/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils.c                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: sadjigui <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/06/28 15:54:00 by sadjigui          #+#    #+#             */
/*   Updated: 2021/06/28 16:04:36 by sadjigui         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

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

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

char	*ft_strdup(char const *s1)
{
	int		i;
	char	*dest;

	dest = malloc(sizeof(char) * ft_strlen(s1) + 1);
	if (!dest)
		return (0);
	i = 0;
	while (s1[i] != 0)
	{
		dest[i] = s1[i];
		i++;
	}
	dest[i] = 0;
	return (dest);
}

char	*ft_substr(char const *s, unsigned int start, size_t len)
{
	char	*str;
	size_t	i;
	size_t	j;

	i = -1;
	if (!s)
		return (NULL);
	j = ft_strlen(s);
	if (!len || j <= start)
		return (ft_strdup(""));
	str = (char *)malloc(sizeof(char) * len + 1);
	if (!str)
		return (NULL);
	j = 0;
	while (s[++i] && j < len)
	{
		if (i >= start)
			str[j++] = s[i];
	}
	str[j] = '\0';
	return (str);
}

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

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

char	*ft_check(char *s, char c)
{
	int	i;

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