Annotation of src/usr.bin/mandoc/term.c, Revision 1.41
1.41 ! schwarze 1: /* $Id: term.c,v 1.40 2010/06/27 01:24:02 schwarze Exp $ */
1.1 kristaps 2: /*
1.38 schwarze 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
1.2 schwarze 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: *
1.2 schwarze 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: */
1.20 schwarze 17: #include <sys/types.h>
18:
1.1 kristaps 19: #include <assert.h>
1.20 schwarze 20: #include <ctype.h>
1.36 schwarze 21: #include <stdint.h>
1.1 kristaps 22: #include <stdio.h>
23: #include <stdlib.h>
24: #include <string.h>
25:
1.34 schwarze 26: #include "mandoc.h"
1.15 schwarze 27: #include "chars.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:
1.20 schwarze 32: static void spec(struct termp *, const char *, size_t);
33: static void res(struct termp *, const char *, size_t);
34: static void buffera(struct termp *, const char *, size_t);
35: static void bufferc(struct termp *, char);
36: static void adjbuf(struct termp *p, size_t);
37: static void encode(struct termp *, const char *, size_t);
1.1 kristaps 38:
39:
1.37 schwarze 40: void
41: term_free(struct termp *p)
1.1 kristaps 42: {
43:
1.37 schwarze 44: if (p->buf)
45: free(p->buf);
46: if (p->symtab)
47: chars_free(p->symtab);
48:
49: free(p);
1.1 kristaps 50: }
51:
52:
1.13 schwarze 53: void
1.37 schwarze 54: term_begin(struct termp *p, term_margin head,
55: term_margin foot, const void *arg)
1.1 kristaps 56: {
57:
1.37 schwarze 58: p->headf = head;
59: p->footf = foot;
60: p->argf = arg;
61: (*p->begin)(p);
1.1 kristaps 62: }
63:
64:
1.37 schwarze 65: void
66: term_end(struct termp *p)
1.1 kristaps 67: {
68:
1.37 schwarze 69: (*p->end)(p);
1.1 kristaps 70: }
71:
72:
1.37 schwarze 73: struct termp *
74: term_alloc(enum termenc enc)
1.1 kristaps 75: {
1.36 schwarze 76: struct termp *p;
1.1 kristaps 77:
1.19 schwarze 78: p = calloc(1, sizeof(struct termp));
79: if (NULL == p) {
80: perror(NULL);
81: exit(EXIT_FAILURE);
82: }
1.36 schwarze 83:
1.1 kristaps 84: p->enc = enc;
85: return(p);
86: }
87:
88:
89: /*
90: * Flush a line of text. A "line" is loosely defined as being something
91: * that should be followed by a newline, regardless of whether it's
92: * broken apart by newlines getting there. A line can also be a
1.27 schwarze 93: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
94: * not have a trailing newline.
1.1 kristaps 95: *
1.27 schwarze 96: * The following flags may be specified:
1.1 kristaps 97: *
98: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
99: * offset value. This is useful when doing columnar lists where the
100: * prior column has right-padded.
101: *
102: * - TERMP_NOBREAK: this is the most important and is used when making
103: * columns. In short: don't print a newline and instead pad to the
104: * right margin. Used in conjunction with TERMP_NOLPAD.
105: *
1.9 schwarze 106: * - TERMP_TWOSPACE: when padding, make sure there are at least two
107: * space characters of padding. Otherwise, rather break the line.
108: *
1.6 schwarze 109: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
110: * the line is overrun, and don't pad-right if it's underrun.
111: *
112: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
113: * overruning, instead save the position and continue at that point
114: * when the next invocation.
1.1 kristaps 115: *
116: * In-line line breaking:
117: *
118: * If TERMP_NOBREAK is specified and the line overruns the right
119: * margin, it will break and pad-right to the right margin after
120: * writing. If maxrmargin is violated, it will break and continue
1.19 schwarze 121: * writing from the right-margin, which will lead to the above scenario
122: * upon exit. Otherwise, the line will break at the right margin.
