OpenSolaris Launch

1 files changed, 92 insertions, 0 deletions

diff --git a/usr/src/lib/libcurses/screen/mbtowc.c b/usr/src/lib/libcurses/screen/mbtowc.c
new file mode 100644
index 0000000000..836faf34c1
--- /dev/null
+++ b/usr/src/lib/libcurses/screen/mbtowc.c
@@ -0,0 +1,92 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*  Copyright (c) 1988 AT&T */
+/*    All Rights Reserved   */
+
+
+/*
+ *      Copyright (c) 1997, by Sun Microsystems, Inc.
+ *      All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*LINTLIBRARY*/
+
+#include <widec.h>
+#include "synonyms.h"
+#include <ctype.h>
+#include <sys/types.h>
+#include "curses_wchar.h"
+
+int
+_curs_mbtowc(wchar_t *wchar, const char *s, size_t n)
+{
+	int length, c;
+	wchar_t intcode;
+	char *olds = (char *)s;
+	wchar_t mask;
+
+	if (s == (char *)0)
+		return (0);
+	if (n == 0)
+		return (-1);
+	c = (unsigned char)*s++;
+	if (c < 0200) {
+		if (wchar)
+			*wchar = c;
+		return (c ? 1 : 0);
+	}
+	intcode = 0;
+	if (c == SS2) {
+		if ((length = eucw2) == 0)
+			goto lab1;
+		mask = P01;
+		goto lab2;
+	} else if (c == SS3) {
+		if ((length = eucw3) == 0)
+			goto lab1;
+		mask = P10;
+		goto lab2;
+	}
+lab1:
+	if (iscntrl(c)) {
+		if (wchar)
+			*wchar = c;
+		return (1);
+	}
+	length = eucw1 - 1;
+	mask = P11;
+	intcode = c & 0177;
+lab2:
+	if (length + 1 > n || length < 0)
+		return (-1);
+	while (length--) {
+		if ((c = (unsigned char)*s++) < 0200 || iscntrl(c))
+			return (-1);
+		intcode = (intcode << 7) | (c & 0x7F);
+	}
+	if (wchar)
+		*wchar = intcode | mask;
+	/*LINTED*/
+	return ((int) (s - olds));
+}