Settings: unify duplicated code
[lxde/liblxqt.git] / lxqtprogramfinder.cpp
1 /* BEGIN_COMMON_COPYRIGHT_HEADER
2 * (c)LGPL2+
3 *
4 * LXQt - a lightweight, Qt based, desktop toolset
5 * http://razor-qt.org
6 *
7 * Copyright (C) 2013 Alec Moskvin <alecm@gmx.com>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 *
23 * END_COMMON_COPYRIGHT_HEADER */
24
25 #include "lxqtprogramfinder.h"
26 #include <wordexp.h>
27 #include <QDir>
28 #include <QFileInfo>
29
30 using namespace LXQt;
31
32 LXQT_API bool ProgramFinder::programExists(const QString& command)
33 {
34 QString program = programName(command);
35 if (program[0] == QChar('/'))
36 {
37 QFileInfo fi(program);
38 return fi.isExecutable() && fi.isFile();
39 }
40
41 QString path = qgetenv("PATH");
42 foreach (const QString& dirName, path.split(":", QString::SkipEmptyParts))
43 {
44 QFileInfo fi(QDir(dirName), program);
45 if (fi.isExecutable() && fi.isFile())
46 return true;
47 }
48 return false;
49 }
50
51 LXQT_API QStringList ProgramFinder::findPrograms(const QStringList& commands)
52 {
53 QStringList availPrograms;
54 foreach (const QString& program, commands)
55 if (programExists(program))
56 availPrograms.append(program);
57 return availPrograms;
58 }
59
60 LXQT_API QString ProgramFinder::programName(const QString& command)
61 {
62 wordexp_t we;
63 if (wordexp(command.toLocal8Bit().constData(), &we, WRDE_NOCMD) == 0)
64 if (we.we_wordc > 0)
65 return QString(we.we_wordv[0]);
66 return QString();
67 }