Annotation of src/usr.bin/mandoc/term.c, Revision 1.48
1.48 ! schwarze 1: /* $Id: term.c,v 1.47 2010/08/20 00:53:35 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);
1.47 schwarze 82: exit(MANDOCLEVEL_SYSERR);
1.19 schwarze 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: }
1.48 ! schwarze 273:
! 274: /*
! 275: * If there was trailing white space, it was not printed;
! 276: * so reset the cursor position accordingly.
! 277: */
! 278: vis -= vbl;
1.18 schwarze 279:
1.9 schwarze 280: p->col = 0;
1.26 schwarze 281: p->overstep = 0;
1.1 kristaps 282:
1.9 schwarze 283: if ( ! (TERMP_NOBREAK & p->flags)) {
1.29 schwarze 284: p->viscol = 0;
1.37 schwarze 285: (*p->endline)(p);
1.1 kristaps 286: return;
287: }
288:
1.9 schwarze 289: if (TERMP_HANG & p->flags) {
290: /* We need one blank after the tag. */
1.26 schwarze 291: p->overstep = /* LINTED */
1.42 schwarze 292: vis - maxvis + (*p->width)(p, ' ');
1.9 schwarze 293:
294: /*
295: * Behave exactly the same way as groff:
296: * If we have overstepped the margin, temporarily move
297: * it to the right and flag the rest of the line to be
298: * shorter.
299: * If we landed right at the margin, be happy.
300: * If we are one step before the margin, temporarily
301: * move it one step LEFT and flag the rest of the line
302: * to be longer.
303: */
1.26 schwarze 304: if (p->overstep >= -1) {
305: assert((int)maxvis + p->overstep >= 0);
1.9 schwarze 306: /* LINTED */
1.26 schwarze 307: maxvis += p->overstep;
1.9 schwarze 308: } else
1.26 schwarze 309: p->overstep = 0;
1.9 schwarze 310:
311: } else if (TERMP_DANGLE & p->flags)
312: return;
1.1 kristaps 313:
1.9 schwarze 314: /* Right-pad. */
315: if (maxvis > vis + /* LINTED */
1.42 schwarze 316: ((TERMP_TWOSPACE & p->flags) ?
317: (*p->width)(p, ' ') : 0)) {
1.29 schwarze 318: p->viscol += maxvis - vis;
1.37 schwarze 319: (*p->advance)(p, maxvis - vis);
320: vis += (maxvis - vis);
1.29 schwarze 321: } else { /* ...or newline break. */
1.37 schwarze 322: (*p->endline)(p);
1.29 schwarze 323: p->viscol = p->rmargin;
1.37 schwarze 324: (*p->advance)(p, p->rmargin);
1.9 schwarze 325: }
1.1 kristaps 326: }
327:
328:
329: /*
330: * A newline only breaks an existing line; it won't assert vertical
331: * space. All data in the output buffer is flushed prior to the newline
332: * assertion.
333: */
334: void
335: term_newln(struct termp *p)
336: {
337:
338: p->flags |= TERMP_NOSPACE;
1.29 schwarze 339: if (0 == p->col && 0 == p->viscol) {
1.1 kristaps 340: p->flags &= ~TERMP_NOLPAD;
341: return;
342: }
343: term_flushln(p);
344: p->flags &= ~TERMP_NOLPAD;
345: }
346:
347:
348: /*
349: * Asserts a vertical space (a full, empty line-break between lines).
350: * Note that if used twice, this will cause two blank spaces and so on.
351: * All data in the output buffer is flushed prior to the newline
352: * assertion.
