1 /* $Vendor-Id: term_ps.c,v 1.48 2011/03/17 08:49:34 kristaps Exp $ */ 2 /* 3 * Copyright (c) 2010 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 /* Convert PostScript point "x" to an AFM unit. */ 38 #define PNT2AFM(p, x) /* LINTED */ \ 39 (size_t)((double)(x) * (1000.0 / (double)(p)->engine.ps.scale)) 40 41 /* Convert an AFM unit "x" to a PostScript points */ 42 #define AFM2PNT(p, x) /* LINTED */ \ 43 ((double)(x) / (1000.0 / (double)(p)->engine.ps.scale)) 44 45 struct glyph { 46 unsigned short wx; /* WX in AFM */ 47 }; 48 49 struct font { 50 const char *name; /* FontName in AFM */ 51 #define MAXCHAR 95 /* total characters we can handle */ 52 struct glyph gly[MAXCHAR]; /* glyph metrics */ 53 }; 54 55 /* 56 * We define, for the time being, three fonts: bold, oblique/italic, and 57 * normal (roman). The following table hard-codes the font metrics for 58 * ASCII, i.e., 32--127. 59 */ 60 61 static const struct font fonts[TERMFONT__MAX] = { 62 { "Times-Roman", { 63 { 250 }, 64 { 333 }, 65 { 408 }, 66 { 500 }, 67 { 500 }, 68 { 833 }, 69 { 778 }, 70 { 333 }, 71 { 333 }, 72 { 333 }, 73 { 500 }, 74 { 564 }, 75 { 250 }, 76 { 333 }, 77 { 250 }, 78 { 278 }, 79 { 500 }, 80 { 500 }, 81 { 500 }, 82 { 500 }, 83 { 500 }, 84 { 500 }, 85 { 500 }, 86 { 500 }, 87 { 500 }, 88 { 500 }, 89 { 278 }, 90 { 278 }, 91 { 564 }, 92 { 564 }, 93 { 564 }, 94 { 444 }, 95 { 921 }, 96 { 722 }, 97 { 667 }, 98 { 667 }, 99 { 722 }, 100 { 611 }, 101 { 556 }, 102 { 722 }, 103 { 722 }, 104 { 333 }, 105 { 389 }, 106 { 722 }, 107 { 611 }, 108 { 889 }, 109 { 722 }, 110 { 722 }, 111 { 556 }, 112 { 722 }, 113 { 667 }, 114 { 556 }, 115 { 611 }, 116 { 722 }, 117 { 722 }, 118 { 944 }, 119 { 722 }, 120 { 722 }, 121 { 611 }, 122 { 333 }, 123 { 278 }, 124 { 333 }, 125 { 469 }, 126 { 500 }, 127 { 333 }, 128 { 444 }, 129 { 500 }, 130 { 444 }, 131 { 500}, 132 { 444}, 133 { 333}, 134 { 500}, 135 { 500}, 136 { 278}, 137 { 278}, 138 { 500}, 139 { 278}, 140 { 778}, 141 { 500}, 142 { 500}, 143 { 500}, 144 { 500}, 145 { 333}, 146 { 389}, 147 { 278}, 148 { 500}, 149 { 500}, 150 { 722}, 151 { 500}, 152 { 500}, 153 { 444}, 154 { 480}, 155 { 200}, 156 { 480}, 157 { 541}, 158 } }, 159 { "Times-Bold", { 160 { 250 }, 161 { 333 }, 162 { 555 }, 163 { 500 }, 164 { 500 }, 165 { 1000 }, 166 { 833 }, 167 { 333 }, 168 { 333 }, 169 { 333 }, 170 { 500 }, 171 { 570 }, 172 { 250 }, 173 { 333 }, 174 { 250 }, 175 { 278 }, 176 { 500 }, 177 { 500 }, 178 { 500 }, 179 { 500 }, 180 { 500 }, 181 { 500 }, 182 { 500 }, 183 { 500 }, 184 { 500 }, 185 { 500 }, 186 { 333 }, 187 { 333 }, 188 { 570 }, 189 { 570 }, 190 { 570 }, 191 { 500 }, 192 { 930 }, 193 { 722 }, 194 { 667 }, 195 { 722 }, 196 { 722 }, 197 { 667 }, 198 { 611 }, 199 { 778 }, 200 { 778 }, 201 { 389 }, 202 { 500 }, 203 { 778 }, 204 { 667 }, 205 { 944 }, 206 { 722 }, 207 { 778 }, 208 { 611 }, 209 { 778 }, 210 { 722 }, 211 { 556 }, 212 { 667 }, 213 { 722 }, 214 { 722 }, 215 { 1000 }, 216 { 722 }, 217 { 722 }, 218 { 667 }, 219 { 333 }, 220 { 278 }, 221 { 333 }, 222 { 581 }, 223 { 500 }, 224 { 333 }, 225 { 500 }, 226 { 556 }, 227 { 444 }, 228 { 556 }, 