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
|
//
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include <uhd/config.hpp>
#include <uhdlib/utils/paths.hpp>
#ifdef BOOST_MSVC
# include <windows.h>
#elif defined(__OpenBSD__)
# include <glob.h>
#else
# include <wordexp.h>
#endif
std::string uhd::path_expandvars(const std::string& path)
{
if (path.empty()) {
return path;
}
#ifdef BOOST_MSVC
constexpr size_t max_pathlen = 4096;
char result[max_pathlen];
const size_t result_len =
ExpandEnvironmentStrings(path.c_str(), &result[0], max_pathlen);
if (result == 0) {
return path;
}
return std::string(result, result + result_len);
#elif defined(__OpenBSD__)
glob_t p;
std::string return_value;
memset(&p, 0, sizeof(p));
if (glob(path.c_str(), GLOB_TILDE, NULL, &p) == 0 && p.gl_pathc > 0) {
return_value = std::string(p.gl_pathv[0]);
} else {
return_value = path;
}
globfree(&p);
return return_value;
#else
wordexp_t p;
std::string return_value;
const int err = wordexp(path.c_str(), &p, 0);
if (err == 0 && p.we_wordc > 0) {
return_value = std::string(p.we_wordv[0]);
} else {
return_value = path;
}
// According to
// https://www.gnu.org/software/libc/manual/html_node/Wordexp-Example.html, p might be
// partially allocated, so we need to free it even if we got a NOSPACE error.
if (err == 0 || err == WRDE_NOSPACE) {
wordfree(&p);
}
return return_value;
#endif
}
|
