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1.6 ! schwarze 1: /* $Id: term_ps.c,v 1.5 2010/06/29 15:49:52 schwarze Exp $ */
1.1 schwarze 2: /*
1.6 ! schwarze 3: * Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 schwarze 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/param.h>
22:
23: #include <assert.h>
24: #include <stdarg.h>
1.5 schwarze 25: #include <stdint.h>
1.1 schwarze 26: #include <stdio.h>
27: #include <stdlib.h>
28: #include <string.h>
1.4 schwarze 29: #include <time.h>
1.6 ! schwarze 30: #include <unistd.h>
1.1 schwarze 31:
32: #include "out.h"
33: #include "main.h"
34: #include "term.h"
35:
1.6 ! schwarze 36: /* Convert PostScript point "x" to an AFM unit. */
! 37: #define PNT2AFM(p, x) /* LINTED */ \
! 38: (size_t)((double)(x) * (1000.0 / (double)(p)->engine.ps.scale))
! 39:
! 40: /* Convert an AFM unit "x" to a PostScript points */
! 41: #define AFM2PNT(p, x) /* LINTED */ \
! 42: (size_t)((double)(x) / (1000.0 / (double)(p)->engine.ps.scale))
! 43:
1.4 schwarze 44: struct glyph {
1.6 ! schwarze 45: size_t wx; /* WX in AFM */
1.4 schwarze 46: };
47:
48: struct font {
49: const char *name; /* FontName in AFM */
50: #define MAXCHAR 95 /* total characters we can handle */
51: struct glyph gly[MAXCHAR]; /* glyph metrics */
52: };
1.1 schwarze 53:
1.4 schwarze 54: /*
55: * We define, for the time being, three fonts: bold, oblique/italic, and
56: * normal (roman). The following table hard-codes the font metrics for
57: * ASCII, i.e., 32--127.
58: */
59:
60: static const struct font fonts[TERMFONT__MAX] = {
1.6 ! schwarze 61: { "Times-Roman", {
! 62: { 250 },
! 63: { 333 },
! 64: { 408 },
! 65: { 500 },
! 66: { 500 },
! 67: { 833 },
! 68: { 778 },
! 69: { 333 },
! 70: { 333 },
! 71: { 333 },
! 72: { 500 },
! 73: { 564 },
! 74: { 250 },
! 75: { 333 },
! 76: { 250 },
! 77: { 278 },
! 78: { 500 },
! 79: { 500 },
! 80: { 500 },
! 81: { 500 },
! 82: { 500 },
! 83: { 500 },
! 84: { 500 },
! 85: { 500 },
! 86: { 500 },
! 87: { 500 },
! 88: { 278 },
! 89: { 278 },
! 90: { 564 },
! 91: { 564 },
! 92: { 564 },
! 93: { 444 },
! 94: { 921 },
! 95: { 722 },
! 96: { 667 },
! 97: { 667 },
! 98: { 722 },
! 99: { 611 },
! 100: { 556 },
! 101: { 722 },
! 102: { 722 },
! 103: { 333 },
! 104: { 389 },
! 105: { 722 },
! 106: { 611 },
! 107: { 889 },
! 108: { 722 },
! 109: { 722 },
! 110: { 556 },
! 111: { 722 },
! 112: { 667 },
! 113: { 556 },
! 114: { 611 },
! 115: { 722 },
! 116: { 722 },
! 117: { 944 },
! 118: { 722 },
! 119: { 722 },
! 120: { 611 },
! 121: { 333 },
! 122: { 278 },
! 123: { 333 },
! 124: { 469 },
! 125: { 500 },
! 126: { 333 },
! 127: { 444 },
! 128: { 500 },
! 129: { 444 },
! 130: { 500},
! 131: { 444},
! 132: { 333},
! 133: { 500},
! 134: { 500},
! 135: { 278},
! 136: { 278},
! 137: { 500},
! 138: { 278},
! 139: { 778},
! 140: { 500},
! 141: { 500},
! 142: { 500},
! 143: { 500},
! 144: { 333},
! 145: { 389},
! 146: { 278},
! 147: { 500},
! 148: { 500},
! 149: { 722},
! 150: { 500},
! 151: { 500},
! 152: { 444},
! 153: { 480},
