Annotation of mandoc/term.c, Revision 1.193
1.193 ! kristaps 1: /* $Id: term.c,v 1.192 2011/05/17 11:55:08 kristaps Exp $ */
1.1 kristaps 2: /*
1.159 schwarze 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.177 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
1.74 kristaps 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: *
1.74 kristaps 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: */
1.128 kristaps 18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
20: #endif
21:
1.126 kristaps 22: #include <sys/types.h>
23:
1.1 kristaps 24: #include <assert.h>
1.122 kristaps 25: #include <ctype.h>
1.141 kristaps 26: #include <stdint.h>
1.22 kristaps 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
29: #include <string.h>
30:
1.137 kristaps 31: #include "mandoc.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:
1.191 kristaps 36: static void adjbuf(struct termp *p, int);
37: static void bufferc(struct termp *, char);
38: static void encode(struct termp *, const char *, size_t);
1.11 kristaps 39:
1.145 kristaps 40: void
1.71 kristaps 41: term_free(struct termp *p)
1.14 kristaps 42: {
43:
1.71 kristaps 44: if (p->buf)
45: free(p->buf);
1.102 kristaps 46: if (p->symtab)
1.185 kristaps 47: mchars_free(p->symtab);
1.145 kristaps 48:
1.142 kristaps 49: free(p);
50: }
51:
52:
53: void
54: term_begin(struct termp *p, term_margin head,
55: term_margin foot, const void *arg)
56: {
57:
58: p->headf = head;
59: p->footf = foot;
60: p->argf = arg;
1.146 kristaps 61: (*p->begin)(p);
1.142 kristaps 62: }
63:
64:
65: void
66: term_end(struct termp *p)
67: {
68:
1.146 kristaps 69: (*p->end)(p);
1.14 kristaps 70: }
71:
1.71 kristaps 72: /*
73: * Flush a line of text. A "line" is loosely defined as being something
74: * that should be followed by a newline, regardless of whether it's
75: * broken apart by newlines getting there. A line can also be a
1.130 kristaps 76: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
77: * not have a trailing newline.
1.71 kristaps 78: *
1.130 kristaps 79: * The following flags may be specified:
1.71 kristaps 80: *
81: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
82: * offset value. This is useful when doing columnar lists where the
83: * prior column has right-padded.
84: *
85: * - TERMP_NOBREAK: this is the most important and is used when making
86: * columns. In short: don't print a newline and instead pad to the
87: * right margin. Used in conjunction with TERMP_NOLPAD.
88: *
1.91 kristaps 89: * - TERMP_TWOSPACE: when padding, make sure there are at least two
90: * space characters of padding. Otherwise, rather break the line.
91: *
1.84 kristaps 92: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
93: * the line is overrun, and don't pad-right if it's underrun.
94: *
95: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
96: * overruning, instead save the position and continue at that point
97: * when the next invocation.
1.71 kristaps 98: *
99: * In-line line breaking:
100: *
101: * If TERMP_NOBREAK is specified and the line overruns the right
102: * margin, it will break and pad-right to the right margin after
103: * writing. If maxrmargin is violated, it will break and continue
1.114 kristaps 104: * writing from the right-margin, which will lead to the above scenario
105: * upon exit. Otherwise, the line will break at the right margin.
1.71 kristaps 106: */
107: void
108: term_flushln(struct termp *p)
1.53 kristaps 109: {
1.114 kristaps 110: int i; /* current input position in p->buf */
111: size_t vis; /* current visual position on output */
112: size_t vbl; /* number of blanks to prepend to output */
1.136 schwarze 113: size_t vend; /* end of word visual position on output */
1.114 kristaps 114: size_t bp; /* visual right border position */
1.172 schwarze 115: size_t dv; /* temporary for visual pos calculations */
1.152 kristaps 116: int j; /* temporary loop index for p->buf */
117: int jhy; /* last hyph before overflow w/r/t j */
118: size_t maxvis; /* output position of visible boundary */
119: size_t mmax; /* used in calculating bp */
1.53 kristaps 120:
1.71 kristaps 121: /*
122: * First, establish the maximum columns of "visible" content.
123: * This is usually the difference between the right-margin and
124: * an indentation, but can be, for tagged lists or columns, a
1.115 kristaps 125: * small set of values.
