Annotation of mandoc/term.c, Revision 1.157
1.157 ! kristaps 1: /* $Id: term.c,v 1.156 2010/06/30 12:30:36 kristaps Exp $ */
1.1 kristaps 2: /*
1.148 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.74 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.74 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
1.128 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.126 kristaps 21: #include <sys/types.h>
22:
1.1 kristaps 23: #include <assert.h>
1.122 kristaps 24: #include <ctype.h>
1.141 kristaps 25: #include <stdint.h>
1.22 kristaps 26: #include <stdio.h>
1.1 kristaps 27: #include <stdlib.h>
28: #include <string.h>
29:
1.137 kristaps 30: #include "mandoc.h"
1.101 kristaps 31: #include "chars.h"
1.107 kristaps 32: #include "out.h"
1.71 kristaps 33: #include "term.h"
1.105 kristaps 34: #include "main.h"
1.1 kristaps 35:
1.125 kristaps 36: static void spec(struct termp *, const char *, size_t);
37: static void res(struct termp *, const char *, size_t);
38: static void buffera(struct termp *, const char *, size_t);
39: static void bufferc(struct termp *, char);
40: static void adjbuf(struct termp *p, size_t);
41: static void encode(struct termp *, const char *, size_t);
1.11 kristaps 42:
43:
1.145 kristaps 44: void
1.71 kristaps 45: term_free(struct termp *p)
1.14 kristaps 46: {
47:
1.71 kristaps 48: if (p->buf)
49: free(p->buf);
1.102 kristaps 50: if (p->symtab)
1.101 kristaps 51: chars_free(p->symtab);
1.145 kristaps 52:
1.142 kristaps 53: free(p);
54: }
55:
56:
57: void
58: term_begin(struct termp *p, term_margin head,
59: term_margin foot, const void *arg)
60: {
61:
62: p->headf = head;
63: p->footf = foot;
64: p->argf = arg;
1.146 kristaps 65: (*p->begin)(p);
1.142 kristaps 66: }
67:
68:
69: void
70: term_end(struct termp *p)
71: {
72:
1.146 kristaps 73: (*p->end)(p);
1.14 kristaps 74: }
75:
76:
1.145 kristaps 77: struct termp *
78: term_alloc(enum termenc enc)
1.14 kristaps 79: {
1.141 kristaps 80: struct termp *p;
1.14 kristaps 81:
1.117 kristaps 82: p = calloc(1, sizeof(struct termp));
83: if (NULL == p) {
1.120 kristaps 84: perror(NULL);
1.117 kristaps 85: exit(EXIT_FAILURE);
86: }
1.141 kristaps 87:
1.71 kristaps 88: p->enc = enc;
89: return(p);
1.14 kristaps 90: }
91:
92:
1.71 kristaps 93: /*
94: * Flush a line of text. A "line" is loosely defined as being something
95: * that should be followed by a newline, regardless of whether it's
96: * broken apart by newlines getting there. A line can also be a
1.130 kristaps 97: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
98: * not have a trailing newline.
1.71 kristaps 99: *
1.130 kristaps 100: * The following flags may be specified:
1.71 kristaps 101: *
102: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
103: * offset value. This is useful when doing columnar lists where the
104: * prior column has right-padded.
105: *
106: * - TERMP_NOBREAK: this is the most important and is used when making
107: * columns. In short: don't print a newline and instead pad to the
108: * right margin. Used in conjunction with TERMP_NOLPAD.
109: *
1.91 kristaps 110: * - TERMP_TWOSPACE: when padding, make sure there are at least two
111: * space characters of padding. Otherwise, rather break the line.
112: *
1.84 kristaps 113: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
114: * the line is overrun, and don't pad-right if it's underrun.
115: *
116: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
117: * overruning, instead save the position and continue at that point
118: * when the next invocation.
1.71 kristaps 119: *
120: * In-line line breaking:
121: *
122: * If TERMP_NOBREAK is specified and the line overruns the right
123: * margin, it will break and pad-right to the right margin after
124: * writing. If maxrmargin is violated, it will break and continue
1.114 kristaps 125: * writing from the right-margin, which will lead to the above scenario
126: * upon exit. Otherwise, the line will break at the right margin.
