Annotation of mandoc/term.c, Revision 1.169
1.169 ! schwarze 1: /* $Id: term.c,v 1.168 2010/08/20 23:22:09 schwarze 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: */
1.169 ! schwarze 172: while (i < (int)p->col && '\t' == p->buf[i]) {
1.154 kristaps 173: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.138 schwarze 174: vbl += vend - vis;
175: vis = vend;
1.169 ! schwarze 176: i++;
1.138 schwarze 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 */
1.169 ! schwarze 187: for (j = i, 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: }
1.138 schwarze 229:
1.130 kristaps 230: /* Write out the [remaining] word. */
1.136 schwarze 231: for ( ; i < (int)p->col; i++) {
1.140 kristaps 232: if (vend > bp && jhy > 0 && i > jhy)
233: break;
1.138 schwarze 234: if ('\t' == p->buf[i])
235: break;
1.136 schwarze 236: if (' ' == p->buf[i]) {
1.164 kristaps 237: j = i;
238: while (' ' == p->buf[i])
1.136 schwarze 239: i++;
1.164 kristaps 240: vbl += (i - j) * (*p->width)(p, ' ');
1.71 kristaps 241: break;
1.136 schwarze 242: }
243: if (ASCII_NBRSP == p->buf[i]) {
1.153 kristaps 244: vbl += (*p->width)(p, ' ');
1.136 schwarze 245: continue;
246: }
1.130 kristaps 247:
1.136 schwarze 248: /*
249: * Now we definitely know there will be
250: * printable characters to output,
251: * so write preceding white space now.
252: */
253: if (vbl) {
1.146 kristaps 254: (*p->advance)(p, vbl);
1.139 schwarze 255: p->viscol += vbl;
1.136 schwarze 256: vbl = 0;
257: }
1.140 kristaps 258:
1.153 kristaps 259: if (ASCII_HYPH == p->buf[i]) {
1.146 kristaps 260: (*p->letter)(p, '-');
1.153 kristaps 261: p->viscol += (*p->width)(p, '-');
262: } else {
1.146 kristaps 263: (*p->letter)(p, p->buf[i]);
1.153 kristaps 264: p->viscol += (*p->width)(p, p->buf[i]);
265: }
1.136 schwarze 266: }
267: vend += vbl;
268: vis = vend;
1.71 kristaps 269: }
1.168 schwarze 270:
271: /*
272: * If there was trailing white space, it was not printed;
273: * so reset the cursor position accordingly.
274: */
275: vis -= vbl;
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
1.163 kristaps 362: spec(struct termp *p, enum roffdeco d, 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:
1.161 kristaps 367: rhs = chars_spec2str(p->symtab, word, len, &sz);
1.125 kristaps 368: if (rhs)
369: encode(p, rhs, sz);
1.163 kristaps 370: else if (DECO_SSPECIAL == d)
371: encode(p, word, len);
1.94 kristaps 372: }
373:
374:
375: static void
1.125 kristaps 376: res(struct termp *p, const char *word, size_t len)
1.94 kristaps 377: {
378: const char *rhs;
379: size_t sz;
380:
1.161 kristaps 381: rhs = chars_res2str(p->symtab, word, len, &sz);
1.125 kristaps 382: if (rhs)
383: encode(p, rhs, sz);
384: }
385:
386:
387: void
388: term_fontlast(struct termp *p)
389: {
390: enum termfont f;
391:
392: f = p->fontl;
393: p->fontl = p->fontq[p->fonti];
394: p->fontq[p->fonti] = f;
395: }
396:
397:
398: void
399: term_fontrepl(struct termp *p, enum termfont f)
400: {
401:
402: p->fontl = p->fontq[p->fonti];
403: p->fontq[p->fonti] = f;
404: }
405:
406:
407: void
408: term_fontpush(struct termp *p, enum termfont f)
409: {
410:
411: assert(p->fonti + 1 < 10);
412: p->fontl = p->fontq[p->fonti];
413: p->fontq[++p->fonti] = f;
414: }
415:
416:
417: const void *
418: term_fontq(struct termp *p)
419: {
420:
421: return(&p->fontq[p->fonti]);
422: }
423:
424:
425: enum termfont
426: term_fonttop(struct termp *p)
427: {
428:
429: return(p->fontq[p->fonti]);
430: }
431:
432:
433: void
434: term_fontpopq(struct termp *p, const void *key)
435: {
436:
437: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
438: p->fonti--;
439: assert(p->fonti >= 0);
440: }
1.94 kristaps 441:
1.125 kristaps 442:
443: void
444: term_fontpop(struct termp *p)
445: {
446:
447: assert(p->fonti);
448: p->fonti--;
1.17 kristaps 449: }
450:
451:
1.71 kristaps 452: /*
453: * Handle pwords, partial words, which may be either a single word or a
454: * phrase that cannot be broken down (such as a literal string). This
455: * handles word styling.
