get_next_line_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils.c                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ialdidi <ialdidi@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/12/06 15:08:16 by ialdidi           #+#    #+#             */
/*   Updated: 2023/12/06 15:08:17 by ialdidi          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

int	ft_strlen(const char *s)
{
	int	i;

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

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

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

char	*ft_strjoin(char const *s1, char const *s2)
{
	char	*str;
	char	*str_ptr;

	if (!s1 || !s2)
		return (NULL);
	str = (char *)malloc(ft_strlen(s1) + ft_strlen(s2) + 1);
	if (!str)
		return (NULL);
	str_ptr = str;
	while (*s1)
		*str++ = *s1++;
	while (*s2)
		*str++ = *s2++;
	*str = '\0';
	return (str_ptr);
}

char	*ft_strdup(const char *str)
{
	char	*ptr;
	char	*string;

	if (!str)
		return (ft_strdup(""));
	ptr = (char *)malloc(ft_strlen(str) + 1);
	if (!ptr)
		return (NULL);
	string = ptr;
	while (*str)
		*ptr++ = *str++;
	*ptr = '\0';
	return (string);
}