Annotation of mandoc/term.c, Revision 1.153
1.153 ! kristaps 1: /* $Id: term.c,v 1.152 2010/06/28 09:48:44 kristaps Exp $ */
1.1 kristaps 2: /*
1.148 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.74 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.74 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
1.128 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.126 kristaps 21: #include <sys/types.h>
22:
1.1 kristaps 23: #include <assert.h>
1.122 kristaps 24: #include <ctype.h>
1.141 kristaps 25: #include <stdint.h>
1.22 kristaps 26: #include <stdio.h>
1.1 kristaps 27: #include <stdlib.h>
28: #include <string.h>
29:
1.137 kristaps 30: #include "mandoc.h"
1.101 kristaps 31: #include "chars.h"
1.107 kristaps 32: #include "out.h"
1.71 kristaps 33: #include "term.h"
1.105 kristaps 34: #include "main.h"
1.1 kristaps 35:
1.125 kristaps 36: static void spec(struct termp *, const char *, size_t);
37: static void res(struct termp *, const char *, size_t);
38: static void buffera(struct termp *, const char *, size_t);
39: static void bufferc(struct termp *, char);
40: static void adjbuf(struct termp *p, size_t);
41: static void encode(struct termp *, const char *, size_t);
1.11 kristaps 42:
43:
1.145 kristaps 44: void
1.71 kristaps 45: term_free(struct termp *p)
1.14 kristaps 46: {
47:
1.71 kristaps 48: if (p->buf)
49: free(p->buf);
1.102 kristaps 50: if (p->symtab)
1.101 kristaps 51: chars_free(p->symtab);
1.145 kristaps 52:
1.142 kristaps 53: free(p);
54: }
55:
56:
57: void
58: term_begin(struct termp *p, term_margin head,
59: term_margin foot, const void *arg)
60: {
61:
62: p->headf = head;
63: p->footf = foot;
64: p->argf = arg;
1.146 kristaps 65: (*p->begin)(p);
1.142 kristaps 66: }
67:
68:
69: void
70: term_end(struct termp *p)
71: {
72:
1.146 kristaps 73: (*p->end)(p);
1.14 kristaps 74: }
75:
76:
1.145 kristaps 77: struct termp *
78: term_alloc(enum termenc enc)
1.14 kristaps 79: {
1.141 kristaps 80: struct termp *p;
1.14 kristaps 81:
1.117 kristaps 82: p = calloc(1, sizeof(struct termp));
83: if (NULL == p) {
1.120 kristaps 84: perror(NULL);
1.117 kristaps 85: exit(EXIT_FAILURE);
86: }
1.141 kristaps 87:
1.71 kristaps 88: p->enc = enc;
89: return(p);
1.14 kristaps 90: }
91:
92:
1.71 kristaps 93: /*
94: * Flush a line of text. A "line" is loosely defined as being something
95: * that should be followed by a newline, regardless of whether it's
96: * broken apart by newlines getting there. A line can also be a
1.130 kristaps 97: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
98: * not have a trailing newline.
1.71 kristaps 99: *
1.130 kristaps 100: * The following flags may be specified:
1.71 kristaps 101: *
102: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
103: * offset value. This is useful when doing columnar lists where the
104: * prior column has right-padded.
105: *
106: * - TERMP_NOBREAK: this is the most important and is used when making
107: * columns. In short: don't print a newline and instead pad to the
108: * right margin. Used in conjunction with TERMP_NOLPAD.
109: *
1.91 kristaps 110: * - TERMP_TWOSPACE: when padding, make sure there are at least two
111: * space characters of padding. Otherwise, rather break the line.
112: *
1.84 kristaps 113: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
114: * the line is overrun, and don't pad-right if it's underrun.
115: *
116: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
117: * overruning, instead save the position and continue at that point
118: * when the next invocation.
1.71 kristaps 119: *
120: * In-line line breaking:
121: *
122: * If TERMP_NOBREAK is specified and the line overruns the right
123: * margin, it will break and pad-right to the right margin after
124: * writing. If maxrmargin is violated, it will break and continue
1.114 kristaps 125: * writing from the right-margin, which will lead to the above scenario
126: * upon exit. Otherwise, the line will break at the right margin.
