Annotation of mandoc/term.c, Revision 1.292
1.292 ! schwarze 1: /* $Id: term.c,v 1.291 2023/04/28 19:11:04 schwarze Exp $ */
1.1 kristaps 2: /*
1.292 ! schwarze 3: * Copyright (c) 2010-2022, 2025 Ingo Schwarze <schwarze@openbsd.org>
1.198 schwarze 4: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
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: *
1.246 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.74 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.246 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.74 kristaps 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: #include "config.h"
19:
1.126 kristaps 20: #include <sys/types.h>
21:
1.1 kristaps 22: #include <assert.h>
1.122 kristaps 23: #include <ctype.h>
1.278 schwarze 24: #include <stdint.h>
1.22 kristaps 25: #include <stdio.h>
1.1 kristaps 26: #include <stdlib.h>
27: #include <string.h>
28:
1.137 kristaps 29: #include "mandoc.h"
1.218 schwarze 30: #include "mandoc_aux.h"
1.107 kristaps 31: #include "out.h"
1.71 kristaps 32: #include "term.h"
1.105 kristaps 33: #include "main.h"
1.1 kristaps 34:
1.203 schwarze 35: static size_t cond_width(const struct termp *, int, int *);
1.266 schwarze 36: static void adjbuf(struct termp_col *, size_t);
1.191 kristaps 37: static void bufferc(struct termp *, char);
38: static void encode(struct termp *, const char *, size_t);
1.194 kristaps 39: static void encode1(struct termp *, int);
1.264 schwarze 40: static void endline(struct termp *);
1.282 schwarze 41: static void term_field(struct termp *, size_t, size_t);
1.278 schwarze 42: static void term_fill(struct termp *, size_t *, size_t *,
43: size_t);
1.11 kristaps 44:
1.222 schwarze 45:
1.145 kristaps 46: void
1.269 schwarze 47: term_setcol(struct termp *p, size_t maxtcol)
48: {
49: if (maxtcol > p->maxtcol) {
50: p->tcols = mandoc_recallocarray(p->tcols,
51: p->maxtcol, maxtcol, sizeof(*p->tcols));
52: p->maxtcol = maxtcol;
53: }
54: p->lasttcol = maxtcol - 1;
55: p->tcol = p->tcols;
56: }
57:
58: void
1.71 kristaps 59: term_free(struct termp *p)
1.14 kristaps 60: {
1.284 schwarze 61: term_tab_free();
1.266 schwarze 62: for (p->tcol = p->tcols; p->tcol < p->tcols + p->maxtcol; p->tcol++)
63: free(p->tcol->buf);
64: free(p->tcols);
1.238 schwarze 65: free(p->fontq);
1.142 kristaps 66: free(p);
67: }
68:
69: void
1.222 schwarze 70: term_begin(struct termp *p, term_margin head,
1.246 schwarze 71: term_margin foot, const struct roff_meta *arg)
1.142 kristaps 72: {
73:
74: p->headf = head;
75: p->footf = foot;
76: p->argf = arg;
1.146 kristaps 77: (*p->begin)(p);
1.142 kristaps 78: }
79:
80: void
81: term_end(struct termp *p)
82: {
83:
1.146 kristaps 84: (*p->end)(p);
1.14 kristaps 85: }
86:
1.71 kristaps 87: /*
1.221 schwarze 88: * Flush a chunk of text. By default, break the output line each time
89: * the right margin is reached, and continue output on the next line
90: * at the same offset as the chunk itself. By default, also break the
1.278 schwarze 91: * output line at the end of the chunk. There are many flags modifying
92: * this behaviour, see the comments in the body of the function.
1.71 kristaps 93: */
94: void
95: term_flushln(struct termp *p)
1.53 kristaps 96: {
1.292 ! schwarze 97: /* Widths in basic units. */
! 98: size_t vbl; /* Whitespace to prepend to the output. */
1.278 schwarze 99: size_t vbr; /* Actual visual position of the end of field. */
100: size_t vfield; /* Desired visual field width. */
101: size_t vtarget; /* Desired visual position of the right margin. */
1.292 ! schwarze 102:
! 103: /* Bytes. */
! 104: size_t ic; /* Byte index in the input buffer. */
! 105: size_t nbr; /* Number of bytes to print in this field. */
1.278 schwarze 106:
107: /*
108: * Normally, start writing at the left margin, but with the
109: * NOPAD flag, start writing at the current position instead.
110: */
1.53 kristaps 111:
1.266 schwarze 112: vbl = (p->flags & TERMP_NOPAD) || p->tcol->offset < p->viscol ?
113: 0 : p->tcol->offset - p->viscol;
1.292 ! schwarze 114: if (p->minbl > 0 && vbl < term_len(p, p->minbl))
! 115: vbl = term_len(p, p->minbl);
1.115 kristaps 116:
1.274 schwarze 117: if ((p->flags & TERMP_MULTICOL) == 0)
1.267 schwarze 118: p->tcol->col = 0;
1.278 schwarze 119:
120: /* Loop over output lines. */
121:
122: for (;;) {
123: vfield = p->tcol->rmargin > p->viscol + vbl ?
124: p->tcol->rmargin - p->viscol - vbl : 0;
1.267 schwarze 125:
1.71 kristaps 126: /*
1.278 schwarze 127: * Normally, break the line at the the right margin
128: * of the field, but with the NOBREAK flag, only
129: * break it at the max right margin of the screen,
130: * and with the BRNEVER flag, never break it at all.
1.138 schwarze 131: */
1.267 schwarze 132:
1.282 schwarze 133: vtarget = (p->flags & TERMP_NOBREAK) == 0 ? vfield :
1.278 schwarze 134: p->maxrmargin > p->viscol + vbl ?
135: p->maxrmargin - p->viscol - vbl : 0;
136:
137: /*
138: * Figure out how much text will fit in the field.
139: * If there is whitespace only, print nothing.
140: */
141:
1.282 schwarze 142: term_fill(p, &nbr, &vbr,
1.292 ! schwarze 143: p->flags & TERMP_BRNEVER ? SIZE_MAX / 2 : vtarget);
1.278 schwarze 144: if (nbr == 0)
145: break;
1.279 schwarze 146:
147: /*
148: * With the CENTER or RIGHT flag, increase the indentation
149: * to center the text between the left and right margins
150: * or to adjust it to the right margin, respectively.
