ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: hgabriel <hgabriel@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/05/10 10:32:21 by hgabriel          #+#    #+#             */
/*   Updated: 2022/05/10 10:32:27 by hgabriel         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	i = 0;
	if (!s)
		return (0);
	if (ft_strlen(s) < start)
		return (ft_strdup(""));
	if (ft_strlen(s) < len)
		substr = (char *)malloc((ft_strlen(s) - start + 1) * sizeof(char));
	else
		substr = (char *)malloc((len + 1) * sizeof(char));
	if (!substr)
		return (0);
	while (i < len && s[start + i] != '\0')
	{
		substr[i] = s[start + i];
		i++;
	}
	substr[i] = 0;
	return (substr);
}