1.71 kristaps 127: */
128: void
129: term_flushln(struct termp *p)
1.53 kristaps 130: {
1.114 kristaps 131: int i; /* current input position in p->buf */
132: size_t vis; /* current visual position on output */
133: size_t vbl; /* number of blanks to prepend to output */
1.136 schwarze 134: size_t vend; /* end of word visual position on output */
1.114 kristaps 135: size_t bp; /* visual right border position */
1.152 kristaps 136: int j; /* temporary loop index for p->buf */
137: int jhy; /* last hyph before overflow w/r/t j */
138: size_t maxvis; /* output position of visible boundary */
139: size_t mmax; /* used in calculating bp */
1.53 kristaps 140:
1.71 kristaps 141: /*
142: * First, establish the maximum columns of "visible" content.
143: * This is usually the difference between the right-margin and
144: * an indentation, but can be, for tagged lists or columns, a
1.115 kristaps 145: * small set of values.
1.71 kristaps 146: */
1.53 kristaps 147:
1.71 kristaps 148: assert(p->offset < p->rmargin);
1.92 kristaps 149:
1.129 kristaps 150: maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 151: /* LINTED */
1.129 kristaps 152: 0 : p->rmargin - p->offset - p->overstep;
153: mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 154: /* LINTED */
1.129 kristaps 155: 0 : p->maxrmargin - p->offset - p->overstep;
1.92 kristaps 156:
1.71 kristaps 157: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.115 kristaps 158:
1.136 schwarze 159: /*
160: * Indent the first line of a paragraph.
161: */
162: vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
163:
1.115 kristaps 164: /*
165: * FIXME: if bp is zero, we still output the first word before
166: * breaking the line.
167: */
168:
1.136 schwarze 169: vis = vend = i = 0;
170: while (i < (int)p->col) {
1.71 kristaps 171:
172: /*
1.138 schwarze 173: * Handle literal tab characters.
174: */
175: for (j = i; j < (int)p->col; j++) {
176: if ('\t' != p->buf[j])
177: break;
178: vend = (vis/p->tabwidth+1)*p->tabwidth;
179: vbl += vend - vis;
180: vis = vend;
181: }
182:
183: /*
1.71 kristaps 184: * Count up visible word characters. Control sequences
185: * (starting with the CSI) aren't counted. A space
186: * generates a non-printing word, which is valid (the
187: * space is printed according to regular spacing rules).
188: */
189:
190: /* LINTED */
1.140 kristaps 191: for (jhy = 0; j < (int)p->col; j++) {
1.138 schwarze 192: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.71 kristaps 193: break;
1.140 kristaps 194: if (8 != p->buf[j]) {
195: if (vend > vis && vend < bp &&
196: ASCII_HYPH == p->buf[j])
197: jhy = j;
1.153 ! kristaps 198: vend += (*p->width)(p, p->buf[j]);
! 199: } else {
! 200: assert(j);
! 201: vend -= (*p->width)(p, p->buf[j - 1]);
! 202: }
1.71 kristaps 203: }
1.53 kristaps 204:
1.71 kristaps 205: /*
1.81 kristaps 206: * Find out whether we would exceed the right margin.
1.136 schwarze 207: * If so, break to the next line.
1.81 kristaps 208: */
1.140 kristaps 209: if (vend > bp && 0 == jhy && vis > 0) {
1.136 schwarze 210: vend -= vis;
1.146 kristaps 211: (*p->endline)(p);
1.81 kristaps 212: if (TERMP_NOBREAK & p->flags) {
1.139 schwarze 213: p->viscol = p->rmargin;
1.146 kristaps 214: (*p->advance)(p, p->rmargin);
1.136 schwarze 215: vend += p->rmargin - p->offset;
1.81 kristaps 216: } else {
1.139 schwarze 217: p->viscol = 0;
1.136 schwarze 218: vbl = p->offset;
1.81 kristaps 219: }
1.130 kristaps 220:
1.129 kristaps 221: /* Remove the p->overstep width. */
1.130 kristaps 222:
1.112 kristaps 223: bp += (int)/* LINTED */
1.129 kristaps 224: p->overstep;
225: p->overstep = 0;
1.71 kristaps 226: }
1.53 kristaps 227:
1.138 schwarze 228: /*
229: * Skip leading tabs, they were handled above.
