Annotation of mandoc/term.c, Revision 1.130
1.130 ! kristaps 1: /* $Id: term.c,v 1.129 2010/03/23 12:42:22 kristaps Exp $ */
1.1 kristaps 2: /*
1.75 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
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>
1.22 kristaps 25: #include <stdio.h>
1.1 kristaps 26: #include <stdlib.h>
27: #include <string.h>
1.113 kristaps 28: #include <time.h>
1.1 kristaps 29:
1.101 kristaps 30: #include "chars.h"
1.107 kristaps 31: #include "out.h"
1.71 kristaps 32: #include "term.h"
33: #include "man.h"
34: #include "mdoc.h"
1.105 kristaps 35: #include "main.h"
1.1 kristaps 36:
1.71 kristaps 37: static struct termp *term_alloc(enum termenc);
38: static void term_free(struct termp *);
1.125 kristaps 39: static void spec(struct termp *, const char *, size_t);
40: static void res(struct termp *, const char *, size_t);
41: static void buffera(struct termp *, const char *, size_t);
42: static void bufferc(struct termp *, char);
43: static void adjbuf(struct termp *p, size_t);
44: static void encode(struct termp *, const char *, size_t);
1.1 kristaps 45:
46:
1.71 kristaps 47: void *
48: ascii_alloc(void)
1.10 kristaps 49: {
1.1 kristaps 50:
1.71 kristaps 51: return(term_alloc(TERMENC_ASCII));
1.1 kristaps 52: }
53:
54:
1.99 kristaps 55: void
1.71 kristaps 56: terminal_free(void *arg)
1.11 kristaps 57: {
58:
1.71 kristaps 59: term_free((struct termp *)arg);
1.11 kristaps 60: }
61:
62:
1.71 kristaps 63: static void
64: term_free(struct termp *p)
1.14 kristaps 65: {
66:
1.71 kristaps 67: if (p->buf)
68: free(p->buf);
1.102 kristaps 69: if (p->symtab)
1.101 kristaps 70: chars_free(p->symtab);
1.14 kristaps 71:
1.71 kristaps 72: free(p);
1.14 kristaps 73: }
74:
75:
1.71 kristaps 76: static struct termp *
77: term_alloc(enum termenc enc)
1.14 kristaps 78: {
1.71 kristaps 79: struct termp *p;
1.14 kristaps 80:
1.117 kristaps 81: p = calloc(1, sizeof(struct termp));
82: if (NULL == p) {
1.120 kristaps 83: perror(NULL);
1.117 kristaps 84: exit(EXIT_FAILURE);
85: }
1.71 kristaps 86: p->enc = enc;
87: return(p);
1.14 kristaps 88: }
89:
90:
1.71 kristaps 91: /*
92: * Flush a line of text. A "line" is loosely defined as being something
93: * that should be followed by a newline, regardless of whether it's
94: * broken apart by newlines getting there. A line can also be a
1.130 ! kristaps 95: * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
! 96: * not have a trailing newline.
1.71 kristaps 97: *
1.130 ! kristaps 98: * The following flags may be specified:
1.71 kristaps 99: *
100: * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
101: * offset value. This is useful when doing columnar lists where the
102: * prior column has right-padded.
103: *
104: * - TERMP_NOBREAK: this is the most important and is used when making
105: * columns. In short: don't print a newline and instead pad to the
106: * right margin. Used in conjunction with TERMP_NOLPAD.
107: *
1.91 kristaps 108: * - TERMP_TWOSPACE: when padding, make sure there are at least two
109: * space characters of padding. Otherwise, rather break the line.
110: *
1.84 kristaps 111: * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
112: * the line is overrun, and don't pad-right if it's underrun.
113: *
114: * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
115: * overruning, instead save the position and continue at that point
116: * when the next invocation.
1.71 kristaps 117: *
118: * In-line line breaking:
119: *
120: * If TERMP_NOBREAK is specified and the line overruns the right
121: * margin, it will break and pad-right to the right margin after
122: * writing. If maxrmargin is violated, it will break and continue
1.114 kristaps 123: * writing from the right-margin, which will lead to the above scenario
124: * upon exit. Otherwise, the line will break at the right margin.
