diff options
Diffstat (limited to 'sys/libkern/gets.c')
-rw-r--r-- | sys/libkern/gets.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/sys/libkern/gets.c b/sys/libkern/gets.c new file mode 100644 index 0000000..4efc280 --- /dev/null +++ b/sys/libkern/gets.c @@ -0,0 +1,67 @@ +/*- + * Copyright (c) 1999 Michael Smith + * Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/cons.h> +#include <sys/libkern.h> + +void +gets(char *cp, size_t size, int visible) +{ + char *lp, *end; + int c; + + lp = cp; + end = cp + size - 1; + for (;;) { + c = cngetc() & 0177; + switch (c) { + case -1: + case '\n': + case '\r': + *lp = '\0'; + return; + case '\b': + case '\177': + if (lp > cp) { + if (visible) + printf("%c \b", c); + lp--; + } + continue; + default: + if (lp < end) { + if (visible) + printf("%c", c); + *lp++ = c; + } + } + } +} |