1 /* $Id: term_ps.c,v 1.25 2014/04/23 21:06:33 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2014 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 AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 #include <sys/types.h> 19 20 #include <assert.h> 21 #include <stdarg.h> 22 #include <stdint.h> 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <time.h> 27 #include <unistd.h> 28 29 #include "mandoc.h" 30 #include "mandoc_aux.h" 31 #include "out.h" 32 #include "main.h" 33 #include "term.h" 34 35 /* These work the buffer used by the header and footer. */ 36 #define PS_BUFSLOP 128 37 38 /* Convert PostScript point "x" to an AFM unit. */ 39 #define PNT2AFM(p, x) \ 40 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 41 42 /* Convert an AFM unit "x" to a PostScript points */ 43 #define AFM2PNT(p, x) \ 44 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 45 46 struct glyph { 47 unsigned short wx; /* WX in AFM */ 48 }; 49 50 struct font { 51 const char *name; /* FontName in AFM */ 52 #define MAXCHAR 95 /* total characters we can handle */ 53 struct glyph gly[MAXCHAR]; /* glyph metrics */ 54 }; 55 56 struct termp_ps { 57 int flags; 58 #define PS_INLINE (1 << 0) /* we're in a word */ 59 #define PS_MARGINS (1 << 1) /* we're in the margins */ 60 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 61 size_t pscol; /* visible column (AFM units) */ 62 size_t psrow; /* visible row (AFM units) */ 63 char *psmarg; /* margin buf */ 64 size_t psmargsz; /* margin buf size */ 65 size_t psmargcur; /* cur index in margin buf */ 66 char last; /* character buffer */ 67 enum termfont lastf; /* last set font */ 68 size_t scale; /* font scaling factor */ 69 size_t pages; /* number of pages shown */ 70 size_t lineheight; /* line height (AFM units) */ 71 size_t top; /* body top (AFM units) */ 72 size_t bottom; /* body bottom (AFM units) */ 73 size_t height; /* page height (AFM units */ 74 size_t width; /* page width (AFM units) */ 75 size_t lastwidth; /* page width before last ll */ 76 size_t left; /* body left (AFM units) */ 77 size_t header; /* header pos (AFM units) */ 78 size_t footer; /* footer pos (AFM units) */ 79 size_t pdfbytes; /* current output byte */ 80 size_t pdflastpg; /* byte of last page mark */ 81 size_t pdfbody; /* start of body object */ 82 size_t *pdfobjs; /* table of object offsets */ 83 size_t pdfobjsz; /* size of pdfobjs */ 84 }; 85 86 static double ps_hspan(const struct termp *, 87 const struct roffsu *); 88 static size_t ps_width(const struct termp *, int); 89 static void ps_advance(struct termp *, size_t); 90 static void ps_begin(struct termp *); 91 static void ps_closepage(struct termp *); 92 static void ps_end(struct termp *); 93 static void ps_endline(struct termp *); 94 static void ps_fclose(struct termp *); 95 static void ps_growbuf(struct termp *, size_t); 96 static void ps_letter(struct termp *, int); 97 static void ps_pclose(struct termp *); 98 static void ps_pletter(struct termp *, int); 99 static void ps_printf(struct termp *, const char *, ...); 100 static void ps_putchar(struct termp *, char); 101 static void ps_setfont(struct termp *, enum termfont); 102 static void ps_setwidth(struct termp *, int, size_t); 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->setwidth = ps_setwidth; 449 p->width = ps_width; 450 451 toks[0] = "paper"; 452 toks[1] = NULL; 453 454 pp = NULL; 455 456 while (outopts && *outopts) 457 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 458 case 0: 459 pp = v; 460 break; 461 default: 462 break; 463 } 464 465 /* Default to US letter (millimetres). */ 466 467 pagex = 216; 468 pagey = 279; 469 470 /* 471 * The ISO-269 paper sizes can be calculated automatically, but 472 * it would require bringing in -lm for pow() and I'd rather not 473 * do that. So just do it the easy way for now. Since this 474 * only happens once, I'm not terribly concerned. 475 */ 476 477 if (pp && strcasecmp(pp, "letter")) { 478 if (0 == strcasecmp(pp, "a3")) { 479 pagex = 297; 480 pagey = 420; 481 } else if (0 == strcasecmp(pp, "a4")) { 482 pagex = 210; 483 pagey = 297; 484 } else if (0 == strcasecmp(pp, "a5")) { 485 pagex = 148; 486 pagey = 210; 487 } else if (0 == strcasecmp(pp, "legal")) { 488 pagex = 216; 489 pagey = 356; 490 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 491 fprintf(stderr, "%s: Unknown paper\n", pp); 492 } 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 = (size_t)((double)pagex / 9.0); 509 marginy = (size_t)((double)pagey / 9.0); 510 511 /* Line-height is 1.4em. */ 512 513 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 514 515 p->ps->width = p->ps->lastwidth = (size_t)pagex; 516 p->ps->height = (size_t)pagey; 517 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 518 p->ps->top = pagey - marginy; 519 p->ps->footer = (marginy / 2) - (lineheight / 2); 520 p->ps->bottom = marginy; 521 p->ps->left = marginx; 522 p->ps->lineheight = lineheight; 523 524 p->defrmargin = pagex - (marginx * 2); 525 return(p); 526 } 527 528 static void 529 ps_setwidth(struct termp *p, int iop, size_t width) 530 { 531 size_t lastwidth; 532 533 lastwidth = p->ps->width; 534 if (0 < iop) 535 p->ps->width += width; 536 else if (0 > iop) 537 p->ps->width -= width; 538 else 539 p->ps->width = width ? width : p->ps->lastwidth; 540 p->ps->lastwidth = lastwidth; 541 } 542 543 void 544 pspdf_free(void *arg) 545 { 546 struct termp *p; 547 548 p = (struct termp *)arg; 549 550 if (p->ps->psmarg) 551 free(p->ps->psmarg); 552 if (p->ps->pdfobjs) 553 free(p->ps->pdfobjs); 554 555 free(p->ps); 556 term_free(p); 557 } 558 559 static void 560 ps_printf(struct termp *p, const char *fmt, ...) 561 { 562 va_list ap; 563 int pos, len; 564 565 va_start(ap, fmt); 566 567 /* 568 * If we're running in regular mode, then pipe directly into 569 * vprintf(). If we're processing margins, then push the data 570 * into our growable margin buffer. 571 */ 572 573 if ( ! (PS_MARGINS & p->ps->flags)) { 574 len = vprintf(fmt, ap); 575 va_end(ap); 576 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 577 return; 578 } 579 580 /* 581 * XXX: I assume that the in-margin print won't exceed 582 * PS_BUFSLOP (128 bytes), which is reasonable but still an 583 * assumption that will cause pukeage if it's not the case. 584 */ 585 586 ps_growbuf(p, PS_BUFSLOP); 587 588 pos = (int)p->ps->psmargcur; 589 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 590 591 va_end(ap); 592 593 p->ps->psmargcur = strlen(p->ps->psmarg); 594 } 595 596 static void 597 ps_putchar(struct termp *p, char c) 598 { 599 int