Annotation of mandoc/term.c, Revision 1.167
1.167 ! schwarze 1: /* $Id: term.c,v 1.166 2010/07/26 22:26:05 kristaps Exp $ */
1.1 kristaps 2: /*
1.159 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
1.74 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"
1.101 kristaps 32: #include "chars.h"
1.107 kristaps 33: #include "out.h"
1.71 kristaps 34: #include "term.h"
1.105 kristaps 35: #include "main.h"
1.1 kristaps 36:
1.163 kristaps 37: static void spec(struct termp *, enum roffdeco,
38: const char *, size_t);
1.125 kristaps 39: static void res(struct termp *, const char *, size_t);
40: static void bufferc(struct termp *, char);
41: static void adjbuf(struct termp *p, size_t);
42: static void encode(struct termp *, const char *, size_t);
1.11 kristaps 43:
44:
1.145 kristaps 45: void
1.71 kristaps 46: term_free(struct termp *p)
1.14 kristaps 47: {
48:
1.71 kristaps 49: if (p->buf)
50: free(p->buf);
1.102 kristaps 51: if (p->symtab)
1.101 kristaps 52: chars_free(p->symtab);
1.145 kristaps 53:
1.142 kristaps 54: free(p);
55: }
56:
57:
58: void
59: term_begin(struct termp *p, term_margin head,
60: term_margin foot, const void *arg)
61: {
62:
63: p->headf = head;
64: p->footf = foot;
65: p->argf = arg;
1.146 kristaps 66: (*p->begin)(p);
1.142 kristaps 67: }
68:
69:
70: void
71: term_end(struct termp *p)
72: {
73:
1.146 kristaps 74: (*p->end)(p);
1.14 kristaps 75: }
76:
77:
1.145 kristaps 78: struct termp *
79: term_alloc(enum termenc enc)
1.14 kristaps 80: {
1.141 kristaps 81: struct termp *p;
1.14 kristaps 82:
1.117 kristaps 83: p = calloc(1, sizeof(struct termp));
84: if (NULL == p) {
1.120 kristaps 85: perror(NULL);
1.167 ! schwarze 86: exit(MANDOCLEVEL_SYSERR);
1.117 kristaps 87: }
1.141 kristaps 88:
1.71 kristaps 89: p->enc = enc;
90: return(p);
1.14 kristaps 91: }
92:
93:
1.71 kristaps 94: /*
95: * Flush a line of text. A "line" is loosely defined as being something
96: * that should be followed by a newline, regardless of whether it's
97: * broken apart by newlines getting there. A line can also be a
1.130 kristaps 98: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
99: * not have a trailing newline.
1.71 kristaps 100: *
1.130 kristaps 101: * The following flags may be specified:
1.71 kristaps 102: *
103: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
104: * offset value. This is useful when doing columnar lists where the
105: * prior column has right-padded.
106: *
107: * - TERMP_NOBREAK: this is the most important and is used when making
108: * columns. In short: don't print a newline and instead pad to the
109: * right margin. Used in conjunction with TERMP_NOLPAD.
110: *
1.91 kristaps 111: * - TERMP_TWOSPACE: when padding, make sure there are at least two
112: * space characters of padding. Otherwise, rather break the line.
113: *
1.84 kristaps 114: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
115: * the line is overrun, and don't pad-right if it's underrun.
116: *
117: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
118: * overruning, instead save the position and continue at that point
119: * when the next invocation.
1.71 kristaps 120: *
121: * In-line line breaking:
122: *
123: * If TERMP_NOBREAK is specified and the line overruns the right
124: * margin, it will break and pad-right to the right margin after
125: * writing. If maxrmargin is violated, it will break and continue
1.114 kristaps 126: * writing from the right-margin, which will lead to the above scenario
127: * upon exit. Otherwise, the line will break at the right margin.
