![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to term_ps.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [cvsweb.bsd.lv] / mandoc|
Return to term_ps.c CVS log | Up to [cvsweb.bsd.lv] / mandoc |
1.24 ! kristaps 1: /* $Id: term_ps.c,v 1.23 2010/06/30 15:05:02 kristaps Exp $ */
1.1 kristaps 2: /*
1.10 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 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:
1.4 kristaps 21: #include <sys/param.h>
22:
1.2 kristaps 23: #include <assert.h>
1.4 kristaps 24: #include <stdarg.h>
1.17 kristaps 25: #include <stdint.h>
1.2 kristaps 26: #include <stdio.h>
1.1 kristaps 27: #include <stdlib.h>
1.4 kristaps 28: #include <string.h>
1.13 kristaps 29: #include <time.h>
1.1 kristaps 30:
31: #include "out.h"
32: #include "main.h"
33: #include "term.h"
34:
1.21 kristaps 35: /* Convert PostScript point "x" to an AFM unit. */
36: #define PNT2AFM(p, x) \
37: (size_t)((double)(x) * (1000.0 / (double)(p)->engine.ps.scale))
38:
39: /* Convert an AFM unit "x" to a PostScript points */
40: #define AFM2PNT(p, x) \
41: (size_t)((double)(x) / (1000.0 / (double)(p)->engine.ps.scale))
42:
1.13 kristaps 43: struct glyph {
44: int wx; /* WX in AFM */
45: };
46:
47: struct font {
48: const char *name; /* FontName in AFM */
1.15 kristaps 49: #define MAXCHAR 95 /* total characters we can handle */
1.13 kristaps 50: struct glyph gly[MAXCHAR]; /* glyph metrics */
51: };
52:
53: /*
54: * We define, for the time being, three fonts: bold, oblique/italic, and
55: * normal (roman). The following table hard-codes the font metrics for
56: * ASCII, i.e., 32--127.
57: */
58:
1.16 kristaps 59: static const struct font fonts[TERMFONT__MAX] = {
1.24 ! kristaps 60: { "Times-Roman", {
! 61: { 250 },
! 62: { 333 },
! 63: { 408 },
! 64: { 500 },
! 65: { 500 },
! 66: { 833 },
! 67: { 778 },
! 68: { 333 },
! 69: { 333 },
! 70: { 333 },
! 71: { 500 },
! 72: { 564 },
! 73: { 250 },
! 74: { 333 },
! 75: { 250 },
! 76: { 278 },
! 77: { 500 },
! 78: { 500 },
! 79: { 500 },
! 80: { 500 },
! 81: { 500 },
! 82: { 500 },
! 83: { 500 },
! 84: { 500 },
! 85: { 500 },
! 86: { 500 },
! 87: { 278 },
! 88: { 278 },
! 89: { 564 },
! 90: { 564 },
! 91: { 564 },
! 92: { 444 },
! 93: { 921 },
! 94: { 722 },
! 95: { 667 },
! 96: { 667 },
! 97: { 722 },
! 98: { 611 },
! 99: { 556 },
! 100: { 722 },
! 101: { 722 },
! 102: { 333 },
! 103: { 389 },
! 104: { 722 },
! 105: { 611 },
! 106: { 889 },
! 107: { 722 },
! 108: { 722 },
! 109: { 556 },
! 110: { 722 },
! 111: { 667 },
! 112: { 556 },
! 113: { 611 },
! 114: { 722 },
! 115: { 722 },
! 116: { 944 },
! 117: { 722 },
! 118: { 722 },
! 119: { 611 },
! 120: { 333 },
! 121: { 278 },
! 122: { 333 },
! 123: { 469 },
! 124: { 500 },
! 125: { 333 },
! 126: { 444 },
! 127: { 500 },
! 128: { 444 },
! 129: { 500},
! 130: { 444},
! 131: { 333},
! 132: { 500},
! 133: { 500},
! 134: { 278},
! 135: { 278},
! 136: { 500},
! 137: { 278},
! 138: { 778},
! 139: { 500},
! 140: { 500},
! 141: { 500},
! 142: { 500},
! 143: { 333},
! 144: { 389},
! 145: { 278},
! 146: { 500},
! 147: { 500},
! 148: { 722},
! 149: { 500},
! 150: { 500},
! 151: { 444},
! 152: { 480},
! 153: { 200},
