minitalk/libft_utils.c at main · bschwitz3/minitalk · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   libft_utils.c                                      :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bschwitz <marvin@42lausanne.ch>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/02/15 15:36:12 by bschwitz          #+#    #+#             */
/*   Updated: 2022/02/15 17:21:52 by bschwitz         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minitalk.h"

void	ft_putchar_fd(char c, int fd)
{
	write(fd, &c, 1);
}

int	ft_isdigit(int c)
{
	if (c >= 48 && c <= 57)
		return (1);
	else
		return (0);
}

int	ft_atoi(const char *str)
{
	long	i;
	long	neg;
	long	num;

	i = 0;
	neg = 0;
	num = 0;
	while (str[i] != '\0' && (str[i] == 32 || str[i] == '\t' || str[i] == '\n'
			|| str[i] == '\r' || str[i] == '\v' || str[i] == '\f'))
		i++;
	if (str[i] != '\0' && str[i] == '-')
	{
		neg = 1;
		i++;
	}
	else if (str[i] == '+')
		i++;
	while (str[i] != '\0' && ft_isdigit(str[i]))
		num = (num * 10) + (str[i++] - '0');
	if (neg == 1)
		return (-num);
	return (num);
}

void	*ft_memset(void *b, int c, size_t len)
{
	size_t	i;

	i = 0;
	while (i < len)
	{
		((unsigned char *)b)[i] = c;
		i++;
	}
	return (b);
}

void	ft_putnbr_fd(int n, int fd)
{
	unsigned int	nbr;

	if (n < 0)
	{
		nbr = (unsigned int)n * -1;
		ft_putchar_fd('-', fd);
	}
	else
		nbr = (unsigned int)n;
	if (nbr > 9)
	{
		ft_putnbr_fd(nbr / 10, fd);
		ft_putnbr_fd(nbr % 10, fd);
	}
	else
		ft_putchar_fd(nbr + '0', fd);
}