Annotation of mandoc/mandoc.c, Revision 1.56
1.56 ! kristaps 1: /* $Id: mandoc.c,v 1.55 2011/07/21 23:30:39 kristaps Exp $ */
1.1 kristaps 2: /*
1.22 kristaps 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.36 schwarze 4: * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.36 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.36 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 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.
17: */
1.9 kristaps 18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
1.7 kristaps 20: #endif
21:
1.2 kristaps 22: #include <sys/types.h>
23:
1.1 kristaps 24: #include <assert.h>
25: #include <ctype.h>
1.50 kristaps 26: #include <errno.h>
27: #include <limits.h>
1.1 kristaps 28: #include <stdlib.h>
1.4 kristaps 29: #include <stdio.h>
30: #include <string.h>
1.7 kristaps 31: #include <time.h>
1.1 kristaps 32:
1.18 kristaps 33: #include "mandoc.h"
1.1 kristaps 34: #include "libmandoc.h"
35:
1.37 schwarze 36: #define DATESIZE 32
37:
1.18 kristaps 38: static int a2time(time_t *, const char *, const char *);
1.37 schwarze 39: static char *time2a(time_t);
1.45 kristaps 40: static int numescape(const char *);
1.7 kristaps 41:
1.45 kristaps 42: /*
43: * Pass over recursive numerical expressions. This context of this
44: * function is important: it's only called within character-terminating
45: * escapes (e.g., \s[xxxyyy]), so all we need to do is handle initial
46: * recursion: we don't care about what's in these blocks.
47: * This returns the number of characters skipped or -1 if an error
48: * occurs (the caller should bail).
49: */
50: static int
51: numescape(const char *start)
52: {
53: int i;
54: size_t sz;
55: const char *cp;
56:
57: i = 0;
58:
59: /* The expression consists of a subexpression. */
60:
61: if ('\\' == start[i]) {
62: cp = &start[++i];
63: /*
64: * Read past the end of the subexpression.
65: * Bail immediately on errors.
66: */
67: if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
68: return(-1);
69: return(i + cp - &start[i]);
70: }
71:
72: if ('(' != start[i++])
73: return(0);
74:
75: /*
76: * A parenthesised subexpression. Read until the closing
77: * parenthesis, making sure to handle any nested subexpressions
78: * that might ruin our parse.
79: */
80:
81: while (')' != start[i]) {
82: sz = strcspn(&start[i], ")\\");
83: i += (int)sz;
84:
85: if ('\0' == start[i])
86: return(-1);
87: else if ('\\' != start[i])
88: continue;
89:
90: cp = &start[++i];
91: if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
92: return(-1);
93: i += cp - &start[i];
94: }
95:
96: /* Read past the terminating ')'. */
97: return(++i);
98: }
99:
100: enum mandoc_esc
101: mandoc_escape(const char **end, const char **start, int *sz)
1.1 kristaps 102: {
1.45 kristaps 103: char c, term, numeric;
104: int i, lim, ssz, rlim;
105: const char *cp, *rstart;
106: enum mandoc_esc gly;
107:
108: cp = *end;
109: rstart = cp;
110: if (start)
111: *start = rstart;
1.46 kristaps 112: i = lim = 0;
1.45 kristaps 113: gly = ESCAPE_ERROR;
1.46 kristaps 114: term = numeric = '\0';
1.18 kristaps 115:
1.45 kristaps 116: switch ((c = cp[i++])) {
117: /*
118: * First the glyphs. There are several different forms of
119: * these, but each eventually returns a substring of the glyph
120: * name.
121: */
122: case ('('):
123: gly = ESCAPE_SPECIAL;
124: lim = 2;
125: break;
126: case ('['):
127: gly = ESCAPE_SPECIAL;
1.52 kristaps 128: /*
129: * Unicode escapes are defined in groff as \[uXXXX] to
130: * \[u10FFFF], where the contained value must be a valid
131: * Unicode codepoint. Here, however, only check whether
132: * it's not a zero-width escape.
