Annotation of src/usr.bin/mandoc/term.c, Revision 1.46
1.46 ! schwarze 1: /* $Id: term.c,v 1.45 2010/07/25 18:05:54 schwarze Exp $ */
1.1 kristaps 2: /*
1.44 schwarze 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
4: * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.2 schwarze 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.
1.1 kristaps 17: */
1.20 schwarze 18: #include <sys/types.h>
19:
1.1 kristaps 20: #include <assert.h>
1.20 schwarze 21: #include <ctype.h>
1.36 schwarze 22: #include <stdint.h>
1.1 kristaps 23: #include <stdio.h>
24: #include <stdlib.h>
25: #include <string.h>
26:
1.34 schwarze 27: #include "mandoc.h"
1.15 schwarze 28: #include "chars.h"
1.16 schwarze 29: #include "out.h"
1.1 kristaps 30: #include "term.h"
1.16 schwarze 31: #include "main.h"
1.1 kristaps 32:
1.45 schwarze 33: static void spec(struct termp *, enum roffdeco,
34: const char *, size_t);
1.20 schwarze 35: static void res(struct termp *, const char *, size_t);
36: static void bufferc(struct termp *, char);
37: static void adjbuf(struct termp *p, size_t);
38: static void encode(struct termp *, const char *, size_t);
1.1 kristaps 39:
40:
1.37 schwarze 41: void
42: term_free(struct termp *p)
1.1 kristaps 43: {
44:
1.37 schwarze 45: if (p->buf)
46: free(p->buf);
47: if (p->symtab)
48: chars_free(p->symtab);
49:
50: free(p);
1.1 kristaps 51: }
52:
53:
1.13 schwarze 54: void
1.37 schwarze 55: term_begin(struct termp *p, term_margin head,
56: term_margin foot, const void *arg)
1.1 kristaps 57: {
58:
1.37 schwarze 59: p->headf = head;
60: p->footf = foot;
61: p->argf = arg;
62: (*p->begin)(p);
1.1 kristaps 63: }
64:
65:
1.37 schwarze 66: void
67: term_end(struct termp *p)
1.1 kristaps 68: {
69:
1.37 schwarze 70: (*p->end)(p);
1.1 kristaps 71: }
72:
73:
1.37 schwarze 74: struct termp *
75: term_alloc(enum termenc enc)
1.1 kristaps 76: {
1.36 schwarze 77: struct termp *p;
1.1 kristaps 78:
1.19 schwarze 79: p = calloc(1, sizeof(struct termp));
80: if (NULL == p) {
81: perror(NULL);
82: exit(EXIT_FAILURE);
83: }
1.36 schwarze 84:
1.1 kristaps 85: p->enc = enc;
86: return(p);
87: }
88:
89:
90: /*
91: * Flush a line of text. A "line" is loosely defined as being something
92: * that should be followed by a newline, regardless of whether it's
93: * broken apart by newlines getting there. A line can also be a
1.27 schwarze 94: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
95: * not have a trailing newline.
1.1 kristaps 96: *
1.27 schwarze 97: * The following flags may be specified:
1.1 kristaps 98: *
99: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
100: * offset value. This is useful when doing columnar lists where the
101: * prior column has right-padded.
102: *
103: * - TERMP_NOBREAK: this is the most important and is used when making
104: * columns. In short: don't print a newline and instead pad to the
105: * right margin. Used in conjunction with TERMP_NOLPAD.
106: *
1.9 schwarze 107: * - TERMP_TWOSPACE: when padding, make sure there are at least two
108: * space characters of padding. Otherwise, rather break the line.
109: *
1.6 schwarze 110: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
111: * the line is overrun, and don't pad-right if it's underrun.
112: *
113: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
114: * overruning, instead save the position and continue at that point
115: * when the next invocation.
1.1 kristaps 116: *
117: * In-line line breaking:
118: *
119: * If TERMP_NOBREAK is specified and the line overruns the right
120: * margin, it will break and pad-right to the right margin after
121: * writing. If maxrmargin is violated, it will break and continue
1.19 schwarze 122: * writing from the right-margin, which will lead to the above scenario
123: * upon exit. Otherwise, the line will break at the right margin.