! 154: { 200},
! 155: { 480},
! 156: { 541},
1.4 schwarze 157: } },
1.6 ! schwarze 158: { "Times-Bold", {
! 159: { 250 },
! 160: { 333 },
! 161: { 555 },
! 162: { 500 },
! 163: { 500 },
! 164: { 1000 },
! 165: { 833 },
! 166: { 333 },
! 167: { 333 },
! 168: { 333 },
! 169: { 500 },
! 170: { 570 },
! 171: { 250 },
! 172: { 333 },
! 173: { 250 },
! 174: { 278 },
! 175: { 500 },
! 176: { 500 },
! 177: { 500 },
! 178: { 500 },
! 179: { 500 },
! 180: { 500 },
! 181: { 500 },
! 182: { 500 },
! 183: { 500 },
! 184: { 500 },
! 185: { 333 },
! 186: { 333 },
! 187: { 570 },
! 188: { 570 },
! 189: { 570 },
! 190: { 500 },
! 191: { 930 },
! 192: { 722 },
! 193: { 667 },
! 194: { 722 },
! 195: { 722 },
! 196: { 667 },
! 197: { 611 },
! 198: { 778 },
! 199: { 778 },
! 200: { 389 },
! 201: { 500 },
! 202: { 778 },
! 203: { 667 },
! 204: { 944 },
! 205: { 722 },
! 206: { 778 },
! 207: { 611 },
! 208: { 778 },
! 209: { 722 },
! 210: { 556 },
! 211: { 667 },
! 212: { 722 },
! 213: { 722 },
! 214: { 1000 },
! 215: { 722 },
! 216: { 722 },
! 217: { 667 },
! 218: { 333 },
! 219: { 278 },
! 220: { 333 },
! 221: { 581 },
! 222: { 500 },
! 223: { 333 },
! 224: { 500 },
! 225: { 556 },
! 226: { 444 },
! 227: { 556 },
! 228: { 444 },
! 229: { 333 },
! 230: { 500 },
! 231: { 556 },
! 232: { 278 },
! 233: { 333 },
! 234: { 556 },
! 235: { 278 },
! 236: { 833 },
! 237: { 556 },
! 238: { 500 },
! 239: { 556 },
! 240: { 556 },
! 241: { 444 },
! 242: { 389 },
! 243: { 333 },
! 244: { 556 },
! 245: { 500 },
! 246: { 722 },
! 247: { 500 },
! 248: { 500 },
! 249: { 444 },
! 250: { 394 },
! 251: { 220 },
! 252: { 394 },
! 253: { 520 },
1.4 schwarze 254: } },
1.6 ! schwarze 255: { "Times-Italic", {
! 256: { 250 },
! 257: { 333 },
! 258: { 420 },
! 259: { 500 },
! 260: { 500 },
! 261: { 833 },
! 262: { 778 },
! 263: { 333 },
! 264: { 333 },
! 265: { 333 },
! 266: { 500 },
! 267: { 675 },
! 268: { 250 },
! 269: { 333 },
! 270: { 250 },
! 271: { 278 },
! 272: { 500 },
! 273: { 500 },
! 274: { 500 },
! 275: { 500 },
! 276: { 500 },
! 277: { 500 },
! 278: { 500 },
! 279: { 500 },
! 280: { 500 },
! 281: { 500 },
! 282: { 333 },
! 283: { 333 },
! 284: { 675 },
! 285: { 675 },
! 286: { 675 },
! 287: { 500 },
! 288: { 920 },
! 289: { 611 },
! 290: { 611 },
! 291: { 667 },
! 292: { 722 },
! 293: { 611 },
! 294: { 611 },
! 295: { 722 },
! 296: { 722 },
! 297: { 333 },
! 298: { 444 },
! 299: { 667 },
! 300: { 556 },
! 301: { 833 },
! 302: { 667 },
! 303: { 722 },
! 304: { 611 },
! 305: { 722 },
! 306: { 611 },
! 307: { 500 },
! 308: { 556 },
! 309: { 722 },
! 310: { 611 },
! 311: { 833 },
! 312: { 611 },
! 313: { 556 },
! 314: { 556 },
! 315: { 389 },
! 316: { 278 },
! 317: { 389 },
! 318: { 422 },
! 319: { 500 },
! 320: { 333 },
! 321: { 500 },
! 322: { 500 },
! 323: { 444 },
! 324: { 500 },
! 325: { 444 },
! 326: { 278 },
! 327: { 500 },
! 328: { 500 },
! 329: { 278 },
! 330: { 278 },
! 331: { 444 },
! 332: { 278 },
! 333: { 722 },
! 334: { 500 },
! 335: { 500 },
! 336: { 500 },
