minor nits

[unix-history] / usr / src / share / zoneinfo / scheck.c

/*-
* Copyright (c) 1991 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Arthur David Olson of the National Cancer Institute.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)scheck.c    5.3 (Berkeley) %G%";
#endif /* not lint */

#ifdef notdef
static char     elsieid[] = "@(#)scheck.c       8.9";
#endif

/*LINTLIBRARY*/

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>

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;

       result = "";
       if (string == NULL || format == NULL)
               return result;
       fbuf = malloc(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((char *)string, fbuf, &dummy) != 1)
               result = (char *) format;
       ifree(fbuf);
       return result;
}