1.1 kristaps 124: */
125: void
126: term_flushln(struct termp *p)
127: {
1.19 schwarze 128: int i; /* current input position in p->buf */
129: size_t vis; /* current visual position on output */
130: size_t vbl; /* number of blanks to prepend to output */
1.33 schwarze 131: size_t vend; /* end of word visual position on output */
1.19 schwarze 132: size_t bp; /* visual right border position */
1.42 schwarze 133: int j; /* temporary loop index for p->buf */
134: int jhy; /* last hyph before overflow w/r/t j */
135: size_t maxvis; /* output position of visible boundary */
136: size_t mmax; /* used in calculating bp */
1.1 kristaps 137:
138: /*
139: * First, establish the maximum columns of "visible" content.
140: * This is usually the difference between the right-margin and
141: * an indentation, but can be, for tagged lists or columns, a
1.19 schwarze 142: * small set of values.
1.1 kristaps 143: */
144:
145: assert(p->offset < p->rmargin);
1.9 schwarze 146:
1.26 schwarze 147: maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ?
1.19 schwarze 148: /* LINTED */
1.26 schwarze 149: 0 : p->rmargin - p->offset - p->overstep;
150: mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ?
1.19 schwarze 151: /* LINTED */
1.26 schwarze 152: 0 : p->maxrmargin - p->offset - p->overstep;
1.9 schwarze 153:
1.1 kristaps 154: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.19 schwarze 155:
1.33 schwarze 156: /*
157: * Indent the first line of a paragraph.
158: */
159: vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
160:
1.42 schwarze 161: vis = vend = i = 0;
1.19 schwarze 162:
1.22 schwarze 163: while (i < (int)p->col) {
164: /*
1.42 schwarze 165: * Handle literal tab characters: collapse all
166: * subsequent tabs into a single huge set of spaces.
1.30 schwarze 167: */
168: for (j = i; j < (int)p->col; j++) {
169: if ('\t' != p->buf[j])
170: break;
1.42 schwarze 171: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.30 schwarze 172: vbl += vend - vis;
173: vis = vend;
174: }
1.22 schwarze 175:
1.1 kristaps 176: /*
177: * Count up visible word characters. Control sequences
178: * (starting with the CSI) aren't counted. A space
179: * generates a non-printing word, which is valid (the
180: * space is printed according to regular spacing rules).
181: */
182:
183: /* LINTED */
1.30 schwarze 184: for (jhy = 0; j < (int)p->col; j++) {
185: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.1 kristaps 186: break;
1.42 schwarze 187:
188: /* Back over the the last printed character. */
189: if (8 == p->buf[j]) {
190: assert(j);
191: vend -= (*p->width)(p, p->buf[j - 1]);
192: continue;
193: }
194:
195: /* Regular word. */
196: /* Break at the hyphen point if we overrun. */
197: if (vend > vis && vend < bp &&
198: ASCII_HYPH == p->buf[j])
199: jhy = j;
200:
201: vend += (*p->width)(p, p->buf[j]);
1.1 kristaps 202: }
203:
204: /*
1.5 schwarze 205: * Find out whether we would exceed the right margin.
1.33 schwarze 206: * If so, break to the next line.
1.5 schwarze 207: */
1.33 schwarze 208: if (vend > bp && 0 == jhy && vis > 0) {
1.22 schwarze 209: vend -= vis;
1.37 schwarze 210: (*p->endline)(p);
1.5 schwarze 211: if (TERMP_NOBREAK & p->flags) {
1.29 schwarze 212: p->viscol = p->rmargin;
1.37 schwarze 213: (*p->advance)(p, p->rmargin);
1.22 schwarze 214: vend += p->rmargin - p->offset;
1.5 schwarze 215: } else {
1.33 schwarze 216: p->viscol = 0;
217: vbl = p->offset;
1.5 schwarze 218: }
1.33 schwarze 219:
1.26 schwarze 220: /* Remove the p->overstep width. */
1.33 schwarze 221:
1.18 schwarze 222: bp += (int)/* LINTED */
1.26 schwarze 223: p->overstep;
224: p->overstep = 0;
1.1 kristaps 225: }
226:
1.3 schwarze 227: /*
1.30 schwarze 228: * Skip leading tabs, they were handled above.