1.71 kristaps 127: */
128: void
129: term_flushln(struct termp *p)
1.53 kristaps 130: {
1.114 kristaps 131: int i; /* current input position in p->buf */
132: size_t vis; /* current visual position on output */
133: size_t vbl; /* number of blanks to prepend to output */
1.136 schwarze 134: size_t vend; /* end of word visual position on output */
1.114 kristaps 135: size_t bp; /* visual right border position */
1.152 kristaps 136: int j; /* temporary loop index for p->buf */
137: int jhy; /* last hyph before overflow w/r/t j */
138: size_t maxvis; /* output position of visible boundary */
139: size_t mmax; /* used in calculating bp */
1.53 kristaps 140:
1.71 kristaps 141: /*
142: * First, establish the maximum columns of "visible" content.
143: * This is usually the difference between the right-margin and
144: * an indentation, but can be, for tagged lists or columns, a
1.115 kristaps 145: * small set of values.
1.71 kristaps 146: */
1.53 kristaps 147:
1.71 kristaps 148: assert(p->offset < p->rmargin);
1.92 kristaps 149:
1.129 kristaps 150: maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 151: /* LINTED */
1.129 kristaps 152: 0 : p->rmargin - p->offset - p->overstep;
153: mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 154: /* LINTED */
1.129 kristaps 155: 0 : p->maxrmargin - p->offset - p->overstep;
1.92 kristaps 156:
1.71 kristaps 157: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.115 kristaps 158:
1.136 schwarze 159: /*
160: * Indent the first line of a paragraph.
161: */
162: vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
163:
1.154 kristaps 164: vis = vend = i = 0;
1.115 kristaps 165:
1.136 schwarze 166: while (i < (int)p->col) {
1.71 kristaps 167: /*
1.154 kristaps 168: * Handle literal tab characters: collapse all
169: * subsequent tabs into a single huge set of spaces.
1.138 schwarze 170: */
171: for (j = i; j < (int)p->col; j++) {
172: if ('\t' != p->buf[j])
173: break;
1.154 kristaps 174: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.138 schwarze 175: vbl += vend - vis;
176: vis = vend;
177: }
178:
179: /*
1.71 kristaps 180: * Count up visible word characters. Control sequences
181: * (starting with the CSI) aren't counted. A space
182: * generates a non-printing word, which is valid (the
183: * space is printed according to regular spacing rules).
184: */
185:
186: /* LINTED */
1.140 kristaps 187: for (jhy = 0; j < (int)p->col; j++) {
1.138 schwarze 188: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.71 kristaps 189: break;
1.154 kristaps 190:
191: /* Back over the the last printed character. */
192: if (8 == p->buf[j]) {
1.153 kristaps 193: assert(j);
194: vend -= (*p->width)(p, p->buf[j - 1]);
1.154 kristaps 195: continue;
1.153 kristaps 196: }
1.154 kristaps 197:
198: /* Regular word. */
199: /* Break at the hyphen point if we overrun. */
200: if (vend > vis && vend < bp &&
201: ASCII_HYPH == p->buf[j])
202: jhy = j;
203:
204: vend += (*p->width)(p, p->buf[j]);
1.71 kristaps 205: }
1.53 kristaps 206:
1.71 kristaps 207: /*
1.81 kristaps 208: * Find out whether we would exceed the right margin.
1.136 schwarze 209: * If so, break to the next line.
1.81 kristaps 210: */
1.140 kristaps 211: if (vend > bp && 0 == jhy && vis > 0) {
1.136 schwarze 212: vend -= vis;
1.146 kristaps 213: (*p->endline)(p);
1.81 kristaps 214: if (TERMP_NOBREAK & p->flags) {
1.139 schwarze 215: p->viscol = p->rmargin;
1.146 kristaps 216: (*p->advance)(p, p->rmargin);
1.136 schwarze 217: vend += p->rmargin - p->offset;
1.81 kristaps 218: } else {
1.139 schwarze 219: p->viscol = 0;
1.136 schwarze 220: vbl = p->offset;
1.81 kristaps 221: }
1.130 kristaps 222:
1.129 kristaps 223: /* Remove the p->overstep width. */
1.130 kristaps 224:
1.112 kristaps 225: bp += (int)/* LINTED */
1.129 kristaps 226: p->overstep;
227: p->overstep = 0;
1.71 kristaps 228: }
1.53 kristaps 229:
1.138 schwarze 230: /*
231: * Skip leading tabs, they were handled above.
