Annotation of src/usr.bin/mandoc/term.c, Revision 1.58
1.58 ! schwarze 1: /* $Id: term.c,v 1.57 2011/04/21 22:59:54 schwarze Exp $ */
1.1 kristaps 2: /*
1.44 schwarze 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.56 schwarze 4: * Copyright (c) 2010, 2011 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"
1.16 schwarze 28: #include "out.h"
1.1 kristaps 29: #include "term.h"
1.16 schwarze 30: #include "main.h"
1.1 kristaps 31:
1.45 schwarze 32: static void spec(struct termp *, enum roffdeco,
33: const char *, size_t);
1.20 schwarze 34: static void res(struct termp *, const char *, size_t);
35: static void bufferc(struct termp *, char);
36: static void adjbuf(struct termp *p, size_t);
37: static void encode(struct termp *, const char *, size_t);
1.1 kristaps 38:
39:
1.37 schwarze 40: void
41: term_free(struct termp *p)
1.1 kristaps 42: {
43:
1.37 schwarze 44: if (p->buf)
45: free(p->buf);
46: if (p->symtab)
47: chars_free(p->symtab);
48:
49: free(p);
1.1 kristaps 50: }
51:
52:
1.13 schwarze 53: void
1.37 schwarze 54: term_begin(struct termp *p, term_margin head,
55: term_margin foot, const void *arg)
1.1 kristaps 56: {
57:
1.37 schwarze 58: p->headf = head;
59: p->footf = foot;
60: p->argf = arg;
61: (*p->begin)(p);
1.1 kristaps 62: }
63:
64:
1.37 schwarze 65: void
66: term_end(struct termp *p)
1.1 kristaps 67: {
68:
1.37 schwarze 69: (*p->end)(p);
1.1 kristaps 70: }
71:
72:
1.37 schwarze 73: struct termp *
74: term_alloc(enum termenc enc)
1.1 kristaps 75: {
1.36 schwarze 76: struct termp *p;
1.1 kristaps 77:
1.57 schwarze 78: p = mandoc_calloc(1, sizeof(struct termp));
1.1 kristaps 79: p->enc = enc;
80: return(p);
81: }
82:
83:
84: /*
85: * Flush a line of text. A "line" is loosely defined as being something
86: * that should be followed by a newline, regardless of whether it's
87: * broken apart by newlines getting there. A line can also be a
1.27 schwarze 88: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
89: * not have a trailing newline.
1.1 kristaps 90: *
1.27 schwarze 91: * The following flags may be specified:
1.1 kristaps 92: *
93: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
94: * offset value. This is useful when doing columnar lists where the
95: * prior column has right-padded.
96: *
97: * - TERMP_NOBREAK: this is the most important and is used when making
98: * columns. In short: don't print a newline and instead pad to the
99: * right margin. Used in conjunction with TERMP_NOLPAD.
100: *
1.9 schwarze 101: * - TERMP_TWOSPACE: when padding, make sure there are at least two
102: * space characters of padding. Otherwise, rather break the line.
103: *
1.6 schwarze 104: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
105: * the line is overrun, and don't pad-right if it's underrun.
106: *
107: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
108: * overruning, instead save the position and continue at that point
109: * when the next invocation.
1.1 kristaps 110: *
111: * In-line line breaking:
112: *
113: * If TERMP_NOBREAK is specified and the line overruns the right
114: * margin, it will break and pad-right to the right margin after
115: * writing. If maxrmargin is violated, it will break and continue
1.19 schwarze 116: * writing from the right-margin, which will lead to the above scenario
117: * upon exit. Otherwise, the line will break at the right margin.
1.1 kristaps 118: */
119: void
120: term_flushln(struct termp *p)
121: {
1.19 schwarze 122: int i; /* current input position in p->buf */
123: size_t vis; /* current visual position on output */
124: size_t vbl; /* number of blanks to prepend to output */
1.33 schwarze 125: size_t vend; /* end of word visual position on output */
1.19 schwarze 126: size_t bp; /* visual right border position */
1.51 schwarze 127: size_t dv; /* temporary for visual pos calculations */
1.42 schwarze 128: int j; /* temporary loop index for p->buf */
129: int jhy; /* last hyph before overflow w/r/t j */
130: size_t maxvis; /* output position of visible boundary */
131: size_t mmax; /* used in calculating bp */
1.1 kristaps 132:
133: /*
134: * First, establish the maximum columns of "visible" content.