151: */
152:
153: if (vbr < vtarget) {
154: if (p->flags & TERMP_CENTER)
155: vbl += (vtarget - vbr) / 2;
156: else if (p->flags & TERMP_RIGHT)
157: vbl += vtarget - vbr;
158: }
159:
160: /* Finally, print the field content. */
1.278 schwarze 161:
1.282 schwarze 162: term_field(p, vbl, nbr);
1.290 schwarze 163: if (vbr < vtarget)
164: p->tcol->taboff += vbr;
165: else
166: p->tcol->taboff += vtarget;
1.292 ! schwarze 167: p->tcol->taboff += term_len(p, 1);
1.138 schwarze 168:
169: /*
1.278 schwarze 170: * If there is no text left in the field, exit the loop.
171: * If the BRTRSP flag is set, consider trailing
172: * whitespace significant when deciding whether
173: * the field fits or not.
1.71 kristaps 174: */
175:
1.278 schwarze 176: for (ic = p->tcol->col; ic < p->tcol->lastcol; ic++) {
177: switch (p->tcol->buf[ic]) {
178: case '\t':
179: if (p->flags & TERMP_BRTRSP)
180: vbr = term_tab_next(vbr);
181: continue;
182: case ' ':
183: if (p->flags & TERMP_BRTRSP)
1.292 ! schwarze 184: vbr += term_len(p, 1);
1.270 schwarze 185: continue;
1.278 schwarze 186: case '\n':
1.290 schwarze 187: case ASCII_NBRZW:
1.278 schwarze 188: case ASCII_BREAK:
1.290 schwarze 189: case ASCII_TABREF:
1.278 schwarze 190: continue;
191: default:
192: break;
1.270 schwarze 193: }
1.278 schwarze 194: break;
195: }
196: if (ic == p->tcol->lastcol)
197: break;
1.154 kristaps 198:
1.278 schwarze 199: /*
1.291 schwarze 200: * At the location of an automatic line break, input
1.278 schwarze 201: * space characters are consumed by the line break.
202: */
1.154 kristaps 203:
1.278 schwarze 204: while (p->tcol->col < p->tcol->lastcol &&
205: p->tcol->buf[p->tcol->col] == ' ')
206: p->tcol->col++;
1.154 kristaps 207:
1.278 schwarze 208: /*
209: * In multi-column mode, leave the rest of the text
210: * in the buffer to be handled by a subsequent
211: * invocation, such that the other columns of the
212: * table can be handled first.
213: * In single-column mode, simply break the line.
214: */
215:
216: if (p->flags & TERMP_MULTICOL)
217: return;
1.217 schwarze 218:
1.278 schwarze 219: endline(p);
1.53 kristaps 220:
1.71 kristaps 221: /*
1.278 schwarze 222: * Normally, start the next line at the same indentation
223: * as this one, but with the BRIND flag, start it at the
224: * right margin instead. This is used together with
225: * NOBREAK for the tags in various kinds of tagged lists.
1.81 kristaps 226: */
1.267 schwarze 227:
1.278 schwarze 228: vbl = p->flags & TERMP_BRIND ?
229: p->tcol->rmargin : p->tcol->offset;
230: }
1.267 schwarze 231:
1.278 schwarze 232: /* Reset output state in preparation for the next field. */
1.205 schwarze 233:
1.278 schwarze 234: p->col = p->tcol->col = p->tcol->lastcol = 0;
235: p->minbl = p->trailspace;
236: p->flags &= ~(TERMP_BACKAFTER | TERMP_BACKBEFORE | TERMP_NOPAD);
1.260 schwarze 237:
1.278 schwarze 238: if (p->flags & TERMP_MULTICOL)
239: return;
1.260 schwarze 240:
1.278 schwarze 241: /*
242: * The HANG flag means that the next field
243: * always follows on the same line.
244: * The NOBREAK flag means that the next field
245: * follows on the same line unless the field was overrun.
246: * Normally, break the line at the end of each field.
247: */
1.205 schwarze 248:
1.278 schwarze 249: if ((p->flags & TERMP_HANG) == 0 &&
250: ((p->flags & TERMP_NOBREAK) == 0 ||
1.292 ! schwarze 251: vbr + term_len(p, p->trailspace) > vfield + term_len(p, 1) / 2))
1.278 schwarze 252: endline(p);
253: }
1.138 schwarze 254:
1.278 schwarze 255: /*
1.292 ! schwarze 256: * Store the number of input bytes to print in this field in *nbr
! 257: * and their total visual width in basic units in *vbr.
1.278 schwarze 258: * If there is only whitespace in the field, both remain zero.
259: * The desired visual width of the field is provided by vtarget.
260: * If the first word is longer, the field will be overrun.
261: */
262: static void
263: term_fill(struct termp *p, size_t *nbr, size_t *vbr, size_t vtarget)
264: {
1.292 ! schwarze 265: /* Widths in basic units. */
1.278 schwarze 266: size_t vis; /* Visual position of the current character. */
267: size_t vn; /* Visual position of the next character. */
1.292 ! schwarze 268: size_t enw; /* Width of an EN unit. */
! 269: int taboff; /* Temporary offset for literal tabs. */
! 270:
! 271: size_t ic; /* Byte index in the input buffer. */
1.278 schwarze 272: int breakline; /* Break at the end of this word. */
273: int graph; /* Last character was non-blank. */
274:
275: *nbr = *vbr = vis = 0;
276: breakline = graph = 0;
1.290 schwarze 277: taboff = p->tcol->taboff;
1.292 ! schwarze 278: enw = (*p->getwidth)(p, ' ');
! 279: vtarget += enw / 2;
1.278 schwarze 280: for (ic = p->tcol->col; ic < p->tcol->lastcol; ic++) {
281: switch (p->tcol->buf[ic]) {
282: case '\b': /* Escape \o (overstrike) or backspace markup. */
283: assert(ic > 0);
1.292 ! schwarze 284: vis -= (*p->getwidth)(p, p->tcol->buf[ic - 1]);
1.278 schwarze 285: continue;
1.267 schwarze 286:
1.278 schwarze 287: case ' ':
288: case ASCII_BREAK: /* Escape \: (breakpoint). */
1.287 schwarze 289: vn = vis;
290: if (p->tcol->buf[ic] == ' ')
1.292 ! schwarze 291: vn += enw;
1.278 schwarze 292: /* Can break at the end of a word. */
293: if (breakline || vn > vtarget)
294: break;
295: if (graph) {
296: *nbr = ic;
297: *vbr = vis;
298: graph = 0;
1.136 schwarze 299: }
1.278 schwarze 300: vis = vn;
301: continue;
302:
303: case '\n': /* Escape \p (break at the end of the word). */
304: breakline = 1;
305: continue;
1.130 kristaps 306:
1.278 schwarze 307: case ASCII_HYPH: /* Breakable hyphen. */
308: graph = 1;
1.136 schwarze 309: /*
1.278 schwarze 310: * We are about to decide whether to break the
311: * line or not, so we no longer need this hyphen
312: * to be marked as breakable. Put back a real
313: * hyphen such that we get the correct width.
