1/*	$NetBSD: getcom.c,v 1.15 2021/05/02 12:50:43 rillig 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. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34#if 0
35static char sccsid[] = "@(#)getcom.c	8.1 (Berkeley) 5/31/93";
36#else
37__RCSID("$NetBSD: getcom.c,v 1.15 2021/05/02 12:50:43 rillig Exp $");
38#endif
39#endif				/* not lint */
40
41#include "extern.h"
42
43char *
44getcom(char *buf, int size, const char *prompt, const char *error)
45{
46	for (;;) {
47		fputs(prompt, stdout);
48		if (fgets(buf, size, stdin) == NULL) {
49			if (feof(stdin))
50				die();
51			clearerr(stdin);
52			continue;
53		}
54		while (isspace((unsigned char)*buf))
55			buf++;
56		if (*buf)
57			break;
58		if (error)
59			puts(error);
60	}
61	/* If we didn't get to the end of line, don't read it in next time. */
62	if (buf[strlen(buf) - 1] != '\n') {
63		int i;
64		while ((i = getchar()) != '\n' && i != EOF)
65			continue;
66	}
67	return (buf);
68}
69
70
71/*
72 * shifts to UPPERCASE if flag > 0, lowercase if flag < 0,
73 * and leaves it unchanged if flag = 0
74 */
75char   *
76getword(char *buf1, char *buf2, int flag)
77{
78	int cnt;
79
80	cnt = 1;
81	while (isspace((unsigned char)*buf1))
82		buf1++;
83	if (*buf1 != ',') {
84		if (!*buf1) {
85			*buf2 = 0;
86			return (0);
87		}
88		while (cnt < WORDLEN && *buf1 &&
89		    !isspace((unsigned char)*buf1) && *buf1 != ',')
90			if (flag < 0) {
91				if (isupper((unsigned char)*buf1)) {
92					*buf2++ =
93					    tolower((unsigned char)*buf1++);
94					cnt++;
95				} else {
96					*buf2++ = *buf1++;
97					cnt++;
98				}
99			} else if (flag > 0) {
100				if (islower((unsigned char)*buf1)) {
101					*buf2++ =
102					    toupper((unsigned char)*buf1++);
103					cnt++;
104				} else {
105					*buf2++ = *buf1++;
106					cnt++;
107				}
108			} else {
109				*buf2++ = *buf1++;
110				cnt++;
111			}
112		if (cnt == WORDLEN)
113			while (*buf1 && !isspace((unsigned char)*buf1))
114				buf1++;
115	} else
116		*buf2++ = *buf1++;
117	*buf2 = '\0';
118	while (isspace((unsigned char)*buf1))
119		buf1++;
120	return (*buf1 ? buf1 : NULL);
121}
122