229: */
230: while (i < (int)p->col && '\t' == p->buf[i])
231: i++;
232:
1.33 schwarze 233: /* Write out the [remaining] word. */
1.1 kristaps 234: for ( ; i < (int)p->col; i++) {
1.25 schwarze 235: if (vend > bp && jhy > 0 && i > jhy)
1.30 schwarze 236: break;
237: if ('\t' == p->buf[i])
1.1 kristaps 238: break;
1.22 schwarze 239: if (' ' == p->buf[i]) {
1.46 ! schwarze 240: j = i;
! 241: while (' ' == p->buf[i])
1.33 schwarze 242: i++;
1.46 ! schwarze 243: vbl += (i - j) * (*p->width)(p, ' ');
1.22 schwarze 244: break;
245: }
1.33 schwarze 246: if (ASCII_NBRSP == p->buf[i]) {
1.42 schwarze 247: vbl += (*p->width)(p, ' ');
1.33 schwarze 248: continue;
249: }
250:
251: /*
252: * Now we definitely know there will be
253: * printable characters to output,
254: * so write preceding white space now.
255: */
256: if (vbl) {
1.37 schwarze 257: (*p->advance)(p, vbl);
1.33 schwarze 258: p->viscol += vbl;
259: vbl = 0;
260: }
1.35 schwarze 261:
1.42 schwarze 262: if (ASCII_HYPH == p->buf[i]) {
1.37 schwarze 263: (*p->letter)(p, '-');
1.42 schwarze 264: p->viscol += (*p->width)(p, '-');
265: } else {
1.37 schwarze 266: (*p->letter)(p, p->buf[i]);
1.42 schwarze 267: p->viscol += (*p->width)(p, p->buf[i]);
268: }
1.1 kristaps 269: }
1.33 schwarze 270: vend += vbl;
1.22 schwarze 271: vis = vend;
1.1 kristaps 272: }
1.18 schwarze 273:
1.9 schwarze 274: p->col = 0;
1.26 schwarze 275: p->overstep = 0;
1.1 kristaps 276:
1.9 schwarze 277: if ( ! (TERMP_NOBREAK & p->flags)) {
1.29 schwarze 278: p->viscol = 0;
1.37 schwarze 279: (*p->endline)(p);
1.1 kristaps 280: return;
281: }
282:
1.9 schwarze 283: if (TERMP_HANG & p->flags) {
284: /* We need one blank after the tag. */
1.26 schwarze 285: p->overstep = /* LINTED */
1.42 schwarze 286: vis - maxvis + (*p->width)(p, ' ');
1.9 schwarze 287:
288: /*
289: * Behave exactly the same way as groff:
290: * If we have overstepped the margin, temporarily move
291: * it to the right and flag the rest of the line to be
292: * shorter.
293: * If we landed right at the margin, be happy.
294: * If we are one step before the margin, temporarily
295: * move it one step LEFT and flag the rest of the line
296: * to be longer.
297: */
1.26 schwarze 298: if (p->overstep >= -1) {
299: assert((int)maxvis + p->overstep >= 0);
1.9 schwarze 300: /* LINTED */
1.26 schwarze 301: maxvis += p->overstep;
1.9 schwarze 302: } else
1.26 schwarze 303: p->overstep = 0;
1.9 schwarze 304:
305: } else if (TERMP_DANGLE & p->flags)
306: return;
1.1 kristaps 307:
1.9 schwarze 308: /* Right-pad. */
309: if (maxvis > vis + /* LINTED */
1.42 schwarze 310: ((TERMP_TWOSPACE & p->flags) ?
