66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
|
|
Copyright (C) 2021 Srivats P.
|
|
|
|
This file is part of "Ostinato"
|
|
|
|
This 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 3 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, see <http://www.gnu.org/licenses/>
|
|
*/
|
|
|
|
#include "linuxutils.h"
|
|
|
|
#include <QFile>
|
|
#include <QTextStream>
|
|
|
|
// Reads a text file (size < 4K) and returns content as a string
|
|
// A terminating \n will be removed
|
|
// There's no way to distinguish an empty file and error while reading
|
|
QString readTextFile(QString fileName)
|
|
{
|
|
QFile file(fileName);
|
|
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
|
|
qWarning("Can't read %s", qUtf8Printable(fileName));
|
|
return QString();
|
|
}
|
|
|
|
if (file.size() > 4096) {
|
|
qWarning("Can't read %s - too large (%lld)",
|
|
qUtf8Printable(fileName), file.size());
|
|
return QString();
|
|
}
|
|
|
|
QTextStream in(&file);
|
|
QString text = in.readAll();
|
|
file.close();
|
|
|
|
if (text.endsWith('\n'))
|
|
text.chop(1);
|
|
|
|
return text;
|
|
}
|
|
|
|
// Reads value from /sys/class/net/<device>/<attrib-path>
|
|
// and returns as string
|
|
// XXX: reading from sysfs is discouraged
|
|
QString sysfsAttrib(const char *device, const char *attribPath)
|
|
{
|
|
return readTextFile(QString("/sys/class/net/%1/%2")
|
|
.arg(device).arg(attribPath));
|
|
}
|
|
|
|
// Convenience overload
|
|
QString sysfsAttrib(QString device, const char *attribPath)
|
|
{
|
|
return sysfsAttrib(qPrintable(device), attribPath);
|
|
}
|