Annotation of src/usr.bin/mandoc/term.c, Revision 1.80
1.80 ! schwarze 1: /* $Id: term.c,v 1.79 2014/03/21 22:17:01 schwarze Exp $ */
1.1 kristaps 2: /*
1.59 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.77 schwarze 4: * Copyright (c) 2010-2014 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>
1.1 kristaps 22: #include <stdio.h>
23: #include <stdlib.h>
24: #include <string.h>
25:
1.34 schwarze 26: #include "mandoc.h"
1.79 schwarze 27: #include "mandoc_aux.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:
1.64 schwarze 32: static size_t cond_width(const struct termp *, int, int *);
1.71 schwarze 33: static void adjbuf(struct termp *p, size_t);
1.59 schwarze 34: static void bufferc(struct termp *, char);
35: static void encode(struct termp *, const char *, size_t);
36: static void encode1(struct termp *, int);
1.1 kristaps 37:
1.37 schwarze 38: void
39: term_free(struct termp *p)
1.1 kristaps 40: {
41:
1.37 schwarze 42: if (p->buf)
43: free(p->buf);
44: if (p->symtab)
1.59 schwarze 45: mchars_free(p->symtab);
1.37 schwarze 46:
47: free(p);
1.1 kristaps 48: }
49:
50:
1.13 schwarze 51: void
1.37 schwarze 52: term_begin(struct termp *p, term_margin head,
53: term_margin foot, const void *arg)
1.1 kristaps 54: {
55:
1.37 schwarze 56: p->headf = head;
57: p->footf = foot;
58: p->argf = arg;
59: (*p->begin)(p);
1.1 kristaps 60: }
61:
62:
1.37 schwarze 63: void
64: term_end(struct termp *p)
1.1 kristaps 65: {
66:
1.37 schwarze 67: (*p->end)(p);
1.1 kristaps 68: }
69:
70: /*
71: * Flush a line of text. A "line" is loosely defined as being something
72: * that should be followed by a newline, regardless of whether it's
73: * broken apart by newlines getting there. A line can also be a
1.27 schwarze 74: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
75: * not have a trailing newline.
1.1 kristaps 76: *
1.27 schwarze 77: * The following flags may be specified:
1.1 kristaps 78: *
79: * - TERMP_NOBREAK: this is the most important and is used when making
1.61 schwarze 80: * columns. In short: don't print a newline and instead expect the
81: * next call to do the padding up to the start of the next column.
1.72 schwarze 82: * p->trailspace may be set to 0, 1, or 2, depending on how many
83: * space characters are required at the end of the column.
1.9 schwarze 84: *
1.6 schwarze 85: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
86: * the line is overrun, and don't pad-right if it's underrun.
87: *
88: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
1.61 schwarze 89: * overrunning, instead save the position and continue at that point
1.6 schwarze 90: * when the next invocation.
1.1 kristaps 91: *
92: * In-line line breaking:
93: *
94: * If TERMP_NOBREAK is specified and the line overruns the right
95: * margin, it will break and pad-right to the right margin after
96: * writing. If maxrmargin is violated, it will break and continue
1.19 schwarze 97: * writing from the right-margin, which will lead to the above scenario
98: * upon exit. Otherwise, the line will break at the right margin.
1.1 kristaps 99: */
100: void
101: term_flushln(struct termp *p)
102: {
1.71 schwarze 103: size_t i; /* current input position in p->buf */
1.66 schwarze 104: int ntab; /* number of tabs to prepend */
1.19 schwarze 105: size_t vis; /* current visual position on output */
106: size_t vbl; /* number of blanks to prepend to output */
1.33 schwarze 107: size_t vend; /* end of word visual position on output */
1.19 schwarze 108: size_t bp; /* visual right border position */
1.51 schwarze 109: size_t dv; /* temporary for visual pos calculations */
1.71 schwarze 110: size_t j; /* temporary loop index for p->buf */
111: size_t jhy; /* last hyph before overflow w/r/t j */
1.42 schwarze 112: size_t maxvis; /* output position of visible boundary */
113: size_t mmax; /* used in calculating bp */
1.1 kristaps 114:
115: /*
116: * First, establish the maximum columns of "visible" content.
117: * This is usually the difference between the right-margin and
118: * an indentation, but can be, for tagged lists or columns, a
1.73 schwarze 119: * small set of values.
