1 /* $Id: term_ps.c,v 1.82 2016/08/10 11:03:43 schwarze Exp $ */
3 * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2014, 2015, 2016 Ingo Schwarze <schwarze@openbsd.org>
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.
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.
20 #include <sys/types.h>
33 #include "mandoc_aux.h"
39 /* These work the buffer used by the header and footer. */
40 #define PS_BUFSLOP 128
42 /* Convert PostScript point "x" to an AFM unit. */
43 #define PNT2AFM(p, x) \
44 (size_t)((double)(x) * (1000.0 / (double)(p)->ps->scale))
46 /* Convert an AFM unit "x" to a PostScript points */
47 #define AFM2PNT(p, x) \
48 ((double)(x) / (1000.0 / (double)(p)->ps->scale))
51 unsigned short wx; /* WX in AFM */
55 const char *name; /* FontName in AFM */
56 #define MAXCHAR 95 /* total characters we can handle */
57 struct glyph gly[MAXCHAR]; /* glyph metrics */
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 */
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);
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.
120 static const struct font fonts[TERMFONT__MAX] = {
412 { "Times-BoldItalic", {
512 pdf_alloc(const struct manoutput *outopts)
516 if (NULL != (p = pspdf_alloc(outopts)))
517 p->type = TERMTYPE_PDF;
523 ps_alloc(const struct manoutput *outopts)
527 if (NULL != (p = pspdf_alloc(outopts)))
528 p->type = TERMTYPE_PS;
533 static struct termp *
534 pspdf_alloc(const struct manoutput *outopts)
537 unsigned int pagex, pagey;
538 size_t marginx, marginy, lineheight;
541 p = mandoc_calloc(1, sizeof(struct termp));
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));
548 p->advance = ps_advance;
551 p->endline = ps_endline;
553 p->letter = ps_letter;
554 p->setwidth = ps_setwidth;
557 /* Default to US letter (millimetres). */
563 * The ISO-269 paper sizes can be calculated automatically, but
564 * it would require bringing in -lm for pow() and I'd rather not
565 * do that. So just do it the easy way for now. Since this
566 * only happens once, I'm not terribly concerned.
570 if (pp && strcasecmp(pp, "letter")) {
571 if (0 == strcasecmp(pp, "a3")) {
574 } else if (0 == strcasecmp(pp, "a4")) {
577 } else if (0 == strcasecmp(pp, "a5")) {
580 } else if (0 == strcasecmp(pp, "legal")) {
583 } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey))
584 warnx("%s: Unknown paper", pp);
588 * This MUST be defined before any PNT2AFM or AFM2PNT
589 * calculations occur.
594 /* Remember millimetres -> AFM units. */
596 pagex = PNT2AFM(p, ((double)pagex * 2.834));
597 pagey = PNT2AFM(p, ((double)pagey * 2.834));
599 /* Margins are 1/9 the page x and y. */
601 marginx = (size_t)((double)pagex / 9.0);
602 marginy = (size_t)((double)pagey / 9.0);
604 /* Line-height is 1.4em. */
606 lineheight = PNT2AFM(p, ((double)p->ps->scale * 1.4));
608 p->ps->width = p->ps->lastwidth = (size_t)pagex;
609 p->ps->height = (size_t)pagey;
610 p->ps->header = pagey - (marginy / 2) - (lineheight / 2);
611 p->ps->top = pagey - marginy;
612 p->ps->footer = (marginy / 2) - (lineheight / 2);
613 p->ps->bottom = marginy;
614 p->ps->left = marginx;
615 p->ps->lineheight = lineheight;
617 p->defrmargin = pagex - (marginx * 2);
622 ps_setwidth(struct termp *p, int iop, int width)
626 lastwidth = p->ps->width;
628 p->ps->width += width;
630 p->ps->width = width ? (size_t)width : p->ps->lastwidth;
631 else if (p->ps->width > (size_t)width)
632 p->ps->width -= width;
635 p->ps->lastwidth = lastwidth;
639 pspdf_free(void *arg)
643 p = (struct termp *)arg;
646 free(p->ps->pdfobjs);
653 ps_printf(struct termp *p, const char *fmt, ...)
