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NOISSUE make sure saving config files is atomic

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This commit is contained in:
Petr Mrázek 2015-02-21 00:21:19 +01:00
parent a53f8d506e
commit b8a8b09796
1 changed files with 22 additions and 5 deletions
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27
logic/settings/INIFile.cpp
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@ -18,6 +18,8 @@
#include <QFile>
#include <QTextStream>
#include <QStringList>
#include <QSaveFile>
#include <QDebug>
INIFile::INIFile()
{
@ -72,10 +74,14 @@ QString INIFile::escape(QString orig)
bool INIFile::saveFile(QString fileName)
{
// TODO Handle errors.
QFile file(fileName);
file.open(QIODevice::WriteOnly);
QTextStream out(&file);
QSaveFile file(fileName);
if(!file.open(QIODevice::WriteOnly))
{
qCritical() << "Unable to open INI config file" << fileName << "for saving";
return false;
}
QByteArray outArray;
QTextStream out(&outArray);
out.setCodec("UTF-8");
for (Iterator iter = begin(); iter != end(); iter++)
@ -84,7 +90,18 @@ bool INIFile::saveFile(QString fileName)
value = escape(value);
out << iter.key() << "=" << value << "\n";
}
if(file.write(outArray) != outArray.size())
{
qCritical() << "Unable to write to the INI config file" << fileName;
file.cancelWriting();
return false;
}
if(!file.commit())
{
qCritical() << "Unable to commit the INI config file" << fileName;
file.cancelWriting();
return false;
}
return true;
}