311: (*p->width)(p, ' ') : 0)) {
1.29 schwarze 312: p->viscol += maxvis - vis;
1.37 schwarze 313: (*p->advance)(p, maxvis - vis);
314: vis += (maxvis - vis);
1.29 schwarze 315: } else { /* ...or newline break. */
1.37 schwarze 316: (*p->endline)(p);
1.29 schwarze 317: p->viscol = p->rmargin;
1.37 schwarze 318: (*p->advance)(p, p->rmargin);
1.9 schwarze 319: }
1.1 kristaps 320: }
321:
322:
323: /*
324: * A newline only breaks an existing line; it won't assert vertical
325: * space. All data in the output buffer is flushed prior to the newline
326: * assertion.
327: */
328: void
329: term_newln(struct termp *p)
330: {
331:
332: p->flags |= TERMP_NOSPACE;
1.29 schwarze 333: if (0 == p->col && 0 == p->viscol) {
1.1 kristaps 334: p->flags &= ~TERMP_NOLPAD;
335: return;
336: }
337: term_flushln(p);
338: p->flags &= ~TERMP_NOLPAD;
339: }
340:
341:
342: /*
343: * Asserts a vertical space (a full, empty line-break between lines).
344: * Note that if used twice, this will cause two blank spaces and so on.
345: * All data in the output buffer is flushed prior to the newline
346: * assertion.
347: */
348: void
349: term_vspace(struct termp *p)
350: {
351:
352: term_newln(p);
1.29 schwarze 353: p->viscol = 0;
1.37 schwarze 354: (*p->endline)(p);
1.1 kristaps 355: }
356:
357:
358: static void
1.45 schwarze 359: spec(struct termp *p, enum roffdeco d, const char *word, size_t len)
1.1 kristaps 360: {
361: const char *rhs;
362: size_t sz;
363:
1.45 schwarze 364: rhs = chars_spec2str(p->symtab, word, len, &sz);
1.20 schwarze 365: if (rhs)
366: encode(p, rhs, sz);
1.45 schwarze 367: else if (DECO_SSPECIAL == d)
368: encode(p, word, len);
1.11 schwarze 369: }
370:
371:
372: static void
1.20 schwarze 373: res(struct termp *p, const char *word, size_t len)
1.11 schwarze 374: {
375: const char *rhs;
376: size_t sz;
377:
1.45 schwarze 378: rhs = chars_res2str(p->symtab, word, len, &sz);
1.20 schwarze 379: if (rhs)
380: encode(p, rhs, sz);
381: }
382:
383:
384: void
385: term_fontlast(struct termp *p)
386: {
387: enum termfont f;
1.11 schwarze 388:
1.20 schwarze 389: f = p->fontl;
390: p->fontl = p->fontq[p->fonti];
391: p->fontq[p->fonti] = f;
392: }
393:
394:
395: void
396: term_fontrepl(struct termp *p, enum termfont f)
397: {
398:
399: p->fontl = p->fontq[p->fonti];
400: p->fontq[p->fonti] = f;
1.1 kristaps 401: }
402:
403:
1.20 schwarze 404: void
405: term_fontpush(struct termp *p, enum termfont f)
1.1 kristaps 406: {
1.7 schwarze 407:
1.20 schwarze 408: assert(p->fonti + 1 < 10);
409: p->fontl = p->fontq[p->fonti];
410: p->fontq[++p->fonti] = f;
411: }
1.1 kristaps 412:
413:
1.20 schwarze 414: const void *
415: term_fontq(struct termp *p)
416: {
1.1 kristaps 417:
1.20 schwarze 418: return(&p->fontq[p->fonti]);
419: }
1.1 kristaps 420:
421:
1.20 schwarze 422: enum termfont
423: term_fonttop(struct termp *p)
424: {
1.1 kristaps 425:
1.20 schwarze 426: return(p->fontq[p->fonti]);
427: }
1.7 schwarze 428:
429:
1.20 schwarze 430: void
431: term_fontpopq(struct termp *p, const void *key)
432: {
1.1 kristaps 433:
1.20 schwarze 434: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
435: p->fonti--;
436: assert(p->fonti >= 0);
437: }
1.1 kristaps 438:
439:
1.20 schwarze 440: void
441: term_fontpop(struct termp *p)
442: {
1.1 kristaps 443:
1.20 schwarze 444: assert(p->fonti);
445: p->fonti--;
1.1 kristaps 446: }
447:
448:
449: /*
450: * Handle pwords, partial words, which may be either a single word or a
451: * phrase that cannot be broken down (such as a literal string). This
452: * handles word styling.