1.71 kristaps 125: */
126: void
127: term_flushln(struct termp *p)
1.53 kristaps 128: {
1.114 kristaps 129: int i; /* current input position in p->buf */
130: size_t vis; /* current visual position on output */
131: size_t vbl; /* number of blanks to prepend to output */
132: size_t vsz; /* visual characters to write to output */
133: size_t bp; /* visual right border position */
1.130 ! kristaps 134: size_t hyph; /* visible position of hyphen */
1.114 kristaps 135: int j; /* temporary loop index */
136: size_t maxvis, mmax;
1.53 kristaps 137:
1.71 kristaps 138: /*
139: * First, establish the maximum columns of "visible" content.
140: * This is usually the difference between the right-margin and
141: * an indentation, but can be, for tagged lists or columns, a
1.115 kristaps 142: * small set of values.
1.71 kristaps 143: */
1.53 kristaps 144:
1.71 kristaps 145: assert(p->offset < p->rmargin);
1.92 kristaps 146:
1.129 kristaps 147: maxvis = (int)(p->rmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 148: /* LINTED */
1.129 kristaps 149: 0 : p->rmargin - p->offset - p->overstep;
150: mmax = (int)(p->maxrmargin - p->offset) - p->overstep < 0 ?
1.119 kristaps 151: /* LINTED */
1.129 kristaps 152: 0 : p->maxrmargin - p->offset - p->overstep;
1.92 kristaps 153:
1.71 kristaps 154: bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
1.115 kristaps 155:
156: /*
157: * FIXME: if bp is zero, we still output the first word before
158: * breaking the line.
159: */
160:
1.71 kristaps 161: vis = 0;
1.84 kristaps 162:
1.71 kristaps 163: /*
164: * If in the standard case (left-justified), then begin with our
165: * indentation, otherwise (columns, etc.) just start spitting
166: * out text.
167: */
1.53 kristaps 168:
1.71 kristaps 169: if ( ! (p->flags & TERMP_NOLPAD))
170: /* LINTED */
171: for (j = 0; j < (int)p->offset; j++)
172: putchar(' ');
173:
174: for (i = 0; i < (int)p->col; i++) {
175: /*
176: * Count up visible word characters. Control sequences
177: * (starting with the CSI) aren't counted. A space
178: * generates a non-printing word, which is valid (the
179: * space is printed according to regular spacing rules).
1.130 ! kristaps 180: * Collect the number of printable characters until the
! 181: * first hyphen, if found. Hyphens aren't included if
! 182: * they're the first character (so `Fl' doesn't break)
! 183: * or second consecutive character (`Fl -').
1.71 kristaps 184: */
185:
186: /* LINTED */
1.130 ! kristaps 187: for (j = i, vsz = 0, hyph = 0; j < (int)p->col; j++) {
1.93 kristaps 188: if (j && ' ' == p->buf[j])
1.71 kristaps 189: break;
1.130 ! kristaps 190: if (8 == p->buf[j])
1.89 kristaps 191: vsz--;
1.71 kristaps 192: else
193: vsz++;
1.130 ! kristaps 194: if (j > i && '-' == p->buf[j] && 0 == hyph)
! 195: if ('-' != p->buf[j - 1])
! 196: hyph = vsz;
1.71 kristaps 197: }
1.53 kristaps 198:
1.71 kristaps 199: /*
1.81 kristaps 200: * Choose the number of blanks to prepend: no blank at the
201: * beginning of a line, one between words -- but do not
202: * actually write them yet.
1.71 kristaps 203: */
1.130 ! kristaps 204:
1.81 kristaps 205: vbl = (size_t)(0 == vis ? 0 : 1);
1.71 kristaps 206:
1.81 kristaps 207: /*
208: * Find out whether we would exceed the right margin.
1.130 ! kristaps 209: * If so, break to the next line, possibly after
! 210: * emittign character up to a hyphen. Otherwise, write
! 211: * the chosen number of blanks.