! 337: { 500 },
! 338: { 389 },
! 339: { 389 },
! 340: { 278 },
! 341: { 500 },
! 342: { 444 },
! 343: { 667 },
! 344: { 444 },
! 345: { 444 },
! 346: { 389 },
! 347: { 400 },
! 348: { 275 },
! 349: { 400 },
! 350: { 541 },
1.4 schwarze 351: } },
352: };
353:
354: /* These work the buffer used by the header and footer. */
1.1 schwarze 355: #define PS_BUFSLOP 128
356: #define PS_GROWBUF(p, sz) \
357: do if ((p)->engine.ps.psmargcur + (sz) > \
358: (p)->engine.ps.psmargsz) { \
359: (p)->engine.ps.psmargsz += /* CONSTCOND */ \
360: MAX(PS_BUFSLOP, (sz)); \
361: (p)->engine.ps.psmarg = realloc \
362: ((p)->engine.ps.psmarg, \
363: (p)->engine.ps.psmargsz); \
364: if (NULL == (p)->engine.ps.psmarg) { \
365: perror(NULL); \
366: exit(EXIT_FAILURE); \
367: } \
368: } while (/* CONSTCOND */ 0)
369:
1.2 schwarze 370:
1.6 ! schwarze 371: static double ps_hspan(const struct termp *,
! 372: const struct roffsu *);
! 373: static size_t ps_width(const struct termp *, char);
! 374: static void ps_advance(struct termp *, size_t);
1.1 schwarze 375: static void ps_begin(struct termp *);
376: static void ps_end(struct termp *);
377: static void ps_endline(struct termp *);
1.2 schwarze 378: static void ps_fclose(struct termp *);
1.6 ! schwarze 379: static void ps_letter(struct termp *, char);
1.2 schwarze 380: static void ps_pclose(struct termp *);
1.4 schwarze 381: static void ps_pletter(struct termp *, int);
1.1 schwarze 382: static void ps_printf(struct termp *, const char *, ...);
383: static void ps_putchar(struct termp *, char);
1.2 schwarze 384: static void ps_setfont(struct termp *, enum termfont);
1.1 schwarze 385:
386:
387: void *
1.5 schwarze 388: ps_alloc(char *outopts)
1.1 schwarze 389: {
390: struct termp *p;
1.6 ! schwarze 391: size_t pagex, pagey, marginx, marginy, lineheight;
1.5 schwarze 392: const char *toks[2];
1.6 ! schwarze 393: const char *pp;
1.5 schwarze 394: char *v;
1.1 schwarze 395:
396: if (NULL == (p = term_alloc(TERMENC_ASCII)))
397: return(NULL);
398:
1.6 ! schwarze 399: p->advance = ps_advance;
1.1 schwarze 400: p->begin = ps_begin;
401: p->end = ps_end;
402: p->endline = ps_endline;
1.6 ! schwarze 403: p->hspan = ps_hspan;
! 404: p->letter = ps_letter;
! 405: p->type = TERMTYPE_PS;
1.3 schwarze 406: p->width = ps_width;
1.6 ! schwarze 407:
1.5 schwarze 408: toks[0] = "paper";
409: toks[1] = NULL;
410:
1.6 ! schwarze 411: pp = NULL;
! 412:
1.5 schwarze 413: while (outopts && *outopts)
414: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
415: case (0):
1.6 ! schwarze 416: pp = v;
1.5 schwarze 417: break;
418: default:
419: break;
420: }
1.4 schwarze 421:
1.6 ! schwarze 422: /* Default to US letter (millimetres). */
! 423:
! 424: pagex = 216;
! 425: pagey = 279;
! 426:
! 427: /*
! 428: * The ISO-269 paper sizes can be calculated automatically, but
! 429: * it would require bringing in -lm for pow() and I'd rather not
! 430: * do that. So just do it the easy way for now. Since this
! 431: * only happens once, I'm not terribly concerned.