453: */
1.7 schwarze 454: void
455: term_word(struct termp *p, const char *word)
1.1 kristaps 456: {
1.20 schwarze 457: const char *sv, *seq;
458: int sz;
459: size_t ssz;
460: enum roffdeco deco;
1.1 kristaps 461:
1.14 schwarze 462: sv = word;
463:
1.20 schwarze 464: if (word[0] && '\0' == word[1])
1.14 schwarze 465: switch (word[0]) {
466: case('.'):
467: /* FALLTHROUGH */
468: case(','):
469: /* FALLTHROUGH */
470: case(';'):
471: /* FALLTHROUGH */
472: case(':'):
473: /* FALLTHROUGH */
474: case('?'):
475: /* FALLTHROUGH */
476: case('!'):
477: /* FALLTHROUGH */
478: case(')'):
479: /* FALLTHROUGH */
480: case(']'):
481: if ( ! (TERMP_IGNDELIM & p->flags))
482: p->flags |= TERMP_NOSPACE;
483: break;
484: default:
485: break;
486: }
1.1 kristaps 487:
1.31 schwarze 488: if ( ! (TERMP_NOSPACE & p->flags)) {
1.40 schwarze 489: if ( ! (TERMP_KEEP & p->flags)) {
490: if (TERMP_PREKEEP & p->flags)
491: p->flags |= TERMP_KEEP;
1.31 schwarze 492: bufferc(p, ' ');
1.40 schwarze 493: if (TERMP_SENTENCE & p->flags)
494: bufferc(p, ' ');
495: } else
496: bufferc(p, ASCII_NBRSP);
1.31 schwarze 497: }
1.1 kristaps 498:
499: if ( ! (p->flags & TERMP_NONOSPACE))
500: p->flags &= ~TERMP_NOSPACE;
1.46 ! schwarze 501: else
! 502: p->flags |= TERMP_NOSPACE;
1.1 kristaps 503:
1.31 schwarze 504: p->flags &= ~TERMP_SENTENCE;
505:
1.45 schwarze 506: while (*word) {
507: if ((ssz = strcspn(word, "\\")) > 0)
508: encode(p, word, ssz);
1.20 schwarze 509:
1.45 schwarze 510: word += ssz;
511: if ('\\' != *word)
1.20 schwarze 512: continue;
513:
514: seq = ++word;
515: sz = a2roffdeco(&deco, &seq, &ssz);
516:
517: switch (deco) {
518: case (DECO_RESERVED):
519: res(p, seq, ssz);
520: break;
521: case (DECO_SPECIAL):
1.45 schwarze 522: /* FALLTHROUGH */
523: case (DECO_SSPECIAL):
524: spec(p, deco, seq, ssz);
1.20 schwarze 525: break;
526: case (DECO_BOLD):
527: term_fontrepl(p, TERMFONT_BOLD);
528: break;
529: case (DECO_ITALIC):
530: term_fontrepl(p, TERMFONT_UNDER);
531: break;
532: case (DECO_ROMAN):
533: term_fontrepl(p, TERMFONT_NONE);
534: break;
535: case (DECO_PREVIOUS):
536: term_fontlast(p);
537: break;
538: default:
539: break;
540: }
541:
542: word += sz;
543: if (DECO_NOSPACE == deco && '\0' == *word)
544: p->flags |= TERMP_NOSPACE;
545: }
1.1 kristaps 546:
1.31 schwarze 547: /*
548: * Note that we don't process the pipe: the parser sees it as
549: * punctuation, but we don't in terms of typography.
