ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bcaffere <bcaffere@student.21-school.ru    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/05/03 16:52:42 by bcaffere          #+#    #+#             */
/*   Updated: 2021/05/03 17:54:02 by bcaffere         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

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