1 /* Id: term_ps.c,v 1.55 2014/01/05 19:10:56 joerg Exp */
2 /*
3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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/types.h>
22
23 #include <assert.h>
24 #include <stdarg.h>
25 #include <stdint.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <time.h>
30 #include <unistd.h>
31
32 #include "mandoc.h"
33 #include "out.h"
34 #include "main.h"
35 #include "term.h"
36
37 /* These work the buffer used by the header and footer. */
38 #define PS_BUFSLOP 128
39
40 /* Convert PostScript point "x" to an AFM unit. */
41 #define PNT2AFM(p, x) /* LINTED */ \
42 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale))
43
44 /* Convert an AFM unit "x" to a PostScript points */
45 #define AFM2PNT(p, x) /* LINTED */ \
46 ((double)(x) / (1000.0 / (double)(p)->ps->scale))
47
48 struct glyph {
49 unsigned short wx; /* WX in AFM */
50 };
51
52 struct font {
53 const char *name; /* FontName in AFM */
54 #define MAXCHAR 95 /* total characters we can handle */
55 struct glyph gly[MAXCHAR]; /* glyph metrics */
56 };
57
58 struct termp_ps {
59 int flags;
60 #define PS_INLINE (1 << 0) /* we're in a word */
61 #define PS_MARGINS (1 << 1) /* we're in the margins */
62 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */
63 size_t pscol; /* visible column (AFM units) */
64 size_t psrow; /* visible row (AFM units) */
65 char *psmarg; /* margin buf */
66 size_t psmargsz; /* margin buf size */
67 size_t psmargcur; /* cur index in margin buf */
68 char last; /* character buffer */
69 enum termfont lastf; /* last set font */
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 left; /* body left (AFM units) */
78 size_t header; /* header pos (AFM units) */
79 size_t footer; /* footer pos (AFM units) */
80 size_t pdfbytes; /* current output byte */
81 size_t pdflastpg; /* byte of last page mark */
82 size_t pdfbody; /* start of body object */
83 size_t *pdfobjs; /* table of object offsets */
84 size_t pdfobjsz; /* size of pdfobjs */
85 };
86
87 static double ps_hspan(const struct termp *,
88 const struct roffsu *);
89 static size_t ps_width(const struct termp *, int);
90 static void ps_advance(struct termp *, size_t);
91 static void ps_begin(struct termp *);
92 static void ps_closepage(struct termp *);
93 static void ps_end(struct termp *);
94 static void ps_endline(struct termp *);
95 static void ps_fclose(struct termp *);
96 static void ps_growbuf(struct termp *, size_t);
97 static void ps_letter(struct termp *, int);
98 static void ps_pclose(struct termp *);
99 static void ps_pletter(struct termp *, int);
100 #if __GNUC__ - 0 >= 4
101 __attribute__((__format__ (__printf__, 2, 3)))
102 #endif
103 static void ps_printf(struct termp *, const char *, ...);
104 static void ps_putchar(struct termp *, char);
105 static void ps_setfont(struct termp *, enum termfont);
106 static struct termp *pspdf_alloc(char *);
107 static void pdf_obj(struct termp *, size_t);
108
109 /*
110 * We define, for the time being, three fonts: bold, oblique/italic, and
111 * normal (roman). The following table hard-codes the font metrics for
112 * ASCII, i.e., 32--127.