133: */
134: if ('u' == cp[i] && ']' != cp[i + 1])
135: gly = ESCAPE_UNICODE;
1.45 kristaps 136: term = ']';
137: break;
138: case ('C'):
139: if ('\'' != cp[i])
140: return(ESCAPE_ERROR);
141: gly = ESCAPE_SPECIAL;
142: term = '\'';
143: break;
1.1 kristaps 144:
1.45 kristaps 145: /*
146: * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
147: * 'X' is the trigger. These have opaque sub-strings.
148: */
149: case ('F'):
150: /* FALLTHROUGH */
151: case ('g'):
1.24 kristaps 152: /* FALLTHROUGH */
1.45 kristaps 153: case ('k'):
1.24 kristaps 154: /* FALLTHROUGH */
1.45 kristaps 155: case ('M'):
1.24 kristaps 156: /* FALLTHROUGH */
1.45 kristaps 157: case ('m'):
1.24 kristaps 158: /* FALLTHROUGH */
1.45 kristaps 159: case ('n'):
1.24 kristaps 160: /* FALLTHROUGH */
1.45 kristaps 161: case ('V'):
1.24 kristaps 162: /* FALLTHROUGH */
1.45 kristaps 163: case ('Y'):
164: if (ESCAPE_ERROR == gly)
165: gly = ESCAPE_IGNORE;
1.24 kristaps 166: /* FALLTHROUGH */
1.45 kristaps 167: case ('f'):
168: if (ESCAPE_ERROR == gly)
169: gly = ESCAPE_FONT;
170:
171: rstart= &cp[i];
172: if (start)
173: *start = rstart;
174:
175: switch (cp[i++]) {
176: case ('('):
177: lim = 2;
178: break;
179: case ('['):
180: term = ']';
181: break;
182: default:
183: lim = 1;
184: i--;
185: break;
186: }
187: break;
188:
189: /*
190: * These escapes are of the form \X'Y', where 'X' is the trigger
191: * and 'Y' is any string. These have opaque sub-strings.
192: */
193: case ('A'):
1.24 kristaps 194: /* FALLTHROUGH */
1.45 kristaps 195: case ('b'):
1.24 kristaps 196: /* FALLTHROUGH */
197: case ('D'):
198: /* FALLTHROUGH */
1.45 kristaps 199: case ('o'):
1.24 kristaps 200: /* FALLTHROUGH */
1.45 kristaps 201: case ('R'):
1.24 kristaps 202: /* FALLTHROUGH */
1.45 kristaps 203: case ('X'):
1.24 kristaps 204: /* FALLTHROUGH */
1.45 kristaps 205: case ('Z'):
206: if ('\'' != cp[i++])
207: return(ESCAPE_ERROR);
208: gly = ESCAPE_IGNORE;
1.24 kristaps 209: term = '\'';
210: break;
1.45 kristaps 211:
212: /*
213: * These escapes are of the form \X'N', where 'X' is the trigger
214: * and 'N' resolves to a numerical expression.
215: */
216: case ('B'):
217: /* FALLTHROUGH */
1.28 kristaps 218: case ('h'):
219: /* FALLTHROUGH */
1.45 kristaps 220: case ('H'):
221: /* FALLTHROUGH */
222: case ('L'):
223: /* FALLTHROUGH */
224: case ('l'):
225: /* FALLTHROUGH */
226: case ('N'):
227: if (ESCAPE_ERROR == gly)
228: gly = ESCAPE_NUMBERED;
229: /* FALLTHROUGH */
230: case ('S'):
231: /* FALLTHROUGH */
1.28 kristaps 232: case ('v'):
233: /* FALLTHROUGH */
1.45 kristaps 234: case ('w'):
235: /* FALLTHROUGH */
236: case ('x'):
237: if (ESCAPE_ERROR == gly)
238: gly = ESCAPE_IGNORE;
239: if ('\'' != cp[i++])
240: return(ESCAPE_ERROR);
241: term = numeric = '\'';
242: break;
243:
244: /*
245: * Sizes get a special category of their own.
