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bugfix: make sure all variables are properly initialized
[mandoc.git] / term_ps.c
1 /* $Id: term_ps.c,v 1.58 2014/03/30 21:28:01 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) /* LINTED */ \
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) /* LINTED */ \
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 = /* LINTED */
516 (size_t)((double)pagex / 9.0);
517 marginy = /* LINTED */
518 (size_t)((double)pagey / 9.0);
519
520 /* Line-height is 1.4em. */
521
522 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
523
524 p->ps->width = p->ps->lastwidth = (size_t)pagex;
525 p->ps->height = (size_t)pagey;
526 p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
527 p->ps->top = pagey - marginy;
528 p->ps->footer = (marginy / 2) - (lineheight / 2);
529 p->ps->bottom = marginy;
530 p->ps->left = marginx;
531 p->ps->lineheight = lineheight;
532
533 p->defrmargin = pagex - (marginx * 2);
534 return(p);
535 }
536
537
538 static void
539 ps_setwidth(struct termp *p, int iop, size_t width)
540 {
541 size_t lastwidth;
542
543 lastwidth = p->ps->width;
544 if (0 < iop)
545 p->ps->width += width;
546 else if (0 > iop)
547 p->ps->width -= width;
548 else
549 p->ps->width = width ? width : p->ps->lastwidth;
550 p->ps->lastwidth = lastwidth;
551 }
552
553
554 void
555 pspdf_free(void *arg)
556 {
557 struct termp *p;
558
559 p = (struct termp *)arg;
560
561 if (p->ps->psmarg)
562 free(p->ps->psmarg);
563 if (p->ps->pdfobjs)
564 free(p->ps->pdfobjs);
565
566 free(p->ps);
567 term_free(p);
568 }
569
570
571 static void
572 ps_printf(struct termp *p, const char *fmt, ...)
573 {
574 va_list ap;
575 int pos, len;
576
577 va_start(ap, fmt);
578
579 /*
580 * If we're running in regular mode, then pipe directly into
581 * vprintf(). If we're processing margins, then push the data
582 * into our growable margin buffer.
583 */
584
585 if ( ! (PS_MARGINS & p->ps->flags)) {
586 len = vprintf(fmt, ap);
587 va_end(ap);
588 p->ps->pdfbytes += /* LINTED */
589 len < 0 ? 0 : (size_t)len;
590 return;
591 }
592
593 /*
594 * XXX: I assume that the in-margin print won't exceed
595 * PS_BUFSLOP (128 bytes), which is reasonable but still an
596 * assumption that will cause pukeage if it's not the case.
597 */
598
599 ps_growbuf(p, PS_BUFSLOP);
600
601 pos = (int)p->ps->psmargcur;
602 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap);
603
604 va_end(ap);
605
606 p->ps->psmargcur = strlen(p->ps->psmarg);
607 }
608
609
610 static void
611 ps_putchar(struct termp *p, char c)
612 {
613 int pos;
614
615 /* See ps_printf(). */
616
617 if ( ! (PS_MARGINS & p->ps->flags)) {
618 /* LINTED */
619 putchar(c);
620 p->ps->pdfbytes++;
621 return;
622 }
623
624 ps_growbuf(p, 2);
625
626 pos = (int)p->ps->psmargcur++;
627 p->ps->psmarg[pos++] = c;
628 p->ps->psmarg[pos] = '\0';
629 }
630
631
632 static void
633 pdf_obj(struct termp *p, size_t obj)
634 {
635
636 assert(obj > 0);
637
638 if ((obj - 1) >= p->ps->pdfobjsz) {
639 p->ps->pdfobjsz = obj + 128;
640 p->ps->pdfobjs = realloc
641 (p->ps->pdfobjs,
642 p->ps->pdfobjsz * sizeof(size_t));
643 if (NULL == p->ps->pdfobjs) {
644 perror(NULL);
645 exit((int)MANDOCLEVEL_SYSERR);
646 }
647 }
648
649 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes;
650 ps_printf(p, "%zu 0 obj\n", obj);
651 }
652
653
654 static void
655 ps_closepage(struct termp *p)
656 {
657 int i;
658 size_t len, base;
659
660 /*
661 * Close out a page that we've already flushed to output. In
662 * PostScript, we simply note that the page must be showed. In
663 * PDF, we must now create the Length, Resource, and Page node
664 * for the page contents.