1.71 kristaps 128: */
129: void
130: term_flushln(struct termp *p)
1.53 kristaps 131: {
1.114 kristaps 132: int i; /* current input position in p->buf */
133: size_t vis; /* current visual position on output */
134: size_t vbl; /* number of blanks to prepend to output */
1.136 schwarze 135: size_t vend; /* end of word visual position on output */
1.114 kristaps 136: size_t bp; /* visual right border position */
1.152 kristaps 137: int j; /* temporary loop index for p->buf */
138: int jhy; /* last hyph before overflow w/r/t j */
139: size_t maxvis; /* output position of visible boundary */
140: size_t mmax; /* used in calculating bp */
1.53 kristaps 141:
1.71 kristaps 142: /*
143: * First, establish the maximum columns of "visible" content.
144: * This is usually the difference between the right-margin and
145: * an indentation, but can be, for tagged lists or columns, a
1.115 kristaps 146: * small set of values.
1.71 kristaps 147: */
1.53 kristaps 148:
1.71 kristaps 149: assert(p->offset < p->rmargin);
1.92 kristaps 150:
1.129 kristaps 151: maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 152: /* LINTED */
1.129 kristaps 153: 0 : p->rmargin - p->offset - p->overstep;
154: mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 155: /* LINTED */
1.129 kristaps 156: 0 : p->maxrmargin - p->offset - p->overstep;
1.92 kristaps 157:
1.71 kristaps 158: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.115 kristaps 159:
1.136 schwarze 160: /*
161: * Indent the first line of a paragraph.
162: */
163: vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
164:
1.154 kristaps 165: vis = vend = i = 0;
1.115 kristaps 166:
1.136 schwarze 167: while (i < (int)p->col) {
1.71 kristaps 168: /*
1.154 kristaps 169: * Handle literal tab characters: collapse all
170: * subsequent tabs into a single huge set of spaces.
1.138 schwarze 171: */
172: for (j = i; j < (int)p->col; j++) {
173: if ('\t' != p->buf[j])
174: break;
1.154 kristaps 175: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.138 schwarze 176: vbl += vend - vis;
177: vis = vend;
178: }
179:
180: /*
1.71 kristaps 181: * Count up visible word characters. Control sequences
182: * (starting with the CSI) aren't counted. A space
183: * generates a non-printing word, which is valid (the
184: * space is printed according to regular spacing rules).
185: */
186:
187: /* LINTED */
1.140 kristaps 188: for (jhy = 0; j < (int)p->col; j++) {
1.138 schwarze 189: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.71 kristaps 190: break;
1.154 kristaps 191:
192: /* Back over the the last printed character. */
193: if (8 == p->buf[j]) {
1.153 kristaps 194: assert(j);
195: vend -= (*p->width)(p, p->buf[j - 1]);
1.154 kristaps 196: continue;
1.153 kristaps 197: }
1.154 kristaps 198:
199: /* Regular word. */
200: /* Break at the hyphen point if we overrun. */
201: if (vend > vis && vend < bp &&
202: ASCII_HYPH == p->buf[j])
203: jhy = j;
204:
205: vend += (*p->width)(p, p->buf[j]);
1.71 kristaps 206: }
1.53 kristaps 207:
1.71 kristaps 208: /*
1.81 kristaps 209: * Find out whether we would exceed the right margin.
1.136 schwarze 210: * If so, break to the next line.
1.81 kristaps 211: */
1.140 kristaps 212: if (vend > bp && 0 == jhy && vis > 0) {
1.136 schwarze 213: vend -= vis;
1.146 kristaps 214: (*p->endline)(p);
1.81 kristaps 215: if (TERMP_NOBREAK & p->flags) {
1.139 schwarze 216: p->viscol = p->rmargin;
1.146 kristaps 217: (*p->advance)(p, p->rmargin);
1.136 schwarze 218: vend += p->rmargin - p->offset;
1.81 kristaps 219: } else {
1.139 schwarze 220: p->viscol = 0;
1.136 schwarze 221: vbl = p->offset;
1.81 kristaps 222: }
1.130 kristaps 223:
1.129 kristaps 224: /* Remove the p->overstep width. */
1.130 kristaps 225:
1.112 kristaps 226: bp += (int)/* LINTED */
1.129 kristaps 227: p->overstep;
228: p->overstep = 0;
1.71 kristaps 229: }
1.53 kristaps 230:
1.138 schwarze 231: /*
232: * Skip leading tabs, they were handled above.
