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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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