113 */
114
115 static const struct font fonts[TERMFONT__MAX] = {
116 { "Times-Roman", {
117 { 250 },
118 { 333 },
119 { 408 },
120 { 500 },
121 { 500 },
122 { 833 },
123 { 778 },
124 { 333 },
125 { 333 },
126 { 333 },
127 { 500 },
128 { 564 },
129 { 250 },
130 { 333 },
131 { 250 },
132 { 278 },
133 { 500 },
134 { 500 },
135 { 500 },
136 { 500 },
137 { 500 },
138 { 500 },
139 { 500 },
140 { 500 },
141 { 500 },
142 { 500 },
143 { 278 },
144 { 278 },
145 { 564 },
146 { 564 },
147 { 564 },
148 { 444 },
149 { 921 },
150 { 722 },
151 { 667 },
152 { 667 },
153 { 722 },
154 { 611 },
155 { 556 },
156 { 722 },
157 { 722 },
158 { 333 },
159 { 389 },
160 { 722 },
161 { 611 },
162 { 889 },
163 { 722 },
164 { 722 },
165 { 556 },
166 { 722 },
167 { 667 },
168 { 556 },
169 { 611 },
170 { 722 },
171 { 722 },
172 { 944 },
173 { 722 },
174 { 722 },
175 { 611 },
176 { 333 },
177 { 278 },
178 { 333 },
179 { 469 },
180 { 500 },
181 { 333 },
182 { 444 },
183 { 500 },
184 { 444 },
185 { 500},
186 { 444},
187 { 333},
188 { 500},
189 { 500},
190 { 278},
191 { 278},
192 { 500},
193 { 278},
194 { 778},
195 { 500},
196 { 500},
197 { 500},
198 { 500},
199 { 333},
200 { 389},
201 { 278},
202 { 500},
203 { 500},
204 { 722},
205 { 500},
206 { 500},
207 { 444},
208 { 480},
209 { 200},
210 { 480},
211 { 541},
212 } },
213 { "Times-Bold", {
214 { 250 },
215 { 333 },
216 { 555 },
217 { 500 },
218 { 500 },
219 { 1000 },
220 { 833 },
221 { 333 },
222 { 333 },
223 { 333 },
224 { 500 },
225 { 570 },
226 { 250 },
227 { 333 },
228 { 250 },
229 { 278 },
230 { 500 },
231 { 500 },
232 { 500 },
233 { 500 },
234 { 500 },
235 { 500 },
236 { 500 },
237 { 500 },
238 { 500 },
239 { 500 },
240 { 333 },
241 { 333 },
242 { 570 },
243 { 570 },
244 { 570 },
245 { 500 },
246 { 930 },
247 { 722 },
248 { 667 },
249 { 722 },
250 { 722 },
251 { 667 },
252 { 611 },
253 { 778 },
254 { 778 },
255 { 389 },
256 { 500 },
257 { 778 },
258 { 667 },
259 { 944 },
260 { 722 },
261 { 778 },
262 { 611 },
263 { 778 },
264 { 722 },
265 { 556 },
266 { 667 },
267 { 722 },
268 { 722 },
269 { 1000 },
270 { 722 },
271 { 722 },
272 { 667 },
273 { 333 },
274 { 278 },
275 { 333 },
276 { 581 },
277 { 500 },
278 { 333 },
279 { 500 },
280 { 556 },
281 { 444 },
282 { 556 },
283 { 444 },
284 { 333 },
285 { 500 },
286 { 556 },
287 { 278 },
288 { 333 },
289 { 556 },
290 { 278 },
291 { 833 },
292 { 556 },
293 { 500 },
294 { 556 },
295 { 556 },
296 { 444 },
297 { 389 },
298 { 333 },
299 { 556 },
300 { 500 },
301 { 722 },
302 { 500 },
303 { 500 },
304 { 444 },
305 { 394 },
306 { 220 },
307 { 394 },
308 { 520 },
309 } },
310 { "Times-Italic", {
311 { 250 },
312 { 333 },
313 { 420 },
314 { 500 },
315 { 500 },
316 { 833 },
317 { 778 },
318 { 333 },
319 { 333 },
320 { 333 },
321 { 500 },
322 { 675 },
323 { 250 },
324 { 333 },
325 { 250 },
326 { 278 },
327 { 500 },
328 { 500 },
329 { 500 },
330 { 500 },
331 { 500 },
332 { 500 },
333 { 500 },
334 { 500 },
335 { 500 },
336 { 500 },
337 { 333 },
338 { 333 },
339 { 675 },
340 { 675 },
341 { 675 },
342 { 500 },
343 { 920 },
344 { 611 },
345 { 611 },
346 { 667 },
347 { 722 },
348 { 611 },
349 { 611 },
350 { 722 },
351 { 722 },
352 { 333 },
353 { 444 },
354 { 667 },
355 { 556 },
356 { 833 },
357 { 667 },
358 { 722 },
359 { 611 },
360 { 722 },
361 { 611 },
362 { 500 },
363 { 556 },
364 { 722 },
365 { 611 },
366 { 833 },
367 { 611 },
368 { 556 },
369 { 556 },
370 { 389 },
371 { 278 },
372 { 389 },
373 { 422 },
374 { 500 },
375 { 333 },
376 { 500 },
377 { 500 },
378 { 444 },
379 { 500 },
380 { 444 },
381 { 278 },
382 { 500 },
383 { 500 },
384 { 278 },
385 { 278 },
386 { 444 },