1.71 kristaps 126: */
1.175 kristaps 127: assert (p->rmargin >= p->offset);
1.174 schwarze 128: dv = p->rmargin - p->offset;
129: maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
130: dv = p->maxrmargin - p->offset;
131: mmax = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
1.92 kristaps 132:
1.71 kristaps 133: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.115 kristaps 134:
1.136 schwarze 135: /*
136: * Indent the first line of a paragraph.
137: */
1.174 schwarze 138: vbl = p->flags & TERMP_NOLPAD ? (size_t)0 : p->offset;
1.136 schwarze 139:
1.174 schwarze 140: vis = vend = 0;
141: i = 0;
1.115 kristaps 142:
1.188 kristaps 143: while (i < p->col) {
1.71 kristaps 144: /*
1.154 kristaps 145: * Handle literal tab characters: collapse all
146: * subsequent tabs into a single huge set of spaces.
1.138 schwarze 147: */
1.188 kristaps 148: while (i < p->col && '\t' == p->buf[i]) {
1.154 kristaps 149: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.138 schwarze 150: vbl += vend - vis;
151: vis = vend;
1.169 schwarze 152: i++;
1.138 schwarze 153: }
154:
155: /*
1.71 kristaps 156: * Count up visible word characters. Control sequences
157: * (starting with the CSI) aren't counted. A space
158: * generates a non-printing word, which is valid (the
159: * space is printed according to regular spacing rules).
160: */
161:
1.188 kristaps 162: for (j = i, jhy = 0; j < p->col; j++) {
1.138 schwarze 163: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.71 kristaps 164: break;
1.154 kristaps 165:
166: /* Back over the the last printed character. */
167: if (8 == p->buf[j]) {
1.153 kristaps 168: assert(j);
169: vend -= (*p->width)(p, p->buf[j - 1]);
1.154 kristaps 170: continue;
1.153 kristaps 171: }
1.154 kristaps 172:
173: /* Regular word. */
174: /* Break at the hyphen point if we overrun. */
175: if (vend > vis && vend < bp &&
176: ASCII_HYPH == p->buf[j])
177: jhy = j;
178:
179: vend += (*p->width)(p, p->buf[j]);
1.71 kristaps 180: }
1.53 kristaps 181:
1.71 kristaps 182: /*
1.81 kristaps 183: * Find out whether we would exceed the right margin.
1.136 schwarze 184: * If so, break to the next line.
1.81 kristaps 185: */
1.140 kristaps 186: if (vend > bp && 0 == jhy && vis > 0) {
1.136 schwarze 187: vend -= vis;
1.146 kristaps 188: (*p->endline)(p);
1.81 kristaps 189: if (TERMP_NOBREAK & p->flags) {
1.139 schwarze 190: p->viscol = p->rmargin;
1.146 kristaps 191: (*p->advance)(p, p->rmargin);
1.136 schwarze 192: vend += p->rmargin - p->offset;
1.81 kristaps 193: } else {
1.139 schwarze 194: p->viscol = 0;
1.136 schwarze 195: vbl = p->offset;
1.81 kristaps 196: }
1.130 kristaps 197:
1.129 kristaps 198: /* Remove the p->overstep width. */
1.130 kristaps 199:
1.174 schwarze 200: bp += (size_t)p->overstep;
1.129 kristaps 201: p->overstep = 0;
1.71 kristaps 202: }
1.138 schwarze 203:
1.130 kristaps 204: /* Write out the [remaining] word. */
1.188 kristaps 205: for ( ; i < p->col; i++) {
1.140 kristaps 206: if (vend > bp && jhy > 0 && i > jhy)
207: break;
1.138 schwarze 208: if ('\t' == p->buf[i])
209: break;
1.136 schwarze 210: if (' ' == p->buf[i]) {
1.164 kristaps 211: j = i;
212: while (' ' == p->buf[i])
1.136 schwarze 213: i++;
1.174 schwarze 214: dv = (size_t)(i - j) * (*p->width)(p, ' ');
1.172 schwarze 215: vbl += dv;
216: vend += dv;
1.71 kristaps 217: break;
1.136 schwarze 218: }
219: if (ASCII_NBRSP == p->buf[i]) {
1.153 kristaps 220: vbl += (*p->width)(p, ' ');
1.136 schwarze 221: continue;
222: }
1.130 kristaps 223:
1.136 schwarze 224: /*
225: * Now we definitely know there will be
226: * printable characters to output,
227: * so write preceding white space now.
