]> git.cameronkatri.com Git - mandoc.git/blob - term_ps.c
git.ckatri.com / mandoc.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
When a file is given on the command line, actually exists, and its name
[mandoc.git] / term_ps.c
1 /* $Id: term_ps.c,v 1.71 2014/12/19 17:12:04 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 #include "config.h"
19
20 #include <sys/types.h>
21
22 #include <assert.h>
23 #include <stdarg.h>
24 #include <stdint.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <unistd.h>
29
30 #include "mandoc_aux.h"
31 #include "out.h"
32 #include "term.h"
33 #include "main.h"
34
35 /* These work the buffer used by the header and footer. */
36 #define PS_BUFSLOP 128
37
38 /* Convert PostScript point "x" to an AFM unit. */
39 #define PNT2AFM(p, x) \
40 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale))
41
42 /* Convert an AFM unit "x" to a PostScript points */
43 #define AFM2PNT(p, x) \
44 ((double)(x) / (1000.0 / (double)(p)->ps->scale))
45
46 struct glyph {
47 unsigned short wx; /* WX in AFM */
48 };
49
50 struct font {
51 const char *name; /* FontName in AFM */
52 #define MAXCHAR 95 /* total characters we can handle */
53 struct glyph gly[MAXCHAR]; /* glyph metrics */
54 };
55
56 struct termp_ps {
57 int flags;
58 #define PS_INLINE (1 << 0) /* we're in a word */
59 #define PS_MARGINS (1 << 1) /* we're in the margins */
60 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */
61 #define PS_BACKSP (1 << 3) /* last character was backspace */
62 size_t pscol; /* visible column (AFM units) */
63 size_t psrow; /* visible row (AFM units) */
64 char *psmarg; /* margin buf */
65 size_t psmargsz; /* margin buf size */
66 size_t psmargcur; /* cur index in margin buf */
67 char last; /* last non-backspace seen */
68 enum termfont lastf; /* last set font */
69 enum termfont nextf; /* building next font here */
70 size_t scale; /* font scaling factor */
71 size_t pages; /* number of pages shown */
72 size_t lineheight; /* line height (AFM units) */
73 size_t top; /* body top (AFM units) */
74 size_t bottom; /* body bottom (AFM units) */
75 size_t height; /* page height (AFM units */
76 size_t width; /* page width (AFM units) */
77 size_t lastwidth; /* page width before last ll */
78 size_t left; /* body left (AFM units) */
79 size_t header; /* header pos (AFM units) */
80 size_t footer; /* footer pos (AFM units) */
81 size_t pdfbytes; /* current output byte */
82 size_t pdflastpg; /* byte of last page mark */
83 size_t pdfbody; /* start of body object */
84 size_t *pdfobjs; /* table of object offsets */
85 size_t pdfobjsz; /* size of pdfobjs */
86 };
87
88 static double ps_hspan(const struct termp *,
89 const struct roffsu *);
90 static size_t ps_width(const struct termp *, int);
91 static void ps_advance(struct termp *, size_t);
92 static void ps_begin(struct termp *);
93 static void ps_closepage(struct termp *);
94 static void ps_end(struct termp *);
95 static void ps_endline(struct termp *);
96 static void ps_fclose(struct termp *);
97 static void ps_growbuf(struct termp *, size_t);
98 static void ps_letter(struct termp *, int);
99 static void ps_pclose(struct termp *);
100 static void ps_pletter(struct termp *, int);
101 #if __GNUC__ - 0 >= 4
102 __attribute__((__format__ (__printf__, 2, 3)))
103 #endif
104 static void ps_printf(struct termp *, const char *, ...);
105 static void ps_putchar(struct termp *, char);
106 static void ps_setfont(struct termp *, enum termfont);
107 static void ps_setwidth(struct termp *, int, size_t);
108 static struct termp *pspdf_alloc(const struct mchars *, char *);
109 static void pdf_obj(struct termp *, size_t);
110
111 /*
112 * We define, for the time being, three fonts: bold, oblique/italic, and
113 * normal (roman). The following table hard-codes the font metrics for
114 * ASCII, i.e., 32--127.