456: */
1.86 kristaps 457: void
458: term_word(struct termp *p, const char *word)
1.65 kristaps 459: {
1.124 kristaps 460: const char *sv, *seq;
1.125 kristaps 461: int sz;
1.124 kristaps 462: size_t ssz;
463: enum roffdeco deco;
1.71 kristaps 464:
1.100 kristaps 465: sv = word;
466:
1.123 kristaps 467: if (word[0] && '\0' == word[1])
1.100 kristaps 468: switch (word[0]) {
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: /* FALLTHROUGH */
483: case(']'):
484: if ( ! (TERMP_IGNDELIM & p->flags))
485: p->flags |= TERMP_NOSPACE;
486: break;
487: default:
488: break;
489: }
1.65 kristaps 490:
1.133 kristaps 491: if ( ! (TERMP_NOSPACE & p->flags)) {
1.151 schwarze 492: if ( ! (TERMP_KEEP & p->flags)) {
493: if (TERMP_PREKEEP & p->flags)
494: p->flags |= TERMP_KEEP;
1.133 kristaps 495: bufferc(p, ' ');
1.151 schwarze 496: if (TERMP_SENTENCE & p->flags)
497: bufferc(p, ' ');
498: } else
499: bufferc(p, ASCII_NBRSP);
1.133 kristaps 500: }
1.65 kristaps 501:
1.71 kristaps 502: if ( ! (p->flags & TERMP_NONOSPACE))
503: p->flags &= ~TERMP_NOSPACE;
1.166 kristaps 504: else
505: p->flags |= TERMP_NOSPACE;
1.133 kristaps 506:
507: p->flags &= ~TERMP_SENTENCE;
1.65 kristaps 508:
1.162 kristaps 509: while (*word) {
510: if ((ssz = strcspn(word, "\\")) > 0)
511: encode(p, word, ssz);
1.124 kristaps 512:
1.162 kristaps 513: word += ssz;
514: if ('\\' != *word)
1.124 kristaps 515: continue;
516:
517: seq = ++word;
518: sz = a2roffdeco(&deco, &seq, &ssz);
519:
520: switch (deco) {
521: case (DECO_RESERVED):
1.125 kristaps 522: res(p, seq, ssz);
1.124 kristaps 523: break;
524: case (DECO_SPECIAL):
1.163 kristaps 525: /* FALLTHROUGH */
526: case (DECO_SSPECIAL):
527: spec(p, deco, seq, ssz);
1.124 kristaps 528: break;
529: case (DECO_BOLD):
1.125 kristaps 530: term_fontrepl(p, TERMFONT_BOLD);
1.124 kristaps 531: break;
532: case (DECO_ITALIC):
1.125 kristaps 533: term_fontrepl(p, TERMFONT_UNDER);
1.124 kristaps 534: break;
535: case (DECO_ROMAN):
1.125 kristaps 536: term_fontrepl(p, TERMFONT_NONE);
1.124 kristaps 537: break;
538: case (DECO_PREVIOUS):
1.125 kristaps 539: term_fontlast(p);
1.124 kristaps 540: break;
541: default:
542: break;
543: }
1.127 kristaps 544:
1.124 kristaps 545: word += sz;
1.127 kristaps 546: if (DECO_NOSPACE == deco && '\0' == *word)
547: p->flags |= TERMP_NOSPACE;
1.124 kristaps 548: }
1.65 kristaps 549:
1.131 kristaps 550: /*
551: * Note that we don't process the pipe: the parser sees it as
552: * punctuation, but we don't in terms of typography.