135: * This is usually the difference between the right-margin and
136: * an indentation, but can be, for tagged lists or columns, a
1.19 schwarze 137: * small set of values.
1.1 kristaps 138: */
1.54 schwarze 139: assert (p->rmargin >= p->offset);
1.53 schwarze 140: dv = p->rmargin - p->offset;
141: maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
142: dv = p->maxrmargin - p->offset;
143: mmax = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
1.9 schwarze 144:
1.1 kristaps 145: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.19 schwarze 146:
1.33 schwarze 147: /*
148: * Indent the first line of a paragraph.
149: */
1.53 schwarze 150: vbl = p->flags & TERMP_NOLPAD ? (size_t)0 : p->offset;
1.33 schwarze 151:
1.53 schwarze 152: vis = vend = 0;
153: i = 0;
1.19 schwarze 154:
1.22 schwarze 155: while (i < (int)p->col) {
156: /*
1.42 schwarze 157: * Handle literal tab characters: collapse all
158: * subsequent tabs into a single huge set of spaces.
1.30 schwarze 159: */
1.49 schwarze 160: while (i < (int)p->col && '\t' == p->buf[i]) {
1.42 schwarze 161: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.30 schwarze 162: vbl += vend - vis;
163: vis = vend;
1.49 schwarze 164: i++;
1.30 schwarze 165: }
1.22 schwarze 166:
1.1 kristaps 167: /*
168: * Count up visible word characters. Control sequences
169: * (starting with the CSI) aren't counted. A space
170: * generates a non-printing word, which is valid (the
171: * space is printed according to regular spacing rules).
172: */
173:
1.49 schwarze 174: for (j = i, jhy = 0; j < (int)p->col; j++) {
1.30 schwarze 175: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.1 kristaps 176: break;
1.42 schwarze 177:
178: /* Back over the the last printed character. */
179: if (8 == p->buf[j]) {
180: assert(j);
181: vend -= (*p->width)(p, p->buf[j - 1]);
182: continue;
183: }
184:
185: /* Regular word. */
186: /* Break at the hyphen point if we overrun. */
187: if (vend > vis && vend < bp &&
188: ASCII_HYPH == p->buf[j])
189: jhy = j;
190:
191: vend += (*p->width)(p, p->buf[j]);
1.1 kristaps 192: }
193:
194: /*
1.5 schwarze 195: * Find out whether we would exceed the right margin.
1.33 schwarze 196: * If so, break to the next line.
1.5 schwarze 197: */
1.33 schwarze 198: if (vend > bp && 0 == jhy && vis > 0) {
1.22 schwarze 199: vend -= vis;
1.37 schwarze 200: (*p->endline)(p);
1.5 schwarze 201: if (TERMP_NOBREAK & p->flags) {
1.29 schwarze 202: p->viscol = p->rmargin;
1.37 schwarze 203: (*p->advance)(p, p->rmargin);
1.22 schwarze 204: vend += p->rmargin - p->offset;
1.5 schwarze 205: } else {
1.33 schwarze 206: p->viscol = 0;
207: vbl = p->offset;
1.5 schwarze 208: }
1.33 schwarze 209:
1.26 schwarze 210: /* Remove the p->overstep width. */
1.33 schwarze 211:
1.53 schwarze 212: bp += (size_t)p->overstep;
1.26 schwarze 213: p->overstep = 0;
1.1 kristaps 214: }
1.30 schwarze 215:
1.33 schwarze 216: /* Write out the [remaining] word. */
1.1 kristaps 217: for ( ; i < (int)p->col; i++) {
1.25 schwarze 218: if (vend > bp && jhy > 0 && i > jhy)
1.30 schwarze 219: break;
220: if ('\t' == p->buf[i])
1.1 kristaps 221: break;
1.22 schwarze 222: if (' ' == p->buf[i]) {
1.46 schwarze 223: j = i;
224: while (' ' == p->buf[i])
1.33 schwarze 225: i++;
1.53 schwarze 226: dv = (size_t)(i - j) * (*p->width)(p, ' ');
1.51 schwarze 227: vbl += dv;
228: vend += dv;
1.22 schwarze 229: break;
230: }
1.33 schwarze 231: if (ASCII_NBRSP == p->buf[i]) {
1.42 schwarze 232: vbl += (*p->width)(p, ' ');
1.33 schwarze 233: continue;
234: }
235:
236: /*
237: * Now we definitely know there will be
238: * printable characters to output,
239: * so write preceding white space now.