230: */
231: while (i < (int)p->col && '\t' == p->buf[i])
232: i++;
233:
1.130 kristaps 234: /* Write out the [remaining] word. */
1.136 schwarze 235: for ( ; i < (int)p->col; i++) {
1.140 kristaps 236: if (vend > bp && jhy > 0 && i > jhy)
237: break;
1.138 schwarze 238: if ('\t' == p->buf[i])
239: break;
1.136 schwarze 240: if (' ' == p->buf[i]) {
241: while (' ' == p->buf[i]) {
1.153 ! kristaps 242: vbl += (*p->width)(p, p->buf[i]);
1.136 schwarze 243: i++;
244: }
1.71 kristaps 245: break;
1.136 schwarze 246: }
247: if (ASCII_NBRSP == p->buf[i]) {
1.153 ! kristaps 248: vbl += (*p->width)(p, ' ');
1.136 schwarze 249: continue;
250: }
1.130 kristaps 251:
1.136 schwarze 252: /*
253: * Now we definitely know there will be
254: * printable characters to output,
255: * so write preceding white space now.
256: */
257: if (vbl) {
1.146 kristaps 258: (*p->advance)(p, vbl);
1.139 schwarze 259: p->viscol += vbl;
1.136 schwarze 260: vbl = 0;
261: }
1.140 kristaps 262:
1.153 ! kristaps 263: if (ASCII_HYPH == p->buf[i]) {
1.146 kristaps 264: (*p->letter)(p, '-');
1.153 ! kristaps 265: p->viscol += (*p->width)(p, '-');
! 266: } else {
1.146 kristaps 267: (*p->letter)(p, p->buf[i]);
1.153 ! kristaps 268: p->viscol += (*p->width)(p, p->buf[i]);
! 269: }
1.136 schwarze 270: }
271: vend += vbl;
272: vis = vend;
1.71 kristaps 273: }
1.111 kristaps 274:
1.91 kristaps 275: p->col = 0;
1.129 kristaps 276: p->overstep = 0;
1.15 kristaps 277:
1.91 kristaps 278: if ( ! (TERMP_NOBREAK & p->flags)) {
1.139 schwarze 279: p->viscol = 0;
1.146 kristaps 280: (*p->endline)(p);
1.15 kristaps 281: return;
1.71 kristaps 282: }
1.15 kristaps 283:
1.91 kristaps 284: if (TERMP_HANG & p->flags) {
285: /* We need one blank after the tag. */
1.129 kristaps 286: p->overstep = /* LINTED */
1.153 ! kristaps 287: vis - maxvis + (*p->width)(p, ' ');
1.91 kristaps 288:
289: /*
290: * Behave exactly the same way as groff:
1.92 kristaps 291: * If we have overstepped the margin, temporarily move
292: * it to the right and flag the rest of the line to be
293: * shorter.
1.91 kristaps 294: * If we landed right at the margin, be happy.
1.92 kristaps 295: * If we are one step before the margin, temporarily
296: * move it one step LEFT and flag the rest of the line
297: * to be longer.
1.91 kristaps 298: */
1.129 kristaps 299: if (p->overstep >= -1) {
300: assert((int)maxvis + p->overstep >= 0);
1.92 kristaps 301: /* LINTED */
1.129 kristaps 302: maxvis += p->overstep;
1.92 kristaps 303: } else
1.129 kristaps 304: p->overstep = 0;
1.91 kristaps 305:
306: } else if (TERMP_DANGLE & p->flags)
307: return;
1.15 kristaps 308:
1.92 kristaps 309: /* Right-pad. */
310: if (maxvis > vis + /* LINTED */
1.153 ! kristaps 311: ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
1.139 schwarze 312: p->viscol += maxvis - vis;
1.146 kristaps 313: (*p->advance)(p, maxvis - vis);
1.142 kristaps 314: vis += (maxvis - vis);
1.139 schwarze 315: } else { /* ...or newline break. */
1.146 kristaps 316: (*p->endline)(p);
1.139 schwarze 317: p->viscol = p->rmargin;
1.146 kristaps 318: (*p->advance)(p, p->rmargin);
1.91 kristaps 319: }
1.15 kristaps 320: }
321:
322:
1.71 kristaps 323: /*
324: * A newline only breaks an existing line; it won't assert vertical
325: * space. All data in the output buffer is flushed prior to the newline
326: * assertion.