! 432: */
! 433:
! 434: if (pp && strcasecmp(pp, "letter")) {
! 435: if (0 == strcasecmp(pp, "a3")) {
! 436: pagex = 297;
! 437: pagey = 420;
! 438: } else if (0 == strcasecmp(pp, "a4")) {
! 439: pagex = 210;
! 440: pagey = 297;
! 441: } else if (0 == strcasecmp(pp, "a5")) {
! 442: pagex = 148;
! 443: pagey = 210;
! 444: } else if (0 == strcasecmp(pp, "legal")) {
! 445: pagex = 216;
! 446: pagey = 356;
! 447: } else if (2 != sscanf(pp, "%zux%zu", &pagex, &pagey))
! 448: fprintf(stderr, "%s: Unknown paper\n", pp);
! 449: } else if (NULL == pp)
! 450: pp = "letter";
! 451:
! 452: /*
! 453: * This MUST be defined before any PNT2AFM or AFM2PNT
! 454: * calculations occur.
! 455: */
! 456:
! 457: p->engine.ps.scale = 11;
! 458:
! 459: /* Remember millimetres -> AFM units. */
! 460:
! 461: pagex = PNT2AFM(p, ((double)pagex * 2.834));
! 462: pagey = PNT2AFM(p, ((double)pagey * 2.834));
! 463:
! 464: /* Margins are 1/9 the page x and y. */
! 465:
! 466: marginx = /* LINTED */
! 467: (size_t)((double)pagex / 9.0);
! 468: marginy = /* LINTED */
! 469: (size_t)((double)pagey / 9.0);
! 470:
! 471: /* Line-height is 1.4em. */
! 472:
! 473: lineheight = PNT2AFM(p, ((double)p->engine.ps.scale * 1.4));
1.4 schwarze 474:
475: p->engine.ps.width = pagex;
476: p->engine.ps.height = pagey;
1.6 ! schwarze 477: p->engine.ps.header = pagey - (marginy / 2) - (lineheight / 2);
! 478: p->engine.ps.top = pagey - marginy;
! 479: p->engine.ps.footer = (marginy / 2) - (lineheight / 2);
! 480: p->engine.ps.bottom = marginy;
! 481: p->engine.ps.left = marginx;
! 482: p->engine.ps.lineheight = lineheight;
1.4 schwarze 483:
1.6 ! schwarze 484: p->defrmargin = pagex - (marginx * 2);
1.1 schwarze 485: return(p);
486: }
487:
488:
489: void
490: ps_free(void *arg)
491: {
492: struct termp *p;
493:
494: p = (struct termp *)arg;
495:
496: if (p->engine.ps.psmarg)
497: free(p->engine.ps.psmarg);
498:
499: term_free(p);
500: }
501:
502:
503: static void
504: ps_printf(struct termp *p, const char *fmt, ...)
505: {
506: va_list ap;
507: int pos;
508:
509: va_start(ap, fmt);
510:
511: /*
512: * If we're running in regular mode, then pipe directly into
513: * vprintf(). If we're processing margins, then push the data
514: * into our growable margin buffer.
