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ft_strtrim.c
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ft_strtrim.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strtrim.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mcherki <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/18 15:33:01 by mcherki #+# #+# */
/* Updated: 2021/12/05 11:42:13 by mcherki ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static int search_on_char(char c, char const *set)
{
size_t i;
i = 0;
while (set[i])
{
if (set[i] == c)
return (1);
i++;
}
return (0);
}
char *ft_strtrim(char const *s1, char const *set)
{
char *p;
size_t i;
size_t start;
size_t end;
start = 0;
if (!s1 || !set)
return (0);
while (s1[start] && search_on_char(s1[start], set))
start++;
end = ft_strlen(s1);
while (end > start && search_on_char(s1[end - 1], set))
end--;
p = malloc(sizeof(*s1) * (end - start + 1));
if (!p)
return (NULL);
i = 0;
while (start < end)
p[i++] = s1[start++];
p[i] = 0;
return (p);
}