120: *
121: * The following unsigned-signed subtractions look strange,
122: * but they are actually correct. If the int p->overstep
123: * is negative, it gets sign extended. Subtracting that
124: * very large size_t effectively adds a small number to dv.
1.1 kristaps 125: */
1.54 schwarze 126: assert (p->rmargin >= p->offset);
1.53 schwarze 127: dv = p->rmargin - p->offset;
128: maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
129: dv = p->maxrmargin - p->offset;
130: mmax = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
1.9 schwarze 131:
1.1 kristaps 132: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.19 schwarze 133:
1.33 schwarze 134: /*
1.61 schwarze 135: * Calculate the required amount of padding.
1.33 schwarze 136: */
1.61 schwarze 137: vbl = p->offset + p->overstep > p->viscol ?
138: p->offset + p->overstep - p->viscol : 0;
1.33 schwarze 139:
1.53 schwarze 140: vis = vend = 0;
141: i = 0;
1.19 schwarze 142:
1.59 schwarze 143: while (i < p->col) {
1.22 schwarze 144: /*
1.42 schwarze 145: * Handle literal tab characters: collapse all
146: * subsequent tabs into a single huge set of spaces.
1.30 schwarze 147: */
1.66 schwarze 148: ntab = 0;
1.59 schwarze 149: while (i < p->col && '\t' == p->buf[i]) {
1.42 schwarze 150: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.30 schwarze 151: vbl += vend - vis;
152: vis = vend;
1.66 schwarze 153: ntab++;
1.49 schwarze 154: i++;
1.30 schwarze 155: }
1.22 schwarze 156:
1.1 kristaps 157: /*
158: * Count up visible word characters. Control sequences
159: * (starting with the CSI) aren't counted. A space
160: * generates a non-printing word, which is valid (the
161: * space is printed according to regular spacing rules).
162: */
163:
1.59 schwarze 164: for (j = i, jhy = 0; j < p->col; j++) {
1.69 schwarze 165: if (' ' == p->buf[j] || '\t' == p->buf[j])
1.1 kristaps 166: break;
1.42 schwarze 167:
168: /* Back over the the last printed character. */
169: if (8 == p->buf[j]) {
170: assert(j);
171: vend -= (*p->width)(p, p->buf[j - 1]);
172: continue;
173: }
174:
175: /* Regular word. */
176: /* Break at the hyphen point if we overrun. */
177: if (vend > vis && vend < bp &&
1.77 schwarze 178: (ASCII_HYPH == p->buf[j] ||
179: ASCII_BREAK == p->buf[j]))
1.42 schwarze 180: jhy = j;
181:
1.78 schwarze 182: /*
183: * Hyphenation now decided, put back a real
184: * hyphen such that we get the correct width.
185: */
186: if (ASCII_HYPH == p->buf[j])
187: p->buf[j] = '-';
188:
1.42 schwarze 189: vend += (*p->width)(p, p->buf[j]);
1.1 kristaps 190: }
191:
192: /*
1.5 schwarze 193: * Find out whether we would exceed the right margin.
1.33 schwarze 194: * If so, break to the next line.
1.5 schwarze 195: */
1.33 schwarze 196: if (vend > bp && 0 == jhy && vis > 0) {
1.22 schwarze 197: vend -= vis;
1.37 schwarze 198: (*p->endline)(p);
1.62 schwarze 199: p->viscol = 0;
1.5 schwarze 200: if (TERMP_NOBREAK & p->flags) {
1.62 schwarze 201: vbl = p->rmargin;
1.22 schwarze 202: vend += p->rmargin - p->offset;
1.62 schwarze 203: } else
1.33 schwarze 204: vbl = p->offset;
1.66 schwarze 205:
206: /* use pending tabs on the new line */
207:
208: if (0 < ntab)
209: vbl += ntab * p->tabwidth;
1.33 schwarze 210:
1.73 schwarze 211: /*
212: * Remove the p->overstep width.
213: * Again, if p->overstep is negative,
214: * sign extension does the right thing.