1.81 kristaps 212: */
1.130 ! kristaps 213:
1.81 kristaps 214: if (vis && vis + vbl + vsz > bp) {
1.130 ! kristaps 215: /*
! 216: * Has a hyphen been found before the breakpoint
! 217: * that we can use?
! 218: */
! 219: if (hyph && vis + vbl + hyph <= bp) {
! 220: /* First prepend blanks. */
! 221: for (j = 0; j < (int)vbl; j++)
! 222: putchar(' ');
! 223:
! 224: /* Emit up to the character. */
! 225: do {
! 226: if (31 == p->buf[i])
! 227: putchar(' ');
! 228: else
! 229: putchar(p->buf[i]);
! 230: if (8 != p->buf[i])
! 231: vsz--;
! 232: } while ('-' != p->buf[i++]);
! 233:
! 234: /* Emit trailing decoration. */
! 235: if (8 == p->buf[i]) {
! 236: putchar(p->buf[i]);
! 237: putchar(p->buf[i + 1]);
! 238: }
! 239: }
! 240:
1.81 kristaps 241: putchar('\n');
242: if (TERMP_NOBREAK & p->flags) {
243: for (j = 0; j < (int)p->rmargin; j++)
244: putchar(' ');
245: vis = p->rmargin - p->offset;
246: } else {
1.71 kristaps 247: for (j = 0; j < (int)p->offset; j++)
248: putchar(' ');
249: vis = 0;
1.81 kristaps 250: }
1.130 ! kristaps 251:
1.129 kristaps 252: /* Remove the p->overstep width. */
1.130 ! kristaps 253:
1.112 kristaps 254: bp += (int)/* LINTED */
1.129 kristaps 255: p->overstep;
256: p->overstep = 0;
1.81 kristaps 257: } else {
258: for (j = 0; j < (int)vbl; j++)
1.71 kristaps 259: putchar(' ');
1.81 kristaps 260: vis += vbl;
1.71 kristaps 261: }
1.53 kristaps 262:
1.130 ! kristaps 263: /* Write out the [remaining] word. */
! 264: for ( ; i < (int)p->col; i++)
1.71 kristaps 265: if (' ' == p->buf[i])
266: break;
1.130 ! kristaps 267: else if (31 == p->buf[i])
1.121 kristaps 268: putchar(' ');
269: else
270: putchar(p->buf[i]);
1.130 ! kristaps 271:
1.71 kristaps 272: vis += vsz;
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)) {
279: putchar('\n');
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. */
1.129 kristaps 285: p->overstep = /* LINTED */
1.92 kristaps 286: vis - maxvis + 1;
1.91 kristaps 287:
288: /*
289: * Behave exactly the same way as groff:
1.92 kristaps 290: * If we have overstepped the margin, temporarily move
291: * it to the right and flag the rest of the line to be
292: * shorter.
1.91 kristaps 293: * If we landed right at the margin, be happy.
1.92 kristaps 294: * If we are one step before the margin, temporarily
295: * move it one step LEFT and flag the rest of the line
296: * to be longer.
1.91 kristaps 297: */
1.129 kristaps 298: if (p->overstep >= -1) {
299: assert((int)maxvis + p->overstep >= 0);
1.92 kristaps 300: /* LINTED */
1.129 kristaps 301: maxvis += p->overstep;
1.92 kristaps 302: } else
1.129 kristaps 303: p->overstep = 0;
1.91 kristaps 304:
305: } else if (TERMP_DANGLE & p->flags)
306: return;
1.15 kristaps 307:
1.92 kristaps 308: /* Right-pad. */
309: if (maxvis > vis + /* LINTED */
310: ((TERMP_TWOSPACE & p->flags) ? 1 : 0))
1.91 kristaps 311: for ( ; vis < maxvis; vis++)
312: putchar(' ');
1.92 kristaps 313: else { /* ...or newline break. */
1.71 kristaps 314: putchar('\n');
1.91 kristaps 315: for (i = 0; i < (int)p->rmargin; i++)
316: putchar(' ');
317: }
1.15 kristaps 318: }
319:
320:
1.71 kristaps 321: /*
322: * A newline only breaks an existing line; it won't assert vertical
323: * space. All data in the output buffer is flushed prior to the newline
324: * assertion.
