diff options
Diffstat (limited to 'examples/corelib/serialization/convert/datastreamconverter.cpp')
| -rw-r--r-- | examples/corelib/serialization/convert/datastreamconverter.cpp | 188 |
1 files changed, 30 insertions, 158 deletions
diff --git a/examples/corelib/serialization/convert/datastreamconverter.cpp b/examples/corelib/serialization/convert/datastreamconverter.cpp index c459696b26..ce28fcb98e 100644 --- a/examples/corelib/serialization/convert/datastreamconverter.cpp +++ b/examples/corelib/serialization/convert/datastreamconverter.cpp @@ -1,68 +1,23 @@ -/**************************************************************************** -** -** Copyright (C) 2018 Intel Corporation. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2018 Intel Corporation. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #include "datastreamconverter.h" +#include "debugtextdumper.h" +#include "variantorderedmap.h" #include <QDataStream> -#include <QDebug> -#include <QTextStream> -static const char optionHelp[] = +using namespace Qt::StringLiterals; + +static const char dataStreamOptionHelp[] = "byteorder=host|big|little Byte order to use.\n" - "version=<n> QDataStream version (default: Qt 5.0).\n" + "version=<n> QDataStream version (default: Qt 6.0).\n" ; static const char signature[] = "qds"; -static DataStreamDumper dataStreamDumper; -static DataStreamConverter DataStreamConverter; +static DataStreamConverter dataStreamConverter; +static DebugTextDumper debugTextDumper; QDataStream &operator<<(QDataStream &ds, const VariantOrderedMap &map) { @@ -89,126 +44,44 @@ QDataStream &operator>>(QDataStream &ds, VariantOrderedMap &map) return ds; } - -static QString dumpVariant(const QVariant &v, const QString &indent = QLatin1String("\n")) -{ - QString result; - QString indented = indent + QLatin1String(" "); - - int type = v.userType(); - if (type == qMetaTypeId<VariantOrderedMap>() || type == QMetaType::QVariantMap) { - const auto map = (type == QMetaType::QVariantMap) ? - VariantOrderedMap(v.toMap()) : qvariant_cast<VariantOrderedMap>(v); - - result = QLatin1String("Map {"); - for (const auto &pair : map) { - result += indented + dumpVariant(pair.first, indented); - result.chop(1); // remove comma - result += QLatin1String(" => ") + dumpVariant(pair.second, indented); - - } - result.chop(1); // remove comma - result += indent + QLatin1String("},"); - } else if (type == QMetaType::QVariantList) { - const QVariantList list = v.toList(); - - result = QLatin1String("List ["); - for (const auto &item : list) - result += indented + dumpVariant(item, indented); - result.chop(1); // remove comma - result += indent + QLatin1String("],"); - } else { - QDebug debug(&result); - debug.nospace() << v << ','; - } - return result; -} - -QString DataStreamDumper::name() -{ - return QStringLiteral("datastream-dump"); -} - -Converter::Direction DataStreamDumper::directions() -{ - return Out; -} - -Converter::Options DataStreamDumper::outputOptions() -{ - return SupportsArbitraryMapKeys; -} - -const char *DataStreamDumper::optionsHelp() -{ - return nullptr; -} - -bool DataStreamDumper::probeFile(QIODevice *f) -{ - Q_UNUSED(f); - return false; -} - -QVariant DataStreamDumper::loadFile(QIODevice *f, Converter *&outputConverter) -{ - Q_UNREACHABLE(); - Q_UNUSED(f); - Q_UNUSED(outputConverter); - return QVariant(); -} - -void DataStreamDumper::saveFile(QIODevice *f, const QVariant &contents, const QStringList &options) -{ - Q_UNUSED(options); - QString s = dumpVariant(contents); - s[s.size() - 1] = QLatin1Char('\n'); // replace the comma with newline - - QTextStream out(f); - out << s; -} - DataStreamConverter::DataStreamConverter() { qRegisterMetaType<VariantOrderedMap>(); } -QString DataStreamConverter::name() +QString DataStreamConverter::name() const { - return QStringLiteral("datastream"); + return "datastream"_L1; } -Converter::Direction DataStreamConverter::directions() +Converter::Directions DataStreamConverter::directions() const { - return InOut; + return Direction::InOut; } -Converter::Options DataStreamConverter::outputOptions() +Converter::Options DataStreamConverter::outputOptions() const { return SupportsArbitraryMapKeys; } -const char *DataStreamConverter::optionsHelp() +const char *DataStreamConverter::optionsHelp() const { - return optionHelp; + return dataStreamOptionHelp; } -bool DataStreamConverter::probeFile(QIODevice *f) +bool DataStreamConverter::probeFile(QIODevice *f) const { return f->isReadable() && f->peek(sizeof(signature) - 1) == signature; } -QVariant DataStreamConverter::loadFile(QIODevice *f, Converter *&outputConverter) +QVariant DataStreamConverter::loadFile(QIODevice *f, const Converter *&outputConverter) const { if (!outputConverter) - outputConverter = &dataStreamDumper; + outputConverter = &debugTextDumper; char c; - if (f->read(sizeof(signature) -1) != signature || - !f->getChar(&c) || (c != 'l' && c != 'B')) { - fprintf(stderr, "Could not load QDataStream file: invalid signature.\n"); - exit(EXIT_FAILURE); - } + if (f->read(sizeof(signature) - 1) != signature || !f->getChar(&c) || (c != 'l' && c != 'B')) + qFatal("Could not load QDataStream file: invalid signature."); QDataStream ds(f); ds.setByteOrder(c == 'l' ? QDataStream::LittleEndian : QDataStream::BigEndian); @@ -222,9 +95,10 @@ QVariant DataStreamConverter::loadFile(QIODevice *f, Converter *&outputConverter return result; } -void DataStreamConverter::saveFile(QIODevice *f, const QVariant &contents, const QStringList &options) +void DataStreamConverter::saveFile(QIODevice *f, const QVariant &contents, + const QStringList &options) const { - QDataStream::Version version = QDataStream::Qt_5_0; + QDataStream::Version version = QDataStream::Qt_6_0; auto order = QDataStream::ByteOrder(QSysInfo::ByteOrder); for (const QString &option : options) { const QStringList pair = option.split('='); @@ -249,18 +123,16 @@ void DataStreamConverter::saveFile(QIODevice *f, const QVariant &contents, const continue; } - fprintf(stderr, "Invalid version number '%s': must be a number from 1 to %d.\n", - qPrintable(pair.last()), QDataStream::Qt_DefaultCompiledVersion); - exit(EXIT_FAILURE); + qFatal("Invalid version number '%s': must be a number from 1 to %d.", + qPrintable(pair.last()), QDataStream::Qt_DefaultCompiledVersion); } } - fprintf(stderr, "Unknown QDataStream formatting option '%s'. Available options are:\n%s", - qPrintable(option), optionHelp); - exit(EXIT_FAILURE); + qFatal("Unknown QDataStream formatting option '%s'. Available options are:\n%s", + qPrintable(option), dataStreamOptionHelp); } - char c = order == QDataStream::LittleEndian ? 'l' : 'B'; + char c = order == QDataStream::LittleEndian ? 'l' : 'B'; f->write(signature); f->write(&c, 1); |