228: */
229: if (vbl) {
1.146 kristaps 230: (*p->advance)(p, vbl);
1.139 schwarze 231: p->viscol += vbl;
1.136 schwarze 232: vbl = 0;
233: }
1.140 kristaps 234:
1.153 kristaps 235: if (ASCII_HYPH == p->buf[i]) {
1.146 kristaps 236: (*p->letter)(p, '-');
1.153 kristaps 237: p->viscol += (*p->width)(p, '-');
238: } else {
1.146 kristaps 239: (*p->letter)(p, p->buf[i]);
1.153 kristaps 240: p->viscol += (*p->width)(p, p->buf[i]);
241: }
1.136 schwarze 242: }
243: vis = vend;
1.71 kristaps 244: }
1.168 schwarze 245:
246: /*
247: * If there was trailing white space, it was not printed;
248: * so reset the cursor position accordingly.
249: */
250: vis -= vbl;
1.111 kristaps 251:
1.91 kristaps 252: p->col = 0;
1.129 kristaps 253: p->overstep = 0;
1.15 kristaps 254:
1.91 kristaps 255: if ( ! (TERMP_NOBREAK & p->flags)) {
1.139 schwarze 256: p->viscol = 0;
1.146 kristaps 257: (*p->endline)(p);
1.15 kristaps 258: return;
1.71 kristaps 259: }
1.15 kristaps 260:
1.91 kristaps 261: if (TERMP_HANG & p->flags) {
262: /* We need one blank after the tag. */
1.174 schwarze 263: p->overstep = (int)(vis - maxvis + (*p->width)(p, ' '));
1.91 kristaps 264:
265: /*
266: * Behave exactly the same way as groff:
1.92 kristaps 267: * If we have overstepped the margin, temporarily move
268: * it to the right and flag the rest of the line to be
269: * shorter.
1.91 kristaps 270: * If we landed right at the margin, be happy.
1.92 kristaps 271: * If we are one step before the margin, temporarily
272: * move it one step LEFT and flag the rest of the line
273: * to be longer.
1.91 kristaps 274: */
1.129 kristaps 275: if (p->overstep >= -1) {
276: assert((int)maxvis + p->overstep >= 0);
1.174 schwarze 277: maxvis += (size_t)p->overstep;
1.92 kristaps 278: } else
1.129 kristaps 279: p->overstep = 0;
1.91 kristaps 280:
281: } else if (TERMP_DANGLE & p->flags)
282: return;
1.15 kristaps 283:
1.92 kristaps 284: /* Right-pad. */
1.174 schwarze 285: if (maxvis > vis +
286: ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
1.139 schwarze 287: p->viscol += maxvis - vis;
1.146 kristaps 288: (*p->advance)(p, maxvis - vis);
1.142 kristaps 289: vis += (maxvis - vis);
1.139 schwarze 290: } else { /* ...or newline break. */
1.146 kristaps 291: (*p->endline)(p);
1.139 schwarze 292: p->viscol = p->rmargin;
1.146 kristaps 293: (*p->advance)(p, p->rmargin);
1.91 kristaps 294: }
1.15 kristaps 295: }
296:
297:
1.71 kristaps 298: /*
299: * A newline only breaks an existing line; it won't assert vertical
300: * space. All data in the output buffer is flushed prior to the newline
301: * assertion.
302: */
303: void
304: term_newln(struct termp *p)
1.15 kristaps 305: {
306:
1.71 kristaps 307: p->flags |= TERMP_NOSPACE;
1.139 schwarze 308: if (0 == p->col && 0 == p->viscol) {
1.71 kristaps 309: p->flags &= ~TERMP_NOLPAD;
1.15 kristaps 310: return;
1.16 kristaps 311: }
1.71 kristaps 312: term_flushln(p);
313: p->flags &= ~TERMP_NOLPAD;
1.16 kristaps 314: }
315:
316:
1.71 kristaps 317: /*
318: * Asserts a vertical space (a full, empty line-break between lines).
319: * Note that if used twice, this will cause two blank spaces and so on.
320: * All data in the output buffer is flushed prior to the newline
321: * assertion.