1.136 schwarze 314: */
1.278 schwarze 315: p->tcol->buf[ic] = '-';
1.292 ! schwarze 316: vis += (*p->getwidth)(p, '-');
1.278 schwarze 317: if (vis > vtarget) {
318: ic++;
319: break;
1.200 schwarze 320: }
1.278 schwarze 321: *nbr = ic + 1;
322: *vbr = vis;
323: continue;
1.200 schwarze 324:
1.290 schwarze 325: case ASCII_TABREF:
1.292 ! schwarze 326: taboff = -vis - enw;
1.290 schwarze 327: continue;
328:
1.287 schwarze 329: default:
330: switch (p->tcol->buf[ic]) {
331: case '\t':
1.290 schwarze 332: if (taboff < 0 && (size_t)-taboff > vis)
333: vis = 0;
334: else
335: vis += taboff;
1.287 schwarze 336: vis = term_tab_next(vis);
1.290 schwarze 337: vis -= taboff;
1.287 schwarze 338: break;
1.289 schwarze 339: case ASCII_NBRZW: /* Non-breakable zero-width. */
340: break;
1.287 schwarze 341: case ASCII_NBRSP: /* Non-breakable space. */
342: p->tcol->buf[ic] = ' ';
343: /* FALLTHROUGH */
344: default: /* Printable character. */
1.292 ! schwarze 345: vis += (*p->getwidth)(p, p->tcol->buf[ic]);
1.287 schwarze 346: break;
347: }
1.278 schwarze 348: graph = 1;
349: if (vis > vtarget && *nbr > 0)
350: return;
351: continue;
1.136 schwarze 352: }
1.278 schwarze 353: break;
354: }
1.270 schwarze 355:
1.278 schwarze 356: /*
357: * If the last word extends to the end of the field without any
358: * trailing whitespace, the loop could not check yet whether it
359: * can remain on this line. So do the check now.
360: */
1.270 schwarze 361:
1.278 schwarze 362: if (graph && (vis <= vtarget || *nbr == 0)) {
363: *nbr = ic;
364: *vbr = vis;
365: }
366: }
1.270 schwarze 367:
1.278 schwarze 368: /*
369: * Print the contents of one field
1.292 ! schwarze 370: * with an indentation of vbl basic units
! 371: * and an input string length of nbr bytes.
1.278 schwarze 372: */
373: static void
1.282 schwarze 374: term_field(struct termp *p, size_t vbl, size_t nbr)
1.278 schwarze 375: {
1.292 ! schwarze 376: /* Widths in basic units. */
1.278 schwarze 377: size_t vis; /* Visual position of the current character. */
1.288 schwarze 378: size_t vt; /* Visual position including tab offset. */
1.278 schwarze 379: size_t dv; /* Visual width of the current character. */
1.290 schwarze 380: int taboff; /* Temporary offset for literal tabs. */
1.270 schwarze 381:
1.292 ! schwarze 382: size_t ic; /* Byte position in the input buffer. */
! 383:
1.278 schwarze 384: vis = 0;
1.290 schwarze 385: taboff = p->tcol->taboff;
1.278 schwarze 386: for (ic = p->tcol->col; ic < nbr; ic++) {
1.270 schwarze 387:
1.278 schwarze 388: /*
389: * To avoid the printing of trailing whitespace,
390: * do not print whitespace right away, only count it.
391: */
1.270 schwarze 392:
1.278 schwarze 393: switch (p->tcol->buf[ic]) {
394: case '\n':
395: case ASCII_BREAK:
1.289 schwarze 396: case ASCII_NBRZW:
1.278 schwarze 397: continue;
1.290 schwarze 398: case ASCII_TABREF:
1.292 ! schwarze 399: taboff = -vis - (*p->getwidth)(p, ' ');
1.290 schwarze 400: continue;
1.278 schwarze 401: case '\t':
402: case ' ':
403: case ASCII_NBRSP:
1.288 schwarze 404: if (p->tcol->buf[ic] == '\t') {
1.290 schwarze 405: if (taboff < 0 && (size_t)-taboff > vis)
406: vt = 0;
407: else
408: vt = vis + taboff;
1.288 schwarze 409: dv = term_tab_next(vt) - vt;
410: } else
1.292 ! schwarze 411: dv = (*p->getwidth)(p, ' ');
1.280 schwarze 412: vbl += dv;
413: vis += dv;
1.278 schwarze 414: continue;
415: default:
416: break;
417: }
1.168 schwarze 418:
1.278 schwarze 419: /*
420: * We found a non-blank character to print,
421: * so write preceding white space now.
422: */
1.267 schwarze 423:
1.278 schwarze 424: if (vbl > 0) {
425: (*p->advance)(p, vbl);
426: vbl = 0;
427: }
1.111 kristaps 428:
1.278 schwarze 429: /* Print the character and adjust the visual position. */
1.15 kristaps 430:
1.278 schwarze 431: (*p->letter)(p, p->tcol->buf[ic]);
432: if (p->tcol->buf[ic] == '\b') {
1.292 ! schwarze 433: dv = (*p->getwidth)(p, p->tcol->buf[ic - 1]);
1.278 schwarze 434: p->viscol -= dv;
435: vis -= dv;
436: } else {
1.292 ! schwarze 437: dv = (*p->getwidth)(p, p->tcol->buf[ic]);
1.278 schwarze 438: p->viscol += dv;
439: vis += dv;
440: }
441: }
442: p->tcol->col = nbr;
1.264 schwarze 443: }
444:
1.292 ! schwarze 445: /*
! 446: * Print the margin character, if one is configured,
! 447: * and end the output line.