pos; 600 601 /* See ps_printf(). */ 602 603 if ( ! (PS_MARGINS & p->ps->flags)) { 604 putchar(c); 605 p->ps->pdfbytes++; 606 return; 607 } 608 609 ps_growbuf(p, 2); 610 611 pos = (int)p->ps->psmargcur++; 612 p->ps->psmarg[pos++] = c; 613 p->ps->psmarg[pos] = '\0'; 614 } 615 616 static void 617 pdf_obj(struct termp *p, size_t obj) 618 { 619 620 assert(obj > 0); 621 622 if ((obj - 1) >= p->ps->pdfobjsz) { 623 p->ps->pdfobjsz = obj + 128; 624 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 625 p->ps->pdfobjsz, sizeof(size_t)); 626 } 627 628 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 629 ps_printf(p, "%zu 0 obj\n", obj); 630 } 631 632 static void 633 ps_closepage(struct termp *p) 634 { 635 int i; 636 size_t len, base; 637 638 /* 639 * Close out a page that we've already flushed to output. In 640 * PostScript, we simply note that the page must be showed. In 641 * PDF, we must now create the Length, Resource, and Page node 642 * for the page contents. 643 */ 644 645 assert(p->ps->psmarg && p->ps->psmarg[0]); 646 ps_printf(p, "%s", p->ps->psmarg); 647 648 if (TERMTYPE_PS != p->type) { 649 ps_printf(p, "ET\n"); 650 651 len = p->ps->pdfbytes - p->ps->pdflastpg; 652 base = p->ps->pages * 4 + p->ps->pdfbody; 653 654 ps_printf(p, "endstream\nendobj\n"); 655 656 /* Length of content. */ 657 pdf_obj(p, base + 1); 658 ps_printf(p, "%zu\nendobj\n", len); 659 660 /* Resource for content. */ 661 pdf_obj(p, base + 2); 662 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 663 ps_printf(p, "/Font <<\n"); 664 for (i = 0; i < (int)TERMFONT__MAX; i++) 665 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 666 ps_printf(p, ">>\n>>\n"); 667 668 /* Page node. */ 669 pdf_obj(p, base + 3); 670 ps_printf(p, "<<\n"); 671 ps_printf(p, "/Type /Page\n"); 672 ps_printf(p, "/Parent 2 0 R\n"); 673 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 674 ps_printf(p, "/Contents %zu 0 R\n", base); 675 ps_printf(p, ">>\nendobj\n"); 676 } else 677 ps_printf(p, "showpage\n"); 678 679 p->ps->pages++; 680 p->ps->psrow = p->ps->top; 681 assert( ! (PS_NEWPAGE & p->ps->flags)); 682 p->ps->flags |= PS_NEWPAGE; 683 } 684 685 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 + p->ps->pdfbody + 3); 720 721 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 722 723 ps_printf(p, "]\n>>\nendobj\n"); 724 pdf_obj(p, base); 725 ps_printf(p, "<<\n"); 726 ps_printf(p, "/Type /Catalog\n"); 727 ps_printf(p, "/Pages 2 0 R\n"); 728 ps_printf(p, ">>\n"); 729 xref = p->ps->pdfbytes; 730 ps_printf(p, "xref\n"); 731 ps_printf(p, "0 %zu\n", base + 1); 732 ps_printf(p, "0000000000 65535 f \n"); 733 734 for (i = 0; i < base; i++) 735 ps_printf(p, "%.10zu 00000 n \n", 736 p->ps->pdfobjs[(int)i]); 737 738 ps_printf(p, "trailer\n"); 739 ps_printf(p, "<<\n"); 740 ps_printf(p, "/Size %zu\n", base + 1); 741 ps_printf(p, "/Root %zu 0 R\n", base); 742 ps_printf(p, "/Info 1 0 R\n"); 743 ps_printf(p, ">>\n"); 744 ps_printf(p, "startxref\n"); 745 ps_printf(p, "%zu\n", xref); 746 ps_printf(p, "%%%%EOF\n"); 747 } 748 749 static void 750 ps_begin(struct termp *p) 751 { 752 time_t t; 753 int i; 754 755 /* 756 * Print margins into margin buffer. Nothing gets output to the 757 * screen yet, so we don't need to initialise the primary state. 