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ft_strtrim.c
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ft_strtrim.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strtrim.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: youngmki <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/05/14 04:32:05 by youngmki #+# #+# */
/* Updated: 2021/06/26 18:12:31 by youngmki ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strtrim(char const *s1, char const *set)
{
int start;
int end;
char *res;
start = 0;
end = ft_strlen(s1) - 1;
if (!s1)
return (NULL);
else if (!set)
return (ft_strdup(s1));
while (s1[start] && ft_strchr(set, (int)*(s1 + start)))
start++;
while (s1[end] && ft_strchr(set, (int)*(s1 + end)))
{
if (end < 1)
break ;
end--;
}
if (start > end)
return (ft_strdup(""));
if (!(res = (char *)malloc(sizeof(char) * (end - start + 2))))
return (NULL);
ft_strlcpy(res, s1 + start, end - start + 2);
return (res);
}