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1.27 ! kristaps 1: /* $Id: term_ps.c,v 1.26 2010/07/02 10:53:28 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>
1.26 kristaps 30: #include <unistd.h>
1.1 kristaps 31:
32: #include "out.h"
33: #include "main.h"
34: #include "term.h"
35:
1.27 ! kristaps 36: #define MINMARGIN_MM 20 /* Minimum 2cm margins. */
! 37: #define MINMARGIN_PNT 56.68
! 38: #define DEFPAGEX_MM 216 /* Default page size is US-letter. */
! 39: #define DEFPAGEY_MM 279
! 40:
1.21 kristaps 41: /* Convert PostScript point "x" to an AFM unit. */
1.25 kristaps 42: #define PNT2AFM(p, x) /* LINTED */ \
1.21 kristaps 43: (size_t)((double)(x) * (1000.0 / (double)(p)->engine.ps.scale))
44:
45: /* Convert an AFM unit "x" to a PostScript points */
1.25 kristaps 46: #define AFM2PNT(p, x) /* LINTED */ \
1.21 kristaps 47: (size_t)((double)(x) / (1000.0 / (double)(p)->engine.ps.scale))
48:
1.13 kristaps 49: struct glyph {
1.25 kristaps 50: size_t wx; /* WX in AFM */
1.13 kristaps 51: };
52:
53: struct font {
54: const char *name; /* FontName in AFM */
1.15 kristaps 55: #define MAXCHAR 95 /* total characters we can handle */
1.13 kristaps 56: struct glyph gly[MAXCHAR]; /* glyph metrics */
57: };
58:
59: /*
60: * We define, for the time being, three fonts: bold, oblique/italic, and
61: * normal (roman). The following table hard-codes the font metrics for
62: * ASCII, i.e., 32--127.
63: */
64:
1.16 kristaps 65: static const struct font fonts[TERMFONT__MAX] = {
1.24 kristaps 66: { "Times-Roman", {
67: { 250 },
68: { 333 },
69: { 408 },
70: { 500 },
71: { 500 },
72: { 833 },
73: { 778 },
74: { 333 },
75: { 333 },
76: { 333 },
77: { 500 },
78: { 564 },
79: { 250 },
80: { 333 },
81: { 250 },
82: { 278 },
83: { 500 },
84: { 500 },
85: { 500 },
86: { 500 },
87: { 500 },
88: { 500 },
89: { 500 },
90: { 500 },
91: { 500 },
92: { 500 },
93: { 278 },
94: { 278 },
95: { 564 },
96: { 564 },
97: { 564 },
98: { 444 },
99: { 921 },
100: { 722 },
101: { 667 },
102: { 667 },
103: { 722 },
104: { 611 },
105: { 556 },
106: { 722 },
107: { 722 },
108: { 333 },
109: { 389 },
110: { 722 },
111: { 611 },
112: { 889 },
113: { 722 },
114: { 722 },
115: { 556 },
116: { 722 },
117: { 667 },
118: { 556 },
119: { 611 },
120: { 722 },
121: { 722 },
122: { 944 },
123: { 722 },
124: { 722 },
125: { 611 },
126: { 333 },
127: { 278 },
128: { 333 },
129: { 469 },
130: { 500 },
131: { 333 },
132: { 444 },
133: { 500 },
134: { 444 },
135: { 500},
136: { 444},
137: { 333},
138: { 500},
139: { 500},
140: { 278},
141: { 278},
142: { 500},
143: { 278},
144: { 778},
145: { 500},
146: { 500},
147: { 500},
148: { 500},
149: { 333},
150: { 389},
151: { 278},
152: { 500},
153: { 500},
154: { 722},
155: { 500},
156: { 500},
157: { 444},
158: { 480},
159: { 200},
160: { 480},
161: { 541},
162: } },
163: { "Times-Bold", {
164: { 250 },
165: { 333 },
166: { 555 },
167: { 500 },
168: { 500 },
169: { 1000 },
170: { 833 },
