1 /* $Id: term_ps.c,v 1.85 2017/06/07 17:38:26 schwarze Exp $ */
2 /*
3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014, 2015, 2016, 2017 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 AUTHORS DISCLAIM ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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 #if HAVE_ERR
24 #include <err.h>
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 #define PS_BACKSP (1 << 3) /* last character was backspace */
66 size_t pscol; /* visible column (AFM units) */
67 size_t pscolnext; /* used for overstrike */
68 size_t psrow; /* visible row (AFM units) */
69 char *psmarg; /* margin buf */
70 size_t psmargsz; /* margin buf size */
71 size_t psmargcur; /* cur index in margin buf */
72 char last; /* last non-backspace seen */
73 enum termfont lastf; /* last set font */
74 enum termfont nextf; /* building next font here */
75 size_t scale; /* font scaling factor */
76 size_t pages; /* number of pages shown */
77 size_t lineheight; /* line height (AFM units) */
78 size_t top; /* body top (AFM units) */
79 size_t bottom; /* body bottom (AFM units) */
80 size_t height; /* page height (AFM units */
81 size_t width; /* page width (AFM units) */
82 size_t lastwidth; /* page width before last ll */
83 size_t left; /* body left (AFM units) */
84 size_t header; /* header pos (AFM units) */
85 size_t footer; /* footer pos (AFM units) */
86 size_t pdfbytes; /* current output byte */
87 size_t pdflastpg; /* byte of last page mark */
88 size_t pdfbody; /* start of body object */
89 size_t *pdfobjs; /* table of object offsets */
90 size_t pdfobjsz; /* size of pdfobjs */
91 };
92
93 static int ps_hspan(const struct termp *,
94 const struct roffsu *);
95 static size_t ps_width(const struct termp *, int);
96 static void ps_advance(struct termp *, size_t);
97 static void ps_begin(struct termp *);
98 static void ps_closepage(struct termp *);
99 static void ps_end(struct termp *);
100 static void ps_endline(struct termp *);
101 static void ps_growbuf(struct termp *, size_t);
102 static void ps_letter(struct termp *, int);
103 static void ps_pclose(struct termp *);
104 static void ps_plast(struct termp *);
105 static void ps_pletter(struct termp *, int);
106 static void ps_printf(struct termp *, const char *, ...)
107 __attribute__((__format__ (__printf__, 2, 3)));
108 static void ps_putchar(struct termp *, char);
109 static void ps_setfont(struct termp *, enum termfont);
110 static void ps_setwidth(struct termp *, int, int);
111 static struct termp *pspdf_alloc(const struct manoutput *);
112 static void pdf_obj(struct termp *, size_t);
113
114 /*
115 * We define, for the time being, three fonts: bold, oblique/italic, and
116 * normal (roman). The following table hard-codes the font metrics for
117 * ASCII, i.e., 32--127.
118 */
119
120 static const struct font fonts[TERMFONT__MAX] = {
121 { "Times-Roman", {
122 { 250 },
123 { 333 },
124 { 408 },
125 { 500 },
126 { 500 },
127 { 833 },
128 { 778 },
129 { 333 },
130 { 333 },
131 { 333 },
494 { 500 },
495 { 389 },
496 { 389 },
497 { 278 },
498 { 556 },
499 { 444 },
500 { 667 },
501 { 500 },
502 { 444 },
503 { 389 },
504 { 348 },
505 { 220 },
506 { 348 },
507 { 570 },
508 } },
509 };
510
511 void *
512 pdf_alloc(const struct manoutput *outopts)
513 {
514 struct termp *p;
515
516 if (NULL != (p = pspdf_alloc(outopts)))
517 p->type = TERMTYPE_PDF;
518
519 return p;
520 }
521
522 void *
523 ps_alloc(const struct manoutput *outopts)
524 {
525 struct termp *p;
526
527 if (NULL != (p = pspdf_alloc(outopts)))
528 p->type = TERMTYPE_PS;
529
530 return p;
531 }
532
533 static struct termp *
534 pspdf_alloc(const struct manoutput *outopts)
535 {
536 struct termp *p;
537 unsigned int pagex, pagey;
538 size_t marginx, marginy, lineheight;
539 const char *pp;
540
541 p = mandoc_calloc(1, sizeof(*p));
542 p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol));
543 p->maxtcol = 1;
544
545 p->enc = TERMENC_ASCII;
546 p->fontq = mandoc_reallocarray(NULL,
547 (p->fontsz = 8), sizeof(*p->fontq));
548 p->fontq[0] = p->fontl = TERMFONT_NONE;
549 p->ps = mandoc_calloc(1, sizeof(*p->ps));
550
551 p->advance = ps_advance;
552 p->begin = ps_begin;
553 p->end = ps_end;
554 p->endline = ps_endline;
555 p->hspan = ps_hspan;
556 p->letter = ps_letter;
557 p->setwidth = ps_setwidth;
558 p->width = ps_width;
559
560 /* Default to US letter (millimetres). */
561
562 pagex = 216;
563 pagey = 279;
564
565 /*
566 * The ISO-269 paper sizes can be calculated automatically, but
567 * it would require bringing in -lm for pow() and I'd rather not
568 * do that. So just do it the easy way for now. Since this
569 * only happens once, I'm not terribly concerned.