1.1 kristaps 123: */
124: void
125: term_flushln(struct termp *p)
126: {
1.19 schwarze 127: int i; /* current input position in p->buf */
128: size_t vis; /* current visual position on output */
129: size_t vbl; /* number of blanks to prepend to output */
1.33 schwarze 130: size_t vend; /* end of word visual position on output */
1.19 schwarze 131: size_t bp; /* visual right border position */
132: int j; /* temporary loop index */
1.22 schwarze 133: int jhy; /* last hyphen before line overflow */
1.19 schwarze 134: size_t maxvis, mmax;
1.1 kristaps 135:
136: /*
137: * First, establish the maximum columns of "visible" content.
138: * This is usually the difference between the right-margin and
139: * an indentation, but can be, for tagged lists or columns, a
1.19 schwarze 140: * small set of values.
1.1 kristaps 141: */
142:
143: assert(p->offset < p->rmargin);
1.9 schwarze 144:
1.26 schwarze 145: maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ?
1.19 schwarze 146: /* LINTED */
1.26 schwarze 147: 0 : p->rmargin - p->offset - p->overstep;
148: mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ?
1.19 schwarze 149: /* LINTED */
1.26 schwarze 150: 0 : p->maxrmargin - p->offset - p->overstep;
1.9 schwarze 151:
1.1 kristaps 152: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.19 schwarze 153:
1.33 schwarze 154: /*
155: * Indent the first line of a paragraph.
156: */
157: vbl = p->flags & TERMP_NOLPAD ? 0 : p->offset;
158:
1.19 schwarze 159: /*
160: * FIXME: if bp is zero, we still output the first word before
161: * breaking the line.
162: */
163:
1.33 schwarze 164: vis = vend = i = 0;
1.22 schwarze 165: while (i < (int)p->col) {
166:
167: /*
1.30 schwarze 168: * Handle literal tab characters.
169: */
170: for (j = i; j < (int)p->col; j++) {
171: if ('\t' != p->buf[j])
172: break;
1.33 schwarze 173: vend = (vis/p->tabwidth+1)*p->tabwidth;
1.30 schwarze 174: vbl += vend - vis;
175: vis = vend;
176: }
1.22 schwarze 177:
1.1 kristaps 178: /*
179: * Count up visible word characters. Control sequences
180: * (starting with the CSI) aren't counted. A space
181: * generates a non-printing word, which is valid (the
182: * space is printed according to regular spacing rules).
183: */
184:
185: /* LINTED */
1.30 schwarze 186: for (jhy = 0; j < (int)p->col; j++) {
187: if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
1.1 kristaps 188: break;
1.35 schwarze 189: if (8 != p->buf[j]) {
1.22 schwarze 190: if (vend > vis && vend < bp &&
1.35 schwarze 191: ASCII_HYPH == p->buf[j])
1.22 schwarze 192: jhy = j;
193: vend++;
1.35 schwarze 194: } else
195: vend--;
1.1 kristaps 196: }
197:
198: /*
1.5 schwarze 199: * Find out whether we would exceed the right margin.
1.33 schwarze 200: * If so, break to the next line.
1.5 schwarze 201: */
1.33 schwarze 202: if (vend > bp && 0 == jhy && vis > 0) {
1.22 schwarze 203: vend -= vis;
1.37 schwarze 204: (*p->endline)(p);
1.5 schwarze 205: if (TERMP_NOBREAK & p->flags) {
1.29 schwarze 206: p->viscol = p->rmargin;
1.37 schwarze 207: (*p->advance)(p, p->rmargin);
1.22 schwarze 208: vend += p->rmargin - p->offset;
1.5 schwarze 209: } else {
1.33 schwarze 210: p->viscol = 0;
211: vbl = p->offset;
1.5 schwarze 212: }
1.33 schwarze 213:
1.26 schwarze 214: /* Remove the p->overstep width. */
1.33 schwarze 215:
1.18 schwarze 216: bp += (int)/* LINTED */
1.26 schwarze 217: p->overstep;
218: p->overstep = 0;
1.1 kristaps 219: }
220:
1.3 schwarze 221: /*
1.30 schwarze 222: * Skip leading tabs, they were handled above.