! 448: */
1.264 schwarze 449: static void
450: endline(struct termp *p)
451: {
452: if ((p->flags & (TERMP_NEWMC | TERMP_ENDMC)) == TERMP_ENDMC) {
453: p->mc = NULL;
454: p->flags &= ~TERMP_ENDMC;
455: }
456: if (p->mc != NULL) {
1.292 ! schwarze 457: if (p->viscol > 0 && p->viscol <= p->maxrmargin)
! 458: (*p->advance)(p,
! 459: p->maxrmargin - p->viscol + term_len(p, 1));
1.264 schwarze 460: p->flags |= TERMP_NOBUF | TERMP_NOSPACE;
461: term_word(p, p->mc);
462: p->flags &= ~(TERMP_NOBUF | TERMP_NEWMC);
463: }
464: (*p->endline)(p);
1.15 kristaps 465: }
466:
1.222 schwarze 467: /*
1.71 kristaps 468: * A newline only breaks an existing line; it won't assert vertical
469: * space. All data in the output buffer is flushed prior to the newline
470: * assertion.
471: */
472: void
473: term_newln(struct termp *p)
1.15 kristaps 474: {
1.71 kristaps 475: p->flags |= TERMP_NOSPACE;
1.269 schwarze 476: if (p->tcol->lastcol || p->viscol)
1.200 schwarze 477: term_flushln(p);
1.290 schwarze 478: p->tcol->taboff = 0;
1.16 kristaps 479: }
480:
1.71 kristaps 481: /*
482: * Asserts a vertical space (a full, empty line-break between lines).
483: * Note that if used twice, this will cause two blank spaces and so on.
484: * All data in the output buffer is flushed prior to the newline
485: * assertion.
486: */
487: void
488: term_vspace(struct termp *p)
1.16 kristaps 489: {
490:
1.62 kristaps 491: term_newln(p);
1.202 schwarze 492: if (0 < p->skipvsp)
493: p->skipvsp--;
494: else
495: (*p->endline)(p);
1.16 kristaps 496: }
497:
1.238 schwarze 498: /* Swap current and previous font; for \fP and .ft P */
1.125 kristaps 499: void
500: term_fontlast(struct termp *p)
501: {
502: enum termfont f;
503:
504: f = p->fontl;
505: p->fontl = p->fontq[p->fonti];
506: p->fontq[p->fonti] = f;
507: }
508:
1.238 schwarze 509: /* Set font, save current, discard previous; for \f, .ft, .B etc. */
1.125 kristaps 510: void
511: term_fontrepl(struct termp *p, enum termfont f)
512: {
513:
514: p->fontl = p->fontq[p->fonti];
515: p->fontq[p->fonti] = f;
516: }
517:
1.238 schwarze 518: /* Set font, save previous. */
1.125 kristaps 519: void
520: term_fontpush(struct termp *p, enum termfont f)
521: {
522:
523: p->fontl = p->fontq[p->fonti];
1.238 schwarze 524: if (++p->fonti == p->fontsz) {
525: p->fontsz += 8;
526: p->fontq = mandoc_reallocarray(p->fontq,
1.256 schwarze 527: p->fontsz, sizeof(*p->fontq));
1.238 schwarze 528: }
529: p->fontq[p->fonti] = f;
1.125 kristaps 530: }
531:
1.238 schwarze 532: /* Flush to make the saved pointer current again. */
1.125 kristaps 533: void
1.244 schwarze 534: term_fontpopq(struct termp *p, int i)
1.125 kristaps 535: {
536:
1.244 schwarze 537: assert(i >= 0);
538: if (p->fonti > i)
539: p->fonti = i;
1.125 kristaps 540: }
1.94 kristaps 541:
1.238 schwarze 542: /* Pop one font off the stack. */
1.125 kristaps 543: void
544: term_fontpop(struct termp *p)
545: {
546:
547: assert(p->fonti);
548: p->fonti--;
1.17 kristaps 549: }
550:
1.71 kristaps 551: /*
552: * Handle pwords, partial words, which may be either a single word or a
553: * phrase that cannot be broken down (such as a literal string). This
554: * handles word styling.
555: */
1.86 kristaps 556: void
557: term_word(struct termp *p, const char *word)
1.65 kristaps 558: {
1.261 schwarze 559: struct roffsu su;
1.214 schwarze 560: const char nbrsp[2] = { ASCII_NBRSP, 0 };
1.292 ! schwarze 561: const char *seq; /* Escape sequence argument. */
! 562: const char *cp; /* String to be printed. */
! 563: size_t csz; /* String length in basic units. */
! 564: size_t lsz; /* Line width in basic units. */
! 565: size_t ssz; /* Substring length in bytes. */
! 566: int sz; /* Argument length in bytes. */
! 567: int uc; /* Unicode codepoint number. */
! 568: int bu; /* Width in basic units. */
1.184 kristaps 569: enum mandoc_esc esc;
1.100 kristaps 570:
1.264 schwarze 571: if ((p->flags & TERMP_NOBUF) == 0) {
572: if ((p->flags & TERMP_NOSPACE) == 0) {
573: if ((p->flags & TERMP_KEEP) == 0) {
1.151 schwarze 574: bufferc(p, ' ');
1.264 schwarze 575: if (p->flags & TERMP_SENTENCE)
576: bufferc(p, ' ');
577: } else
578: bufferc(p, ASCII_NBRSP);
579: }
580: if (p->flags & TERMP_PREKEEP)
581: p->flags |= TERMP_KEEP;
582: if (p->flags & TERMP_NONOSPACE)
583: p->flags |= TERMP_NOSPACE;
584: else
585: p->flags &= ~TERMP_NOSPACE;
586: p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE);