570 */
571
572 pp = outopts->paper;
573 if (pp && strcasecmp(pp, "letter")) {
574 if (0 == strcasecmp(pp, "a3")) {
575 pagex = 297;
576 pagey = 420;
577 } else if (0 == strcasecmp(pp, "a4")) {
578 pagex = 210;
579 pagey = 297;
580 } else if (0 == strcasecmp(pp, "a5")) {
581 pagex = 148;
582 pagey = 210;
583 } else if (0 == strcasecmp(pp, "legal")) {
584 pagex = 216;
585 pagey = 356;
586 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey))
587 warnx("%s: Unknown paper", pp);
588 }
589
590 /*
591 * This MUST be defined before any PNT2AFM or AFM2PNT
592 * calculations occur.
593 */
594
595 p->ps->scale = 11;
596
597 /* Remember millimetres -> AFM units. */
598
599 pagex = PNT2AFM(p, ((double)pagex * 2.834));
600 pagey = PNT2AFM(p, ((double)pagey * 2.834));
601
602 /* Margins are 1/9 the page x and y. */
603
604 marginx = (size_t)((double)pagex / 9.0);
605 marginy = (size_t)((double)pagey / 9.0);
606
607 /* Line-height is 1.4em. */
608
609 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
610
611 p->ps->width = p->ps->lastwidth = (size_t)pagex;
612 p->ps->height = (size_t)pagey;
613 p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
614 p->ps->top = pagey - marginy;
615 p->ps->footer = (marginy / 2) - (lineheight / 2);
616 p->ps->bottom = marginy;
617 p->ps->left = marginx;
618 p->ps->lineheight = lineheight;
619
620 p->defrmargin = pagex - (marginx * 2);
716 assert(obj > 0);
717
718 if ((obj - 1) >= p->ps->pdfobjsz) {
719 p->ps->pdfobjsz = obj + 128;
720 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs,
721 p->ps->pdfobjsz, sizeof(size_t));
722 }
723
724 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes;
725 ps_printf(p, "%zu 0 obj\n", obj);
726 }
727
728 static void
729 ps_closepage(struct termp *p)
730 {
731 int i;
732 size_t len, base;
733
734 /*
735 * Close out a page that we've already flushed to output. In
736 * PostScript, we simply note that the page must be showed. In
737 * PDF, we must now create the Length, Resource, and Page node
738 * for the page contents.
739 */
740
741 assert(p->ps->psmarg && p->ps->psmarg[0]);
742 ps_printf(p, "%s", p->ps->psmarg);
743
744 if (TERMTYPE_PS != p->type) {
745 ps_printf(p, "ET\n");
746
747 len = p->ps->pdfbytes - p->ps->pdflastpg;
748 base = p->ps->pages * 4 + p->ps->pdfbody;
749
750 ps_printf(p, "endstream\nendobj\n");
751
752 /* Length of content. */
753 pdf_obj(p, base + 1);
754 ps_printf(p, "%zu\nendobj\n", len);
755
756 /* Resource for content. */
757 pdf_obj(p, base + 2);
758 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
759 ps_printf(p, "/Font <<\n");
760 for (i = 0; i < (int)TERMFONT__MAX; i++)
761 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
762 ps_printf(p, ">>\n>>\n");
763
764 /* Page node. */
765 pdf_obj(p, base + 3);
766 ps_printf(p, "<<\n");
767 ps_printf(p, "/Type /Page\n");
768 ps_printf(p, "/Parent 2 0 R\n");
769 ps_printf(p, "/Resources %zu 0 R\n", base + 2);
770 ps_printf(p, "/Contents %zu 0 R\n", base);
771 ps_printf(p, ">>\nendobj\n");
772 } else
773 ps_printf(p, "showpage\n");
774
775 p->ps->pages++;
776 p->ps->psrow = p->ps->top;
777 assert( ! (PS_NEWPAGE & p->ps->flags));
778 p->ps->flags |= PS_NEWPAGE;
779 }
780
781 static void
782 ps_end(struct termp *p)
807
808 pdf_obj(p, 2);
809 ps_printf(p, "<<\n/Type /Pages\n");
810 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n",
811 (size_t)AFM2PNT(p, p->ps->width),
812 (size_t)AFM2PNT(p, p->ps->height));
813
814 ps_printf(p, "/Count %zu\n", p->ps->pages);
815 ps_printf(p, "/Kids [");
816
817 for (i = 0; i < p->ps->pages; i++)
818 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3);
819
820 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4;
821
822 ps_printf(p, "]\n>>\nendobj\n");
823 pdf_obj(p, base);
824 ps_printf(p, "<<\n");
825 ps_printf(p, "/Type /Catalog\n");
826 ps_printf(p, "/Pages 2 0 R\n");
827 ps_printf(p, ">>\n");
828 xref = p->ps->pdfbytes;
829 ps_printf(p, "xref\n");
830 ps_printf(p, "0 %zu\n", base + 1);
831 ps_printf(p, "0000000000 65535 f \n");
832
833 for (i = 0; i < base; i++)
834 ps_printf(p, "%.10zu 00000 n \n",
835 p->ps->pdfobjs[(int)i]);
836
837 ps_printf(p, "trailer\n");
838 ps_printf(p, "<<\n");
839 ps_printf(p, "/Size %zu\n", base + 1);
840 ps_printf(p, "/Root %zu 0 R\n", base);
841 ps_printf(p, "/Info 1 0 R\n");
842 ps_printf(p, ">>\n");
843 ps_printf(p, "startxref\n");
844 ps_printf(p, "%zu\n", xref);
845 ps_printf(p, "%%%%EOF\n");
846 }
847
848 static void
849 ps_begin(struct termp *p)
850 {
851 int i;
852
853 /*
854 * Print margins into margin buffer. Nothing gets output to the
855 * screen yet, so we don't need to initialise the primary state.