223: */
224: while (i < (int)p->col && '\t' == p->buf[i])
225: i++;
226:
1.33 schwarze 227: /* Write out the [remaining] word. */
1.1 kristaps 228: for ( ; i < (int)p->col; i++) {
1.25 schwarze 229: if (vend > bp && jhy > 0 && i > jhy)
1.30 schwarze 230: break;
231: if ('\t' == p->buf[i])
1.1 kristaps 232: break;
1.22 schwarze 233: if (' ' == p->buf[i]) {
1.33 schwarze 234: while (' ' == p->buf[i]) {
235: vbl++;
236: i++;
237: }
1.22 schwarze 238: break;
239: }
1.33 schwarze 240: if (ASCII_NBRSP == p->buf[i]) {
241: vbl++;
242: continue;
243: }
244:
245: /*
246: * Now we definitely know there will be
247: * printable characters to output,
248: * so write preceding white space now.
249: */
250: if (vbl) {
1.37 schwarze 251: (*p->advance)(p, vbl);
1.33 schwarze 252: p->viscol += vbl;
253: vbl = 0;
254: }
1.35 schwarze 255:
256: if (ASCII_HYPH == p->buf[i])
1.37 schwarze 257: (*p->letter)(p, '-');
1.35 schwarze 258: else
1.37 schwarze 259: (*p->letter)(p, p->buf[i]);
1.35 schwarze 260:
1.33 schwarze 261: p->viscol += 1;
1.1 kristaps 262: }
1.33 schwarze 263: vend += vbl;
1.22 schwarze 264: vis = vend;
1.1 kristaps 265: }
1.18 schwarze 266:
1.9 schwarze 267: p->col = 0;
1.26 schwarze 268: p->overstep = 0;
1.1 kristaps 269:
1.9 schwarze 270: if ( ! (TERMP_NOBREAK & p->flags)) {
1.29 schwarze 271: p->viscol = 0;
1.37 schwarze 272: (*p->endline)(p);
1.1 kristaps 273: return;
274: }
275:
1.9 schwarze 276: if (TERMP_HANG & p->flags) {
277: /* We need one blank after the tag. */
1.26 schwarze 278: p->overstep = /* LINTED */
1.9 schwarze 279: vis - maxvis + 1;
280:
281: /*
282: * Behave exactly the same way as groff:
283: * If we have overstepped the margin, temporarily move
284: * it to the right and flag the rest of the line to be
285: * shorter.
286: * If we landed right at the margin, be happy.
287: * If we are one step before the margin, temporarily
288: * move it one step LEFT and flag the rest of the line
289: * to be longer.
290: */
1.26 schwarze 291: if (p->overstep >= -1) {
292: assert((int)maxvis + p->overstep >= 0);
1.9 schwarze 293: /* LINTED */
1.26 schwarze 294: maxvis += p->overstep;
1.9 schwarze 295: } else
1.26 schwarze 296: p->overstep = 0;
1.9 schwarze 297:
298: } else if (TERMP_DANGLE & p->flags)
299: return;
1.1 kristaps 300:
1.9 schwarze 301: /* Right-pad. */
302: if (maxvis > vis + /* LINTED */
1.29 schwarze 303: ((TERMP_TWOSPACE & p->flags) ? 1 : 0)) {
304: p->viscol += maxvis - vis;
1.37 schwarze 305: (*p->advance)(p, maxvis - vis);
306: vis += (maxvis - vis);
1.29 schwarze 307: } else { /* ...or newline break. */
1.37 schwarze 308: (*p->endline)(p);
1.29 schwarze 309: p->viscol = p->rmargin;
1.37 schwarze 310: (*p->advance)(p, p->rmargin);
1.9 schwarze 311: }
1.1 kristaps 312: }
313:
314:
315: /*
316: * A newline only breaks an existing line; it won't assert vertical
317: * space. All data in the output buffer is flushed prior to the newline
318: * assertion.