229 { 444 }, 230 { 333 }, 231 { 500 }, 232 { 556 }, 233 { 278 }, 234 { 333 }, 235 { 556 }, 236 { 278 }, 237 { 833 }, 238 { 556 }, 239 { 500 }, 240 { 556 }, 241 { 556 }, 242 { 444 }, 243 { 389 }, 244 { 333 }, 245 { 556 }, 246 { 500 }, 247 { 722 }, 248 { 500 }, 249 { 500 }, 250 { 444 }, 251 { 394 }, 252 { 220 }, 253 { 394 }, 254 { 520 }, 255 } }, 256 { "Times-Italic", { 257 { 250 }, 258 { 333 }, 259 { 420 }, 260 { 500 }, 261 { 500 }, 262 { 833 }, 263 { 778 }, 264 { 333 }, 265 { 333 }, 266 { 333 }, 267 { 500 }, 268 { 675 }, 269 { 250 }, 270 { 333 }, 271 { 250 }, 272 { 278 }, 273 { 500 }, 274 { 500 }, 275 { 500 }, 276 { 500 }, 277 { 500 }, 278 { 500 }, 279 { 500 }, 280 { 500 }, 281 { 500 }, 282 { 500 }, 283 { 333 }, 284 { 333 }, 285 { 675 }, 286 { 675 }, 287 { 675 }, 288 { 500 }, 289 { 920 }, 290 { 611 }, 291 { 611 }, 292 { 667 }, 293 { 722 }, 294 { 611 }, 295 { 611 }, 296 { 722 }, 297 { 722 }, 298 { 333 }, 299 { 444 }, 300 { 667 }, 301 { 556 }, 302 { 833 }, 303 { 667 }, 304 { 722 }, 305 { 611 }, 306 { 722 }, 307 { 611 }, 308 { 500 }, 309 { 556 }, 310 { 722 }, 311 { 611 }, 312 { 833 }, 313 { 611 }, 314 { 556 }, 315 { 556 }, 316 { 389 }, 317 { 278 }, 318 { 389 }, 319 { 422 }, 320 { 500 }, 321 { 333 }, 322 { 500 }, 323 { 500 }, 324 { 444 }, 325 { 500 }, 326 { 444 }, 327 { 278 }, 328 { 500 }, 329 { 500 }, 330 { 278 }, 331 { 278 }, 332 { 444 }, 333 { 278 }, 334 { 722 }, 335 { 500 }, 336 { 500 }, 337 { 500 }, 338 { 500 }, 339 { 389 }, 340 { 389 }, 341 { 278 }, 342 { 500 }, 343 { 444 }, 344 { 667 }, 345 { 444 }, 346 { 444 }, 347 { 389 }, 348 { 400 }, 349 { 275 }, 350 { 400 }, 351 { 541 }, 352 } }, 353 }; 354 355 /* These work the buffer used by the header and footer. */ 356 #define PS_BUFSLOP 128 357 358 static void 359 ps_growbuf(struct termp *p, size_t sz) 360 { 361 if (p->engine.ps.psmargcur + sz <= p->engine.ps.psmargsz) 362 return; 363 364 if (sz < PS_BUFSLOP) 365 sz = PS_BUFSLOP; 366 367 p->engine.ps.psmargsz += sz; 368 369 p->engine.ps.psmarg = mandoc_realloc 370 (p->engine.ps.psmarg, 371 p->engine.ps.psmargsz); 372 } 373 374 static double ps_hspan(const struct termp *, 375 const struct roffsu *); 376 static size_t ps_width(const struct termp *, char); 377 static void ps_advance(struct termp *, size_t); 378 static void ps_begin(struct termp *); 379 static void ps_closepage(struct termp *); 380 static void ps_end(struct termp *); 381 static void ps_endline(struct termp *); 382 static void ps_fclose(struct termp *); 383 static void ps_letter(struct termp *, char); 384 static void ps_pclose(struct termp *); 385 static void ps_pletter(struct termp *, int); 386 static void ps_printf(struct termp *, const char *, ...); 387 static void ps_putchar(struct termp *, char); 388 static void ps_setfont(struct termp *, enum termfont); 389 static struct termp *pspdf_alloc(char *); 390 static void pdf_obj(struct termp *, size_t); 391 392 393 void * 394 pdf_alloc(char *outopts) 395 { 396 struct termp *p; 397 398 if (NULL != (p = pspdf_alloc(outopts))) 399 p->type = TERMTYPE_PDF; 400 401 return(p); 402 } 403 404 405 void * 406 ps_alloc(char *outopts) 