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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* p_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 <unistd.h>
#include <limits.h>
#include "d_define.h"
#include "s_lredir.h"
#include "s_struct.h"
#include "s_lredir.h"
#include "u_utils.h"
#include "u_parse.h"
static void p_append_redir(const char path[],
int32_t fd,
int8_t redir,
t_com *com)
{
struct s_lredir *new;
new = s_lredir_new(path, fd, redir);
if (new == NULL)
{
return ;
}
s_lredir_add_back(&com->rdr, new);
}
static size_t p_get_path(char path[],
char *ptr,
const char word[],
int8_t redir)
{
size_t pos[2];
size_t end;
pos[0] = 0;
pos[1] = 0;
redir = (redir < 0) ? (-redir) : (redir);
ptr += redir;
while (*ptr != C_NUL && ft_iswhitespace(*ptr) == TRUE)
ptr++;
pos[0] = (ptr - word);
while (*ptr != C_NUL &&
ft_iswhitespace(*ptr) == FALSE &&
u_is_not_escaped(word, ptr) == TRUE)
ptr++;
pos[1] = (ptr - word);
end = pos[1];
while (pos[1] - pos[0] > PATH_MAX)
end--;
ft_strlcpy(path, word + pos[0], end);
return (pos[1]);
}
static int32_t p_get_fd(const char word[], char *ptr)
{
char digit[255];
char *tmp;
if (*ptr == '<' || (ptr - word) == 1)
return (0);
tmp = ptr;
tmp -= 1;
if (ft_isdigit(*tmp) == FALSE)
return (0);
while ((tmp - word) > 0 && ft_isdigit(*tmp) == TRUE)
tmp--;
if ((tmp - word) > 0 && ft_iswhitespace(*tmp) == FALSE)
return (0);
else
{
tmp += ((tmp - word) > 0) ? (1) : (0);
ft_strlcpy(digit, word + (tmp - word), (ptr - tmp) + 1);
}
return (ft_atoi(digit));
}
static int8_t p_get_redir(char word[], char *ptr, t_com *com)
{
char path[PATH_MAX];
size_t pos[2];
int32_t fd;
int8_t redir;
pos[0] = 0;
pos[1] = 0;
if ((fd = p_get_fd(word, ptr)) <= 0)
fd = STDOUT_FILENO;
redir = (*ptr == '>') ? (1) : (-1);
redir = (redir == 1 && *(ptr + 1) == '>') ? (2) : (redir);
redir = (redir == -1 && *(ptr + 1) == '<') ? (-2) : (redir);
if (fd == STDOUT_FILENO)
pos[0] = (ptr - word);
else
pos[0] = (ptr - word) - ft_intlen(fd);
pos[1] = p_get_path(path, ptr, word, redir);
(void)ft_memmove(word + pos[0],
word + pos[1], (ft_strlen(word + pos[1]) + 1) * sizeof(char));
p_append_redir(path, fd, redir, com);
return (0);
}
int8_t p_redirs(char word[], t_com **com)
{
char *ptr;
t_quote_mode mode;
mode = Q_NONE;
ptr = (char *)word;
while (*ptr != C_NUL)
{
if (*ptr == C_DQUOTE)
mode = u_meet_dquote(word, ptr, mode);
else if (*ptr == C_SQUOTE)
mode = u_meet_squote(word, ptr, mode);
else if (mode == Q_NONE && (*ptr == '<' || *ptr == '>') == 1)
{
if (p_get_redir(word, ptr, *com) != 0)
return (1);
ptr = word;
}
ptr++;
}
return (0);
}
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