665 */
666
667 assert(p->ps->psmarg && p->ps->psmarg[0]);
668 ps_printf(p, "%s", p->ps->psmarg);
669
670 if (TERMTYPE_PS != p->type) {
671 ps_printf(p, "ET\n");
672
673 len = p->ps->pdfbytes - p->ps->pdflastpg;
674 base = p->ps->pages * 4 + p->ps->pdfbody;
675
676 ps_printf(p, "endstream\nendobj\n");
677
678 /* Length of content. */
679 pdf_obj(p, base + 1);
680 ps_printf(p, "%zu\nendobj\n", len);
681
682 /* Resource for content. */
683 pdf_obj(p, base + 2);
684 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
685 ps_printf(p, "/Font <<\n");
686 for (i = 0; i < (int)TERMFONT__MAX; i++)
687 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
688 ps_printf(p, ">>\n>>\n");
689
690 /* Page node. */
691 pdf_obj(p, base + 3);
692 ps_printf(p, "<<\n");
693 ps_printf(p, "/Type /Page\n");
694 ps_printf(p, "/Parent 2 0 R\n");
695 ps_printf(p, "/Resources %zu 0 R\n", base + 2);
696 ps_printf(p, "/Contents %zu 0 R\n", base);
697 ps_printf(p, ">>\nendobj\n");
698 } else
699 ps_printf(p, "showpage\n");
700
701 p->ps->pages++;
702 p->ps->psrow = p->ps->top;
703 assert( ! (PS_NEWPAGE & p->ps->flags));
704 p->ps->flags |= PS_NEWPAGE;
705 }
706
707
708 /* ARGSUSED */
709 static void
710 ps_end(struct termp *p)
711 {
712 size_t i, xref, base;
713
714 /*
715 * At the end of the file, do one last showpage. This is the
716 * same behaviour as groff(1) and works for multiple pages as
717 * well as just one.
718 */
719
720 if ( ! (PS_NEWPAGE & p->ps->flags)) {
721 assert(0 == p->ps->flags);
722 assert('\0' == p->ps->last);
723 ps_closepage(p);
724 }
725
726 if (TERMTYPE_PS == p->type) {
727 ps_printf(p, "%%%%Trailer\n");
728 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages);
729 ps_printf(p, "%%%%EOF\n");
730 return;
731 }
732
733 pdf_obj(p, 2);
734 ps_printf(p, "<<\n/Type /Pages\n");
735 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n",
736 (size_t)AFM2PNT(p, p->ps->width),
737 (size_t)AFM2PNT(p, p->ps->height));
738
739 ps_printf(p, "/Count %zu\n", p->ps->pages);
740 ps_printf(p, "/Kids [");
741
742 for (i = 0; i < p->ps->pages; i++)
743 ps_printf(p, " %zu 0 R", i * 4 +
744 p->ps->pdfbody + 3);
745
746 base = (p->ps->pages - 1) * 4 +
747 p->ps->pdfbody + 4;
748
749 ps_printf(p, "]\n>>\nendobj\n");
750 pdf_obj(p, base);
751 ps_printf(p, "<<\n");
752 ps_printf(p, "/Type /Catalog\n");
753 ps_printf(p, "/Pages 2 0 R\n");
754 ps_printf(p, ">>\n");
755 xref = p->ps->pdfbytes;
756 ps_printf(p, "xref\n");
757 ps_printf(p, "0 %zu\n", base + 1);
758 ps_printf(p, "0000000000 65535 f \n");
759
760 for (i = 0; i < base; i++)
761 ps_printf(p, "%.10zu 00000 n \n",
762 p->ps->pdfobjs[(int)i]);
763
764 ps_printf(p, "trailer\n");
765 ps_printf(p, "<<\n");
766 ps_printf(p, "/Size %zu\n", base + 1);
767 ps_printf(p, "/Root %zu 0 R\n", base);
768 ps_printf(p, "/Info 1 0 R\n");
769 ps_printf(p, ">>\n");
770 ps_printf(p, "startxref\n");
771 ps_printf(p, "%zu\n", xref);
772 ps_printf(p, "%%%%EOF\n");
773 }
774
775
776 static void
777 ps_begin(struct termp *p)
778 {
779 time_t t;
780 int i;
781
782 /*
783 * Print margins into margin buffer. Nothing gets output to the
784 * screen yet, so we don't need to initialise the primary state.