319: */
320: void
321: term_newln(struct termp *p)
322: {
323:
324: p->flags |= TERMP_NOSPACE;
1.29 schwarze 325: if (0 == p->col && 0 == p->viscol) {
1.1 kristaps 326: p->flags &= ~TERMP_NOLPAD;
327: return;
328: }
329: term_flushln(p);
330: p->flags &= ~TERMP_NOLPAD;
331: }
332:
333:
334: /*
335: * Asserts a vertical space (a full, empty line-break between lines).
336: * Note that if used twice, this will cause two blank spaces and so on.
337: * All data in the output buffer is flushed prior to the newline
338: * assertion.
339: */
340: void
341: term_vspace(struct termp *p)
342: {
343:
344: term_newln(p);
1.29 schwarze 345: p->viscol = 0;
1.37 schwarze 346: (*p->endline)(p);
1.1 kristaps 347: }
348:
349:
350: static void
1.20 schwarze 351: spec(struct termp *p, const char *word, size_t len)
1.1 kristaps 352: {
353: const char *rhs;
354: size_t sz;
355:
1.15 schwarze 356: rhs = chars_a2ascii(p->symtab, word, len, &sz);
1.20 schwarze 357: if (rhs)
358: encode(p, rhs, sz);
1.11 schwarze 359: }
360:
361:
362: static void
1.20 schwarze 363: res(struct termp *p, const char *word, size_t len)
1.11 schwarze 364: {
365: const char *rhs;
366: size_t sz;
367:
1.15 schwarze 368: rhs = chars_a2res(p->symtab, word, len, &sz);
1.20 schwarze 369: if (rhs)
370: encode(p, rhs, sz);
371: }
372:
373:
374: void
375: term_fontlast(struct termp *p)
376: {
377: enum termfont f;
1.11 schwarze 378:
1.20 schwarze 379: f = p->fontl;
380: p->fontl = p->fontq[p->fonti];
381: p->fontq[p->fonti] = f;
382: }
383:
384:
385: void
386: term_fontrepl(struct termp *p, enum termfont f)
387: {
388:
389: p->fontl = p->fontq[p->fonti];
390: p->fontq[p->fonti] = f;
1.1 kristaps 391: }
392:
393:
1.20 schwarze 394: void
395: term_fontpush(struct termp *p, enum termfont f)
1.1 kristaps 396: {
1.7 schwarze 397:
1.20 schwarze 398: assert(p->fonti + 1 < 10);
399: p->fontl = p->fontq[p->fonti];
400: p->fontq[++p->fonti] = f;
401: }
1.1 kristaps 402:
403:
1.20 schwarze 404: const void *
405: term_fontq(struct termp *p)
406: {
1.1 kristaps 407:
1.20 schwarze 408: return(&p->fontq[p->fonti]);
409: }
1.1 kristaps 410:
411:
1.20 schwarze 412: enum termfont
413: term_fonttop(struct termp *p)
414: {
1.1 kristaps 415:
1.20 schwarze 416: return(p->fontq[p->fonti]);
417: }
1.7 schwarze 418:
419:
1.20 schwarze 420: void
421: term_fontpopq(struct termp *p, const void *key)
422: {
1.1 kristaps 423:
1.20 schwarze 424: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
425: p->fonti--;
426: assert(p->fonti >= 0);
427: }
1.1 kristaps 428:
429:
1.20 schwarze 430: void
431: term_fontpop(struct termp *p)
432: {
1.1 kristaps 433:
1.20 schwarze 434: assert(p->fonti);
435: p->fonti--;
1.1 kristaps 436: }
437:
438:
439: /*
440: * Handle pwords, partial words, which may be either a single word or a
441: * phrase that cannot be broken down (such as a literal string). This
442: * handles word styling.
