data tree FEATURE initial implementation of YANG data support
diff --git a/src/compat.c b/src/compat.c
new file mode 100644
index 0000000..7c4d660
--- /dev/null
+++ b/src/compat.c
@@ -0,0 +1,42 @@
+/**
+ * @file compat.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief Compatibility functions - implemented basic functions which are not available on all the platforms.
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#include "common.h"
+
+#include <string.h>
+
+#ifndef HAVE_STRNSTR
+
+char *
+strnstr(const char *s, const char *find, size_t slen)
+{
+ char c, sc;
+ size_t len;
+
+ if ((c = *find++) != '\0') {
+ len = strlen(find);
+ do {
+ do {
+ if (slen-- < 1 || (sc = *s++) == '\0')
+ return (NULL);
+ } while (sc != c);
+ if (len > slen)
+ return (NULL);
+ } while (strncmp(s, find, len) != 0);
+ s--;
+ }
+ return ((char *)s);
+}
+
+#endif