blob: 1c3a6dd633ea198b76464ab7024d5732c3770bb0 (
plain)
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
|
// Copyright 2017-2021 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#include "EnvUtils.h"
#include <QByteArray>
namespace EnvUtils {
QString getenv(QString name) {
#ifdef Q_OS_WIN
QByteArray buf;
size_t requiredSize = 0;
static_assert(sizeof(wchar_t) == sizeof(ushort), "expected 2-byte wchar_t");
const wchar_t *wname = reinterpret_cast< const wchar_t * >(name.utf16());
// Query the required buffer size (in elements).
if (_wgetenv_s(&requiredSize, 0, 0, wname) != 0) {
return QString();
}
if (requiredSize == 0) {
return QString();
}
// Resize buf to fit the value and put it there.
buf.resize(static_cast< int >(requiredSize * sizeof(wchar_t)));
if (_wgetenv_s(&requiredSize, reinterpret_cast< wchar_t * >(buf.data()), requiredSize, wname) != 0) {
return QString();
}
// Convert the value to QString and return it.
const wchar_t *wbuf = reinterpret_cast< const wchar_t * >(buf.constData());
return QString::fromWCharArray(wbuf);
#else
QByteArray name8bit = name.toLocal8Bit();
char *val = ::getenv(name8bit.constData());
if (!val) {
return QString();
}
return QString::fromLocal8Bit(val);
#endif
}
bool setenv(QString name, QString value) {
#ifdef Q_OS_WIN
return _wputenv_s(reinterpret_cast< const wchar_t * >(name.utf16()),
reinterpret_cast< const wchar_t * >(value.utf16()))
== 0;
#else
const int OVERWRITE = 1;
return ::setenv(name.toLocal8Bit().constData(), value.toLocal8Bit().constData(), OVERWRITE) == 0;
#endif
}
bool waylandIsUsed() {
// If wayland is used, this environment variable is expected to be set
return getenv(QStringLiteral("WAYLAND_DISPLAY")) != "";
}
}; // namespace EnvUtils
|