322: */
323: void
324: term_vspace(struct termp *p)
1.16 kristaps 325: {
326:
1.62 kristaps 327: term_newln(p);
1.139 schwarze 328: p->viscol = 0;
1.146 kristaps 329: (*p->endline)(p);
1.16 kristaps 330: }
331:
1.125 kristaps 332: void
333: term_fontlast(struct termp *p)
334: {
335: enum termfont f;
336:
337: f = p->fontl;
338: p->fontl = p->fontq[p->fonti];
339: p->fontq[p->fonti] = f;
340: }
341:
342:
343: void
344: term_fontrepl(struct termp *p, enum termfont f)
345: {
346:
347: p->fontl = p->fontq[p->fonti];
348: p->fontq[p->fonti] = f;
349: }
350:
351:
352: void
353: term_fontpush(struct termp *p, enum termfont f)
354: {
355:
356: assert(p->fonti + 1 < 10);
357: p->fontl = p->fontq[p->fonti];
358: p->fontq[++p->fonti] = f;
359: }
360:
361:
362: const void *
363: term_fontq(struct termp *p)
364: {
365:
366: return(&p->fontq[p->fonti]);
367: }
368:
369:
370: enum termfont
371: term_fonttop(struct termp *p)
372: {
373:
374: return(p->fontq[p->fonti]);
375: }
376:
377:
378: void
379: term_fontpopq(struct termp *p, const void *key)
380: {
381:
382: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
383: p->fonti--;
384: assert(p->fonti >= 0);
385: }
1.94 kristaps 386:
1.125 kristaps 387:
388: void
389: term_fontpop(struct termp *p)
390: {
391:
392: assert(p->fonti);
393: p->fonti--;
1.17 kristaps 394: }
395:
1.71 kristaps 396: /*
397: * Handle pwords, partial words, which may be either a single word or a
398: * phrase that cannot be broken down (such as a literal string). This
399: * handles word styling.
400: */
1.86 kristaps 401: void
402: term_word(struct termp *p, const char *word)
1.65 kristaps 403: {
1.191 kristaps 404: const char *seq, *cp;
405: char c;
1.184 kristaps 406: int sz;
1.124 kristaps 407: size_t ssz;
1.184 kristaps 408: enum mandoc_esc esc;
1.100 kristaps 409:
1.133 kristaps 410: if ( ! (TERMP_NOSPACE & p->flags)) {
1.151 schwarze 411: if ( ! (TERMP_KEEP & p->flags)) {
412: if (TERMP_PREKEEP & p->flags)
413: p->flags |= TERMP_KEEP;
1.133 kristaps 414: bufferc(p, ' ');
1.151 schwarze 415: if (TERMP_SENTENCE & p->flags)
416: bufferc(p, ' ');
417: } else
418: bufferc(p, ASCII_NBRSP);
1.133 kristaps 419: }
1.65 kristaps 420:
1.71 kristaps 421: if ( ! (p->flags & TERMP_NONOSPACE))
422: p->flags &= ~TERMP_NOSPACE;
1.166 kristaps 423: else
424: p->flags |= TERMP_NOSPACE;
1.133 kristaps 425:
1.173 schwarze 426: p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
1.65 kristaps 427:
1.184 kristaps 428: while ('\0' != *word) {
1.162 kristaps 429: if ((ssz = strcspn(word, "\\")) > 0)
430: encode(p, word, ssz);
1.124 kristaps 431:
1.178 kristaps 432: word += (int)ssz;
1.162 kristaps 433: if ('\\' != *word)
1.124 kristaps 434: continue;
435:
1.184 kristaps 436: word++;
437: esc = mandoc_escape(&word, &seq, &sz);
438: if (ESCAPE_ERROR == esc)
439: break;
1.124 kristaps 440:
1.184 kristaps 441: switch (esc) {
1.192 kristaps 442: case (ESCAPE_UNICODE):
443: encode(p, "?", 1);
444: break;
1.184 kristaps 445: case (ESCAPE_NUMBERED):
1.191 kristaps 446: if ('\0' != (c = mchars_num2char(seq, sz)))
447: encode(p, &c, 1);
1.184 kristaps 448: break;
449: case (ESCAPE_PREDEF):
1.191 kristaps 450: cp = mchars_res2str(p->symtab, seq, sz, &ssz);
451: if (NULL != cp)
452: encode(p, cp, ssz);
1.184 kristaps 453: break;
454: case (ESCAPE_SPECIAL):
1.191 kristaps 455: cp = mchars_spec2str(p->symtab, seq, sz, &ssz);