661 * If we're running in regular mode, then pipe directly into
662 * vprintf(). If we're processing margins, then push the data
663 * into our growable margin buffer.
666 if ( ! (PS_MARGINS & p->ps->flags)) {
667 len = vprintf(fmt, ap);
669 p->ps->pdfbytes += len < 0 ? 0 : (size_t)len;
674 * XXX: I assume that the in-margin print won't exceed
675 * PS_BUFSLOP (128 bytes), which is reasonable but still an
676 * assumption that will cause pukeage if it's not the case.
679 ps_growbuf(p, PS_BUFSLOP);
681 pos = (int)p->ps->psmargcur;
682 vsnprintf(&p->ps->psmarg[pos], PS_BUFSLOP, fmt, ap);
686 p->ps->psmargcur = strlen(p->ps->psmarg);
690 ps_putchar(struct termp *p, char c)
694 /* See ps_printf(). */
696 if ( ! (PS_MARGINS & p->ps->flags)) {
704 pos = (int)p->ps->psmargcur++;
705 p->ps->psmarg[pos++] = c;
706 p->ps->psmarg[pos] = '\0';
710 pdf_obj(struct termp *p, size_t obj)
715 if ((obj - 1) >= p->ps->pdfobjsz) {
716 p->ps->pdfobjsz = obj + 128;
717 p->ps->pdfobjs = mandoc_reallocarray(p->ps->pdfobjs,
718 p->ps->pdfobjsz, sizeof(size_t));
721 p->ps->pdfobjs[(int)obj - 1] = p->ps->pdfbytes;
722 ps_printf(p, "%zu 0 obj\n", obj);
726 ps_closepage(struct termp *p)
732 * Close out a page that we've already flushed to output. In
733 * PostScript, we simply note that the page must be showed. In
734 * PDF, we must now create the Length, Resource, and Page node
735 * for the page contents.
738 assert(p->ps->psmarg && p->ps->psmarg[0]);
739 ps_printf(p, "%s", p->ps->psmarg);
741 if (TERMTYPE_PS != p->type) {
742 ps_printf(p, "ET\n");
744 len = p->ps->pdfbytes - p->ps->pdflastpg;
745 base = p->ps->pages * 4 + p->ps->pdfbody;
747 ps_printf(p, "endstream\nendobj\n");
749 /* Length of content. */
750 pdf_obj(p, base + 1);
751 ps_printf(p, "%zu\nendobj\n", len);
753 /* Resource for content. */
754 pdf_obj(p, base + 2);
755 ps_printf(p, "<<\n/ProcSet [/PDF /Text]\n");
756 ps_printf(p, "/Font <<\n");
757 for (i = 0; i < (int)TERMFONT__MAX; i++)
758 ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
759 ps_printf(p, ">>\n>>\n");
762 pdf_obj(p, base + 3);
763 ps_printf(p, "<<\n");
764 ps_printf(p, "/Type /Page\n");
765 ps_printf(p, "/Parent 2 0 R\n");
766 ps_printf(p, "/Resources %zu 0 R\n", base + 2);
767 ps_printf(p, "/Contents %zu 0 R\n", base);
768 ps_printf(p, ">>\nendobj\n");
770 ps_printf(p, "showpage\n");
773 p->ps->psrow = p->ps->top;
774 assert( ! (PS_NEWPAGE & p->ps->flags));
775 p->ps->flags |= PS_NEWPAGE;
779 ps_end(struct termp *p)
781 size_t i, xref, base;
787 * At the end of the file, do one last showpage. This is the
788 * same behaviour as groff(1) and works for multiple pages as
792 if ( ! (PS_NEWPAGE & p->ps->flags)) {
793 assert(0 == p->ps->flags);
794 assert('\0' == p->ps->last);
798 if (TERMTYPE_PS == p->type) {
799 ps_printf(p, "%%%%Trailer\n");
800 ps_printf(p, "%%%%Pages: %zu\n", p->ps->pages);
801 ps_printf(p, "%%%%EOF\n");
806 ps_printf(p, "<<\n/Type /Pages\n");
807 ps_printf(p, "/MediaBox [0 0 %zu %zu]\n",
808 (size_t)AFM2PNT(p, p->ps->width),
809 (size_t)AFM2PNT(p, p->ps->height));
