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ft_strtrim.c
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ft_strtrim.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strtrim.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: gpiccion <gpiccion@student.42wolfsburg. +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/21 03:00:21 by gpiccion #+# #+# */
/* Updated: 2021/11/21 03:00:21 by gpiccion ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
// Allocates (with malloc) and returns a copy of 's1' with the chars
// specified in 'set' removed from the beginning and the end of the string.
char *ft_strtrim(char const *s1, char const *set)
{
size_t start;
size_t end;
if (s1)
{
if (!set)
return ((char *)s1);
end = ft_strlen(s1);
if (end < 1)
return (ft_strdup(""));
start = 0;
while (s1[start] && ft_strchr(set, s1[start]))
start++;
while (start < end && ft_strchr(set, s1[end - 1]))
end--;
return (ft_substr(s1, start, end - start));
}
return (NULL);
}