BSD 4_4 release

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

/*-
* Copyright (c) 1991, 1993
*      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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
static char sccsid[] = "@(#)scheck.c    8.1 (Berkeley) 6/8/93";
#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;
}