_printf(p, "endstream\nendobj\n"); 654 655 /* Length of content. */ 656 pdf_obj(p, base + 1); 657 ps_printf(p, "%zu\nendobj\n", len); 658 659 /* Resource for content. */ 660 pdf_obj(p, base + 2); 661 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 662 ps_printf(p, "/Font <<\n"); 663 for (i = 0; i < (int)TERMFONT__MAX; i++) 664 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 665 ps_printf(p, ">>\n>>\n"); 666 667 /* Page node. */ 668 pdf_obj(p, base + 3); 669 ps_printf(p, "<<\n"); 670 ps_printf(p, "/Type /Page\n"); 671 ps_printf(p, "/Parent 2 0 R\n"); 672 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 673 ps_printf(p, "/Contents %zu 0 R\n", base); 674 ps_printf(p, ">>\nendobj\n"); 675 } else 676 ps_printf(p, "showpage\n"); 677 678 p->ps->pages++; 679 p->ps->psrow = p->ps->top; 680 assert( ! (PS_NEWPAGE & p->ps->flags)); 681 p->ps->flags |= PS_NEWPAGE; 682 } 683 684 685 /* ARGSUSED */ 686 static void 687 ps_end(struct termp *p) 688 { 689 size_t i, xref, base; 690 691 /* 692 * At the end of the file, do one last showpage. This is the 693 * same behaviour as groff(1) and works for multiple pages as 694 * well as just one. 695 */ 696 697 if ( ! (PS_NEWPAGE & p->ps->flags)) { 698 assert(0 == p->ps->flags); 699 assert('\0' == p->ps->last); 700 ps_closepage(p); 701 } 702 703 if (TERMTYPE_PS == p->type) { 704 ps_printf(p, "%%%%Trailer\n"); 705 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 706 ps_printf(p, "%%%%EOF\n"); 707 return; 708 } 709 710 pdf_obj(p, 2); 711 ps_printf(p, "<<\n/Type /Pages\n"); 712 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 713 (size_t)AFM2PNT(p, p->ps->width), 714 (size_t)AFM2PNT(p, p->ps->height)); 715 716 ps_printf(p, "/Count %zu\n", p->ps->pages); 717 ps_printf(p, "/Kids ["); 718 719 for (i = 0; i < p->ps->pages; i++) 720 ps_printf(p, " %zu 0 R", i * 4 + 721 p->ps->pdfbody + 3); 722 723 base = (p->ps->pages - 1) * 4 + 724 p->ps->pdfbody + 4; 725 726 ps_printf(p, "]\n>>\nendobj\n"); 727 pdf_obj(p, base); 728 ps_printf(p, "<<\n"); 729 ps_printf(p, "/Type /Catalog\n"); 730 ps_printf(p, "/Pages 2 0 R\n"); 731 ps_printf(p, ">>\n"); 732 xref = p->ps->pdfbytes; 733 ps_printf(p, "xref\n"); 734 ps_printf(p, "0 %zu\n", base + 1); 735 ps_printf(p, "0000000000 65535 f \n"); 736 737 for (i = 0; i < base; i++) 738 ps_printf(p, "%.10zu 00000 n \n", 739 p->ps->pdfobjs[(int)i]); 740 741 ps_printf(p, "trailer\n"); 742 ps_printf(p, "<<\n"); 743 ps_printf(p, "/Size %zu\n", base + 1); 744 ps_printf(p, "/Root %zu 0 R\n", base); 745 ps_printf(p, "/Info 1 0 R\n"); 746 ps_printf(p, ">>\n"); 747 ps_printf(p, "startxref\n"); 748 ps_printf(p, "%zu\n", xref); 749 ps_printf(p, "%%%%EOF\n"); 750 } 751 752 753 static void 754 ps_begin(struct termp *p) 755 { 756 time_t t; 757 int i; 758 759 /* 760 * Print margins into margin buffer. Nothing gets output to the 761 * screen yet, so we don't need to initialise the primary state. 