407 { 408 struct termp *p; 409 410 if (NULL != (p = pspdf_alloc(outopts))) 411 p->type = TERMTYPE_PS; 412 413 return(p); 414 } 415 416 417 static struct termp * 418 pspdf_alloc(char *outopts) 419 { 420 struct termp *p; 421 size_t pagex, pagey, marginx, marginy, lineheight; 422 const char *toks[2]; 423 const char *pp; 424 char *v; 425 426 p = term_alloc(TERMENC_ASCII); 427 428 p->advance = ps_advance; 429 p->begin = ps_begin; 430 p->end = ps_end; 431 p->endline = ps_endline; 432 p->hspan = ps_hspan; 433 p->letter = ps_letter; 434 p->width = ps_width; 435 436 toks[0] = "paper"; 437 toks[1] = NULL; 438 439 pp = NULL; 440 441 while (outopts && *outopts) 442 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 443 case (0): 444 pp = v; 445 break; 446 default: 447 break; 448 } 449 450 /* Default to US letter (millimetres). */ 451 452 pagex = 216; 453 pagey = 279; 454 455 /* 456 * The ISO-269 paper sizes can be calculated automatically, but 457 * it would require bringing in -lm for pow() and I'd rather not 458 * do that. So just do it the easy way for now. Since this 459 * only happens once, I'm not terribly concerned. 460 */ 461 462 if (pp && strcasecmp(pp, "letter")) { 463 if (0 == strcasecmp(pp, "a3")) { 464 pagex = 297; 465 pagey = 420; 466 } else if (0 == strcasecmp(pp, "a4")) { 467 pagex = 210; 468 pagey = 297; 469 } else if (0 == strcasecmp(pp, "a5")) { 470 pagex = 148; 471 pagey = 210; 472 } else if (0 == strcasecmp(pp, "legal")) { 473 pagex = 216; 474 pagey = 356; 475 } else if (2 != sscanf(pp, "%zux%zu", &pagex, &pagey)) 476 fprintf(stderr, "%s: Unknown paper\n", pp); 477 } else if (NULL == pp) 478 pp = "letter"; 479 480 /* 481 * This MUST be defined before any PNT2AFM or AFM2PNT 482 * calculations occur. 483 */ 484 485 p->engine.ps.scale = 11; 486 487 /* Remember millimetres -> AFM units. */ 488 489 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 490 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 491 492 /* Margins are 1/9 the page x and y. */ 493 494 marginx = /* LINTED */ 495 (size_t)((double)pagex / 9.0); 496 marginy = /* LINTED */ 497 (size_t)((double)pagey / 9.0); 498 499 /* Line-height is 1.4em. */ 500 501 lineheight = PNT2AFM(p, ((double)p->engine.ps.scale * 1.4)); 502 503 p->engine.ps.width = pagex; 504 p->engine.ps.height = pagey; 505 p->engine.ps.header = pagey - (marginy / 2) - (lineheight / 2); 506 p->engine.ps.top = pagey - marginy; 507 p->engine.ps.footer = (marginy / 2) - (lineheight / 2); 508 p->engine.ps.bottom = marginy; 509 p->engine.ps.left = marginx; 510 p->engine.ps.lineheight = lineheight; 511 512 p->defrmargin = pagex - (marginx * 2); 513 return(p); 514 } 515 516 517 void 518 pspdf_free(void *arg) 519 { 520 struct termp *p; 521 522 p = (struct termp *)arg; 523 524 if (p->engine.ps.psmarg) 525 free(p->engine.ps.psmarg); 526 if (p->engine.ps.pdfobjs) 527 free(p->engine.ps.pdfobjs); 528 529 term_free(p); 530 } 531 532 533 static void 534 ps_printf(struct termp *p, const char *fmt, ...) 