1 /* $Id: term_ps.c,v 1.62 2014/08/01 19:25:52 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 #ifdef HAVE_CONFIG_H 19 #include "config.h" 20 #endif 21 22 #include <sys/types.h> 23 24 #include <assert.h> 25 #include <stdarg.h> 26 #include <stdint.h> 27 #include <stdio.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include <time.h> 31 #include <unistd.h> 32 33 #include "mandoc.h" 34 #include "mandoc_aux.h" 35 #include "out.h" 36 #include "main.h" 37 #include "term.h" 38 39 /* These work the buffer used by the header and footer. */ 40 #define PS_BUFSLOP 128 41 42 /* Convert PostScript point "x" to an AFM unit. */ 43 #define PNT2AFM(p, x) \ 44 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale)) 45 46 /* Convert an AFM unit "x" to a PostScript points */ 47 #define AFM2PNT(p, x) \ 48 ((double)(x) / (1000.0 / (double)(p)->ps->scale)) 49 50 struct glyph { 51 unsigned short wx; /* WX in AFM */ 52 }; 53 54 struct font { 55 const char *name; /* FontName in AFM */ 56 #define MAXCHAR 95 /* total characters we can handle */ 57 struct glyph gly[MAXCHAR]; /* glyph metrics */ 58 }; 59 60 struct termp_ps { 61 int flags; 62 #define PS_INLINE (1 << 0) /* we're in a word */ 63 #define PS_MARGINS (1 << 1) /* we're in the margins */ 64 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ 65 size_t pscol; /* visible column (AFM units) */ 66 size_t psrow; /* visible row (AFM units) */ 67 char *psmarg; /* margin buf */ 68 size_t psmargsz; /* margin buf size */ 69 size_t psmargcur; /* cur index in margin buf */ 70 char last; /* character buffer */ 71 enum termfont lastf; /* last set font */ 72 size_t scale; /* font scaling factor */ 73 size_t pages; /* number of pages shown */ 74 size_t lineheight; /* line height (AFM units) */ 75 size_t top; /* body top (AFM units) */ 76 size_t bottom; /* body bottom (AFM units) */ 77 size_t height; /* page height (AFM units */ 78 size_t width; /* page width (AFM units) */ 79 size_t lastwidth; /* page width before last ll */ 80 size_t left; /* body left (AFM units) */ 81 size_t header; /* header pos (AFM units) */ 82 size_t footer; /* footer pos (AFM units) */ 83 size_t pdfbytes; /* current output byte */ 84 size_t pdflastpg; /* byte of last page mark */ 85 size_t pdfbody; /* start of body object */ 86 size_t *pdfobjs; /* table of object offsets */ 87 size_t pdfobjsz; /* size of pdfobjs */ 88 }; 89 90 static double ps_hspan(const struct termp *, 91 const struct roffsu *); 92 static size_t ps_width(const struct termp *, int); 93 static void ps_advance(struct termp *, size_t); 94 static void ps_begin(struct termp *); 95 static void ps_closepage(struct termp *); 96 static void ps_end(struct termp *); 97 static void ps_endline(struct termp *); 98 static void ps_fclose(struct termp *); 99 static void ps_growbuf(struct termp *, size_t); 100 static void ps_letter(struct termp *, int); 101 static void ps_pclose(struct termp *); 102 static void ps_pletter(struct termp *, int); 103 #if __GNUC__ - 0 >= 4 104 __attribute__((__format__ (__printf__, 2, 3))) 105 #endif 106 static void