qt5base-lts/examples/corelib/serialization/convert/nullconverter.cpp

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/****************************************************************************
**
** Copyright (C) 2018 Intel Corporation.
** Contact: https://www.qt.io/licensing/
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** This file is part of the examples of the Qt Toolkit.
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#include "nullconverter.h"
static NullConverter nullConverter;
Converter* Converter::null = &nullConverter;
QString NullConverter::name()
{
return QLatin1String("null");
}
Converter::Direction NullConverter::directions()
{
return Out;
}
Converter::Options NullConverter::outputOptions()
{
return SupportsArbitraryMapKeys;
}
const char *NullConverter::optionsHelp()
{
return nullptr;
}
bool NullConverter::probeFile(QIODevice *f)
{
Q_UNUSED(f);
return false;
}
QVariant NullConverter::loadFile(QIODevice *f, Converter *&outputConverter)
{
Q_UNUSED(f);
Q_UNUSED(outputConverter);
outputConverter = this;
return QVariant();
}
void NullConverter::saveFile(QIODevice *f, const QVariant &contents, const QStringList &options)
{
if (!options.isEmpty()) {
fprintf(stderr, "Unknown option '%s' to null output. This format has no options.\n", qPrintable(options.first()));
exit(EXIT_FAILURE);
}
Q_UNUSED(f);
Q_UNUSED(contents);
}