Pipex/split.c at main · EVBLOOD/Pipex · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   split.c                                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: sakllam <sakllam@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/30 13:46:33 by sakllam           #+#    #+#             */
/*   Updated: 2021/12/06 13:04:29 by sakllam          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "pipex.h"

static size_t	ft_count(char const *s, char c)
{
	int	i;
	int	count;

	i = 0;
	count = 0;
	while (s[i] != '\0')
	{
		while (s[i] && s[i] == c)
			i++;
		if (s[i] != '\0')
		{
			if ((s[i - 1] == c || i == 0))
				count++;
			i++;
		}
	}
	return (count);
}

static char	**free_tab(char **tab)
{
	int	i;

	i = 0;
	while (tab[i])
		free(tab[i++]);
	free(tab);
	return (NULL);
}

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

	i = 0;
	if (!s)
		return (NULL);
	if (ft_strlen(s + start) < len)
		p = (char *) malloc((ft_strlen(s + start) + 1) * sizeof(char));
	else
		p = (char *) malloc(((int) len + 1) * sizeof(char));
	if (!p)
		return (NULL);
	while (i < (int) len && s[i + start] && !(start >= ft_strlen(s)))
	{
		p[i] = s[i + start];
		i++;
	}
	p[i] = '\0';
	return (p);
}

char	**ft_split(char const *s, char c)
{
	char		**tab;
	size_t		i;
	size_t		len;

	i = 0;
	if (!s)
		return (0);
	tab = (char **)malloc((ft_count(s, c) + 1) * sizeof(*tab));
	if (!tab)
		return (tab);
	while (*s)
	{
		while (*s && *s == c)
			s++;
		len = 0;
		while (s[len] && s[len] != c)
			len++;
		if (len != 0)
			tab[i++] = ft_substr(s, 0, len);
		if (len != 0 && !tab[i - 1])
			return (free_tab(tab));
		s += len;
	}
	tab[i] = NULL;
	return (tab);
}