ps_printf(struct termp *, const char *, ...); 107 static void ps_putchar(struct termp *, char); 108 static void ps_setfont(struct termp *, enum termfont); 109 static void ps_setwidth(struct termp *, int, size_t); 110 static struct termp *pspdf_alloc(char *); 111 static void pdf_obj(struct termp *, size_t); 112 113 /* 114 * We define, for the time being, three fonts: bold, oblique/italic, and 115 * normal (roman). The following table hard-codes the font metrics for 116 * ASCII, i.e., 32--127. 117 */ 118 119 static const struct font fonts[TERMFONT__MAX] = { 120 { "Times-Roman", { 121 { 250 }, 122 { 333 }, 123 { 408 }, 124 { 500 }, 125 { 500 }, 126 { 833 }, 127 { 778 }, 128 { 333 }, 129 { 333 }, 130 { 333 }, 131 { 500 }, 132 { 564 }, 133 { 250 }, 134 { 333 }, 135 { 250 }, 136 { 278 }, 137 { 500 }, 138 { 500 }, 139 { 500 }, 140 { 500 }, 141 { 500 }, 142 { 500 }, 143 { 500 }, 144 { 500 }, 145 { 500 }, 146 { 500 }, 147 { 278 }, 148 { 278 }, 149 { 564 }, 150 { 564 }, 151 { 564 }, 152 { 444 }, 153 { 921 }, 154 { 722 }, 155 { 667 }, 156 { 667 }, 157 { 722 }, 158 { 611 }, 159 { 556 }, 160 { 722 }, 161 { 722 }, 162 { 333 }, 163 { 389 }, 164 { 722 }, 165 { 611 }, 166 { 889 }, 167 { 722 }, 168 { 722 }, 169 { 556 }, 170 { 722 }, 171 { 667 }, 172 { 556 }, 173 { 611 }, 174 { 722 }, 175 { 722 }, 176 { 944 }, 177 { 722 }, 178 { 722 }, 179 { 611 }, 180 { 333 }, 181 { 278 }, 182 { 333 }, 183 { 469 }, 184 { 500 }, 185 { 333 }, 186 { 444 }, 187 { 500 }, 188 { 444 }, 189 { 500}, 190 { 444}, 191 { 333}, 192 { 500}, 193 { 500}, 194 { 278}, 195 { 278}, 196 { 500}, 197 { 278}, 198 { 778}, 199 { 500}, 200 { 500}, 201 { 500}, 202 { 500}, 203 { 333}, 204 { 389}, 205 { 278}, 206 { 500}, 207 { 500}, 208 { 722}, 209 { 500}, 210 { 500}, 211 { 444}, 212 { 480}, 213 { 200}, 214 { 480}, 215 { 541}, 216 } }, 217 { "Times-Bold", { 218 { 250 }, 219 { 333 }, 220 { 555 }, 221 { 500 }, 222 { 500 }, 223 { 1000 }, 224 { 833 }, 225 { 333 }, 226 { 333 }, 227 { 333 }, 228 { 500 }, 229 { 570 }, 230 { 250 }, 231 { 333 }, 232 { 250 }, 233 { 278 }, 234 { 500 }, 235 { 500 }, 236 { 500 }, 237 { 500 }, 238 { 500 }, 239 { 500 }, 240 { 500 }, 241 { 500 }, 242 { 500 }, 243 { 500 }, 244 { 333 }, 245 { 333 }, 246 { 570 }, 247 { 570 }, 248 { 570 }, 249 { 500 }, 250 { 930 }, 251 { 722 }, 252 { 667 }, 253 { 722 }, 254 { 722 }, 255 { 667 }, 256 { 611 }, 257 { 778 }, 258 { 778 }, 259 { 389 }, 260 { 500 }, 261 { 778 }, 262 { 667 }, 263 { 944 }, 264 { 722 }, 265 { 778 }, 266 { 611 }, 267 { 778 }, 268 { 722 }, 269 { 556 }, 270 { 667 }, 271 { 722 }, 272 { 722 }, 273 { 1000 }, 274 { 722 }, 275 { 722 }, 276 { 667 }, 277 { 333 }, 278 { 278 }, 279 { 333 }, 280 { 581 }, 281 { 500 }, 282 { 333 }, 283 { 500 }, 284 { 556 }, 285 { 444 }, 286 { 556 }, 287 { 444 }, 288 { 333 }, 289 { 500 }, 290 { 556 }, 291 { 278 }, 292 { 333 }, 293 { 556 }, 294 { 278 }, 295 { 833 }, 296 { 556 }, 297 { 500 }, 298 { 556 }, 299 { 556 }, 300 { 444 }, 301 { 389 }, 302 { 333 }, 303 { 556 }, 304 { 500 }, 305 { 722 }, 306 { 500 }, 307 { 500 }, 308 { 444 }, 309 { 394 }, 310 { 220 }, 311 { 394 }, 312 { 520 }, 313 } }, 