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/* File isrange.c
* January 10, 2007
* By Jessica Mink, Harvard-Smithsonian Center for Astrophysics
* Send bug reports to jmink@cfa.harvard.edu
Copyright (C) 2001-2007
Smithsonian Astrophysical Observatory, Cambridge, MA USA
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*
* Return 1 if argument is a range
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static char *RevMsg = "ISRANGE WCSTools 3.9.7, 26 April 2022, Jessica Mink (jmink@cfa.harvard.edu)";
static int isrange();
int
main (ac, av)
int ac;
char **av;
{
char *str;
/* Check for help or version command first */
str = *(av+1);
if (!str || !strcmp (str, "help") || !strcmp (str, "-help")) {
fprintf (stderr,"%s\n",RevMsg);
fprintf (stderr,"Usage: Return 1 if argument is a range of numbers: n1[-n2[xs]],...\n");
fprintf (stderr," where n1=first number, n2=last number, and s=step size.\n");
exit (1);
}
else if (!strcmp (str, "version") || !strcmp (str, "-version")) {
fprintf (stderr,"%s\n",RevMsg);
exit (1);
}
/* check to see if this is a range */
else
printf ("%d\n", isrange (str));
exit (0);
}
/* ISRANGE -- Return 1 if string is a range, else 0 */
static int
isrange (string)
char *string; /* String which might be a range of numbers */
{
int i, lstr;
/* If range separators present, check to make sure string is range */
if (strchr (string+1, '-') || strchr (string+1, ',')) {
lstr = strlen (string);
for (i = 0; i < lstr; i++) {
if (strchr ("0123456789-,.x", (int)string[i]) == NULL)
return (0);
}
return (1);
}
else
return (0);
}
/* Dec 14 2001 New program
*
* Apr 11 2005 Print version; improve online documentation
*
* Mar 3 2006 Declare main to be int
* Jun 20 2006 Drop unused variable fn
*
* Jan 10 2007 Declare RevMsg static, not const
*/
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