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ft_substr.c
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ft_substr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_substr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: julmuntz <julmuntz@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/05/19 18:19:09 by julmuntz #+# #+# */
/* Updated: 2022/06/02 22:17:57 by julmuntz ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_substr(char const *s, unsigned int start, size_t len)
{
size_t i;
size_t size;
char *str;
if (s == NULL)
return (NULL);
if (start >= ft_strlen(s))
return (ft_strdup(""));
size = ft_strlen(s) - start;
if (len > size)
str = (char *)malloc(sizeof(char) * (size + 1));
else
str = (char *)malloc(sizeof(char) * (len + 1));
if (str == NULL)
return (NULL);
i = 0;
while (i < len && start < ft_strlen(s))
str[i++] = s[start++];
str[i] = 0;
return (str);
}
/*
#include <stdio.h>
int main(void)
{
char *src;
char *dst;
int chr;
int len;
src = "ABCDEFGHIJKLMNOPQRSTUVXYZ";
chr = 11;
len = 16;
dst = ft_substr(src, chr, len);
printf("%s\n", dst);
free(dst);
return (0);
}
*/