233: */
234: while (i < (int)p->col && '\t' == p->buf[i])
235: i++;
236:
1.130 kristaps 237: /* Write out the [remaining] word. */
1.136 schwarze 238: for ( ; i < (int)p->col; i++) {
1.140 kristaps 239: if (vend > bp && jhy > 0 && i > jhy)
240: break;
1.138 schwarze 241: if ('\t' == p->buf[i])
242: break;
1.136 schwarze 243: if (' ' == p->buf[i]) {
1.164 kristaps 244: j = i;
245: while (' ' == p->buf[i])
1.136 schwarze 246: i++;
1.164 kristaps 247: vbl += (i - j) * (*p->width)(p, ' ');
1.71 kristaps 248: break;
1.136 schwarze 249: }
250: if (ASCII_NBRSP == p->buf[i]) {
1.153 kristaps 251: vbl += (*p->width)(p, ' ');
1.136 schwarze 252: continue;
253: }
1.130 kristaps 254:
1.136 schwarze 255: /*
256: * Now we definitely know there will be
257: * printable characters to output,
258: * so write preceding white space now.
259: */
260: if (vbl) {
1.146 kristaps 261: (*p->advance)(p, vbl);
1.139 schwarze 262: p->viscol += vbl;
1.136 schwarze 263: vbl = 0;
264: }
1.140 kristaps 265:
1.153 kristaps 266: if (ASCII_HYPH == p->buf[i]) {
1.146 kristaps 267: (*p->letter)(p, '-');
1.153 kristaps 268: p->viscol += (*p->width)(p, '-');
269: } else {
1.146 kristaps 270: (*p->letter)(p, p->buf[i]);
1.153 kristaps 271: p->viscol += (*p->width)(p, p->buf[i]);
272: }
1.136 schwarze 273: }
274: vend += vbl;
275: vis = vend;
1.71 kristaps 276: }
1.111 kristaps 277:
1.91 kristaps 278: p->col = 0;
1.129 kristaps 279: p->overstep = 0;
1.15 kristaps 280:
1.91 kristaps 281: if ( ! (TERMP_NOBREAK & p->flags)) {
1.139 schwarze 282: p->viscol = 0;
1.146 kristaps 283: (*p->endline)(p);
1.15 kristaps 284: return;
1.71 kristaps 285: }
1.15 kristaps 286:
1.91 kristaps 287: if (TERMP_HANG & p->flags) {
288: /* We need one blank after the tag. */
1.129 kristaps 289: p->overstep = /* LINTED */
1.153 kristaps 290: vis - maxvis + (*p->width)(p, ' ');
1.91 kristaps 291:
292: /*
293: * Behave exactly the same way as groff:
1.92 kristaps 294: * If we have overstepped the margin, temporarily move
295: * it to the right and flag the rest of the line to be
296: * shorter.
1.91 kristaps 297: * If we landed right at the margin, be happy.
1.92 kristaps 298: * If we are one step before the margin, temporarily
299: * move it one step LEFT and flag the rest of the line
300: * to be longer.
1.91 kristaps 301: */
1.129 kristaps 302: if (p->overstep >= -1) {
303: assert((int)maxvis + p->overstep >= 0);
1.92 kristaps 304: /* LINTED */
1.129 kristaps 305: maxvis += p->overstep;
1.92 kristaps 306: } else
1.129 kristaps 307: p->overstep = 0;
1.91 kristaps 308:
309: } else if (TERMP_DANGLE & p->flags)
310: return;
1.15 kristaps 311:
1.92 kristaps 312: /* Right-pad. */
313: if (maxvis > vis + /* LINTED */
1.154 kristaps 314: ((TERMP_TWOSPACE & p->flags) ?
315: (*p->width)(p, ' ') : 0)) {
1.139 schwarze 316: p->viscol += maxvis - vis;
1.146 kristaps 317: (*p->advance)(p, maxvis - vis);
1.142 kristaps 318: vis += (maxvis - vis);
1.139 schwarze 319: } else { /* ...or newline break. */
1.146 kristaps 320: (*p->endline)(p);
1.139 schwarze 321: p->viscol = p->rmargin;
1.146 kristaps 322: (*p->advance)(p, p->rmargin);
1.91 kristaps 323: }
1.15 kristaps 324: }
325:
326:
1.71 kristaps 327: /*
328: * A newline only breaks an existing line; it won't assert vertical
329: * space. All data in the output buffer is flushed prior to the newline
330: * assertion.