456: if (NULL != cp)
457: encode(p, cp, ssz);
458: else if (1 == ssz)
459: encode(p, seq, sz);
1.124 kristaps 460: break;
1.184 kristaps 461: case (ESCAPE_FONTBOLD):
1.125 kristaps 462: term_fontrepl(p, TERMFONT_BOLD);
1.124 kristaps 463: break;
1.184 kristaps 464: case (ESCAPE_FONTITALIC):
1.125 kristaps 465: term_fontrepl(p, TERMFONT_UNDER);
1.124 kristaps 466: break;
1.184 kristaps 467: case (ESCAPE_FONTROMAN):
1.125 kristaps 468: term_fontrepl(p, TERMFONT_NONE);
1.124 kristaps 469: break;
1.184 kristaps 470: case (ESCAPE_FONTPREV):
1.125 kristaps 471: term_fontlast(p);
1.124 kristaps 472: break;
1.184 kristaps 473: case (ESCAPE_NOSPACE):
474: if ('\0' == *word)
475: p->flags |= TERMP_NOSPACE;
476: break;
1.124 kristaps 477: default:
478: break;
479: }
480: }
1.65 kristaps 481: }
482:
1.71 kristaps 483: static void
1.188 kristaps 484: adjbuf(struct termp *p, int sz)
1.51 kristaps 485: {
486:
1.125 kristaps 487: if (0 == p->maxcols)
488: p->maxcols = 1024;
489: while (sz >= p->maxcols)
490: p->maxcols <<= 2;
491:
1.188 kristaps 492: p->buf = mandoc_realloc
493: (p->buf, sizeof(int) * (size_t)p->maxcols);
1.51 kristaps 494: }
495:
1.79 kristaps 496: static void
1.125 kristaps 497: bufferc(struct termp *p, char c)
498: {
499:
500: if (p->col + 1 >= p->maxcols)
501: adjbuf(p, p->col + 1);
502:
1.188 kristaps 503: p->buf[p->col++] = c;
1.125 kristaps 504: }
505:
506: static void
507: encode(struct termp *p, const char *word, size_t sz)
508: {
509: enum termfont f;
1.188 kristaps 510: int i, len;
511:
512: /* LINTED */
513: len = sz;
1.125 kristaps 514:
515: /*
516: * Encode and buffer a string of characters. If the current
517: * font mode is unset, buffer directly, else encode then buffer
518: * character by character.
519: */
520:
1.147 kristaps 521: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.188 kristaps 522: if (p->col + len >= p->maxcols)
523: adjbuf(p, p->col + len);
524: for (i = 0; i < len; i++)
525: p->buf[p->col++] = word[i];
1.125 kristaps 526: return;
527: }
528:
1.165 kristaps 529: /* Pre-buffer, assuming worst-case. */
530:
1.188 kristaps 531: if (p->col + 1 + (len * 3) >= p->maxcols)
532: adjbuf(p, p->col + 1 + (len * 3));
1.165 kristaps 533:
1.188 kristaps 534: for (i = 0; i < len; i++) {
535: if ( ! isgraph((unsigned char)word[i])) {
536: p->buf[p->col++] = word[i];
1.125 kristaps 537: continue;
1.79 kristaps 538: }
1.125 kristaps 539:
540: if (TERMFONT_UNDER == f)
1.188 kristaps 541: p->buf[p->col++] = '_';
1.125 kristaps 542: else
1.188 kristaps 543: p->buf[p->col++] = word[i];
1.125 kristaps 544:
1.188 kristaps 545: p->buf[p->col++] = 8;
546: p->buf[p->col++] = word[i];
1.79 kristaps 547: }
548: }
1.106 kristaps 549:
1.107 kristaps 550: size_t
1.149 kristaps 551: term_len(const struct termp *p, size_t sz)
552: {
553:
554: return((*p->width)(p, ' ') * sz);
555: }
556:
557:
558: size_t
559: term_strlen(const struct termp *p, const char *cp)
560: {
1.184 kristaps 561: size_t sz, rsz, i;
1.190 kristaps 562: int ssz, c;
1.171 kristaps 563: const char *seq, *rhs;
1.189 kristaps 564: static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' };
1.171 kristaps 565:
1.184 kristaps 566: /*
567: * Account for escaped sequences within string length
568: * calculations. This follows the logic in term_word() as we
569: * must calculate the width of produced strings.
