From 3ec03badf3ec71dd545a8c4dbd3c1c8bb01b3d02 Mon Sep 17 00:00:00 2001
From: Jonas 'Sortie' Termansen <sortie@maxsi.org>
Date: Sun, 24 Mar 2013 00:43:59 +0100
Subject: [PATCH] Add wcsncat(3).

---
 libc/Makefile        |  1 +
 libc/include/wchar.h |  2 +-
 libc/wcsncat.cpp     | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 libc/wcsncat.cpp

diff --git a/libc/Makefile b/libc/Makefile
index a44a1419..ee36bdf5 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -136,6 +136,7 @@ wcschr.o \
 wcscmp.o \
 wcscpy.o \
 wcslen.o \
+wcsncat.o \
 wctomb.o \
 wctype.o \
 
diff --git a/libc/include/wchar.h b/libc/include/wchar.h
index a9c4e6d1..598ef303 100644
--- a/libc/include/wchar.h
+++ b/libc/include/wchar.h
@@ -69,6 +69,7 @@ wchar_t* wcschrnul(const wchar_t*, wchar_t);
 int wcscmp(const wchar_t*, const wchar_t*);
 wchar_t* wcscpy(wchar_t* restrict, const wchar_t* restrict);
 size_t wcslen(const wchar_t*);
+wchar_t* wcsncat(wchar_t* restrict, const wchar_t* restrict, size_t);
 
 /* TODO: These are not implemented in sortix libc yet. */
 #if defined(__SORTIX_SHOW_UNIMPLEMENTED)
@@ -109,7 +110,6 @@ size_t wcsxfrm(wchar_t* restrict, const wchar_t* restrict, size_t);
 unsigned long long wcstoull(const wchar_t* restrict, wchar_t** restrict, int);
 unsigned long wcstoul(const wchar_t* restrict, wchar_t** restrict, int);
 wchar_t* fgetws(wchar_t* restrict, int, FILE* restrict);
-wchar_t* wcsncat(wchar_t* restrict, const wchar_t* restrict, size_t);
 wchar_t* wcsncpy(wchar_t* restrict, const wchar_t* restrict, size_t);
 wchar_t* wcspbrk(const wchar_t*, const wchar_t*);
 wchar_t* wcsrchr(const wchar_t*, wchar_t);
diff --git a/libc/wcsncat.cpp b/libc/wcsncat.cpp
new file mode 100644
index 00000000..1d78ac81
--- /dev/null
+++ b/libc/wcsncat.cpp
@@ -0,0 +1,35 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix C Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix C Library is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    wcsncat.cpp
+    Appends parts of a string onto another string.
+
+*******************************************************************************/
+
+#include <wchar.h>
+
+extern "C" wchar_t* wcsncat(wchar_t* dest, const wchar_t* src, size_t n)
+{
+	size_t dest_len = wcslen(dest);
+	size_t i;
+	for ( i = 0; i < n && src[i] != L'\0'; i++ )
+		dest[dest_len + i] = src[i];
+	dest[dest_len + i] = L'\0';
+	return dest;
+}