762 */ 763 764 if (p->ps->psmarg) { 765 assert(p->ps->psmargsz); 766 p->ps->psmarg[0] = '\0'; 767 } 768 769 /*p->ps->pdfbytes = 0;*/ 770 p->ps->psmargcur = 0; 771 p->ps->flags = PS_MARGINS; 772 p->ps->pscol = p->ps->left; 773 p->ps->psrow = p->ps->header; 774 775 ps_setfont(p, TERMFONT_NONE); 776 777 (*p->headf)(p, p->argf); 778 (*p->endline)(p); 779 780 p->ps->pscol = p->ps->left; 781 p->ps->psrow = p->ps->footer; 782 783 (*p->footf)(p, p->argf); 784 (*p->endline)(p); 785 786 p->ps->flags &= ~PS_MARGINS; 787 788 assert(0 == p->ps->flags); 789 assert(p->ps->psmarg); 790 assert('\0' != p->ps->psmarg[0]); 791 792 /* 793 * Print header and initialise page state. Following this, 794 * stuff gets printed to the screen, so make sure we're sane. 795 */ 796 797 t = time(NULL); 798 799 if (TERMTYPE_PS == p->type) { 800 ps_printf(p, "%%!PS-Adobe-3.0\n"); 801 ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); 802 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 803 ps_printf(p, "%%%%Orientation: Portrait\n"); 804 ps_printf(p, "%%%%Pages: (atend)\n"); 805 ps_printf(p, "%%%%PageOrder: Ascend\n"); 806 ps_printf(p, "%%%%DocumentMedia: " 807 "Default %zu %zu 0 () ()\n", 808 (size_t)AFM2PNT(p, p->ps->width), 809 (size_t)AFM2PNT(p, p->ps->height)); 810 ps_printf(p, "%%%%DocumentNeededResources: font"); 811 812 for (i = 0; i < (int)TERMFONT__MAX; i++) 813 ps_printf(p, " %s", fonts[i].name); 814 815 ps_printf(p, "\n%%%%EndComments\n"); 816 } else { 817 ps_printf(p, "%%PDF-1.1\n"); 818 pdf_obj(p, 1); 819 ps_printf(p, "<<\n"); 820 ps_printf(p, ">>\n"); 821 ps_printf(p, "endobj\n"); 822 823 for (i = 0; i < (int)TERMFONT__MAX; i++) { 824 pdf_obj(p, (size_t)i + 3); 825 ps_printf(p, "<<\n"); 826 ps_printf(p, "/Type /Font\n"); 827 ps_printf(p, "/Subtype /Type1\n"); 828 ps_printf(p, "/Name /F%zu\n", i); 829 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 830 ps_printf(p, ">>\n"); 831 } 832 } 833 834 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 835 p->ps->pscol = p->ps->left; 836 p->ps->psrow = p->ps->top; 837 p->ps->flags |= PS_NEWPAGE; 838 ps_setfont(p, TERMFONT_NONE); 839 } 840 841 842 static void 843 ps_pletter(struct termp *p, int c) 844 { 845 int f; 846 847 /* 848 * If we haven't opened a page context, then output that we're 849 * in a new page and make sure the font is correctly set. 850 */ 851 852 if (PS_NEWPAGE & p->ps->flags) { 853 if (TERMTYPE_PS == p->type) { 854 ps_printf(p, "%%%%Page: %zu %zu\n", 855 p->ps->pages + 1, 856 p->ps->pages + 1); 857 ps_printf(p, "/%s %zu selectfont\n", 858 fonts[(int)p->ps->lastf].name, 859 p->ps->scale); 860 } else { 861 pdf_obj(p, p->ps->pdfbody + 862 p->ps->pages * 4); 863 ps_printf(p, "<<\n"); 864 ps_printf(p, "/Length %zu 0 R\n", 865 p->ps->pdfbody + 1 + 866 p->ps->pages * 4); 867 ps_printf(p, ">>\nstream\n"); 868 } 869 p->ps->pdflastpg = p->ps->pdfbytes; 870 p->ps->flags &= ~PS_NEWPAGE; 871 } 872 873 /* 874 * If we're not in a PostScript "word" context, then open one 875 * now at the current cursor. 876 */ 877 878 if ( ! (PS_INLINE & p->ps->flags)) { 879 if (TERMTYPE_PS != p->type) { 880 ps_printf(p, "BT\n/F%d %zu Tf\n", 881 (int)p->ps->lastf, 882 p->ps->scale); 883 ps_printf(p, "%.3f %.3f Td\n(", 884 AFM2PNT(p, p->ps->pscol), 885 AFM2PNT(p, p->ps->psrow)); 886 } else 887 ps_printf(p, "%.3f %.3f moveto\n(", 888 AFM2PNT(p, p->ps->pscol), 889 AFM2PNT(p, p->ps->psrow)); 890 p->ps->flags |= PS_INLINE; 891 } 892 893 assert( ! (PS_NEWPAGE & p->ps->flags)); 894 895 /* 896 * We need to escape these characters as per the PostScript 897 * specification. We would also escape non-graphable characters 898 * (like tabs), but none of them would get to this point and 899 * it's superfluous to abort() on them. 900 */ 901 902 switch (c) { 903 case ('('): 904 /* FALLTHROUGH */ 905 case (')'): 906 /* FALLTHROUGH */ 907 case ('\\'): 908 ps_putchar(p, '\\'); 909 break; 910 default: 911 break; 912 } 913 914 /* Write the character and adjust where we are on the page. */ 915 916 f = (int)p->ps->lastf; 917 918 if (c <= 32 || (c - 32 >= MAXCHAR)) { 919 ps_putchar(p, ' '); 920 p->ps->pscol += (size_t)fonts[f].gly[0].wx; 921 return; 922 } 923 924 ps_putchar(p, (char)c); 925 c -= 32; 926 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 927 } 928 929 930 static void 931 ps_pclose(struct termp *p) 932 { 933 934 /* 935 * Spit out that we're exiting a word context (this is a 936 * "partial close" because we don't check the last-char buffer 937 * or anything). 938 */ 939 940 if ( ! (PS_INLINE & p->ps->flags)) 941 return; 942 943 if (TERMTYPE_PS != p->type) { 944 ps_printf(p, ") Tj\nET\n"); 945 } else 946 ps_printf(p, ") show\n"); 947 948 p->ps->flags &= ~PS_INLINE; 949 } 950 951 952 static void 953 ps_fclose(struct termp *p) 954 { 955 956 /* 957 * Strong closure: if we have a last-char, spit it out after 958 * checking that we're in the right font mode. This will of 959 * course open a new scope, if applicable. 960 * 961 * Following this, close out any scope that's open. 962 */ 963 964 if ('\0' != p->ps->last) { 965 if (p->ps->lastf != TERMFONT_NONE) { 966 ps_pclose(p); 967 ps_setfont(p, TERMFONT_NONE); 968 } 969 ps_pletter(p, p->ps->last); 970 p->ps->last = '\0'; 971 } 972 973 if ( ! (PS_INLINE & p->ps->flags)) 974 return; 975 976 ps_pclose(p); 977 } 978 979 980 static void 981 ps_letter(struct termp *p, int arg) 982 { 983 char cc, c; 984 985 /* LINTED */ 986 c = arg >= 128 || arg <= 0 ? '?' : arg; 987 988 /* 989 * State machine dictates whether to buffer the last character 990 * or not. Basically, encoded words are detected by checking if 991 * we're an "8" and switching on the buffer. Then we put "8" in 992 * our buffer, and on the next charater, flush both character 993 * and buffer. Thus, "regular" words are detected by having a 994 * regular character and a regular buffer character. 995 */ 996 997 if ('\0' == p->ps->last) { 998 assert(8 != c); 999 p->ps->last = c; 1000 return; 1001 } else if (8 == p->ps->last) { 1002 assert(8 != c); 1003 p->ps->last = '\0'; 1004 } else if (8 == c) { 1005 assert(8 != p->ps->last); 1006 if ('_' == p->ps->last) { 1007 if (p->ps->lastf != TERMFONT_UNDER) { 1008 ps_pclose(p); 1009 ps_setfont(p, TERMFONT_UNDER); 1010 } 1011 } else if (p->ps->lastf != TERMFONT_BOLD) { 1012 ps_pclose(p); 1013 ps_setfont(p, TERMFONT_BOLD); 1014 } 1015 p->ps->last = c; 1016 return; 1017 } else { 1018 if (p->ps->lastf != TERMFONT_NONE) { 1019 ps_pclose(p); 1020 ps_setfont(p, TERMFONT_NONE); 1021 } 1022 cc = p->ps->last; 1023 p->ps->last = c; 1024 c = cc; 1025 } 1026 1027 ps_pletter(p, c); 1028 } 1029 1030 1031 static void 1032 ps_advance(struct termp *p, size_t len) 1033 { 1034 1035 /* 1036 * Advance some spaces. This can probably be made smarter, 1037 * i.e., to have multiple space-separated words in the same 1038 * scope, but this is easier: just close out the current scope 1039 * and readjust our column settings. 