Get_Next_Line/get_next_line_utils_bonus.c at master · devPaidion/Get_Next_Line · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils_bonus.c                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kjungoo <kjungoo@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/09/15 12:38:28 by kjungoo           #+#    #+#             */
/*   Updated: 2022/09/22 19:42:54 by kjungoo          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stdlib.h>

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

	i = 0;
	while (*s)
	{
		i++;
		s++;
	}
	return (i);
}

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

	i = 0;
	while (s[i])
	{
		if (s[i] == c)
		{
			return (1);
		}
		i++;
	}
	return (0);
}

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

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

char	*ft_strdup(const char *s1)
{
	char	*str;
	size_t	i;
	size_t	len;

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

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

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