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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.
*/
/* strarg -- parse a string
*
* Usage: p = strarg (ptr, brk, prompt, defalt, buf);
* char *p, **ptr, *brk, *prompt, *defalt, *buf;
*
* Strarg will parse an argument from the string pointed to by "ptr",
* bumping ptr to point to the next argument in the string.
* The argument parsed will be copied into "buf". If there is no
* argument, then getstr() will be called, and the value placed into
* buf. In any event, the address of buf is returned as a value.
* "Brk" is the list of characters which terminate an argument;
* if 0, then " " is used.
*
* HISTORY
* $Log: strarg.c,v $
* Revision 1.2 90/12/11 17:59:59 mja
* Add copyright/disclaimer for distribution.
*
* 20-Nov-79 Steven Shafer (sas) at Carnegie-Mellon University
* Rewritten for VAX.
*
*/
#include <libc.h>
char *strarg (ptr, brk, prompt, defalt, buf)
char **ptr, *brk, *prompt, *defalt, *buf;
{
register char *arg;
arg = nxtarg (ptr,brk); /* parse an argument */
fflush (stdout);
if (*arg && strcmp (arg,"?")!=0) strcpy (buf,arg);
else getstr (prompt,defalt,buf);
return (buf);
}
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