246: */
1.8 kristaps 247: case ('s'):
1.45 kristaps 248: gly = ESCAPE_IGNORE;
1.28 kristaps 249:
1.45 kristaps 250: rstart = &cp[i];
251: if (start)
252: *start = rstart;
253:
254: /* See +/- counts as a sign. */
255: c = cp[i];
256: if ('+' == c || '-' == c || ASCII_HYPH == c)
257: ++i;
1.8 kristaps 258:
1.45 kristaps 259: switch (cp[i++]) {
1.22 kristaps 260: case ('('):
1.45 kristaps 261: lim = 2;
1.22 kristaps 262: break;
263: case ('['):
1.45 kristaps 264: term = numeric = ']';
1.22 kristaps 265: break;
266: case ('\''):
1.45 kristaps 267: term = numeric = '\'';
1.22 kristaps 268: break;
269: default:
1.45 kristaps 270: lim = 1;
271: i--;
1.22 kristaps 272: break;
1.8 kristaps 273: }
274:
1.45 kristaps 275: /* See +/- counts as a sign. */
276: c = cp[i];
277: if ('+' == c || '-' == c || ASCII_HYPH == c)
278: ++i;
279:
280: break;
1.33 kristaps 281:
1.45 kristaps 282: /*
283: * Anything else is assumed to be a glyph.
284: */
285: default:
286: gly = ESCAPE_SPECIAL;
287: lim = 1;
288: i--;
1.22 kristaps 289: break;
1.45 kristaps 290: }
291:
292: assert(ESCAPE_ERROR != gly);
293:
294: rstart = &cp[i];
295: if (start)
296: *start = rstart;
297:
298: /*
299: * If a terminating block has been specified, we need to
300: * handle the case of recursion, which could have their
301: * own terminating blocks that mess up our parse. This, by the
302: * way, means that the "start" and "size" values will be
303: * effectively meaningless.
304: */
305:
306: ssz = 0;
307: if (numeric && -1 == (ssz = numescape(&cp[i])))
308: return(ESCAPE_ERROR);
309:
310: i += ssz;
311: rlim = -1;
312:
313: /*
314: * We have a character terminator. Try to read up to that
315: * character. If we can't (i.e., we hit the nil), then return
316: * an error; if we can, calculate our length, read past the
317: * terminating character, and exit.
318: */
319:
320: if ('\0' != term) {
321: *end = strchr(&cp[i], term);
322: if ('\0' == *end)
323: return(ESCAPE_ERROR);
324:
325: rlim = *end - &cp[i];
326: if (sz)
327: *sz = rlim;
328: (*end)++;
329: goto out;
330: }
331:
332: assert(lim > 0);
333:
334: /*
335: * We have a numeric limit. If the string is shorter than that,
336: * stop and return an error. Else adjust our endpoint, length,
337: * and return the current glyph.