325: */
326: void
327: term_newln(struct termp *p)
1.15 kristaps 328: {
329:
1.71 kristaps 330: p->flags |= TERMP_NOSPACE;
331: if (0 == p->col) {
332: p->flags &= ~TERMP_NOLPAD;
1.15 kristaps 333: return;
1.16 kristaps 334: }
1.71 kristaps 335: term_flushln(p);
336: p->flags &= ~TERMP_NOLPAD;
1.16 kristaps 337: }
338:
339:
1.71 kristaps 340: /*
341: * Asserts a vertical space (a full, empty line-break between lines).
342: * Note that if used twice, this will cause two blank spaces and so on.
343: * All data in the output buffer is flushed prior to the newline
344: * assertion.
345: */
346: void
347: term_vspace(struct termp *p)
1.16 kristaps 348: {
349:
1.62 kristaps 350: term_newln(p);
1.71 kristaps 351: putchar('\n');
1.16 kristaps 352: }
353:
354:
1.71 kristaps 355: static void
1.125 kristaps 356: spec(struct termp *p, const char *word, size_t len)
1.17 kristaps 357: {
1.71 kristaps 358: const char *rhs;
359: size_t sz;
1.17 kristaps 360:
1.101 kristaps 361: rhs = chars_a2ascii(p->symtab, word, len, &sz);
1.125 kristaps 362: if (rhs)
363: encode(p, rhs, sz);
1.94 kristaps 364: }
365:
366:
367: static void
1.125 kristaps 368: res(struct termp *p, const char *word, size_t len)
1.94 kristaps 369: {
370: const char *rhs;
371: size_t sz;
372:
1.101 kristaps 373: rhs = chars_a2res(p->symtab, word, len, &sz);
1.125 kristaps 374: if (rhs)
375: encode(p, rhs, sz);
376: }
377:
378:
379: void
380: term_fontlast(struct termp *p)
381: {
382: enum termfont f;
383:
384: f = p->fontl;
385: p->fontl = p->fontq[p->fonti];
386: p->fontq[p->fonti] = f;
387: }
388:
389:
390: void
391: term_fontrepl(struct termp *p, enum termfont f)
392: {
393:
394: p->fontl = p->fontq[p->fonti];
395: p->fontq[p->fonti] = f;
396: }
397:
398:
399: void
400: term_fontpush(struct termp *p, enum termfont f)
401: {
402:
403: assert(p->fonti + 1 < 10);
404: p->fontl = p->fontq[p->fonti];
405: p->fontq[++p->fonti] = f;
406: }
407:
408:
409: const void *
410: term_fontq(struct termp *p)
411: {
412:
413: return(&p->fontq[p->fonti]);
414: }
415:
416:
417: enum termfont
418: term_fonttop(struct termp *p)
419: {
420:
421: return(p->fontq[p->fonti]);
422: }
423:
424:
425: void
426: term_fontpopq(struct termp *p, const void *key)
427: {
428:
429: while (p->fonti >= 0 && key != &p->fontq[p->fonti])
430: p->fonti--;
431: assert(p->fonti >= 0);
432: }
1.94 kristaps 433:
1.125 kristaps 434:
435: void
436: term_fontpop(struct termp *p)
437: {
438:
439: assert(p->fonti);
440: p->fonti--;
1.17 kristaps 441: }
442:
443:
1.71 kristaps 444: /*
445: * Handle pwords, partial words, which may be either a single word or a
446: * phrase that cannot be broken down (such as a literal string). This
447: * handles word styling.