587: p->skipvsp = 0;
1.133 kristaps 588: }
1.65 kristaps 589:
1.184 kristaps 590: while ('\0' != *word) {
1.203 schwarze 591: if ('\\' != *word) {
1.214 schwarze 592: if (TERMP_NBRWORD & p->flags) {
593: if (' ' == *word) {
594: encode(p, nbrsp, 1);
595: word++;
596: continue;
597: }
598: ssz = strcspn(word, "\\ ");
599: } else
600: ssz = strcspn(word, "\\");
1.162 kristaps 601: encode(p, word, ssz);
1.203 schwarze 602: word += (int)ssz;
1.124 kristaps 603: continue;
1.203 schwarze 604: }
1.124 kristaps 605:
1.184 kristaps 606: word++;
607: esc = mandoc_escape(&word, &seq, &sz);
608: switch (esc) {
1.222 schwarze 609: case ESCAPE_UNICODE:
1.229 schwarze 610: uc = mchars_num2uc(seq + 1, sz - 1);
1.192 kristaps 611: break;
1.222 schwarze 612: case ESCAPE_NUMBERED:
1.233 schwarze 613: uc = mchars_num2char(seq, sz);
1.289 schwarze 614: if (uc >= 0)
615: break;
616: bufferc(p, ASCII_NBRZW);
617: continue;
1.222 schwarze 618: case ESCAPE_SPECIAL:
1.229 schwarze 619: if (p->enc == TERMENC_ASCII) {
1.254 schwarze 620: cp = mchars_spec2str(seq, sz, &ssz);
1.232 schwarze 621: if (cp != NULL)
1.229 schwarze 622: encode(p, cp, ssz);
1.289 schwarze 623: else
624: bufferc(p, ASCII_NBRZW);
1.229 schwarze 625: } else {
1.254 schwarze 626: uc = mchars_spec2cp(seq, sz);
1.230 schwarze 627: if (uc > 0)
628: encode1(p, uc);
1.289 schwarze 629: else
630: bufferc(p, ASCII_NBRZW);
1.229 schwarze 631: }
1.233 schwarze 632: continue;
1.277 schwarze 633: case ESCAPE_UNDEF:
634: uc = *seq;
635: break;
1.222 schwarze 636: case ESCAPE_FONTBOLD:
1.283 schwarze 637: case ESCAPE_FONTCB:
1.125 kristaps 638: term_fontrepl(p, TERMFONT_BOLD);
1.233 schwarze 639: continue;
1.222 schwarze 640: case ESCAPE_FONTITALIC:
1.283 schwarze 641: case ESCAPE_FONTCI:
1.125 kristaps 642: term_fontrepl(p, TERMFONT_UNDER);
1.233 schwarze 643: continue;
1.222 schwarze 644: case ESCAPE_FONTBI:
1.209 schwarze 645: term_fontrepl(p, TERMFONT_BI);
1.233 schwarze 646: continue;
1.222 schwarze 647: case ESCAPE_FONT:
1.283 schwarze 648: case ESCAPE_FONTCR:
1.222 schwarze 649: case ESCAPE_FONTROMAN:
1.125 kristaps 650: term_fontrepl(p, TERMFONT_NONE);
1.233 schwarze 651: continue;
1.222 schwarze 652: case ESCAPE_FONTPREV:
1.125 kristaps 653: term_fontlast(p);
1.270 schwarze 654: continue;
655: case ESCAPE_BREAK:
656: bufferc(p, '\n');
1.233 schwarze 657: continue;
1.222 schwarze 658: case ESCAPE_NOSPACE:
1.248 schwarze 659: if (p->flags & TERMP_BACKAFTER)
660: p->flags &= ~TERMP_BACKAFTER;
661: else if (*word == '\0')
1.237 schwarze 662: p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE);
1.261 schwarze 663: continue;
1.275 schwarze 664: case ESCAPE_DEVICE:
665: if (p->type == TERMTYPE_PDF)
666: encode(p, "pdf", 3);
667: else if (p->type == TERMTYPE_PS)
668: encode(p, "ps", 2);
669: else if (p->enc == TERMENC_ASCII)
670: encode(p, "ascii", 5);
671: else
672: encode(p, "utf8", 4);
673: continue;
1.261 schwarze 674: case ESCAPE_HORIZ:
1.286 schwarze 675: if (p->flags & TERMP_BACKAFTER) {
676: p->flags &= ~TERMP_BACKAFTER;
677: continue;
678: }
1.273 schwarze 679: if (*seq == '|') {
680: seq++;
1.292 ! schwarze 681: bu = -term_len(p, p->col);
1.273 schwarze 682: } else
1.292 ! schwarze 683: bu = 0;
1.268 schwarze 684: if (a2roffsu(seq, &su, SCALE_EM) == NULL)
1.261 schwarze 685: continue;
1.292 ! schwarze 686: bu += term_hspan(p, &su);
! 687: if (bu >= 0) {
! 688: while (bu > 0) {
! 689: bu -= term_len(p, 1);
1.286 schwarze 690: if (p->flags & TERMP_BACKBEFORE)
691: p->flags &= ~TERMP_BACKBEFORE;
692: else
693: bufferc(p, ASCII_NBRSP);
1.285 schwarze 694: }
1.286 schwarze 695: continue;
696: }
697: if (p->flags & TERMP_BACKBEFORE) {
698: p->flags &= ~TERMP_BACKBEFORE;
1.292 ! schwarze 699: assert(p->col > 1);
1.286 schwarze 700: p->col--;
701: }
1.292 ! schwarze 702: if (term_len(p, p->col) >= (size_t)(-bu)) {
! 703: p->col -= -bu / term_len(p, 1);
1.285 schwarze 704: } else {
1.292 ! schwarze 705: bu += term_len(p, p->col);
1.261 schwarze 706: p->col = 0;
1.292 ! schwarze 707: if (p->tcol->offset > (size_t)(-bu)) {
! 708: p->ti += bu;
! 709: p->tcol->offset += bu;
1.261 schwarze 710: } else {
1.266 schwarze 711: p->ti -= p->tcol->offset;
712: p->tcol->offset = 0;
1.261 schwarze 713: }
1.262 schwarze 714: }
715: continue;
716: case ESCAPE_HLINE:
1.272 schwarze 717: if ((cp = a2roffsu(seq, &su, SCALE_EM)) == NULL)
1.262 schwarze 718: continue;
