ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        ::::::::            */
/*   ft_substr.c                                        :+:    :+:            */
/*                                                     +:+                    */
/*   By: jaberkro <jaberkro@student.codam.nl>         +#+                     */
/*                                                   +#+                      */
/*   Created: 2021/10/22 20:14:58 by jaberkro      #+#    #+#                 */
/*   Updated: 2021/12/01 13:08:26 by jaberkro      ########   odam.nl         */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_substr(char const *s, unsigned int start, size_t len)
{
	char	*out;
	size_t	l;

	if (!s)
		return (NULL);
	l = ft_strlen(s);
	if (start > l)
		return (ft_calloc(1, 1));
	if (len > l)
		len = l;
	out = malloc(len + 1);
	if (out == NULL)
		return (NULL);
	ft_strlcpy(out, s + start, len + 1);
	return (out);
}

/* Allocates (with malloc(3)) and returns a substring
from the string ’s’.
The substring begins at index ’start’ and is of
maximum size ’len’.
 */