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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.
- */
- /* intarg -- parse integer argument
- *
- * Usage: i = intarg (ptr,brk,prompt,min,max,default)
- * int 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 integer. If there is
- * no arg or the value of the arg is not within the range
- * [min..max], then "getint" is called to ask the user for an
- * integer value.
- * "Brk" is the list of characters which may terminate an argument;
- * if 0, then " " is used.
- *
- * HISTORY
- * $Log: intarg.c,v $
- * Revision 1.2 90/12/11 17:56:28 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
- * Rewritten for VAX.
- *
- */
-
- #include <ctype.h>
- #include <stdio.h>
-
- int getint();
- char *nxtarg();
- long atol();
- int strcmp();
-
- int intarg (ptr,brk,prompt,min,max,defalt)
- char **ptr;
- char *brk,*prompt;
- int min,max,defalt;
- {
- register int 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 = getint (prompt,min,max,defalt);
- }
-
- return (i);
- }
-