get_next_line_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils.c                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: uercan <uercan@student.42kocaeli.com.t>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/02/27 18:09:30 by uercan            #+#    #+#             */
/*   Updated: 2022/02/28 11:25:37 by uercan           ###   ########.tr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

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

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

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

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

char	*ft_strjoin(char *s1, char *s2)
{
	int		i;
	int		j;
	char	*s3;

	if (!s1)
	{
		s1 = (char *)malloc(1 * sizeof(char));
		s1[0] = '\0';
	}
	if (!s1 || !s2)
		return (NULL);
	s3 = (char *)malloc(ft_strlen(s1) + ft_strlen(s2) + 1);
	if (!s3)
		return (NULL);
	i = -1;
	while (s1[++i] != 0)
		s3[i] = s1[i];
	j = -1;
	while (s2[++j] != 0)
	{
		s3[i + j] = s2[j];
	}
	s3[i + j] = 0;
	free (s1);
	return (s3);
}