ust_safe_snprintf: add openbsd mbrtowc() function

[ust.git] / snprintf / mbrtowc_sb.c

diff --git a/snprintf/mbrtowc_sb.c b/snprintf/mbrtowc_sb.c
new file mode 100644 (file)
index 0000000..0abecc8
--- /dev/null
+++ b/snprintf/mbrtowc_sb.c
@@ -0,0 +1,53 @@
+/*     $OpenBSD: mbrtowc_sb.c,v 1.4 2005/11/27 20:03:06 cloder Exp $   */
+/*     $NetBSD: multibyte_sb.c,v 1.4 2003/08/07 16:43:04 agc Exp $     */
+
+/*
+ * 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. 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.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+/*ARGSUSED*/
+size_t
+ust_safe_mbrtowc(wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
+{
+
+       /* pwc may be NULL */
+       /* s may be NULL */
+       /* ps appears to be unused */
+
+       if (s == NULL)
+               return 0;
+       if (n == 0)
+               return (size_t)-1;
+       if (pwc)
+               *pwc = (wchar_t)(unsigned char)*s;
+       return (*s != '\0');
+}