115 */
116
117 static const struct font fonts[TERMFONT__MAX] = {
118 { "Times-Roman", {
119 { 250 },
120 { 333 },
121 { 408 },
122 { 500 },
123 { 500 },
124 { 833 },
125 { 778 },
126 { 333 },
127 { 333 },
128 { 333 },
129 { 500 },
130 { 564 },
131 { 250 },
132 { 333 },
133 { 250 },
134 { 278 },
135 { 500 },
136 { 500 },
137 { 500 },
138 { 500 },
139 { 500 },
140 { 500 },
141 { 500 },
142 { 500 },
143 { 500 },
144 { 500 },
145 { 278 },
146 { 278 },
147 { 564 },
148 { 564 },
149 { 564 },
150 { 444 },
151 { 921 },
152 { 722 },
153 { 667 },
154 { 667 },
155 { 722 },
156 { 611 },
157 { 556 },
158 { 722 },
159 { 722 },
160 { 333 },
161 { 389 },
162 { 722 },
163 { 611 },
164 { 889 },
165 { 722 },
166 { 722 },
167 { 556 },
168 { 722 },
169 { 667 },
170 { 556 },
171 { 611 },
172 { 722 },
173 { 722 },
174 { 944 },
175 { 722 },
176 { 722 },
177 { 611 },
178 { 333 },
179 { 278 },
180 { 333 },
181 { 469 },
182 { 500 },
183 { 333 },
184 { 444 },
185 { 500 },
186 { 444 },
187 { 500},
188 { 444},
189 { 333},
190 { 500},
191 { 500},
192 { 278},
193 { 278},
194 { 500},
195 { 278},
196 { 778},
197 { 500},
198 { 500},
199 { 500},
200 { 500},
201 { 333},
202 { 389},
203 { 278},
204 { 500},
205 { 500},
206 { 722},
207 { 500},
208 { 500},
209 { 444},
210 { 480},
211 { 200},
212 { 480},
213 { 541},
214 } },
215 { "Times-Bold", {
216 { 250 },
217 { 333 },
218 { 555 },
219 { 500 },
220 { 500 },
221 { 1000 },
222 { 833 },
223 { 333 },
224 { 333 },
225 { 333 },
226 { 500 },
227 { 570 },
228 { 250 },
229 { 333 },
230 { 250 },
231 { 278 },
232 { 500 },
233 { 500 },
234 { 500 },
235 { 500 },
236 { 500 },
237 { 500 },
238 { 500 },
239 { 500 },
240 { 500 },
241 { 500 },
242 { 333 },
243 { 333 },
244 { 570 },
245 { 570 },
246 { 570 },
247 { 500 },
248 { 930 },
249 { 722 },
250 { 667 },
251 { 722 },
252 { 722 },
253 { 667 },
254 { 611 },
255 { 778 },
256 { 778 },
257 { 389 },
258 { 500 },
259 { 778 },
260 { 667 },
261 { 944 },
262 { 722 },
263 { 778 },
264 { 611 },
265 { 778 },
266 { 722 },
267 { 556 },
268 { 667 },
269 { 722 },
270 { 722 },
271 { 1000 },
272 { 722 },
273 { 722 },
274 { 667 },
275 { 333 },
276 { 278 },
277 { 333 },
278 { 581 },
279 { 500 },
280 { 333 },
281 { 500 },
282 { 556 },
283 { 444 },
284 { 556 },
285 { 444 },
286 { 333 },
287 { 500 },
288 { 556 },
289 { 278 },
290 { 333 },
291 { 556 },
292 { 278 },
293 { 833 },
294 { 556 },
295 { 500 },
296 { 556 },
297 { 556 },
298 { 444 },
299 { 389 },
300 { 333 },
301 { 556 },
302 { 500 },
303 { 722 },
304 { 500 },
305 { 500 },
306 { 444 },
307 { 394 },
308 { 220 },
309 { 394 },
310 { 520 },
311 } },
312 { "Times-Italic", {
313 { 250 },
314 { 333 },
315 { 420 },
316 { 500 },
317 { 500 },
318 { 833 },
319 { 778 },
320 { 333 },
321 { 333 },
322 { 333 },
323 { 500 },
324 { 675 },
325 { 250 },
326 { 333 },
327 { 250 },
328 { 278 },
329 { 500 },
330 { 500 },
331 { 500 },
332 { 500 },
333 { 500 },
334 { 500 },
335 { 500 },
336 { 500 },
337 { 500 },
338 { 500 },
339 { 333 },
340 { 333 },
341 { 675 },
342 { 675 },
343 { 675 },
344 { 500 },
345 { 920 },
346 { 611 },
347 { 611 },
348 { 667 },
349 { 722 },
350 { 611 },
351 { 611 },
352 { 722 },
353 { 722 },
354 { 333 },
355 { 444 },
356 { 667 },
357 { 556 },
358 { 833 },
359 { 667 },
360 { 722 },
361 { 611 },
362 { 722 },
363 { 611 },
364 { 500 },
365 { 556 },
366 { 722 },
367 { 611 },
368 { 833 },
369 { 611 },
370 { 556 },
371 { 556 },
372 { 389 },
373 { 278 },
374 { 389 },
375 { 422 },
376 { 500 },