785 */
786
787 if (p->ps->psmarg) {
788 assert(p->ps->psmargsz);
789 p->ps->psmarg[0] = '\0';
790 }
791
792 /*p->ps->pdfbytes = 0;*/
793 p->ps->psmargcur = 0;
794 p->ps->flags = PS_MARGINS;
795 p->ps->pscol = p->ps->left;
796 p->ps->psrow = p->ps->header;
797
798 ps_setfont(p, TERMFONT_NONE);
799
800 (*p->headf)(p, p->argf);
801 (*p->endline)(p);
802
803 p->ps->pscol = p->ps->left;
804 p->ps->psrow = p->ps->footer;
805
806 (*p->footf)(p, p->argf);
807 (*p->endline)(p);
808
809 p->ps->flags &= ~PS_MARGINS;
810
811 assert(0 == p->ps->flags);
812 assert(p->ps->psmarg);
813 assert('\0' != p->ps->psmarg[0]);
814
815 /*
816 * Print header and initialise page state. Following this,
817 * stuff gets printed to the screen, so make sure we're sane.
818 */
819
820 t = time(NULL);
821
822 if (TERMTYPE_PS == p->type) {
823 ps_printf(p, "%%!PS-Adobe-3.0\n");
824 ps_printf(p, "%%%%CreationDate: %s", ctime(&t));
825 ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
826 ps_printf(p, "%%%%Orientation: Portrait\n");
827 ps_printf(p, "%%%%Pages: (atend)\n");
828 ps_printf(p, "%%%%PageOrder: Ascend\n");
829 ps_printf(p, "%%%%DocumentMedia: "
830 "Default %zu %zu 0 () ()\n",
831 (size_t)AFM2PNT(p, p->ps->width),
832 (size_t)AFM2PNT(p, p->ps->height));
833 ps_printf(p, "%%%%DocumentNeededResources: font");
834
835 for (i = 0; i < (int)TERMFONT__MAX; i++)
836 ps_printf(p, " %s", fonts[i].name);
837
838 ps_printf(p, "\n%%%%EndComments\n");
839 } else {
840 ps_printf(p, "%%PDF-1.1\n");
841 pdf_obj(p, 1);
842 ps_printf(p, "<<\n");
843 ps_printf(p, ">>\n");
844 ps_printf(p, "endobj\n");
845
846 for (i = 0; i < (int)TERMFONT__MAX; i++) {
847 pdf_obj(p, (size_t)i + 3);
848 ps_printf(p, "<<\n");
849 ps_printf(p, "/Type /Font\n");
850 ps_printf(p, "/Subtype /Type1\n");
851 ps_printf(p, "/Name /F%d\n", i);
852 ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
853 ps_printf(p, ">>\n");
854 }
855 }
856
857 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3;
858 p->ps->pscol = p->ps->left;
859 p->ps->psrow = p->ps->top;
860 p->ps->flags |= PS_NEWPAGE;
861 ps_setfont(p, TERMFONT_NONE);
862 }
863
864
865 static void
866 ps_pletter(struct termp *p, int c)
867 {
868 int f;
869
870 /*
871 * If we haven't opened a page context, then output that we're
872 * in a new page and make sure the font is correctly set.
873 */
874
875 if (PS_NEWPAGE & p->ps->flags) {
876 if (TERMTYPE_PS == p->type) {
877 ps_printf(p, "%%%%Page: %zu %zu\n",
878 p->ps->pages + 1,
879 p->ps->pages + 1);
880 ps_printf(p, "/%s %zu selectfont\n",
881 fonts[(int)p->ps->lastf].name,
882 p->ps->scale);
883 } else {
884 pdf_obj(p, p->ps->pdfbody +
885 p->ps->pages * 4);
886 ps_printf(p, "<<\n");
887 ps_printf(p, "/Length %zu 0 R\n",
888 p->ps->pdfbody + 1 +
889 p->ps->pages * 4);
890 ps_printf(p, ">>\nstream\n");
891 }
892 p->ps->pdflastpg = p->ps->pdfbytes;
893 p->ps->flags &= ~PS_NEWPAGE;
894 }
895
896 /*
897 * If we're not in a PostScript "word" context, then open one
898 * now at the current cursor.