535 { 536 va_list ap; 537 int pos, len; 538 539 va_start(ap, fmt); 540 541 /* 542 * If we're running in regular mode, then pipe directly into 543 * vprintf(). If we're processing margins, then push the data 544 * into our growable margin buffer. 545 */ 546 547 if ( ! (PS_MARGINS & p->engine.ps.flags)) { 548 len = vprintf(fmt, ap); 549 va_end(ap); 550 p->engine.ps.pdfbytes += /* LINTED */ 551 len < 0 ? 0 : (size_t)len; 552 return; 553 } 554 555 /* 556 * XXX: I assume that the in-margin print won't exceed 557 * PS_BUFSLOP (128 bytes), which is reasonable but still an 558 * assumption that will cause pukeage if it's not the case. 559 */ 560 561 ps_growbuf(p, PS_BUFSLOP); 562 563 pos = (int)p->engine.ps.psmargcur; 564 len = vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap); 565 566 va_end(ap); 567 568 p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg); 569 } 570 571 572 static void 573 ps_putchar(struct termp *p, char c) 574 { 575 int pos; 576 577 /* See ps_printf(). */ 578 579 if ( ! (PS_MARGINS & p->engine.ps.flags)) { 580 /* LINTED */ 581 putchar(c); 582 p->engine.ps.pdfbytes++; 583 return; 584 } 585 586 ps_growbuf(p, 2); 587 588 pos = (int)p->engine.ps.psmargcur++; 589 p->engine.ps.psmarg[pos++] = c; 590 p->engine.ps.psmarg[pos] = '\0'; 591 } 592 593 594 static void 595 pdf_obj(struct termp *p, size_t obj) 596 { 597 598 assert(obj > 0); 599 600 if ((obj - 1) >= p->engine.ps.pdfobjsz) { 601 p->engine.ps.pdfobjsz = obj + 128; 602 p->engine.ps.pdfobjs = realloc 603 (p->engine.ps.pdfobjs, 604 p->engine.ps.pdfobjsz * sizeof(size_t)); 605 if (NULL == p->engine.ps.pdfobjs) { 606 perror(NULL); 607 exit((int)MANDOCLEVEL_SYSERR); 608 } 609 } 610 611 p->engine.ps.pdfobjs[(int)obj - 1] = p->engine.ps.pdfbytes; 612 ps_printf(p, "%zu 0 obj\n", obj); 613 } 614 615 616 static void 617 ps_closepage(struct termp *p) 618 { 619 int i; 620 size_t len, base; 621 622 /* 623 * Close out a page that we've already flushed to output. In 624 * PostScript, we simply note that the page must be showed. In 625 * PDF, we must now create the Length, Resource, and Page node 626 * for the page contents. 627 */ 628 629 assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]); 630 ps_printf(p, "%s", p->engine.ps.psmarg); 631 632 if (TERMTYPE_PS != p->type) { 633 ps_printf(p, "ET\n"); 634 635 len = p->engine.ps.pdfbytes - p->engine.ps.pdflastpg; 636 base = p->engine.ps.pages * 4 + p->engine.ps.pdfbody; 637 638 ps_printf(p, "endstream\nendobj\n"); 639 640 /* Length of content. */ 641 pdf_obj(p, base + 1); 642 ps_printf(p, "%zu\nendobj\n", len); 643 644 /* Resource for content. */ 645 pdf_obj(p, base + 2); 646 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 647 ps_printf(p, "/Font <<\n"); 648 for (i = 0; i < (int)TERMFONT__MAX; i++) 649 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 650 ps_printf(p, ">>\n>>\n"); 651 652 /* Page node. */ 653 pdf_obj(p, base + 3); 654 ps_printf(p, "<<\n"); 655 ps_printf(p, "/Type /Page\n"); 656 ps_printf(p, "/Parent 2 0 R\n"); 657 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 658 ps_printf(p, "/Contents %zu 0 R\n", base); 659 ps_printf(p, ">>\nendobj\n"); 660 } else 661 ps_printf(p, "showpage\n"); 