37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_substr.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: rparodi <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/11/09 13:54:42 by rparodi #+# #+# */
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/* Updated: 2024/10/31 18:10:59 by rparodi ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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/**
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* @brief Extracts a substring from a string.
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*
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* @param s The source string.
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* @param start The starting index of the substring.
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* @param len The maximum length of the substring.
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*
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* @return A pointer to the substring, or NULL if memory allocation fails.
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*/
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char *ft_substr(char const *s, unsigned int start, size_t len)
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{
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char *str;
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if (start >= ft_strlen(s))
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return (ft_strdup(""));
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if (len + start > (ft_strlen(s)))
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len = ft_strlen(s) - start;
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str = (char *)malloc(len + 1);
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if (!str || !s)
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return (free(str), ft_strdup(""));
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ft_strlcpy(str, s + start, len + 1);
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return (str);
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}
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