327: */
328: void
329: term_newln(struct termp *p)
1.15 kristaps 330: {
331:
1.71 kristaps 332: p->flags |= TERMP_NOSPACE;
1.139 schwarze 333: if (0 == p->col && 0 == p->viscol) {
1.71 kristaps 334: p->flags &= ~TERMP_NOLPAD;
1.15 kristaps 335: return;
1.16 kristaps 336: }
1.71 kristaps 337: term_flushln(p);
338: p->flags &= ~TERMP_NOLPAD;
1.16 kristaps 339: }
340:
341:
1.71 kristaps 342: /*
343: * Asserts a vertical space (a full, empty line-break between lines).
344: * Note that if used twice, this will cause two blank spaces and so on.
345: * All data in the output buffer is flushed prior to the newline
346: * assertion.
347: */
348: void
349: term_vspace(struct termp *p)
1.16 kristaps 350: {
351:
1.62 kristaps 352: term_newln(p);
1.139 schwarze 353: p->viscol = 0;
1.146 kristaps 354: (*p->endline)(p);
1.16 kristaps 355: }
356:
357:
1.71 kristaps 358: static void
1.125 kristaps 359: spec(struct termp *p, const char *word, size_t len)
1.17 kristaps 360: {
1.71 kristaps 361: const char *rhs;
362: size_t sz;
1.17 kristaps 363:
1.101 kristaps 364: rhs = chars_a2ascii(p->symtab, word, len, &sz);
1.125 kristaps 365: if (rhs)
366: encode(p, rhs, sz);
1.94 kristaps 367: }
368:
369:
370: static void
1.125 kristaps 371: res(struct termp *p, const char *word, size_t len)
1.94 kristaps 372: {
373: const char *rhs;
374: size_t sz;
375:
1.101 kristaps 376: rhs = chars_a2res(p->symtab, word, len, &sz);
1.125 kristaps 377: if (rhs)
378: encode(p, rhs, sz);
379: }
380:
381:
382: void
383: term_fontlast(struct termp *p)
384: {
385: enum termfont f;
386:
387: f = p->fontl;
388: p->fontl = p->fontq[p->fonti];
389: p->fontq[p->fonti] = f;
390: }
391:
392:
393: void
394: term_fontrepl(struct termp *p, enum termfont f)
395: {
396:
397: p->fontl = p->fontq[p->fonti];
398: p->fontq[p->fonti] = f;
399: }
400:
401:
402: void
403: term_fontpush(struct termp *p, enum termfont f)
404: {
405:
406: assert(p->fonti + 1 < 10);
407: p->fontl = p->fontq[p->fonti];
408: p->fontq[++p->fonti] = f;
409: }
410:
411:
412: const void *
413: term_fontq(struct termp *p)
414: {
415:
416: return(&p->fontq[p->fonti]);
417: }
418:
419:
420: enum termfont
421: term_fonttop(struct termp *p)
422: {
423:
424: return(p->fontq[p->fonti]);
425: }
426:
427:
428: void
429: term_fontpopq(struct termp *p, const void *key)
430: {
431:
432: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
433: p->fonti--;
434: assert(p->fonti >= 0);
435: }
1.94 kristaps 436:
1.125 kristaps 437:
438: void
439: term_fontpop(struct termp *p)
440: {
441:
442: assert(p->fonti);
443: p->fonti--;
1.17 kristaps 444: }
445:
446:
1.71 kristaps 447: /*
448: * Handle pwords, partial words, which may be either a single word or a
449: * phrase that cannot be broken down (such as a literal string). This
450: * handles word styling.