232: */
233: while (i < (int)p->col && '\t' == p->buf[i])
234: i++;
235:
1.130 kristaps 236: /* Write out the [remaining] word. */
1.136 schwarze 237: for ( ; i < (int)p->col; i++) {
1.140 kristaps 238: if (vend > bp && jhy > 0 && i > jhy)
239: break;
1.138 schwarze 240: if ('\t' == p->buf[i])
241: break;
1.136 schwarze 242: if (' ' == p->buf[i]) {
243: while (' ' == p->buf[i]) {
1.153 kristaps 244: vbl += (*p->width)(p, p->buf[i]);
1.136 schwarze 245: i++;
246: }
1.71 kristaps 247: break;
1.136 schwarze 248: }
249: if (ASCII_NBRSP == p->buf[i]) {
1.153 kristaps 250: vbl += (*p->width)(p, ' ');
1.136 schwarze 251: continue;
252: }
1.130 kristaps 253:
1.136 schwarze 254: /*
255: * Now we definitely know there will be
256: * printable characters to output,
257: * so write preceding white space now.
258: */
259: if (vbl) {
1.146 kristaps 260: (*p->advance)(p, vbl);
1.139 schwarze 261: p->viscol += vbl;
1.136 schwarze 262: vbl = 0;
263: }
1.140 kristaps 264:
1.153 kristaps 265: if (ASCII_HYPH == p->buf[i]) {
1.146 kristaps 266: (*p->letter)(p, '-');
1.153 kristaps 267: p->viscol += (*p->width)(p, '-');
268: } else {
1.146 kristaps 269: (*p->letter)(p, p->buf[i]);
1.153 kristaps 270: p->viscol += (*p->width)(p, p->buf[i]);
271: }
1.136 schwarze 272: }
273: vend += vbl;
274: vis = vend;
1.71 kristaps 275: }
1.111 kristaps 276:
1.91 kristaps 277: p->col = 0;
1.129 kristaps 278: p->overstep = 0;
1.15 kristaps 279:
1.91 kristaps 280: if ( ! (TERMP_NOBREAK & p->flags)) {
1.139 schwarze 281: p->viscol = 0;
1.146 kristaps 282: (*p->endline)(p);
1.15 kristaps 283: return;
1.71 kristaps 284: }
1.15 kristaps 285:
1.91 kristaps 286: if (TERMP_HANG & p->flags) {
287: /* We need one blank after the tag. */
1.129 kristaps 288: p->overstep = /* LINTED */
1.153 kristaps 289: vis - maxvis + (*p->width)(p, ' ');
1.91 kristaps 290:
291: /*
292: * Behave exactly the same way as groff:
1.92 kristaps 293: * If we have overstepped the margin, temporarily move
294: * it to the right and flag the rest of the line to be
295: * shorter.
1.91 kristaps 296: * If we landed right at the margin, be happy.
1.92 kristaps 297: * If we are one step before the margin, temporarily
298: * move it one step LEFT and flag the rest of the line
299: * to be longer.
1.91 kristaps 300: */
1.129 kristaps 301: if (p->overstep >= -1) {
302: assert((int)maxvis + p->overstep >= 0);
1.92 kristaps 303: /* LINTED */
1.129 kristaps 304: maxvis += p->overstep;
1.92 kristaps 305: } else
1.129 kristaps 306: p->overstep = 0;
1.91 kristaps 307:
308: } else if (TERMP_DANGLE & p->flags)
309: return;
1.15 kristaps 310:
1.92 kristaps 311: /* Right-pad. */
312: if (maxvis > vis + /* LINTED */
1.154 kristaps 313: ((TERMP_TWOSPACE & p->flags) ?
