LIBFT/ft_strsub.c at master · dbadeev/LIBFT · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strsub.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: loram <marvin@42.fr>                       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/09/17 21:48:36 by loram             #+#    #+#             */
/*   Updated: 2019/09/22 21:03:19 by loram            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strsub(char const *s, unsigned int start, size_t len)
{
	char		*substr;
	size_t		i;

	if (s == NULL)
		return (NULL);
	if (start > ft_strlen(s))
		return (0);
	substr = ft_strnew(len);
	if (substr == NULL)
		return (NULL);
	i = 0;
	while ((i < len) && (s[start + i] != '\0'))
	{
		substr[i] = s[start + i];
		i++;
	}
	return (substr);
}