240: */
241: if (vbl) {
1.37 schwarze 242: (*p->advance)(p, vbl);
1.33 schwarze 243: p->viscol += vbl;
244: vbl = 0;
245: }
1.35 schwarze 246:
1.42 schwarze 247: if (ASCII_HYPH == p->buf[i]) {
1.37 schwarze 248: (*p->letter)(p, '-');
1.42 schwarze 249: p->viscol += (*p->width)(p, '-');
250: } else {
1.37 schwarze 251: (*p->letter)(p, p->buf[i]);
1.42 schwarze 252: p->viscol += (*p->width)(p, p->buf[i]);
253: }
1.1 kristaps 254: }
1.22 schwarze 255: vis = vend;
1.1 kristaps 256: }
1.48 schwarze 257:
258: /*
259: * If there was trailing white space, it was not printed;
260: * so reset the cursor position accordingly.
261: */
262: vis -= vbl;
1.18 schwarze 263:
1.9 schwarze 264: p->col = 0;
1.26 schwarze 265: p->overstep = 0;
1.1 kristaps 266:
1.9 schwarze 267: if ( ! (TERMP_NOBREAK & p->flags)) {
1.29 schwarze 268: p->viscol = 0;
1.37 schwarze 269: (*p->endline)(p);
1.1 kristaps 270: return;
271: }
272:
1.9 schwarze 273: if (TERMP_HANG & p->flags) {
274: /* We need one blank after the tag. */
1.53 schwarze 275: p->overstep = (int)(vis - maxvis + (*p->width)(p, ' '));
1.9 schwarze 276:
277: /*
278: * Behave exactly the same way as groff:
279: * If we have overstepped the margin, temporarily move
280: * it to the right and flag the rest of the line to be
281: * shorter.
282: * If we landed right at the margin, be happy.
283: * If we are one step before the margin, temporarily
284: * move it one step LEFT and flag the rest of the line
285: * to be longer.
286: */
1.26 schwarze 287: if (p->overstep >= -1) {
288: assert((int)maxvis + p->overstep >= 0);
1.53 schwarze 289: maxvis += (size_t)p->overstep;
1.9 schwarze 290: } else
1.26 schwarze 291: p->overstep = 0;
1.9 schwarze 292:
293: } else if (TERMP_DANGLE & p->flags)
294: return;
1.1 kristaps 295:
1.9 schwarze 296: /* Right-pad. */
1.53 schwarze 297: if (maxvis > vis +
298: ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
1.29 schwarze 299: p->viscol += maxvis - vis;
1.37 schwarze 300: (*p->advance)(p, maxvis - vis);
301: vis += (maxvis - vis);
1.29 schwarze 302: } else { /* ...or newline break. */
1.37 schwarze 303: (*p->endline)(p);
1.29 schwarze 304: p->viscol = p->rmargin;
1.37 schwarze 305: (*p->advance)(p, p->rmargin);
1.9 schwarze 306: }
1.1 kristaps 307: }
308:
309:
310: /*
311: * A newline only breaks an existing line; it won't assert vertical
312: * space. All data in the output buffer is flushed prior to the newline
313: * assertion.