856 */
857
858 if (p->ps->psmarg) {
859 assert(p->ps->psmargsz);
860 p->ps->psmarg[0] = '\0';
861 }
862
863 /*p->ps->pdfbytes = 0;*/
864 p->ps->psmargcur = 0;
865 p->ps->flags = PS_MARGINS;
866 p->ps->pscol = p->ps->left;
867 p->ps->psrow = p->ps->header;
868
869 ps_setfont(p, TERMFONT_NONE);
870
871 (*p->headf)(p, p->argf);
872 (*p->endline)(p);
873
874 p->ps->pscol = p->ps->left;
875 p->ps->psrow = p->ps->footer;
876
877 (*p->footf)(p, p->argf);
878 (*p->endline)(p);
879
880 p->ps->flags &= ~PS_MARGINS;
881
882 assert(0 == p->ps->flags);
883 assert(p->ps->psmarg);
884 assert('\0' != p->ps->psmarg[0]);
885
886 /*
887 * Print header and initialise page state. Following this,
888 * stuff gets printed to the screen, so make sure we're sane.
889 */
890
891 if (TERMTYPE_PS == p->type) {
892 ps_printf(p, "%%!PS-Adobe-3.0\n");
893 ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
894 ps_printf(p, "%%%%Orientation: Portrait\n");
895 ps_printf(p, "%%%%Pages: (atend)\n");
896 ps_printf(p, "%%%%PageOrder: Ascend\n");
897 ps_printf(p, "%%%%DocumentMedia: "
898 "Default %zu %zu 0 () ()\n",
899 (size_t)AFM2PNT(p, p->ps->width),
900 (size_t)AFM2PNT(p, p->ps->height));
901 ps_printf(p, "%%%%DocumentNeededResources: font");
902
903 for (i = 0; i < (int)TERMFONT__MAX; i++)
904 ps_printf(p, " %s", fonts[i].name);
905
906 ps_printf(p, "\n%%%%EndComments\n");
907 } else {
908 ps_printf(p, "%%PDF-1.1\n");
909 pdf_obj(p, 1);
910 ps_printf(p, "<<\n");
911 ps_printf(p, ">>\n");
912 ps_printf(p, "endobj\n");
913
914 for (i = 0; i < (int)TERMFONT__MAX; i++) {
915 pdf_obj(p, (size_t)i + 3);
916 ps_printf(p, "<<\n");
917 ps_printf(p, "/Type /Font\n");
918 ps_printf(p, "/Subtype /Type1\n");
919 ps_printf(p, "/Name /F%d\n", i);
920 ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
921 ps_printf(p, ">>\n");
922 }
923 }
924
925 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3;
926 p->ps->pscol = p->ps->left;
927 p->ps->psrow = p->ps->top;
928 p->ps->flags |= PS_NEWPAGE;
929 ps_setfont(p, TERMFONT_NONE);
930 }
931
932 static void
933 ps_pletter(struct termp *p, int c)
934 {
935 int f;
936
937 /*
938 * If we haven't opened a page context, then output that we're
939 * in a new page and make sure the font is correctly set.
940 */
941
942 if (PS_NEWPAGE & p->ps->flags) {
943 if (TERMTYPE_PS == p->type) {
944 ps_printf(p, "%%%%Page: %zu %zu\n",
945 p->ps->pages + 1, p->ps->pages + 1);
946 ps_printf(p, "/%s %zu selectfont\n",
947 fonts[(int)p->ps->lastf].name,
948 p->ps->scale);
949 } else {
950 pdf_obj(p, p->ps->pdfbody +
951 p->ps->pages * 4);
952 ps_printf(p, "<<\n");
953 ps_printf(p, "/Length %zu 0 R\n",
954 p->ps->pdfbody + 1 + p->ps->pages * 4);
955 ps_printf(p, ">>\nstream\n");
956 }
957 p->ps->pdflastpg = p->ps->pdfbytes;
958 p->ps->flags &= ~PS_NEWPAGE;
959 }
960
961 /*
962 * If we're not in a PostScript "word" context, then open one
963 * now at the current cursor.