570: */
571:
572: sz = 0;
1.189 kristaps 573: while ('\0' != *cp) {
574: rsz = strcspn(cp, rej);
575: for (i = 0; i < rsz; i++)
576: sz += (*p->width)(p, *cp++);
577:
1.192 kristaps 578: c = 0;
1.184 kristaps 579: switch (*cp) {
580: case ('\\'):
1.189 kristaps 581: cp++;
1.190 kristaps 582: rhs = NULL;
1.189 kristaps 583: switch (mandoc_escape(&cp, &seq, &ssz)) {
584: case (ESCAPE_ERROR):
1.184 kristaps 585: return(sz);
1.192 kristaps 586: case (ESCAPE_UNICODE):
587: c = '?';
588: /* FALLTHROUGH */
1.190 kristaps 589: case (ESCAPE_NUMBERED):
1.192 kristaps 590: if ('\0' != c)
591: c = mchars_num2char(seq, ssz);
1.190 kristaps 592: if ('\0' != c)
593: sz += (*p->width)(p, c);
594: break;
1.184 kristaps 595: case (ESCAPE_PREDEF):
1.185 kristaps 596: rhs = mchars_res2str
1.171 kristaps 597: (p->symtab, seq, ssz, &rsz);
598: break;
1.184 kristaps 599: case (ESCAPE_SPECIAL):
1.185 kristaps 600: rhs = mchars_spec2str
1.171 kristaps 601: (p->symtab, seq, ssz, &rsz);
602:
1.184 kristaps 603: if (ssz != 1 || rhs)
1.171 kristaps 604: break;
605:
606: rhs = seq;
607: rsz = ssz;
608: break;
609: default:
610: break;
611: }
1.149 kristaps 612:
1.184 kristaps 613: if (NULL == rhs)
614: break;
615:
616: for (i = 0; i < rsz; i++)
617: sz += (*p->width)(p, *rhs++);
618: break;
619: case (ASCII_NBRSP):
1.176 kristaps 620: sz += (*p->width)(p, ' ');
621: cp++;
1.184 kristaps 622: break;
623: case (ASCII_HYPH):
1.176 kristaps 624: sz += (*p->width)(p, '-');
625: cp++;
1.184 kristaps 626: break;
627: default:
628: break;
629: }
1.189 kristaps 630: }
1.149 kristaps 631:
632: return(sz);
633: }
634:
1.157 kristaps 635: /* ARGSUSED */
1.149 kristaps 636: size_t
637: term_vspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 638: {
639: double r;
640:
1.107 kristaps 641: switch (su->unit) {
1.106 kristaps 642: case (SCALE_CM):
1.107 kristaps 643: r = su->scale * 2;
1.106 kristaps 644: break;
645: case (SCALE_IN):
1.107 kristaps 646: r = su->scale * 6;
1.106 kristaps 647: break;
648: case (SCALE_PC):
1.107 kristaps 649: r = su->scale;
1.106 kristaps 650: break;
651: case (SCALE_PT):
1.107 kristaps 652: r = su->scale / 8;
1.106 kristaps 653: break;
654: case (SCALE_MM):
1.107 kristaps 655: r = su->scale / 1000;
1.106 kristaps 656: break;
657: case (SCALE_VS):
1.107 kristaps 658: r = su->scale;
1.106 kristaps 659: break;
660: default:
1.107 kristaps 661: r = su->scale - 1;
1.106 kristaps 662: break;
663: }
664:
665: if (r < 0.0)
666: r = 0.0;
1.107 kristaps 667: return(/* LINTED */(size_t)
1.106 kristaps 668: r);
669: }
670:
1.107 kristaps 671: size_t
1.149 kristaps 672: term_hspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 673: {
1.156 kristaps 674: double v;
1.108 kristaps 675:
1.156 kristaps 676: v = ((*p->hspan)(p, su));
677: if (v < 0.0)
678: v = 0.0;
679: return((size_t) /* LINTED */
680: v);
1.106 kristaps 681: }
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