get_next_line_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils.c                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: waraissi <waraissi@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/11/13 19:35:44 by waraissi          #+#    #+#             */
/*   Updated: 2022/11/17 18:17:54 by waraissi         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

size_t	ft_strlen(char *str)
{
	size_t	i;

	i = 0;
	if (!str)
		return (0);
	while (str[i] != '\0')
	{
		i++;
	}
	return (i);
}

size_t	ft_strlcpy(char *dst, char *src, size_t n)
{
	size_t	i;

	i = 0;
	if (dst == NULL || n == 0)
		return (ft_strlen(src));
	while (src[i] && i < n - 1)
	{
		dst[i] = src[i];
		i++;
	}
	dst[i] = '\0';
	return (ft_strlen(src));
}

char	*ft_strdup(char *str)
{
	char	*p;

	p = malloc((ft_strlen(str) + 1) * sizeof(char));
	if (!p)
		return (NULL);
	ft_strlcpy(p, str, ft_strlen(str) + 1);
	return (p);
}

char	*ft_strjoin(char *s1, char *s2)
{
	size_t	i;
	size_t	j;
	char	*p;

	i = 0;
	j = 0;
	if (!s2)
		return (NULL);
	p = malloc(ft_strlen(s1) + ft_strlen(s2) + 1);
	if (!p)
		return (NULL);
	while (s1[i])
	{
		p[i] = s1[i];
		i++;
	}
	while (s2[j])
	{
		p[i + j] = s2[j];
		j++;
	}
	p[i + j] = 0;
	return (free(s1), s1 = NULL, p);
}