377 { 333 },
378 { 500 },
379 { 500 },
380 { 444 },
381 { 500 },
382 { 444 },
383 { 278 },
384 { 500 },
385 { 500 },
386 { 278 },
387 { 278 },
388 { 444 },
389 { 278 },
390 { 722 },
391 { 500 },
392 { 500 },
393 { 500 },
394 { 500 },
395 { 389 },
396 { 389 },
397 { 278 },
398 { 500 },
399 { 444 },
400 { 667 },
401 { 444 },
402 { 444 },
403 { 389 },
404 { 400 },
405 { 275 },
406 { 400 },
407 { 541 },
408 } },
409 { "Times-BoldItalic", {
410 { 250 },
411 { 389 },
412 { 555 },
413 { 500 },
414 { 500 },
415 { 833 },
416 { 778 },
417 { 333 },
418 { 333 },
419 { 333 },
420 { 500 },
421 { 570 },
422 { 250 },
423 { 333 },
424 { 250 },
425 { 278 },
426 { 500 },
427 { 500 },
428 { 500 },
429 { 500 },
430 { 500 },
431 { 500 },
432 { 500 },
433 { 500 },
434 { 500 },
435 { 500 },
436 { 333 },
437 { 333 },
438 { 570 },
439 { 570 },
440 { 570 },
441 { 500 },
442 { 832 },
443 { 667 },
444 { 667 },
445 { 667 },
446 { 722 },
447 { 667 },
448 { 667 },
449 { 722 },
450 { 778 },
451 { 389 },
452 { 500 },
453 { 667 },
454 { 611 },
455 { 889 },
456 { 722 },
457 { 722 },
458 { 611 },
459 { 722 },
460 { 667 },
461 { 556 },
462 { 611 },
463 { 722 },
464 { 667 },
465 { 889 },
466 { 667 },
467 { 611 },
468 { 611 },
469 { 333 },
470 { 278 },
471 { 333 },
472 { 570 },
473 { 500 },
474 { 333 },
475 { 500 },
476 { 500 },
477 { 444 },
478 { 500 },
479 { 444 },
480 { 333 },
481 { 500 },
482 { 556 },
483 { 278 },
484 { 278 },
485 { 500 },
486 { 278 },
487 { 778 },
488 { 556 },
489 { 500 },
490 { 500 },
491 { 500 },
492 { 389 },
493 { 389 },
494 { 278 },
495 { 556 },
496 { 444 },
497 { 667 },
498 { 500 },
499 { 444 },
500 { 389 },
501 { 348 },
502 { 220 },
503 { 348 },
504 { 570 },
505 } },
506 };
507
508 void *
509 pdf_alloc(const struct mchars *mchars, char *outopts)
510 {
511 struct termp *p;
512
513 if (NULL != (p = pspdf_alloc(mchars, outopts)))
514 p->type = TERMTYPE_PDF;
515
516 return(p);
517 }
518
519 void *
520 ps_alloc(const struct mchars *mchars, char *outopts)
521 {
522 struct termp *p;
523
524 if (NULL != (p = pspdf_alloc(mchars, outopts)))
525 p->type = TERMTYPE_PS;
526
527 return(p);
528 }
529
530 static struct termp *
531 pspdf_alloc(const struct mchars *mchars, char *outopts)
532 {
533 struct termp *p;
534 unsigned int pagex, pagey;
535 size_t marginx, marginy, lineheight;
536 const char *toks[2];
537 const char *pp;
538 char *v;
539
540 p = mandoc_calloc(1, sizeof(struct termp));
541 p->symtab = mchars;
542 p->enc = TERMENC_ASCII;
543 p->fontq = mandoc_reallocarray(NULL,
544 (p->fontsz = 8), sizeof(enum termfont));
545 p->fontq[0] = p->fontl = TERMFONT_NONE;
546 p->ps = mandoc_calloc(1, sizeof(struct termp_ps));
547
548 p->advance = ps_advance;
549 p->begin = ps_begin;
550 p->end = ps_end;
551 p->endline = ps_endline;
552 p->hspan = ps_hspan;
553 p->letter = ps_letter;
554 p->setwidth = ps_setwidth;
555 p->width = ps_width;
556
557 toks[0] = "paper";
558 toks[1] = NULL;
559
560 pp = NULL;
561
562 while (outopts && *outopts)
563 switch (getsubopt(&outopts, UNCONST(toks), &v)) {
564 case 0:
565 pp = v;
566 break;
567 default:
568 break;
569 }
570
571 /* Default to US letter (millimetres). */
572
573 pagex = 216;
574 pagey = 279;
575
576 /*
577 * The ISO-269 paper sizes can be calculated automatically, but
578 * it would require bringing in -lm for pow() and I'd rather not
579 * do that. So just do it the easy way for now. Since this
580 * only happens once, I'm not terribly concerned.