171: { 333 },
172: { 333 },
173: { 333 },
174: { 500 },
175: { 570 },
176: { 250 },
177: { 333 },
178: { 250 },
179: { 278 },
180: { 500 },
181: { 500 },
182: { 500 },
183: { 500 },
184: { 500 },
185: { 500 },
186: { 500 },
187: { 500 },
188: { 500 },
189: { 500 },
190: { 333 },
191: { 333 },
192: { 570 },
193: { 570 },
194: { 570 },
195: { 500 },
196: { 930 },
197: { 722 },
198: { 667 },
199: { 722 },
200: { 722 },
201: { 667 },
202: { 611 },
203: { 778 },
204: { 778 },
205: { 389 },
206: { 500 },
207: { 778 },
208: { 667 },
209: { 944 },
210: { 722 },
211: { 778 },
212: { 611 },
213: { 778 },
214: { 722 },
215: { 556 },
216: { 667 },
217: { 722 },
218: { 722 },
219: { 1000 },
220: { 722 },
221: { 722 },
222: { 667 },
223: { 333 },
224: { 278 },
225: { 333 },
226: { 581 },
227: { 500 },
228: { 333 },
229: { 500 },
230: { 556 },
231: { 444 },
1.22 kristaps 232: { 556 },
1.24 kristaps 233: { 444 },
234: { 333 },
1.22 kristaps 235: { 500 },
1.24 kristaps 236: { 556 },
1.22 kristaps 237: { 278 },
1.24 kristaps 238: { 333 },
239: { 556 },
1.22 kristaps 240: { 278 },
1.24 kristaps 241: { 833 },
1.22 kristaps 242: { 556 },
1.24 kristaps 243: { 500 },
1.22 kristaps 244: { 556 },
245: { 556 },
246: { 444 },
1.24 kristaps 247: { 389 },
248: { 333 },
1.22 kristaps 249: { 556 },
250: { 500 },
1.24 kristaps 251: { 722 },
252: { 500 },
1.22 kristaps 253: { 500 },
1.24 kristaps 254: { 444 },
255: { 394 },
256: { 220 },
257: { 394 },
258: { 520 },
1.13 kristaps 259: } },
1.24 kristaps 260: { "Times-Italic", {
261: { 250 },
262: { 333 },
263: { 420 },
264: { 500 },
265: { 500 },
266: { 833 },
267: { 778 },
268: { 333 },
269: { 333 },
270: { 333 },
271: { 500 },
272: { 675 },
273: { 250 },
274: { 333 },
275: { 250 },
276: { 278 },
277: { 500 },
278: { 500 },
279: { 500 },
280: { 500 },
281: { 500 },
282: { 500 },
283: { 500 },
284: { 500 },
285: { 500 },
286: { 500 },
287: { 333 },
288: { 333 },
289: { 675 },
290: { 675 },
291: { 675 },
292: { 500 },
293: { 920 },
294: { 611 },
295: { 611 },
296: { 667 },
297: { 722 },
298: { 611 },
299: { 611 },
300: { 722 },
301: { 722 },
302: { 333 },
303: { 444 },
304: { 667 },
305: { 556 },
306: { 833 },
307: { 667 },
308: { 722 },
309: { 611 },
310: { 722 },
311: { 611 },
312: { 500 },
313: { 556 },
314: { 722 },
315: { 611 },
316: { 833 },
317: { 611 },
318: { 556 },
319: { 556 },
320: { 389 },
321: { 278 },
322: { 389 },
323: { 422 },
324: { 500 },
325: { 333 },
326: { 500 },
327: { 500 },
328: { 444 },
1.22 kristaps 329: { 500 },
1.24 kristaps 330: { 444 },
331: { 278 },
1.22 kristaps 332: { 500 },
333: { 500 },
334: { 278 },
1.24 kristaps 335: { 278 },
336: { 444 },
337: { 278 },
338: { 722 },
339: { 500 },
340: { 500 },
341: { 500 },
1.22 kristaps 342: { 500 },
1.24 kristaps 343: { 389 },
344: { 389 },
1.22 kristaps 345: { 278 },
346: { 500 },
1.24 kristaps 347: { 444 },
348: { 667 },
349: { 444 },
350: { 444 },
351: { 389 },
352: { 400 },
