ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: fgalan-n <fgalan-n@student.42malaga.com>   +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/09/26 13:35:39 by fgalan-n          #+#    #+#             */
/*   Updated: 2022/10/04 11:51:07 by fgalan-n         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_substr(char const *s, unsigned int start, size_t len)
{
	size_t	i;
	char	*str;

	if (!s)
		return (NULL);
	if (start >= ft_strlen(s))
		return ((char *)ft_calloc(1, sizeof(char)));
	if (ft_strlen(s) <= start + len)
		str = malloc(sizeof(char) * (ft_strlen(s) - start + 1));
	else
		str = malloc(sizeof(char) * (len + 1));
	if (!str)
		return (NULL);
	i = 0;
	while (s[start] && (i < len))
	{
		str[i] = s[start];
		i++;
		start++;
	}
	str[i] = '\0';
	return (str);
}