215: */
1.33 schwarze 216:
1.53 schwarze 217: bp += (size_t)p->overstep;
1.26 schwarze 218: p->overstep = 0;
1.1 kristaps 219: }
1.30 schwarze 220:
1.33 schwarze 221: /* Write out the [remaining] word. */
1.59 schwarze 222: for ( ; i < p->col; i++) {
1.25 schwarze 223: if (vend > bp && jhy > 0 && i > jhy)
1.30 schwarze 224: break;
225: if ('\t' == p->buf[i])
1.1 kristaps 226: break;
1.22 schwarze 227: if (' ' == p->buf[i]) {
1.46 schwarze 228: j = i;
229: while (' ' == p->buf[i])
1.33 schwarze 230: i++;
1.71 schwarze 231: dv = (i - j) * (*p->width)(p, ' ');
1.51 schwarze 232: vbl += dv;
233: vend += dv;
1.22 schwarze 234: break;
235: }
1.33 schwarze 236: if (ASCII_NBRSP == p->buf[i]) {
1.42 schwarze 237: vbl += (*p->width)(p, ' ');
1.33 schwarze 238: continue;
239: }
1.77 schwarze 240: if (ASCII_BREAK == p->buf[i])
241: continue;
1.33 schwarze 242:
243: /*
244: * Now we definitely know there will be
245: * printable characters to output,
246: * so write preceding white space now.
247: */
248: if (vbl) {
1.37 schwarze 249: (*p->advance)(p, vbl);
1.33 schwarze 250: p->viscol += vbl;
251: vbl = 0;
1.61 schwarze 252: }
253:
254: (*p->letter)(p, p->buf[i]);
255: if (8 == p->buf[i])
256: p->viscol -= (*p->width)(p, p->buf[i-1]);
257: else
1.42 schwarze 258: p->viscol += (*p->width)(p, p->buf[i]);
1.1 kristaps 259: }
1.22 schwarze 260: vis = vend;
1.1 kristaps 261: }
1.48 schwarze 262:
263: /*
264: * If there was trailing white space, it was not printed;
265: * so reset the cursor position accordingly.
266: */
1.61 schwarze 267: if (vis)
268: vis -= vbl;
1.18 schwarze 269:
1.9 schwarze 270: p->col = 0;
1.26 schwarze 271: p->overstep = 0;
1.1 kristaps 272:
1.9 schwarze 273: if ( ! (TERMP_NOBREAK & p->flags)) {
1.29 schwarze 274: p->viscol = 0;
1.37 schwarze 275: (*p->endline)(p);
1.1 kristaps 276: return;
277: }
278:
1.9 schwarze 279: if (TERMP_HANG & p->flags) {
1.72 schwarze 280: p->overstep = (int)(vis - maxvis +
281: p->trailspace * (*p->width)(p, ' '));
1.9 schwarze 282:
283: /*
284: * If we have overstepped the margin, temporarily move
285: * it to the right and flag the rest of the line to be
286: * shorter.
1.73 schwarze 287: * If there is a request to keep the columns together,
288: * allow negative overstep when the column is not full.
1.9 schwarze 289: */
1.73 schwarze 290: if (p->trailspace && p->overstep < 0)
1.26 schwarze 291: p->overstep = 0;
1.61 schwarze 292: return;
1.9 schwarze 293:
294: } else if (TERMP_DANGLE & p->flags)
295: return;
1.1 kristaps 296:
1.61 schwarze 297: /* If the column was overrun, break the line. */
1.72 schwarze 298: if (maxvis < vis + p->trailspace * (*p->width)(p, ' ')) {
1.37 schwarze 299: (*p->endline)(p);
1.61 schwarze 300: p->viscol = 0;
1.9 schwarze 301: }
1.1 kristaps 302: }
303:
304:
305: /*
306: * A newline only breaks an existing line; it won't assert vertical
307: * space. All data in the output buffer is flushed prior to the newline
308: * assertion.
309: */
310: void
311: term_newln(struct termp *p)
312: {
313:
314: p->flags |= TERMP_NOSPACE;
1.61 schwarze 315: if (p->col || p->viscol)
316: term_flushln(p);
1.1 kristaps 317: }
318:
319:
320: /*
321: * Asserts a vertical space (a full, empty line-break between lines).
322: * Note that if used twice, this will cause two blank spaces and so on.
323: * All data in the output buffer is flushed prior to the newline
324: * assertion.