964 */
965
966 if ( ! (PS_INLINE & p->ps->flags)) {
967 if (TERMTYPE_PS != p->type) {
968 ps_printf(p, "BT\n/F%d %zu Tf\n",
969 (int)p->ps->lastf, p->ps->scale);
970 ps_printf(p, "%.3f %.3f Td\n(",
971 AFM2PNT(p, p->ps->pscol),
972 AFM2PNT(p, p->ps->psrow));
973 } else
974 ps_printf(p, "%.3f %.3f moveto\n(",
975 AFM2PNT(p, p->ps->pscol),
976 AFM2PNT(p, p->ps->psrow));
977 p->ps->flags |= PS_INLINE;
978 }
979
980 assert( ! (PS_NEWPAGE & p->ps->flags));
981
982 /*
983 * We need to escape these characters as per the PostScript
984 * specification. We would also escape non-graphable characters
985 * (like tabs), but none of them would get to this point and
986 * it's superfluous to abort() on them.
987 */
988
989 switch (c) {
990 case '(':
991 case ')':
992 case '\\':
993 ps_putchar(p, '\\');
994 break;
995 default:
996 break;
1004 c = 32;
1005
1006 ps_putchar(p, (char)c);
1007 c -= 32;
1008 p->ps->pscol += (size_t)fonts[f].gly[c].wx;
1009 }
1010
1011 static void
1012 ps_pclose(struct termp *p)
1013 {
1014
1015 /*
1016 * Spit out that we're exiting a word context (this is a
1017 * "partial close" because we don't check the last-char buffer
1018 * or anything).
1019 */
1020
1021 if ( ! (PS_INLINE & p->ps->flags))
1022 return;
1023
1024 if (TERMTYPE_PS != p->type) {
1025 ps_printf(p, ") Tj\nET\n");
1026 } else
1027 ps_printf(p, ") show\n");
1028
1029 p->ps->flags &= ~PS_INLINE;
1030 }
1031
1032 /* If we have a `last' char that wasn't printed yet, print it now. */
1033 static void
1034 ps_plast(struct termp *p)
1035 {
1036 size_t wx;
1037
1038 if (p->ps->last == '\0')
1039 return;
1040
1041 /* Check the font mode; open a new scope if it doesn't match. */
1042
1043 if (p->ps->nextf != p->ps->lastf) {
1044 ps_pclose(p);
1045 ps_setfont(p, p->ps->nextf);
1046 }
1047 p->ps->nextf = TERMFONT_NONE;
1226 p->tcol->offset -= p->ti;
1227 p->ti = 0;
1228 }
1229
1230 static void
1231 ps_setfont(struct termp *p, enum termfont f)
1232 {
1233
1234 assert(f < TERMFONT__MAX);
1235 p->ps->lastf = f;
1236
1237 /*
1238 * If we're still at the top of the page, let the font-setting
1239 * be delayed until we actually have stuff to print.
1240 */
1241
1242 if (PS_NEWPAGE & p->ps->flags)
1243 return;
1244
1245 if (TERMTYPE_PS == p->type)
1246 ps_printf(p, "/%s %zu selectfont\n",
1247 fonts[(int)f].name, p->ps->scale);
1248 else
1249 ps_printf(p, "/F%d %zu Tf\n",
1250 (int)f, p->ps->scale);
1251 }
1252
1253 static size_t
1254 ps_width(const struct termp *p, int c)
1255 {
1256
1257 if (c <= 32 || c - 32 >= MAXCHAR)
1258 c = 0;
1259 else
1260 c -= 32;
1261
1262 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx;
1263 }
1264
1265 static int
1266 ps_hspan(const struct termp *p, const struct roffsu *su)
1267 {
|
1 /* $Id: term_ps.c,v 1.91 2017/11/10 23:42:52 schwarze Exp $ */
2 /*
3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2017 Marc Espie <espie@openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 #include "config.h"
20
21 #include <sys/types.h>
22
23 #include <assert.h>
24 #if HAVE_ERR
25 #include <err.h>
50
51 struct glyph {
52 unsigned short wx; /* WX in AFM */
53 };
54
55 struct font {
56 const char *name; /* FontName in AFM */
57 #define MAXCHAR 95 /* total characters we can handle */
58 struct glyph gly[MAXCHAR]; /* glyph metrics */
59 };
60
61 struct termp_ps {
62 int flags;
63 #define PS_INLINE (1 << 0) /* we're in a word */
64 #define PS_MARGINS (1 << 1) /* we're in the margins */
65 #define PS_NEWPAGE (1 << 2) /* new page, no words yet */
66 #define PS_BACKSP (1 << 3) /* last character was backspace */
67 size_t pscol; /* visible column (AFM units) */
68 size_t pscolnext; /* used for overstrike */
69 size_t psrow; /* visible row (AFM units) */
70 size_t lastrow; /* psrow of the previous word */
71 char *psmarg; /* margin buf */
72 size_t psmargsz; /* margin buf size */
73 size_t psmargcur; /* cur index in margin buf */
74 char last; /* last non-backspace seen */