387 { 278 },
388 { 722 },
389 { 500 },
390 { 500 },
391 { 500 },
392 { 500 },
393 { 389 },
394 { 389 },
395 { 278 },
396 { 500 },
397 { 444 },
398 { 667 },
399 { 444 },
400 { 444 },
401 { 389 },
402 { 400 },
403 { 275 },
404 { 400 },
405 { 541 },
406 } },
407 };
408
409 void *
pdf_alloc(char * outopts)410 pdf_alloc(char *outopts)
411 {
412 struct termp *p;
413
414 if (NULL != (p = pspdf_alloc(outopts)))
415 p->type = TERMTYPE_PDF;
416
417 return(p);
418 }
419
420 void *
ps_alloc(char * outopts)421 ps_alloc(char *outopts)
422 {
423 struct termp *p;
424
425 if (NULL != (p = pspdf_alloc(outopts)))
426 p->type = TERMTYPE_PS;
427
428 return(p);
429 }
430
431 static struct termp *
pspdf_alloc(char * outopts)432 pspdf_alloc(char *outopts)
433 {
434 struct termp *p;
435 unsigned int pagex, pagey;
436 size_t marginx, marginy, lineheight;
437 const char *toks[2];
438 const char *pp;
439 char *v;
440
441 p = mandoc_calloc(1, sizeof(struct termp));
442 p->enc = TERMENC_ASCII;
443 p->ps = mandoc_calloc(1, sizeof(struct termp_ps));
444
445 p->advance = ps_advance;
446 p->begin = ps_begin;
447 p->end = ps_end;
448 p->endline = ps_endline;
449 p->hspan = ps_hspan;
450 p->letter = ps_letter;
451 p->width = ps_width;
452
453 toks[0] = "paper";
454 toks[1] = NULL;
455
456 pp = NULL;
457
458 while (outopts && *outopts)
459 switch (getsubopt(&outopts, UNCONST(toks), &v)) {
460 case (0):
461 pp = v;
462 break;
463 default:
464 break;
465 }
466
467 /* Default to US letter (millimetres). */
468
469 pagex = 216;
470 pagey = 279;
471
472 /*
473 * The ISO-269 paper sizes can be calculated automatically, but
474 * it would require bringing in -lm for pow() and I'd rather not
475 * do that. So just do it the easy way for now. Since this
476 * only happens once, I'm not terribly concerned.
477 */
478
479 if (pp && strcasecmp(pp, "letter")) {
480 if (0 == strcasecmp(pp, "a3")) {
481 pagex = 297;
482 pagey = 420;
483 } else if (0 == strcasecmp(pp, "a4")) {
484 pagex = 210;
485 pagey = 297;
486 } else if (0 == strcasecmp(pp, "a5")) {
487 pagex = 148;
488 pagey = 210;
489 } else if (0 == strcasecmp(pp, "legal")) {
490 pagex = 216;
491 pagey = 356;
492 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey))
493 fprintf(stderr, "%s: Unknown paper\n", pp);
494 }
495
496 /*
497 * This MUST be defined before any PNT2AFM or AFM2PNT
498 * calculations occur.
499 */
500
501 p->ps->scale = 11;
502
503 /* Remember millimetres -> AFM units. */
504
505 pagex = PNT2AFM(p, ((double)pagex * 2.834));
506 pagey = PNT2AFM(p, ((double)pagey * 2.834));
507
508 /* Margins are 1/9 the page x and y. */
509
510 marginx = /* LINTED */
511 (size_t)((double)pagex / 9.0);
512 marginy = /* LINTED */
513 (size_t)((double)pagey / 9.0);
514
515 /* Line-height is 1.4em. */
516
517 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
518
519 p->ps->width = (size_t)pagex;
520 p->ps->height = (size_t)pagey;
521 p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
522 p->ps->top = pagey - marginy;
523 p->ps->footer = (marginy / 2) - (lineheight / 2);
524 p->ps->bottom = marginy;
525 p->ps->left = marginx;
526 p->ps->lineheight = lineheight;
527
528 p->defrmargin = pagex - (marginx * 2);
529 return(p);
530 }
531
532
533 void
pspdf_free(void * arg)534 pspdf_free(void *arg)
535 {
536 struct termp *p;
537
538 p = (struct termp *)arg;
539
540 if (p->ps->psmarg)
541 free(p->ps->psmarg);
542 if (p->ps->pdfobjs)
543 free(p->ps->pdfobjs);
544
545 free(p->ps);
546 term_free(p);
547 }
548
549
550 static void
ps_printf(struct termp * p,const char * fmt,...)551 ps_printf(struct termp *p, const char *fmt, ...)