550: */
1.45 schwarze 551: if (sv[0] && '\0' == sv[1])
1.14 schwarze 552: switch (sv[0]) {
553: case('('):
554: /* FALLTHROUGH */
555: case('['):
556: p->flags |= TERMP_NOSPACE;
557: break;
558: default:
559: break;
560: }
1.1 kristaps 561: }
562:
563:
564: static void
1.20 schwarze 565: adjbuf(struct termp *p, size_t sz)
1.1 kristaps 566: {
567:
1.20 schwarze 568: if (0 == p->maxcols)
569: p->maxcols = 1024;
570: while (sz >= p->maxcols)
571: p->maxcols <<= 2;
572:
573: p->buf = realloc(p->buf, p->maxcols);
574: if (NULL == p->buf) {
575: perror(NULL);
576: exit(EXIT_FAILURE);
1.1 kristaps 577: }
578: }
579:
1.4 schwarze 580:
581: static void
1.20 schwarze 582: bufferc(struct termp *p, char c)
583: {
584:
585: if (p->col + 1 >= p->maxcols)
586: adjbuf(p, p->col + 1);
587:
588: p->buf[(int)p->col++] = c;
589: }
590:
591:
592: static void
593: encode(struct termp *p, const char *word, size_t sz)
1.4 schwarze 594: {
1.20 schwarze 595: enum termfont f;
596: int i;
597:
598: /*
599: * Encode and buffer a string of characters. If the current
600: * font mode is unset, buffer directly, else encode then buffer
601: * character by character.
602: */
603:
1.38 schwarze 604: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.46 ! schwarze 605: if (p->col + sz >= p->maxcols)
! 606: adjbuf(p, p->col + sz);
! 607: memcpy(&p->buf[(int)p->col], word, sz);
! 608: p->col += sz;
1.20 schwarze 609: return;
610: }
611:
1.46 ! schwarze 612: /* Pre-buffer, assuming worst-case. */
! 613:
! 614: if (p->col + 1 + (sz * 3) >= p->maxcols)
! 615: adjbuf(p, p->col + 1 + (sz * 3));
! 616:
1.20 schwarze 617: for (i = 0; i < (int)sz; i++) {
618: if ( ! isgraph((u_char)word[i])) {
1.46 ! schwarze 619: p->buf[(int)p->col++] = word[i];
1.20 schwarze 620: continue;
1.4 schwarze 621: }
1.20 schwarze 622:
623: if (TERMFONT_UNDER == f)
1.46 ! schwarze 624: p->buf[(int)p->col++] = '_';
1.20 schwarze 625: else
1.46 ! schwarze 626: p->buf[(int)p->col++] = word[i];
1.20 schwarze 627:
1.46 ! schwarze 628: p->buf[(int)p->col++] = 8;
! 629: p->buf[(int)p->col++] = word[i];
1.4 schwarze 630: }
631: }
1.16 schwarze 632:
633:
634: size_t
1.39 schwarze 635: term_len(const struct termp *p, size_t sz)
636: {
637:
638: return((*p->width)(p, ' ') * sz);
639: }
640:
641:
642: size_t
643: term_strlen(const struct termp *p, const char *cp)
644: {
645: size_t sz;
646:
647: for (sz = 0; *cp; cp++)
648: sz += (*p->width)(p, *cp);
649:
650: return(sz);
651: }
652:
653:
1.44 schwarze 654: /* ARGSUSED */
1.39 schwarze 655: size_t
656: term_vspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 657: {
658: double r;
659:
660: switch (su->unit) {
661: case (SCALE_CM):
662: r = su->scale * 2;
663: break;
664: case (SCALE_IN):
665: r = su->scale * 6;
666: break;
667: case (SCALE_PC):
668: r = su->scale;
669: break;
670: case (SCALE_PT):
671: r = su->scale / 8;
672: break;
673: case (SCALE_MM):
674: r = su->scale / 1000;
675: break;
676: case (SCALE_VS):
677: r = su->scale;
678: break;
679: default:
680: r = su->scale - 1;
681: break;
682: }
683:
684: if (r < 0.0)
685: r = 0.0;
686: return(/* LINTED */(size_t)
687: r);
688: }
689:
690:
691: size_t
1.39 schwarze 692: term_hspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 693: {
1.44 schwarze 694: double v;
1.16 schwarze 695:
1.44 schwarze 696: v = ((*p->hspan)(p, su));
697: if (v < 0.0)
698: v = 0.0;
699: return((size_t) /* LINTED */
700: v);
1.16 schwarze 701: }
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