std library function almost done, tested with libft-unit-tests

1 files changed, 29 insertions, 0 deletions

diff --git a/ft_strnstr.c b/ft_strnstr.c
new file mode 100644
index 0000000..2308a57
--- /dev/null
+++ b/ft_strnstr.c
@@ -0,0 +1,29 @@
+#include <stdlib.h>
+#include <string.h>
+#include "libft.h"
+
+char   *ft_strnstr(const char *big, const char *little, size_t len)
+{
+	size_t  i;
+    size_t  j;
+    size_t  min_len;
+
+    min_len = len > ft_strlen(little) ? ft_strlen(little) : len;
+	if (min_len == 0)
+		return ((char*)big);
+    i = 0;
+	while (big[i])
+	{
+		j = 0;
+		while (little[j] && big[i + j])
+		{
+			if (little[j] != big[i + j])
+                break ;
+			j++;
+            if (j == min_len)
+                return ((char*)(big + i));
+		}
+		i++;
+	}
+	return (NULL);
+}