314 { "Times-Italic", { 315 { 250 }, 316 { 333 }, 317 { 420 }, 318 { 500 }, 319 { 500 }, 320 { 833 }, 321 { 778 }, 322 { 333 }, 323 { 333 }, 324 { 333 }, 325 { 500 }, 326 { 675 }, 327 { 250 }, 328 { 333 }, 329 { 250 }, 330 { 278 }, 331 { 500 }, 332 { 500 }, 333 { 500 }, 334 { 500 }, 335 { 500 }, 336 { 500 }, 337 { 500 }, 338 { 500 }, 339 { 500 }, 340 { 500 }, 341 { 333 }, 342 { 333 }, 343 { 675 }, 344 { 675 }, 345 { 675 }, 346 { 500 }, 347 { 920 }, 348 { 611 }, 349 { 611 }, 350 { 667 }, 351 { 722 }, 352 { 611 }, 353 { 611 }, 354 { 722 }, 355 { 722 }, 356 { 333 }, 357 { 444 }, 358 { 667 }, 359 { 556 }, 360 { 833 }, 361 { 667 }, 362 { 722 }, 363 { 611 }, 364 { 722 }, 365 { 611 }, 366 { 500 }, 367 { 556 }, 368 { 722 }, 369 { 611 }, 370 { 833 }, 371 { 611 }, 372 { 556 }, 373 { 556 }, 374 { 389 }, 375 { 278 }, 376 { 389 }, 377 { 422 }, 378 { 500 }, 379 { 333 }, 380 { 500 }, 381 { 500 }, 382 { 444 }, 383 { 500 }, 384 { 444 }, 385 { 278 }, 386 { 500 }, 387 { 500 }, 388 { 278 }, 389 { 278 }, 390 { 444 }, 391 { 278 }, 392 { 722 }, 393 { 500 }, 394 { 500 }, 395 { 500 }, 396 { 500 }, 397 { 389 }, 398 { 389 }, 399 { 278 }, 400 { 500 }, 401 { 444 }, 402 { 667 }, 403 { 444 }, 404 { 444 }, 405 { 389 }, 406 { 400 }, 407 { 275 }, 408 { 400 }, 409 { 541 }, 410 } }, 411 }; 412 413 void * 414 pdf_alloc(char *outopts) 415 { 416 struct termp *p; 417 418 if (NULL != (p = pspdf_alloc(outopts))) 419 p->type = TERMTYPE_PDF; 420 421 return(p); 422 } 423 424 void * 425 ps_alloc(char *outopts) 426 { 427 struct termp *p; 428 429 if (NULL != (p = pspdf_alloc(outopts))) 430 p->type = TERMTYPE_PS; 431 432 return(p); 433 } 434 435 static struct termp * 436 pspdf_alloc(char *outopts) 437 { 438 struct termp *p; 439 unsigned int pagex, pagey; 440 size_t marginx, marginy, lineheight; 441 const char *toks[2]; 442 const char *pp; 443 char *v; 444 445 p = mandoc_calloc(1, sizeof(struct termp)); 446 p->enc = TERMENC_ASCII; 447 p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); 448 449 p->advance = ps_advance; 450 p->begin = ps_begin; 451 p->end = ps_end; 452 p->endline = ps_endline; 453 p->hspan = ps_hspan; 454 p->letter = ps_letter; 455 p->setwidth = ps_setwidth; 456 p->width = ps_width; 457 458 toks[0] = "paper"; 459 toks[1] = NULL; 460 461 pp = NULL; 462 463 while (outopts && *outopts) 464 switch (getsubopt(&outopts, UNCONST(toks), &v)) { 465 case 0: 466 pp = v; 467 break; 468 default: 469 break; 470 } 471 472 /* Default to US letter (millimetres). */ 473 474 pagex = 216; 475 pagey = 279; 476 477 /* 478 * The ISO-269 paper sizes can be calculated automatically, but 479 * it would require bringing in -lm for pow() and I'd rather not 480 * do that. So just do it the easy way for now. Since this 481 * only happens once, I'm not terribly concerned. 482 */ 483 484 if (pp && strcasecmp(pp, "letter")) { 485 if (0 == strcasecmp(pp, "a3")) { 486 pagex = 297; 487 pagey = 420; 488 } else if (0 == strcasecmp(pp, "a4")) { 489 pagex = 210; 490 pagey = 297; 491 } else if (0 == strcasecmp(pp, "a5")) { 492 pagex = 148; 493 pagey = 210; 494 } else if (0 == strcasecmp(pp, "legal")) { 495 pagex = 216; 496 pagey = 356; 497 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) 498 fprintf(stderr, "%s: Unknown paper\n", pp); 499 } 500 501 /* 502 * This MUST be defined before any PNT2AFM or AFM2PNT 503 * calculations occur. 