314: (*p->width)(p, ' ') : 0)) {
1.139 schwarze 315: p->viscol += maxvis - vis;
1.146 kristaps 316: (*p->advance)(p, maxvis - vis);
1.142 kristaps 317: vis += (maxvis - vis);
1.139 schwarze 318: } else { /* ...or newline break. */
1.146 kristaps 319: (*p->endline)(p);
1.139 schwarze 320: p->viscol = p->rmargin;
1.146 kristaps 321: (*p->advance)(p, p->rmargin);
1.91 kristaps 322: }
1.15 kristaps 323: }
324:
325:
1.71 kristaps 326: /*
327: * A newline only breaks an existing line; it won't assert vertical
328: * space. All data in the output buffer is flushed prior to the newline
329: * assertion.
330: */
331: void
332: term_newln(struct termp *p)
1.15 kristaps 333: {
334:
1.71 kristaps 335: p->flags |= TERMP_NOSPACE;
1.139 schwarze 336: if (0 == p->col && 0 == p->viscol) {
1.71 kristaps 337: p->flags &= ~TERMP_NOLPAD;
1.15 kristaps 338: return;
1.16 kristaps 339: }
1.71 kristaps 340: term_flushln(p);
341: p->flags &= ~TERMP_NOLPAD;
1.16 kristaps 342: }
343:
344:
1.71 kristaps 345: /*
346: * Asserts a vertical space (a full, empty line-break between lines).
347: * Note that if used twice, this will cause two blank spaces and so on.
348: * All data in the output buffer is flushed prior to the newline
349: * assertion.
350: */
351: void
352: term_vspace(struct termp *p)
1.16 kristaps 353: {
354:
1.62 kristaps 355: term_newln(p);
1.139 schwarze 356: p->viscol = 0;
1.146 kristaps 357: (*p->endline)(p);
1.16 kristaps 358: }
359:
360:
1.71 kristaps 361: static void
1.125 kristaps 362: spec(struct termp *p, const char *word, size_t len)
1.17 kristaps 363: {
1.71 kristaps 364: const char *rhs;
365: size_t sz;
1.17 kristaps 366:
1.101 kristaps 367: rhs = chars_a2ascii(p->symtab, word, len, &sz);
1.125 kristaps 368: if (rhs)
369: encode(p, rhs, sz);
1.94 kristaps 370: }
371:
372:
373: static void
1.125 kristaps 374: res(struct termp *p, const char *word, size_t len)
1.94 kristaps 375: {
376: const char *rhs;
377: size_t sz;
378:
1.101 kristaps 379: rhs = chars_a2res(p->symtab, word, len, &sz);
1.125 kristaps 380: if (rhs)
381: encode(p, rhs, sz);
382: }
383:
384:
385: void
386: term_fontlast(struct termp *p)
387: {
388: enum termfont f;
389:
390: f = p->fontl;
391: p->fontl = p->fontq[p->fonti];
392: p->fontq[p->fonti] = f;
393: }
394:
395:
396: void
397: term_fontrepl(struct termp *p, enum termfont f)
398: {
399:
400: p->fontl = p->fontq[p->fonti];
401: p->fontq[p->fonti] = f;
402: }
403:
404:
405: void
406: term_fontpush(struct termp *p, enum termfont f)
407: {
408:
409: assert(p->fonti + 1 < 10);
410: p->fontl = p->fontq[p->fonti];
411: p->fontq[++p->fonti] = f;
412: }
413:
414:
415: const void *
416: term_fontq(struct termp *p)
417: {
418:
419: return(&p->fontq[p->fonti]);
420: }
421:
422:
423: enum termfont
424: term_fonttop(struct termp *p)
425: {
426:
427: return(p->fontq[p->fonti]);
428: }
429:
430:
431: void
432: term_fontpopq(struct termp *p, const void *key)
433: {
434:
435: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
436: p->fonti--;
437: assert(p->fonti >= 0);
438: }
1.94 kristaps 439:
1.125 kristaps 440:
441: void
442: term_fontpop(struct termp *p)
443: {
444:
445: assert(p->fonti);
446: p->fonti--;
1.17 kristaps 447: }
448:
449:
1.71 kristaps 450: /*
451: * Handle pwords, partial words, which may be either a single word or a
452: * phrase that cannot be broken down (such as a literal string). This
453: * handles word styling.