581 */
582
583 if (pp && strcasecmp(pp, "letter")) {
584 if (0 == strcasecmp(pp, "a3")) {
585 pagex = 297;
586 pagey = 420;
587 } else if (0 == strcasecmp(pp, "a4")) {
588 pagex = 210;
589 pagey = 297;
590 } else if (0 == strcasecmp(pp, "a5")) {
591 pagex = 148;
592 pagey = 210;
593 } else if (0 == strcasecmp(pp, "legal")) {
594 pagex = 216;
595 pagey = 356;
596 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey))
597 fprintf(stderr, "%s: Unknown paper\n", pp);
598 }
599
600 /*
601 * This MUST be defined before any PNT2AFM or AFM2PNT
602 * calculations occur.
603 */
604
605 p->ps->scale = 11;
606
607 /* Remember millimetres -> AFM units. */
608
609 pagex = PNT2AFM(p, ((double)pagex * 2.834));
610 pagey = PNT2AFM(p, ((double)pagey * 2.834));
611
612 /* Margins are 1/9 the page x and y. */
613
614 marginx = (size_t)((double)pagex / 9.0);
615 marginy = (size_t)((double)pagey / 9.0);
616
617 /* Line-height is 1.4em. */
618
619 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
620
621 p->ps->width = p->ps->lastwidth = (size_t)pagex;
622 p->ps->height = (size_t)pagey;
623 p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
624 p->ps->top = pagey - marginy;
625 p->ps->footer = (marginy / 2) - (lineheight / 2);
626 p->ps->bottom = marginy;
627 p->ps->left = marginx;
628 p->ps->lineheight = lineheight;
629
630 p->defrmargin = pagex - (marginx * 2);
631 return(p);
632 }
633
634 static void
635 ps_setwidth(struct termp *p, int iop, size_t width)
636 {
637 size_t lastwidth;
638
639 lastwidth = p->ps->width;
640 if (iop > 0)
641 p->ps->width += width;
642 else if (iop == 0)
643 p->ps->width = width ? width : p->ps->lastwidth;
644 else if (p->ps->width > width)
645 p->ps->width -= width;
646 else
647 p->ps->width = 0;
648 p->ps->lastwidth = lastwidth;
649 }
650
651 void
652 pspdf_free(void *arg)
653 {
654 struct termp *p;
655
656 p = (struct termp *)arg;
657
658 if (p->ps->psmarg)
659 free(p->ps->psmarg);
660 if (p->ps->pdfobjs)
661 free(p->ps->pdfobjs);
662
663 free(p->ps);
664 term_free(p);
665 }
666
667 static void
668 ps_printf(struct termp *p, const char *fmt, ...)
669 {
670 va_list ap;
671 int pos, len;
672
673 va_start(ap, fmt);
674
675 /*
676 * If we're running in regular mode, then pipe directly into
677 * vprintf(). If we're processing margins, then push the data
678 * into our growable margin buffer.
679 */
680
681 if ( ! (PS_MARGINS & p->ps->flags)) {
682 len = vprintf(fmt, ap);
683 va_end(ap);
684 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len;
685 return;
686 }
687
688 /*
689 * XXX: I assume that the in-margin print won't exceed
690 * PS_BUFSLOP (128 bytes), which is reasonable but still an
691 * assumption that will cause pukeage if it's not the case.
692 */
693
694 ps_growbuf(p, PS_BUFSLOP);
695
696 pos = (int)p->ps->psmargcur;
697 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap);
698
699 va_end(ap);
700
701 p->ps->psmargcur = strlen(p->ps->psmarg);
702 }
703
704 static void
705 ps_putchar(struct termp *p, char c)
706 {
707 int pos;
708
709 /* See ps_printf(). */
710
711 if ( ! (PS_MARGINS & p->ps->flags)) {
712 putchar(c);
713 p->ps->pdfbytes++;
714 return;
715 }
716
717 ps_growbuf(p, 2);
718
719 pos = (int)p->ps->psmargcur++;
720 p->ps->psmarg[pos++] = c;
721 p->ps->psmarg[pos] = '\0';
722 }
723
724 static void
725 pdf_obj(struct termp *p, size_t obj)
726 {
727
728 assert(obj > 0);
729
730 if ((obj - 1) >= p->ps->pdfobjsz) {
731 p->ps->pdfobjsz = obj + 128;
732 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs,
733 p->ps->pdfobjsz, sizeof(size_t));
734 }
735
736 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes;
737 ps_printf(p, "%zu 0 obj\n", obj);
738 }
739
740 static void
741 ps_closepage(struct termp *p)
742 {
743 int i;
744 size_t len, base;
745
746 /*
747 * Close out a page that we've already flushed to output. In
748 * PostScript, we simply note that the page must be showed. In
749 * PDF, we must now create the Length, Resource, and Page node
750 * for the page contents.