662 663 p->engine.ps.pages++; 664 p->engine.ps.psrow = p->engine.ps.top; 665 assert( ! (PS_NEWPAGE & p->engine.ps.flags)); 666 p->engine.ps.flags |= PS_NEWPAGE; 667 } 668 669 670 /* ARGSUSED */ 671 static void 672 ps_end(struct termp *p) 673 { 674 size_t i, xref, base; 675 676 /* 677 * At the end of the file, do one last showpage. This is the 678 * same behaviour as groff(1) and works for multiple pages as 679 * well as just one. 680 */ 681 682 if ( ! (PS_NEWPAGE & p->engine.ps.flags)) { 683 assert(0 == p->engine.ps.flags); 684 assert('\0' == p->engine.ps.last); 685 ps_closepage(p); 686 } 687 688 if (TERMTYPE_PS == p->type) { 689 ps_printf(p, "%%%%Trailer\n"); 690 ps_printf(p, "%%%%Pages: %zu\n", p->engine.ps.pages); 691 ps_printf(p, "%%%%EOF\n"); 692 return; 693 } 694 695 pdf_obj(p, 2); 696 ps_printf(p, "<<\n/Type /Pages\n"); 697 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 698 (size_t)AFM2PNT(p, p->engine.ps.width), 699 (size_t)AFM2PNT(p, p->engine.ps.height)); 700 701 ps_printf(p, "/Count %zu\n", p->engine.ps.pages); 702 ps_printf(p, "/Kids ["); 703 704 for (i = 0; i < p->engine.ps.pages; i++) 705 ps_printf(p, " %zu 0 R", i * 4 + 706 p->engine.ps.pdfbody + 3); 707 708 base = (p->engine.ps.pages - 1) * 4 + 709 p->engine.ps.pdfbody + 4; 710 711 ps_printf(p, "]\n>>\nendobj\n"); 712 pdf_obj(p, base); 713 ps_printf(p, "<<\n"); 714 ps_printf(p, "/Type /Catalog\n"); 715 ps_printf(p, "/Pages 2 0 R\n"); 716 ps_printf(p, ">>\n"); 717 xref = p->engine.ps.pdfbytes; 718 ps_printf(p, "xref\n"); 719 ps_printf(p, "0 %zu\n", base + 1); 720 ps_printf(p, "0000000000 65535 f \n"); 721 722 for (i = 0; i < base; i++) 723 ps_printf(p, "%.10zu 00000 n \n", 724 p->engine.ps.pdfobjs[(int)i]); 725 726 ps_printf(p, "trailer\n"); 727 ps_printf(p, "<<\n"); 728 ps_printf(p, "/Size %zu\n", base + 1); 729 ps_printf(p, "/Root %zu 0 R\n", base); 730 ps_printf(p, "/Info 1 0 R\n"); 731 ps_printf(p, ">>\n"); 732 ps_printf(p, "startxref\n"); 733 ps_printf(p, "%zu\n", xref); 734 ps_printf(p, "%%%%EOF\n"); 735 } 736 737 738 static void 739 ps_begin(struct termp *p) 740 { 741 time_t t; 742 int i; 743 744 /* 745 * Print margins into margin buffer. Nothing gets output to the 746 * screen yet, so we don't need to initialise the primary state. 747 */ 748 749 if (p->engine.ps.psmarg) { 750 assert(p->engine.ps.psmargsz); 751 p->engine.ps.psmarg[0] = '\0'; 752 } 753 754 /*p->engine.ps.pdfbytes = 0;*/ 755 p->engine.ps.psmargcur = 0; 756 p->engine.ps.flags = PS_MARGINS; 757 p->engine.ps.pscol = p->engine.ps.left; 758 p->engine.ps.psrow = p->engine.ps.header; 759 760 ps_setfont(p, TERMFONT_NONE); 761 762 (*p->headf)(p, p->argf); 763 (*p->endline)(p); 764 765 p->engine.ps.pscol = p->engine.ps.left; 766 p->engine.ps.psrow = p->engine.ps.footer; 767 768 (*p->footf)(p, p->argf); 769 (*p->endline)(p); 770 771 p->engine.ps.flags &= ~PS_MARGINS; 772 773 assert(0 == p->engine.ps.flags); 774 assert(p->engine.ps.psmarg); 775 assert('\0' != p->engine.ps.psmarg[0]); 776 777 /* 778 * Print header and initialise page state. Following this, 779 * stuff gets printed to the screen, so