504 */ 505 506 p->ps->scale = 11; 507 508 /* Remember millimetres -> AFM units. */ 509 510 pagex = PNT2AFM(p, ((double)pagex * 2.834)); 511 pagey = PNT2AFM(p, ((double)pagey * 2.834)); 512 513 /* Margins are 1/9 the page x and y. */ 514 515 marginx = (size_t)((double)pagex / 9.0); 516 marginy = (size_t)((double)pagey / 9.0); 517 518 /* Line-height is 1.4em. */ 519 520 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4)); 521 522 p->ps->width = p->ps->lastwidth = (size_t)pagex; 523 p->ps->height = (size_t)pagey; 524 p->ps->header = pagey - (marginy / 2) - (lineheight / 2); 525 p->ps->top = pagey - marginy; 526 p->ps->footer = (marginy / 2) - (lineheight / 2); 527 p->ps->bottom = marginy; 528 p->ps->left = marginx; 529 p->ps->lineheight = lineheight; 530 531 p->defrmargin = pagex - (marginx * 2); 532 return(p); 533 } 534 535 static void 536 ps_setwidth(struct termp *p, int iop, size_t width) 537 { 538 size_t lastwidth; 539 540 lastwidth = p->ps->width; 541 if (0 < iop) 542 p->ps->width += width; 543 else if (0 > iop) 544 p->ps->width -= width; 545 else 546 p->ps->width = width ? width : p->ps->lastwidth; 547 p->ps->lastwidth = lastwidth; 548 } 549 550 void 551 pspdf_free(void *arg) 552 { 553 struct termp *p; 554 555 p = (struct termp *)arg; 556 557 if (p->ps->psmarg) 558 free(p->ps->psmarg); 559 if (p->ps->pdfobjs) 560 free(p->ps->pdfobjs); 561 562 free(p->ps); 563 term_free(p); 564 } 565 566 static void 567 ps_printf(struct termp *p, const char *fmt, ...) 568 { 569 va_list ap; 570 int pos, len; 571 572 va_start(ap, fmt); 573 574 /* 575 * If we're running in regular mode, then pipe directly into 576 * vprintf(). If we're processing margins, then push the data 577 * into our growable margin buffer. 578 */ 579 580 if ( ! (PS_MARGINS & p->ps->flags)) { 581 len = vprintf(fmt, ap); 582 va_end(ap); 583 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len; 584 return; 585 } 586 587 /* 588 * XXX: I assume that the in-margin print won't exceed 589 * PS_BUFSLOP (128 bytes), which is reasonable but still an 590 * assumption that will cause pukeage if it's not the case. 591 */ 592 593 ps_growbuf(p, PS_BUFSLOP); 594 595 pos = (int)p->ps->psmargcur; 596 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap); 597 598 va_end(ap); 599 600 p->ps->psmargcur = strlen(p->ps->psmarg); 601 } 602 603 static void 604 ps_putchar(struct termp *p, char c) 605 { 606 int pos; 607 608 /* See ps_printf(). */ 609 610 if ( ! (PS_MARGINS & p->ps->flags)) { 611 putchar(c); 612 p->ps->pdfbytes++; 613 return; 614 } 615 616 ps_growbuf(p, 2); 617 618 pos = (int)p->ps->psmargcur++; 619 p->ps->psmarg[pos++] = c; 620 p->ps->psmarg[pos] = '\0'; 621 } 622 623 static void 624 pdf_obj(struct termp *p, size_t obj) 625 { 626 627 assert(obj > 0); 628 629 if ((obj - 1) >= p->ps->pdfobjsz) { 