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getcom.c revision 1.3 
      1 /*	$NetBSD: getcom.c,v 1.3 1995/03/21 15:07:30 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)getcom.c	8.1 (Berkeley) 5/31/93";
     39 #else
     40 static char rcsid[] = "$NetBSD: getcom.c,v 1.3 1995/03/21 15:07:30 cgd Exp $";
     41 #endif
     42 #endif /* not lint */
     43 
     44 #include <stdio.h>
     45 #include <ctype.h>
     46 
     47 char *
     48 getcom(buf, size, prompt, error)
     49 	char *buf;
     50 	int size;
     51 	char *prompt, *error;
     52 {
     53 	for (;;) {
     54 		fputs(prompt, stdout);
     55 		if (fgets(buf, size, stdin) == 0) {
     56 			clearerr(stdin);
     57 			continue;
     58 		}
     59 		while (isspace(*buf))
     60 			buf++;
     61 		if (*buf)
     62 			break;
     63 		if (error)
     64 			puts(error);
     65 	}
     66 	return (buf);
     67 }
     68 
     69 
     70 /*
     71  * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
     72  * and leaves it unchanged if flag = 0
     73  */
     74 char *
     75 getword(buf1, buf2, flag)
     76 	register char *buf1, *buf2;
     77 	register flag;
     78 {
     79 	while (isspace(*buf1))
     80 		buf1++;
     81 	if (*buf1 != ',') {
     82 		if (!*buf1) {
     83 			*buf2 = 0;
     84 			return (0);
     85 		}
     86 		while (*buf1 && !isspace(*buf1) && *buf1 != ',')
     87 			if (flag < 0)
     88 				if (isupper(*buf1))
     89 					*buf2++ = tolower(*buf1++);
     90 				else
     91 					*buf2++ = *buf1++;
     92 			else if (flag > 0)
     93 				if (islower(*buf1))
     94 					*buf2++ = toupper(*buf1++);
     95 				else
     96 					*buf2++ = *buf1++;
     97 			else
     98 				*buf2++ = *buf1++;
     99 	} else
    100 		*buf2++ = *buf1++;
    101 	*buf2 = 0;
    102 	while (isspace(*buf1))
    103 		buf1++;
    104 	return (*buf1 ? buf1 : 0);
    105 }
    106