552 {
553 va_list ap;
554 int pos, len;
555
556 va_start(ap, fmt);
557
558 /*
559 * If we're running in regular mode, then pipe directly into
560 * vprintf(). If we're processing margins, then push the data
561 * into our growable margin buffer.
562 */
563
564 if ( ! (PS_MARGINS & p->ps->flags)) {
565 len = vprintf(fmt, ap);
566 va_end(ap);
567 p->ps->pdfbytes += /* LINTED */
568 len < 0 ? 0 : (size_t)len;
569 return;
570 }
571
572 /*
573 * XXX: I assume that the in-margin print won't exceed
574 * PS_BUFSLOP (128 bytes), which is reasonable but still an
575 * assumption that will cause pukeage if it's not the case.
576 */
577
578 ps_growbuf(p, PS_BUFSLOP);
579
580 pos = (int)p->ps->psmargcur;
581 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap);
582
583 va_end(ap);
584
585 p->ps->psmargcur = strlen(p->ps->psmarg);
586 }
587
588
589 static void
ps_putchar(struct termp * p,char c)590 ps_putchar(struct termp *p, char c)
591 {
592 int pos;
593
594 /* See ps_printf(). */
595
596 if ( ! (PS_MARGINS & p->ps->flags)) {
597 /* LINTED */
598 putchar(c);
599 p->ps->pdfbytes++;
600 return;
601 }
602
603 ps_growbuf(p, 2);
604
605 pos = (int)p->ps->psmargcur++;
606 p->ps->psmarg[pos++] = c;
607 p->ps->psmarg[pos] = '\0';
608 }
609
610
611 static void
pdf_obj(struct termp * p,size_t obj)612 pdf_obj(struct termp *p, size_t obj)
613 {
614
615 assert(obj > 0);
616
617 if ((obj - 1) >= p->ps->pdfobjsz) {
618 p->ps->pdfobjsz = obj + 128;
619 p->ps->pdfobjs = realloc
620 (p->ps->pdfobjs,
621 p->ps->pdfobjsz * sizeof(size_t));
622 if (NULL == p->ps->pdfobjs) {
623 perror(NULL);
624 exit((int)MANDOCLEVEL_SYSERR);
625 }
626 }
627
628 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes;
629 ps_printf(p, "%zu 0 obj\n", obj);
630 }
631
632
633 static void
ps_closepage(struct termp * p)634 ps_closepage(struct termp *p)
635 {
636 int i;
637 size_t len, base;
638
639 /*
640 * Close out a page that we've already flushed to output. In
641 * PostScript, we simply note that the page must be showed. In
642 * PDF, we must now create the Length, Resource, and Page node
643 * for the page contents.
644 */
645
646 assert(p->ps->psmarg && p->ps->psmarg[0]);
647 ps_printf(p, "%s", p->ps->psmarg);
648
649 if (TERMTYPE_PS != p->type) {
650 ps_printf(p, "ET\n");
651
652 len = p->ps->pdfbytes - p->ps->pdflastpg;
653 base = p->ps->pages * 4 + p->ps->pdfbody;
654
655 ps_printf(p, "endstream\nendobj\n");
656
657 /* Length of content. */
658 pdf_obj(p, base + 1);
659 ps_printf(p, "%zu\nendobj\n", len);
660
661 /* Resource for content. */
662 pdf_obj(p, base + 2);
663 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
664 ps_printf(p, "/Font <<\n");
665 for (i = 0; i < (int)TERMFONT__MAX; i++)
666 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
667 ps_printf(p, ">>\n>>\n");
668
669 /* Page node. */
670 pdf_obj(p, base + 3);
671 ps_printf(p, "<<\n");
672 ps_printf(p, "/Type /Page\n");
673 ps_printf(p, "/Parent 2 0 R\n");
674 ps_printf(p, "/Resources %zu 0 R\n", base + 2);
675 ps_printf(p, "/Contents %zu 0 R\n", base);
676 ps_printf(p, ">>\nendobj\n");
677 } else
678 ps_printf(p, "showpage\n");
679
680 p->ps->pages++;
681 p->ps->psrow = p->ps->top;
682 assert( ! (PS_NEWPAGE & p->ps->flags));
683 p->ps->flags |= PS_NEWPAGE;
684 }
685
686
687 /* ARGSUSED */
688 static void
ps_end(struct termp * p)689 ps_end(struct termp *p)
690 {
691 size_t i, xref, base;
692
693 /*
694 * At the end of the file, do one last showpage. This is the
695 * same behaviour as groff(1) and works for multiple pages as
696 * well as just one.