630 p->ps->pdfobjsz = obj + 128; 631 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs, 632 p->ps->pdfobjsz, sizeof(size_t)); 633 } 634 635 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes; 636 ps_printf(p, "%zu 0 obj\n", obj); 637 } 638 639 static void 640 ps_closepage(struct termp *p) 641 { 642 int i; 643 size_t len, base; 644 645 /* 646 * Close out a page that we've already flushed to output. In 647 * PostScript, we simply note that the page must be showed. In 648 * PDF, we must now create the Length, Resource, and Page node 649 * for the page contents. 650 */ 651 652 assert(p->ps->psmarg && p->ps->psmarg[0]); 653 ps_printf(p, "%s", p->ps->psmarg); 654 655 if (TERMTYPE_PS != p->type) { 656 ps_printf(p, "ET\n"); 657 658 len = p->ps->pdfbytes - p->ps->pdflastpg; 659 base = p->ps->pages * 4 + p->ps->pdfbody; 660 661 ps_printf(p, "endstream\nendobj\n"); 662 663 /* Length of content. */ 664 pdf_obj(p, base + 1); 665 ps_printf(p, "%zu\nendobj\n", len); 666 667 /* Resource for content. */ 668 pdf_obj(p, base + 2); 669 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n"); 670 ps_printf(p, "/Font <<\n"); 671 for (i = 0; i < (int)TERMFONT__MAX; i++) 672 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i); 673 ps_printf(p, ">>\n>>\n"); 674 675 /* Page node. */ 676 pdf_obj(p, base + 3); 677 ps_printf(p, "<<\n"); 678 ps_printf(p, "/Type /Page\n"); 679 ps_printf(p, "/Parent 2 0 R\n"); 680 ps_printf(p, "/Resources %zu 0 R\n", base + 2); 681 ps_printf(p, "/Contents %zu 0 R\n", base); 682 ps_printf(p, ">>\nendobj\n"); 683 } else 684 ps_printf(p, "showpage\n"); 685 686 p->ps->pages++; 687 p->ps->psrow = p->ps->top; 688 assert( ! (PS_NEWPAGE & p->ps->flags)); 689 p->ps->flags |= PS_NEWPAGE; 690 } 691 692 static void 693 ps_end(struct termp *p) 694 { 695 size_t i, xref, base; 696 697 /* 698 * At the end of the file, do one last showpage. This is the 699 * same behaviour as groff(1) and works for multiple pages as 700 * well as just one. 701 */ 702 703 if ( ! (PS_NEWPAGE & p->ps->flags)) { 704 assert(0 == p->ps->flags); 705 assert('\0' == p->ps->last); 706 ps_closepage(p); 707 } 708 709 if (TERMTYPE_PS == p->type) { 710 ps_printf(p, "%%%%Trailer\n"); 711 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages); 712 ps_printf(p, "%%%%EOF\n"); 713 return; 714 } 715 716 pdf_obj(p, 2); 717 ps_printf(p, "<<\n/Type /Pages\n"); 718 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n", 719 (size_t)AFM2PNT(p, p->ps->width), 720 (size_t)AFM2PNT(p, p->ps->height)); 721 722 ps_printf(p, "/Count %zu\n", p->ps->pages); 723 ps_printf(p, "/Kids ["); 724 725 for (i = 0; i < p->ps->pages; i++) 726 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3); 727 728 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4; 729 730 ps_printf(p, "]\n>>\nendobj\n"); 731 pdf_obj(p, base); 732 ps_printf(p, "<<\n"); 733 ps_printf(p, "/Type /Catalog\n"); 734 ps_printf(p, "/Pages 2 0 R\n"); 735 ps_printf(p, ">>\n"); 736 xref = p->ps->pdfbytes; 737 ps_printf(p, "xref\n"); 738 ps_printf(p, "0 %zu\n", base + 1); 739 