1 files changed, 37 insertions, 0 deletions
diff --git a/libft/ft_strnstr.c b/libft/ft_strnstr.c
new file mode 100644
index 0000000..93427d2
--- /dev/null
+++ b/libft/ft_strnstr.c
@@ -0,0 +1,37 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strnstr.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: kdx    <kdx   @student.42angouleme.fr      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2022/09/28 00:07:22 by kdx               #+#    #+#             */
+/*   Updated: 2022/10/14 02:26:20 by kdx              ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_strnstr(const char *big, const char *little, size_t len)
+{
+	size_t	i;
+	size_t	little_len;
+	size_t	cmp_len;
+
+	little_len = ft_strlen(little);
+	if (little_len == 0 || (big == little && little_len <= len))
+		return ((char *)big);
+	if (len == 0)
+		return (NULL);
+	i = 0;
+	while (big[i] != '\0' && i < len && little_len <= len - i)
+	{
+		cmp_len = len - i;
+		if (little_len < cmp_len)
+			cmp_len = little_len;
+		if (ft_strncmp(big + i, little, cmp_len) == 0)
+			return ((char *)big + i);
+		i += 1;
+	}
+	return (NULL);
+}