314: */
315: void
316: term_newln(struct termp *p)
317: {
318:
319: p->flags |= TERMP_NOSPACE;
1.29 schwarze 320: if (0 == p->col && 0 == p->viscol) {
1.1 kristaps 321: p->flags &= ~TERMP_NOLPAD;
322: return;
323: }
324: term_flushln(p);
325: p->flags &= ~TERMP_NOLPAD;
326: }
327:
328:
329: /*
330: * Asserts a vertical space (a full, empty line-break between lines).
331: * Note that if used twice, this will cause two blank spaces and so on.
332: * All data in the output buffer is flushed prior to the newline
333: * assertion.
334: */
335: void
336: term_vspace(struct termp *p)
337: {
338:
339: term_newln(p);
1.29 schwarze 340: p->viscol = 0;
1.37 schwarze 341: (*p->endline)(p);
1.1 kristaps 342: }
343:
344:
345: static void
1.56 schwarze 346: numbered(struct termp *p, const char *word, size_t len)
347: {
348: const char *rhs;
349:
350: rhs = chars_num2char(word, len);
351: if (rhs)
352: encode(p, rhs, 1);
353: }
354:
355:
356: static void
1.45 schwarze 357: spec(struct termp *p, enum roffdeco d, const char *word, size_t len)
1.1 kristaps 358: {
359: const char *rhs;
360: size_t sz;
361:
1.45 schwarze 362: rhs = chars_spec2str(p->symtab, word, len, &sz);
1.20 schwarze 363: if (rhs)
364: encode(p, rhs, sz);
1.45 schwarze 365: else if (DECO_SSPECIAL == d)
366: encode(p, word, len);
1.11 schwarze 367: }
368:
369:
370: static void
1.20 schwarze 371: res(struct termp *p, const char *word, size_t len)
1.11 schwarze 372: {
373: const char *rhs;
374: size_t sz;
375:
1.45 schwarze 376: rhs = chars_res2str(p->symtab, word, len, &sz);
1.20 schwarze 377: if (rhs)
378: encode(p, rhs, sz);
379: }
380:
381:
382: void
383: term_fontlast(struct termp *p)
384: {
385: enum termfont f;
1.11 schwarze 386:
1.20 schwarze 387: f = p->fontl;
388: p->fontl = p->fontq[p->fonti];
389: p->fontq[p->fonti] = f;
390: }
391:
392:
393: void
394: term_fontrepl(struct termp *p, enum termfont f)
395: {
396:
397: p->fontl = p->fontq[p->fonti];
398: p->fontq[p->fonti] = f;
1.1 kristaps 399: }
400:
401:
1.20 schwarze 402: void
403: term_fontpush(struct termp *p, enum termfont f)
1.1 kristaps 404: {
1.7 schwarze 405:
1.20 schwarze 406: assert(p->fonti + 1 < 10);
407: p->fontl = p->fontq[p->fonti];
408: p->fontq[++p->fonti] = f;
409: }
1.1 kristaps 410:
411:
1.20 schwarze 412: const void *
413: term_fontq(struct termp *p)
414: {
1.1 kristaps 415:
1.20 schwarze 416: return(&p->fontq[p->fonti]);
417: }
1.1 kristaps 418:
419:
1.20 schwarze 420: enum termfont
421: term_fonttop(struct termp *p)
422: {
1.1 kristaps 423:
1.20 schwarze 424: return(p->fontq[p->fonti]);
425: }
1.7 schwarze 426:
427:
1.20 schwarze 428: void
429: term_fontpopq(struct termp *p, const void *key)
430: {
1.1 kristaps 431:
1.20 schwarze 432: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
433: p->fonti--;
434: assert(p->fonti >= 0);
435: }
1.1 kristaps 436:
437:
1.20 schwarze 438: void
439: term_fontpop(struct termp *p)
440: {
1.1 kristaps 441:
1.20 schwarze 442: assert(p->fonti);
443: p->fonti--;
1.1 kristaps 444: }
445:
446:
447: /*
448: * Handle pwords, partial words, which may be either a single word or a
449: * phrase that cannot be broken down (such as a literal string). This
450: * handles word styling.