515: */
516:
1.6 ! schwarze 517: if ( ! (PS_MARGINS & p->engine.ps.flags)) {
1.1 schwarze 518: vprintf(fmt, ap);
519: va_end(ap);
520: return;
521: }
522:
523: /*
524: * XXX: I assume that the in-margin print won't exceed
525: * PS_BUFSLOP (128 bytes), which is reasonable but still an
526: * assumption that will cause pukeage if it's not the case.
527: */
528:
529: PS_GROWBUF(p, PS_BUFSLOP);
530:
531: pos = (int)p->engine.ps.psmargcur;
532: vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap);
533: p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg);
534:
535: va_end(ap);
536: }
537:
538:
539: static void
540: ps_putchar(struct termp *p, char c)
541: {
542: int pos;
543:
544: /* See ps_printf(). */
545:
1.6 ! schwarze 546: if ( ! (PS_MARGINS & p->engine.ps.flags)) {
1.1 schwarze 547: putchar(c);
548: return;
549: }
550:
551: PS_GROWBUF(p, 2);
552:
553: pos = (int)p->engine.ps.psmargcur++;
554: p->engine.ps.psmarg[pos++] = c;
555: p->engine.ps.psmarg[pos] = '\0';
556: }
557:
558:
559: /* ARGSUSED */
560: static void
561: ps_end(struct termp *p)
562: {
563:
564: /*
565: * At the end of the file, do one last showpage. This is the
566: * same behaviour as groff(1) and works for multiple pages as
567: * well as just one.
568: */
569:
1.6 ! schwarze 570: if ( ! (PS_NEWPAGE & p->engine.ps.flags)) {
! 571: assert(0 == p->engine.ps.flags);
! 572: assert('\0' == p->engine.ps.last);
! 573: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
! 574: printf("%s", p->engine.ps.psmarg);
! 575: p->engine.ps.pages++;
! 576: printf("showpage\n");
! 577: }
1.4 schwarze 578:
579: printf("%%%%Trailer\n");
580: printf("%%%%Pages: %zu\n", p->engine.ps.pages);
581: printf("%%%%EOF\n");
1.1 schwarze 582: }
583:
584:
585: static void
586: ps_begin(struct termp *p)
587: {
1.4 schwarze 588: time_t t;
589: int i;
1.1 schwarze 590:
1.2 schwarze 591: /*
592: * Print margins into margin buffer. Nothing gets output to the
593: * screen yet, so we don't need to initialise the primary state.
1.1 schwarze 594: */
595:
596: if (p->engine.ps.psmarg) {
597: assert(p->engine.ps.psmargsz);
598: p->engine.ps.psmarg[0] = '\0';
599: }
600:
601: p->engine.ps.psmargcur = 0;
1.6 ! schwarze 602: p->engine.ps.flags = PS_MARGINS;
1.4 schwarze 603: p->engine.ps.pscol = p->engine.ps.left;
604: p->engine.ps.psrow = p->engine.ps.header;
1.1 schwarze 605:
1.2 schwarze 606: ps_setfont(p, TERMFONT_NONE);
1.1 schwarze 607:
608: (*p->headf)(p, p->argf);
609: (*p->endline)(p);
610:
1.4 schwarze 611: p->engine.ps.pscol = p->engine.ps.left;
612: p->engine.ps.psrow = p->engine.ps.footer;
1.1 schwarze 613:
614: (*p->footf)(p, p->argf);
615: (*p->endline)(p);
616:
1.6 ! schwarze 617: p->engine.ps.flags &= ~PS_MARGINS;
1.2 schwarze 618:
1.6 ! schwarze 619: assert(0 == p->engine.ps.flags);
1.2 schwarze 620: assert(p->engine.ps.psmarg);
621: assert('\0' != p->engine.ps.psmarg[0]);
1.1 schwarze 622:
1.2 schwarze 623: /*
624: * Print header and initialise page state. Following this,
625: * stuff gets printed to the screen, so make sure we're sane.