1.22 kristaps 353: { 275 },
1.24 kristaps 354: { 400 },
355: { 541 },
1.13 kristaps 356: } },
357: };
358:
1.15 kristaps 359: /* These work the buffer used by the header and footer. */
1.4 kristaps 360: #define PS_BUFSLOP 128
361: #define PS_GROWBUF(p, sz) \
362: do if ((p)->engine.ps.psmargcur + (sz) > \
363: (p)->engine.ps.psmargsz) { \
364: (p)->engine.ps.psmargsz += /* CONSTCOND */ \
365: MAX(PS_BUFSLOP, (sz)); \
366: (p)->engine.ps.psmarg = realloc \
367: ((p)->engine.ps.psmarg, \
368: (p)->engine.ps.psmargsz); \
369: if (NULL == (p)->engine.ps.psmarg) { \
370: perror(NULL); \
371: exit(EXIT_FAILURE); \
372: } \
373: } while (/* CONSTCOND */ 0)
374:
1.9 kristaps 375:
1.20 kristaps 376: static double ps_hspan(const struct termp *,
1.19 kristaps 377: const struct roffsu *);
378: static size_t ps_width(const struct termp *, char);
379: static void ps_advance(struct termp *, size_t);
1.2 kristaps 380: static void ps_begin(struct termp *);
381: static void ps_end(struct termp *);
382: static void ps_endline(struct termp *);
1.9 kristaps 383: static void ps_fclose(struct termp *);
1.19 kristaps 384: static void ps_letter(struct termp *, char);
1.9 kristaps 385: static void ps_pclose(struct termp *);
1.13 kristaps 386: static void ps_pletter(struct termp *, int);
1.4 kristaps 387: static void ps_printf(struct termp *, const char *, ...);
388: static void ps_putchar(struct termp *, char);
1.9 kristaps 389: static void ps_setfont(struct termp *, enum termfont);
1.2 kristaps 390:
391:
1.1 kristaps 392: void *
1.17 kristaps 393: ps_alloc(char *outopts)
1.1 kristaps 394: {
395: struct termp *p;
1.27 ! kristaps 396: size_t pagex, pagey, margin, lineheight, m1, m2;
1.17 kristaps 397: const char *toks[2];
1.25 kristaps 398: const char *pp;
1.17 kristaps 399: char *v;
1.1 kristaps 400:
401: if (NULL == (p = term_alloc(TERMENC_ASCII)))
402: return(NULL);
403:
1.19 kristaps 404: p->advance = ps_advance;
1.2 kristaps 405: p->begin = ps_begin;
406: p->end = ps_end;
407: p->endline = ps_endline;
1.19 kristaps 408: p->hspan = ps_hspan;
409: p->letter = ps_letter;
410: p->type = TERMTYPE_PS;
1.11 kristaps 411: p->width = ps_width;
1.21 kristaps 412:
1.17 kristaps 413: toks[0] = "paper";
414: toks[1] = NULL;
415:
1.25 kristaps 416: pp = NULL;
1.19 kristaps 417:
1.17 kristaps 418: while (outopts && *outopts)
419: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
420: case (0):
1.25 kristaps 421: pp = v;
1.17 kristaps 422: break;
423: default:
424: break;
425: }
1.16 kristaps 426:
1.25 kristaps 427: /* Default to US letter (millimetres). */
428:
1.27 ! kristaps 429: pagex = DEFPAGEX_MM;
! 430: pagey = DEFPAGEY_MM;
1.25 kristaps 431:
432: /*
433: * The ISO-269 paper sizes can be calculated automatically, but
434: * it would require bringing in -lm for pow() and I'd rather not
435: * do that. So just do it the easy way for now. Since this
436: * only happens once, I'm not terribly concerned.