811 ps_printf(p, "/Count %zu\n", p->ps->pages);
812 ps_printf(p, "/Kids [");
814 for (i = 0; i < p->ps->pages; i++)
815 ps_printf(p, " %zu 0 R", i * 4 + p->ps->pdfbody + 3);
817 base = (p->ps->pages - 1) * 4 + p->ps->pdfbody + 4;
819 ps_printf(p, "]\n>>\nendobj\n");
821 ps_printf(p, "<<\n");
822 ps_printf(p, "/Type /Catalog\n");
823 ps_printf(p, "/Pages 2 0 R\n");
824 ps_printf(p, ">>\n");
825 xref = p->ps->pdfbytes;
826 ps_printf(p, "xref\n");
827 ps_printf(p, "0 %zu\n", base + 1);
828 ps_printf(p, "0000000000 65535 f \n");
830 for (i = 0; i < base; i++)
831 ps_printf(p, "%.10zu 00000 n \n",
832 p->ps->pdfobjs[(int)i]);
834 ps_printf(p, "trailer\n");
835 ps_printf(p, "<<\n");
836 ps_printf(p, "/Size %zu\n", base + 1);
837 ps_printf(p, "/Root %zu 0 R\n", base);
838 ps_printf(p, "/Info 1 0 R\n");
839 ps_printf(p, ">>\n");
840 ps_printf(p, "startxref\n");
841 ps_printf(p, "%zu\n", xref);
842 ps_printf(p, "%%%%EOF\n");
846 ps_begin(struct termp *p)
851 * Print margins into margin buffer. Nothing gets output to the
852 * screen yet, so we don't need to initialise the primary state.
856 assert(p->ps->psmargsz);
857 p->ps->psmarg[0] = '\0';
860 /*p->ps->pdfbytes = 0;*/
861 p->ps->psmargcur = 0;
862 p->ps->flags = PS_MARGINS;
863 p->ps->pscol = p->ps->left;
864 p->ps->psrow = p->ps->header;
866 ps_setfont(p, TERMFONT_NONE);
868 (*p->headf)(p, p->argf);
871 p->ps->pscol = p->ps->left;
872 p->ps->psrow = p->ps->footer;
874 (*p->footf)(p, p->argf);
877 p->ps->flags &= ~PS_MARGINS;
879 assert(0 == p->ps->flags);
880 assert(p->ps->psmarg);
881 assert('\0' != p->ps->psmarg[0]);
884 * Print header and initialise page state. Following this,
885 * stuff gets printed to the screen, so make sure we're sane.
888 if (TERMTYPE_PS == p->type) {
889 ps_printf(p, "%%!PS-Adobe-3.0\n");
890 ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
891 ps_printf(p, "%%%%Orientation: Portrait\n");
892 ps_printf(p, "%%%%Pages: (atend)\n");
893 ps_printf(p, "%%%%PageOrder: Ascend\n");
894 ps_printf(p, "%%%%DocumentMedia: "
895 "Default %zu %zu 0 () ()\n",
896 (size_t)AFM2PNT(p, p->ps->width),
897 (size_t)AFM2PNT(p, p->ps->height));
898 ps_printf(p, "%%%%DocumentNeededResources: font");
900 for (i = 0; i < (int)TERMFONT__MAX; i++)
901 ps_printf(p, " %s", fonts[i].name);
903 ps_printf(p, "\n%%%%EndComments\n");
905 ps_printf(p, "%%PDF-1.1\n");
907 ps_printf(p, "<<\n");
908 ps_printf(p, ">>\n");
909 ps_printf(p, "endobj\n");
911 for (i = 0; i < (int)TERMFONT__MAX; i++) {
912 pdf_obj(p, (size_t)i + 3);
913 ps_printf(p, "<<\n");
914 ps_printf(p, "/Type /Font\n");
915 ps_printf(p, "/Subtype /Type1\n");
916 ps_printf(p, "/Name /F%d\n", i);
917 ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
918 ps_printf(p, ">>\n");
922 p->ps->pdfbody = (size_t)TERMFONT__MAX + 3;
923 p->ps->pscol = p->ps->left;
924 p->ps->psrow = p->ps->top;
925 p->ps->flags |= PS_NEWPAGE;
926 ps_setfont(p, TERMFONT_NONE);
930 ps_pletter(struct termp *p, int c)
935 * If we haven't opened a page context, then output that we're
936 * in a new page and make sure the font is correctly set.