899 */
900
901 if ( ! (PS_INLINE & p->ps->flags)) {
902 if (TERMTYPE_PS != p->type) {
903 ps_printf(p, "BT\n/F%d %zu Tf\n",
904 (int)p->ps->lastf,
905 p->ps->scale);
906 ps_printf(p, "%.3f %.3f Td\n(",
907 AFM2PNT(p, p->ps->pscol),
908 AFM2PNT(p, p->ps->psrow));
909 } else
910 ps_printf(p, "%.3f %.3f moveto\n(",
911 AFM2PNT(p, p->ps->pscol),
912 AFM2PNT(p, p->ps->psrow));
913 p->ps->flags |= PS_INLINE;
914 }
915
916 assert( ! (PS_NEWPAGE & p->ps->flags));
917
918 /*
919 * We need to escape these characters as per the PostScript
920 * specification. We would also escape non-graphable characters
921 * (like tabs), but none of them would get to this point and
922 * it's superfluous to abort() on them.
923 */
924
925 switch (c) {
926 case ('('):
927 /* FALLTHROUGH */
928 case (')'):
929 /* FALLTHROUGH */
930 case ('\\'):
931 ps_putchar(p, '\\');
932 break;
933 default:
934 break;
935 }
936
937 /* Write the character and adjust where we are on the page. */
938
939 f = (int)p->ps->lastf;
940
941 if (c <= 32 || (c - 32 >= MAXCHAR)) {
942 ps_putchar(p, ' ');
943 p->ps->pscol += (size_t)fonts[f].gly[0].wx;
944 return;
945 }
946
947 ps_putchar(p, (char)c);
948 c -= 32;
949 p->ps->pscol += (size_t)fonts[f].gly[c].wx;
950 }
951
952
953 static void
954 ps_pclose(struct termp *p)
955 {
956
957 /*
958 * Spit out that we're exiting a word context (this is a
959 * "partial close" because we don't check the last-char buffer
960 * or anything).
961 */
962
963 if ( ! (PS_INLINE & p->ps->flags))
964 return;
965
966 if (TERMTYPE_PS != p->type) {
967 ps_printf(p, ") Tj\nET\n");
968 } else
969 ps_printf(p, ") show\n");
970
971 p->ps->flags &= ~PS_INLINE;
972 }
973
974
975 static void
976 ps_fclose(struct termp *p)
977 {
978
979 /*
980 * Strong closure: if we have a last-char, spit it out after
981 * checking that we're in the right font mode. This will of
982 * course open a new scope, if applicable.
983 *
984 * Following this, close out any scope that's open.
985 */
986
987 if ('\0' != p->ps->last) {
988 if (p->ps->lastf != TERMFONT_NONE) {
989 ps_pclose(p);
990 ps_setfont(p, TERMFONT_NONE);
991 }
992 ps_pletter(p, p->ps->last);
993 p->ps->last = '\0';
994 }
995
996 if ( ! (PS_INLINE & p->ps->flags))
997 return;
998
999 ps_pclose(p);
1000 }
1001
1002
1003 static void
1004 ps_letter(struct termp *p, int arg)
1005 {
1006 char cc, c;
1007
1008 /* LINTED */
1009 c = arg >= 128 || arg <= 0 ? '?' : arg;
1010
1011 /*
1012 * State machine dictates whether to buffer the last character
1013 * or not. Basically, encoded words are detected by checking if
1014 * we're an "8" and switching on the buffer. Then we put "8" in
1015 * our buffer, and on the next charater, flush both character
1016 * and buffer. Thus, "regular" words are detected by having a
1017 * regular character and a regular buffer character.
1018 */
1019
1020 if ('\0' == p->ps->last) {
1021 assert(8 != c);
1022 p->ps->last = c;
1023 return;
1024 } else if (8 == p->ps->last) {
1025 assert(8 != c);
1026 p->ps->last = '\0';
1027 } else if (8 == c) {
1028 assert(8 != p->ps->last);
1029 if ('_' == p->ps->last) {
1030 if (p->ps->lastf != TERMFONT_UNDER) {
1031 ps_pclose(p);
1032 ps_setfont(p, TERMFONT_UNDER);
1033 }
1034 } else if (p->ps->lastf != TERMFONT_BOLD) {
1035 ps_pclose(p);
1036 ps_setfont(p, TERMFONT_BOLD);
1037 }
1038 p->ps->last = c;
1039 return;
1040 } else {
1041 if (p->ps->lastf != TERMFONT_NONE) {
1042 ps_pclose(p);
1043 ps_setfont(p, TERMFONT_NONE);
1044 }
1045 cc = p->ps->last;
1046 p->ps->last = c;
1047 c = cc;
1048 }
1049
1050 ps_pletter(p, c);
1051 }
1052
1053
1054 static void
1055 ps_advance(struct termp *p, size_t len)
1056 {
1057
1058 /*
1059 * Advance some spaces. This can probably be made smarter,
1060 * i.e., to have multiple space-separated words in the same
1061 * scope, but this is easier: just close out the current scope
1062 * and readjust our column settings.
