X-Git-Url: https://git.saurik.com/apple/libplatform.git/blobdiff_plain/e39c3b4b1d65e3593d0e74f799230d571e52d4fa..438624e04d57192b9d4dd7a6083a0ccd59a5a95f:/src/string/generic/strncpy.c

diff --git a/src/string/generic/strncpy.c b/src/string/generic/strncpy.c
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+++ b/src/string/generic/strncpy.c
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+/*
+ * Copyright (c) 2011 Apple, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <platform/string.h>
+
+#if !_PLATFORM_OPTIMIZED_STRNCPY
+
+char *
+_platform_strncpy(char * restrict dst, const char * restrict src, size_t maxlen) {
+    const size_t srclen = _platform_strnlen(src, maxlen);
+    if (srclen < maxlen) {
+        //  The stpncpy() and strncpy() functions copy at most maxlen
+        //  characters from src into dst.
+        _platform_memmove(dst, src, srclen);
+        //  If src is less than maxlen characters long, the remainder
+        //  of dst is filled with '\0' characters.
+        _platform_memset(dst+srclen, 0, maxlen-srclen);
+    } else {
+        //  Otherwise, dst is not terminated.
+        _platform_memmove(dst, src, maxlen);
+    }
+    //  The strcpy() and strncpy() functions return dst.
+    return dst;
+}
+
+#if VARIANT_STATIC
+char *
+strncpy(char * restrict dst, const char * restrict src, size_t maxlen) {
+	return _platform_strncpy(dst, src, maxlen);
+}
+#endif
+
+#endif