697 */
698
699 if ( ! (PS_NEWPAGE & p->ps->flags)) {
700 assert(0 == p->ps->flags);
701 assert('\0' == p->ps->last);
702 ps_closepage(p);
703 }
704
705 if (TERMTYPE_PS == p->type) {
706 ps_printf(p, "%%%%Trailer\n");
707 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages);
708 ps_printf(p, "%%%%EOF\n");
709 return;
710 }
711
712 pdf_obj(p, 2);
713 ps_printf(p, "<<\n/Type /Pages\n");
714 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n",
715 (size_t)AFM2PNT(p, p->ps->width),
716 (size_t)AFM2PNT(p, p->ps->height));
717
718 ps_printf(p, "/Count %zu\n", p->ps->pages);
719 ps_printf(p, "/Kids [");
720
721 for (i = 0; i < p->ps->pages; i++)
722 ps_printf(p, " %zu 0 R", i * 4 +
723 p->ps->pdfbody + 3);
724
725 base = (p->ps->pages - 1) * 4 +
726 p->ps->pdfbody + 4;
727
728 ps_printf(p, "]\n>>\nendobj\n");
729 pdf_obj(p, base);
730 ps_printf(p, "<<\n");
731 ps_printf(p, "/Type /Catalog\n");
732 ps_printf(p, "/Pages 2 0 R\n");
733 ps_printf(p, ">>\n");
734 xref = p->ps->pdfbytes;
735 ps_printf(p, "xref\n");
736 ps_printf(p, "0 %zu\n", base + 1);
737 ps_printf(p, "0000000000 65535 f \n");
738
739 for (i = 0; i < base; i++)
740 ps_printf(p, "%.10zu 00000 n \n",
741 p->ps->pdfobjs[(int)i]);
742
743 ps_printf(p, "trailer\n");
744 ps_printf(p, "<<\n");
745 ps_printf(p, "/Size %zu\n", base + 1);
746 ps_printf(p, "/Root %zu 0 R\n", base);
747 ps_printf(p, "/Info 1 0 R\n");
748 ps_printf(p, ">>\n");
749 ps_printf(p, "startxref\n");
750 ps_printf(p, "%zu\n", xref);
751 ps_printf(p, "%%%%EOF\n");
752 }
753
754
755 static void
ps_begin(struct termp * p)756 ps_begin(struct termp *p)
757 {
758 time_t t;
759 int i;
760
761 /*
762 * Print margins into margin buffer. Nothing gets output to the
763 * screen yet, so we don't need to initialise the primary state.
764 */
765
766 if (p->ps->psmarg) {
767 assert(p->ps->psmargsz);
768 p->ps->psmarg[0] = '\0';
769 }
770
771 /*p->ps->pdfbytes = 0;*/
772 p->ps->psmargcur = 0;
773 p->ps->flags = PS_MARGINS;
774 p->ps->pscol = p->ps->left;
775 p->ps->psrow = p->ps->header;
776
777 ps_setfont(p, TERMFONT_NONE);
778
779 (*p->headf)(p, p->argf);
780 (*p->endline)(p);
781
782 p->ps->pscol = p->ps->left;
783 p->ps->psrow = p->ps->footer;
784
785 (*p->footf)(p, p->argf);
786 (*p->endline)(p);
787
788 p->ps->flags &= ~PS_MARGINS;
789
790 assert(0 == p->ps->flags);
791 assert(p->ps->psmarg);
792 assert('\0' != p->ps->psmarg[0]);
793
794 /*
795 * Print header and initialise page state. Following this,
796 * stuff gets printed to the screen, so make sure we're sane.