331: */
332: void
333: term_newln(struct termp *p)
1.15 kristaps 334: {
335:
1.71 kristaps 336: p->flags |= TERMP_NOSPACE;
1.139 schwarze 337: if (0 == p->col && 0 == p->viscol) {
1.71 kristaps 338: p->flags &= ~TERMP_NOLPAD;
1.15 kristaps 339: return;
1.16 kristaps 340: }
1.71 kristaps 341: term_flushln(p);
342: p->flags &= ~TERMP_NOLPAD;
1.16 kristaps 343: }
344:
345:
1.71 kristaps 346: /*
347: * Asserts a vertical space (a full, empty line-break between lines).
348: * Note that if used twice, this will cause two blank spaces and so on.
349: * All data in the output buffer is flushed prior to the newline
350: * assertion.
351: */
352: void
353: term_vspace(struct termp *p)
1.16 kristaps 354: {
355:
1.62 kristaps 356: term_newln(p);
1.139 schwarze 357: p->viscol = 0;
1.146 kristaps 358: (*p->endline)(p);
1.16 kristaps 359: }
360:
361:
1.71 kristaps 362: static void
1.163 kristaps 363: spec(struct termp *p, enum roffdeco d, const char *word, size_t len)
1.17 kristaps 364: {
1.71 kristaps 365: const char *rhs;
366: size_t sz;
1.17 kristaps 367:
1.161 kristaps 368: rhs = chars_spec2str(p->symtab, word, len, &sz);
1.125 kristaps 369: if (rhs)
370: encode(p, rhs, sz);
1.163 kristaps 371: else if (DECO_SSPECIAL == d)
372: encode(p, word, len);
1.94 kristaps 373: }
374:
375:
376: static void
1.125 kristaps 377: res(struct termp *p, const char *word, size_t len)
1.94 kristaps 378: {
379: const char *rhs;
380: size_t sz;
381:
1.161 kristaps 382: rhs = chars_res2str(p->symtab, word, len, &sz);
1.125 kristaps 383: if (rhs)
384: encode(p, rhs, sz);
385: }
386:
387:
388: void
389: term_fontlast(struct termp *p)
390: {
391: enum termfont f;
392:
393: f = p->fontl;
394: p->fontl = p->fontq[p->fonti];
395: p->fontq[p->fonti] = f;
396: }
397:
398:
399: void
400: term_fontrepl(struct termp *p, enum termfont f)
401: {
402:
403: p->fontl = p->fontq[p->fonti];
404: p->fontq[p->fonti] = f;
405: }
406:
407:
408: void
409: term_fontpush(struct termp *p, enum termfont f)
410: {
411:
412: assert(p->fonti + 1 < 10);
413: p->fontl = p->fontq[p->fonti];
414: p->fontq[++p->fonti] = f;
415: }
416:
417:
418: const void *
419: term_fontq(struct termp *p)
420: {
421:
422: return(&p->fontq[p->fonti]);
423: }
424:
425:
426: enum termfont
427: term_fonttop(struct termp *p)
428: {
429:
430: return(p->fontq[p->fonti]);
431: }
432:
433:
434: void
435: term_fontpopq(struct termp *p, const void *key)
436: {
437:
438: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
439: p->fonti--;
440: assert(p->fonti >= 0);
441: }
1.94 kristaps 442:
1.125 kristaps 443:
444: void
445: term_fontpop(struct termp *p)
446: {
447:
448: assert(p->fonti);
449: p->fonti--;
1.17 kristaps 450: }
451:
452:
1.71 kristaps 453: /*
454: * Handle pwords, partial words, which may be either a single word or a
455: * phrase that cannot be broken down (such as a literal string). This
456: * handles word styling.