553: */
1.162 kristaps 554: if (sv[0] && '\0' == sv[1])
1.100 kristaps 555: switch (sv[0]) {
556: case('('):
557: /* FALLTHROUGH */
558: case('['):
559: p->flags |= TERMP_NOSPACE;
560: break;
561: default:
562: break;
563: }
1.65 kristaps 564: }
565:
566:
1.71 kristaps 567: static void
1.125 kristaps 568: adjbuf(struct termp *p, size_t sz)
1.51 kristaps 569: {
570:
1.125 kristaps 571: if (0 == p->maxcols)
572: p->maxcols = 1024;
573: while (sz >= p->maxcols)
574: p->maxcols <<= 2;
575:
576: p->buf = realloc(p->buf, p->maxcols);
577: if (NULL == p->buf) {
578: perror(NULL);
1.167 schwarze 579: exit(MANDOCLEVEL_SYSERR);
1.71 kristaps 580: }
1.51 kristaps 581: }
582:
1.79 kristaps 583:
584: static void
1.125 kristaps 585: bufferc(struct termp *p, char c)
586: {
587:
588: if (p->col + 1 >= p->maxcols)
589: adjbuf(p, p->col + 1);
590:
1.126 kristaps 591: p->buf[(int)p->col++] = c;
1.125 kristaps 592: }
593:
594:
595: static void
596: encode(struct termp *p, const char *word, size_t sz)
597: {
598: enum termfont f;
599: int i;
600:
601: /*
602: * Encode and buffer a string of characters. If the current
603: * font mode is unset, buffer directly, else encode then buffer
604: * character by character.
605: */
606:
1.147 kristaps 607: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.165 kristaps 608: if (p->col + sz >= p->maxcols)
609: adjbuf(p, p->col + sz);
610: memcpy(&p->buf[(int)p->col], word, sz);
611: p->col += sz;
1.125 kristaps 612: return;
613: }
614:
1.165 kristaps 615: /* Pre-buffer, assuming worst-case. */
616:
617: if (p->col + 1 + (sz * 3) >= p->maxcols)
618: adjbuf(p, p->col + 1 + (sz * 3));
619:
1.125 kristaps 620: for (i = 0; i < (int)sz; i++) {
621: if ( ! isgraph((u_char)word[i])) {
1.165 kristaps 622: p->buf[(int)p->col++] = word[i];
1.125 kristaps 623: continue;
1.79 kristaps 624: }
1.125 kristaps 625:
626: if (TERMFONT_UNDER == f)
1.165 kristaps 627: p->buf[(int)p->col++] = '_';
1.125 kristaps 628: else
1.165 kristaps 629: p->buf[(int)p->col++] = word[i];
1.125 kristaps 630:
1.165 kristaps 631: p->buf[(int)p->col++] = 8;
632: p->buf[(int)p->col++] = word[i];
1.79 kristaps 633: }
634: }
1.106 kristaps 635:
636:
1.107 kristaps 637: size_t
1.149 kristaps 638: term_len(const struct termp *p, size_t sz)
639: {
640:
641: return((*p->width)(p, ' ') * sz);
642: }
643:
644:
645: size_t
646: term_strlen(const struct termp *p, const char *cp)
647: {
648: size_t sz;
649:
650: for (sz = 0; *cp; cp++)
651: sz += (*p->width)(p, *cp);
652:
653: return(sz);
654: }
655:
656:
1.157 kristaps 657: /* ARGSUSED */
1.149 kristaps 658: size_t
659: term_vspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 660: {
661: double r;
662:
1.107 kristaps 663: switch (su->unit) {
1.106 kristaps 664: case (SCALE_CM):
1.107 kristaps 665: r = su->scale * 2;
1.106 kristaps 666: break;
667: case (SCALE_IN):
1.107 kristaps 668: r = su->scale * 6;
1.106 kristaps 669: break;
670: case (SCALE_PC):
1.107 kristaps 671: r = su->scale;
1.106 kristaps 672: break;
673: case (SCALE_PT):
1.107 kristaps 674: r = su->scale / 8;
1.106 kristaps 675: break;
676: case (SCALE_MM):
1.107 kristaps 677: r = su->scale / 1000;
1.106 kristaps 678: break;
679: case (SCALE_VS):
1.107 kristaps 680: r = su->scale;
1.106 kristaps 681: break;
682: default:
1.107 kristaps 683: r = su->scale - 1;
1.106 kristaps 684: break;
685: }
686:
687: if (r < 0.0)
688: r = 0.0;
1.107 kristaps 689: return(/* LINTED */(size_t)
1.106 kristaps 690: r);
691: }
692:
693:
1.107 kristaps 694: size_t
1.149 kristaps 695: term_hspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 696: {
1.156 kristaps 697: double v;
1.108 kristaps 698:
1.156 kristaps 699: v = ((*p->hspan)(p, su));
700: if (v < 0.0)
701: v = 0.0;
702: return((size_t) /* LINTED */
703: v);
1.106 kristaps 704: }
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