1063 */
1064
1065 ps_fclose(p);
1066 p->ps->pscol += len;
1067 }
1068
1069
1070 static void
1071 ps_endline(struct termp *p)
1072 {
1073
1074 /* Close out any scopes we have open: we're at eoln. */
1075
1076 ps_fclose(p);
1077
1078 /*
1079 * If we're in the margin, don't try to recalculate our current
1080 * row. XXX: if the column tries to be fancy with multiple
1081 * lines, we'll do nasty stuff.
1082 */
1083
1084 if (PS_MARGINS & p->ps->flags)
1085 return;
1086
1087 /* Left-justify. */
1088
1089 p->ps->pscol = p->ps->left;
1090
1091 /* If we haven't printed anything, return. */
1092
1093 if (PS_NEWPAGE & p->ps->flags)
1094 return;
1095
1096 /*
1097 * Put us down a line. If we're at the page bottom, spit out a
1098 * showpage and restart our row.
1099 */
1100
1101 if (p->ps->psrow >= p->ps->lineheight +
1102 p->ps->bottom) {
1103 p->ps->psrow -= p->ps->lineheight;
1104 return;
1105 }
1106
1107 ps_closepage(p);
1108 }
1109
1110
1111 static void
1112 ps_setfont(struct termp *p, enum termfont f)
1113 {
1114
1115 assert(f < TERMFONT__MAX);
1116 p->ps->lastf = f;
1117
1118 /*
1119 * If we're still at the top of the page, let the font-setting
1120 * be delayed until we actually have stuff to print.
1121 */
1122
1123 if (PS_NEWPAGE & p->ps->flags)
1124 return;
1125
1126 if (TERMTYPE_PS == p->type)
1127 ps_printf(p, "/%s %zu selectfont\n",
1128 fonts[(int)f].name,
1129 p->ps->scale);
1130 else
1131 ps_printf(p, "/F%d %zu Tf\n",
1132 (int)f,
1133 p->ps->scale);
1134 }
1135
1136
1137 /* ARGSUSED */
1138 static size_t
1139 ps_width(const struct termp *p, int c)
1140 {
1141
1142 if (c <= 32 || c - 32 >= MAXCHAR)
1143 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx);
1144
1145 c -= 32;
1146 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx);
1147 }
1148
1149
1150 static double
1151 ps_hspan(const struct termp *p, const struct roffsu *su)
1152 {
1153 double r;
1154
1155 /*
1156 * All of these measurements are derived by converting from the
1157 * native measurement to AFM units.
1158 */
1159
1160 switch (su->unit) {
1161 case (SCALE_CM):
1162 r = PNT2AFM(p, su->scale * 28.34);
1163 break;
1164 case (SCALE_IN):
1165 r = PNT2AFM(p, su->scale * 72);
1166 break;
1167 case (SCALE_PC):
1168 r = PNT2AFM(p, su->scale * 12);
1169 break;
1170 case (SCALE_PT):
1171 r = PNT2AFM(p, su->scale * 100);
1172 break;
1173 case (SCALE_EM):
1174 r = su->scale *
1175 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
1176 break;
1177 case (SCALE_MM):
1178 r = PNT2AFM(p, su->scale * 2.834);
1179 break;
1180 case (SCALE_EN):
1181 r = su->scale *
1182 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
1183 break;
1184 case (SCALE_VS):
1185 r = su->scale * p->ps->lineheight;
1186 break;
1187 default:
1188 r = su->scale;
1189 break;
1190 }
1191
1192 return(r);
1193 }
1194
1195 static void
1196 ps_growbuf(struct termp *p, size_t sz)
1197 {
1198 if (p->ps->psmargcur + sz <= p->ps->psmargsz)
1199 return;
1200
1201 if (sz < PS_BUFSLOP)
1202 sz = PS_BUFSLOP;
1203
1204 p->ps->psmargsz += sz;
1205
1206 p->ps->psmarg = mandoc_realloc
1207 (p->ps->psmarg, p->ps->psmargsz);
1208 }
1209
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