get_next_line_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils.c                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mheinke <mheinke@student.42abudhabi.ae>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/09/13 11:09:26 by mheinke           #+#    #+#             */
/*   Updated: 2023/09/19 10:27:32 by mheinke          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

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

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

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

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

char	*ft_strdup(const char *s)
{
	int		i;
	int		j;
	char	*str;

	i = 0;
	j = ft_strlen(s);
	str = (char *)malloc(sizeof(*str) * (j + 1));
	if (!str)
		return (NULL);
	while (i < j)
	{
		str[i] = s[i];
		i++;
	}
	str[i] = '\0';
	return (str);
}

char	*ft_strjoin(char *buffer, char *content)
{
	size_t	i;
	size_t	j;
	char	*result;

	if (!buffer)
		return (ft_strdup(content));
	if (!content)
		return (ft_strdup(buffer));
	i = 0;
	result = (char *)malloc(sizeof(char) * (ft_strlen(buffer)
				+ ft_strlen(content)) + 1);
	if (!result)
		return (NULL);
	while (buffer && buffer[i])
	{
		result[i] = buffer[i];
		i++;
	}
	j = 0;
	while (content && content[j])
		result[i++] = content[j++];
	result[i] = '\0';
	free(buffer);
	return (result);
}