626: */
627:
1.4 schwarze 628: t = time(NULL);
629:
630: printf("%%!PS-Adobe-3.0\n");
631: printf("%%%%Creator: mandoc-%s\n", VERSION);
632: printf("%%%%CreationDate: %s", ctime(&t));
633: printf("%%%%DocumentData: Clean7Bit\n");
634: printf("%%%%Orientation: Portrait\n");
635: printf("%%%%Pages: (atend)\n");
636: printf("%%%%PageOrder: Ascend\n");
637: printf("%%%%DocumentMedia: Default %zu %zu 0 () ()\n",
1.6 ! schwarze 638: AFM2PNT(p, p->engine.ps.width),
! 639: AFM2PNT(p, p->engine.ps.height));
1.4 schwarze 640: printf("%%%%DocumentNeededResources: font");
641: for (i = 0; i < (int)TERMFONT__MAX; i++)
642: printf(" %s", fonts[i].name);
643: printf("\n%%%%EndComments\n");
644:
645: p->engine.ps.pscol = p->engine.ps.left;
646: p->engine.ps.psrow = p->engine.ps.top;
1.6 ! schwarze 647: p->engine.ps.flags |= PS_NEWPAGE;
! 648: ps_setfont(p, TERMFONT_NONE);
1.1 schwarze 649: }
650:
651:
652: static void
1.4 schwarze 653: ps_pletter(struct termp *p, int c)
1.1 schwarze 654: {
1.4 schwarze 655: int f;
1.6 ! schwarze 656:
! 657: /*
! 658: * If we haven't opened a page context, then output that we're
! 659: * in a new page and make sure the font is correctly set.
! 660: */
! 661:
! 662: if (PS_NEWPAGE & p->engine.ps.flags) {
! 663: printf("%%%%Page: %zu %zu\n",
! 664: p->engine.ps.pages + 1,
! 665: p->engine.ps.pages + 1);
! 666: ps_printf(p, "/%s %zu selectfont\n",
! 667: fonts[(int)p->engine.ps.lastf].name,
! 668: p->engine.ps.scale);
! 669: p->engine.ps.flags &= ~PS_NEWPAGE;
! 670: }
1.1 schwarze 671:
1.2 schwarze 672: /*
673: * If we're not in a PostScript "word" context, then open one
674: * now at the current cursor.
675: */
676:
1.6 ! schwarze 677: if ( ! (PS_INLINE & p->engine.ps.flags)) {
1.1 schwarze 678: ps_printf(p, "%zu %zu moveto\n(",
1.6 ! schwarze 679: AFM2PNT(p, p->engine.ps.pscol),
! 680: AFM2PNT(p, p->engine.ps.psrow));
! 681: p->engine.ps.flags |= PS_INLINE;
1.1 schwarze 682: }
683:
1.6 ! schwarze 684: assert( ! (PS_NEWPAGE & p->engine.ps.flags));
! 685:
1.1 schwarze 686: /*
687: * We need to escape these characters as per the PostScript
688: * specification. We would also escape non-graphable characters
689: * (like tabs), but none of them would get to this point and
690: * it's superfluous to abort() on them.
691: */
692:
693: switch (c) {
694: case ('('):
695: /* FALLTHROUGH */
696: case (')'):
697: /* FALLTHROUGH */
698: case ('\\'):
699: ps_putchar(p, '\\');
700: break;
701: default:
702: break;
703: }
704:
705: /* Write the character and adjust where we are on the page. */
1.2 schwarze 706:
1.4 schwarze 707: f = (int)p->engine.ps.lastf;
708:
709: if (c <= 32 || (c - 32 > MAXCHAR)) {
710: ps_putchar(p, ' ');
1.6 ! schwarze 711: p->engine.ps.pscol += fonts[f].gly[0].wx;
1.4 schwarze 712: return;
713: }
714:
1.6 ! schwarze 715: ps_putchar(p, (char)c);
1.4 schwarze 716: c -= 32;
1.6 ! schwarze 717: p->engine.ps.pscol += fonts[f].gly[c].wx;
1.1 schwarze 718: }
719:
720:
721: static void
1.2 schwarze 722: ps_pclose(struct termp *p)
723: {
724:
725: /*
726: * Spit out that we're exiting a word context (this is a
727: * "partial close" because we don't check the last-char buffer
728: * or anything).