457: */
1.86 kristaps 458: void
459: term_word(struct termp *p, const char *word)
1.65 kristaps 460: {
1.124 kristaps 461: const char *sv, *seq;
1.125 kristaps 462: int sz;
1.124 kristaps 463: size_t ssz;
464: enum roffdeco deco;
1.71 kristaps 465:
1.100 kristaps 466: sv = word;
467:
1.123 kristaps 468: if (word[0] && '\0' == word[1])
1.100 kristaps 469: switch (word[0]) {
470: case('.'):
471: /* FALLTHROUGH */
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: if ( ! (TERMP_IGNDELIM & p->flags))
486: p->flags |= TERMP_NOSPACE;
487: break;
488: default:
489: break;
490: }
1.65 kristaps 491:
1.133 kristaps 492: if ( ! (TERMP_NOSPACE & p->flags)) {
1.151 schwarze 493: if ( ! (TERMP_KEEP & p->flags)) {
494: if (TERMP_PREKEEP & p->flags)
495: p->flags |= TERMP_KEEP;
1.133 kristaps 496: bufferc(p, ' ');
1.151 schwarze 497: if (TERMP_SENTENCE & p->flags)
498: bufferc(p, ' ');
499: } else
500: bufferc(p, ASCII_NBRSP);
1.133 kristaps 501: }
1.65 kristaps 502:
1.71 kristaps 503: if ( ! (p->flags & TERMP_NONOSPACE))
504: p->flags &= ~TERMP_NOSPACE;
1.166 kristaps 505: else
506: p->flags |= TERMP_NOSPACE;
1.133 kristaps 507:
508: p->flags &= ~TERMP_SENTENCE;
1.65 kristaps 509:
1.162 kristaps 510: while (*word) {
511: if ((ssz = strcspn(word, "\\")) > 0)
512: encode(p, word, ssz);
1.124 kristaps 513:
1.162 kristaps 514: word += ssz;
515: if ('\\' != *word)
1.124 kristaps 516: continue;
517:
518: seq = ++word;
519: sz = a2roffdeco(&deco, &seq, &ssz);
520:
521: switch (deco) {
522: case (DECO_RESERVED):
1.125 kristaps 523: res(p, seq, ssz);
1.124 kristaps 524: break;
525: case (DECO_SPECIAL):
1.163 kristaps 526: /* FALLTHROUGH */
527: case (DECO_SSPECIAL):
528: spec(p, deco, seq, ssz);
1.124 kristaps 529: break;
530: case (DECO_BOLD):
1.125 kristaps 531: term_fontrepl(p, TERMFONT_BOLD);
1.124 kristaps 532: break;
533: case (DECO_ITALIC):
1.125 kristaps 534: term_fontrepl(p, TERMFONT_UNDER);
1.124 kristaps 535: break;
536: case (DECO_ROMAN):
1.125 kristaps 537: term_fontrepl(p, TERMFONT_NONE);
1.124 kristaps 538: break;
539: case (DECO_PREVIOUS):
1.125 kristaps 540: term_fontlast(p);
1.124 kristaps 541: break;
542: default:
543: break;
544: }
1.127 kristaps 545:
1.124 kristaps 546: word += sz;
1.127 kristaps 547: if (DECO_NOSPACE == deco && '\0' == *word)
548: p->flags |= TERMP_NOSPACE;
1.124 kristaps 549: }
1.65 kristaps 550:
1.131 kristaps 551: /*
552: * Note that we don't process the pipe: the parser sees it as
553: * punctuation, but we don't in terms of typography.
554: */
1.162 kristaps 555: if (sv[0] && '\0' == sv[1])
1.100 kristaps 556: switch (sv[0]) {
557: case('('):
558: /* FALLTHROUGH */
559: case('['):
560: p->flags |= TERMP_NOSPACE;
561: break;
562: default:
563: break;
564: }
1.65 kristaps 565: }
566:
567:
1.71 kristaps 568: static void
1.125 kristaps 569: adjbuf(struct termp *p, size_t sz)
1.51 kristaps 570: {
571:
1.125 kristaps 572: if (0 == p->maxcols)
573: p->maxcols = 1024;
574: while (sz >= p->maxcols)
575: p->maxcols <<= 2;
576:
577: p->buf = realloc(p->buf, p->maxcols);
578: if (NULL == p->buf) {
579: perror(NULL);
1.167 ! schwarze 580: exit(MANDOCLEVEL_SYSERR);
1.71 kristaps 581: }
1.51 kristaps 582: }
583:
1.79 kristaps 584:
585: static void
1.125 kristaps 586: bufferc(struct termp *p, char c)
587: {
588:
589: if (p->col + 1 >= p->maxcols)
590: adjbuf(p, p->col + 1);
591:
1.126 kristaps 592: p->buf[(int)p->col++] = c;
1.125 kristaps 593: }
594:
595:
596: static void
597: encode(struct termp *p, const char *word, size_t sz)
598: {
599: enum termfont f;
600: int i;
601:
602: /*
603: * Encode and buffer a string of characters. If the current
604: * font mode is unset, buffer directly, else encode then buffer
605: * character by character.