make sure we're sane. 780 */ 781 782 t = time(NULL); 783 784 if (TERMTYPE_PS == p->type) { 785 ps_printf(p, "%%!PS-Adobe-3.0\n"); 786 ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); 787 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 788 ps_printf(p, "%%%%Orientation: Portrait\n"); 789 ps_printf(p, "%%%%Pages: (atend)\n"); 790 ps_printf(p, "%%%%PageOrder: Ascend\n"); 791 ps_printf(p, "%%%%DocumentMedia: " 792 "Default %zu %zu 0 () ()\n", 793 (size_t)AFM2PNT(p, p->engine.ps.width), 794 (size_t)AFM2PNT(p, p->engine.ps.height)); 795 ps_printf(p, "%%%%DocumentNeededResources: font"); 796 797 for (i = 0; i < (int)TERMFONT__MAX; i++) 798 ps_printf(p, " %s", fonts[i].name); 799 800 ps_printf(p, "\n%%%%EndComments\n"); 801 } else { 802 ps_printf(p, "%%PDF-1.1\n"); 803 pdf_obj(p, 1); 804 ps_printf(p, "<<\n"); 805 ps_printf(p, ">>\n"); 806 ps_printf(p, "endobj\n"); 807 808 for (i = 0; i < (int)TERMFONT__MAX; i++) { 809 pdf_obj(p, (size_t)i + 3); 810 ps_printf(p, "<<\n"); 811 ps_printf(p, "/Type /Font\n"); 812 ps_printf(p, "/Subtype /Type1\n"); 813 ps_printf(p, "/Name /F%zu\n", i); 814 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 815 ps_printf(p, ">>\n"); 816 } 817 } 818 819 p->engine.ps.pdfbody = (size_t)TERMFONT__MAX + 3; 820 p->engine.ps.pscol = p->engine.ps.left; 821 p->engine.ps.psrow = p->engine.ps.top; 822 p->engine.ps.flags |= PS_NEWPAGE; 823 ps_setfont(p, TERMFONT_NONE); 824 } 825 826 827 static void 828 ps_pletter(struct termp *p, int c) 829 { 830 int f; 831 832 /* 833 * If we haven't opened a page context, then output that we're 834 * in a new page and make sure the font is correctly set. 835 */ 836 837 if (PS_NEWPAGE & p->engine.ps.flags) { 838 if (TERMTYPE_PS == p->type) { 839 ps_printf(p, "%%%%Page: %zu %zu\n", 840 p->engine.ps.pages + 1, 841 p->engine.ps.pages + 1); 842 ps_printf(p, "/%s %zu selectfont\n", 843 fonts[(int)p->engine.ps.lastf].name, 844 p->engine.ps.scale); 845 } else { 846 pdf_obj(p, p->engine.ps.pdfbody + 847 p->engine.ps.pages * 4); 848 ps_printf(p, "<<\n"); 849 ps_printf(p, "/Length %zu 0 R\n", 850 p->engine.ps.pdfbody + 1 + 851 p->engine.ps.pages * 4); 852 ps_printf(p, ">>\nstream\n"); 853 } 854 p->engine.ps.pdflastpg = p->engine.ps.pdfbytes; 855 p->engine.ps.flags &= ~PS_NEWPAGE; 856 } 857 858 /* 859 * If we're not in a PostScript "word" context, then open one 860 * now at the current cursor. 861 */ 862 863 if ( ! (PS_INLINE & p->engine.ps.flags)) { 864 if (TERMTYPE_PS != p->type) { 865 ps_printf(p, "BT\n/F%d %zu Tf\n", 866 (int)p->engine.ps.lastf, 867 p->engine.ps.scale); 868 ps_printf(p, "%.3f %.3f Td\n(", 869 AFM2PNT(p, p->engine.ps.pscol), 870 AFM2PNT(p, p->engine.ps.psrow)); 871 } else 872 ps_printf(p, "%.3f %.3f moveto\n(", 873 AFM2PNT(p, p->engine.ps.pscol), 874 AFM2PNT(p, p->engine.ps.psrow)); 875 p->engine.ps.flags |= PS_INLINE; 876 } 877 878 assert( ! (PS_NEWPAGE & p->engine.ps.flags)); 879 880 /* 881 * We need to escape these characters as per the PostScript 882 * specification. We would also escape non-graphable characters 883 * (like tabs), but none of them would