758 */ 759 760 if (p->ps->psmarg) { 761 assert(p->ps->psmargsz); 762 p->ps->psmarg[0] = '\0'; 763 } 764 765 /*p->ps->pdfbytes = 0;*/ 766 p->ps->psmargcur = 0; 767 p->ps->flags = PS_MARGINS; 768 p->ps->pscol = p->ps->left; 769 p->ps->psrow = p->ps->header; 770 771 ps_setfont(p, TERMFONT_NONE); 772 773 (*p->headf)(p, p->argf); 774 (*p->endline)(p); 775 776 p->ps->pscol = p->ps->left; 777 p->ps->psrow = p->ps->footer; 778 779 (*p->footf)(p, p->argf); 780 (*p->endline)(p); 781 782 p->ps->flags &= ~PS_MARGINS; 783 784 assert(0 == p->ps->flags); 785 assert(p->ps->psmarg); 786 assert('\0' != p->ps->psmarg[0]); 787 788 /* 789 * Print header and initialise page state. Following this, 790 * stuff gets printed to the screen, so make sure we're sane. 791 */ 792 793 t = time(NULL); 794 795 if (TERMTYPE_PS == p->type) { 796 ps_printf(p, "%%!PS-Adobe-3.0\n"); 797 ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); 798 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 799 ps_printf(p, "%%%%Orientation: Portrait\n"); 800 ps_printf(p, "%%%%Pages: (atend)\n"); 801 ps_printf(p, "%%%%PageOrder: Ascend\n"); 802 ps_printf(p, "%%%%DocumentMedia: " 803 "Default %zu %zu 0 () ()\n", 804 (size_t)AFM2PNT(p, p->ps->width), 805 (size_t)AFM2PNT(p, p->ps->height)); 806 ps_printf(p, "%%%%DocumentNeededResources: font"); 807 808 for (i = 0; i < (int)TERMFONT__MAX; i++) 809 ps_printf(p, " %s", fonts[i].name); 810 811 ps_printf(p, "\n%%%%EndComments\n"); 812 } else { 813 ps_printf(p, "%%PDF-1.1\n"); 814 pdf_obj(p, 1); 815 ps_printf(p, "<<\n"); 816 ps_printf(p, ">>\n"); 817 ps_printf(p, "endobj\n"); 818 819 for (i = 0; i < (int)TERMFONT__MAX; i++) { 820 pdf_obj(p, (size_t)i + 3); 821 ps_printf(p, "<<\n"); 822 ps_printf(p, "/Type /Font\n"); 823 ps_printf(p, "/Subtype /Type1\n"); 824 ps_printf(p, "/Name /F%d\n", i); 825 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 826 ps_printf(p, ">>\n"); 827 } 828 } 829 830 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 831 p->ps->pscol = p->ps->left; 832 p->ps->psrow = p->ps->top; 833 p->ps->flags |= PS_NEWPAGE; 834 ps_setfont(p, TERMFONT_NONE); 835 } 836 837 static void 838 ps_pletter(struct termp *p, int c) 839 { 840 int f; 841 842 /* 843 * If we haven't opened a page context, then output that we're 844 * in a new page and make sure the font is correctly set. 845 */ 846 847 if (PS_NEWPAGE & p->ps->flags) { 848 if (TERMTYPE_PS == p->type) { 849 ps_printf(p, "%%%%Page: %zu %zu\n", 850 p->ps->pages + 1, p->ps->pages + 1); 851 ps_printf(p, "/%s %zu selectfont\n", 852 fonts[(int)p->ps->lastf].name, 853 p->ps->scale); 854 } else { 855 pdf_obj(p, p->ps->pdfbody + 856 p->ps->pages * 4); 857 ps_printf(p, "<<\n"); 858 ps_printf(p, "/Length %zu 0 R\n", 859 p->ps->pdfbody + 1 + p->ps->pages * 4); 860 ps_printf(p, ">>\nstream\n"); 861 } 862 p->ps->pdflastpg = p->ps->pdfbytes; 863 p->ps->flags &= ~PS_NEWPAGE; 864 } 865 866 /* 867 * If we're not in a PostScript "word" context, then open one 868 * now at the current cursor. 