451: */
1.7 schwarze 452: void
453: term_word(struct termp *p, const char *word)
1.1 kristaps 454: {
1.58 ! schwarze 455: const char *seq;
1.20 schwarze 456: size_t ssz;
457: enum roffdeco deco;
1.1 kristaps 458:
1.31 schwarze 459: if ( ! (TERMP_NOSPACE & p->flags)) {
1.40 schwarze 460: if ( ! (TERMP_KEEP & p->flags)) {
461: if (TERMP_PREKEEP & p->flags)
462: p->flags |= TERMP_KEEP;
1.31 schwarze 463: bufferc(p, ' ');
1.40 schwarze 464: if (TERMP_SENTENCE & p->flags)
465: bufferc(p, ' ');
466: } else
467: bufferc(p, ASCII_NBRSP);
1.31 schwarze 468: }
1.1 kristaps 469:
470: if ( ! (p->flags & TERMP_NONOSPACE))
471: p->flags &= ~TERMP_NOSPACE;
1.46 schwarze 472: else
473: p->flags |= TERMP_NOSPACE;
1.1 kristaps 474:
1.52 schwarze 475: p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
1.31 schwarze 476:
1.45 schwarze 477: while (*word) {
478: if ((ssz = strcspn(word, "\\")) > 0)
479: encode(p, word, ssz);
1.20 schwarze 480:
1.57 schwarze 481: word += (int)ssz;
1.45 schwarze 482: if ('\\' != *word)
1.20 schwarze 483: continue;
484:
485: seq = ++word;
1.50 schwarze 486: word += a2roffdeco(&deco, &seq, &ssz);
1.20 schwarze 487:
488: switch (deco) {
1.56 schwarze 489: case (DECO_NUMBERED):
490: numbered(p, seq, ssz);
491: break;
1.20 schwarze 492: case (DECO_RESERVED):
493: res(p, seq, ssz);
494: break;
495: case (DECO_SPECIAL):
1.45 schwarze 496: /* FALLTHROUGH */
497: case (DECO_SSPECIAL):
498: spec(p, deco, seq, ssz);
1.20 schwarze 499: break;
500: case (DECO_BOLD):
501: term_fontrepl(p, TERMFONT_BOLD);
502: break;
503: case (DECO_ITALIC):
504: term_fontrepl(p, TERMFONT_UNDER);
505: break;
506: case (DECO_ROMAN):
507: term_fontrepl(p, TERMFONT_NONE);
508: break;
509: case (DECO_PREVIOUS):
510: term_fontlast(p);
511: break;
512: default:
513: break;
514: }
515:
516: if (DECO_NOSPACE == deco && '\0' == *word)
517: p->flags |= TERMP_NOSPACE;
518: }
1.1 kristaps 519: }
520:
521:
522: static void
1.20 schwarze 523: adjbuf(struct termp *p, size_t sz)
1.1 kristaps 524: {
525:
1.20 schwarze 526: if (0 == p->maxcols)
527: p->maxcols = 1024;
528: while (sz >= p->maxcols)
529: p->maxcols <<= 2;
530:
1.57 schwarze 531: p->buf = mandoc_realloc(p->buf, p->maxcols);
1.1 kristaps 532: }
533:
1.4 schwarze 534:
535: static void
1.20 schwarze 536: bufferc(struct termp *p, char c)
537: {
538:
539: if (p->col + 1 >= p->maxcols)
540: adjbuf(p, p->col + 1);
541:
542: p->buf[(int)p->col++] = c;
543: }
544:
545:
546: static void
547: encode(struct termp *p, const char *word, size_t sz)
1.4 schwarze 548: {
1.20 schwarze 549: enum termfont f;
550: int i;
551:
552: /*
553: * Encode and buffer a string of characters. If the current
554: * font mode is unset, buffer directly, else encode then buffer
555: * character by character.