338: */
339:
340: if ((size_t)lim > strlen(&cp[i]))
341: return(ESCAPE_ERROR);
342:
343: rlim = lim;
344: if (sz)
345: *sz = rlim;
346:
347: *end = &cp[i] + lim;
348:
349: out:
350: assert(rlim >= 0 && rstart);
351:
352: /* Run post-processors. */
353:
354: switch (gly) {
355: case (ESCAPE_FONT):
356: if (1 != rlim)
357: break;
358: switch (*rstart) {
359: case ('3'):
360: /* FALLTHROUGH */
361: case ('B'):
362: gly = ESCAPE_FONTBOLD;
363: break;
364: case ('2'):
365: /* FALLTHROUGH */
366: case ('I'):
367: gly = ESCAPE_FONTITALIC;
1.22 kristaps 368: break;
1.45 kristaps 369: case ('P'):
370: gly = ESCAPE_FONTPREV;
1.22 kristaps 371: break;
1.45 kristaps 372: case ('1'):
373: /* FALLTHROUGH */
374: case ('R'):
375: gly = ESCAPE_FONTROMAN;
1.1 kristaps 376: break;
377: }
1.46 kristaps 378: break;
1.45 kristaps 379: case (ESCAPE_SPECIAL):
380: if (1 != rlim)
381: break;
382: if ('c' == *rstart)
383: gly = ESCAPE_NOSPACE;
1.22 kristaps 384: break;
1.1 kristaps 385: default:
1.22 kristaps 386: break;
1.1 kristaps 387: }
388:
1.45 kristaps 389: return(gly);
1.1 kristaps 390: }
1.4 kristaps 391:
392: void *
393: mandoc_calloc(size_t num, size_t size)
394: {
395: void *ptr;
396:
397: ptr = calloc(num, size);
398: if (NULL == ptr) {
1.6 kristaps 399: perror(NULL);
1.35 kristaps 400: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 401: }
402:
403: return(ptr);
404: }
405:
406:
407: void *
408: mandoc_malloc(size_t size)
409: {
410: void *ptr;
411:
412: ptr = malloc(size);
413: if (NULL == ptr) {
1.6 kristaps 414: perror(NULL);
1.35 kristaps 415: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 416: }
417:
418: return(ptr);
419: }
420:
421:
422: void *
423: mandoc_realloc(void *ptr, size_t size)
424: {
425:
426: ptr = realloc(ptr, size);
427: if (NULL == ptr) {
1.6 kristaps 428: perror(NULL);
1.35 kristaps 429: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 430: }
431:
432: return(ptr);
433: }
434:
1.55 kristaps 435: char *
436: mandoc_strndup(const char *ptr, size_t sz)
437: {
438: char *p;
439:
440: p = mandoc_malloc(sz + 1);
441: memcpy(p, ptr, sz);
442: p[(int)sz] = '\0';
443: return(p);
444: }
1.4 kristaps 445:
446: char *
447: mandoc_strdup(const char *ptr)
448: {
449: char *p;
450:
451: p = strdup(ptr);
452: if (NULL == p) {
1.6 kristaps 453: perror(NULL);
1.35 kristaps 454: exit((int)MANDOCLEVEL_SYSERR);
1.4 kristaps 455: }
456:
457: return(p);
1.36 schwarze 458: }
459:
460: /*
461: * Parse a quoted or unquoted roff-style request or macro argument.
462: * Return a pointer to the parsed argument, which is either the original
463: * pointer or advanced by one byte in case the argument is quoted.
464: * Null-terminate the argument in place.
465: * Collapse pairs of quotes inside quoted arguments.
466: * Advance the argument pointer to the next argument,
467: * or to the null byte terminating the argument line.
468: */
469: char *
1.48 kristaps 470: mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
1.36 schwarze 471: {
472: char *start, *cp;
473: int quoted, pairs, white;
474:
475: /* Quoting can only start with a new word. */
476: start = *cpp;
1.47 kristaps 477: quoted = 0;
1.36 schwarze 478: if ('"' == *start) {
479: quoted = 1;
480: start++;
1.47 kristaps 481: }
1.36 schwarze 482:
483: pairs = 0;
484: white = 0;
485: for (cp = start; '\0' != *cp; cp++) {
486: /* Move left after quoted quotes and escaped backslashes. */
487: if (pairs)
488: cp[-pairs] = cp[0];
489: if ('\\' == cp[0]) {
490: if ('\\' == cp[1]) {
491: /* Poor man's copy mode. */
492: pairs++;
493: cp++;
494: } else if (0 == quoted && ' ' == cp[1])
495: /* Skip escaped blanks. */
496: cp++;
