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ft_strtrim.c
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ft_strtrim.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strtrim.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: pvaladar <pvaladar@student.42lisboa.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/02/22 15:23:05 by pvaladar #+# #+# */
/* Updated: 2022/03/10 16:39:20 by pvaladar ### ########.fr */
/* */
/* ************************************************************************** */
// Function name | ft_strtrim
// Prototype | char *ft_strtrim(char const *s1, char const *set);
// Turn in files | -
// Parameters | s1: The string to be trimmed.
// | set: The reference set of characters to trim.
// Return value | The trimmed string.
// | NULL if the allocation fails.
// External functs. | malloc
// Description | Allocates (with malloc(3)) and returns a copy of ’s1’
// | with the characters specified in ’set’ removed from the
// | beginning and the end of the string.
#include "libft.h" // size_t is defined in header <stdlib.h>
char *ft_strtrim(char const *s1, char const *set)
{
size_t i;
if (!s1 || !set)
return (NULL);
while (*s1 && ft_strchr(set, *s1))
s1++;
i = ft_strlen(s1);
while (i && ft_strchr(set, s1[i]))
i--;
return (ft_substr(s1, 0, i + 1));
}