556: */
557:
1.38 schwarze 558: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.46 schwarze 559: if (p->col + sz >= p->maxcols)
560: adjbuf(p, p->col + sz);
561: memcpy(&p->buf[(int)p->col], word, sz);
562: p->col += sz;
1.20 schwarze 563: return;
564: }
565:
1.46 schwarze 566: /* Pre-buffer, assuming worst-case. */
567:
568: if (p->col + 1 + (sz * 3) >= p->maxcols)
569: adjbuf(p, p->col + 1 + (sz * 3));
570:
1.20 schwarze 571: for (i = 0; i < (int)sz; i++) {
572: if ( ! isgraph((u_char)word[i])) {
1.46 schwarze 573: p->buf[(int)p->col++] = word[i];
1.20 schwarze 574: continue;
1.4 schwarze 575: }
1.20 schwarze 576:
577: if (TERMFONT_UNDER == f)
1.46 schwarze 578: p->buf[(int)p->col++] = '_';
1.20 schwarze 579: else
1.46 schwarze 580: p->buf[(int)p->col++] = word[i];
1.20 schwarze 581:
1.46 schwarze 582: p->buf[(int)p->col++] = 8;
583: p->buf[(int)p->col++] = word[i];
1.4 schwarze 584: }
585: }
1.16 schwarze 586:
587:
588: size_t
1.39 schwarze 589: term_len(const struct termp *p, size_t sz)
590: {
591:
592: return((*p->width)(p, ' ') * sz);
593: }
594:
595:
596: size_t
597: term_strlen(const struct termp *p, const char *cp)
598: {
1.50 schwarze 599: size_t sz, ssz, rsz, i;
600: enum roffdeco d;
601: const char *seq, *rhs;
602:
603: for (sz = 0; '\0' != *cp; )
604: /*
605: * Account for escaped sequences within string length
606: * calculations. This follows the logic in term_word()
607: * as we must calculate the width of produced strings.
608: */
609: if ('\\' == *cp) {
610: seq = ++cp;
611: cp += a2roffdeco(&d, &seq, &ssz);
612:
613: switch (d) {
614: case (DECO_RESERVED):
615: rhs = chars_res2str
616: (p->symtab, seq, ssz, &rsz);
617: break;
618: case (DECO_SPECIAL):
619: /* FALLTHROUGH */
620: case (DECO_SSPECIAL):
621: rhs = chars_spec2str
622: (p->symtab, seq, ssz, &rsz);
623:
624: /* Allow for one-char escapes. */
625: if (DECO_SSPECIAL != d || rhs)
626: break;
627:
628: rhs = seq;
629: rsz = ssz;
630: break;
631: default:
632: rhs = NULL;
633: break;
634: }
1.39 schwarze 635:
1.50 schwarze 636: if (rhs)
637: for (i = 0; i < rsz; i++)
638: sz += (*p->width)(p, *rhs++);
1.55 schwarze 639: } else if (ASCII_NBRSP == *cp) {
640: sz += (*p->width)(p, ' ');
641: cp++;
642: } else if (ASCII_HYPH == *cp) {
643: sz += (*p->width)(p, '-');
644: cp++;
1.50 schwarze 645: } else
646: sz += (*p->width)(p, *cp++);
1.39 schwarze 647:
648: return(sz);
649: }
650:
651:
1.44 schwarze 652: /* ARGSUSED */
1.39 schwarze 653: size_t
654: term_vspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 655: {
656: double r;
657:
658: switch (su->unit) {
659: case (SCALE_CM):
660: r = su->scale * 2;
661: break;
662: case (SCALE_IN):
663: r = su->scale * 6;
664: break;
665: case (SCALE_PC):
666: r = su->scale;
667: break;
668: case (SCALE_PT):
669: r = su->scale / 8;
670: break;
671: case (SCALE_MM):
672: r = su->scale / 1000;
673: break;
674: case (SCALE_VS):
675: r = su->scale;
676: break;
677: default:
678: r = su->scale - 1;
679: break;
680: }
681:
682: if (r < 0.0)
683: r = 0.0;
684: return(/* LINTED */(size_t)
685: r);
686: }
687:
688:
689: size_t
1.39 schwarze 690: term_hspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 691: {
1.44 schwarze 692: double v;
1.16 schwarze 693:
1.44 schwarze 694: v = ((*p->hspan)(p, su));
695: if (v < 0.0)
696: v = 0.0;
697: return((size_t) /* LINTED */
698: v);
1.16 schwarze 699: }
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