get to this point and 884 * it's superfluous to abort() on them. 885 */ 886 887 switch (c) { 888 case ('('): 889 /* FALLTHROUGH */ 890 case (')'): 891 /* FALLTHROUGH */ 892 case ('\\'): 893 ps_putchar(p, '\\'); 894 break; 895 default: 896 break; 897 } 898 899 /* Write the character and adjust where we are on the page. */ 900 901 f = (int)p->engine.ps.lastf; 902 903 if (c <= 32 || (c - 32 >= MAXCHAR)) { 904 ps_putchar(p, ' '); 905 p->engine.ps.pscol += (size_t)fonts[f].gly[0].wx; 906 return; 907 } 908 909 ps_putchar(p, (char)c); 910 c -= 32; 911 p->engine.ps.pscol += (size_t)fonts[f].gly[c].wx; 912 } 913 914 915 static void 916 ps_pclose(struct termp *p) 917 { 918 919 /* 920 * Spit out that we're exiting a word context (this is a 921 * "partial close" because we don't check the last-char buffer 922 * or anything). 923 */ 924 925 if ( ! (PS_INLINE & p->engine.ps.flags)) 926 return; 927 928 if (TERMTYPE_PS != p->type) { 929 ps_printf(p, ") Tj\nET\n"); 930 } else 931 ps_printf(p, ") show\n"); 932 933 p->engine.ps.flags &= ~PS_INLINE; 934 } 935 936 937 static void 938 ps_fclose(struct termp *p) 939 { 940 941 /* 942 * Strong closure: if we have a last-char, spit it out after 943 * checking that we're in the right font mode. This will of 944 * course open a new scope, if applicable. 945 * 946 * Following this, close out any scope that's open. 947 */ 948 949 if ('\0' != p->engine.ps.last) { 950 if (p->engine.ps.lastf != TERMFONT_NONE) { 951 ps_pclose(p); 952 ps_setfont(p, TERMFONT_NONE); 953 } 954 ps_pletter(p, p->engine.ps.last); 955 p->engine.ps.last = '\0'; 956 } 957 958 if ( ! (PS_INLINE & p->engine.ps.flags)) 959 return; 960 961 ps_pclose(p); 962 } 963 964 965 static void 966 ps_letter(struct termp *p, char c) 967 { 968 char cc; 969 970 /* 971 * State machine dictates whether to buffer the last character 972 * or not. Basically, encoded words are detected by checking if 973 * we're an "8" and switching on the buffer. Then we put "8" in 974 * our buffer, and on the next charater, flush both character 975 * and buffer. Thus, "regular" words are detected by having a 976 * regular character and a regular buffer character. 977 */ 978 979 if ('\0' == p->engine.ps.last) { 980 assert(8 != c); 981 p->engine.ps.last = c; 982 return; 983 } else if (8 == p->engine.ps.last) { 984 assert(8 != c); 985 p->engine.ps.last = '\0'; 986 } else if (8 == c) { 987 assert(8 != p->engine.ps.last); 988 if ('_' == p->engine.ps.last) { 989 if (p->engine.ps.lastf != TERMFONT_UNDER) { 990 ps_pclose(p); 991 ps_setfont(p, TERMFONT_UNDER); 992 } 993 } else if (p->engine.ps.lastf != TERMFONT_BOLD) { 994 ps_pclose(p); 995 ps_setfont(p, TERMFONT_BOLD); 996 } 997 p->engine.ps.last = c; 998 return; 999 } else { 1000 if (p->engine.ps.lastf != TERMFONT_NONE) { 1001 ps_pclose(p); 1002 ps_setfont(p, TERMFONT_NONE); 1003 } 1004 cc = p->engine.ps.last; 1005 p->engine.ps.last = c; 1006 c = cc; 1007 } 1008 1009 ps_pletter(p, c); 1010 } 1011 1012 1013 static void 1014 ps_advance(struct termp *p, size_t len) 1015 { 1016 1017 /* 1018 * Advance some spaces. This can probably be made smarter, 1019 * i.e., to have multiple space-separated words in the same 1020 * scope, but this is easier: just close out the current scope 1021 * and readjust our column settings. 