939 if (PS_NEWPAGE & p->ps->flags) {
940 if (TERMTYPE_PS == p->type) {
941 ps_printf(p, "%%%%Page: %zu %zu\n",
942 p->ps->pages + 1, p->ps->pages + 1);
943 ps_printf(p, "/%s %zu selectfont\n",
944 fonts[(int)p->ps->lastf].name,
947 pdf_obj(p, p->ps->pdfbody +
949 ps_printf(p, "<<\n");
950 ps_printf(p, "/Length %zu 0 R\n",
951 p->ps->pdfbody + 1 + p->ps->pages * 4);
952 ps_printf(p, ">>\nstream\n");
954 p->ps->pdflastpg = p->ps->pdfbytes;
955 p->ps->flags &= ~PS_NEWPAGE;
959 * If we're not in a PostScript "word" context, then open one
960 * now at the current cursor.
963 if ( ! (PS_INLINE & p->ps->flags)) {
964 if (TERMTYPE_PS != p->type) {
965 ps_printf(p, "BT\n/F%d %zu Tf\n",
966 (int)p->ps->lastf, p->ps->scale);
967 ps_printf(p, "%.3f %.3f Td\n(",
968 AFM2PNT(p, p->ps->pscol),
969 AFM2PNT(p, p->ps->psrow));
971 ps_printf(p, "%.3f %.3f moveto\n(",
972 AFM2PNT(p, p->ps->pscol),
973 AFM2PNT(p, p->ps->psrow));
974 p->ps->flags |= PS_INLINE;
977 assert( ! (PS_NEWPAGE & p->ps->flags));
980 * We need to escape these characters as per the PostScript
981 * specification. We would also escape non-graphable characters
982 * (like tabs), but none of them would get to this point and
983 * it's superfluous to abort() on them.
996 /* Write the character and adjust where we are on the page. */
998 f = (int)p->ps->lastf;
1000 if (c <= 32 || c - 32 >= MAXCHAR)
1003 ps_putchar(p, (char)c);
1005 p->ps->pscol += (size_t)fonts[f].gly[c].wx;
1009 ps_pclose(struct termp *p)
1013 * Spit out that we're exiting a word context (this is a
1014 * "partial close" because we don't check the last-char buffer
1018 if ( ! (PS_INLINE & p->ps->flags))
1021 if (TERMTYPE_PS != p->type) {
1022 ps_printf(p, ") Tj\nET\n");
1024 ps_printf(p, ") show\n");
1026 p->ps->flags &= ~PS_INLINE;
1029 /* If we have a `last' char that wasn't printed yet, print it now. */
1031 ps_plast(struct termp *p)
1035 if (p->ps->last == '\0')
1038 /* Check the font mode; open a new scope if it doesn't match. */
1040 if (p->ps->nextf != p->ps->lastf) {
1042 ps_setfont(p, p->ps->nextf);
1044 p->ps->nextf = TERMFONT_NONE;
1047 * For an overstrike, if a previous character
1048 * was wider, advance to center the new one.
1051 if (p->ps->pscolnext) {
1052 wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx;
1053 if (p->ps->pscol + wx < p->ps->pscolnext)
1054 p->ps->pscol = (p->ps->pscol +
1055 p->ps->pscolnext - wx) / 2;
1058 ps_pletter(p, p->ps->last);
1062 * For an overstrike, if a previous character
1063 * was wider, advance to the end of the old one.
1066 if (p->ps->pscol < p->ps->pscolnext) {
1068 p->ps->pscol = p->ps->pscolnext;
1073 ps_letter(struct termp *p, int arg)
1078 c = arg >= 128 || arg <= 0 ? '?' : arg;
1081 * When receiving a backspace, merely flag it.
1082 * We don't know yet whether it is
1083 * a font instruction or an overstrike.
1087 assert(p->ps->last != '\0');
1088 assert( ! (p->ps->flags & PS_BACKSP));
1089 p->ps->flags |= PS_BACKSP;
1094 * Decode font instructions.