1.292 ! schwarze 719: bu = term_hspan(p, &su);
! 720: if (bu <= 0) {
1.266 schwarze 721: if (p->tcol->rmargin <= p->tcol->offset)
1.262 schwarze 722: continue;
1.266 schwarze 723: lsz = p->tcol->rmargin - p->tcol->offset;
1.262 schwarze 724: } else
1.292 ! schwarze 725: lsz = bu;
1.272 schwarze 726: if (*cp == seq[-1])
1.262 schwarze 727: uc = -1;
1.272 schwarze 728: else if (*cp == '\\') {
729: seq = cp + 1;
1.262 schwarze 730: esc = mandoc_escape(&seq, &cp, &sz);
731: switch (esc) {
732: case ESCAPE_UNICODE:
733: uc = mchars_num2uc(cp + 1, sz - 1);
734: break;
735: case ESCAPE_NUMBERED:
736: uc = mchars_num2char(cp, sz);
737: break;
738: case ESCAPE_SPECIAL:
739: uc = mchars_spec2cp(cp, sz);
740: break;
1.277 schwarze 741: case ESCAPE_UNDEF:
742: uc = *seq;
743: break;
1.262 schwarze 744: default:
745: uc = -1;
746: break;
747: }
748: } else
1.272 schwarze 749: uc = *cp;
1.262 schwarze 750: if (uc < 0x20 || (uc > 0x7E && uc < 0xA0))
751: uc = '_';
752: if (p->enc == TERMENC_ASCII) {
753: cp = ascii_uc2str(uc);
754: csz = term_strlen(p, cp);
755: ssz = strlen(cp);
756: } else
1.292 ! schwarze 757: csz = (*p->getwidth)(p, uc);
! 758: while (lsz > 0) {
1.262 schwarze 759: if (p->enc == TERMENC_ASCII)
760: encode(p, cp, ssz);
761: else
762: encode1(p, uc);
1.292 ! schwarze 763: if (lsz > csz)
! 764: lsz -= csz;
! 765: else
! 766: lsz = 0;
1.261 schwarze 767: }
1.233 schwarze 768: continue;
1.222 schwarze 769: case ESCAPE_SKIPCHAR:
1.248 schwarze 770: p->flags |= TERMP_BACKAFTER;
1.233 schwarze 771: continue;
1.243 schwarze 772: case ESCAPE_OVERSTRIKE:
773: cp = seq + sz;
774: while (seq < cp) {
775: if (*seq == '\\') {
776: mandoc_escape(&seq, NULL, NULL);
777: continue;
778: }
779: encode1(p, *seq++);
1.248 schwarze 780: if (seq < cp) {
781: if (p->flags & TERMP_BACKBEFORE)
782: p->flags |= TERMP_BACKAFTER;
783: else
784: p->flags |= TERMP_BACKBEFORE;
785: }
1.243 schwarze 786: }
1.249 schwarze 787: /* Trim trailing backspace/blank pair. */
1.269 schwarze 788: if (p->tcol->lastcol > 2 &&
789: (p->tcol->buf[p->tcol->lastcol - 1] == ' ' ||
790: p->tcol->buf[p->tcol->lastcol - 1] == '\t'))
791: p->tcol->lastcol -= 2;
792: if (p->col > p->tcol->lastcol)
793: p->col = p->tcol->lastcol;
1.248 schwarze 794: continue;
1.289 schwarze 795: case ESCAPE_IGNORE:
796: bufferc(p, ASCII_NBRZW);
797: continue;
1.124 kristaps 798: default:
1.233 schwarze 799: continue;
800: }
801:
802: /*
803: * Common handling for Unicode and numbered
804: * character escape sequences.
805: */
806:
807: if (p->enc == TERMENC_ASCII) {
808: cp = ascii_uc2str(uc);
809: encode(p, cp, strlen(cp));
810: } else {
811: if ((uc < 0x20 && uc != 0x09) ||
812: (uc > 0x7E && uc < 0xA0))
813: uc = 0xFFFD;
814: encode1(p, uc);
1.124 kristaps 815: }
816: }
1.214 schwarze 817: p->flags &= ~TERMP_NBRWORD;
1.65 kristaps 818: }
819:
1.71 kristaps 820: static void
1.266 schwarze 821: adjbuf(struct termp_col *c, size_t sz)
1.51 kristaps 822: {
1.266 schwarze 823: if (c->maxcols == 0)
824: c->maxcols = 1024;
825: while (c->maxcols <= sz)
826: c->maxcols <<= 2;
827: c->buf = mandoc_reallocarray(c->buf, c->maxcols, sizeof(*c->buf));
1.51 kristaps 828: }
829:
1.79 kristaps 830: static void
1.125 kristaps 831: bufferc(struct termp *p, char c)
832: {
1.264 schwarze 833: if (p->flags & TERMP_NOBUF) {
834: (*p->letter)(p, c);
835: return;
836: }
1.266 schwarze 837: if (p->col + 1 >= p->tcol->maxcols)
838: adjbuf(p->tcol, p->col + 1);
1.269 schwarze 839: if (p->tcol->lastcol <= p->col || (c != ' ' && c != ASCII_NBRSP))
1.266 schwarze 840: p->tcol->buf[p->col] = c;
1.269 schwarze 841: if (p->tcol->lastcol < ++p->col)
842: p->tcol->lastcol = p->col;
1.125 kristaps 843: }
844:
1.290 schwarze 845: void
846: term_tab_ref(struct termp *p)
847: {
848: if (p->tcol->lastcol && p->tcol->lastcol <= p->col &&
849: (p->flags & TERMP_NOBUF) == 0)
850: bufferc(p, ASCII_TABREF);
851: }
852:
1.194 kristaps 853: /*
854: * See encode().
855: * Do this for a single (probably unicode) value.
856: * Does not check for non-decorated glyphs.
857: */
858: static void
859: encode1(struct termp *p, int c)
860: {
861: enum termfont f;
862:
1.264 schwarze 863: if (p->flags & TERMP_NOBUF) {
864: (*p->letter)(p, c);
865: return;
866: }
867:
1.266 schwarze 868: if (p->col + 7 >= p->tcol->maxcols)
869: adjbuf(p->tcol, p->col + 7);
1.194 kristaps 870:
1.255 schwarze 871: f = (c == ASCII_HYPH || c > 127 || isgraph(c)) ?