1040 */ 1041 1042 ps_fclose(p); 1043 p->ps->pscol += len; 1044 } 1045 1046 1047 static void 1048 ps_endline(struct termp *p) 1049 { 1050 1051 /* Close out any scopes we have open: we're at eoln. */ 1052 1053 ps_fclose(p); 1054 1055 /* 1056 * If we're in the margin, don't try to recalculate our current 1057 * row. XXX: if the column tries to be fancy with multiple 1058 * lines, we'll do nasty stuff. 1059 */ 1060 1061 if (PS_MARGINS & p->ps->flags) 1062 return; 1063 1064 /* Left-justify. */ 1065 1066 p->ps->pscol = p->ps->left; 1067 1068 /* If we haven't printed anything, return. */ 1069 1070 if (PS_NEWPAGE & p->ps->flags) 1071 return; 1072 1073 /* 1074 * Put us down a line. If we're at the page bottom, spit out a 1075 * showpage and restart our row. 1076 */ 1077 1078 if (p->ps->psrow >= p->ps->lineheight + 1079 p->ps->bottom) { 1080 p->ps->psrow -= p->ps->lineheight; 1081 return; 1082 } 1083 1084 ps_closepage(p); 1085 } 1086 1087 1088 static void 1089 ps_setfont(struct termp *p, enum termfont f) 1090 { 1091 1092 assert(f < TERMFONT__MAX); 1093 p->ps->lastf = f; 1094 1095 /* 1096 * If we're still at the top of the page, let the font-setting 1097 * be delayed until we actually have stuff to print. 1098 */ 1099 1100 if (PS_NEWPAGE & p->ps->flags) 1101 return; 1102 1103 if (TERMTYPE_PS == p->type) 1104 ps_printf(p, "/%s %zu selectfont\n", 1105 fonts[(int)f].name, 1106 p->ps->scale); 1107 else 1108 ps_printf(p, "/F%d %zu Tf\n", 1109 (int)f, 1110 p->ps->scale); 1111 } 1112 1113 1114 /* ARGSUSED */ 1115 static size_t 1116 ps_width(const struct termp *p, int c) 1117 { 1118 1119 if (c <= 32 || c - 32 >= MAXCHAR) 1120 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx); 1121 1122 c -= 32; 1123 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1124 } 1125 1126 1127 static double 1128 ps_hspan(const struct termp *p, const struct roffsu *su) 1129 { 1130 double r; 1131 1132 /* 1133 * All of these measurements are derived by converting from the 1134 * native measurement to AFM units. 1135 */ 1136 1137 switch (su->unit) { 1138 case (SCALE_CM): 1139 r = PNT2AFM(p, su->scale * 28.34); 1140 break; 1141 case (SCALE_IN): 1142 r = PNT2AFM(p, su->scale * 72); 1143 break; 1144 case (SCALE_PC): 1145 r = PNT2AFM(p, su->scale * 12); 1146 break; 1147 case (SCALE_PT): 1148 r = PNT2AFM(p, su->scale * 100); 1149 break; 1150 case (SCALE_EM): 1151 r = su->scale * 1152 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1153 break; 1154 case (SCALE_MM): 1155 r = PNT2AFM(p, su->scale * 2.834); 1156 break; 1157 case (SCALE_EN): 1158 r = su->scale * 1159 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1160 break; 1161 case (SCALE_VS): 1162 r = su->scale * p->ps->lineheight; 1163 break; 1164 default: 1165 r = su->scale; 1166 break; 1167 } 1168 1169 return(r); 1170 } 1171 1172 static void 1173 ps_growbuf(struct termp *p, size_t sz) 1174 { 1175 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1176 return; 1177 1178 if (sz < PS_BUFSLOP) 1179 sz = PS_BUFSLOP; 1180 1181 p->ps->psmargsz += sz; 1182 1183 p->ps->psmarg = mandoc_realloc 1184 (p->ps->psmarg, p->ps->psmargsz); 1185 } 1186 1187