ps_printf(p, "0000000000 65535 f \n"); 740 741 for (i = 0; i < base; i++) 742 ps_printf(p, "%.10zu 00000 n \n", 743 p->ps->pdfobjs[(int)i]); 744 745 ps_printf(p, "trailer\n"); 746 ps_printf(p, "<<\n"); 747 ps_printf(p, "/Size %zu\n", base + 1); 748 ps_printf(p, "/Root %zu 0 R\n", base); 749 ps_printf(p, "/Info 1 0 R\n"); 750 ps_printf(p, ">>\n"); 751 ps_printf(p, "startxref\n"); 752 ps_printf(p, "%zu\n", xref); 753 ps_printf(p, "%%%%EOF\n"); 754 } 755 756 static void 757 ps_begin(struct termp *p) 758 { 759 time_t t; 760 int i; 761 762 /* 763 * Print margins into margin buffer. Nothing gets output to the 764 * screen yet, so we don't need to initialise the primary state. 765 */ 766 767 if (p->ps->psmarg) { 768 assert(p->ps->psmargsz); 769 p->ps->psmarg[0] = '\0'; 770 } 771 772 /*p->ps->pdfbytes = 0;*/ 773 p->ps->psmargcur = 0; 774 p->ps->flags = PS_MARGINS; 775 p->ps->pscol = p->ps->left; 776 p->ps->psrow = p->ps->header; 777 778 ps_setfont(p, TERMFONT_NONE); 779 780 (*p->headf)(p, p->argf); 781 (*p->endline)(p); 782 783 p->ps->pscol = p->ps->left; 784 p->ps->psrow = p->ps->footer; 785 786 (*p->footf)(p, p->argf); 787 (*p->endline)(p); 788 789 p->ps->flags &= ~PS_MARGINS; 790 791 assert(0 == p->ps->flags); 792 assert(p->ps->psmarg); 793 assert('\0' != p->ps->psmarg[0]); 794 795 /* 796 * Print header and initialise page state. Following this, 797 * stuff gets printed to the screen, so make sure we're sane. 798 */ 799 800 t = time(NULL); 801 802 if (TERMTYPE_PS == p->type) { 803 ps_printf(p, "%%!PS-Adobe-3.0\n"); 804 ps_printf(p, "%%%%CreationDate: %s", ctime(&t)); 805 ps_printf(p, "%%%%DocumentData: Clean7Bit\n"); 806 ps_printf(p, "%%%%Orientation: Portrait\n"); 807 ps_printf(p, "%%%%Pages: (atend)\n"); 808 ps_printf(p, "%%%%PageOrder: Ascend\n"); 809 ps_printf(p, "%%%%DocumentMedia: " 810 "Default %zu %zu 0 () ()\n", 811 (size_t)AFM2PNT(p, p->ps->width), 812 (size_t)AFM2PNT(p, p->ps->height)); 813 ps_printf(p, "%%%%DocumentNeededResources: font"); 814 815 for (i = 0; i < (int)TERMFONT__MAX; i++) 816 ps_printf(p, " %s", fonts[i].name); 817 818 ps_printf(p, "\n%%%%EndComments\n"); 819 } else { 820 ps_printf(p, "%%PDF-1.1\n"); 821 pdf_obj(p, 1); 822 ps_printf(p, "<<\n"); 823 ps_printf(p, ">>\n"); 824 ps_printf(p, "endobj\n"); 825 826 for (i = 0; i < (int)TERMFONT__MAX; i++) { 827 pdf_obj(p, (size_t)i + 3); 828 ps_printf(p, "<<\n"); 829 ps_printf(p, "/Type /Font\n"); 830 ps_printf(p, "/Subtype /Type1\n"); 831 ps_printf(p, "/Name /F%d\n", i); 832 ps_printf(p, "/BaseFont /%s\n", fonts[i].name); 833 ps_printf(p, ">>\n"); 834 } 835 } 836 837 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3; 838 p->ps->pscol = p->ps->left; 839 p->ps->psrow = p->ps->top; 840 p->ps->flags |= PS_NEWPAGE; 841 ps_setfont(p, TERMFONT_NONE); 842 } 843 844 static void 845 ps_pletter(struct termp *p, int c) 846 { 847 int f; 848 849 /* 850 * If we haven't opened a page context, then output that we're 851 * in a new page and make sure the font is correctly set. 852 */ 853 854 if (PS_NEWPAGE & p->ps->flags) { 855 if (TERMTYPE_PS == p->type) { 856 