325: */
326: void
327: term_vspace(struct termp *p)
328: {
329:
330: term_newln(p);
1.29 schwarze 331: p->viscol = 0;
1.63 schwarze 332: if (0 < p->skipvsp)
333: p->skipvsp--;
334: else
335: (*p->endline)(p);
1.1 kristaps 336: }
337:
1.20 schwarze 338: void
339: term_fontlast(struct termp *p)
340: {
341: enum termfont f;
1.11 schwarze 342:
1.20 schwarze 343: f = p->fontl;
344: p->fontl = p->fontq[p->fonti];
345: p->fontq[p->fonti] = f;
346: }
347:
348:
349: void
350: term_fontrepl(struct termp *p, enum termfont f)
351: {
352:
353: p->fontl = p->fontq[p->fonti];
354: p->fontq[p->fonti] = f;
1.1 kristaps 355: }
356:
357:
1.20 schwarze 358: void
359: term_fontpush(struct termp *p, enum termfont f)
1.1 kristaps 360: {
1.7 schwarze 361:
1.20 schwarze 362: assert(p->fonti + 1 < 10);
363: p->fontl = p->fontq[p->fonti];
364: p->fontq[++p->fonti] = f;
365: }
1.1 kristaps 366:
367:
1.20 schwarze 368: const void *
369: term_fontq(struct termp *p)
370: {
1.1 kristaps 371:
1.20 schwarze 372: return(&p->fontq[p->fonti]);
373: }
1.1 kristaps 374:
375:
1.20 schwarze 376: enum termfont
377: term_fonttop(struct termp *p)
378: {
1.1 kristaps 379:
1.20 schwarze 380: return(p->fontq[p->fonti]);
381: }
1.7 schwarze 382:
383:
1.20 schwarze 384: void
385: term_fontpopq(struct termp *p, const void *key)
386: {
1.1 kristaps 387:
1.67 schwarze 388: while (p->fonti >= 0 && key < (void *)(p->fontq + p->fonti))
1.20 schwarze 389: p->fonti--;
390: assert(p->fonti >= 0);
391: }
1.1 kristaps 392:
393:
1.20 schwarze 394: void
395: term_fontpop(struct termp *p)
396: {
1.1 kristaps 397:
1.20 schwarze 398: assert(p->fonti);
399: p->fonti--;
1.1 kristaps 400: }
401:
402: /*
403: * Handle pwords, partial words, which may be either a single word or a
404: * phrase that cannot be broken down (such as a literal string). This
405: * handles word styling.
406: */
1.7 schwarze 407: void
408: term_word(struct termp *p, const char *word)
1.1 kristaps 409: {
1.75 schwarze 410: const char nbrsp[2] = { ASCII_NBRSP, 0 };
1.59 schwarze 411: const char *seq, *cp;
412: char c;
413: int sz, uc;
1.20 schwarze 414: size_t ssz;
1.59 schwarze 415: enum mandoc_esc esc;
1.1 kristaps 416:
1.31 schwarze 417: if ( ! (TERMP_NOSPACE & p->flags)) {
1.40 schwarze 418: if ( ! (TERMP_KEEP & p->flags)) {
1.31 schwarze 419: bufferc(p, ' ');
1.40 schwarze 420: if (TERMP_SENTENCE & p->flags)
421: bufferc(p, ' ');
422: } else
423: bufferc(p, ASCII_NBRSP);
1.31 schwarze 424: }
1.68 schwarze 425: if (TERMP_PREKEEP & p->flags)
426: p->flags |= TERMP_KEEP;
1.1 kristaps 427:
428: if ( ! (p->flags & TERMP_NONOSPACE))
429: p->flags &= ~TERMP_NOSPACE;
1.46 schwarze 430: else
431: p->flags |= TERMP_NOSPACE;
1.1 kristaps 432:
1.74 schwarze 433: p->flags &= ~TERMP_SENTENCE;
1.31 schwarze 434:
1.59 schwarze 435: while ('\0' != *word) {
1.64 schwarze 436: if ('\\' != *word) {
437: if (TERMP_SKIPCHAR & p->flags) {
438: p->flags &= ~TERMP_SKIPCHAR;
439: word++;
440: continue;
441: }
1.75 schwarze 442: if (TERMP_NBRWORD & p->flags) {
443: if (' ' == *word) {
444: encode(p, nbrsp, 1);
445: word++;
446: continue;
447: }
448: ssz = strcspn(word, "\\ ");
449: } else
450: ssz = strcspn(word, "\\");
1.45 schwarze 451: encode(p, word, ssz);
1.64 schwarze 452: word += (int)ssz;
1.20 schwarze 453: continue;
1.64 schwarze 454: }
1.20 schwarze 455:
1.59 schwarze 456: word++;
457: esc = mandoc_escape(&word, &seq, &sz);
458: if (ESCAPE_ERROR == esc)
459: break;
460:
461: if (TERMENC_ASCII != p->enc)
462: switch (esc) {
463: case (ESCAPE_UNICODE):
464: uc = mchars_num2uc(seq + 1, sz - 1);
465: if ('\0' == uc)
466: break;
467: encode1(p, uc);
468: continue;
469: case (ESCAPE_SPECIAL):
470: uc = mchars_spec2cp(p->symtab, seq, sz);
471: if (uc <= 0)
472: break;
473: encode1(p, uc);
474: continue;
475: default:
476: break;
477: }
1.20 schwarze 478:
1.59 schwarze 479: switch (esc) {
480: case (ESCAPE_UNICODE):
481: encode1(p, '?');
1.56 schwarze 482: break;
1.59 schwarze 483: case (ESCAPE_NUMBERED):
484: c = mchars_num2char(seq, sz);
485: if ('\0' != c)
486: encode(p, &c, 1);
1.20 schwarze 487: break;
1.59 schwarze 488: case (ESCAPE_SPECIAL):
489: cp = mchars_spec2str(p->symtab, seq, sz, &ssz);
490: if (NULL != cp)
491: encode(p, cp, ssz);
492: else if (1 == ssz)
493: encode(p, seq, sz);
1.20 schwarze 494: break;
1.59 schwarze 495: case (ESCAPE_FONTBOLD):
1.20 schwarze 496: term_fontrepl(p, TERMFONT_BOLD);
497: break;
1.59 schwarze 498: case (ESCAPE_FONTITALIC):
1.20 schwarze 499: term_fontrepl(p, TERMFONT_UNDER);
500: break;
1.70 schwarze 501: case (ESCAPE_FONTBI):
502: term_fontrepl(p, TERMFONT_BI);
503: break;
1.59 schwarze 504: case (ESCAPE_FONT):
505: /* FALLTHROUGH */
506: case (ESCAPE_FONTROMAN):
1.20 schwarze 507: term_fontrepl(p, TERMFONT_NONE);
508: break;
1.59 schwarze 509: case (ESCAPE_FONTPREV):
1.20 schwarze 510: term_fontlast(p);
511: break;
1.59 schwarze 512: case (ESCAPE_NOSPACE):
1.64 schwarze 513: if (TERMP_SKIPCHAR & p->flags)
514: p->flags &= ~TERMP_SKIPCHAR;
515: else if ('\0' == *word)
1.59 schwarze 516: p->flags |= TERMP_NOSPACE;
517: break;
1.64 schwarze 518: case (ESCAPE_SKIPCHAR):
519: p->flags |= TERMP_SKIPCHAR;
520: break;
1.20 schwarze 521: default:
522: break;
523: }
524: }
1.75 schwarze 525: p->flags &= ~TERMP_NBRWORD;
1.1 kristaps 526: }
527:
528: static void
1.71 schwarze 529: adjbuf(struct termp *p, size_t sz)
1.1 kristaps 530: {
531:
1.20 schwarze 532: if (0 == p->maxcols)
533: p->maxcols = 1024;
534: while (sz >= p->maxcols)
535: p->maxcols <<= 2;
536:
1.71 schwarze 537: p->buf = mandoc_realloc(p->buf, sizeof(int) * p->maxcols);
1.1 kristaps 538: }
539:
1.4 schwarze 540: static void
1.20 schwarze 541: bufferc(struct termp *p, char c)
542: {
543:
544: if (p->col + 1 >= p->maxcols)
545: adjbuf(p, p->col + 1);
546:
1.59 schwarze 547: p->buf[p->col++] = c;
1.20 schwarze 548: }
549:
1.59 schwarze 550: /*
551: * See encode().
552: * Do this for a single (probably unicode) value.
553: * Does not check for non-decorated glyphs.
554: */
555: static void
556: encode1(struct termp *p, int c)
557: {
558: enum termfont f;
559:
1.64 schwarze 560: if (TERMP_SKIPCHAR & p->flags) {
561: p->flags &= ~TERMP_SKIPCHAR;
562: return;
563: }
564:
1.70 schwarze 565: if (p->col + 6 >= p->maxcols)
566: adjbuf(p, p->col + 6);
1.59 schwarze 567:
568: f = term_fonttop(p);
569:
1.70 schwarze 570: if (TERMFONT_UNDER == f || TERMFONT_BI == f) {
1.59 schwarze 571: p->buf[p->col++] = '_';
1.70 schwarze 572: p->buf[p->col++] = 8;
573: }
574: if (TERMFONT_BOLD == f || TERMFONT_BI == f) {
575: if (ASCII_HYPH == c)
576: p->buf[p->col++] = '-';
577: else
578: p->buf[p->col++] = c;
579: p->buf[p->col++] = 8;
580: }
1.59 schwarze 581: p->buf[p->col++] = c;
582: }
1.20 schwarze 583:
584: static void
585: encode(struct termp *p, const char *word, size_t sz)
1.4 schwarze 586: {
1.71 schwarze 587: size_t i;
1.59 schwarze 588:
1.64 schwarze 589: if (TERMP_SKIPCHAR & p->flags) {
590: p->flags &= ~TERMP_SKIPCHAR;
591: return;
592: }
593:
1.20 schwarze 594: /*
595: * Encode and buffer a string of characters. If the current
596: * font mode is unset, buffer directly, else encode then buffer
597: * character by character.
598: */
599:
1.70 schwarze 600: if (TERMFONT_NONE == term_fonttop(p)) {
1.71 schwarze 601: if (p->col + sz >= p->maxcols)
602: adjbuf(p, p->col + sz);
603: for (i = 0; i < sz; i++)
1.59 schwarze 604: p->buf[p->col++] = word[i];
1.20 schwarze 605: return;
606: }
607:
1.46 schwarze 608: /* Pre-buffer, assuming worst-case. */
609:
1.71 schwarze 610: if (p->col + 1 + (sz * 5) >= p->maxcols)
611: adjbuf(p, p->col + 1 + (sz * 5));
1.46 schwarze 612:
1.71 schwarze 613: for (i = 0; i < sz; i++) {
1.70 schwarze 614: if (ASCII_HYPH == word[i] ||
615: isgraph((unsigned char)word[i]))
616: encode1(p, word[i]);
1.20 schwarze 617: else
1.59 schwarze 618: p->buf[p->col++] = word[i];
1.4 schwarze 619: }
1.80 ! schwarze 620: }
! 621:
! 622: void
! 623: term_setwidth(struct termp *p, const char *wstr)
! 624: {
! 625: struct roffsu su;
! 626: size_t width;
! 627: int iop;
! 628:
! 629: if (NULL != wstr) {
! 630: switch (*wstr) {
! 631: case ('+'):
! 632: iop = 1;
! 633: wstr++;
! 634: break;
! 635: case ('-'):
! 636: iop = -1;
! 637: wstr++;
! 638: break;
! 639: default:
! 640: iop = 0;
! 641: break;
! 642: }
! 643: if ( ! a2roffsu(wstr, &su, SCALE_MAX)) {
! 644: wstr = NULL;
! 645: iop = 0;
! 646: }
! 647: }
! 648: width = (NULL != wstr) ? term_hspan(p, &su) : 0;
! 649: (*p->setwidth)(p, iop, width);
1.4 schwarze 650: }
1.16 schwarze 651:
652: size_t
1.39 schwarze 653: term_len(const struct termp *p, size_t sz)
654: {
655:
656: return((*p->width)(p, ' ') * sz);
657: }
658:
1.64 schwarze 659: static size_t
660: cond_width(const struct termp *p, int c, int *skip)
661: {
662:
663: if (*skip) {
664: (*skip) = 0;
665: return(0);
666: } else
667: return((*p->width)(p, c));
668: }
1.39 schwarze 669:
670: size_t
671: term_strlen(const struct termp *p, const char *cp)
672: {
1.59 schwarze 673: size_t sz, rsz, i;
1.64 schwarze 674: int ssz, skip, c;
1.50 schwarze 675: const char *seq, *rhs;
1.59 schwarze 676: enum mandoc_esc esc;
1.77 schwarze 677: static const char rej[] = { '\\', ASCII_NBRSP, ASCII_HYPH,
678: ASCII_BREAK, '\0' };
1.59 schwarze 679:
680: /*
681: * Account for escaped sequences within string length
682: * calculations. This follows the logic in term_word() as we
683: * must calculate the width of produced strings.