443: */
1.7 schwarze 444: void
445: term_word(struct termp *p, const char *word)
1.1 kristaps 446: {
1.20 schwarze 447: const char *sv, *seq;
448: int sz;
449: size_t ssz;
450: enum roffdeco deco;
1.1 kristaps 451:
1.14 schwarze 452: sv = word;
453:
1.20 schwarze 454: if (word[0] && '\0' == word[1])
1.14 schwarze 455: switch (word[0]) {
456: case('.'):
457: /* FALLTHROUGH */
458: case(','):
459: /* FALLTHROUGH */
460: case(';'):
461: /* FALLTHROUGH */
462: case(':'):
463: /* FALLTHROUGH */
464: case('?'):
465: /* FALLTHROUGH */
466: case('!'):
467: /* FALLTHROUGH */
468: case(')'):
469: /* FALLTHROUGH */
470: case(']'):
471: if ( ! (TERMP_IGNDELIM & p->flags))
472: p->flags |= TERMP_NOSPACE;
473: break;
474: default:
475: break;
476: }
1.1 kristaps 477:
1.31 schwarze 478: if ( ! (TERMP_NOSPACE & p->flags)) {
1.40 schwarze 479: if ( ! (TERMP_KEEP & p->flags)) {
480: if (TERMP_PREKEEP & p->flags)
481: p->flags |= TERMP_KEEP;
1.31 schwarze 482: bufferc(p, ' ');
1.40 schwarze 483: if (TERMP_SENTENCE & p->flags)
484: bufferc(p, ' ');
485: } else
486: bufferc(p, ASCII_NBRSP);
1.31 schwarze 487: }
1.1 kristaps 488:
489: if ( ! (p->flags & TERMP_NONOSPACE))
490: p->flags &= ~TERMP_NOSPACE;
491:
1.31 schwarze 492: p->flags &= ~TERMP_SENTENCE;
493:
1.20 schwarze 494: /* FIXME: use strcspn. */
495:
496: while (*word) {
497: if ('\\' != *word) {
498: encode(p, word, 1);
499: word++;
500: continue;
501: }
502:
503: seq = ++word;
504: sz = a2roffdeco(&deco, &seq, &ssz);
505:
506: switch (deco) {
507: case (DECO_RESERVED):
508: res(p, seq, ssz);
509: break;
510: case (DECO_SPECIAL):
511: spec(p, seq, ssz);
512: break;
513: case (DECO_BOLD):
514: term_fontrepl(p, TERMFONT_BOLD);
515: break;
516: case (DECO_ITALIC):
517: term_fontrepl(p, TERMFONT_UNDER);
518: break;
519: case (DECO_ROMAN):
520: term_fontrepl(p, TERMFONT_NONE);
521: break;
522: case (DECO_PREVIOUS):
523: term_fontlast(p);
524: break;
525: default:
526: break;
527: }
528:
529: word += sz;
530: if (DECO_NOSPACE == deco && '\0' == *word)
531: p->flags |= TERMP_NOSPACE;
532: }
1.1 kristaps 533:
1.31 schwarze 534: /*
535: * Note that we don't process the pipe: the parser sees it as
536: * punctuation, but we don't in terms of typography.
