ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: obouizi <marvin@42.fr>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/26 15:02:09 by obouizi           #+#    #+#             */
/*   Updated: 2024/11/02 11:33:21 by obouizi          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

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