1 files changed, 114 insertions, 0 deletions
diff --git a/usr/src/boot/libsa/gets.c b/usr/src/boot/libsa/gets.c
new file mode 100644
index 0000000000..781e161edb
--- /dev/null
+++ b/usr/src/boot/libsa/gets.c
@@ -0,0 +1,114 @@
+/*	$NetBSD: gets.c,v 1.6 1995/10/11 21:16:57 pk Exp $	*/
+
+/*
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  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.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *	@(#)gets.c	8.1 (Berkeley) 6/11/93
+ */
+
+#include <sys/cdefs.h>
+
+#include "stand.h"
+
+/* gets() with constrained input length */
+
+void
+ngets(char *buf, int n)
+{
+	int c;
+	char *lp;
+
+	for (lp = buf; ; ) {
+		c = getchar();
+		if (c == -1)
+			break;
+		switch (c & 0177) {
+		case '\n':
+		case '\r':
+			*lp = '\0';
+			putchar('\n');
+			return;
+		case '\b':
+		case '\177':
+			if (lp > buf) {
+				lp--;
+				putchar('\b');
+				putchar(' ');
+				putchar('\b');
+			}
+			break;
+		case 'r' & 037: {
+			char *p;
+
+			putchar('\n');
+			for (p = buf; p < lp; ++p)
+				putchar(*p);
+			break;
+		}
+		case 'u' & 037:
+		case 'w' & 037:
+			lp = buf;
+			putchar('\n');
+			break;
+		default:
+			if ((n < 1) || ((lp - buf) < n - 1)) {
+				*lp++ = c;
+				putchar(c);
+			}
+		}
+	}
+	/*NOTREACHED*/
+}
+
+int
+fgetstr(char *buf, int size, int fd)
+{
+	char	c;
+	int	err, len;
+
+	size--;	/* leave space for terminator */
+	len = 0;
+	while (size != 0) {
+		err = read(fd, &c, sizeof (c));
+		if (err < 0)		/* read error */
+			return (-1);
+		if (err == 0) {		/* EOF */
+			if (len == 0)
+				return (-1);	/* nothing to read */
+			break;
+		}
+		if ((c == '\r') ||	/* line terminators */
+		    (c == '\n'))
+			break;
+		*buf++ = c;		/* keep char */
+		size--;
+		len++;
+	}
+	*buf = 0;
+	return (len);
+}