751 */
752
753 assert(p->ps->psmarg && p->ps->psmarg[0]);
754 ps_printf(p, "%s", p->ps->psmarg);
755
756 if (TERMTYPE_PS != p->type) {
757 ps_printf(p, "ET\n");
758
759 len = p->ps->pdfbytes - p->ps->pdflastpg;
760 base = p->ps->pages * 4 + p->ps->pdfbody;
761
762 ps_printf(p, "endstream\nendobj\n");
763
764 /* Length of content. */
765 pdf_obj(p, base + 1);
766 ps_printf(p, "%zu\nendobj\n", len);
767
768 /* Resource for content. */
769 pdf_obj(p, base + 2);
770 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
771 ps_printf(p, "/Font <<\n");
772 for (i = 0; i < (int)TERMFONT__MAX; i++)
773 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
774 ps_printf(p, ">>\n>>\n");
775
776 /* Page node. */
777 pdf_obj(p, base + 3);
778 ps_printf(p, "<<\n");
779 ps_printf(p, "/Type /Page\n");
780 ps_printf(p, "/Parent 2 0 R\n");
781 ps_printf(p, "/Resources %zu 0 R\n", base + 2);
782 ps_printf(p, "/Contents %zu 0 R\n", base);
783 ps_printf(p, ">>\nendobj\n");
784 } else
785 ps_printf(p, "showpage\n");
786
787 p->ps->pages++;
788 p->ps->psrow = p->ps->top;
789 assert( ! (PS_NEWPAGE & p->ps->flags));
790 p->ps->flags |= PS_NEWPAGE;
791 }
792
793 static void
794 ps_end(struct termp *p)
795 {
796 size_t i, xref, base;
797
798 /*
799 * At the end of the file, do one last showpage. This is the
800 * same behaviour as groff(1) and works for multiple pages as
801 * well as just one.
802 */
803
804 if ( ! (PS_NEWPAGE & p->ps->flags)) {
805 assert(0 == p->ps->flags);
806 assert('\0' == p->ps->last);
807 ps_closepage(p);
808 }
809
810 if (TERMTYPE_PS == p->type) {
811 ps_printf(p, "%%%%Trailer\n");
812 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages);
813 ps_printf(p, "%%%%EOF\n");
814 return;
815 }
816
817 pdf_obj(p, 2);
818 ps_printf(p, "<<\n/Type /Pages\n");
819 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n",
820 (size_t)AFM2PNT(p, p->ps->width),
821 (size_t)AFM2PNT(p, p->ps->height));
822
823 ps_printf(p, "/Count %zu\n", p->ps->pages);
824 ps_printf(p, "/Kids [");
825
826 for (i = 0; i < p->ps->pages; i++)
827 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3);
828
829 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4;
830
831 ps_printf(p, "]\n>>\nendobj\n");
832 pdf_obj(p, base);
833 ps_printf(p, "<<\n");
834 ps_printf(p, "/Type /Catalog\n");
835 ps_printf(p, "/Pages 2 0 R\n");
836 ps_printf(p, ">>\n");
837 xref = p->ps->pdfbytes;
838 ps_printf(p, "xref\n");
839 ps_printf(p, "0 %zu\n", base + 1);
840 ps_printf(p, "0000000000 65535 f \n");
841
842 for (i = 0; i < base; i++)
843 ps_printf(p, "%.10zu 00000 n \n",
844 p->ps->pdfobjs[(int)i]);
845
846 ps_printf(p, "trailer\n");
847 ps_printf(p, "<<\n");
848 ps_printf(p, "/Size %zu\n", base + 1);
849 ps_printf(p, "/Root %zu 0 R\n", base);
850 ps_printf(p, "/Info 1 0 R\n");
851 ps_printf(p, ">>\n");
852 ps_printf(p, "startxref\n");
853 ps_printf(p, "%zu\n", xref);
854 ps_printf(p, "%%%%EOF\n");
855 }
856
857 static void
858 ps_begin(struct termp *p)
859 {
860 int i;
861
862 /*
863 * Print margins into margin buffer. Nothing gets output to the
864 * screen yet, so we don't need to initialise the primary state.
