42_minishell/heredoc.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   heredoc.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/02/17 15:36:26 by cchauvet          #+#    #+#             */
/*   Updated: 2023/02/17 16:21:02 by cchauvet         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libftx/libftx.h"
#include "minishell.h"

int	*ft_get_heredoc()
{
	static int	heredoc;

	return (&heredoc);
}

int	ft_heredoc_creator(char *stop)
{
	int		fds[2];
	char	*line;

	if (pipe(fds) == -1)
		return (-1);
	line = readline("> ");
	while (line != NULL)
	{
		if (ft_strcmp(line, stop) == 0)
			break ;
		ft_putendl_fd(line, fds[1]);
		free(line);
		line = readline("> ");
		if (line == NULL)
		{
			close(fds[0]);
			close(fds[1]);
			return (-1);
		}
	}
	close(fds[1]);
	return (fds[0]);
}

int	ft_heredoc(char *stop)
{
	int	pid;
	int	fd;

	pid = fork();
	if (pid == -1)
		return (-1);
	if (pid == 0)
	{
		fd = ft_heredoc_creator(stop);
		exit (fd);
	}
	else
	{
		*ft_get_heredoc() = pid;
		waitpid(pid, &fd, 0);
	}
	*ft_get_heredoc() = 0;
	return (fd);
}