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1 /*-
2  * Copyright (c) 1999 Michael Smith
3  * Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30
31 #include <sys/param.h>
32 #include <sys/cons.h>
33 #include <sys/libkern.h>
34
35 void
36 gets(char *cp, size_t size, int visible)
37 {
38         char *lp, *end;
39         int c;
40
41         lp = cp;
42         end = cp + size - 1;
43         for (;;) {
44                 c = cngetc() & 0177;
45                 switch (c) {
46                 case '\n':
47                 case '\r':
48                         printf("%c", c);
49                         *lp = '\0';
50                         return;
51                 case '\b':
52                 case '\177':
53                         if (lp > cp) {
54                                 if (visible)
55                                         printf("%c \b", c);
56                                 lp--;
57                         }
58                         continue;
59                 case '\0':
60                         continue;
61                 default:
62                         if (lp < end) {
63                                 switch (visible) {
64                                 case GETS_NOECHO:
65                                         break;
66                                 case GETS_ECHOPASS:
67                                         printf("*");
68                                         break;
69                                 default:        
70                                         printf("%c", c);
71                                         break;
72                                 }
73                                 *lp++ = c;
74                         }
75                 }
76         }
77 }