865 */
866
867 if (p->ps->psmarg) {
868 assert(p->ps->psmargsz);
869 p->ps->psmarg[0] = '\0';
870 }
871
872 /*p->ps->pdfbytes = 0;*/
873 p->ps->psmargcur = 0;
874 p->ps->flags = PS_MARGINS;
875 p->ps->pscol = p->ps->left;
876 p->ps->psrow = p->ps->header;
877
878 ps_setfont(p, TERMFONT_NONE);
879
880 (*p->headf)(p, p->argf);
881 (*p->endline)(p);
882
883 p->ps->pscol = p->ps->left;
884 p->ps->psrow = p->ps->footer;
885
886 (*p->footf)(p, p->argf);
887 (*p->endline)(p);
888
889 p->ps->flags &= ~PS_MARGINS;
890
891 assert(0 == p->ps->flags);
892 assert(p->ps->psmarg);
893 assert('\0' != p->ps->psmarg[0]);
894
895 /*
896 * Print header and initialise page state. Following this,
897 * stuff gets printed to the screen, so make sure we're sane.
898 */
899
900 if (TERMTYPE_PS == p->type) {
901 ps_printf(p, "%%!PS-Adobe-3.0\n");
902 ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
903 ps_printf(p, "%%%%Orientation: Portrait\n");
904 ps_printf(p, "%%%%Pages: (atend)\n");
905 ps_printf(p, "%%%%PageOrder: Ascend\n");
906 ps_printf(p, "%%%%DocumentMedia: "
907 "Default %zu %zu 0 () ()\n",
908 (size_t)AFM2PNT(p, p->ps->width),
909 (size_t)AFM2PNT(p, p->ps->height));
910 ps_printf(p, "%%%%DocumentNeededResources: font");
911
912 for (i = 0; i < (int)TERMFONT__MAX; i++)
913 ps_printf(p, " %s", fonts[i].name);
914
915 ps_printf(p, "\n%%%%EndComments\n");
916 } else {
917 ps_printf(p, "%%PDF-1.1\n");
918 pdf_obj(p, 1);
919 ps_printf(p, "<<\n");
920 ps_printf(p, ">>\n");
921 ps_printf(p, "endobj\n");
922
923 for (i = 0; i < (int)TERMFONT__MAX; i++) {
924 pdf_obj(p, (size_t)i + 3);
925 ps_printf(p, "<<\n");
926 ps_printf(p, "/Type /Font\n");
927 ps_printf(p, "/Subtype /Type1\n");
928 ps_printf(p, "/Name /F%d\n", i);
929 ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
930 ps_printf(p, ">>\n");
931 }
932 }
933
934 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3;
935 p->ps->pscol = p->ps->left;
936 p->ps->psrow = p->ps->top;
937 p->ps->flags |= PS_NEWPAGE;
938 ps_setfont(p, TERMFONT_NONE);
939 }
940
941 static void
942 ps_pletter(struct termp *p, int c)
943 {
944 int f;
945
946 /*
947 * If we haven't opened a page context, then output that we're
948 * in a new page and make sure the font is correctly set.
949 */
950
951 if (PS_NEWPAGE & p->ps->flags) {
952 if (TERMTYPE_PS == p->type) {
953 ps_printf(p, "%%%%Page: %zu %zu\n",
954 p->ps->pages + 1, p->ps->pages + 1);
955 ps_printf(p, "/%s %zu selectfont\n",
956 fonts[(int)p->ps->lastf].name,
957 p->ps->scale);
958 } else {
959 pdf_obj(p, p->ps->pdfbody +
960 p->ps->pages * 4);
961 ps_printf(p, "<<\n");
962 ps_printf(p, "/Length %zu 0 R\n",
963 p->ps->pdfbody + 1 + p->ps->pages * 4);
964 ps_printf(p, ">>\nstream\n");
965 }
966 p->ps->pdflastpg = p->ps->pdfbytes;
967 p->ps->flags &= ~PS_NEWPAGE;
968 }
969
970 /*
971 * If we're not in a PostScript "word" context, then open one
972 * now at the current cursor.
973 */
974
975 if ( ! (PS_INLINE & p->ps->flags)) {
976 if (TERMTYPE_PS != p->type) {
977 ps_printf(p, "BT\n/F%d %zu Tf\n",
978 (int)p->ps->lastf, p->ps->scale);
979 ps_printf(p, "%.3f %.3f Td\n(",
980 AFM2PNT(p, p->ps->pscol),
981 AFM2PNT(p, p->ps->psrow));
982 } else
983 ps_printf(p, "%.3f %.3f moveto\n(",
984 AFM2PNT(p, p->ps->pscol),
985 AFM2PNT(p, p->ps->psrow));
986 p->ps->flags |= PS_INLINE;
987 }
988
989 assert( ! (PS_NEWPAGE & p->ps->flags));
990
991 /*
992 * We need to escape these characters as per the PostScript
993 * specification. We would also escape non-graphable characters
994 * (like tabs), but none of them would get to this point and
995 * it's superfluous to abort() on them.