497: } else if (0 == quoted) {
498: if (' ' == cp[0]) {
499: /* Unescaped blanks end unquoted args. */
500: white = 1;
501: break;
502: }
503: } else if ('"' == cp[0]) {
504: if ('"' == cp[1]) {
505: /* Quoted quotes collapse. */
506: pairs++;
507: cp++;
508: } else {
509: /* Unquoted quotes end quoted args. */
510: quoted = 2;
511: break;
512: }
513: }
514: }
515:
516: /* Quoted argument without a closing quote. */
1.48 kristaps 517: if (1 == quoted)
1.42 kristaps 518: mandoc_msg(MANDOCERR_BADQUOTE, parse, ln, *pos, NULL);
1.36 schwarze 519:
520: /* Null-terminate this argument and move to the next one. */
521: if (pairs)
522: cp[-pairs] = '\0';
523: if ('\0' != *cp) {
524: *cp++ = '\0';
525: while (' ' == *cp)
526: cp++;
527: }
1.39 kristaps 528: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1.36 schwarze 529: *cpp = cp;
530:
1.48 kristaps 531: if ('\0' == *cp && (white || ' ' == cp[-1]))
1.42 kristaps 532: mandoc_msg(MANDOCERR_EOLNSPACE, parse, ln, *pos, NULL);
1.36 schwarze 533:
534: return(start);
1.4 kristaps 535: }
1.7 kristaps 536:
537: static int
538: a2time(time_t *t, const char *fmt, const char *p)
539: {
540: struct tm tm;
541: char *pp;
542:
543: memset(&tm, 0, sizeof(struct tm));
544:
1.56 ! kristaps 545: pp = NULL;
! 546: #ifdef HAVE_STRPTIME
1.7 kristaps 547: pp = strptime(p, fmt, &tm);
1.56 ! kristaps 548: #endif
1.7 kristaps 549: if (NULL != pp && '\0' == *pp) {
550: *t = mktime(&tm);
551: return(1);
552: }
553:
554: return(0);
555: }
556:
1.37 schwarze 557: static char *
558: time2a(time_t t)
559: {
1.56 ! kristaps 560: struct tm *tm;
1.38 schwarze 561: char *buf, *p;
562: size_t ssz;
1.37 schwarze 563: int isz;
564:
1.56 ! kristaps 565: tm = localtime(&t);
1.37 schwarze 566:
1.38 schwarze 567: /*
568: * Reserve space:
569: * up to 9 characters for the month (September) + blank
570: * up to 2 characters for the day + comma + blank
571: * 4 characters for the year and a terminating '\0'
572: */
573: p = buf = mandoc_malloc(10 + 4 + 4 + 1);
574:
1.56 ! kristaps 575: if (0 == (ssz = strftime(p, 10 + 1, "%B ", tm)))
1.38 schwarze 576: goto fail;
577: p += (int)ssz;
1.37 schwarze 578:
1.56 ! kristaps 579: if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
1.38 schwarze 580: goto fail;
1.37 schwarze 581: p += isz;
582:
1.56 ! kristaps 583: if (0 == strftime(p, 4 + 1, "%Y", tm))
1.38 schwarze 584: goto fail;
585: return(buf);
586:
587: fail:
588: free(buf);
589: return(NULL);
1.37 schwarze 590: }
591:
592: char *
1.42 kristaps 593: mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
1.7 kristaps 594: {
1.37 schwarze 595: char *out;
1.7 kristaps 596: time_t t;
597:
1.37 schwarze 598: if (NULL == in || '\0' == *in ||
599: 0 == strcmp(in, "$" "Mdocdate$")) {
1.42 kristaps 600: mandoc_msg(MANDOCERR_NODATE, parse, ln, pos, NULL);
1.37 schwarze 601: time(&t);
602: }
603: else if (!a2time(&t, "$" "Mdocdate: %b %d %Y $", in) &&
604: !a2time(&t, "%b %d, %Y", in) &&
605: !a2time(&t, "%Y-%m-%d", in)) {
1.42 kristaps 606: mandoc_msg(MANDOCERR_BADDATE, parse, ln, pos, NULL);
1.37 schwarze 607: t = 0;
1.7 kristaps 608: }
1.37 schwarze 609: out = t ? time2a(t) : NULL;
1.38 schwarze 610: return(out ? out : mandoc_strdup(in));
1.7 kristaps 611: }
612:
1.12 kristaps 613: int
1.23 schwarze 614: mandoc_eos(const char *p, size_t sz, int enclosed)
1.12 kristaps 615: {
1.23 schwarze 616: const char *q;
617: int found;
1.12 kristaps 618:
1.13 kristaps 619: if (0 == sz)
620: return(0);
1.12 kristaps 621:
1.14 kristaps 622: /*
623: * End-of-sentence recognition must include situations where
624: * some symbols, such as `)', allow prior EOS punctuation to
1.49 kristaps 625: * propagate outward.
