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
|
/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2016 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "a2io.h"
#include "util.h"
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else // _WIN32
#include <sys/statvfs.h>
#endif
namespace aria2 {
namespace util {
namespace filesystem {
space_info space(const char* path, std::error_code& ec)
{
space_info rv{static_cast<uintmax_t>(-1), static_cast<uintmax_t>(-1),
static_cast<uintmax_t>(-1)};
if (!path || !*path) {
path = ".";
}
#ifdef _WIN32
ULARGE_INTEGER sp_avail, sp_free, sp_cap;
auto wpath = utf8ToWChar(path);
if (GetDiskFreeSpaceExW(wpath.c_str(), &sp_avail, &sp_cap, &sp_free)) {
rv.capacity = static_cast<uintmax_t>(sp_cap.QuadPart);
rv.available = static_cast<uintmax_t>(sp_avail.QuadPart);
rv.free = static_cast<uintmax_t>(sp_free.QuadPart);
ec.clear();
}
else {
ec.assign(GetLastError(), std::system_category());
}
#else // _WIN32
struct statvfs st;
if (!statvfs(path, &st)) {
rv.capacity = static_cast<uintmax_t>(st.f_blocks) * st.f_frsize;
rv.free = static_cast<uintmax_t>(st.f_bfree) * st.f_frsize;
rv.available = static_cast<uintmax_t>(st.f_bavail) * st.f_frsize;
ec.clear();
}
else {
ec.assign(errno, std::system_category());
}
#endif // _WIN32
return rv;
}
space_info space_downwards(const char* path, std::error_code& ec)
{
auto rv = space(path, ec);
if (!ec) {
return rv;
}
std::string spath(path);
for (;;) {
if (spath.empty()) {
break;
}
#if _WIN32
if (spath == "\\\\") {
// raw UNC prefix
break;
}
#endif
auto pos = spath.find_last_of("/\\");
if (pos == std::string::npos) {
spath = "";
}
else {
spath = spath.substr(0, pos);
}
rv = space(spath.c_str(), ec);
if (!ec) {
break;
}
}
return rv;
}
} // namespace filesystem
} // namespace util
} // namespace aria2
|