996 */
997
998 switch (c) {
999 case '(':
1000 /* FALLTHROUGH */
1001 case ')':
1002 /* FALLTHROUGH */
1003 case '\\':
1004 ps_putchar(p, '\\');
1005 break;
1006 default:
1007 break;
1008 }
1009
1010 /* Write the character and adjust where we are on the page. */
1011
1012 f = (int)p->ps->lastf;
1013
1014 if (c <= 32 || c - 32 >= MAXCHAR)
1015 c = 32;
1016
1017 ps_putchar(p, (char)c);
1018 c -= 32;
1019 p->ps->pscol += (size_t)fonts[f].gly[c].wx;
1020 }
1021
1022 static void
1023 ps_pclose(struct termp *p)
1024 {
1025
1026 /*
1027 * Spit out that we're exiting a word context (this is a
1028 * "partial close" because we don't check the last-char buffer
1029 * or anything).
1030 */
1031
1032 if ( ! (PS_INLINE & p->ps->flags))
1033 return;
1034
1035 if (TERMTYPE_PS != p->type) {
1036 ps_printf(p, ") Tj\nET\n");
1037 } else
1038 ps_printf(p, ") show\n");
1039
1040 p->ps->flags &= ~PS_INLINE;
1041 }
1042
1043 static void
1044 ps_fclose(struct termp *p)
1045 {
1046
1047 /*
1048 * Strong closure: if we have a last-char, spit it out after
1049 * checking that we're in the right font mode. This will of
1050 * course open a new scope, if applicable.
1051 *
1052 * Following this, close out any scope that's open.
1053 */
1054
1055 if (p->ps->last != '\0') {
1056 assert( ! (p->ps->flags & PS_BACKSP));
1057 if (p->ps->nextf != p->ps->lastf) {
1058 ps_pclose(p);
1059 ps_setfont(p, p->ps->nextf);
1060 }
1061 p->ps->nextf = TERMFONT_NONE;
1062 ps_pletter(p, p->ps->last);
1063 p->ps->last = '\0';
1064 }
1065
1066 if ( ! (PS_INLINE & p->ps->flags))
1067 return;
1068
1069 ps_pclose(p);
1070 }
1071
1072 static void
1073 ps_letter(struct termp *p, int arg)
1074 {
1075 size_t savecol;
1076 char c;
1077
1078 c = arg >= 128 || arg <= 0 ? '?' : arg;
1079
1080 /*
1081 * When receiving a backspace, merely flag it.
1082 * We don't know yet whether it is
1083 * a font instruction or an overstrike.
1084 */
1085
1086 if (c == '\b') {
1087 assert(p->ps->last != '\0');
1088 assert( ! (p->ps->flags & PS_BACKSP));
1089 p->ps->flags |= PS_BACKSP;
1090 return;
1091 }
1092
1093 /*
1094 * Decode font instructions.
1095 */
1096
1097 if (p->ps->flags & PS_BACKSP) {
1098 if (p->ps->last == '_') {
1099 switch (p->ps->nextf) {
1100 case TERMFONT_BI:
1101 break;
1102 case TERMFONT_BOLD:
1103 p->ps->nextf = TERMFONT_BI;
1104 break;
1105 default:
1106 p->ps->nextf = TERMFONT_UNDER;
1107 }
1108 p->ps->last = c;
1109 p->ps->flags &= ~PS_BACKSP;
1110 return;
1111 }
1112 if (p->ps->last == c) {
1113 switch (p->ps->nextf) {
1114 case TERMFONT_BI:
1115 break;
1116 case TERMFONT_UNDER:
1117 p->ps->nextf = TERMFONT_BI;
1118 break;
1119 default:
1120 p->ps->nextf = TERMFONT_BOLD;
1121 }
1122 p->ps->flags &= ~PS_BACKSP;
1123 return;
1124 }
1125
1126 /*
1127 * This is not a font instruction, but rather
1128 * the next character. Prepare for overstrike.
1129 */
1130
1131 savecol = p->ps->pscol;
1132 } else
1133 savecol = SIZE_MAX;
1134
1135 /*
1136 * We found the next character, so the font instructions
1137 * for the previous one are complete.
1138 * Use them and print it.
1139 */
1140
1141 if (p->ps->last != '\0') {
1142 if (p->ps->nextf != p->ps->lastf) {
1143 ps_pclose(p);
1144 ps_setfont(p, p->ps->nextf);
1145 }
1146 p->ps->nextf = TERMFONT_NONE;
1147 ps_pletter(p, p->ps->last);
1148 }
1149
1150 /*
1151 * Do not print the current character yet because font
1152 * instructions might follow; only remember it.
1153 * For the first character, nothing else is done.
1154 * The final character will get printed from ps_fclose().
1155 */
1156
1157 p->ps->last = c;
1158
1159 /*
1160 * For an overstrike, back up to the previous position.