! 154: { 480},
! 155: { 541},
! 156: } },
! 157: { "Times-Bold", {
! 158: { 250 },
! 159: { 333 },
! 160: { 555 },
! 161: { 500 },
! 162: { 500 },
! 163: { 1000 },
! 164: { 833 },
! 165: { 333 },
! 166: { 333 },
! 167: { 333 },
! 168: { 500 },
! 169: { 570 },
! 170: { 250 },
! 171: { 333 },
! 172: { 250 },
! 173: { 278 },
! 174: { 500 },
! 175: { 500 },
! 176: { 500 },
! 177: { 500 },
! 178: { 500 },
! 179: { 500 },
! 180: { 500 },
! 181: { 500 },
! 182: { 500 },
! 183: { 500 },
! 184: { 333 },
! 185: { 333 },
! 186: { 570 },
! 187: { 570 },
! 188: { 570 },
! 189: { 500 },
! 190: { 930 },
! 191: { 722 },
! 192: { 667 },
! 193: { 722 },
! 194: { 722 },
! 195: { 667 },
! 196: { 611 },
! 197: { 778 },
! 198: { 778 },
! 199: { 389 },
! 200: { 500 },
! 201: { 778 },
! 202: { 667 },
! 203: { 944 },
! 204: { 722 },
! 205: { 778 },
! 206: { 611 },
! 207: { 778 },
! 208: { 722 },
! 209: { 556 },
! 210: { 667 },
! 211: { 722 },
! 212: { 722 },
! 213: { 1000 },
! 214: { 722 },
! 215: { 722 },
! 216: { 667 },
! 217: { 333 },
! 218: { 278 },
! 219: { 333 },
! 220: { 581 },
! 221: { 500 },
! 222: { 333 },
! 223: { 500 },
! 224: { 556 },
! 225: { 444 },
1.22 kristaps 226: { 556 },
1.24 ! kristaps 227: { 444 },
! 228: { 333 },
1.22 kristaps 229: { 500 },
1.24 ! kristaps 230: { 556 },
1.22 kristaps 231: { 278 },
1.24 ! kristaps 232: { 333 },
! 233: { 556 },
1.22 kristaps 234: { 278 },
1.24 ! kristaps 235: { 833 },
1.22 kristaps 236: { 556 },
1.24 ! kristaps 237: { 500 },
1.22 kristaps 238: { 556 },
239: { 556 },
240: { 444 },
1.24 ! kristaps 241: { 389 },
! 242: { 333 },
1.22 kristaps 243: { 556 },
244: { 500 },
1.24 ! kristaps 245: { 722 },
! 246: { 500 },
1.22 kristaps 247: { 500 },
1.24 ! kristaps 248: { 444 },
! 249: { 394 },
! 250: { 220 },
! 251: { 394 },
! 252: { 520 },
1.13 kristaps 253: } },
1.24 ! kristaps 254: { "Times-Italic", {
! 255: { 250 },
! 256: { 333 },
! 257: { 420 },
! 258: { 500 },
! 259: { 500 },
! 260: { 833 },
! 261: { 778 },
! 262: { 333 },
! 263: { 333 },
! 264: { 333 },
! 265: { 500 },
! 266: { 675 },
! 267: { 250 },
! 268: { 333 },
! 269: { 250 },
! 270: { 278 },
! 271: { 500 },
! 272: { 500 },
! 273: { 500 },
! 274: { 500 },
! 275: { 500 },
! 276: { 500 },
! 277: { 500 },
! 278: { 500 },
! 279: { 500 },
! 280: { 500 },
! 281: { 333 },
! 282: { 333 },
! 283: { 675 },
! 284: { 675 },
! 285: { 675 },
! 286: { 500 },
! 287: { 920 },
! 288: { 611 },
! 289: { 611 },
! 290: { 667 },
! 291: { 722 },
! 292: { 611 },
! 293: { 611 },
! 294: { 722 },
! 295: { 722 },
! 296: { 333 },
! 297: { 444 },
! 298: { 667 },
! 299: { 556 },
! 300: { 833 },
! 301: { 667 },
! 302: { 722 },
! 303: { 611 },
! 304: { 722 },
! 305: { 611 },
! 306: { 500 },
! 307: { 556 },
! 308: { 722 },
! 309: { 611 },
! 310: { 833 },
! 311: { 611 },
! 312: { 556 },
! 313: { 556 },
! 314: { 389 },
! 315: { 278 },
! 316: { 389 },
! 317: { 422 },
! 318: { 500 },
! 319: { 333 },
! 320: { 500 },
! 321: { 500 },
! 322: { 444 },
1.22 kristaps 323: { 500 },
1.24 ! kristaps 324: { 444 },
! 325: { 278 },
1.22 kristaps 326: { 500 },
327: { 500 },
328: { 278 },
1.24 ! kristaps 329: { 278 },
! 330: { 444 },
! 331: { 278 },
! 332: { 722 },