448: */
1.86 kristaps 449: void
450: term_word(struct termp *p, const char *word)
1.65 kristaps 451: {
1.124 kristaps 452: const char *sv, *seq;
1.125 kristaps 453: int sz;
1.124 kristaps 454: size_t ssz;
455: enum roffdeco deco;
1.71 kristaps 456:
1.100 kristaps 457: sv = word;
458:
1.123 kristaps 459: if (word[0] && '\0' == word[1])
1.100 kristaps 460: switch (word[0]) {
461: case('.'):
462: /* FALLTHROUGH */
463: case(','):
464: /* FALLTHROUGH */
465: case(';'):
466: /* FALLTHROUGH */
467: case(':'):
468: /* FALLTHROUGH */
469: case('?'):
470: /* FALLTHROUGH */
471: case('!'):
472: /* FALLTHROUGH */
473: case(')'):
474: /* FALLTHROUGH */
475: case(']'):
476: if ( ! (TERMP_IGNDELIM & p->flags))
477: p->flags |= TERMP_NOSPACE;
478: break;
479: default:
480: break;
481: }
1.65 kristaps 482:
1.71 kristaps 483: if ( ! (TERMP_NOSPACE & p->flags))
1.125 kristaps 484: bufferc(p, ' ');
1.65 kristaps 485:
1.71 kristaps 486: if ( ! (p->flags & TERMP_NONOSPACE))
487: p->flags &= ~TERMP_NOSPACE;
1.65 kristaps 488:
1.125 kristaps 489: /* FIXME: use strcspn. */
1.124 kristaps 490:
491: while (*word) {
492: if ('\\' != *word) {
1.125 kristaps 493: encode(p, word, 1);
1.124 kristaps 494: word++;
495: continue;
496: }
497:
498: seq = ++word;
499: sz = a2roffdeco(&deco, &seq, &ssz);
500:
501: switch (deco) {
502: case (DECO_RESERVED):
1.125 kristaps 503: res(p, seq, ssz);
1.124 kristaps 504: break;
505: case (DECO_SPECIAL):
1.125 kristaps 506: spec(p, seq, ssz);
1.124 kristaps 507: break;
508: case (DECO_BOLD):
1.125 kristaps 509: term_fontrepl(p, TERMFONT_BOLD);
1.124 kristaps 510: break;
511: case (DECO_ITALIC):
1.125 kristaps 512: term_fontrepl(p, TERMFONT_UNDER);
1.124 kristaps 513: break;
514: case (DECO_ROMAN):
1.125 kristaps 515: term_fontrepl(p, TERMFONT_NONE);
1.124 kristaps 516: break;
517: case (DECO_PREVIOUS):
1.125 kristaps 518: term_fontlast(p);
1.124 kristaps 519: break;
520: default:
521: break;
522: }
1.127 kristaps 523:
1.124 kristaps 524: word += sz;
1.127 kristaps 525: if (DECO_NOSPACE == deco && '\0' == *word)
526: p->flags |= TERMP_NOSPACE;
1.124 kristaps 527: }
1.65 kristaps 528:
1.100 kristaps 529: if (sv[0] && 0 == sv[1])
530: switch (sv[0]) {
1.130 ! kristaps 531: case('|'):
! 532: /* FALLTHROUGH */
1.100 kristaps 533: case('('):
534: /* FALLTHROUGH */
535: case('['):
536: p->flags |= TERMP_NOSPACE;
537: break;
538: default:
539: break;
540: }
1.65 kristaps 541: }
542:
543:
1.71 kristaps 544: static void
1.125 kristaps 545: adjbuf(struct termp *p, size_t sz)
1.51 kristaps 546: {
547:
1.125 kristaps 548: if (0 == p->maxcols)
549: p->maxcols = 1024;
550: while (sz >= p->maxcols)
551: p->maxcols <<= 2;
552:
553: p->buf = realloc(p->buf, p->maxcols);
554: if (NULL == p->buf) {
555: perror(NULL);
556: exit(EXIT_FAILURE);
1.71 kristaps 557: }
1.51 kristaps 558: }
559:
1.79 kristaps 560:
561: static void
1.125 kristaps 562: buffera(struct termp *p, const char *word, size_t sz)
1.79 kristaps 563: {
1.125 kristaps 564:
565: if (p->col + sz >= p->maxcols)
566: adjbuf(p, p->col + sz);
567:
1.126 kristaps 568: memcpy(&p->buf[(int)p->col], word, sz);
1.125 kristaps 569: p->col += sz;
570: }
571:
572:
573: static void
574: bufferc(struct termp *p, char c)
575: {
576:
577: if (p->col + 1 >= p->maxcols)
578: adjbuf(p, p->col + 1);
579:
1.126 kristaps 580: p->buf[(int)p->col++] = c;
1.125 kristaps 581: }
582:
583:
584: static void
585: encode(struct termp *p, const char *word, size_t sz)
586: {
587: enum termfont f;
588: int i;
589:
590: /*
591: * Encode and buffer a string of characters. If the current
592: * font mode is unset, buffer directly, else encode then buffer
593: * character by character.