729: */
730:
1.6 ! schwarze 731: if ( ! (PS_INLINE & p->engine.ps.flags))
1.2 schwarze 732: return;
733:
734: ps_printf(p, ") show\n");
1.6 ! schwarze 735: p->engine.ps.flags &= ~PS_INLINE;
1.2 schwarze 736: }
737:
738:
739: static void
740: ps_fclose(struct termp *p)
741: {
742:
743: /*
744: * Strong closure: if we have a last-char, spit it out after
745: * checking that we're in the right font mode. This will of
746: * course open a new scope, if applicable.
747: *
748: * Following this, close out any scope that's open.
749: */
750:
751: if ('\0' != p->engine.ps.last) {
752: if (p->engine.ps.lastf != TERMFONT_NONE) {
753: ps_pclose(p);
754: ps_setfont(p, TERMFONT_NONE);
755: }
756: ps_pletter(p, p->engine.ps.last);
757: p->engine.ps.last = '\0';
758: }
759:
1.6 ! schwarze 760: if ( ! (PS_INLINE & p->engine.ps.flags))
1.2 schwarze 761: return;
762:
763: ps_pclose(p);
764: }
765:
766:
767: static void
768: ps_letter(struct termp *p, char c)
769: {
770: char cc;
771:
772: /*
773: * State machine dictates whether to buffer the last character
774: * or not. Basically, encoded words are detected by checking if
775: * we're an "8" and switching on the buffer. Then we put "8" in
776: * our buffer, and on the next charater, flush both character
777: * and buffer. Thus, "regular" words are detected by having a
778: * regular character and a regular buffer character.
779: */
780:
781: if ('\0' == p->engine.ps.last) {
782: assert(8 != c);
783: p->engine.ps.last = c;
784: return;
785: } else if (8 == p->engine.ps.last) {
786: assert(8 != c);
787: p->engine.ps.last = '\0';
788: } else if (8 == c) {
789: assert(8 != p->engine.ps.last);
790: if ('_' == p->engine.ps.last) {
791: if (p->engine.ps.lastf != TERMFONT_UNDER) {
792: ps_pclose(p);
793: ps_setfont(p, TERMFONT_UNDER);
794: }
795: } else if (p->engine.ps.lastf != TERMFONT_BOLD) {
796: ps_pclose(p);
797: ps_setfont(p, TERMFONT_BOLD);
798: }
799: p->engine.ps.last = c;
800: return;
801: } else {
802: if (p->engine.ps.lastf != TERMFONT_NONE) {
803: ps_pclose(p);
804: ps_setfont(p, TERMFONT_NONE);
805: }
806: cc = p->engine.ps.last;
807: p->engine.ps.last = c;
808: c = cc;
809: }
810:
811: ps_pletter(p, c);
812: }
813:
814:
815: static void
1.1 schwarze 816: ps_advance(struct termp *p, size_t len)
817: {
818:
1.2 schwarze 819: /*
820: * Advance some spaces. This can probably be made smarter,
821: * i.e., to have multiple space-separated words in the same
822: * scope, but this is easier: just close out the current scope
823: * and readjust our column settings.
824: */
1.1 schwarze 825:
1.2 schwarze 826: ps_fclose(p);
1.4 schwarze 827: p->engine.ps.pscol += len;
1.1 schwarze 828: }
829:
830:
831: static void
832: ps_endline(struct termp *p)
833: {
834:
1.2 schwarze 835: /* Close out any scopes we have open: we're at eoln. */
836:
837: ps_fclose(p);
838:
839: /*
840: * If we're in the margin, don't try to recalculate our current
841: * row. XXX: if the column tries to be fancy with multiple
842: * lines, we'll do nasty stuff.