! 333: { 500 },
! 334: { 500 },
! 335: { 500 },
1.22 kristaps 336: { 500 },
1.24 ! kristaps 337: { 389 },
! 338: { 389 },
1.22 kristaps 339: { 278 },
340: { 500 },
1.24 ! kristaps 341: { 444 },
! 342: { 667 },
! 343: { 444 },
! 344: { 444 },
! 345: { 389 },
! 346: { 400 },
1.22 kristaps 347: { 275 },
1.24 ! kristaps 348: { 400 },
! 349: { 541 },
1.13 kristaps 350: } },
351: };
352:
1.15 kristaps 353: /* These work the buffer used by the header and footer. */
1.4 kristaps 354: #define PS_BUFSLOP 128
355: #define PS_GROWBUF(p, sz) \
356: do if ((p)->engine.ps.psmargcur + (sz) > \
357: (p)->engine.ps.psmargsz) { \
358: (p)->engine.ps.psmargsz += /* CONSTCOND */ \
359: MAX(PS_BUFSLOP, (sz)); \
360: (p)->engine.ps.psmarg = realloc \
361: ((p)->engine.ps.psmarg, \
362: (p)->engine.ps.psmargsz); \
363: if (NULL == (p)->engine.ps.psmarg) { \
364: perror(NULL); \
365: exit(EXIT_FAILURE); \
366: } \
367: } while (/* CONSTCOND */ 0)
368:
1.9 kristaps 369:
1.20 kristaps 370: static double ps_hspan(const struct termp *,
1.19 kristaps 371: const struct roffsu *);
372: static size_t ps_width(const struct termp *, char);
373: static void ps_advance(struct termp *, size_t);
1.2 kristaps 374: static void ps_begin(struct termp *);
375: static void ps_end(struct termp *);
376: static void ps_endline(struct termp *);
1.9 kristaps 377: static void ps_fclose(struct termp *);
1.19 kristaps 378: static void ps_letter(struct termp *, char);
1.9 kristaps 379: static void ps_pclose(struct termp *);
1.13 kristaps 380: static void ps_pletter(struct termp *, int);
1.4 kristaps 381: static void ps_printf(struct termp *, const char *, ...);
382: static void ps_putchar(struct termp *, char);
1.9 kristaps 383: static void ps_setfont(struct termp *, enum termfont);
1.2 kristaps 384:
385:
1.1 kristaps 386: void *
1.17 kristaps 387: ps_alloc(char *outopts)
1.1 kristaps 388: {
389: struct termp *p;
1.18 kristaps 390: size_t pagex, pagey, margin, lineheight;
1.17 kristaps 391: const char *toks[2];
1.18 kristaps 392: const char *paper;
1.17 kristaps 393: char *v;
1.1 kristaps 394:
395: if (NULL == (p = term_alloc(TERMENC_ASCII)))
396: return(NULL);
397:
1.19 kristaps 398: p->advance = ps_advance;
1.2 kristaps 399: p->begin = ps_begin;
400: p->end = ps_end;
401: p->endline = ps_endline;
1.19 kristaps 402: p->hspan = ps_hspan;
403: p->letter = ps_letter;
404: p->type = TERMTYPE_PS;
1.11 kristaps 405: p->width = ps_width;
1.21 kristaps 406:
407: p->engine.ps.scale = 10;
1.17 kristaps 408:
409: toks[0] = "paper";
410: toks[1] = NULL;
411:
1.19 kristaps 412: paper = "letter";
413:
1.17 kristaps 414: while (outopts && *outopts)
415: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
416: case (0):
1.18 kristaps 417: paper = v;
1.17 kristaps 418: break;
419: default:
420: break;
421: }
1.16 kristaps 422:
1.21 kristaps 423: margin = PNT2AFM(p, 72);
424: lineheight = PNT2AFM(p, 12);
425:
1.18 kristaps 426: if (0 == strcasecmp(paper, "a4")) {
1.21 kristaps 427: pagex = PNT2AFM(p, 595);
428: pagey = PNT2AFM(p, 842);
1.18 kristaps 429: } else {
1.21 kristaps 430: pagex = PNT2AFM(p, 612);
431: pagey = PNT2AFM(p, 792);
1.18 kristaps 432: }