869 */ 870 871 if ( ! (PS_INLINE & p->ps->flags)) { 872 if (TERMTYPE_PS != p->type) { 873 ps_printf(p, "BT\n/F%d %zu Tf\n", 874 (int)p->ps->lastf, p->ps->scale); 875 ps_printf(p, "%.3f %.3f Td\n(", 876 AFM2PNT(p, p->ps->pscol), 877 AFM2PNT(p, p->ps->psrow)); 878 } else 879 ps_printf(p, "%.3f %.3f moveto\n(", 880 AFM2PNT(p, p->ps->pscol), 881 AFM2PNT(p, p->ps->psrow)); 882 p->ps->flags |= PS_INLINE; 883 } 884 885 assert( ! (PS_NEWPAGE & p->ps->flags)); 886 887 /* 888 * We need to escape these characters as per the PostScript 889 * specification. We would also escape non-graphable characters 890 * (like tabs), but none of them would get to this point and 891 * it's superfluous to abort() on them. 892 */ 893 894 switch (c) { 895 case '(': 896 /* FALLTHROUGH */ 897 case ')': 898 /* FALLTHROUGH */ 899 case '\\': 900 ps_putchar(p, '\\'); 901 break; 902 default: 903 break; 904 } 905 906 /* Write the character and adjust where we are on the page. */ 907 908 f = (int)p->ps->lastf; 909 910 if (c <= 32 || (c - 32 >= MAXCHAR)) { 911 ps_putchar(p, ' '); 912 p->ps->pscol += (size_t)fonts[f].gly[0].wx; 913 return; 914 } 915 916 ps_putchar(p, (char)c); 917 c -= 32; 918 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 919 } 920 921 static void 922 ps_pclose(struct termp *p) 923 { 924 925 /* 926 * Spit out that we're exiting a word context (this is a 927 * "partial close" because we don't check the last-char buffer 928 * or anything). 929 */ 930 931 if ( ! (PS_INLINE & p->ps->flags)) 932 return; 933 934 if (TERMTYPE_PS != p->type) { 935 ps_printf(p, ") Tj\nET\n"); 936 } else 937 ps_printf(p, ") show\n"); 938 939 p->ps->flags &= ~PS_INLINE; 940 } 941 942 static void 943 ps_fclose(struct termp *p) 944 { 945 946 /* 947 * Strong closure: if we have a last-char, spit it out after 948 * checking that we're in the right font mode. This will of 949 * course open a new scope, if applicable. 950 * 951 * Following this, close out any scope that's open. 952 */ 953 954 if ('\0' != p->ps->last) { 955 if (p->ps->lastf != TERMFONT_NONE) { 956 ps_pclose(p); 957 ps_setfont(p, TERMFONT_NONE); 958 } 959 ps_pletter(p, p->ps->last); 960 p->ps->last = '\0'; 961 } 962 963 if ( ! (PS_INLINE & p->ps->flags)) 964 return; 965 966 ps_pclose(p); 967 } 968 969 static void 970 ps_letter(struct termp *p, int arg) 971 { 972 char cc, c; 973 974 c = arg >= 128 || arg <= 0 ? '?' : arg; 975 976 /* 977 * State machine dictates whether to buffer the last character 978 * or not. Basically, encoded words are detected by checking if 979 * we're an "8" and switching on the buffer. Then we put "8" in 980 * our buffer, and on the next charater, flush both character 981 * and buffer. Thus, "regular" words are detected by having a 982 * regular character and a regular buffer character. 983 */ 984 985 if ('\0' == p->ps->last) { 986 assert(8 != c); 987 p->ps->last = c; 988 return; 989 } else if (8 == p->ps->last) { 990 assert(8 != c); 991 p->ps->last = '\0'; 992 } else if (8 == c) { 993 assert(8 != p->ps->last); 994 if ('_' == p->ps->last) { 995 if (p->ps->lastf != TERMFONT_UNDER) { 996 ps_pclose(p); 997 ps_setfont(p, TERMFONT_UNDER); 998 } 999 } else if (p->ps->lastf != TERMFONT_BOLD) { 1000 ps_pclose(p); 1001 ps_setfont(p, TERMFONT_BOLD); 1002 } 1003 p->ps->last = c; 1004 return; 1005 } else { 1006 if (p->ps->lastf != TERMFONT_NONE) { 1007 ps_pclose(p); 1008 ps_setfont(p, TERMFONT_NONE); 1009 } 1010 cc = p->ps->last; 1011 p->ps->last = c; 1012 c = cc; 1013 } 1014 1015 ps_pletter(p, c); 1016 } 1017 1018 static void 1019 ps_advance(struct termp *p, size_t len) 1020 { 1021 1022 /* 1023 * Advance some spaces. This can probably be made smarter, 1024 * i.e., to have multiple space-separated words in the same 1025 * scope, but this is easier: just close out the current scope 1026 * and readjust our column settings. 