797 */
798
799 t = time(NULL);
800
801 if (TERMTYPE_PS == p->type) {
802 ps_printf(p, "%%!PS-Adobe-3.0\n");
803 ps_printf(p, "%%%%CreationDate: %s", ctime(&t));
804 ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
805 ps_printf(p, "%%%%Orientation: Portrait\n");
806 ps_printf(p, "%%%%Pages: (atend)\n");
807 ps_printf(p, "%%%%PageOrder: Ascend\n");
808 ps_printf(p, "%%%%DocumentMedia: "
809 "Default %zu %zu 0 () ()\n",
810 (size_t)AFM2PNT(p, p->ps->width),
811 (size_t)AFM2PNT(p, p->ps->height));
812 ps_printf(p, "%%%%DocumentNeededResources: font");
813
814 for (i = 0; i < (int)TERMFONT__MAX; i++)
815 ps_printf(p, " %s", fonts[i].name);
816
817 ps_printf(p, "\n%%%%EndComments\n");
818 } else {
819 ps_printf(p, "%%PDF-1.1\n");
820 pdf_obj(p, 1);
821 ps_printf(p, "<<\n");
822 ps_printf(p, ">>\n");
823 ps_printf(p, "endobj\n");
824
825 for (i = 0; i < (int)TERMFONT__MAX; i++) {
826 pdf_obj(p, (size_t)i + 3);
827 ps_printf(p, "<<\n");
828 ps_printf(p, "/Type /Font\n");
829 ps_printf(p, "/Subtype /Type1\n");
830 ps_printf(p, "/Name /F%d\n", i);
831 ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
832 ps_printf(p, ">>\n");
833 }
834 }
835
836 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3;
837 p->ps->pscol = p->ps->left;
838 p->ps->psrow = p->ps->top;
839 p->ps->flags |= PS_NEWPAGE;
840 ps_setfont(p, TERMFONT_NONE);
841 }
842
843
844 static void
ps_pletter(struct termp * p,int c)845 ps_pletter(struct termp *p, int c)
846 {
847 int f;
848
849 /*
850 * If we haven't opened a page context, then output that we're
851 * in a new page and make sure the font is correctly set.
852 */
853
854 if (PS_NEWPAGE & p->ps->flags) {
855 if (TERMTYPE_PS == p->type) {
856 ps_printf(p, "%%%%Page: %zu %zu\n",
857 p->ps->pages + 1,
858 p->ps->pages + 1);
859 ps_printf(p, "/%s %zu selectfont\n",
860 fonts[(int)p->ps->lastf].name,
861 p->ps->scale);
862 } else {
863 pdf_obj(p, p->ps->pdfbody +
864 p->ps->pages * 4);
865 ps_printf(p, "<<\n");
866 ps_printf(p, "/Length %zu 0 R\n",
867 p->ps->pdfbody + 1 +
868 p->ps->pages * 4);
869 ps_printf(p, ">>\nstream\n");
870 }
871 p->ps->pdflastpg = p->ps->pdfbytes;
872 p->ps->flags &= ~PS_NEWPAGE;
873 }
874
875 /*
876 * If we're not in a PostScript "word" context, then open one
877 * now at the current cursor.
878 */
879
880 if ( ! (PS_INLINE & p->ps->flags)) {
881 if (TERMTYPE_PS != p->type) {
882 ps_printf(p, "BT\n/F%d %zu Tf\n",
883 (int)p->ps->lastf,
884 p->ps->scale);
885 ps_printf(p, "%.3f %.3f Td\n(",
886 AFM2PNT(p, p->ps->pscol),
887 AFM2PNT(p, p->ps->psrow));
888 } else
889 ps_printf(p, "%.3f %.3f moveto\n(",
890 AFM2PNT(p, p->ps->pscol),
891 AFM2PNT(p, p->ps->psrow));
892 p->ps->flags |= PS_INLINE;
893 }
894
895 assert( ! (PS_NEWPAGE & p->ps->flags));
896
897 /*
898 * We need to escape these characters as per the PostScript
899 * specification. We would also escape non-graphable characters
900 * (like tabs), but none of them would get to this point and
901 * it's superfluous to abort() on them.
