1 files changed, 130 insertions, 0 deletions

diff --git a/src/lib/libc/stdlib/multibyte.c b/src/lib/libc/stdlib/multibyte.c
new file mode 100644
index 0000000000..12e70c4a2c
--- /dev/null
+++ b/src/lib/libc/stdlib/multibyte.c
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 1991 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$OpenBSD: multibyte.c,v 1.2 1996/08/19 08:33:39 tholo Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdlib.h>
+
+/*
+ * Stub multibyte character functions.
+ * This cheezy implementation is fixed to the native single-byte
+ * character set.
+ */
+
+int
+mblen(s, n)
+        const char *s;
+        size_t n;
+{
+        if (s == NULL || *s == '\0')
+                return 0;
+        if (n == 0)
+                return -1;
+        return 1;
+}
+
+/*ARGSUSED*/
+int
+mbtowc(pwc, s, n)
+        wchar_t *pwc;
+        const char *s;
+        size_t n;
+{
+        if (s == NULL)
+                return 0;
+        if (n == 0)
+                return -1;
+        if (pwc)
+                *pwc = (wchar_t) *s;
+        return (*s != '\0');
+}
+
+/*ARGSUSED*/
+int
+#ifdef __STDC__
+wctomb(char *s, wchar_t wchar)
+#else
+wctomb(s, wchar)
+        char *s;
+        wchar_t wchar;
+#endif
+{
+        if (s == NULL)
+                return 0;
+
+        *s = (char) wchar;
+        return 1;
+}
+
+/*ARGSUSED*/
+size_t
+mbstowcs(pwcs, s, n)
+        wchar_t *pwcs;
+        const char *s;
+        size_t n;
+{
+        int count = 0;
+
+        if (n != 0) {
+                do {
+                        if ((*pwcs++ = (wchar_t) *s++) == 0)
+                                break;
+                        count++;
+                } while (--n != 0);
+        }
+        
+        return count;
+}
+
+/*ARGSUSED*/
+size_t
+wcstombs(s, pwcs, n)
+        char *s;
+        const wchar_t *pwcs;
+        size_t n;
+{
+        int count = 0;
+
+        if (n != 0) {
+                do {
+                        if ((*s++ = (char) *pwcs++) == 0)
+                                break;
+                        count++;
+                } while (--n != 0);
+        }
+
+        return count;
+}
+