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1 files changed, 39 insertions, 0 deletions

diff --git a/lib/ft_strtrim.c b/lib/ft_strtrim.c
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+++ b/lib/ft_strtrim.c
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+/*
+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);
+}