537: */
1.14 schwarze 538: if (sv[0] && 0 == sv[1])
539: switch (sv[0]) {
540: case('('):
541: /* FALLTHROUGH */
542: case('['):
543: p->flags |= TERMP_NOSPACE;
544: break;
545: default:
546: break;
547: }
1.1 kristaps 548: }
549:
550:
551: static void
1.20 schwarze 552: adjbuf(struct termp *p, size_t sz)
1.1 kristaps 553: {
554:
1.20 schwarze 555: if (0 == p->maxcols)
556: p->maxcols = 1024;
557: while (sz >= p->maxcols)
558: p->maxcols <<= 2;
559:
560: p->buf = realloc(p->buf, p->maxcols);
561: if (NULL == p->buf) {
562: perror(NULL);
563: exit(EXIT_FAILURE);
1.1 kristaps 564: }
565: }
566:
1.4 schwarze 567:
568: static void
1.20 schwarze 569: buffera(struct termp *p, const char *word, size_t sz)
570: {
571:
572: if (p->col + sz >= p->maxcols)
573: adjbuf(p, p->col + sz);
574:
575: memcpy(&p->buf[(int)p->col], word, sz);
576: p->col += sz;
577: }
578:
579:
580: static void
581: bufferc(struct termp *p, char c)
582: {
583:
584: if (p->col + 1 >= p->maxcols)
585: adjbuf(p, p->col + 1);
586:
587: p->buf[(int)p->col++] = c;
588: }
589:
590:
591: static void
592: encode(struct termp *p, const char *word, size_t sz)
1.4 schwarze 593: {
1.20 schwarze 594: enum termfont f;
595: int i;
596:
597: /*
598: * Encode and buffer a string of characters. If the current
599: * font mode is unset, buffer directly, else encode then buffer
600: * character by character.
601: */
602:
1.38 schwarze 603: if (TERMFONT_NONE == (f = term_fonttop(p))) {
1.20 schwarze 604: buffera(p, word, sz);
605: return;
606: }
607:
608: for (i = 0; i < (int)sz; i++) {
609: if ( ! isgraph((u_char)word[i])) {
610: bufferc(p, word[i]);
611: continue;
1.4 schwarze 612: }
1.20 schwarze 613:
614: if (TERMFONT_UNDER == f)
615: bufferc(p, '_');
616: else
617: bufferc(p, word[i]);
618:
619: bufferc(p, 8);
620: bufferc(p, word[i]);
1.4 schwarze 621: }
622: }
1.16 schwarze 623:
624:
625: size_t
1.39 schwarze 626: term_len(const struct termp *p, size_t sz)
627: {
628:
629: return((*p->width)(p, ' ') * sz);
630: }
631:
632:
633: size_t
634: term_strlen(const struct termp *p, const char *cp)
635: {
636: size_t sz;
637:
638: for (sz = 0; *cp; cp++)
639: sz += (*p->width)(p, *cp);
640:
641: return(sz);
642: }
643:
644:
645: size_t
646: term_vspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 647: {
648: double r;
649:
650: switch (su->unit) {
651: case (SCALE_CM):
652: r = su->scale * 2;
653: break;
654: case (SCALE_IN):
655: r = su->scale * 6;
656: break;
657: case (SCALE_PC):
658: r = su->scale;
659: break;
660: case (SCALE_PT):
661: r = su->scale / 8;
662: break;
663: case (SCALE_MM):
664: r = su->scale / 1000;
665: break;
666: case (SCALE_VS):
667: r = su->scale;
668: break;
669: default:
670: r = su->scale - 1;
671: break;
672: }
673:
674: if (r < 0.0)
675: r = 0.0;
676: return(/* LINTED */(size_t)
677: r);
678: }
679:
680:
681: size_t
1.39 schwarze 682: term_hspan(const struct termp *p, const struct roffsu *su)
1.16 schwarze 683: {
684: double r;
685:
686: /* XXX: CM, IN, and PT are approximations. */
687:
688: switch (su->unit) {
689: case (SCALE_CM):
690: r = 4 * su->scale;
691: break;
692: case (SCALE_IN):
693: /* XXX: this is an approximation. */
694: r = 10 * su->scale;
695: break;
696: case (SCALE_PC):
697: r = (10 * su->scale) / 6;
698: break;
699: case (SCALE_PT):
700: r = (10 * su->scale) / 72;
701: break;
702: case (SCALE_MM):
703: r = su->scale / 1000; /* FIXME: double-check. */
704: break;
705: case (SCALE_VS):
706: r = su->scale * 2 - 1; /* FIXME: double-check. */
707: break;
708: default:
709: r = su->scale;
710: break;
711: }
712:
713: if (r < 0.0)
714: r = 0.0;
715: return((size_t)/* LINTED */
716: r);
717: }
718:
719:
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