433:
1.16 kristaps 434: assert(margin * 2 < pagex);
435: assert(margin * 2 < pagey);
436:
437: p->engine.ps.width = pagex;
438: p->engine.ps.height = pagey;
439: p->engine.ps.header = pagey - (margin / 2);
440: p->engine.ps.top = pagey - margin;
441: p->engine.ps.footer = (margin / 2);
442: p->engine.ps.bottom = margin;
443: p->engine.ps.left = margin;
1.18 kristaps 444: p->engine.ps.lineheight = lineheight;
1.16 kristaps 445:
446: p->defrmargin = pagex - (margin * 2);
1.1 kristaps 447: return(p);
448: }
449:
450:
451: void
452: ps_free(void *arg)
453: {
1.4 kristaps 454: struct termp *p;
455:
456: p = (struct termp *)arg;
457:
458: if (p->engine.ps.psmarg)
459: free(p->engine.ps.psmarg);
460:
461: term_free(p);
462: }
463:
464:
465: static void
466: ps_printf(struct termp *p, const char *fmt, ...)
467: {
468: va_list ap;
469: int pos;
470:
471: va_start(ap, fmt);
472:
473: /*
474: * If we're running in regular mode, then pipe directly into
475: * vprintf(). If we're processing margins, then push the data
476: * into our growable margin buffer.
477: */
1.1 kristaps 478:
1.4 kristaps 479: if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
480: vprintf(fmt, ap);
481: va_end(ap);
482: return;
483: }
484:
485: /*
486: * XXX: I assume that the in-margin print won't exceed
487: * PS_BUFSLOP (128 bytes), which is reasonable but still an
488: * assumption that will cause pukeage if it's not the case.
489: */
490:
491: PS_GROWBUF(p, PS_BUFSLOP);
492:
493: pos = (int)p->engine.ps.psmargcur;
494: vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap);
495: p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg);
1.5 kristaps 496:
497: va_end(ap);
1.4 kristaps 498: }
499:
500:
501: static void
502: ps_putchar(struct termp *p, char c)
503: {
504: int pos;
505:
506: /* See ps_printf(). */
507:
508: if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
509: putchar(c);
510: return;
511: }
512:
513: PS_GROWBUF(p, 2);
514:
515: pos = (int)p->engine.ps.psmargcur++;
1.5 kristaps 516: p->engine.ps.psmarg[pos++] = c;
1.4 kristaps 517: p->engine.ps.psmarg[pos] = '\0';
1.2 kristaps 518: }
519:
520:
1.3 kristaps 521: /* ARGSUSED */
1.2 kristaps 522: static void
523: ps_end(struct termp *p)
524: {
525:
1.4 kristaps 526: /*
527: * At the end of the file, do one last showpage. This is the
528: * same behaviour as groff(1) and works for multiple pages as
529: * well as just one.
530: */
531:
1.8 kristaps 532: assert(0 == p->engine.ps.psstate);
533: assert('\0' == p->engine.ps.last);
1.4 kristaps 534: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
535: printf("%s", p->engine.ps.psmarg);
1.16 kristaps 536: p->engine.ps.pages++;
1.4 kristaps 537: printf("showpage\n");
1.16 kristaps 538:
539: printf("%%%%Trailer\n");
540: printf("%%%%Pages: %zu\n", p->engine.ps.pages);
541: printf("%%%%EOF\n");
1.2 kristaps 542: }
543:
544:
545: static void
546: ps_begin(struct termp *p)
547: {
1.13 kristaps 548: time_t t;
1.16 kristaps 549: int i;
1.2 kristaps 550:
1.9 kristaps 551: /*
552: * Print margins into margin buffer. Nothing gets output to the
553: * screen yet, so we don't need to initialise the primary state.
