utils1.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   utils1.c                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rrangwan <rrangwan@42abudhabi.ae>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/25 09:05:53 by rrangwan          #+#    #+#             */
/*   Updated: 2022/04/25 09:54:53 by rrangwan         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "so_long.h"

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

void	ft_putstr_fd(char *s, int fd)
{
	int	i;

	if (!s)
		return ;
	i = 0;
	while (s[i])
	{
		ft_putchar_fd(s[i], fd);
		i++;
	}
}

int	ft_strlen(char *str)
{
	int	i;

	i = 0;
	while (str[i])
		i++;
	return (i);
}

char	*ft_strchr(const char *s, int c)
{
	unsigned char	a;
	unsigned int	i;

	a = (unsigned char)c;
	i = 0;
	while (s[i] != '\0')
	{
		if (s[i] == a)
			return ((char *)(s + i));
		i++;
	}
	if (a == '\0')
		return ((char *)(s + i));
	return (NULL);
}

int	ft_strncmp(const char *s1, const char *s2, size_t n)
{
	size_t	i;

	i = 0;
	while (((unsigned char)s1[i] == (unsigned char)s2[i]) && (i < n) && \
			((unsigned char)s1[i] != '\0') && ((unsigned char)s2[i] != '\0'))
		i++;
	if (i == n)
		return (0);
	else
		return ((unsigned char)s1[i] - (unsigned char)s2[i]);
}