437: */
438:
439: if (pp && strcasecmp(pp, "letter")) {
440: if (0 == strcasecmp(pp, "a3")) {
441: pagex = 297;
442: pagey = 420;
443: } else if (0 == strcasecmp(pp, "a4")) {
444: pagex = 210;
445: pagey = 297;
446: } else if (0 == strcasecmp(pp, "a5")) {
447: pagex = 148;
448: pagey = 210;
449: } else if (0 == strcasecmp(pp, "legal")) {
450: pagex = 216;
451: pagey = 356;
452: } else if (2 != sscanf(pp, "%zux%zu", &pagex, &pagey))
453: fprintf(stderr, "%s: Unknown paper\n", pp);
1.27 ! kristaps 454: } else if (NULL == pp)
! 455: pp = "letter";
! 456:
! 457: /* Enforce minimum page size >= (2 times) min-margin. */
! 458:
! 459: if ((2 * MINMARGIN_MM) >= pagex) {
! 460: fprintf(stderr, "%s: Insufficient page width\n", pp);
! 461: pagex = DEFPAGEX_MM;
! 462: } else if ((2 * MINMARGIN_MM >= pagey)) {
! 463: fprintf(stderr, "%s: Insufficient page length\n", pp);
! 464: pagey = DEFPAGEY_MM;
1.18 kristaps 465: }
466:
1.27 ! kristaps 467: /*
! 468: * This MUST be defined before any PNT2AFM or AFM2PNT
! 469: * calculations occur.
! 470: */
! 471:
! 472: p->engine.ps.scale = 11;
! 473:
1.25 kristaps 474: /* Remember millimetres -> AFM units. */
475:
476: pagex = PNT2AFM(p, ((double)pagex * 2.834));
477: pagey = PNT2AFM(p, ((double)pagey * 2.834));
478:
1.27 ! kristaps 479: /*
! 480: * Calculate margins. First get the minimum text width: either
! 481: * page minus margins or width of 65 'm' characters. Set total
! 482: * margins to page size minus text width.
! 483: */
! 484:
! 485: m1 = ps_width(p, 'm') * 65;
! 486: m2 = pagex - (2 * PNT2AFM(p, MINMARGIN_PNT));
! 487: margin = (pagex - (m1 < m2 ? m1 : m2)) / 2;
! 488:
! 489: lineheight = PNT2AFM(p, 16);
1.16 kristaps 490:
491: p->engine.ps.width = pagex;
492: p->engine.ps.height = pagey;
1.27 ! kristaps 493: p->engine.ps.header = pagey - (margin / 2) - (lineheight / 2);
1.16 kristaps 494: p->engine.ps.top = pagey - margin;
1.27 ! kristaps 495: p->engine.ps.footer = (margin / 2) - (lineheight / 2);
1.16 kristaps 496: p->engine.ps.bottom = margin;
497: p->engine.ps.left = margin;
1.18 kristaps 498: p->engine.ps.lineheight = lineheight;
1.16 kristaps 499:
500: p->defrmargin = pagex - (margin * 2);
1.1 kristaps 501: return(p);
502: }
503:
504:
505: void
506: ps_free(void *arg)
507: {
1.4 kristaps 508: struct termp *p;
509:
510: p = (struct termp *)arg;
511:
512: if (p->engine.ps.psmarg)
513: free(p->engine.ps.psmarg);
514:
515: term_free(p);
516: }
517:
518:
519: static void
520: ps_printf(struct termp *p, const char *fmt, ...)
521: {
522: va_list ap;
523: int pos;
524:
525: va_start(ap, fmt);
526:
527: /*
528: * If we're running in regular mode, then pipe directly into
529: * vprintf(). If we're processing margins, then push the data
530: * into our growable margin buffer.
531: */
1.1 kristaps 532:
1.4 kristaps 533: if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
534: vprintf(fmt, ap);
535: va_end(ap);
536: return;
537: }
538:
539: /*
540: * XXX: I assume that the in-margin print won't exceed
541: * PS_BUFSLOP (128 bytes), which is reasonable but still an
542: * assumption that will cause pukeage if it's not the case.