1.2 kristaps 554: */
555:
1.4 kristaps 556: if (p->engine.ps.psmarg) {
557: assert(p->engine.ps.psmargsz);
558: p->engine.ps.psmarg[0] = '\0';
559: }
560:
561: p->engine.ps.psmargcur = 0;
1.9 kristaps 562: p->engine.ps.psstate = PS_MARGINS;
1.16 kristaps 563: p->engine.ps.pscol = p->engine.ps.left;
564: p->engine.ps.psrow = p->engine.ps.header;
1.4 kristaps 565:
1.9 kristaps 566: ps_setfont(p, TERMFONT_NONE);
1.4 kristaps 567:
568: (*p->headf)(p, p->argf);
569: (*p->endline)(p);
570:
1.16 kristaps 571: p->engine.ps.pscol = p->engine.ps.left;
572: p->engine.ps.psrow = p->engine.ps.footer;
1.4 kristaps 573:
574: (*p->footf)(p, p->argf);
575: (*p->endline)(p);
576:
577: p->engine.ps.psstate &= ~PS_MARGINS;
1.9 kristaps 578:
1.4 kristaps 579: assert(0 == p->engine.ps.psstate);
1.9 kristaps 580: assert(p->engine.ps.psmarg);
581: assert('\0' != p->engine.ps.psmarg[0]);
582:
583: /*
584: * Print header and initialise page state. Following this,
585: * stuff gets printed to the screen, so make sure we're sane.
586: */
1.4 kristaps 587:
1.13 kristaps 588: t = time(NULL);
589:
1.16 kristaps 590: printf("%%!PS-Adobe-3.0\n");
1.13 kristaps 591: printf("%%%%Creator: mandoc-%s\n", VERSION);
592: printf("%%%%CreationDate: %s", ctime(&t));
1.16 kristaps 593: printf("%%%%DocumentData: Clean7Bit\n");
594: printf("%%%%Orientation: Portrait\n");
595: printf("%%%%Pages: (atend)\n");
1.13 kristaps 596: printf("%%%%PageOrder: Ascend\n");
1.16 kristaps 597: printf("%%%%DocumentMedia: Default %zu %zu 0 () ()\n",
1.23 kristaps 598: AFM2PNT(p, p->engine.ps.width),
599: AFM2PNT(p, p->engine.ps.height));
1.16 kristaps 600: printf("%%%%DocumentNeededResources: font");
601: for (i = 0; i < (int)TERMFONT__MAX; i++)
602: printf(" %s", fonts[i].name);
603: printf("\n%%%%EndComments\n");
604:
605: printf("%%%%Page: %zu %zu\n",
606: p->engine.ps.pages + 1,
607: p->engine.ps.pages + 1);
1.13 kristaps 608:
1.9 kristaps 609: ps_setfont(p, TERMFONT_NONE);
1.16 kristaps 610: p->engine.ps.pscol = p->engine.ps.left;
611: p->engine.ps.psrow = p->engine.ps.top;
1.2 kristaps 612: }
613:
614:
615: static void
1.13 kristaps 616: ps_pletter(struct termp *p, int c)
1.2 kristaps 617: {
1.14 kristaps 618: int f;
1.2 kristaps 619:
1.9 kristaps 620: /*
621: * If we're not in a PostScript "word" context, then open one
622: * now at the current cursor.
623: */
624:
1.2 kristaps 625: if ( ! (PS_INLINE & p->engine.ps.psstate)) {
1.4 kristaps 626: ps_printf(p, "%zu %zu moveto\n(",
1.21 kristaps 627: AFM2PNT(p, p->engine.ps.pscol),
628: AFM2PNT(p, p->engine.ps.psrow));
1.2 kristaps 629: p->engine.ps.psstate |= PS_INLINE;
630: }
631:
632: /*
633: * We need to escape these characters as per the PostScript
634: * specification. We would also escape non-graphable characters
635: * (like tabs), but none of them would get to this point and
636: * it's superfluous to abort() on them.
