1 files changed, 92 insertions, 0 deletions
diff --git a/ft_strtrim.c b/ft_strtrim.c
new file mode 100644
index 0000000..fe217f6
--- /dev/null
+++ b/ft_strtrim.c
@@ -0,0 +1,92 @@
+/*
+Libft Copyright (C) 2026 yctct
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include "libft.h"
+
+char	*ft_strtrim(char const *s1, char const *set)
+{
+	int		i;
+	char	*ptr;
+	int		start;
+	int		end;
+	int		slen;
+
+	i = 0;
+	while (s1[i] && ft_strchr(set, s1[i]))
+		i++;
+	start = i;
+	slen = ft_strlen(s1);
+	i = 0;
+	while (s1[slen - i - 1] && ft_strchr(set, s1[slen - i - 1]))
+		i++;
+	end = i;
+	ptr = ft_substr(s1, start, (slen - start - end));
+	return (ptr);
+}
+/*
+#include <stdio.h>
+
+int	main(void)
+{
+		printf("%s\n", ft_strtrim("   xxxtripouille", " x"));
+		printf("%s\n", ft_strtrim("tripouille   xxx", " x"));
+		printf("%s\n", ft_strtrim("   xxxtripouille   xxx", " x"));
+		printf("%s\n", ft_strtrim("   xxx   xxx", " x"));
+		printf("%s\n", ft_strtrim("", "123"));
+		printf("%s\n", ft_strtrim("123", ""));
+		printf("%s\n", ft_strtrim("", ""));
+		printf("%s\n", ft_strtrim("abcdba", "acb"));
+		return (0);
+}
+
+#include <stdio.h>
+
+int	main(void)
+{
+	char	s1[] = "lorem \n ipsum \t dolor \n sit \t amet";
+	char	s2[] = "lorem ipsum dolor sit amet \n \t ";
+	char	s3[] = " \n \t lorem ipsum dolor sit amet";
+	char	s4[] = "  \n  \t  lorem \n ipsum \t dolor \n sit \t amet  \t \n ";
+	char	s5[] = "          ";
+
+		char    set [] = "\t \n";
+	printf("%s\n", ft_strtrim(s1, set));
+	printf("\n");
+	printf("%s\n", ft_strtrim(s2, set));
+	printf("\n");
+	printf("%s\n", ft_strtrim(s3, set));
+	printf("\n");
+	printf("%s\n", ft_strtrim(s4, set));
+	printf("\n");
+	printf("%s\n", ft_strtrim(s5, set));
+	printf("\n");
+		return (0);
+}
+
+int	main(void)
+{
+	char const	s1[]= "asasHello, World.asas";
+	char const	s2[]= "asasasHello, World.asasasasas";
+	char const	s3[]= "abcabcabcabcHelloabc, World.abcabcabc";
+	char const	set1[]= "as";
+	char const	set1bis[]= "as";
+	char const	set3[]= "abc";
+	printf("%s\n", ft_strtrim(s1, set1));
+	printf("%s\n", ft_strtrim(s2, set1bis));
+	printf("%s\n", ft_strtrim(s3, set3));
+}
+*/