594: */
595:
596: if (TERMFONT_NONE == (f = term_fonttop(p))) {
597: buffera(p, word, sz);
598: return;
599: }
600:
601: for (i = 0; i < (int)sz; i++) {
602: if ( ! isgraph((u_char)word[i])) {
603: bufferc(p, word[i]);
604: continue;
1.79 kristaps 605: }
1.125 kristaps 606:
607: if (TERMFONT_UNDER == f)
608: bufferc(p, '_');
609: else
610: bufferc(p, word[i]);
611:
612: bufferc(p, 8);
613: bufferc(p, word[i]);
1.79 kristaps 614: }
615: }
1.106 kristaps 616:
617:
1.107 kristaps 618: size_t
619: term_vspan(const struct roffsu *su)
1.106 kristaps 620: {
621: double r;
622:
1.107 kristaps 623: switch (su->unit) {
1.106 kristaps 624: case (SCALE_CM):
1.107 kristaps 625: r = su->scale * 2;
1.106 kristaps 626: break;
627: case (SCALE_IN):
1.107 kristaps 628: r = su->scale * 6;
1.106 kristaps 629: break;
630: case (SCALE_PC):
1.107 kristaps 631: r = su->scale;
1.106 kristaps 632: break;
633: case (SCALE_PT):
1.107 kristaps 634: r = su->scale / 8;
1.106 kristaps 635: break;
636: case (SCALE_MM):
1.107 kristaps 637: r = su->scale / 1000;
1.106 kristaps 638: break;
639: case (SCALE_VS):
1.107 kristaps 640: r = su->scale;
1.106 kristaps 641: break;
642: default:
1.107 kristaps 643: r = su->scale - 1;
1.106 kristaps 644: break;
645: }
646:
647: if (r < 0.0)
648: r = 0.0;
1.107 kristaps 649: return(/* LINTED */(size_t)
1.106 kristaps 650: r);
651: }
652:
653:
1.107 kristaps 654: size_t
655: term_hspan(const struct roffsu *su)
1.106 kristaps 656: {
657: double r;
658:
1.108 kristaps 659: /* XXX: CM, IN, and PT are approximations. */
660:
1.107 kristaps 661: switch (su->unit) {
1.106 kristaps 662: case (SCALE_CM):
1.108 kristaps 663: r = 4 * su->scale;
1.106 kristaps 664: break;
665: case (SCALE_IN):
1.108 kristaps 666: /* XXX: this is an approximation. */
667: r = 10 * su->scale;
1.106 kristaps 668: break;
669: case (SCALE_PC):
1.108 kristaps 670: r = (10 * su->scale) / 6;
1.106 kristaps 671: break;
672: case (SCALE_PT):
1.108 kristaps 673: r = (10 * su->scale) / 72;
1.106 kristaps 674: break;
675: case (SCALE_MM):
1.107 kristaps 676: r = su->scale / 1000; /* FIXME: double-check. */
1.106 kristaps 677: break;
678: case (SCALE_VS):
1.107 kristaps 679: r = su->scale * 2 - 1; /* FIXME: double-check. */
1.106 kristaps 680: break;
681: default:
1.107 kristaps 682: r = su->scale;
1.106 kristaps 683: break;
684: }
685:
686: if (r < 0.0)
687: r = 0.0;
1.107 kristaps 688: return((size_t)/* LINTED */
1.106 kristaps 689: r);
690: }
691:
692:
CVSweb