353: */
354: void
355: term_vspace(struct termp *p)
356: {
357:
358: term_newln(p);
1.29 schwarze 359: p->viscol = 0;
1.37 schwarze 360: (*p->endline)(p);
1.1 kristaps 361: }
362:
363:
364: static void
1.45 schwarze 365: spec(struct termp *p, enum roffdeco d, const char *word, size_t len)
1.1 kristaps 366: {
367: const char *rhs;
368: size_t sz;
369:
1.45 schwarze 370: rhs = chars_spec2str(p->symtab, word, len, &sz);
1.20 schwarze 371: if (rhs)
372: encode(p, rhs, sz);
1.45 schwarze 373: else if (DECO_SSPECIAL == d)
374: encode(p, word, len);
1.11 schwarze 375: }
376:
377:
378: static void
1.20 schwarze 379: res(struct termp *p, const char *word, size_t len)
1.11 schwarze 380: {
381: const char *rhs;
382: size_t sz;
383:
1.45 schwarze 384: rhs = chars_res2str(p->symtab, word, len, &sz);
1.20 schwarze 385: if (rhs)
386: encode(p, rhs, sz);
387: }
388:
389:
390: void
391: term_fontlast(struct termp *p)
392: {
393: enum termfont f;
1.11 schwarze 394:
1.20 schwarze 395: f = p->fontl;
396: p->fontl = p->fontq[p->fonti];
397: p->fontq[p->fonti] = f;
398: }
399:
400:
401: void
402: term_fontrepl(struct termp *p, enum termfont f)
403: {
404:
405: p->fontl = p->fontq[p->fonti];
406: p->fontq[p->fonti] = f;
1.1 kristaps 407: }
408:
409:
1.20 schwarze 410: void
411: term_fontpush(struct termp *p, enum termfont f)
1.1 kristaps 412: {
1.7 schwarze 413:
1.20 schwarze 414: assert(p->fonti + 1 < 10);
415: p->fontl = p->fontq[p->fonti];
416: p->fontq[++p->fonti] = f;
417: }
1.1 kristaps 418:
419:
1.20 schwarze 420: const void *
421: term_fontq(struct termp *p)
422: {
1.1 kristaps 423:
1.20 schwarze 424: return(&p->fontq[p->fonti]);
425: }
1.1 kristaps 426:
427:
1.20 schwarze 428: enum termfont
429: term_fonttop(struct termp *p)
430: {
1.1 kristaps 431:
1.20 schwarze 432: return(p->fontq[p->fonti]);
433: }
1.7 schwarze 434:
435:
1.20 schwarze 436: void
437: term_fontpopq(struct termp *p, const void *key)
438: {
1.1 kristaps 439:
1.20 schwarze 440: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
441: p->fonti--;
442: assert(p->fonti >= 0);
443: }
1.1 kristaps 444:
445:
1.20 schwarze 446: void
447: term_fontpop(struct termp *p)
448: {
1.1 kristaps 449:
1.20 schwarze 450: assert(p->fonti);
451: p->fonti--;
1.1 kristaps 452: }
453:
454:
455: /*
456: * Handle pwords, partial words, which may be either a single word or a
457: * phrase that cannot be broken down (such as a literal string). This
458: * handles word styling.
459: */
1.7 schwarze 460: void
461: term_word(struct termp *p, const char *word)
1.1 kristaps 462: {
1.20 schwarze 463: const char *sv, *seq;
464: int sz;
465: size_t ssz;
466: enum roffdeco deco;
1.1 kristaps 467:
1.14 schwarze 468: sv = word;
469:
1.20 schwarze 470: if (word[0] && '\0' == word[1])
1.14 schwarze 471: switch (word[0]) {
472: case('.'):
473: /* FALLTHROUGH */
474: case(','):
475: /* FALLTHROUGH */
476: case(';'):
477: /* FALLTHROUGH */
478: case(':'):
479: /* FALLTHROUGH */
480: case('?'):
481: /* FALLTHROUGH */
482: case('!'):
483: /* FALLTHROUGH */
484: case(')'):
485: /* FALLTHROUGH */
486: case(']'):
487: if ( ! (TERMP_IGNDELIM & p->flags))
488: p->flags |= TERMP_NOSPACE;
489: break;
490: default:
491: break;
492: }
1.1 kristaps 493:
1.31 schwarze 494: if ( ! (TERMP_NOSPACE & p->flags)) {
1.40 schwarze 495: if ( ! (TERMP_KEEP & p->flags)) {
496: if (TERMP_PREKEEP & p->flags)
497: p->flags |= TERMP_KEEP;
1.31 schwarze 498: bufferc(p, ' ');
1.40 schwarze 499: if (TERMP_SENTENCE & p->flags)
500: bufferc(p, ' ');
501: } else
502: bufferc(p, ASCII_NBRSP);
1.31 schwarze 503: }
1.1 kristaps 504:
505: if ( ! (p->flags & TERMP_NONOSPACE))
506: p->flags &= ~TERMP_NOSPACE;
1.46 schwarze 507: else
508: p->flags |= TERMP_NOSPACE;
1.1 kristaps 509:
1.31 schwarze 510: p->flags &= ~TERMP_SENTENCE;
511:
1.45 schwarze 512: while (*word) {
513: if ((ssz = strcspn(word, "\\")) > 0)
514: encode(p, word, ssz);
1.20 schwarze 515:
1.45 schwarze 516: word += ssz;
517: if ('\\' != *word)
1.20 schwarze 518: continue;
519:
520: seq = ++word;
521: sz = a2roffdeco(&deco, &seq, &ssz);
522:
523: switch (deco) {
524: case (DECO_RESERVED):
525: res(p, seq, ssz);
526: break;
527: case (DECO_SPECIAL):
1.45 schwarze 528: /* FALLTHROUGH */
529: case (DECO_SSPECIAL):
530: spec(p, deco, seq, ssz);
1.20 schwarze 531: break;
532: case (DECO_BOLD):
533: term_fontrepl(p, TERMFONT_BOLD);
534: break;
535: case (DECO_ITALIC):
536: term_fontrepl(p, TERMFONT_UNDER);
537: break;
538: case (DECO_ROMAN):
539: term_fontrepl(p, TERMFONT_NONE);
540: break;
541: case (DECO_PREVIOUS):
542: term_fontlast(p);
543: break;
544: default:
545: break;
546: }
547:
548: word += sz;
549: if (DECO_NOSPACE == deco && '\0' == *word)
550: p->flags |= TERMP_NOSPACE;
551: }
1.1 kristaps 552:
1.31 schwarze 553: /*
554: * Note that we don't process the pipe: the parser sees it as
555: * punctuation, but we don't in terms of typography.