902 */
903
904 switch (c) {
905 case ('('):
906 /* FALLTHROUGH */
907 case (')'):
908 /* FALLTHROUGH */
909 case ('\\'):
910 ps_putchar(p, '\\');
911 break;
912 default:
913 break;
914 }
915
916 /* Write the character and adjust where we are on the page. */
917
918 f = (int)p->ps->lastf;
919
920 if (c <= 32 || (c - 32 >= MAXCHAR)) {
921 ps_putchar(p, ' ');
922 p->ps->pscol += (size_t)fonts[f].gly[0].wx;
923 return;
924 }
925
926 ps_putchar(p, (char)c);
927 c -= 32;
928 p->ps->pscol += (size_t)fonts[f].gly[c].wx;
929 }
930
931
932 static void
ps_pclose(struct termp * p)933 ps_pclose(struct termp *p)
934 {
935
936 /*
937 * Spit out that we're exiting a word context (this is a
938 * "partial close" because we don't check the last-char buffer
939 * or anything).
940 */
941
942 if ( ! (PS_INLINE & p->ps->flags))
943 return;
944
945 if (TERMTYPE_PS != p->type) {
946 ps_printf(p, ") Tj\nET\n");
947 } else
948 ps_printf(p, ") show\n");
949
950 p->ps->flags &= ~PS_INLINE;
951 }
952
953
954 static void
ps_fclose(struct termp * p)955 ps_fclose(struct termp *p)
956 {
957
958 /*
959 * Strong closure: if we have a last-char, spit it out after
960 * checking that we're in the right font mode. This will of
961 * course open a new scope, if applicable.
962 *
963 * Following this, close out any scope that's open.
964 */
965
966 if ('\0' != p->ps->last) {
967 if (p->ps->lastf != TERMFONT_NONE) {
968 ps_pclose(p);
969 ps_setfont(p, TERMFONT_NONE);
970 }
971 ps_pletter(p, p->ps->last);
972 p->ps->last = '\0';
973 }
974
975 if ( ! (PS_INLINE & p->ps->flags))
976 return;
977
978 ps_pclose(p);
979 }
980
981
982 static void
ps_letter(struct termp * p,int arg)983 ps_letter(struct termp *p, int arg)
984 {
985 char cc, c;
986
987 /* LINTED */
988 c = arg >= 128 || arg <= 0 ? '?' : arg;
989
990 /*
991 * State machine dictates whether to buffer the last character
992 * or not. Basically, encoded words are detected by checking if
993 * we're an "8" and switching on the buffer. Then we put "8" in
994 * our buffer, and on the next charater, flush both character
995 * and buffer. Thus, "regular" words are detected by having a
996 * regular character and a regular buffer character.
997 */
998
999 if ('\0' == p->ps->last) {
1000 assert(8 != c);
1001 p->ps->last = c;
1002 return;
1003 } else if (8 == p->ps->last) {
1004 assert(8 != c);
1005 p->ps->last = '\0';
1006 } else if (8 == c) {
1007 assert(8 != p->ps->last);
1008 if ('_' == p->ps->last) {
1009 if (p->ps->lastf != TERMFONT_UNDER) {
1010 ps_pclose(p);
1011 ps_setfont(p, TERMFONT_UNDER);
1012 }
1013 } else if (p->ps->lastf != TERMFONT_BOLD) {
1014 ps_pclose(p);
1015 ps_setfont(p, TERMFONT_BOLD);
1016 }
1017 p->ps->last = c;
1018 return;
1019 } else {
1020 if (p->ps->lastf != TERMFONT_NONE) {
1021 ps_pclose(p);
1022 ps_setfont(p, TERMFONT_NONE);
1023 }
1024 cc = p->ps->last;
1025 p->ps->last = c;
1026 c = cc;
1027 }
1028
1029 ps_pletter(p, c);
1030 }
1031
1032
1033 static void
ps_advance(struct termp * p,size_t len)1034 ps_advance(struct termp *p, size_t len)
1035 {
1036
1037 /*
1038 * Advance some spaces. This can probably be made smarter,
1039 * i.e., to have multiple space-separated words in the same
1040 * scope, but this is easier: just close out the current scope
1041 * and readjust our column settings.