1022 */ 1023 1024 ps_fclose(p); 1025 p->engine.ps.pscol += len; 1026 } 1027 1028 1029 static void 1030 ps_endline(struct termp *p) 1031 { 1032 1033 /* Close out any scopes we have open: we're at eoln. */ 1034 1035 ps_fclose(p); 1036 1037 /* 1038 * If we're in the margin, don't try to recalculate our current 1039 * row. XXX: if the column tries to be fancy with multiple 1040 * lines, we'll do nasty stuff. 1041 */ 1042 1043 if (PS_MARGINS & p->engine.ps.flags) 1044 return; 1045 1046 /* Left-justify. */ 1047 1048 p->engine.ps.pscol = p->engine.ps.left; 1049 1050 /* If we haven't printed anything, return. */ 1051 1052 if (PS_NEWPAGE & p->engine.ps.flags) 1053 return; 1054 1055 /* 1056 * Put us down a line. If we're at the page bottom, spit out a 1057 * showpage and restart our row. 1058 */ 1059 1060 if (p->engine.ps.psrow >= p->engine.ps.lineheight + 1061 p->engine.ps.bottom) { 1062 p->engine.ps.psrow -= p->engine.ps.lineheight; 1063 return; 1064 } 1065 1066 ps_closepage(p); 1067 } 1068 1069 1070 static void 1071 ps_setfont(struct termp *p, enum termfont f) 1072 { 1073 1074 assert(f < TERMFONT__MAX); 1075 p->engine.ps.lastf = f; 1076 1077 /* 1078 * If we're still at the top of the page, let the font-setting 1079 * be delayed until we actually have stuff to print. 1080 */ 1081 1082 if (PS_NEWPAGE & p->engine.ps.flags) 1083 return; 1084 1085 if (TERMTYPE_PS == p->type) 1086 ps_printf(p, "/%s %zu selectfont\n", 1087 fonts[(int)f].name, 1088 p->engine.ps.scale); 1089 else 1090 ps_printf(p, "/F%d %zu Tf\n", 1091 (int)f, 1092 p->engine.ps.scale); 1093 } 1094 1095 1096 /* ARGSUSED */ 1097 static size_t 1098 ps_width(const struct termp *p, char c) 1099 { 1100 1101 if (c <= 32 || c - 32 >= MAXCHAR) 1102 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx); 1103 1104 c -= 32; 1105 return((size_t)fonts[(int)TERMFONT_NONE].gly[(int)c].wx); 1106 } 1107 1108 1109 static double 1110 ps_hspan(const struct termp *p, const struct roffsu *su) 1111 { 1112 double r; 1113 1114 /* 1115 * All of these measurements are derived by converting from the 1116 * native measurement to AFM units. 1117 */ 1118 1119 switch (su->unit) { 1120 case (SCALE_CM): 1121 r = PNT2AFM(p, su->scale * 28.34); 1122 break; 1123 case (SCALE_IN): 1124 r = PNT2AFM(p, su->scale * 72); 1125 break; 1126 case (SCALE_PC): 1127 r = PNT2AFM(p, su->scale * 12); 1128 break; 1129 case (SCALE_PT): 1130 r = PNT2AFM(p, su->scale * 100); 1131 break; 1132 case (SCALE_EM): 1133 r = su->scale * 1134 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1135 break; 1136 case (SCALE_MM): 1137 r = PNT2AFM(p, su->scale * 2.834); 1138 break; 1139 case (SCALE_EN): 1140 r = su->scale * 1141 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1142 break; 1143 case (SCALE_VS): 1144 r = su->scale * p->engine.ps.lineheight; 1145 break; 1146 default: 1147 r = su->scale; 1148 break; 1149 } 1150 1151 return(r); 1152 } 1153 1154