606: */
607:
1.147 kristaps 608: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.165 kristaps 609: if (p->col + sz >= p->maxcols)
610: adjbuf(p, p->col + sz);
611: memcpy(&p->buf[(int)p->col], word, sz);
612: p->col += sz;
1.125 kristaps 613: return;
614: }
615:
1.165 kristaps 616: /* Pre-buffer, assuming worst-case. */
617:
618: if (p->col + 1 + (sz * 3) >= p->maxcols)
619: adjbuf(p, p->col + 1 + (sz * 3));
620:
1.125 kristaps 621: for (i = 0; i < (int)sz; i++) {
622: if ( ! isgraph((u_char)word[i])) {
1.165 kristaps 623: p->buf[(int)p->col++] = word[i];
1.125 kristaps 624: continue;
1.79 kristaps 625: }
1.125 kristaps 626:
627: if (TERMFONT_UNDER == f)
1.165 kristaps 628: p->buf[(int)p->col++] = '_';
1.125 kristaps 629: else
1.165 kristaps 630: p->buf[(int)p->col++] = word[i];
1.125 kristaps 631:
1.165 kristaps 632: p->buf[(int)p->col++] = 8;
633: p->buf[(int)p->col++] = word[i];
1.79 kristaps 634: }
635: }
1.106 kristaps 636:
637:
1.107 kristaps 638: size_t
1.149 kristaps 639: term_len(const struct termp *p, size_t sz)
640: {
641:
642: return((*p->width)(p, ' ') * sz);
643: }
644:
645:
646: size_t
647: term_strlen(const struct termp *p, const char *cp)
648: {
649: size_t sz;
650:
651: for (sz = 0; *cp; cp++)
652: sz += (*p->width)(p, *cp);
653:
654: return(sz);
655: }
656:
657:
1.157 kristaps 658: /* ARGSUSED */
1.149 kristaps 659: size_t
660: term_vspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 661: {
662: double r;
663:
1.107 kristaps 664: switch (su->unit) {
1.106 kristaps 665: case (SCALE_CM):
1.107 kristaps 666: r = su->scale * 2;
1.106 kristaps 667: break;
668: case (SCALE_IN):
1.107 kristaps 669: r = su->scale * 6;
1.106 kristaps 670: break;
671: case (SCALE_PC):
1.107 kristaps 672: r = su->scale;
1.106 kristaps 673: break;
674: case (SCALE_PT):
1.107 kristaps 675: r = su->scale / 8;
1.106 kristaps 676: break;
677: case (SCALE_MM):
1.107 kristaps 678: r = su->scale / 1000;
1.106 kristaps 679: break;
680: case (SCALE_VS):
1.107 kristaps 681: r = su->scale;
1.106 kristaps 682: break;
683: default:
1.107 kristaps 684: r = su->scale - 1;
1.106 kristaps 685: break;
686: }
687:
688: if (r < 0.0)
689: r = 0.0;
1.107 kristaps 690: return(/* LINTED */(size_t)
1.106 kristaps 691: r);
692: }
693:
694:
1.107 kristaps 695: size_t
1.149 kristaps 696: term_hspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 697: {
1.156 kristaps 698: double v;
1.108 kristaps 699:
1.156 kristaps 700: v = ((*p->hspan)(p, su));
701: if (v < 0.0)
702: v = 0.0;
703: return((size_t) /* LINTED */
704: v);
1.106 kristaps 705: }
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