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
|
/*
* Based on LuaFileSystem : http://www.keplerproject.org/luafilesystem
*
* Copyright © 2003 Kepler Project.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "plugin.h"
#include "rocklibc.h"
#include "lauxlib.h"
#include "luadir.h"
#define DIR_METATABLE "directory metatable"
typedef struct dir_data {
int closed;
DIR *dir;
} dir_data;
static int make_dir (lua_State *L) {
const char *path = luaL_checkstring (L, 1);
lua_pushboolean (L, !rb->mkdir(path));
return 1;
}
static int remove_dir (lua_State *L) {
const char *path = luaL_checkstring (L, 1);
lua_pushboolean (L, !rb->rmdir (path));
return 1;
}
/*
** Directory iterator
*/
static int dir_iter (lua_State *L) {
struct dirent *entry;
dir_data *d = (dir_data *)luaL_checkudata (L, 1, DIR_METATABLE);
luaL_argcheck (L, !d->closed, 1, "closed directory");
if ((entry = rb->readdir (d->dir)) != NULL) {
struct dirinfo info = rb->dir_get_info(d->dir, entry);
lua_pushstring (L, entry->d_name);
lua_pushboolean (L, info.attribute & ATTR_DIRECTORY);
if (lua_toboolean (L, lua_upvalueindex(1))) {
lua_createtable(L, 0, 3);
lua_pushnumber (L, info.attribute);
lua_setfield (L, -2, "attribute");
lua_pushnumber (L, info.size);
lua_setfield (L, -2, "size");
lua_pushnumber (L, info.mtime);
lua_setfield (L, -2, "time");
}
else
{
lua_pushnil(L);
}
return 3;
} else {
/* no more entries => close directory */
rb->closedir (d->dir);
d->closed = 1;
return 0;
}
}
/*
** Closes directory iterators
*/
static int dir_close (lua_State *L) {
dir_data *d = (dir_data *)lua_touserdata (L, 1);
if (!d->closed && d->dir) {
rb->closedir (d->dir);
d->closed = 1;
}
return 0;
}
/*
** Factory of directory iterators
*/
static int dir_iter_factory (lua_State *L) {
const char *path = luaL_checkstring (L, 1);
dir_data *d;
lua_settop(L, 2); /* index 2 (bool) return attribute table */
lua_pushcclosure(L, &dir_iter, 1);
d = (dir_data *) lua_newuserdata (L, sizeof(dir_data));
d->closed = 0;
luaL_getmetatable (L, DIR_METATABLE);
lua_setmetatable (L, -2);
d->dir = rb->opendir (path);
if (d->dir == NULL)
{
luaL_error (L, "cannot open %s: %d", path, errno);
}
return 2;
}
/*
** Creates directory metatable.
*/
static int dir_create_meta (lua_State *L) {
luaL_newmetatable (L, DIR_METATABLE);
lua_createtable(L, 0, 2);
lua_pushcfunction (L, dir_iter);
lua_setfield (L, -2, "next");
lua_pushcfunction (L, dir_close);
lua_setfield (L, -2, "close");
/* set its __index field */
lua_setfield (L, -2, "__index");
/* set its __gc field */
lua_pushcfunction (L, dir_close);
lua_setfield (L, -2, "__gc");
return 1;
}
static const struct luaL_reg fslib[] = {
{"dir", dir_iter_factory},
{"mkdir", make_dir},
{"rmdir", remove_dir},
{NULL, NULL},
};
int luaopen_luadir (lua_State *L) {
dir_create_meta (L);
luaL_register (L, LUA_DIRLIBNAME, fslib);
return 1;
}
|
