/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   e_pipes_next.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/14 17:19:27 by rbousset          #+#    #+#             */
/*   Updated: 2020/02/14 17:19:29 by rbousset         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

#include <libft.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>

#include "e_redirs.h"
#include "s_destroy.h"
#include "s_line.h"
#include "s_lpipes.h"
#include "s_struct.h"
#include "u_utils.h"
#include "u_utils.h"

/*
** TODO: handle execve failed
*/

void	e_pipe_child(char *fullpath[], uint8_t pipe_id, t_com *ptr, t_msh *msh)
{
	uint8_t	bu_id;
	uint8_t	ret;

	e_dup_redirs(ptr, msh);
	if (ft_strncmp(fullpath[pipe_id], "builtin", 8) == 0)
	{
		bu_id = u_get_builtin_id(ptr->bin);
		ret = msh->bu_ptr[bu_id](ptr->argv + 1, msh);
		u_eof_fd(msh->fd);
		s_lpipes_clear(&msh->pipes);
		s_line_clear(&msh->curr);
		s_destroy(msh);
		ft_delwords(fullpath);
		exit(ret);
	}
	else
		execve(fullpath[pipe_id], ptr->argv, msh->envp);
}

size_t	e_get_pipes_count(struct s_lpipes *ptr)
{
	struct s_lpipes	*rptr;
	size_t			pipes;

	rptr = ptr;
	pipes = 0;
	while (rptr->next != NULL)
	{
		rptr = rptr->next;
		pipes++;
	}
	return (pipes);
}

void	e_close_unused_fds(int32_t fd[256][2], size_t pipes)
{
	size_t	i;

	i = 0;
	while (i < pipes && i < 255)
	{
		close(fd[i][E_WRITE_END]);
		close(fd[i][E_READ_END]);
		i++;
	}
}