543: */
544:
545: PS_GROWBUF(p, PS_BUFSLOP);
546:
547: pos = (int)p->engine.ps.psmargcur;
548: vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap);
549: p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg);
1.5 kristaps 550:
551: va_end(ap);
1.4 kristaps 552: }
553:
554:
555: static void
556: ps_putchar(struct termp *p, char c)
557: {
558: int pos;
559:
560: /* See ps_printf(). */
561:
562: if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
563: putchar(c);
564: return;
565: }
566:
567: PS_GROWBUF(p, 2);
568:
569: pos = (int)p->engine.ps.psmargcur++;
1.5 kristaps 570: p->engine.ps.psmarg[pos++] = c;
1.4 kristaps 571: p->engine.ps.psmarg[pos] = '\0';
1.2 kristaps 572: }
573:
574:
1.3 kristaps 575: /* ARGSUSED */
1.2 kristaps 576: static void
577: ps_end(struct termp *p)
578: {
579:
1.4 kristaps 580: /*
581: * At the end of the file, do one last showpage. This is the
582: * same behaviour as groff(1) and works for multiple pages as
583: * well as just one.
584: */
585:
1.8 kristaps 586: assert(0 == p->engine.ps.psstate);
587: assert('\0' == p->engine.ps.last);
1.4 kristaps 588: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
589: printf("%s", p->engine.ps.psmarg);
1.16 kristaps 590: p->engine.ps.pages++;
1.4 kristaps 591: printf("showpage\n");
1.16 kristaps 592:
593: printf("%%%%Trailer\n");
594: printf("%%%%Pages: %zu\n", p->engine.ps.pages);
595: printf("%%%%EOF\n");
1.2 kristaps 596: }
597:
598:
599: static void
600: ps_begin(struct termp *p)
601: {
1.13 kristaps 602: time_t t;
1.16 kristaps 603: int i;
1.2 kristaps 604:
1.9 kristaps 605: /*
606: * Print margins into margin buffer. Nothing gets output to the
607: * screen yet, so we don't need to initialise the primary state.
1.2 kristaps 608: */
609:
1.4 kristaps 610: if (p->engine.ps.psmarg) {
611: assert(p->engine.ps.psmargsz);
612: p->engine.ps.psmarg[0] = '\0';
613: }
614:
615: p->engine.ps.psmargcur = 0;
1.9 kristaps 616: p->engine.ps.psstate = PS_MARGINS;
1.16 kristaps 617: p->engine.ps.pscol = p->engine.ps.left;
618: p->engine.ps.psrow = p->engine.ps.header;
1.4 kristaps 619:
1.9 kristaps 620: ps_setfont(p, TERMFONT_NONE);
1.4 kristaps 621:
622: (*p->headf)(p, p->argf);
623: (*p->endline)(p);
624:
1.16 kristaps 625: p->engine.ps.pscol = p->engine.ps.left;
626: p->engine.ps.psrow = p->engine.ps.footer;
1.4 kristaps 627:
628: (*p->footf)(p, p->argf);
629: (*p->endline)(p);
630:
631: p->engine.ps.psstate &= ~PS_MARGINS;
1.9 kristaps 632:
1.4 kristaps 633: assert(0 == p->engine.ps.psstate);
1.9 kristaps 634: assert(p->engine.ps.psmarg);
635: assert('\0' != p->engine.ps.psmarg[0]);
636:
637: /*
638: * Print header and initialise page state. Following this,
639: * stuff gets printed to the screen, so make sure we're sane.
