1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* 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>
#ifdef __linux__
# include <linux/limits.h>
#else
# include <limits.h>
#endif
#include "d_define.h"
#include "p_redirs.h"
#include "p_redirs_heredoc.h"
#include "s_lredir.h"
#include "s_struct.h"
#include "s_lredir.h"
#include "u_utils.h"
#include "u_parse.h"
#include "u_vars.h"
static void p_append_redir(const char path[],
int32_t fd_rdr[],
t_com *com,
t_msh *msh)
{
struct s_lredir *new;
int32_t fd;
int8_t redir;
fd = fd_rdr[FD];
redir = fd_rdr[RDR];
new = s_lredir_new(path, fd, redir);
if (new == NULL)
{
return ;
}
new->heredoc = NULL;
if (redir == -2 || redir == -3)
{
new->heredoc = p_get_heredoc(path, redir, msh);
}
s_lredir_add_back(&com->rdr, new);
}
static size_t p_get_path(char path[],
struct s_rdr_tmp tmp,
t_msh *msh)
{
char h[PATH_MAX];
size_t pos[2];
size_t hlen;
size_t len;
hlen = 0;
tmp.ptr += ft_abs(tmp.redir);
while (*tmp.ptr != C_NUL && ft_iswhitespace(*tmp.ptr) == TRUE)
tmp.ptr++;
if (*tmp.ptr == C_TILDE && u_get_var_value(h, "$HOME", PATH_MAX, msh) == 0)
{
ft_strlcpy(path, h, PATH_MAX);
hlen = ft_strlen(h);
tmp.ptr++;
}
pos[0] = (tmp.ptr - tmp.word);
while (*tmp.ptr != C_NUL && ft_iswhitespace(*tmp.ptr) == FALSE
&& u_is_not_escaped(tmp.word, tmp.ptr) == TRUE)
tmp.ptr++;
pos[1] = (tmp.ptr - tmp.word);
len = (pos[1] - pos[0]);
len = ((hlen + len + 1) > PATH_MAX) ? (PATH_MAX - 1) : (len);
ft_strlcpy(path + hlen, tmp.word + pos[0], len + 1);
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 void p_get_redir(char word[], char *ptr, t_com *com, t_msh *msh)
{
struct s_rdr_tmp tmp;
char path[PATH_MAX];
size_t pos[2];
int32_t fd_rdr[2];
pos[0] = 0;
if ((fd_rdr[FD] = p_get_fd(word, ptr)) <= 0)
fd_rdr[FD] = STDOUT_FILENO;
fd_rdr[RDR] = (*ptr == '>') ? (1) : (-1);
fd_rdr[RDR] = (fd_rdr[RDR] == 1 && *(ptr + 1) == '>') ? (2) : (fd_rdr[1]);
fd_rdr[RDR] = (fd_rdr[RDR] == 1 && *(ptr + 1) == '&') ? (3) : (fd_rdr[1]);
fd_rdr[RDR] = (fd_rdr[RDR] == -1 && *(ptr + 1) == '<') ? (-2) : (fd_rdr[1]);
fd_rdr[RDR] = (fd_rdr[RDR] == -2 && *(ptr + 2) == '-') ? (-3) : (fd_rdr[1]);
pos[0] = (fd_rdr[FD] == STDOUT_FILENO) ?
(ptr - word) : ((ptr - word) - ft_intlen(fd_rdr[FD]));
tmp.word = word;
tmp.ptr = ptr;
tmp.redir = fd_rdr[RDR];
pos[1] = p_get_path(path, tmp, msh);
(void)ft_memmove(word + pos[0],
word + pos[1], (ft_strlen(word + pos[1]) + 1) * sizeof(char));
p_append_redir(path, fd_rdr, com, msh);
}
int8_t p_redirs(char word[], t_com **com, t_msh *msh)
{
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)
{
p_get_redir(word, ptr, *com, msh);
ptr = word;
}
ptr++;
}
return (0);
}
|