75 enum termfont lastf; /* last set font */
76 enum termfont nextf; /* building next font here */
77 size_t scale; /* font scaling factor */
78 size_t pages; /* number of pages shown */
79 size_t lineheight; /* line height (AFM units) */
80 size_t top; /* body top (AFM units) */
81 size_t bottom; /* body bottom (AFM units) */
82 const char *medianame; /* for DocumentMedia and PageSize */
83 size_t height; /* page height (AFM units */
84 size_t width; /* page width (AFM units) */
85 size_t lastwidth; /* page width before last ll */
86 size_t left; /* body left (AFM units) */
87 size_t header; /* header pos (AFM units) */
88 size_t footer; /* footer pos (AFM units) */
89 size_t pdfbytes; /* current output byte */
90 size_t pdflastpg; /* byte of last page mark */
91 size_t pdfbody; /* start of body object */
92 size_t *pdfobjs; /* table of object offsets */
93 size_t pdfobjsz; /* size of pdfobjs */
94 };
95
96 static int ps_hspan(const struct termp *,
97 const struct roffsu *);
98 static size_t ps_width(const struct termp *, int);
99 static void ps_advance(struct termp *, size_t);
100 static void ps_begin(struct termp *);
101 static void ps_closepage(struct termp *);
102 static void ps_end(struct termp *);
103 static void ps_endline(struct termp *);
104 static void ps_growbuf(struct termp *, size_t);
105 static void ps_letter(struct termp *, int);
106 static void ps_pclose(struct termp *);
107 static void ps_plast(struct termp *);
108 static void ps_pletter(struct termp *, int);
109 static void ps_printf(struct termp *, const char *, ...)
110 __attribute__((__format__ (__printf__, 2, 3)));
111 static void ps_putchar(struct termp *, char);
112 static void ps_setfont(struct termp *, enum termfont);
113 static void ps_setwidth(struct termp *, int, int);
114 static struct termp *pspdf_alloc(const struct manoutput *, enum termtype);
115 static void pdf_obj(struct termp *, size_t);
116
117 /*
118 * We define, for the time being, three fonts: bold, oblique/italic, and
119 * normal (roman). The following table hard-codes the font metrics for
120 * ASCII, i.e., 32--127.
121 */
122
123 static const struct font fonts[TERMFONT__MAX] = {
124 { "Times-Roman", {
125 { 250 },
126 { 333 },
127 { 408 },
128 { 500 },
129 { 500 },
130 { 833 },
131 { 778 },
132 { 333 },
133 { 333 },
134 { 333 },
497 { 500 },
498 { 389 },
499 { 389 },
500 { 278 },
501 { 556 },
502 { 444 },
503 { 667 },
504 { 500 },
505 { 444 },
506 { 389 },
507 { 348 },
508 { 220 },
509 { 348 },
510 { 570 },
511 } },
512 };
513
514 void *
515 pdf_alloc(const struct manoutput *outopts)
516 {
517 return pspdf_alloc(outopts, TERMTYPE_PDF);
518 }
519
520 void *
521 ps_alloc(const struct manoutput *outopts)
522 {
523 return pspdf_alloc(outopts, TERMTYPE_PS);
524 }
525
526 static struct termp *
527 pspdf_alloc(const struct manoutput *outopts, enum termtype type)
528 {
529 struct termp *p;
530 unsigned int pagex, pagey;
531 size_t marginx, marginy, lineheight;
532 const char *pp;
533
534 p = mandoc_calloc(1, sizeof(*p));
535 p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol));
536 p->maxtcol = 1;
537 p->type = type;
538
539 p->enc = TERMENC_ASCII;
540 p->fontq = mandoc_reallocarray(NULL,
541 (p->fontsz = 8), sizeof(*p->fontq));
542 p->fontq[0] = p->fontl = TERMFONT_NONE;
543 p->ps = mandoc_calloc(1, sizeof(*p->ps));
544
545 p->advance = ps_advance;
546 p->begin = ps_begin;
547 p->end = ps_end;
548 p->endline = ps_endline;
549 p->hspan = ps_hspan;
550 p->letter = ps_letter;
551 p->setwidth = ps_setwidth;
552 p->width = ps_width;
553
554 /* Default to US letter (millimetres). */
555
556 p->ps->medianame = "Letter";
557 pagex = 216;
558 pagey = 279;
559
560 /*
561 * The ISO-269 paper sizes can be calculated automatically, but
562 * it would require bringing in -lm for pow() and I'd rather not
563 * do that. So just do it the easy way for now. Since this
564 * only happens once, I'm not terribly concerned.