1161 */
1162
1163 if (savecol != SIZE_MAX) {
1164 ps_pclose(p);
1165 p->ps->pscol = savecol;
1166 p->ps->flags &= ~PS_BACKSP;
1167 }
1168 }
1169
1170 static void
1171 ps_advance(struct termp *p, size_t len)
1172 {
1173
1174 /*
1175 * Advance some spaces. This can probably be made smarter,
1176 * i.e., to have multiple space-separated words in the same
1177 * scope, but this is easier: just close out the current scope
1178 * and readjust our column settings.
1179 */
1180
1181 ps_fclose(p);
1182 p->ps->pscol += len;
1183 }
1184
1185 static void
1186 ps_endline(struct termp *p)
1187 {
1188
1189 /* Close out any scopes we have open: we're at eoln. */
1190
1191 ps_fclose(p);
1192
1193 /*
1194 * If we're in the margin, don't try to recalculate our current
1195 * row. XXX: if the column tries to be fancy with multiple
1196 * lines, we'll do nasty stuff.
1197 */
1198
1199 if (PS_MARGINS & p->ps->flags)
1200 return;
1201
1202 /* Left-justify. */
1203
1204 p->ps->pscol = p->ps->left;
1205
1206 /* If we haven't printed anything, return. */
1207
1208 if (PS_NEWPAGE & p->ps->flags)
1209 return;
1210
1211 /*
1212 * Put us down a line. If we're at the page bottom, spit out a
1213 * showpage and restart our row.
1214 */
1215
1216 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) {
1217 p->ps->psrow -= p->ps->lineheight;
1218 return;
1219 }
1220
1221 ps_closepage(p);
1222 }
1223
1224 static void
1225 ps_setfont(struct termp *p, enum termfont f)
1226 {
1227
1228 assert(f < TERMFONT__MAX);
1229 p->ps->lastf = f;
1230
1231 /*
1232 * If we're still at the top of the page, let the font-setting
1233 * be delayed until we actually have stuff to print.
1234 */
1235
1236 if (PS_NEWPAGE & p->ps->flags)
1237 return;
1238
1239 if (TERMTYPE_PS == p->type)
1240 ps_printf(p, "/%s %zu selectfont\n",
1241 fonts[(int)f].name, p->ps->scale);
1242 else
1243 ps_printf(p, "/F%d %zu Tf\n",
1244 (int)f, p->ps->scale);
1245 }
1246
1247 static size_t
1248 ps_width(const struct termp *p, int c)
1249 {
1250
1251 if (c <= 32 || c - 32 >= MAXCHAR)
1252 c = 0;
1253 else
1254 c -= 32;
1255
1256 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx);
1257 }
1258
1259 static double
1260 ps_hspan(const struct termp *p, const struct roffsu *su)
1261 {
1262 double r;
1263
1264 /*
1265 * All of these measurements are derived by converting from the
1266 * native measurement to AFM units.
1267 */
1268 switch (su->unit) {
1269 case SCALE_BU:
1270 /*
1271 * Traditionally, the default unit is fixed to the
1272 * output media. So this would refer to the point. In
1273 * mandoc(1), however, we stick to the default terminal
1274 * scaling unit so that output is the same regardless
1275 * the media.
1276 */
1277 r = PNT2AFM(p, su->scale * 72.0 / 240.0);
1278 break;
1279 case SCALE_CM:
1280 r = PNT2AFM(p, su->scale * 72.0 / 2.54);
1281 break;
1282 case SCALE_EM:
1283 r = su->scale *
1284 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
1285 break;
1286 case SCALE_EN:
1287 r = su->scale *
1288 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
1289 break;
1290 case SCALE_IN:
1291 r = PNT2AFM(p, su->scale * 72.0);
1292 break;
1293 case SCALE_MM:
1294 r = su->scale *
1295 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0;
1296 break;
1297 case SCALE_PC:
1298 r = PNT2AFM(p, su->scale * 12.0);
1299 break;
1300 case SCALE_PT:
1301 r = PNT2AFM(p, su->scale * 1.0);
1302 break;
1303 case SCALE_VS:
1304 r = su->scale * p->ps->lineheight;
1305 break;
1306 default:
1307 r = su->scale;
1308 break;
1309 }
1310
1311 return(r);
1312 }
1313
1314 static void
1315 ps_growbuf(struct termp *p, size_t sz)
1316 {
1317 if (p->ps->psmargcur + sz <= p->ps->psmargsz)
1318 return;
1319
1320 if (sz < PS_BUFSLOP)
1321 sz = PS_BUFSLOP;
1322
1323 p->ps->psmargsz += sz;
1324 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz);
1325 }
A git conversion mirror of mandoc.bsd.lv