1097 if (p->ps->flags & PS_BACKSP) {
1098 if (p->ps->last == '_') {
1099 switch (p->ps->nextf) {
1103 p->ps->nextf = TERMFONT_BI;
1106 p->ps->nextf = TERMFONT_UNDER;
1109 p->ps->flags &= ~PS_BACKSP;
1112 if (p->ps->last == c) {
1113 switch (p->ps->nextf) {
1116 case TERMFONT_UNDER:
1117 p->ps->nextf = TERMFONT_BI;
1120 p->ps->nextf = TERMFONT_BOLD;
1122 p->ps->flags &= ~PS_BACKSP;
1127 * This is not a font instruction, but rather
1128 * the next character. Prepare for overstrike.
1131 savecol = p->ps->pscol;
1136 * We found the next character, so the font instructions
1137 * for the previous one are complete.
1138 * Use them and print it.
1144 * Do not print the current character yet because font
1145 * instructions might follow; only remember the character.
1146 * It will get printed later from ps_plast().
1152 * For an overstrike, back up to the previous position.
1153 * If the previous character is wider than any it overstrikes,
1154 * remember the current position, because it might also be
1155 * wider than all that will overstrike it.
1158 if (savecol != SIZE_MAX) {
1159 if (p->ps->pscolnext < p->ps->pscol)
1160 p->ps->pscolnext = p->ps->pscol;
1162 p->ps->pscol = savecol;
1163 p->ps->flags &= ~PS_BACKSP;
1165 p->ps->pscolnext = 0;
1169 ps_advance(struct termp *p, size_t len)
1173 * Advance some spaces. This can probably be made smarter,
1174 * i.e., to have multiple space-separated words in the same
1175 * scope, but this is easier: just close out the current scope
1176 * and readjust our column settings.
1181 p->ps->pscol += len;
1185 ps_endline(struct termp *p)
1188 /* Close out any scopes we have open: we're at eoln. */
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.
1199 if (PS_MARGINS & p->ps->flags)
1204 p->ps->pscol = p->ps->left;
1206 /* If we haven't printed anything, return. */
1208 if (PS_NEWPAGE & p->ps->flags)
1212 * Put us down a line. If we're at the page bottom, spit out a
1213 * showpage and restart our row.
1216 if (p->ps->psrow >= p->ps->lineheight + p->ps->bottom) {
1217 p->ps->psrow -= p->ps->lineheight;
1225 ps_setfont(struct termp *p, enum termfont f)
1228 assert(f < TERMFONT__MAX);
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.
1236 if (PS_NEWPAGE & p->ps->flags)
1239 if (TERMTYPE_PS == p->type)
1240 ps_printf(p, "/%s %zu selectfont\n",
1241 fonts[(int)f].name, p->ps->scale);
1243 ps_printf(p, "/F%d %zu Tf\n",
1244 (int)f, p->ps->scale);
1248 ps_width(const struct termp *p, int c)
1251 if (c <= 32 || c - 32 >= MAXCHAR)
1256 return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx;
1260 ps_hspan(const struct termp *p, const struct roffsu *su)
1265 * All of these measurements are derived by converting from the
1266 * native measurement to AFM units.
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
1277 r = PNT2AFM(p, su->scale * 72.0 / 240.0);
1280 r = PNT2AFM(p, su->scale * 72.0 / 2.54);
1284 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx;
1288 fonts[(int)TERMFONT_NONE].gly[110 - 32].wx;
1291 r = PNT2AFM(p, su->scale * 72.0);
1295 fonts[(int)TERMFONT_NONE].gly[109 - 32].wx / 100.0;
1298 r = PNT2AFM(p, su->scale * 12.0);
1301 r = PNT2AFM(p, su->scale * 1.0);
1304 r = su->scale * p->ps->lineheight;
1315 ps_growbuf(struct termp *p, size_t sz)
1317 if (p->ps->psmargcur + sz <= p->ps->psmargsz)
1320 if (sz < PS_BUFSLOP)
1323 p->ps->psmargsz += sz;
1324 p->ps->psmarg = mandoc_realloc(p->ps->psmarg, p->ps->psmargsz);