565 */
566
567 pp = outopts->paper;
568 if (pp != NULL && strcasecmp(pp, "letter") != 0) {
569 if (strcasecmp(pp, "a3") == 0) {
570 p->ps->medianame = "A3";
571 pagex = 297;
572 pagey = 420;
573 } else if (strcasecmp(pp, "a4") == 0) {
574 p->ps->medianame = "A4";
575 pagex = 210;
576 pagey = 297;
577 } else if (strcasecmp(pp, "a5") == 0) {
578 p->ps->medianame = "A5";
579 pagex = 148;
580 pagey = 210;
581 } else if (strcasecmp(pp, "legal") == 0) {
582 p->ps->medianame = "Legal";
583 pagex = 216;
584 pagey = 356;
585 } else if (sscanf(pp, "%ux%u", &pagex, &pagey) == 2)
586 p->ps->medianame = "CustomSize";
587 else
588 warnx("%s: Unknown paper", pp);
589 }
590
591 /*
592 * This MUST be defined before any PNT2AFM or AFM2PNT
593 * calculations occur.
594 */
595
596 p->ps->scale = 11;
597
598 /* Remember millimetres -> AFM units. */
599
600 pagex = PNT2AFM(p, ((double)pagex * 72.0 / 25.4));
601 pagey = PNT2AFM(p, ((double)pagey * 72.0 / 25.4));
602
603 /* Margins are 1/9 the page x and y. */
604
605 marginx = (size_t)((double)pagex / 9.0);
606 marginy = (size_t)((double)pagey / 9.0);
607
608 /* Line-height is 1.4em. */
609
610 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
611
612 p->ps->width = p->ps->lastwidth = (size_t)pagex;
613 p->ps->height = (size_t)pagey;
614 p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
615 p->ps->top = pagey - marginy;
616 p->ps->footer = (marginy / 2) - (lineheight / 2);
617 p->ps->bottom = marginy;
618 p->ps->left = marginx;
619 p->ps->lineheight = lineheight;
620
621 p->defrmargin = pagex - (marginx * 2);
717 assert(obj > 0);
718
719 if ((obj - 1) >= p->ps->pdfobjsz) {
720 p->ps->pdfobjsz = obj + 128;
721 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs,
722 p->ps->pdfobjsz, sizeof(size_t));
723 }
724
725 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes;
726 ps_printf(p, "%zu 0 obj\n", obj);
727 }
728
729 static void
730 ps_closepage(struct termp *p)
731 {
732 int i;
733 size_t len, base;
734
735 /*
736 * Close out a page that we've already flushed to output. In
737 * PostScript, we simply note that the page must be shown. In
738 * PDF, we must now create the Length, Resource, and Page node
739 * for the page contents.
740 */
741
742 assert(p->ps->psmarg && p->ps->psmarg[0]);
743 ps_printf(p, "%s", p->ps->psmarg);
744
745 if (TERMTYPE_PS != p->type) {
746 len = p->ps->pdfbytes - p->ps->pdflastpg;
747 base = p->ps->pages * 4 + p->ps->pdfbody;
748
749 ps_printf(p, "endstream\nendobj\n");
750
751 /* Length of content. */
752 pdf_obj(p, base + 1);
753 ps_printf(p, "%zu\nendobj\n", len);
754
755 /* Resource for content. */
756 pdf_obj(p, base + 2);
757 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
758 ps_printf(p, "/Font <<\n");
759 for (i = 0; i < (int)TERMFONT__MAX; i++)
760 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
761 ps_printf(p, ">>\n>>\nendobj\n");
762
763 /* Page node. */
764 pdf_obj(p, base + 3);
765 ps_printf(p, "<<\n");
766 ps_printf(p, "/Type /Page\n");
767 ps_printf(p, "/Parent 2 0 R\n");
768 ps_printf(p, "/Resources %zu 0 R\n", base + 2);
769 ps_printf(p, "/Contents %zu 0 R\n", base);
770 ps_printf(p, ">>\nendobj\n");
771 } else
772 ps_printf(p, "showpage\n");
773
774 p->ps->pages++;
775 p->ps->psrow = p->ps->top;
776 assert( ! (PS_NEWPAGE & p->ps->flags));
777 p->ps->flags |= PS_NEWPAGE;
778 }
779
780 static void
781 ps_end(struct termp *p)
806
807 pdf_obj(p, 2);
808 ps_printf(p, "<<\n/Type /Pages\n");
809 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n",
810 (size_t)AFM2PNT(p, p->ps->width),
811 (size_t)AFM2PNT(p, p->ps->height));
812
813 ps_printf(p, "/Count %zu\n", p->ps->pages);
814 ps_printf(p, "/Kids [");
815
816 for (i = 0; i < p->ps->pages; i++)
817 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3);
818
819 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4;
820
821 ps_printf(p, "]\n>>\nendobj\n");
822 pdf_obj(p, base);
823 ps_printf(p, "<<\n");
824 ps_printf(p, "/Type /Catalog\n");
825 ps_printf(p, "/Pages 2 0 R\n");
826 ps_printf(p, ">>\nendobj\n");
827 xref = p->ps->pdfbytes;
828 ps_printf(p, "xref\n");
829 ps_printf(p, "0 %zu\n", base + 1);
830 ps_printf(p, "0000000000 65535 f \n");
831
832 for (i = 0; i < base; i++)
833 ps_printf(p, "%.10zu 00000 n \n",
834 p->ps->pdfobjs[(int)i]);
835
836 ps_printf(p, "trailer\n");
837 ps_printf(p, "<<\n");
838 ps_printf(p, "/Size %zu\n", base + 1);
839 ps_printf(p, "/Root %zu 0 R\n", base);
840 ps_printf(p, "/Info 1 0 R\n");
841 ps_printf(p, ">>\n");
842 ps_printf(p, "startxref\n");
843 ps_printf(p, "%zu\n", xref);
844 ps_printf(p, "%%%%EOF\n");
845 }
846
847 static void
848 ps_begin(struct termp *p)
849 {
850 size_t width, height;
851 int i;
852
853 /*
854 * Print margins into margin buffer. Nothing gets output to the
855 * screen yet, so we don't need to initialise the primary state.
