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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* s_lredir.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 <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#ifdef __linux__
# include <linux/limits.h>
#else
# include <limits.h>
#endif
#include "d_define.h"
#include "s_struct.h"
static t_lredir *s_lredir_last(struct s_lredir *lredir)
{
while (lredir->next != NULL)
{
lredir = lredir->next;
}
return (lredir);
}
void s_lredir_add_back(t_lredir **lredir, t_lredir *new)
{
struct s_lredir *tmp;
if (*lredir == NULL)
{
*lredir = new;
}
else
{
tmp = s_lredir_last(*lredir);
tmp->next = new;
}
}
void s_lredir_clear(struct s_lredir **lredir)
{
struct s_lredir *renext;
struct s_lredir *tmp;
if (lredir == NULL)
return ;
tmp = *lredir;
while (tmp != NULL)
{
renext = tmp->next;
if (tmp->heredoc != NULL)
ft_memdel((void*)&tmp->heredoc);
ft_memdel((void*)&tmp);
tmp = renext;
}
*lredir = NULL;
}
static int32_t s_get_right_fd(const char path[])
{
char *ptr;
int32_t rfd;
ptr = (char*)path;
while (ft_isdigit(*ptr) == TRUE)
ptr++;
if (*ptr != C_NUL)
{
ft_dprintf(STDERR_FILENO, "minishell: %s: ambigous redirect\n", path);
return (-1);
}
rfd = ft_atoi(path);
if (fcntl(rfd, F_GETFD) == -1)
{
ft_dprintf(STDERR_FILENO, "minishell: %s: %s\n", path, strerror(errno));
return (-1);
}
return (rfd);
}
struct s_lredir *s_lredir_new(const char path[], int32_t fd, int8_t redir)
{
struct s_lredir *rdr;
if ((rdr = (struct s_lredir*)malloc(sizeof(struct s_lredir))) == NULL)
return (NULL);
rdr->fd = fd;
rdr->right_fd = -1;
if (redir == 3 && (rdr->right_fd = s_get_right_fd(path)) == -1)
{
ft_memdel((void*)&rdr);
return (NULL);
}
rdr->redir = redir;
rdr->next = NULL;
ft_strlcpy(rdr->path, path, PATH_MAX);
return (rdr);
}
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