1 files changed, 108 insertions, 0 deletions
diff --git a/newlib/libc/string/wcslcat.c b/newlib/libc/string/wcslcat.c
new file mode 100644
index 000000000..adf683ad5
--- /dev/null
+++ b/newlib/libc/string/wcslcat.c
@@ -0,0 +1,108 @@
+/*
+FUNCTION
+	<<wcslcat>>---concatenate wide-character strings to specified length
+
+ANSI_SYNOPSIS
+	#include <wchar.h>
+	size_t wcslcat(wchar_t *<[dst]>, const wchar_t *<[src]>, size_t <[siz]>);
+
+TRAD_SYNOPSIS
+	#include <wchar.h>
+	size_t wcslcat(<[dst]>, <[src]>, <[siz]>
+	wchar_t *<[dst]>;
+	const wchar_t *<[src]>;
+	size_t <[siz]>;
+
+DESCRIPTION
+	The <<wcslcat>> function appends wide-characters from <[src]> to
+	end of the <[dst]> wide-character string so that the resultant
+	wide-character string is not more than <[siz]> wide-characters
+	including terminating null wide-character code.  A terminating
+	null wide-character is always added unless <[siz]> is 0.  Thus,
+	the maximum number of wide-characters that can be appended from
+	<[src]> is <[siz]> - 1. If copying takes place between objects 
+	that overlap, the behaviour is undefined.
+
+RETURNS
+	Wide-character string length of initial <[dst]> plus the
+	wide-character string length of <[src]> (does not include
+	terminating null wide-characters).  If the return value is
+	greater than or equal to <[siz]>, then truncation occurred and
+	not all wide-characters from <[src]> were appended.
+
+PORTABILITY
+No supporting OS subroutines are required.
+*/
+
+/*	$NetBSD: wcslcat.c,v 1.1 2000/12/23 23:14:36 itojun Exp $	*/
+/*	from OpenBSD: strlcat.c,v 1.3 2000/11/24 11:10:02 itojun Exp 	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ * 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. 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 ``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.
+ */
+
+#include <_ansi.h>
+#include <wchar.h>
+
+/*
+ * Appends src to string dst of size siz (unlike wcsncat, siz is the
+ * full size of dst, not space left).  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns wcslen(initial dst) + wcslen(src); if retval >= siz,
+ * truncation occurred.
+ */
+size_t
+_DEFUN (wcslcat, (dst, src, siz),
+	wchar_t * dst _AND
+	_CONST wchar_t * src _AND
+	size_t siz)
+{
+  wchar_t *d = dst;
+  _CONST wchar_t *s = src;
+  size_t n = siz;
+  size_t dlen;
+
+  /* Find the end of dst and adjust bytes left but don't go past end */
+  while (*d != '\0' && n-- != 0)
+    d++;
+  dlen = d - dst;
+  n = siz - dlen;
+
+  if (n == 0)
+    return (dlen + wcslen (s));
+  while (*s != '\0')
+    {
+      if (n != 1)
+	{
+	  *d++ = *s;
+	  n--;
+	}
+      s++;
+    }
+  *d = '\0';
+
+  return (dlen + (s - src));	/* count does not include NUL */
+}