get_next_line_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils.c                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: atoof <atoof@student.hive.fi>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/12/29 17:32:35 by atoof             #+#    #+#             */
/*   Updated: 2023/01/05 18:07:51 by atoof            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

void	ft_bzero(void *s, size_t n)
{
	size_t	i;

	i = 0;
	while (i < n)
	{
		((char *)s)[i] = 0;
		i++;
	}
}

void	*ft_calloc(size_t count, size_t size)
{
	void	*pointer;
	size_t	mult;

	mult = count * size;
	if (count > 0 && size > 0)
	{
		if (mult % count != 0 || mult % size != 0)
			return (NULL);
	}
	pointer = malloc(mult);
	if (!pointer)
		return (NULL);
	ft_bzero(pointer, mult);
	return (pointer);
}

char	*ft_strchr(const char *s, int c)
{
	char	*str;

	str = (char *)s;
	while (*str != c)
	{
		if (*str == '\0')
			return (NULL);
		str++;
	}
	return (str);
}

size_t	ft_strlen(const char *c)
{
	size_t	i;

	if (!c)
		return (0);
	i = 0;
	while (c[i])
		i++;
	return (i);
}

char	*ft_strjoin(const char *s1, const char *s2)
{
	int		i;
	int		len1;
	int		len2;
	char	*str;

	if (s1 && s2)
	{
		len1 = ft_strlen(s1);
		len2 = ft_strlen(s2);
		str = (char *)malloc(sizeof(char) * (len1 + len2 + 1));
		if (!str)
			return (NULL);
		i = -1;
		while (s1[++i])
			str[i] = s1[i];
		i = -1;
		while (s2[++i])
		{
			str[len1] = s2[i];
			len1++;
		}
		str[len1] = '\0';
		return (str);
	}
	return (NULL);
}