454: */
1.86 kristaps 455: void
456: term_word(struct termp *p, const char *word)
1.65 kristaps 457: {
1.124 kristaps 458: const char *sv, *seq;
1.125 kristaps 459: int sz;
1.124 kristaps 460: size_t ssz;
461: enum roffdeco deco;
1.71 kristaps 462:
1.100 kristaps 463: sv = word;
464:
1.123 kristaps 465: if (word[0] && '\0' == word[1])
1.100 kristaps 466: switch (word[0]) {
467: case('.'):
468: /* FALLTHROUGH */
469: case(','):
470: /* FALLTHROUGH */
471: case(';'):
472: /* FALLTHROUGH */
473: case(':'):
474: /* FALLTHROUGH */
475: case('?'):
476: /* FALLTHROUGH */
477: case('!'):
478: /* FALLTHROUGH */
479: case(')'):
480: /* FALLTHROUGH */
481: case(']'):
482: if ( ! (TERMP_IGNDELIM & p->flags))
483: p->flags |= TERMP_NOSPACE;
484: break;
485: default:
486: break;
487: }
1.65 kristaps 488:
1.133 kristaps 489: if ( ! (TERMP_NOSPACE & p->flags)) {
1.151 schwarze 490: if ( ! (TERMP_KEEP & p->flags)) {
491: if (TERMP_PREKEEP & p->flags)
492: p->flags |= TERMP_KEEP;
1.133 kristaps 493: bufferc(p, ' ');
1.151 schwarze 494: if (TERMP_SENTENCE & p->flags)
495: bufferc(p, ' ');
496: } else
497: bufferc(p, ASCII_NBRSP);
1.133 kristaps 498: }
1.65 kristaps 499:
1.71 kristaps 500: if ( ! (p->flags & TERMP_NONOSPACE))
501: p->flags &= ~TERMP_NOSPACE;
1.133 kristaps 502:
503: p->flags &= ~TERMP_SENTENCE;
1.65 kristaps 504:
1.125 kristaps 505: /* FIXME: use strcspn. */
1.124 kristaps 506:
507: while (*word) {
508: if ('\\' != *word) {
1.125 kristaps 509: encode(p, word, 1);
1.124 kristaps 510: word++;
511: continue;
512: }
513:
514: seq = ++word;
515: sz = a2roffdeco(&deco, &seq, &ssz);
516:
517: switch (deco) {
518: case (DECO_RESERVED):
1.125 kristaps 519: res(p, seq, ssz);
1.124 kristaps 520: break;
521: case (DECO_SPECIAL):
1.125 kristaps 522: spec(p, seq, ssz);
1.124 kristaps 523: break;
524: case (DECO_BOLD):
1.125 kristaps 525: term_fontrepl(p, TERMFONT_BOLD);
1.124 kristaps 526: break;
527: case (DECO_ITALIC):
1.125 kristaps 528: term_fontrepl(p, TERMFONT_UNDER);
1.124 kristaps 529: break;
530: case (DECO_ROMAN):
1.125 kristaps 531: term_fontrepl(p, TERMFONT_NONE);
1.124 kristaps 532: break;
533: case (DECO_PREVIOUS):
1.125 kristaps 534: term_fontlast(p);
1.124 kristaps 535: break;
536: default:
537: break;
538: }
1.127 kristaps 539:
1.124 kristaps 540: word += sz;
1.127 kristaps 541: if (DECO_NOSPACE == deco && '\0' == *word)
542: p->flags |= TERMP_NOSPACE;
1.124 kristaps 543: }
1.65 kristaps 544:
1.131 kristaps 545: /*
546: * Note that we don't process the pipe: the parser sees it as
547: * punctuation, but we don't in terms of typography.