640: */
1.4 kristaps 641:
1.13 kristaps 642: t = time(NULL);
643:
1.16 kristaps 644: printf("%%!PS-Adobe-3.0\n");
1.13 kristaps 645: printf("%%%%Creator: mandoc-%s\n", VERSION);
646: printf("%%%%CreationDate: %s", ctime(&t));
1.16 kristaps 647: printf("%%%%DocumentData: Clean7Bit\n");
648: printf("%%%%Orientation: Portrait\n");
649: printf("%%%%Pages: (atend)\n");
1.13 kristaps 650: printf("%%%%PageOrder: Ascend\n");
1.16 kristaps 651: printf("%%%%DocumentMedia: Default %zu %zu 0 () ()\n",
1.23 kristaps 652: AFM2PNT(p, p->engine.ps.width),
653: AFM2PNT(p, p->engine.ps.height));
1.16 kristaps 654: printf("%%%%DocumentNeededResources: font");
655: for (i = 0; i < (int)TERMFONT__MAX; i++)
656: printf(" %s", fonts[i].name);
657: printf("\n%%%%EndComments\n");
658:
659: printf("%%%%Page: %zu %zu\n",
660: p->engine.ps.pages + 1,
661: p->engine.ps.pages + 1);
1.13 kristaps 662:
1.9 kristaps 663: ps_setfont(p, TERMFONT_NONE);
1.16 kristaps 664: p->engine.ps.pscol = p->engine.ps.left;
665: p->engine.ps.psrow = p->engine.ps.top;
1.2 kristaps 666: }
667:
668:
669: static void
1.13 kristaps 670: ps_pletter(struct termp *p, int c)
1.2 kristaps 671: {
1.14 kristaps 672: int f;
1.2 kristaps 673:
1.9 kristaps 674: /*
675: * If we're not in a PostScript "word" context, then open one
676: * now at the current cursor.
677: */
678:
1.2 kristaps 679: if ( ! (PS_INLINE & p->engine.ps.psstate)) {
1.4 kristaps 680: ps_printf(p, "%zu %zu moveto\n(",
1.21 kristaps 681: AFM2PNT(p, p->engine.ps.pscol),
682: AFM2PNT(p, p->engine.ps.psrow));
1.2 kristaps 683: p->engine.ps.psstate |= PS_INLINE;
684: }
685:
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 ('\\'):
1.4 kristaps 699: ps_putchar(p, '\\');
1.2 kristaps 700: break;
701: default:
702: break;
703: }
704:
705: /* Write the character and adjust where we are on the page. */
1.9 kristaps 706:
1.14 kristaps 707: f = (int)p->engine.ps.lastf;
1.13 kristaps 708:
1.14 kristaps 709: if (c <= 32 || (c - 32 > MAXCHAR)) {
1.13 kristaps 710: ps_putchar(p, ' ');
1.18 kristaps 711: p->engine.ps.pscol += fonts[f].gly[0].wx;
1.13 kristaps 712: return;
713: }
714:
1.25 kristaps 715: ps_putchar(p, (char)c);
1.14 kristaps 716: c -= 32;
1.18 kristaps 717: p->engine.ps.pscol += fonts[f].gly[c].wx;
1.2 kristaps 718: }
719:
720:
721: static void
1.9 kristaps 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:
731: if ( ! (PS_INLINE & p->engine.ps.psstate))
732: return;
733:
734: ps_printf(p, ") show\n");
735: p->engine.ps.psstate &= ~PS_INLINE;
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:
760: if ( ! (PS_INLINE & p->engine.ps.psstate))
761: return;
762:
763: ps_pclose(p);
764: }
765:
766:
767: static void
1.8 kristaps 768: ps_letter(struct termp *p, char c)
769: {
770: char cc;
1.9 kristaps 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:
1.8 kristaps 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);
1.9 kristaps 787: p->engine.ps.last = '\0';
1.8 kristaps 788: } else if (8 == c) {
789: assert(8 != p->engine.ps.last);
1.9 kristaps 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: }
1.8 kristaps 799: p->engine.ps.last = c;
800: return;
801: } else {
1.9 kristaps 802: if (p->engine.ps.lastf != TERMFONT_NONE) {
803: ps_pclose(p);
804: ps_setfont(p, TERMFONT_NONE);
805: }
1.8 kristaps 806: cc = p->engine.ps.last;
807: p->engine.ps.last = c;
808: c = cc;
809: }
810:
1.9 kristaps 811: ps_pletter(p, c);
1.8 kristaps 812: }
813:
814:
815: static void
1.2 kristaps 816: ps_advance(struct termp *p, size_t len)
817: {
818:
1.9 kristaps 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: */
1.8 kristaps 825:
1.9 kristaps 826: ps_fclose(p);
1.14 kristaps 827: p->engine.ps.pscol += len;
1.2 kristaps 828: }
829:
830:
831: static void
832: ps_endline(struct termp *p)
833: {
1.8 kristaps 834:
1.9 kristaps 835: /* Close out any scopes we have open: we're at eoln. */
836:
837: ps_fclose(p);
1.2 kristaps 838:
1.9 kristaps 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: */
1.2 kristaps 844:
845: if (PS_MARGINS & p->engine.ps.psstate)
846: return;
847:
1.9 kristaps 848: /*
849: * Put us down a line. If we're at the page bottom, spit out a
850: * showpage and restart our row.