856 */
857
858 if (p->ps->psmarg) {
859 assert(p->ps->psmargsz);
860 p->ps->psmarg[0] = '\0';
861 }
862
863 /*p->ps->pdfbytes = 0;*/
864 p->ps->psmargcur = 0;
865 p->ps->flags = PS_MARGINS;
866 p->ps->pscol = p->ps->left;
867 p->ps->psrow = p->ps->header;
868 p->ps->lastrow = 0; /* impossible row */
869
870 ps_setfont(p, TERMFONT_NONE);
871
872 (*p->headf)(p, p->argf);
873 (*p->endline)(p);
874
875 p->ps->pscol = p->ps->left;
876 p->ps->psrow = p->ps->footer;
877
878 (*p->footf)(p, p->argf);
879 (*p->endline)(p);
880
881 p->ps->flags &= ~PS_MARGINS;
882
883 assert(0 == p->ps->flags);
884 assert(p->ps->psmarg);
885 assert('\0' != p->ps->psmarg[0]);
886
887 /*
888 * Print header and initialise page state. Following this,
889 * stuff gets printed to the screen, so make sure we're sane.
890 */
891
892 if (TERMTYPE_PS == p->type) {
893 width = AFM2PNT(p, p->ps->width);
894 height = AFM2PNT(p, p->ps->height);
895
896 ps_printf(p, "%%!PS-Adobe-3.0\n");
897 ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
898 ps_printf(p, "%%%%Orientation: Portrait\n");
899 ps_printf(p, "%%%%Pages: (atend)\n");
900 ps_printf(p, "%%%%PageOrder: Ascend\n");
901 ps_printf(p, "%%%%DocumentMedia: man-%s %zu %zu 0 () ()\n",
902 p->ps->medianame, width, height);
903 ps_printf(p, "%%%%DocumentNeededResources: font");
904
905 for (i = 0; i < (int)TERMFONT__MAX; i++)
906 ps_printf(p, " %s", fonts[i].name);
907
908 ps_printf(p, "\n%%%%DocumentSuppliedResources: "
909 "procset MandocProcs 1.0 0\n");
910 ps_printf(p, "%%%%EndComments\n");
911 ps_printf(p, "%%%%BeginProlog\n");
912 ps_printf(p, "%%%%BeginResource: procset MandocProcs "
913 "10170 10170\n");
914 /* The font size is effectively hard-coded for now. */
915 ps_printf(p, "/fs %zu def\n", p->ps->scale);
916 for (i = 0; i < (int)TERMFONT__MAX; i++)
917 ps_printf(p, "/f%d { /%s fs selectfont } def\n",
918 i, fonts[i].name);
919 ps_printf(p, "/s { 3 1 roll moveto show } bind def\n");
920 ps_printf(p, "/c { exch currentpoint exch pop "
921 "moveto show } bind def\n");
922 ps_printf(p, "%%%%EndResource\n");
923 ps_printf(p, "%%%%EndProlog\n");
924 ps_printf(p, "%%%%BeginSetup\n");
925 ps_printf(p, "%%%%BeginFeature: *PageSize %s\n",
926 p->ps->medianame);
927 ps_printf(p, "<</PageSize [%zu %zu]>>setpagedevice\n",
928 width, height);
929 ps_printf(p, "%%%%EndFeature\n");
930 ps_printf(p, "%%%%EndSetup\n");
931 } else {
932 ps_printf(p, "%%PDF-1.1\n");
933 pdf_obj(p, 1);
934 ps_printf(p, "<<\n");
935 ps_printf(p, ">>\n");
936 ps_printf(p, "endobj\n");
937
938 for (i = 0; i < (int)TERMFONT__MAX; i++) {
939 pdf_obj(p, (size_t)i + 3);
940 ps_printf(p, "<<\n");
941 ps_printf(p, "/Type /Font\n");
942 ps_printf(p, "/Subtype /Type1\n");
943 ps_printf(p, "/Name /F%d\n", i);
944 ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
945 ps_printf(p, ">>\nendobj\n");
946 }
947 }
948
949 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3;
950 p->ps->pscol = p->ps->left;
951 p->ps->psrow = p->ps->top;
952 p->ps->flags |= PS_NEWPAGE;
953 ps_setfont(p, TERMFONT_NONE);
954 }
955
956 static void
957 ps_pletter(struct termp *p, int c)
958 {
959 int f;
960
961 /*
962 * If we haven't opened a page context, then output that we're
963 * in a new page and make sure the font is correctly set.
