ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: atoof <atoof@student.hive.fi>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/11/08 14:08:01 by atoof             #+#    #+#             */
/*   Updated: 2022/11/18 13:26:28 by atoof            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

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