637: */
638:
639: switch (c) {
640: case ('('):
641: /* FALLTHROUGH */
642: case (')'):
643: /* FALLTHROUGH */
644: case ('\\'):
1.4 kristaps 645: ps_putchar(p, '\\');
1.2 kristaps 646: break;
647: default:
648: break;
649: }
650:
651: /* Write the character and adjust where we are on the page. */
1.9 kristaps 652:
1.14 kristaps 653: f = (int)p->engine.ps.lastf;
1.13 kristaps 654:
1.14 kristaps 655: if (c <= 32 || (c - 32 > MAXCHAR)) {
1.13 kristaps 656: ps_putchar(p, ' ');
1.18 kristaps 657: p->engine.ps.pscol += fonts[f].gly[0].wx;
1.13 kristaps 658: return;
659: }
660:
1.4 kristaps 661: ps_putchar(p, c);
1.14 kristaps 662: c -= 32;
1.18 kristaps 663: p->engine.ps.pscol += fonts[f].gly[c].wx;
1.2 kristaps 664: }
665:
666:
667: static void
1.9 kristaps 668: ps_pclose(struct termp *p)
669: {
670:
671: /*
672: * Spit out that we're exiting a word context (this is a
673: * "partial close" because we don't check the last-char buffer
674: * or anything).
675: */
676:
677: if ( ! (PS_INLINE & p->engine.ps.psstate))
678: return;
679:
680: ps_printf(p, ") show\n");
681: p->engine.ps.psstate &= ~PS_INLINE;
682: }
683:
684:
685: static void
686: ps_fclose(struct termp *p)
687: {
688:
689: /*
690: * Strong closure: if we have a last-char, spit it out after
691: * checking that we're in the right font mode. This will of
692: * course open a new scope, if applicable.
693: *
694: * Following this, close out any scope that's open.
695: */
696:
697: if ('\0' != p->engine.ps.last) {
698: if (p->engine.ps.lastf != TERMFONT_NONE) {
699: ps_pclose(p);
700: ps_setfont(p, TERMFONT_NONE);
701: }
702: ps_pletter(p, p->engine.ps.last);
703: p->engine.ps.last = '\0';
704: }
705:
706: if ( ! (PS_INLINE & p->engine.ps.psstate))
707: return;
708:
709: ps_pclose(p);
710: }
711:
712:
713: static void
1.8 kristaps 714: ps_letter(struct termp *p, char c)
715: {
716: char cc;
1.9 kristaps 717:
718: /*
719: * State machine dictates whether to buffer the last character
720: * or not. Basically, encoded words are detected by checking if
721: * we're an "8" and switching on the buffer. Then we put "8" in
722: * our buffer, and on the next charater, flush both character
723: * and buffer. Thus, "regular" words are detected by having a
724: * regular character and a regular buffer character.
725: */
726:
1.8 kristaps 727: if ('\0' == p->engine.ps.last) {
728: assert(8 != c);
729: p->engine.ps.last = c;
730: return;
731: } else if (8 == p->engine.ps.last) {
732: assert(8 != c);
1.9 kristaps 733: p->engine.ps.last = '\0';
1.8 kristaps 734: } else if (8 == c) {
735: assert(8 != p->engine.ps.last);
1.9 kristaps 736: if ('_' == p->engine.ps.last) {
737: if (p->engine.ps.lastf != TERMFONT_UNDER) {
738: ps_pclose(p);
739: ps_setfont(p, TERMFONT_UNDER);
740: }
741: } else if (p->engine.ps.lastf != TERMFONT_BOLD) {
742: ps_pclose(p);
743: ps_setfont(p, TERMFONT_BOLD);
744: }
1.8 kristaps 745: p->engine.ps.last = c;
746: return;
747: } else {
1.9 kristaps 748: if (p->engine.ps.lastf != TERMFONT_NONE) {
749: ps_pclose(p);
750: ps_setfont(p, TERMFONT_NONE);
751: }
1.8 kristaps 752: cc = p->engine.ps.last;
753: p->engine.ps.last = c;
754: c = cc;
755: }
756:
1.9 kristaps 757: ps_pletter(p, c);
1.8 kristaps 758: }
759:
760:
761: static void
1.2 kristaps 762: ps_advance(struct termp *p, size_t len)
763: {
764:
1.9 kristaps 765: /*
766: * Advance some spaces. This can probably be made smarter,
767: * i.e., to have multiple space-separated words in the same
768: * scope, but this is easier: just close out the current scope
769: * and readjust our column settings.