1.14 kristaps 626: */
627:
1.23 schwarze 628: found = 0;
1.25 kristaps 629: for (q = p + (int)sz - 1; q >= p; q--) {
1.23 schwarze 630: switch (*q) {
1.14 kristaps 631: case ('\"'):
632: /* FALLTHROUGH */
633: case ('\''):
1.15 kristaps 634: /* FALLTHROUGH */
635: case (']'):
1.14 kristaps 636: /* FALLTHROUGH */
637: case (')'):
1.23 schwarze 638: if (0 == found)
639: enclosed = 1;
1.14 kristaps 640: break;
641: case ('.'):
642: /* FALLTHROUGH */
643: case ('!'):
644: /* FALLTHROUGH */
645: case ('?'):
1.23 schwarze 646: found = 1;
647: break;
1.14 kristaps 648: default:
1.27 joerg 649: return(found && (!enclosed || isalnum((unsigned char)*q)));
1.14 kristaps 650: }
1.12 kristaps 651: }
652:
1.23 schwarze 653: return(found && !enclosed);
1.16 kristaps 654: }
655:
656: int
657: mandoc_hyph(const char *start, const char *c)
658: {
659:
660: /*
661: * Choose whether to break at a hyphenated character. We only
662: * do this if it's free-standing within a word.
663: */
664:
665: /* Skip first/last character of buffer. */
666: if (c == start || '\0' == *(c + 1))
667: return(0);
668: /* Skip first/last character of word. */
669: if ('\t' == *(c + 1) || '\t' == *(c - 1))
670: return(0);
671: if (' ' == *(c + 1) || ' ' == *(c - 1))
672: return(0);
673: /* Skip double invocations. */
674: if ('-' == *(c + 1) || '-' == *(c - 1))
675: return(0);
676: /* Skip escapes. */
677: if ('\\' == *(c - 1))
678: return(0);
679:
680: return(1);
1.40 kristaps 681: }
682:
1.44 kristaps 683: /*
684: * Find out whether a line is a macro line or not. If it is, adjust the
685: * current position and return one; if it isn't, return zero and don't
686: * change the current position.
687: */
688: int
689: mandoc_getcontrol(const char *cp, int *ppos)
690: {
691: int pos;
692:
693: pos = *ppos;
694:
695: if ('\\' == cp[pos] && '.' == cp[pos + 1])
696: pos += 2;
697: else if ('.' == cp[pos] || '\'' == cp[pos])
698: pos++;
699: else
700: return(0);
701:
702: while (' ' == cp[pos] || '\t' == cp[pos])
703: pos++;
704:
705: *ppos = pos;
706: return(1);
707: }
1.50 kristaps 708:
709: /*
710: * Convert a string to a long that may not be <0.
711: * If the string is invalid, or is less than 0, return -1.
712: */
713: int
1.54 kristaps 714: mandoc_strntoi(const char *p, size_t sz, int base)
1.50 kristaps 715: {
716: char buf[32];
717: char *ep;
718: long v;
719:
720: if (sz > 31)
721: return(-1);
722:
723: memcpy(buf, p, sz);
1.51 kristaps 724: buf[(int)sz] = '\0';
1.50 kristaps 725:
726: errno = 0;
727: v = strtol(buf, &ep, base);
728:
729: if (buf[0] == '\0' || *ep != '\0')
730: return(-1);
731:
1.54 kristaps 732: if (v > INT_MAX)
733: v = INT_MAX;
734: if (v < INT_MIN)
735: v = INT_MIN;
1.50 kristaps 736:
737: return((int)v);
738: }
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