548: */
1.100 kristaps 549: if (sv[0] && 0 == sv[1])
550: switch (sv[0]) {
551: case('('):
552: /* FALLTHROUGH */
553: case('['):
554: p->flags |= TERMP_NOSPACE;
555: break;
556: default:
557: break;
558: }
1.65 kristaps 559: }
560:
561:
1.71 kristaps 562: static void
1.125 kristaps 563: adjbuf(struct termp *p, size_t sz)
1.51 kristaps 564: {
565:
1.125 kristaps 566: if (0 == p->maxcols)
567: p->maxcols = 1024;
568: while (sz >= p->maxcols)
569: p->maxcols <<= 2;
570:
571: p->buf = realloc(p->buf, p->maxcols);
572: if (NULL == p->buf) {
573: perror(NULL);
574: exit(EXIT_FAILURE);
1.71 kristaps 575: }
1.51 kristaps 576: }
577:
1.79 kristaps 578:
579: static void
1.125 kristaps 580: buffera(struct termp *p, const char *word, size_t sz)
1.79 kristaps 581: {
1.125 kristaps 582:
583: if (p->col + sz >= p->maxcols)
584: adjbuf(p, p->col + sz);
585:
1.126 kristaps 586: memcpy(&p->buf[(int)p->col], word, sz);
1.125 kristaps 587: p->col += sz;
588: }
589:
590:
591: static void
592: bufferc(struct termp *p, char c)
593: {
594:
595: if (p->col + 1 >= p->maxcols)
596: adjbuf(p, p->col + 1);
597:
1.126 kristaps 598: p->buf[(int)p->col++] = c;
1.125 kristaps 599: }
600:
601:
602: static void
603: encode(struct termp *p, const char *word, size_t sz)
604: {
605: enum termfont f;
606: int i;
607:
608: /*
609: * Encode and buffer a string of characters. If the current
610: * font mode is unset, buffer directly, else encode then buffer
611: * character by character.
612: */
613:
1.147 kristaps 614: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.125 kristaps 615: buffera(p, word, sz);
616: return;
617: }
618:
619: for (i = 0; i < (int)sz; i++) {
620: if ( ! isgraph((u_char)word[i])) {
621: bufferc(p, word[i]);
622: continue;
1.79 kristaps 623: }
1.125 kristaps 624:
625: if (TERMFONT_UNDER == f)
626: bufferc(p, '_');
627: else
628: bufferc(p, word[i]);
629:
630: bufferc(p, 8);
631: bufferc(p, word[i]);
1.79 kristaps 632: }
633: }
1.106 kristaps 634:
635:
1.107 kristaps 636: size_t
1.149 kristaps 637: term_len(const struct termp *p, size_t sz)
638: {
639:
640: return((*p->width)(p, ' ') * sz);
641: }
642:
643:
644: size_t
645: term_strlen(const struct termp *p, const char *cp)
646: {
647: size_t sz;
648:
649: for (sz = 0; *cp; cp++)
650: sz += (*p->width)(p, *cp);
651:
652: return(sz);
653: }
654:
655:
1.157 ! kristaps 656: /* ARGSUSED */
1.149 kristaps 657: size_t
658: term_vspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 659: {
660: double r;
661:
1.107 kristaps 662: switch (su->unit) {
1.106 kristaps 663: case (SCALE_CM):
1.107 kristaps 664: r = su->scale * 2;
1.106 kristaps 665: break;
666: case (SCALE_IN):
1.107 kristaps 667: r = su->scale * 6;
1.106 kristaps 668: break;
669: case (SCALE_PC):
1.107 kristaps 670: r = su->scale;
1.106 kristaps 671: break;
672: case (SCALE_PT):
1.107 kristaps 673: r = su->scale / 8;
1.106 kristaps 674: break;
675: case (SCALE_MM):
1.107 kristaps 676: r = su->scale / 1000;
1.106 kristaps 677: break;
678: case (SCALE_VS):
1.107 kristaps 679: r = su->scale;
1.106 kristaps 680: break;
681: default:
1.107 kristaps 682: r = su->scale - 1;
1.106 kristaps 683: break;
684: }
685:
686: if (r < 0.0)
687: r = 0.0;
1.107 kristaps 688: return(/* LINTED */(size_t)
1.106 kristaps 689: r);
690: }
691:
692:
1.107 kristaps 693: size_t
1.149 kristaps 694: term_hspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 695: {
1.156 kristaps 696: double v;
1.108 kristaps 697:
1.156 kristaps 698: v = ((*p->hspan)(p, su));
699: if (v < 0.0)
700: v = 0.0;
701: return((size_t) /* LINTED */
702: v);
1.106 kristaps 703: }
CVSweb