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/*
* Copyright (c) 1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND CARNEGIE MELLON UNIVERSITY
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
* SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Users of this software agree to return to Carnegie Mellon any
* improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* Export of this software is permitted only after complying with the
* regulations of the U.S. Deptartment of Commerce relating to the
* Export of Technical Data.
*/
/* longarg -- parse long integer argument
*
* Usage: i = longarg (ptr,brk,prompt,min,max,default)
* long i,min,max,default;
* char **ptr,*brk,*prompt;
*
* Will attempt to parse an argument from the string pointed to
* by "ptr", incrementing ptr to point to the next arg. If
* an arg is found, it is converted into an long. If there is
* no arg or the value of the arg is not within the range
* [min..max], then "getlong" is called to ask the user for an
* long value.
* "brk" is the list of characters which terminate an argument;
* if brk is 0, then " " is used.
*
* HISTORY
* $Log: longarg.c,v $
* Revision 1.2 90/12/11 17:56:36 mja
* Add copyright/disclaimer for distribution.
*
* 28-Apr-85 Steven Shafer (sas) at Carnegie-Mellon University
* Modified for 4.2 BSD. Now puts output on stderr.
*
* 20-Nov-79 Steven Shafer (sas) at Carnegie-Mellon University
* Created for VAX.
*
*/
#include <ctype.h>
#include <stdio.h>
long getlong();
char *nxtarg();
long atol();
int strcmp();
long longarg (ptr,brk,prompt,min,max,defalt)
char **ptr;
char *brk, *prompt;
long min,max,defalt;
{
register long i;
register char *arg,*p;
arg = nxtarg (ptr,brk);
fflush (stdout);
if (*arg != '\0') { /* if there was an arg */
for (p=arg; *p && (isdigit(*p) || *p == '-' || *p == '+'); p++) ;
if (*p) {
if (strcmp(arg,"?") != 0) fprintf (stderr,"%s not numeric. ",arg);
}
else {
i = atol (arg);
if (i<min || i>max) {
fprintf (stderr,"%D out of range. ",i);
}
}
}
if (*arg == '\0' || *p != '\0' || i<min || i>max) {
i = getlong (prompt,min,max,defalt);
}
return (i);
}
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