851: */
852:
1.16 kristaps 853: p->engine.ps.pscol = p->engine.ps.left;
854: if (p->engine.ps.psrow >= p->engine.ps.lineheight +
855: p->engine.ps.bottom) {
856: p->engine.ps.psrow -= p->engine.ps.lineheight;
1.2 kristaps 857: return;
858: }
859:
1.4 kristaps 860: assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
861: printf("%s", p->engine.ps.psmarg);
1.23 kristaps 862: printf("showpage\n");
863: p->engine.ps.pages++;
1.16 kristaps 864: printf("%%%%Page: %zu %zu\n",
865: p->engine.ps.pages + 1,
866: p->engine.ps.pages + 1);
867: p->engine.ps.psrow = p->engine.ps.top;
1.1 kristaps 868: }
1.9 kristaps 869:
870:
871: static void
872: ps_setfont(struct termp *p, enum termfont f)
873: {
874:
1.16 kristaps 875: assert(f < TERMFONT__MAX);
1.21 kristaps 876: ps_printf(p, "/%s %zu selectfont\n",
877: fonts[(int)f].name, p->engine.ps.scale);
1.9 kristaps 878: p->engine.ps.lastf = f;
879: }
880:
1.11 kristaps 881:
1.12 kristaps 882: /* ARGSUSED */
1.11 kristaps 883: static size_t
884: ps_width(const struct termp *p, char c)
885: {
886:
1.14 kristaps 887: if (c <= 32 || c - 32 >= MAXCHAR)
1.18 kristaps 888: return(fonts[(int)TERMFONT_NONE].gly[0].wx);
1.14 kristaps 889:
890: c -= 32;
1.18 kristaps 891: return(fonts[(int)TERMFONT_NONE].gly[(int)c].wx);
1.11 kristaps 892: }
1.19 kristaps 893:
894:
1.20 kristaps 895: static double
1.19 kristaps 896: ps_hspan(const struct termp *p, const struct roffsu *su)
897: {
898: double r;
899:
900: /*
901: * All of these measurements are derived by converting from the
1.21 kristaps 902: * native measurement to AFM units.
1.19 kristaps 903: */
904:
905: switch (su->unit) {
906: case (SCALE_CM):
1.21 kristaps 907: r = PNT2AFM(p, su->scale * 28.34);
1.19 kristaps 908: break;
909: case (SCALE_IN):
1.21 kristaps 910: r = PNT2AFM(p, su->scale * 72);
1.19 kristaps 911: break;
912: case (SCALE_PC):
1.21 kristaps 913: r = PNT2AFM(p, su->scale * 12);
1.19 kristaps 914: break;
915: case (SCALE_PT):
1.21 kristaps 916: r = PNT2AFM(p, su->scale * 100);
1.19 kristaps 917: break;
918: case (SCALE_EM):
919: r = su->scale *
920: fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
921: break;
922: case (SCALE_MM):
1.21 kristaps 923: r = PNT2AFM(p, su->scale * 2.834);
1.19 kristaps 924: break;
925: case (SCALE_EN):
926: r = su->scale *
927: fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
928: break;
929: case (SCALE_VS):
930: r = su->scale * p->engine.ps.lineheight;
931: break;
932: default:
933: r = su->scale;
934: break;
935: }
936:
1.20 kristaps 937: return(r);
1.19 kristaps 938: }
939: