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/* File isnum.c
* August 23, 2016
* By Jessica Mink, Harvard-Smithsonian Center for Astrophysics
* Send bug reports to jmink@cfa.harvard.edu
Copyright (C) 2001-2016
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 an integer, 2 if it is floating point, else 0
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libwcs/fitshead.h"
static char *RevMsg = "ISNUM WCSTools 3.9.7, 26 April 2022, Jessica Mink (jmink@cfa.harvard.edu)";
int
main (ac, av)
int ac;
char **av;
{
char *str;
int arg;
/* Check for version or help command first */
str = *(av+1);
if (!str || !strcmp (str, "help") || !strcmp (str, "-help")) {
fprintf (stderr,"%s\n",RevMsg);
fprintf (stderr,"Usage: isnum [-n] <string>\n");
fprintf (stderr," -n Do not return linefeed (for scripting)\n");
fprintf (stderr," Return 1 if argument is an integer,\n");
fprintf (stderr," Return 2 if it is floating point\n");
fprintf (stderr," Return 3 if it is a time with colons\n");
fprintf (stderr," Return 4 if it is a date with dashes\n");
fprintf (stderr," Return 0 otherwise\n");
exit (1);
}
else if (!strcmp (str, "version") || !strcmp (str, "-version")) {
fprintf (stderr,"%s\n",RevMsg);
exit (1);
}
/* If -n, do not print linefeed after number (for scripting) */
if ( !strcmp (str, "-n") ) {
arg = 1;
str = *(av+2);
}
/* Check to see if this is a number */
if (arg) {
printf ("%d", isnum (str));
}
else {
printf ("%d\n", isnum (str));
}
exit (0);
}
/* Nov 7 2001 New program
*
* Apr 11 2005 Print version
*
* Apr 3 2006 Declare main to be int
*
* Jan 10 2007 Drop unused variable fn
*
* Nov 6 2015 Add return definition for 3 and 4
*
* Dec 9 2015 Add -n option to output number without linefeed
*
* Aug 23 2016 Document -n option
*/
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