1.248 schwarze 872: p->fontq[p->fonti] : TERMFONT_NONE;
1.194 kristaps 873:
1.248 schwarze 874: if (p->flags & TERMP_BACKBEFORE) {
1.266 schwarze 875: if (p->tcol->buf[p->col - 1] == ' ' ||
876: p->tcol->buf[p->col - 1] == '\t')
1.249 schwarze 877: p->col--;
878: else
1.266 schwarze 879: p->tcol->buf[p->col++] = '\b';
1.248 schwarze 880: p->flags &= ~TERMP_BACKBEFORE;
881: }
1.266 schwarze 882: if (f == TERMFONT_UNDER || f == TERMFONT_BI) {
883: p->tcol->buf[p->col++] = '_';
884: p->tcol->buf[p->col++] = '\b';
885: }
886: if (f == TERMFONT_BOLD || f == TERMFONT_BI) {
887: if (c == ASCII_HYPH)
888: p->tcol->buf[p->col++] = '-';
1.209 schwarze 889: else
1.266 schwarze 890: p->tcol->buf[p->col++] = c;
891: p->tcol->buf[p->col++] = '\b';
1.209 schwarze 892: }
1.269 schwarze 893: if (p->tcol->lastcol <= p->col || (c != ' ' && c != ASCII_NBRSP))
1.266 schwarze 894: p->tcol->buf[p->col] = c;
1.269 schwarze 895: if (p->tcol->lastcol < ++p->col)
896: p->tcol->lastcol = p->col;
1.248 schwarze 897: if (p->flags & TERMP_BACKAFTER) {
898: p->flags |= TERMP_BACKBEFORE;
899: p->flags &= ~TERMP_BACKAFTER;
900: }
1.194 kristaps 901: }
902:
1.125 kristaps 903: static void
904: encode(struct termp *p, const char *word, size_t sz)
905: {
1.210 schwarze 906: size_t i;
1.264 schwarze 907:
908: if (p->flags & TERMP_NOBUF) {
909: for (i = 0; i < sz; i++)
910: (*p->letter)(p, word[i]);
911: return;
912: }
1.188 kristaps 913:
1.266 schwarze 914: if (p->col + 2 + (sz * 5) >= p->tcol->maxcols)
915: adjbuf(p->tcol, p->col + 2 + (sz * 5));
1.165 kristaps 916:
1.210 schwarze 917: for (i = 0; i < sz; i++) {
1.209 schwarze 918: if (ASCII_HYPH == word[i] ||
919: isgraph((unsigned char)word[i]))
920: encode1(p, word[i]);
1.259 schwarze 921: else {
1.269 schwarze 922: if (p->tcol->lastcol <= p->col ||
1.265 schwarze 923: (word[i] != ' ' && word[i] != ASCII_NBRSP))
1.266 schwarze 924: p->tcol->buf[p->col] = word[i];
1.265 schwarze 925: p->col++;
1.259 schwarze 926:
927: /*
928: * Postpone the effect of \z while handling
929: * an overstrike sequence from ascii_uc2str().
930: */
931:
932: if (word[i] == '\b' &&
933: (p->flags & TERMP_BACKBEFORE)) {
934: p->flags &= ~TERMP_BACKBEFORE;
935: p->flags |= TERMP_BACKAFTER;
936: }
937: }
1.79 kristaps 938: }
1.269 schwarze 939: if (p->tcol->lastcol < p->col)
940: p->tcol->lastcol = p->col;
1.219 schwarze 941: }
942:
943: void
944: term_setwidth(struct termp *p, const char *wstr)
945: {
946: struct roffsu su;
1.247 schwarze 947: int iop, width;
1.219 schwarze 948:
1.220 schwarze 949: iop = 0;
950: width = 0;
1.219 schwarze 951: if (NULL != wstr) {
952: switch (*wstr) {
1.222 schwarze 953: case '+':
1.219 schwarze 954: iop = 1;
955: wstr++;
956: break;
1.222 schwarze 957: case '-':
1.219 schwarze 958: iop = -1;
959: wstr++;
960: break;
961: default:
962: break;
963: }
1.268 schwarze 964: if (a2roffsu(wstr, &su, SCALE_MAX) != NULL)
1.220 schwarze 965: width = term_hspan(p, &su);
966: else
1.219 schwarze 967: iop = 0;
968: }
969: (*p->setwidth)(p, iop, width);
1.79 kristaps 970: }
1.106 kristaps 971:
1.107 kristaps 972: size_t
1.149 kristaps 973: term_len(const struct termp *p, size_t sz)
974: {
1.292 ! schwarze 975: return (*p->getwidth)(p, ' ') * sz;
1.149 kristaps 976: }
977:
1.203 schwarze 978: static size_t
979: cond_width(const struct termp *p, int c, int *skip)
980: {
981: if (*skip) {
982: (*skip) = 0;
1.252 schwarze 983: return 0;
1.203 schwarze 984: } else
1.292 ! schwarze 985: return (*p->getwidth)(p, c);
1.203 schwarze 986: }
1.149 kristaps 987:
988: size_t
989: term_strlen(const struct termp *p, const char *cp)
990: {
1.292 ! schwarze 991: const char *seq; /* Escape sequence argument. */
! 992: const char *rhs; /* String to be printed. */
! 993:
! 994: /* Widths in basic units. */
! 995: size_t sz; /* Return value. */
! 996: size_t this_sz; /* Individual char for overstrike. */
! 997: size_t max_sz; /* Result of overstrike. */
! 998:
! 999: /* Numbers of bytes. */
! 1000: size_t rsz; /* Substring length in bytes. */
! 1001: size_t i; /* Byte index in substring. */
! 1002: int ssz; /* Argument length in bytes. */
! 1003: int skip; /* Number of bytes to skip. */
! 1004:
! 1005: int uc; /* Unicode codepoint number. */
1.196 kristaps 1006: enum mandoc_esc esc;
1.292 ! schwarze 1007:
1.289 schwarze 1008: static const char rej[] = { '\\', ASCII_NBRSP, ASCII_NBRZW,
1.290 schwarze 1009: ASCII_BREAK, ASCII_HYPH, ASCII_TABREF, '\0' };
1.171 kristaps 1010:
1.184 kristaps 1011: /*
1012: * Account for escaped sequences within string length
1013: * calculations. This follows the logic in term_word() as we
1014: * must calculate the width of produced strings.
