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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* e_redirs.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 <stdint.h>
#include <stddef.h>
#include <fcntl.h>
#include <unistd.h>
#include "f_fail.h"
#include "s_destroy.h"
#include "s_line.h"
#include "s_struct.h"
static void e_redir_minus_two(struct s_lredir *ptr)
{
int32_t fd[2];
if (ptr->heredoc == NULL)
{
return ;
}
pipe(fd);
dup2(fd[0], STDIN_FILENO);
ft_dprintf(fd[1], "%s", ptr->heredoc);
close(fd[1]);
close(fd[0]);
}
static void e_redir_minus_one(struct s_lredir *ptr, t_msh *msh)
{
int32_t fd;
if ((fd = open(ptr->path, O_RDONLY)) == -1)
{
f_redir(ptr->path, msh);
return ;
}
dup2(fd, STDIN_FILENO);
close(fd);
}
static void e_redir_plus_one(struct s_lredir *ptr, t_msh *msh)
{
int32_t fd;
if ((fd = open(ptr->path, O_CREAT | O_TRUNC | O_WRONLY, 0644)) == -1)
{
f_redir(ptr->path, msh);
return ;
}
dup2(fd, ptr->fd);
close(fd);
}
static void e_redir_plus_two(struct s_lredir *ptr, t_msh *msh)
{
int32_t fd;
if ((fd = open(ptr->path, O_CREAT | O_APPEND | O_WRONLY, 0644)) == -1)
{
f_redir(ptr->path, msh);
return ;
}
dup2(fd, ptr->fd);
close(fd);
}
void e_dup_redirs(const t_com *com, t_msh *msh)
{
struct s_lredir *ptr;
ptr = com->rdr;
while (ptr != NULL)
{
if (ptr->redir == -2)
{
e_redir_minus_two(ptr);
}
else if (ptr->redir == -1)
{
e_redir_minus_one(ptr, msh);
}
else if (ptr->redir == 1)
{
e_redir_plus_one(ptr, msh);
}
else if (ptr->redir == 2)
{
e_redir_plus_two(ptr, msh);
}
ptr = ptr->next;
}
}
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