1042 */
1043
1044 ps_fclose(p);
1045 p->ps->pscol += len;
1046 }
1047
1048
1049 static void
ps_endline(struct termp * p)1050 ps_endline(struct termp *p)
1051 {
1052
1053 /* Close out any scopes we have open: we're at eoln. */
1054
1055 ps_fclose(p);
1056
1057 /*
1058 * If we're in the margin, don't try to recalculate our current
1059 * row. XXX: if the column tries to be fancy with multiple
1060 * lines, we'll do nasty stuff.
1061 */
1062
1063 if (PS_MARGINS & p->ps->flags)
1064 return;
1065
1066 /* Left-justify. */
1067
1068 p->ps->pscol = p->ps->left;
1069
1070 /* If we haven't printed anything, return. */
1071
1072 if (PS_NEWPAGE & p->ps->flags)
1073 return;
1074
1075 /*
1076 * Put us down a line. If we're at the page bottom, spit out a
1077 * showpage and restart our row.
1078 */
1079
1080 if (p->ps->psrow >= p->ps->lineheight +
1081 p->ps->bottom) {
1082 p->ps->psrow -= p->ps->lineheight;
1083 return;
1084 }
1085
1086 ps_closepage(p);
1087 }
1088
1089
1090 static void
ps_setfont(struct termp * p,enum termfont f)1091 ps_setfont(struct termp *p, enum termfont f)
1092 {
1093
1094 assert(f < TERMFONT__MAX);
1095 p->ps->lastf = f;
1096
1097 /*
1098 * If we're still at the top of the page, let the font-setting
1099 * be delayed until we actually have stuff to print.
1100 */
1101
1102 if (PS_NEWPAGE & p->ps->flags)
1103 return;
1104
1105 if (TERMTYPE_PS == p->type)
1106 ps_printf(p, "/%s %zu selectfont\n",
1107 fonts[(int)f].name,
1108 p->ps->scale);
1109 else
1110 ps_printf(p, "/F%d %zu Tf\n",
1111 (int)f,
1112 p->ps->scale);
1113 }
1114
1115
1116 /* ARGSUSED */
1117 static size_t
ps_width(const struct termp * p,int c)1118 ps_width(const struct termp *p, int c)
1119 {
1120
1121 if (c <= 32 || c - 32 >= MAXCHAR)
1122 return((size_t)fonts[(int)TERMFONT_NONE].gly[0].wx);
1123
1124 c -= 32;
1125 return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx);
1126 }
1127
1128
1129 static double
ps_hspan(const struct termp * p,const struct roffsu * su)1130 ps_hspan(const struct termp *p, const struct roffsu *su)
1131 {
1132 double r;
1133
1134 /*
1135 * All of these measurements are derived by converting from the
1136 * native measurement to AFM units.
1137 */
1138
1139 switch (su->unit) {
1140 case (SCALE_CM):
1141 r = PNT2AFM(p, su->scale * 28.34);
1142 break;
1143 case (SCALE_IN):
1144 r = PNT2AFM(p, su->scale * 72);
1145 break;
1146 case (SCALE_PC):
1147 r = PNT2AFM(p, su->scale * 12);
1148 break;
1149 case (SCALE_PT):
1150 r = PNT2AFM(p, su->scale * 100);
1151 break;
1152 case (SCALE_EM):
1153 r = su->scale *
1154 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
1155 break;
1156 case (SCALE_MM):
1157 r = PNT2AFM(p, su->scale * 2.834);
1158 break;
1159 case (SCALE_EN):
1160 r = su->scale *
1161 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
1162 break;
1163 case (SCALE_VS):
1164 r = su->scale * p->ps->lineheight;
1165 break;
1166 default:
1167 r = su->scale;
1168 break;
1169 }
1170
1171 return(r);
1172 }
1173
1174 static void
ps_growbuf(struct termp * p,size_t sz)1175 ps_growbuf(struct termp *p, size_t sz)
1176 {
1177 if (p->ps->psmargcur + sz <= p->ps->psmargsz)
1178 return;
1179
1180 if (sz < PS_BUFSLOP)
1181 sz = PS_BUFSLOP;
1182
1183 p->ps->psmargsz += sz;
1184
1185 p->ps->psmarg = mandoc_realloc
1186 (p->ps->psmarg, p->ps->psmargsz);
1187 }
1188
1189