ps_printf(p, "%%%%Page: %zu %zu\n", 857 p->ps->pages + 1, p->ps->pages + 1); 858 ps_printf(p, "/%s %zu selectfont\n", 859 fonts[(int)p->ps->lastf].name, 860 p->ps->scale); 861 } else { 862 pdf_obj(p, p->ps->pdfbody + 863 p->ps->pages * 4); 864 ps_printf(p, "<<\n"); 865 ps_printf(p, "/Length %zu 0 R\n", 866 p->ps->pdfbody + 1 + 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, 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 c = 32; 919 920 ps_putchar(p, (char)c); 921 c -= 32; 922 p->ps->pscol += (size_t)fonts[f].gly[c].wx; 923 } 924 925 static void 926 ps_pclose(struct termp *p) 927 { 928 929 /* 930 * Spit out that we're exiting a word context (this is a 931 * "partial close" because we don't check the last-char buffer 932 * or anything). 933 */ 934 935 if ( ! (PS_INLINE & p->ps->flags)) 936 return; 937 938 if (TERMTYPE_PS != p->type) { 939 ps_printf(p, ") Tj\nET\n"); 940 } else 941 ps_printf(p, ") show\n"); 942 943 p->ps->flags &= ~PS_INLINE; 944 } 945 946 static void 947 ps_fclose(struct termp *p) 948 { 949 950 /* 951 * Strong closure: if we have a last-char, spit it out after 952 * checking that we're in the right font mode. This will of 953 * course open a new scope, if applicable. 954 * 955 * Following this, close out any scope that's open. 956 */ 957 958 if ('\0' != p->ps->last) { 959 if (p->ps->lastf != TERMFONT_NONE) { 960 ps_pclose(p); 961 ps_setfont(p, TERMFONT_NONE); 962 } 963 ps_pletter(p, p->ps->last); 964 p->ps->last = '\0'; 965 } 966 967 if ( ! (PS_INLINE & p->ps->flags)) 968 return; 969 970 ps_pclose(p); 971 } 972 973 static void 974 ps_letter(struct termp *p, int arg) 975 { 976 char cc, c; 977 978 c = arg >= 128 || arg <= 0 ? '?' : arg; 979 980 /* 981 * State machine dictates whether to buffer the last character 982 * or not. Basically, encoded words are detected by checking if 983 * we're an "8" and switching on the buffer. Then we put "8" in 984 * our buffer, and on the next charater, flush both character 985 * and buffer. Thus, "regular" words are detected by having a 986 * regular character and a regular buffer character. 987 */ 988 989 if ('\0' == p->ps->last) { 990 assert(8 != c); 991 p->ps->last = c; 992 return; 993 } else if (8 == p->ps->last) { 994 assert(8 != c); 995 p->ps->last = '\0'; 996 } else if (8 == c) { 997 assert(8 != p->ps->last); 998 if ('_' == p->ps->last) { 999 if (p->ps->lastf != TERMFONT_UNDER) { 1000 ps_pclose(p); 1001 ps_setfont(p, TERMFONT_UNDER); 1002 } 1003 } else if (p->ps->lastf != TERMFONT_BOLD) { 1004 ps_pclose(p); 1005 ps_setfont(p, TERMFONT_BOLD); 1006 } 1007 p->ps->last = c; 1008 return; 1009 } else { 1010 if (p->ps->lastf != TERMFONT_NONE) { 1011 ps_pclose(p); 1012 ps_setfont(p, TERMFONT_NONE); 1013 } 1014 cc = p->ps->last; 1015 p->ps->last = c; 1016 c = cc; 1017 } 1018 1019 ps_pletter(p, c); 1020 } 1021 1022 static void 1023 ps_advance(struct termp *p, size_t len) 1024 { 1025 1026 /* 1027 * Advance some spaces. This can probably be made smarter, 1028 * i.e., to have multiple space-separated words in the same 1029 * scope, but this is easier: just close out the current scope 1030 * and readjust our column settings. 