770: */
1.8 kristaps 771:
1.9 kristaps 772: ps_fclose(p);
1.14 kristaps 773: p->engine.ps.pscol += len;
1.2 kristaps 774: }
775:
776:
777: static void
778: ps_endline(struct termp *p)
779: {
1.8 kristaps 780:
1.9 kristaps 781: /* Close out any scopes we have open: we're at eoln. */
782:
783: ps_fclose(p);
1.2 kristaps 784:
1.9 kristaps 785: /*
786: * If we're in the margin, don't try to recalculate our current
787: * row. XXX: if the column tries to be fancy with multiple
788: * lines, we'll do nasty stuff.
789: */
1.2 kristaps 790:
791: if (PS_MARGINS & p->engine.ps.psstate)
792: return;
793:
1.9 kristaps 794: /*
795: * Put us down a line. If we're at the page bottom, spit out a
796: * showpage and restart our row.
797: */
798:
1.16 kristaps 799: p->engine.ps.pscol = p->engine.ps.left;
800: if (p->engine.ps.psrow >= p->engine.ps.lineheight +
801: p->engine.ps.bottom) {
802: p->engine.ps.psrow -= p->engine.ps.lineheight;
1.2 kristaps 803: return;
804: }
805:
1.4 kristaps 806: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
807: printf("%s", p->engine.ps.psmarg);
1.23 kristaps 808: printf("showpage\n");
809: p->engine.ps.pages++;
1.16 kristaps 810: printf("%%%%Page: %zu %zu\n",
811: p->engine.ps.pages + 1,
812: p->engine.ps.pages + 1);
813: p->engine.ps.psrow = p->engine.ps.top;
1.1 kristaps 814: }
1.9 kristaps 815:
816:
817: static void
818: ps_setfont(struct termp *p, enum termfont f)
819: {
820:
1.16 kristaps 821: assert(f < TERMFONT__MAX);
1.21 kristaps 822: ps_printf(p, "/%s %zu selectfont\n",
823: fonts[(int)f].name, p->engine.ps.scale);
1.9 kristaps 824: p->engine.ps.lastf = f;
825: }
826:
1.11 kristaps 827:
1.12 kristaps 828: /* ARGSUSED */
1.11 kristaps 829: static size_t
830: ps_width(const struct termp *p, char c)
831: {
832:
1.14 kristaps 833: if (c <= 32 || c - 32 >= MAXCHAR)
1.18 kristaps 834: return(fonts[(int)TERMFONT_NONE].gly[0].wx);
1.14 kristaps 835:
836: c -= 32;
1.18 kristaps 837: return(fonts[(int)TERMFONT_NONE].gly[(int)c].wx);
1.11 kristaps 838: }
1.19 kristaps 839:
840:
1.20 kristaps 841: static double
1.19 kristaps 842: ps_hspan(const struct termp *p, const struct roffsu *su)
843: {
844: double r;
845:
846: /*
847: * All of these measurements are derived by converting from the
1.21 kristaps 848: * native measurement to AFM units.
1.19 kristaps 849: */
850:
851: switch (su->unit) {
852: case (SCALE_CM):
1.21 kristaps 853: r = PNT2AFM(p, su->scale * 28.34);
1.19 kristaps 854: break;
855: case (SCALE_IN):
1.21 kristaps 856: r = PNT2AFM(p, su->scale * 72);
1.19 kristaps 857: break;
858: case (SCALE_PC):
1.21 kristaps 859: r = PNT2AFM(p, su->scale * 12);
1.19 kristaps 860: break;
861: case (SCALE_PT):
1.21 kristaps 862: r = PNT2AFM(p, su->scale * 100);
1.19 kristaps 863: break;
864: case (SCALE_EM):
865: r = su->scale *
866: fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
867: break;
868: case (SCALE_MM):
1.21 kristaps 869: r = PNT2AFM(p, su->scale * 2.834);
1.19 kristaps 870: break;
871: case (SCALE_EN):
872: r = su->scale *
873: fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
874: break;
875: case (SCALE_VS):
876: r = su->scale * p->engine.ps.lineheight;
877: break;
878: default:
879: r = su->scale;
880: break;
881: }
882:
1.20 kristaps 883: return(r);
1.19 kristaps 884: }
885: