add getsn(char *buf, int len)

1 files changed, 79 insertions, 0 deletions

diff --git a/sys/lib/libkern/getsn.c b/sys/lib/libkern/getsn.c
new file mode 100644
index 00000000000..7a5d7a518c0
--- /dev/null
+++ b/sys/lib/libkern/getsn.c
@@ -0,0 +1,79 @@
+/*	$OpenBSD: getsn.c,v 1.1 1996/06/16 01:14:20 deraadt Exp $	*/
+
+/*
+ * Copyright (c) 1996 Theo de Raadt
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Theo de Raadt.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+int
+getsn(cp, size)
+	char *cp;
+	int size;
+{
+	register char *lp;
+	register int len;
+	register int c;
+
+	lp = cp;
+	len = 0;
+	for (;;) {
+		c = cngetc();
+		switch (c) {
+		case '\n':
+		case '\r':
+			printf("\n");
+			*lp++ = '\0';
+			return (len);
+		case '\b':
+		case '\177':
+			if (len) {
+				printf("\b \b");
+				--lp;
+				--len;
+			}
+			break;
+		case 'u' & 037:
+			while (len) {
+				printf("\b \b");
+				--lp;
+				--len;
+			}
+			break;
+		case '\t':
+			c = ' ';
+		default:
+			if (len + 1 >= size || c < ' ') {
+				printf("\007");
+				break;
+			}
+			printf("%c", c);
+			++len;
+			*lp++ = c;
+		}
+	}
+}