843: */
1.1 schwarze 844:
1.6 ! schwarze 845: if (PS_MARGINS & p->engine.ps.flags)
! 846: return;
! 847:
! 848: /* Left-justify. */
! 849:
! 850: p->engine.ps.pscol = p->engine.ps.left;
! 851:
! 852: /* If we haven't printed anything, return. */
! 853:
! 854: if (PS_NEWPAGE & p->engine.ps.flags)
1.1 schwarze 855: return;
856:
1.2 schwarze 857: /*
858: * Put us down a line. If we're at the page bottom, spit out a
859: * showpage and restart our row.
860: */
861:
1.4 schwarze 862: if (p->engine.ps.psrow >= p->engine.ps.lineheight +
863: p->engine.ps.bottom) {
864: p->engine.ps.psrow -= p->engine.ps.lineheight;
1.1 schwarze 865: return;
866: }
867:
868: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
869: printf("%s", p->engine.ps.psmarg);
870: printf("showpage\n");
1.4 schwarze 871: p->engine.ps.pages++;
872: p->engine.ps.psrow = p->engine.ps.top;
1.6 ! schwarze 873: assert( ! (PS_NEWPAGE & p->engine.ps.flags));
! 874: p->engine.ps.flags |= PS_NEWPAGE;
1.1 schwarze 875: }
1.2 schwarze 876:
877:
878: static void
879: ps_setfont(struct termp *p, enum termfont f)
880: {
881:
1.4 schwarze 882: assert(f < TERMFONT__MAX);
1.2 schwarze 883: p->engine.ps.lastf = f;
1.6 ! schwarze 884:
! 885: /*
! 886: * If we're still at the top of the page, let the font-setting
! 887: * be delayed until we actually have stuff to print.
! 888: */
! 889:
! 890: if (PS_NEWPAGE & p->engine.ps.flags)
! 891: return;
! 892:
! 893: ps_printf(p, "/%s %zu selectfont\n",
! 894: fonts[(int)f].name, p->engine.ps.scale);
1.2 schwarze 895: }
896:
1.3 schwarze 897:
1.4 schwarze 898: /* ARGSUSED */
1.3 schwarze 899: static size_t
900: ps_width(const struct termp *p, char c)
901: {
902:
1.4 schwarze 903: if (c <= 32 || c - 32 >= MAXCHAR)
1.6 ! schwarze 904: return(fonts[(int)TERMFONT_NONE].gly[0].wx);
1.4 schwarze 905:
906: c -= 32;
1.6 ! schwarze 907: return(fonts[(int)TERMFONT_NONE].gly[(int)c].wx);
! 908: }
! 909:
! 910:
! 911: static double
! 912: ps_hspan(const struct termp *p, const struct roffsu *su)
! 913: {
! 914: double r;
! 915:
! 916: /*
! 917: * All of these measurements are derived by converting from the
! 918: * native measurement to AFM units.
! 919: */
! 920:
! 921: switch (su->unit) {
! 922: case (SCALE_CM):
! 923: r = PNT2AFM(p, su->scale * 28.34);
! 924: break;
! 925: case (SCALE_IN):
! 926: r = PNT2AFM(p, su->scale * 72);
! 927: break;
! 928: case (SCALE_PC):
! 929: r = PNT2AFM(p, su->scale * 12);
! 930: break;
! 931: case (SCALE_PT):
! 932: r = PNT2AFM(p, su->scale * 100);
! 933: break;
! 934: case (SCALE_EM):
! 935: r = su->scale *
! 936: fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
! 937: break;
! 938: case (SCALE_MM):
! 939: r = PNT2AFM(p, su->scale * 2.834);
! 940: break;
! 941: case (SCALE_EN):
! 942: r = su->scale *
! 943: fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
! 944: break;
! 945: case (SCALE_VS):
! 946: r = su->scale * p->engine.ps.lineheight;
! 947: break;
! 948: default:
! 949: r = su->scale;
! 950: break;
! 951: }
! 952:
! 953: return(r);
1.3 schwarze 954: }
1.6 ! schwarze 955: