Annotation of mandoc/term.c, Revision 1.177
1.177 ! schwarze 1: /* $Id: term.c,v 1.176 2011/01/04 13:14:26 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"
1.101 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);
1.170 kristaps 86: exit((int)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 */
1.172 schwarze 137: size_t dv; /* temporary for visual pos calculations */
1.152 kristaps 138: int j; /* temporary loop index for p->buf */
139: int jhy; /* last hyph before overflow w/r/t j */
140: size_t maxvis; /* output position of visible boundary */
141: size_t mmax; /* used in calculating bp */
1.53 kristaps 142:
1.71 kristaps 143: /*
144: * First, establish the maximum columns of "visible" content.
145: * This is usually the difference between the right-margin and
146: * an indentation, but can be, for tagged lists or columns, a
1.115 kristaps 147: * small set of values.
1.71 kristaps 148: */
1.175 kristaps 149: assert (p->rmargin >= p->offset);
1.174 schwarze 150: dv = p->rmargin - p->offset;
151: maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
152: dv = p->maxrmargin - p->offset;
153: mmax = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
1.92 kristaps 154:
1.71 kristaps 155: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.115 kristaps 156:
1.136 schwarze 157: /*
158: * Indent the first line of a paragraph.
159: */
1.174 schwarze 160: vbl = p->flags & TERMP_NOLPAD ? (size_t)0 : p->offset;
1.136 schwarze 161:
1.174 schwarze 162: vis = vend = 0;
163: i = 0;
1.115 kristaps 164:
1.136 schwarze 165: while (i < (int)p->col) {
1.71 kristaps 166: /*
1.154 kristaps 167: * Handle literal tab characters: collapse all
168: * subsequent tabs into a single huge set of spaces.
1.138 schwarze 169: */
1.169 schwarze 170: while (i < (int)p->col && '\t' == p->buf[i]) {
1.154 kristaps 171: vend = (vis / p->tabwidth + 1) * p->tabwidth;
1.138 schwarze 172: vbl += vend - vis;
173: vis = vend;
1.169 schwarze 174: i++;
1.138 schwarze 175: }
176:
177: /*
1.71 kristaps 178: * Count up visible word characters. Control sequences
179: * (starting with the CSI) aren't counted. A space
180: * generates a non-printing word, which is valid (the
181: * space is printed according to regular spacing rules).
182: */
183:
1.169 schwarze 184: for (j = i, jhy = 0; j < (int)p->col; j++) {
1.138 schwarze 185: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.71 kristaps 186: break;
1.154 kristaps 187:
188: /* Back over the the last printed character. */
189: if (8 == p->buf[j]) {
1.153 kristaps 190: assert(j);
191: vend -= (*p->width)(p, p->buf[j - 1]);
1.154 kristaps 192: continue;
1.153 kristaps 193: }
1.154 kristaps 194:
195: /* Regular word. */
196: /* Break at the hyphen point if we overrun. */
197: if (vend > vis && vend < bp &&
198: ASCII_HYPH == p->buf[j])
199: jhy = j;
200:
201: vend += (*p->width)(p, p->buf[j]);
1.71 kristaps 202: }
1.53 kristaps 203:
1.71 kristaps 204: /*
1.81 kristaps 205: * Find out whether we would exceed the right margin.
1.136 schwarze 206: * If so, break to the next line.
1.81 kristaps 207: */
1.140 kristaps 208: if (vend > bp && 0 == jhy && vis > 0) {
1.136 schwarze 209: vend -= vis;
1.146 kristaps 210: (*p->endline)(p);
1.81 kristaps 211: if (TERMP_NOBREAK & p->flags) {
1.139 schwarze 212: p->viscol = p->rmargin;
1.146 kristaps 213: (*p->advance)(p, p->rmargin);
1.136 schwarze 214: vend += p->rmargin - p->offset;
1.81 kristaps 215: } else {
1.139 schwarze 216: p->viscol = 0;
1.136 schwarze 217: vbl = p->offset;
1.81 kristaps 218: }
1.130 kristaps 219:
1.129 kristaps 220: /* Remove the p->overstep width. */
1.130 kristaps 221:
1.174 schwarze 222: bp += (size_t)p->overstep;
1.129 kristaps 223: p->overstep = 0;
1.71 kristaps 224: }
1.138 schwarze 225:
1.130 kristaps 226: /* Write out the [remaining] word. */
1.136 schwarze 227: for ( ; i < (int)p->col; i++) {
1.140 kristaps 228: if (vend > bp && jhy > 0 && i > jhy)
229: break;
1.138 schwarze 230: if ('\t' == p->buf[i])
231: break;
1.136 schwarze 232: if (' ' == p->buf[i]) {
1.164 kristaps 233: j = i;
234: while (' ' == p->buf[i])
1.136 schwarze 235: i++;
1.174 schwarze 236: dv = (size_t)(i - j) * (*p->width)(p, ' ');
1.172 schwarze 237: vbl += dv;
238: vend += dv;
1.71 kristaps 239: break;
1.136 schwarze 240: }
241: if (ASCII_NBRSP == p->buf[i]) {
1.153 kristaps 242: vbl += (*p->width)(p, ' ');
1.136 schwarze 243: continue;
244: }
1.130 kristaps 245:
1.136 schwarze 246: /*
247: * Now we definitely know there will be
248: * printable characters to output,
249: * so write preceding white space now.
250: */
251: if (vbl) {
1.146 kristaps 252: (*p->advance)(p, vbl);
1.139 schwarze 253: p->viscol += vbl;
1.136 schwarze 254: vbl = 0;
255: }
1.140 kristaps 256:
1.153 kristaps 257: if (ASCII_HYPH == p->buf[i]) {
1.146 kristaps 258: (*p->letter)(p, '-');
1.153 kristaps 259: p->viscol += (*p->width)(p, '-');
260: } else {
1.146 kristaps 261: (*p->letter)(p, p->buf[i]);
1.153 kristaps 262: p->viscol += (*p->width)(p, p->buf[i]);
263: }
1.136 schwarze 264: }
265: vis = vend;
1.71 kristaps 266: }
1.168 schwarze 267:
268: /*
269: * If there was trailing white space, it was not printed;
270: * so reset the cursor position accordingly.
271: */
272: vis -= vbl;
1.111 kristaps 273:
1.91 kristaps 274: p->col = 0;
1.129 kristaps 275: p->overstep = 0;
1.15 kristaps 276:
1.91 kristaps 277: if ( ! (TERMP_NOBREAK & p->flags)) {
1.139 schwarze 278: p->viscol = 0;
1.146 kristaps 279: (*p->endline)(p);
1.15 kristaps 280: return;
1.71 kristaps 281: }
1.15 kristaps 282:
1.91 kristaps 283: if (TERMP_HANG & p->flags) {
284: /* We need one blank after the tag. */
1.174 schwarze 285: p->overstep = (int)(vis - maxvis + (*p->width)(p, ' '));
1.91 kristaps 286:
287: /*
288: * Behave exactly the same way as groff:
1.92 kristaps 289: * If we have overstepped the margin, temporarily move
290: * it to the right and flag the rest of the line to be
291: * shorter.
1.91 kristaps 292: * If we landed right at the margin, be happy.
1.92 kristaps 293: * If we are one step before the margin, temporarily
294: * move it one step LEFT and flag the rest of the line
295: * to be longer.
1.91 kristaps 296: */
1.129 kristaps 297: if (p->overstep >= -1) {
298: assert((int)maxvis + p->overstep >= 0);
1.174 schwarze 299: maxvis += (size_t)p->overstep;
1.92 kristaps 300: } else
1.129 kristaps 301: p->overstep = 0;
1.91 kristaps 302:
303: } else if (TERMP_DANGLE & p->flags)
304: return;
1.15 kristaps 305:
1.92 kristaps 306: /* Right-pad. */
1.174 schwarze 307: if (maxvis > vis +
308: ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
1.139 schwarze 309: p->viscol += maxvis - vis;
1.146 kristaps 310: (*p->advance)(p, maxvis - vis);
1.142 kristaps 311: vis += (maxvis - vis);
1.139 schwarze 312: } else { /* ...or newline break. */
1.146 kristaps 313: (*p->endline)(p);
1.139 schwarze 314: p->viscol = p->rmargin;
1.146 kristaps 315: (*p->advance)(p, p->rmargin);
1.91 kristaps 316: }
1.15 kristaps 317: }
318:
319:
1.71 kristaps 320: /*
321: * A newline only breaks an existing line; it won't assert vertical
322: * space. All data in the output buffer is flushed prior to the newline
323: * assertion.
324: */
325: void
326: term_newln(struct termp *p)
1.15 kristaps 327: {
328:
1.71 kristaps 329: p->flags |= TERMP_NOSPACE;
1.139 schwarze 330: if (0 == p->col && 0 == p->viscol) {
1.71 kristaps 331: p->flags &= ~TERMP_NOLPAD;
1.15 kristaps 332: return;
1.16 kristaps 333: }
1.71 kristaps 334: term_flushln(p);
335: p->flags &= ~TERMP_NOLPAD;
1.16 kristaps 336: }
337:
338:
1.71 kristaps 339: /*
340: * Asserts a vertical space (a full, empty line-break between lines).
341: * Note that if used twice, this will cause two blank spaces and so on.
342: * All data in the output buffer is flushed prior to the newline
343: * assertion.
344: */
345: void
346: term_vspace(struct termp *p)
1.16 kristaps 347: {
348:
1.62 kristaps 349: term_newln(p);
1.139 schwarze 350: p->viscol = 0;
1.146 kristaps 351: (*p->endline)(p);
1.16 kristaps 352: }
353:
354:
1.71 kristaps 355: static void
1.177 ! schwarze 356: numbered(struct termp *p, const char *word, size_t len)
! 357: {
! 358: const char *rhs;
! 359:
! 360: rhs = chars_num2char(word, len);
! 361: if (rhs)
! 362: encode(p, rhs, 1);
! 363: }
! 364:
! 365:
! 366: static void
1.163 kristaps 367: spec(struct termp *p, enum roffdeco d, const char *word, size_t len)
1.17 kristaps 368: {
1.71 kristaps 369: const char *rhs;
370: size_t sz;
1.17 kristaps 371:
1.161 kristaps 372: rhs = chars_spec2str(p->symtab, word, len, &sz);
1.125 kristaps 373: if (rhs)
374: encode(p, rhs, sz);
1.163 kristaps 375: else if (DECO_SSPECIAL == d)
376: encode(p, word, len);
1.94 kristaps 377: }
378:
379:
380: static void
1.125 kristaps 381: res(struct termp *p, const char *word, size_t len)
1.94 kristaps 382: {
383: const char *rhs;
384: size_t sz;
385:
1.161 kristaps 386: rhs = chars_res2str(p->symtab, word, len, &sz);
1.125 kristaps 387: if (rhs)
388: encode(p, rhs, sz);
389: }
390:
391:
392: void
393: term_fontlast(struct termp *p)
394: {
395: enum termfont f;
396:
397: f = p->fontl;
398: p->fontl = p->fontq[p->fonti];
399: p->fontq[p->fonti] = f;
400: }
401:
402:
403: void
404: term_fontrepl(struct termp *p, enum termfont f)
405: {
406:
407: p->fontl = p->fontq[p->fonti];
408: p->fontq[p->fonti] = f;
409: }
410:
411:
412: void
413: term_fontpush(struct termp *p, enum termfont f)
414: {
415:
416: assert(p->fonti + 1 < 10);
417: p->fontl = p->fontq[p->fonti];
418: p->fontq[++p->fonti] = f;
419: }
420:
421:
422: const void *
423: term_fontq(struct termp *p)
424: {
425:
426: return(&p->fontq[p->fonti]);
427: }
428:
429:
430: enum termfont
431: term_fonttop(struct termp *p)
432: {
433:
434: return(p->fontq[p->fonti]);
435: }
436:
437:
438: void
439: term_fontpopq(struct termp *p, const void *key)
440: {
441:
442: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
443: p->fonti--;
444: assert(p->fonti >= 0);
445: }
1.94 kristaps 446:
1.125 kristaps 447:
448: void
449: term_fontpop(struct termp *p)
450: {
451:
452: assert(p->fonti);
453: p->fonti--;
1.17 kristaps 454: }
455:
456:
1.71 kristaps 457: /*
458: * Handle pwords, partial words, which may be either a single word or a
459: * phrase that cannot be broken down (such as a literal string). This
460: * handles word styling.
461: */
1.86 kristaps 462: void
463: term_word(struct termp *p, const char *word)
1.65 kristaps 464: {
1.124 kristaps 465: const char *sv, *seq;
466: size_t ssz;
467: enum roffdeco deco;
1.71 kristaps 468:
1.100 kristaps 469: sv = word;
470:
1.123 kristaps 471: if (word[0] && '\0' == word[1])
1.100 kristaps 472: switch (word[0]) {
473: case('.'):
474: /* FALLTHROUGH */
475: case(','):
476: /* FALLTHROUGH */
477: case(';'):
478: /* FALLTHROUGH */
479: case(':'):
480: /* FALLTHROUGH */
481: case('?'):
482: /* FALLTHROUGH */
483: case('!'):
484: /* FALLTHROUGH */
485: case(')'):
486: /* FALLTHROUGH */
487: case(']'):
488: if ( ! (TERMP_IGNDELIM & p->flags))
489: p->flags |= TERMP_NOSPACE;
490: break;
491: default:
492: break;
493: }
1.65 kristaps 494:
1.133 kristaps 495: if ( ! (TERMP_NOSPACE & p->flags)) {
1.151 schwarze 496: if ( ! (TERMP_KEEP & p->flags)) {
497: if (TERMP_PREKEEP & p->flags)
498: p->flags |= TERMP_KEEP;
1.133 kristaps 499: bufferc(p, ' ');
1.151 schwarze 500: if (TERMP_SENTENCE & p->flags)
501: bufferc(p, ' ');
502: } else
503: bufferc(p, ASCII_NBRSP);
1.133 kristaps 504: }
1.65 kristaps 505:
1.71 kristaps 506: if ( ! (p->flags & TERMP_NONOSPACE))
507: p->flags &= ~TERMP_NOSPACE;
1.166 kristaps 508: else
509: p->flags |= TERMP_NOSPACE;
1.133 kristaps 510:
1.173 schwarze 511: p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
1.65 kristaps 512:
1.162 kristaps 513: while (*word) {
514: if ((ssz = strcspn(word, "\\")) > 0)
515: encode(p, word, ssz);
1.124 kristaps 516:
1.162 kristaps 517: word += ssz;
518: if ('\\' != *word)
1.124 kristaps 519: continue;
520:
521: seq = ++word;
1.171 kristaps 522: word += a2roffdeco(&deco, &seq, &ssz);
1.124 kristaps 523:
524: switch (deco) {
1.177 ! schwarze 525: case (DECO_NUMBERED):
! 526: numbered(p, seq, ssz);
! 527: break;
1.124 kristaps 528: case (DECO_RESERVED):
1.125 kristaps 529: res(p, seq, ssz);
1.124 kristaps 530: break;
531: case (DECO_SPECIAL):
1.163 kristaps 532: /* FALLTHROUGH */
533: case (DECO_SSPECIAL):
534: spec(p, deco, seq, ssz);
1.124 kristaps 535: break;
536: case (DECO_BOLD):
1.125 kristaps 537: term_fontrepl(p, TERMFONT_BOLD);
1.124 kristaps 538: break;
539: case (DECO_ITALIC):
1.125 kristaps 540: term_fontrepl(p, TERMFONT_UNDER);
1.124 kristaps 541: break;
542: case (DECO_ROMAN):
1.125 kristaps 543: term_fontrepl(p, TERMFONT_NONE);
1.124 kristaps 544: break;
545: case (DECO_PREVIOUS):
1.125 kristaps 546: term_fontlast(p);
1.124 kristaps 547: break;
548: default:
549: break;
550: }
1.127 kristaps 551:
552: if (DECO_NOSPACE == deco && '\0' == *word)
553: p->flags |= TERMP_NOSPACE;
1.124 kristaps 554: }
1.65 kristaps 555:
1.131 kristaps 556: /*
557: * Note that we don't process the pipe: the parser sees it as
558: * punctuation, but we don't in terms of typography.
559: */
1.162 kristaps 560: if (sv[0] && '\0' == sv[1])
1.100 kristaps 561: switch (sv[0]) {
562: case('('):
563: /* FALLTHROUGH */
564: case('['):
565: p->flags |= TERMP_NOSPACE;
566: break;
567: default:
568: break;
569: }
1.65 kristaps 570: }
571:
572:
1.71 kristaps 573: static void
1.125 kristaps 574: adjbuf(struct termp *p, size_t sz)
1.51 kristaps 575: {
576:
1.125 kristaps 577: if (0 == p->maxcols)
578: p->maxcols = 1024;
579: while (sz >= p->maxcols)
580: p->maxcols <<= 2;
581:
582: p->buf = realloc(p->buf, p->maxcols);
583: if (NULL == p->buf) {
584: perror(NULL);
1.170 kristaps 585: exit((int)MANDOCLEVEL_SYSERR);
1.71 kristaps 586: }
1.51 kristaps 587: }
588:
1.79 kristaps 589:
590: static void
1.125 kristaps 591: bufferc(struct termp *p, char c)
592: {
593:
594: if (p->col + 1 >= p->maxcols)
595: adjbuf(p, p->col + 1);
596:
1.126 kristaps 597: p->buf[(int)p->col++] = c;
1.125 kristaps 598: }
599:
600:
601: static void
602: encode(struct termp *p, const char *word, size_t sz)
603: {
604: enum termfont f;
605: int i;
606:
607: /*
608: * Encode and buffer a string of characters. If the current
609: * font mode is unset, buffer directly, else encode then buffer
610: * character by character.
611: */
612:
1.147 kristaps 613: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.165 kristaps 614: if (p->col + sz >= p->maxcols)
615: adjbuf(p, p->col + sz);
616: memcpy(&p->buf[(int)p->col], word, sz);
617: p->col += sz;
1.125 kristaps 618: return;
619: }
620:
1.165 kristaps 621: /* Pre-buffer, assuming worst-case. */
622:
623: if (p->col + 1 + (sz * 3) >= p->maxcols)
624: adjbuf(p, p->col + 1 + (sz * 3));
625:
1.125 kristaps 626: for (i = 0; i < (int)sz; i++) {
627: if ( ! isgraph((u_char)word[i])) {
1.165 kristaps 628: p->buf[(int)p->col++] = word[i];
1.125 kristaps 629: continue;
1.79 kristaps 630: }
1.125 kristaps 631:
632: if (TERMFONT_UNDER == f)
1.165 kristaps 633: p->buf[(int)p->col++] = '_';
1.125 kristaps 634: else
1.165 kristaps 635: p->buf[(int)p->col++] = word[i];
1.125 kristaps 636:
1.165 kristaps 637: p->buf[(int)p->col++] = 8;
638: p->buf[(int)p->col++] = word[i];
1.79 kristaps 639: }
640: }
1.106 kristaps 641:
642:
1.107 kristaps 643: size_t
1.149 kristaps 644: term_len(const struct termp *p, size_t sz)
645: {
646:
647: return((*p->width)(p, ' ') * sz);
648: }
649:
650:
651: size_t
652: term_strlen(const struct termp *p, const char *cp)
653: {
1.171 kristaps 654: size_t sz, ssz, rsz, i;
655: enum roffdeco d;
656: const char *seq, *rhs;
657:
658: for (sz = 0; '\0' != *cp; )
659: /*
660: * Account for escaped sequences within string length
661: * calculations. This follows the logic in term_word()
662: * as we must calculate the width of produced strings.
663: */
664: if ('\\' == *cp) {
665: seq = ++cp;
666: cp += a2roffdeco(&d, &seq, &ssz);
667:
668: switch (d) {
669: case (DECO_RESERVED):
670: rhs = chars_res2str
671: (p->symtab, seq, ssz, &rsz);
672: break;
673: case (DECO_SPECIAL):
674: /* FALLTHROUGH */
675: case (DECO_SSPECIAL):
676: rhs = chars_spec2str
677: (p->symtab, seq, ssz, &rsz);
678:
679: /* Allow for one-char escapes. */
680: if (DECO_SSPECIAL != d || rhs)
681: break;
682:
683: rhs = seq;
684: rsz = ssz;
685: break;
686: default:
687: rhs = NULL;
688: break;
689: }
1.149 kristaps 690:
1.171 kristaps 691: if (rhs)
692: for (i = 0; i < rsz; i++)
693: sz += (*p->width)(p, *rhs++);
1.176 kristaps 694: } else if (ASCII_NBRSP == *cp) {
695: sz += (*p->width)(p, ' ');
696: cp++;
697: } else if (ASCII_HYPH == *cp) {
698: sz += (*p->width)(p, '-');
699: cp++;
1.171 kristaps 700: } else
701: sz += (*p->width)(p, *cp++);
1.149 kristaps 702:
703: return(sz);
704: }
705:
706:
1.157 kristaps 707: /* ARGSUSED */
1.149 kristaps 708: size_t
709: term_vspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 710: {
711: double r;
712:
1.107 kristaps 713: switch (su->unit) {
1.106 kristaps 714: case (SCALE_CM):
1.107 kristaps 715: r = su->scale * 2;
1.106 kristaps 716: break;
717: case (SCALE_IN):
1.107 kristaps 718: r = su->scale * 6;
1.106 kristaps 719: break;
720: case (SCALE_PC):
1.107 kristaps 721: r = su->scale;
1.106 kristaps 722: break;
723: case (SCALE_PT):
1.107 kristaps 724: r = su->scale / 8;
1.106 kristaps 725: break;
726: case (SCALE_MM):
1.107 kristaps 727: r = su->scale / 1000;
1.106 kristaps 728: break;
729: case (SCALE_VS):
1.107 kristaps 730: r = su->scale;
1.106 kristaps 731: break;
732: default:
1.107 kristaps 733: r = su->scale - 1;
1.106 kristaps 734: break;
735: }
736:
737: if (r < 0.0)
738: r = 0.0;
1.107 kristaps 739: return(/* LINTED */(size_t)
1.106 kristaps 740: r);
741: }
742:
743:
1.107 kristaps 744: size_t
1.149 kristaps 745: term_hspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 746: {
1.156 kristaps 747: double v;
1.108 kristaps 748:
1.156 kristaps 749: v = ((*p->hspan)(p, su));
750: if (v < 0.0)
751: v = 0.0;
752: return((size_t) /* LINTED */
753: v);
1.106 kristaps 754: }
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