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      1 #pragma ident	"%Z%%M%	%I%	%E% SMI"
      2 
      3 /* static char	elsieid[] = "@(#)scheck.c	8.17"; */
      4 
      5 /*LINTLIBRARY*/
      6 
      7 #include "private.h"
      8 
      9 const char *
     10 scheck(string, format)
     11 const char * const	string;
     12 const char * const	format;
     13 {
     14 	register char		*fbuf;
     15 	register const char	*fp;
     16 	register char		*tp;
     17 	register int		c;
     18 	register const char	*result;
     19 	char			dummy;
     20 
     21 	result = "";
     22 	if (string == NULL || format == NULL)
     23 		return (result);
     24 	fbuf = imalloc((int)(2 * strlen(format) + 4));
     25 	if (fbuf == NULL)
     26 		return (result);
     27 	fp = format;
     28 	tp = fbuf;
     29 	while ((*tp++ = c = *fp++) != '\0') {
     30 		if (c != '%')
     31 			continue;
     32 		if (*fp == '%') {
     33 			*tp++ = *fp++;
     34 			continue;
     35 		}
     36 		*tp++ = '*';
     37 		if (*fp == '*')
     38 			++fp;
     39 		while (is_digit(*fp))
     40 			*tp++ = *fp++;
     41 		if (*fp == 'l' || *fp == 'h')
     42 			*tp++ = *fp++;
     43 		else if (*fp == '[')
     44 			do *tp++ = *fp++;
     45 				while (*fp != '\0' && *fp != ']');
     46 		if ((*tp++ = *fp++) == '\0')
     47 			break;
     48 	}
     49 	*(tp - 1) = '%';
     50 	*tp++ = 'c';
     51 	*tp = '\0';
     52 	if (sscanf(string, fbuf, &dummy) != 1)
     53 		result = (char *)format;
     54 	ifree(fbuf);
     55 	return (result);
     56 }
     57