451: */
1.86 kristaps 452: void
453: term_word(struct termp *p, const char *word)
1.65 kristaps 454: {
1.124 kristaps 455: const char *sv, *seq;
1.125 kristaps 456: int sz;
1.124 kristaps 457: size_t ssz;
458: enum roffdeco deco;
1.71 kristaps 459:
1.100 kristaps 460: sv = word;
461:
1.123 kristaps 462: if (word[0] && '\0' == word[1])
1.100 kristaps 463: switch (word[0]) {
464: case('.'):
465: /* FALLTHROUGH */
466: case(','):
467: /* FALLTHROUGH */
468: case(';'):
469: /* FALLTHROUGH */
470: case(':'):
471: /* FALLTHROUGH */
472: case('?'):
473: /* FALLTHROUGH */
474: case('!'):
475: /* FALLTHROUGH */
476: case(')'):
477: /* FALLTHROUGH */
478: case(']'):
479: if ( ! (TERMP_IGNDELIM & p->flags))
480: p->flags |= TERMP_NOSPACE;
481: break;
482: default:
483: break;
484: }
1.65 kristaps 485:
1.133 kristaps 486: if ( ! (TERMP_NOSPACE & p->flags)) {
1.151 schwarze 487: if ( ! (TERMP_KEEP & p->flags)) {
488: if (TERMP_PREKEEP & p->flags)
489: p->flags |= TERMP_KEEP;
1.133 kristaps 490: bufferc(p, ' ');
1.151 schwarze 491: if (TERMP_SENTENCE & p->flags)
492: bufferc(p, ' ');
493: } else
494: bufferc(p, ASCII_NBRSP);
1.133 kristaps 495: }
1.65 kristaps 496:
1.71 kristaps 497: if ( ! (p->flags & TERMP_NONOSPACE))
498: p->flags &= ~TERMP_NOSPACE;
1.133 kristaps 499:
500: p->flags &= ~TERMP_SENTENCE;
1.65 kristaps 501:
1.125 kristaps 502: /* FIXME: use strcspn. */
1.124 kristaps 503:
504: while (*word) {
505: if ('\\' != *word) {
1.125 kristaps 506: encode(p, word, 1);
1.124 kristaps 507: word++;
508: continue;
509: }
510:
511: seq = ++word;
512: sz = a2roffdeco(&deco, &seq, &ssz);
513:
514: switch (deco) {
515: case (DECO_RESERVED):
1.125 kristaps 516: res(p, seq, ssz);
1.124 kristaps 517: break;
518: case (DECO_SPECIAL):
1.125 kristaps 519: spec(p, seq, ssz);
1.124 kristaps 520: break;
521: case (DECO_BOLD):
1.125 kristaps 522: term_fontrepl(p, TERMFONT_BOLD);
1.124 kristaps 523: break;
524: case (DECO_ITALIC):
1.125 kristaps 525: term_fontrepl(p, TERMFONT_UNDER);
1.124 kristaps 526: break;
527: case (DECO_ROMAN):
1.125 kristaps 528: term_fontrepl(p, TERMFONT_NONE);
1.124 kristaps 529: break;
530: case (DECO_PREVIOUS):
1.125 kristaps 531: term_fontlast(p);
1.124 kristaps 532: break;
533: default:
534: break;
535: }
1.127 kristaps 536:
1.124 kristaps 537: word += sz;
1.127 kristaps 538: if (DECO_NOSPACE == deco && '\0' == *word)
539: p->flags |= TERMP_NOSPACE;
1.124 kristaps 540: }
1.65 kristaps 541:
1.131 kristaps 542: /*
543: * Note that we don't process the pipe: the parser sees it as
544: * punctuation, but we don't in terms of typography.
545: */
1.100 kristaps 546: if (sv[0] && 0 == sv[1])
547: switch (sv[0]) {
548: case('('):
549: /* FALLTHROUGH */
550: case('['):
551: p->flags |= TERMP_NOSPACE;
552: break;
553: default:
554: break;
555: }
1.65 kristaps 556: }
557:
558:
1.71 kristaps 559: static void
1.125 kristaps 560: adjbuf(struct termp *p, size_t sz)
1.51 kristaps 561: {
562:
1.125 kristaps 563: if (0 == p->maxcols)
564: p->maxcols = 1024;
565: while (sz >= p->maxcols)
566: p->maxcols <<= 2;
567:
568: p->buf = realloc(p->buf, p->maxcols);
569: if (NULL == p->buf) {
570: perror(NULL);
571: exit(EXIT_FAILURE);
1.71 kristaps 572: }
1.51 kristaps 573: }
574:
1.79 kristaps 575:
576: static void
1.125 kristaps 577: buffera(struct termp *p, const char *word, size_t sz)
1.79 kristaps 578: {
1.125 kristaps 579:
580: if (p->col + sz >= p->maxcols)
581: adjbuf(p, p->col + sz);
582:
1.126 kristaps 583: memcpy(&p->buf[(int)p->col], word, sz);
1.125 kristaps 584: p->col += sz;
585: }
586:
587:
588: static void
589: bufferc(struct termp *p, char c)
590: {
591:
592: if (p->col + 1 >= p->maxcols)
593: adjbuf(p, p->col + 1);
594:
1.126 kristaps 595: p->buf[(int)p->col++] = c;
1.125 kristaps 596: }
597:
598:
599: static void
600: encode(struct termp *p, const char *word, size_t sz)
601: {
602: enum termfont f;
603: int i;
604:
605: /*
606: * Encode and buffer a string of characters. If the current
607: * font mode is unset, buffer directly, else encode then buffer
608: * character by character.