1015: */
1016:
1017: sz = 0;
1.203 schwarze 1018: skip = 0;
1.189 kristaps 1019: while ('\0' != *cp) {
1020: rsz = strcspn(cp, rej);
1021: for (i = 0; i < rsz; i++)
1.203 schwarze 1022: sz += cond_width(p, *cp++, &skip);
1.189 kristaps 1023:
1.184 kristaps 1024: switch (*cp) {
1.222 schwarze 1025: case '\\':
1.189 kristaps 1026: cp++;
1.277 schwarze 1027: rhs = NULL;
1.196 kristaps 1028: esc = mandoc_escape(&cp, &seq, &ssz);
1029: switch (esc) {
1.222 schwarze 1030: case ESCAPE_UNICODE:
1.234 schwarze 1031: uc = mchars_num2uc(seq + 1, ssz - 1);
1.194 kristaps 1032: break;
1.222 schwarze 1033: case ESCAPE_NUMBERED:
1.233 schwarze 1034: uc = mchars_num2char(seq, ssz);
1035: if (uc < 0)
1036: continue;
1.171 kristaps 1037: break;
1.222 schwarze 1038: case ESCAPE_SPECIAL:
1.233 schwarze 1039: if (p->enc == TERMENC_ASCII) {
1.254 schwarze 1040: rhs = mchars_spec2str(seq, ssz, &rsz);
1.233 schwarze 1041: if (rhs != NULL)
1042: break;
1043: } else {
1.254 schwarze 1044: uc = mchars_spec2cp(seq, ssz);
1.233 schwarze 1045: if (uc > 0)
1046: sz += cond_width(p, uc, &skip);
1.229 schwarze 1047: }
1.233 schwarze 1048: continue;
1.277 schwarze 1049: case ESCAPE_UNDEF:
1050: uc = *seq;
1051: break;
1.275 schwarze 1052: case ESCAPE_DEVICE:
1053: if (p->type == TERMTYPE_PDF) {
1054: rhs = "pdf";
1055: rsz = 3;
1056: } else if (p->type == TERMTYPE_PS) {
1057: rhs = "ps";
1058: rsz = 2;
1059: } else if (p->enc == TERMENC_ASCII) {
1060: rhs = "ascii";
1061: rsz = 5;
1062: } else {
1063: rhs = "utf8";
1064: rsz = 4;
1065: }
1066: break;
1.222 schwarze 1067: case ESCAPE_SKIPCHAR:
1.203 schwarze 1068: skip = 1;
1.243 schwarze 1069: continue;
1070: case ESCAPE_OVERSTRIKE:
1.292 ! schwarze 1071: this_sz = 0;
1.243 schwarze 1072: rhs = seq + ssz;
1073: while (seq < rhs) {
1074: if (*seq == '\\') {
1075: mandoc_escape(&seq, NULL, NULL);
1076: continue;
1077: }
1.292 ! schwarze 1078: this_sz = (*p->getwidth)(p, *seq++);
! 1079: if (max_sz < this_sz)
! 1080: max_sz = this_sz;
1.243 schwarze 1081: }
1.292 ! schwarze 1082: sz += max_sz;
1.233 schwarze 1083: continue;
1.171 kristaps 1084: default:
1.233 schwarze 1085: continue;
1.171 kristaps 1086: }
1.149 kristaps 1087:
1.233 schwarze 1088: /*
1089: * Common handling for Unicode and numbered
1090: * character escape sequences.
1091: */
1092:
1093: if (rhs == NULL) {
1094: if (p->enc == TERMENC_ASCII) {
1095: rhs = ascii_uc2str(uc);
1096: rsz = strlen(rhs);
1097: } else {
1098: if ((uc < 0x20 && uc != 0x09) ||
1099: (uc > 0x7E && uc < 0xA0))
1100: uc = 0xFFFD;
1101: sz += cond_width(p, uc, &skip);
1102: continue;
1103: }
1104: }
1.184 kristaps 1105:
1.203 schwarze 1106: if (skip) {
1107: skip = 0;
1108: break;
1109: }
1.233 schwarze 1110:
1111: /*
1112: * Common handling for all escape sequences
1113: * printing more than one character.
1114: */
1.203 schwarze 1115:
1.184 kristaps 1116: for (i = 0; i < rsz; i++)
1.292 ! schwarze 1117: sz += (*p->getwidth)(p, *rhs++);
1.184 kristaps 1118: break;
1.222 schwarze 1119: case ASCII_NBRSP:
1.203 schwarze 1120: sz += cond_width(p, ' ', &skip);
1.176 kristaps 1121: cp++;
1.184 kristaps 1122: break;
1.222 schwarze 1123: case ASCII_HYPH:
1.203 schwarze 1124: sz += cond_width(p, '-', &skip);
1.176 kristaps 1125: cp++;
1.184 kristaps 1126: break;
1127: default:
1128: break;
1129: }
1.189 kristaps 1130: }
1.149 kristaps 1131:
1.252 schwarze 1132: return sz;
1.149 kristaps 1133: }
1134:
1.240 schwarze 1135: int
1.149 kristaps 1136: term_vspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 1137: {
1138: double r;
1.241 schwarze 1139: int ri;
1.106 kristaps 1140:
1.107 kristaps 1141: switch (su->unit) {
1.239 schwarze 1142: case SCALE_BU:
1143: r = su->scale / 40.0;
1144: break;
1.222 schwarze 1145: case SCALE_CM:
1.239 schwarze 1146: r = su->scale * 6.0 / 2.54;
1147: break;
1148: case SCALE_FS:
1149: r = su->scale * 65536.0 / 40.0;
1.106 kristaps 1150: break;
1.222 schwarze 1151: case SCALE_IN:
1.225 schwarze 1152: r = su->scale * 6.0;
1.106 kristaps 1153: break;
1.239 schwarze 1154: case SCALE_MM:
1155: r = su->scale * 0.006;
1156: break;
1.222 schwarze 1157: case SCALE_PC:
1.107 kristaps 1158: r = su->scale;
1.106 kristaps 1159: break;
1.222 schwarze 1160: case SCALE_PT:
1.239 schwarze 1161: r = su->scale / 12.0;
1.106 kristaps 1162: break;
1.239 schwarze 1163: case SCALE_EN:
1164: case SCALE_EM:
1165: r = su->scale * 0.6;
1.106 kristaps 1166: break;
1.222 schwarze 1167: case SCALE_VS:
1.107 kristaps 1168: r = su->scale;
1.106 kristaps 1169: break;
1170: default:
1.239 schwarze 1171: abort();
1.106 kristaps 1172: }
1.241 schwarze 1173: ri = r > 0.0 ? r + 0.4995 : r - 0.4995;
1.252 schwarze 1174: return ri < 66 ? ri : 1;
1.106 kristaps 1175: }
1176:
1.247 schwarze 1177: /*
1.292 ! schwarze 1178: * Convert a scaling width to basic units.
1.247 schwarze 1179: */
1.240 schwarze 1180: int
1.149 kristaps 1181: term_hspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 1182: {
1.252 schwarze 1183: return (*p->hspan)(p, su);
1.106 kristaps 1184: }
CVSweb
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to term.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [cvsweb.bsd.lv] / mandoc