1031 */ 1032 1033 ps_fclose(p); 1034 p->ps->pscol += len; 1035 } 1036 1037 static void 1038 ps_endline(struct termp *p) 1039 { 1040 1041 /* Close out any scopes we have open: we're at eoln. */ 1042 1043 ps_fclose(p); 1044 1045 /* 1046 * If we're in the margin, don't try to recalculate our current 1047 * row. XXX: if the column tries to be fancy with multiple 1048 * lines, we'll do nasty stuff. 1049 */ 1050 1051 if (PS_MARGINS & p->ps->flags) 1052 return; 1053 1054 /* Left-justify. */ 1055 1056 p->ps->pscol = p->ps->left; 1057 1058 /* If we haven't printed anything, return. */ 1059 1060 if (PS_NEWPAGE & p->ps->flags) 1061 return; 1062 1063 /* 1064 * Put us down a line. If we're at the page bottom, spit out a 1065 * showpage and restart our row. 1066 */ 1067 1068 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) { 1069 p->ps->psrow -= p->ps->lineheight; 1070 return; 1071 } 1072 1073 ps_closepage(p); 1074 } 1075 1076 static void 1077 ps_setfont(struct termp *p, enum termfont f) 1078 { 1079 1080 assert(f < TERMFONT__MAX); 1081 p->ps->lastf = f; 1082 1083 /* 1084 * If we're still at the top of the page, let the font-setting 1085 * be delayed until we actually have stuff to print. 1086 */ 1087 1088 if (PS_NEWPAGE & p->ps->flags) 1089 return; 1090 1091 if (TERMTYPE_PS == p->type) 1092 ps_printf(p, "/%s %zu selectfont\n", 1093 fonts[(int)f].name, p->ps->scale); 1094 else 1095 ps_printf(p, "/F%d %zu Tf\n", 1096 (int)f, p->ps->scale); 1097 } 1098 1099 static size_t 1100 ps_width(const struct termp *p, int c) 1101 { 1102 1103 if (c <= 32 || c - 32 >= MAXCHAR) 1104 c = 0; 1105 else 1106 c -= 32; 1107 1108 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); 1109 } 1110 1111 static double 1112 ps_hspan(const struct termp *p, const struct roffsu *su) 1113 { 1114 double r; 1115 1116 /* 1117 * All of these measurements are derived by converting from the 1118 * native measurement to AFM units. 1119 */ 1120 1121 switch (su->unit) { 1122 case SCALE_CM: 1123 r = PNT2AFM(p, su->scale * 28.34); 1124 break; 1125 case SCALE_IN: 1126 r = PNT2AFM(p, su->scale * 72.0); 1127 break; 1128 case SCALE_PC: 1129 r = PNT2AFM(p, su->scale * 12.0); 1130 break; 1131 case SCALE_PT: 1132 r = PNT2AFM(p, su->scale * 100.0); 1133 break; 1134 case SCALE_EM: 1135 r = su->scale * 1136 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx; 1137 break; 1138 case SCALE_MM: 1139 r = PNT2AFM(p, su->scale * 2.834); 1140 break; 1141 case SCALE_EN: 1142 r = su->scale * 1143 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx; 1144 break; 1145 case SCALE_VS: 1146 r = su->scale * p->ps->lineheight; 1147 break; 1148 default: 1149 r = su->scale; 1150 break; 1151 } 1152 1153 return(r); 1154 } 1155 1156 static void 1157 ps_growbuf(struct termp *p, size_t sz) 1158 { 1159 if (p->ps->psmargcur + sz <= p->ps->psmargsz) 1160 return; 1161 1162 if (sz < PS_BUFSLOP) 1163 sz = PS_BUFSLOP; 1164 1165 p->ps->psmargsz += sz; 1166 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz); 1167 } 1168