556: */
1.45 schwarze 557: if (sv[0] && '\0' == sv[1])
1.14 schwarze 558: switch (sv[0]) {
559: case('('):
560: /* FALLTHROUGH */
561: case('['):
562: p->flags |= TERMP_NOSPACE;
563: break;
564: default:
565: break;
566: }
1.1 kristaps 567: }
568:
569:
570: static void
1.20 schwarze 571: adjbuf(struct termp *p, size_t sz)
1.1 kristaps 572: {
573:
1.20 schwarze 574: if (0 == p->maxcols)
575: p->maxcols = 1024;
576: while (sz >= p->maxcols)
577: p->maxcols <<= 2;
578:
579: p->buf = realloc(p->buf, p->maxcols);
580: if (NULL == p->buf) {
581: perror(NULL);
1.47 schwarze 582: exit(MANDOCLEVEL_SYSERR);
1.1 kristaps 583: }
584: }
585:
1.4 schwarze 586:
587: static void
1.20 schwarze 588: bufferc(struct termp *p, char c)
589: {
590:
591: if (p->col + 1 >= p->maxcols)
592: adjbuf(p, p->col + 1);
593:
594: p->buf[(int)p->col++] = c;
595: }
596:
597:
598: static void
599: encode(struct termp *p, const char *word, size_t sz)
1.4 schwarze 600: {
1.20 schwarze 601: enum termfont f;
602: int i;
603:
604: /*
605: * Encode and buffer a string of characters. If the current
606: * font mode is unset, buffer directly, else encode then buffer
607: * character by character.
608: */
609:
1.38 schwarze 610: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.46 schwarze 611: if (p->col + sz >= p->maxcols)
612: adjbuf(p, p->col + sz);
613: memcpy(&p->buf[(int)p->col], word, sz);
614: p->col += sz;
1.20 schwarze 615: return;
616: }
617:
1.46 schwarze 618: /* Pre-buffer, assuming worst-case. */
619:
620: if (p->col + 1 + (sz * 3) >= p->maxcols)
621: adjbuf(p, p->col + 1 + (sz * 3));
622:
1.20 schwarze 623: for (i = 0; i < (int)sz; i++) {
624: if ( ! isgraph((u_char)word[i])) {
1.46 schwarze 625: p->buf[(int)p->col++] = word[i];
1.20 schwarze 626: continue;
1.4 schwarze 627: }
1.20 schwarze 628:
629: if (TERMFONT_UNDER == f)
1.46 schwarze 630: p->buf[(int)p->col++] = '_';
1.20 schwarze 631: else
1.46 schwarze 632: p->buf[(int)p->col++] = word[i];
1.20 schwarze 633:
1.46 schwarze 634: p->buf[(int)p->col++] = 8;
635: p->buf[(int)p->col++] = word[i];
1.4 schwarze 636: }
637: }
1.16 schwarze 638:
639:
640: size_t
1.39 schwarze 641: term_len(const struct termp *p, size_t sz)
642: {
643:
644: return((*p->width)(p, ' ') * sz);
645: }
646:
647:
648: size_t
649: term_strlen(const struct termp *p, const char *cp)
650: {
651: size_t sz;
652:
653: for (sz = 0; *cp; cp++)
654: sz += (*p->width)(p, *cp);
655:
656: return(sz);
657: }
658:
659:
1.44 schwarze 660: /* ARGSUSED */
1.39 schwarze 661: size_t
662: term_vspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 663: {
664: double r;
665:
666: switch (su->unit) {
667: case (SCALE_CM):
668: r = su->scale * 2;
669: break;
670: case (SCALE_IN):
671: r = su->scale * 6;
672: break;
673: case (SCALE_PC):
674: r = su->scale;
675: break;
676: case (SCALE_PT):
677: r = su->scale / 8;
678: break;
679: case (SCALE_MM):
680: r = su->scale / 1000;
681: break;
682: case (SCALE_VS):
683: r = su->scale;
684: break;
685: default:
686: r = su->scale - 1;
687: break;
688: }
689:
690: if (r < 0.0)
691: r = 0.0;
692: return(/* LINTED */(size_t)
693: r);
694: }
695:
696:
697: size_t
1.39 schwarze 698: term_hspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 699: {
1.44 schwarze 700: double v;
1.16 schwarze 701:
1.44 schwarze 702: v = ((*p->hspan)(p, su));
703: if (v < 0.0)
704: v = 0.0;
705: return((size_t) /* LINTED */
706: v);
1.16 schwarze 707: }
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