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freebsd/usr.sbin/zic/scheck.c
Garrett Wollman 8211a3a80c The latest and greatest timezone code from Arthur David Olson, part 1.
This import comprises the `zic' and `zdump' programs.

Obtained from: Arthur David Olson, ftp://elsie.nci.nih.gov/pub/tzcode94g
1994-09-13 03:29:24 +00:00

63 lines
1.2 KiB
C

#ifndef lint
#ifndef NOID
static char elsieid[] = "@(#)scheck.c 8.11";
#endif /* !defined lint */
#endif /* !defined NOID */
/*LINTLIBRARY*/
#include "private.h"
extern char * imalloc P((int n));
extern void ifree P((char * p));
char *
scheck(string, format)
const char * const string;
const char * const format;
{
register char * fbuf;
register const char * fp;
register char * tp;
register int c;
register char * result;
char dummy;
static char nada[1];
result = nada;
if (string == NULL || format == NULL)
return result;
fbuf = imalloc(2 * strlen(format) + 4);
if (fbuf == NULL)
return result;
fp = format;
tp = fbuf;
while ((*tp++ = c = *fp++) != '\0') {
if (c != '%')
continue;
if (*fp == '%') {
*tp++ = *fp++;
continue;
}
*tp++ = '*';
if (*fp == '*')
++fp;
while (isascii(*fp) && isdigit(*fp))
*tp++ = *fp++;
if (*fp == 'l' || *fp == 'h')
*tp++ = *fp++;
else if (*fp == '[')
do *tp++ = *fp++;
while (*fp != '\0' && *fp != ']');
if ((*tp++ = *fp++) == '\0')
break;
}
*(tp - 1) = '%';
*tp++ = 'c';
*tp = '\0';
if (sscanf(string, fbuf, &dummy) != 1)
result = (char *) format;
ifree(fbuf);
return result;
}