964 */
965
966 if (PS_NEWPAGE & p->ps->flags) {
967 if (TERMTYPE_PS == p->type) {
968 ps_printf(p, "%%%%Page: %zu %zu\n",
969 p->ps->pages + 1, p->ps->pages + 1);
970 ps_printf(p, "f%d\n", (int)p->ps->lastf);
971 } else {
972 pdf_obj(p, p->ps->pdfbody +
973 p->ps->pages * 4);
974 ps_printf(p, "<<\n");
975 ps_printf(p, "/Length %zu 0 R\n",
976 p->ps->pdfbody + 1 + p->ps->pages * 4);
977 ps_printf(p, ">>\nstream\n");
978 }
979 p->ps->pdflastpg = p->ps->pdfbytes;
980 p->ps->flags &= ~PS_NEWPAGE;
981 }
982
983 /*
984 * If we're not in a PostScript "word" context, then open one
985 * now at the current cursor.
986 */
987
988 if ( ! (PS_INLINE & p->ps->flags)) {
989 if (TERMTYPE_PS != p->type) {
990 ps_printf(p, "BT\n/F%d %zu Tf\n",
991 (int)p->ps->lastf, p->ps->scale);
992 ps_printf(p, "%.3f %.3f Td\n(",
993 AFM2PNT(p, p->ps->pscol),
994 AFM2PNT(p, p->ps->psrow));
995 } else {
996 ps_printf(p, "%.3f", AFM2PNT(p, p->ps->pscol));
997 if (p->ps->psrow != p->ps->lastrow)
998 ps_printf(p, " %.3f",
999 AFM2PNT(p, p->ps->psrow));
1000 ps_printf(p, "(");
1001 }
1002 p->ps->flags |= PS_INLINE;
1003 }
1004
1005 assert( ! (PS_NEWPAGE & p->ps->flags));
1006
1007 /*
1008 * We need to escape these characters as per the PostScript
1009 * specification. We would also escape non-graphable characters
1010 * (like tabs), but none of them would get to this point and
1011 * it's superfluous to abort() on them.
1012 */
1013
1014 switch (c) {
1015 case '(':
1016 case ')':
1017 case '\\':
1018 ps_putchar(p, '\\');
1019 break;
1020 default:
1021 break;
1029 c = 32;
1030
1031 ps_putchar(p, (char)c);
1032 c -= 32;
1033 p->ps->pscol += (size_t)fonts[f].gly[c].wx;
1034 }
1035
1036 static void
1037 ps_pclose(struct termp *p)
1038 {
1039
1040 /*
1041 * Spit out that we're exiting a word context (this is a
1042 * "partial close" because we don't check the last-char buffer
1043 * or anything).
1044 */
1045
1046 if ( ! (PS_INLINE & p->ps->flags))
1047 return;
1048
1049 if (TERMTYPE_PS != p->type)
1050 ps_printf(p, ") Tj\nET\n");
1051 else if (p->ps->psrow == p->ps->lastrow)
1052 ps_printf(p, ")c\n");
1053 else {
1054 ps_printf(p, ")s\n");
1055 p->ps->lastrow = p->ps->psrow;
1056 }
1057
1058 p->ps->flags &= ~PS_INLINE;
1059 }
1060
1061 /* If we have a `last' char that wasn't printed yet, print it now. */
1062 static void
1063 ps_plast(struct termp *p)
1064 {
1065 size_t wx;
1066
1067 if (p->ps->last == '\0')
1068 return;
1069
1070 /* Check the font mode; open a new scope if it doesn't match. */
1071
1072 if (p->ps->nextf != p->ps->lastf) {
1073 ps_pclose(p);
1074 ps_setfont(p, p->ps->nextf);
1075 }
1076 p->ps->nextf = TERMFONT_NONE;
1255 p->tcol->offset -= p->ti;
1256 p->ti = 0;
1257 }
1258
1259 static void
1260 ps_setfont(struct termp *p, enum termfont f)
1261 {
1262
1263 assert(f < TERMFONT__MAX);
1264 p->ps->lastf = f;
1265
1266 /*
1267 * If we're still at the top of the page, let the font-setting
1268 * be delayed until we actually have stuff to print.
1269 */
1270
1271 if (PS_NEWPAGE & p->ps->flags)
1272 return;
1273
1274 if (TERMTYPE_PS == p->type)
1275 ps_printf(p, "f%d\n", (int)f);
1276 else
1277 ps_printf(p, "/F%d %zu Tf\n",
1278 (int)f, p->ps->scale);
1279 }
1280
1281 static size_t
1282 ps_width(const struct termp *p, int c)
1283 {
1284
1285 if (c <= 32 || c - 32 >= MAXCHAR)
1286 c = 0;
1287 else
1288 c -= 32;
1289
1290 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx;
1291 }
1292
1293 static int
1294 ps_hspan(const struct termp *p, const struct roffsu *su)
1295 {
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