609: */
610:
1.147 kristaps 611: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.125 kristaps 612: buffera(p, word, sz);
613: return;
614: }
615:
616: for (i = 0; i < (int)sz; i++) {
617: if ( ! isgraph((u_char)word[i])) {
618: bufferc(p, word[i]);
619: continue;
1.79 kristaps 620: }
1.125 kristaps 621:
622: if (TERMFONT_UNDER == f)
623: bufferc(p, '_');
624: else
625: bufferc(p, word[i]);
626:
627: bufferc(p, 8);
628: bufferc(p, word[i]);
1.79 kristaps 629: }
630: }
1.106 kristaps 631:
632:
1.107 kristaps 633: size_t
1.149 kristaps 634: term_len(const struct termp *p, size_t sz)
635: {
636:
637: return((*p->width)(p, ' ') * sz);
638: }
639:
640:
641: size_t
642: term_strlen(const struct termp *p, const char *cp)
643: {
644: size_t sz;
645:
646: for (sz = 0; *cp; cp++)
647: sz += (*p->width)(p, *cp);
648:
649: return(sz);
650: }
651:
652:
653: size_t
654: term_vspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 655: {
656: double r;
657:
1.107 kristaps 658: switch (su->unit) {
1.106 kristaps 659: case (SCALE_CM):
1.107 kristaps 660: r = su->scale * 2;
1.106 kristaps 661: break;
662: case (SCALE_IN):
1.107 kristaps 663: r = su->scale * 6;
1.106 kristaps 664: break;
665: case (SCALE_PC):
1.107 kristaps 666: r = su->scale;
1.106 kristaps 667: break;
668: case (SCALE_PT):
1.107 kristaps 669: r = su->scale / 8;
1.106 kristaps 670: break;
671: case (SCALE_MM):
1.107 kristaps 672: r = su->scale / 1000;
1.106 kristaps 673: break;
674: case (SCALE_VS):
1.107 kristaps 675: r = su->scale;
1.106 kristaps 676: break;
677: default:
1.107 kristaps 678: r = su->scale - 1;
1.106 kristaps 679: break;
680: }
681:
682: if (r < 0.0)
683: r = 0.0;
1.107 kristaps 684: return(/* LINTED */(size_t)
1.106 kristaps 685: r);
686: }
687:
688:
1.107 kristaps 689: size_t
1.149 kristaps 690: term_hspan(const struct termp *p, const struct roffsu *su)
1.106 kristaps 691: {
692: double r;
693:
1.108 kristaps 694: /* XXX: CM, IN, and PT are approximations. */
695:
1.107 kristaps 696: switch (su->unit) {
1.106 kristaps 697: case (SCALE_CM):
1.108 kristaps 698: r = 4 * su->scale;
1.106 kristaps 699: break;
700: case (SCALE_IN):
1.108 kristaps 701: /* XXX: this is an approximation. */
702: r = 10 * su->scale;
1.106 kristaps 703: break;
704: case (SCALE_PC):
1.108 kristaps 705: r = (10 * su->scale) / 6;
1.106 kristaps 706: break;
707: case (SCALE_PT):
1.108 kristaps 708: r = (10 * su->scale) / 72;
1.106 kristaps 709: break;
710: case (SCALE_MM):
1.107 kristaps 711: r = su->scale / 1000; /* FIXME: double-check. */
1.106 kristaps 712: break;
713: case (SCALE_VS):
1.107 kristaps 714: r = su->scale * 2 - 1; /* FIXME: double-check. */
1.106 kristaps 715: break;
716: default:
1.107 kristaps 717: r = su->scale;
1.106 kristaps 718: break;
719: }
720:
721: if (r < 0.0)
722: r = 0.0;
1.107 kristaps 723: return((size_t)/* LINTED */
1.106 kristaps 724: r);
725: }
726:
727:
CVSweb