ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mbouderr <mbouderr@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/10/27 03:06:06 by mbouderr          #+#    #+#             */
/*   Updated: 2022/10/28 21:29:23 by mbouderr         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

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