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"
#include <stdlib.h>

int	*ft_get_heredoc()
{
	static int	heredoc;

	return (&heredoc);
}

int	ft_heredoc_creator(char *stop, int fd)
{
	char	*line;

	line = readline("> ");
	while (line != NULL)
	{
		if (ft_strcmp(line, stop) == 0)
			break ;
		ft_putendl_fd(line, fd);
		free(line);
		line = readline("> ");
		if (line == NULL)
			return (1);
	}
	return (0);
}

int	ft_heredoc(char *stop)
{
	int		pid;
	int		fds[2];
	int		exit_code;

	if (pipe(fds) == -1)
		return (-1);
	pid = fork();
	if (pid == -1)
		return (-1);
	if (pid == 0)
	{
		exit_code = ft_heredoc_creator(stop, fds[1]);
		exit (exit_code + 1);
	}
	else
	{
		*ft_get_heredoc() = pid;
		waitpid(pid, &exit_code, 0);
		*ft_get_heredoc() = 0;
		close(fds[1]);
		return (fds[0]);
	}
}