1027 */ 1028 1029 ps_fclose(p); 1030 p->ps->pscol += len; 1031 } 1032 1033 static void 1034 ps_endline(struct termp *p) 1035 { 1036 1037 /* Close out any scopes we have open: we're at eoln. */ 1038 1039 ps_fclose(p); 1040 1041 /* 1042 * If we're in the margin, don't try to recalculate our current 1043 * row. XXX: if the column tries to be fancy with multiple 1044 * lines, we'll do nasty stuff. 1045 */ 1046 1047 if (PS_MARGINS & p->ps->flags) 1048 return; 1049 1050 /* Left-justify. */ 1051 1052 p->ps->pscol = p->ps->left; 1053 1054 /* If we haven't printed anything, return. */ 1055 1056 if (PS_NEWPAGE & p->ps->flags) 1057 return; 1058 1059 /* 1060 * Put us down a line. If we're at the page bottom, spit out a 1061 * showpage and restart our row. 1062 */ 1063 1064 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1065 p->ps->psrow -= p->ps->lineheight; 1066 return; 1067 } 1068 1069 ps_closepage(p); 1070 } 1071 1072 static void 1073 ps_setfont(struct termp *p, enum termfont f) 1074 { 1075 1076 assert(f < TERMFONT__MAX); 1077 p->ps->lastf = f; 1078 1079 /* 1080 * If we're still at the top of the page, let the font-setting 1081 * be delayed until we actually have stuff to print. 1082 */ 1083 1084 if (PS_NEWPAGE & p->ps->flags) 1085 return; 1086 1087 if (TERMTYPE_PS == p->type) 1088 ps_printf(p, "/%s %zu selectfont\n", 1089 fonts[(int)f].name, p->ps->scale); 1090 else 1091 ps_printf(p, "/F%d %zu Tf\n", 1092 (int)f, p->ps->scale); 1093 } 1094 1095 static size_t 1096 ps_width(const struct termp *p, int c) 1097 { 1098 1099 if (c <= 32 || c - 32 >= MAXCHAR) 1100 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx); 1101 1102 c -= 32; 1103 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1104 } 1105 1106 static double 1107 ps_hspan(const struct termp *p, const struct roffsu *su) 1108 { 1109 double r; 1110 1111 /* 1112 * All of these measurements are derived by converting from the 1113 * native measurement to AFM units. 1114 */ 1115 1116 switch (su->unit) { 1117 case SCALE_CM: 1118 r = PNT2AFM(p, su->scale * 28.34); 1119 break; 1120 case SCALE_IN: 1121 r = PNT2AFM(p, su->scale * 72); 1122 break; 1123 case SCALE_PC: 1124 r = PNT2AFM(p, su->scale * 12); 1125 break; 1126 case SCALE_PT: 1127 r = PNT2AFM(p, su->scale * 100); 1128 break; 1129 case SCALE_EM: 1130 r = su->scale * 1131 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1132 break; 1133 case SCALE_MM: 1134 r = PNT2AFM(p, su->scale * 2.834); 1135 break; 1136 case SCALE_EN: 1137 r = su->scale * 1138 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1139 break; 1140 case SCALE_VS: 1141 r = su->scale * p->ps->lineheight; 1142 break; 1143 default: 1144 r = su->scale; 1145 break; 1146 } 1147 1148 return(r); 1149 } 1150 1151 static void 1152 ps_growbuf(struct termp *p, size_t sz) 1153 { 1154 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1155 return; 1156 1157 if (sz < PS_BUFSLOP) 1158 sz = PS_BUFSLOP; 1159 1160 p->ps->psmargsz += sz; 1161 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1162 } 1163