684: */
685:
686: sz = 0;
1.64 schwarze 687: skip = 0;
1.59 schwarze 688: while ('\0' != *cp) {
689: rsz = strcspn(cp, rej);
690: for (i = 0; i < rsz; i++)
1.64 schwarze 691: sz += cond_width(p, *cp++, &skip);
1.59 schwarze 692:
693: switch (*cp) {
694: case ('\\'):
695: cp++;
696: esc = mandoc_escape(&cp, &seq, &ssz);
697: if (ESCAPE_ERROR == esc)
698: return(sz);
699:
700: if (TERMENC_ASCII != p->enc)
701: switch (esc) {
702: case (ESCAPE_UNICODE):
703: c = mchars_num2uc
704: (seq + 1, ssz - 1);
705: if ('\0' == c)
706: break;
1.64 schwarze 707: sz += cond_width(p, c, &skip);
1.59 schwarze 708: continue;
709: case (ESCAPE_SPECIAL):
710: c = mchars_spec2cp
711: (p->symtab, seq, ssz);
712: if (c <= 0)
713: break;
1.64 schwarze 714: sz += cond_width(p, c, &skip);
1.59 schwarze 715: continue;
716: default:
717: break;
718: }
719:
720: rhs = NULL;
1.50 schwarze 721:
1.59 schwarze 722: switch (esc) {
723: case (ESCAPE_UNICODE):
1.64 schwarze 724: sz += cond_width(p, '?', &skip);
1.59 schwarze 725: break;
726: case (ESCAPE_NUMBERED):
727: c = mchars_num2char(seq, ssz);
728: if ('\0' != c)
1.64 schwarze 729: sz += cond_width(p, c, &skip);
1.50 schwarze 730: break;
1.59 schwarze 731: case (ESCAPE_SPECIAL):
732: rhs = mchars_spec2str
1.50 schwarze 733: (p->symtab, seq, ssz, &rsz);
734:
1.59 schwarze 735: if (ssz != 1 || rhs)
1.50 schwarze 736: break;
737:
738: rhs = seq;
739: rsz = ssz;
740: break;
1.64 schwarze 741: case (ESCAPE_SKIPCHAR):
742: skip = 1;
743: break;
1.50 schwarze 744: default:
745: break;
746: }
1.39 schwarze 747:
1.59 schwarze 748: if (NULL == rhs)
749: break;
750:
1.64 schwarze 751: if (skip) {
752: skip = 0;
753: break;
754: }
755:
1.59 schwarze 756: for (i = 0; i < rsz; i++)
757: sz += (*p->width)(p, *rhs++);
758: break;
759: case (ASCII_NBRSP):
1.64 schwarze 760: sz += cond_width(p, ' ', &skip);
1.55 schwarze 761: cp++;
1.59 schwarze 762: break;
763: case (ASCII_HYPH):
1.64 schwarze 764: sz += cond_width(p, '-', &skip);
1.55 schwarze 765: cp++;
1.77 schwarze 766: /* FALLTHROUGH */
767: case (ASCII_BREAK):
1.59 schwarze 768: break;
769: default:
770: break;
771: }
772: }
1.39 schwarze 773:
774: return(sz);
775: }
776:
1.44 schwarze 777: /* ARGSUSED */
1.39 schwarze 778: size_t
779: term_vspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 780: {
781: double r;
782:
783: switch (su->unit) {
784: case (SCALE_CM):
785: r = su->scale * 2;
786: break;
787: case (SCALE_IN):
788: r = su->scale * 6;
789: break;
790: case (SCALE_PC):
791: r = su->scale;
792: break;
793: case (SCALE_PT):
794: r = su->scale / 8;
795: break;
796: case (SCALE_MM):
797: r = su->scale / 1000;
798: break;
799: case (SCALE_VS):
800: r = su->scale;
801: break;
802: default:
803: r = su->scale - 1;
804: break;
805: }
806:
807: if (r < 0.0)
808: r = 0.0;
809: return(/* LINTED */(size_t)
810: r);
811: }
812:
813: size_t
1.39 schwarze 814: term_hspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 815: {
1.44 schwarze 816: double v;
1.16 schwarze 817:
1.44 schwarze 818: v = ((*p->hspan)(p, su));
819: if (v < 0.0)
820: v = 0.0;
821: return((size_t) /* LINTED */
822: v);
1.16 schwarze 823: }
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