73d1476fb1
I made a clazy automated check that replaced the use of QVariant::Type by the equivalent in QMetaType. This has been deprecated since Qt 5.0, but many uses were not yet removed. In addition, there was some manual changes to fix the compilation errors. Adapted the Private API of QDateTimeParser and QMimeDataPrivate and adjust QDateTimeEdit and QSpinBox. QVariant(QVariant::Invalid) in qstylesheet made no sense. But note that in QVariant::save, we actually wanted to use the non-user type. In the SQL module, many changes were actually reverted because the API still expects QVarient::Type. Change-Id: I98c368490e4ee465ed3a3b63bda8b8eaa50ea67e Reviewed-by: Lars Knoll <lars.knoll@qt.io>
515 lines
17 KiB
C++
515 lines
17 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2018 Intel Corporation.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "xmlconverter.h"
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#include <QBitArray>
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#include <QtCborCommon>
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#include <QFile>
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#include <QFloat16>
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#include <QMetaType>
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#include <QRegularExpression>
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#include <QUrl>
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#include <QXmlStreamReader>
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#include <QXmlStreamWriter>
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static const char optionHelp[] =
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"compact=no|yes Use compact XML form.\n";
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static XmlConverter xmlConverter;
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static QVariant variantFromXml(QXmlStreamReader &xml, Converter::Options options);
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static QVariantList listFromXml(QXmlStreamReader &xml, Converter::Options options)
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{
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QVariantList list;
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while (!xml.atEnd() && !(xml.isEndElement() && xml.name() == QLatin1String("list"))) {
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xml.readNext();
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switch (xml.tokenType()) {
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case QXmlStreamReader::StartElement:
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list << variantFromXml(xml, options);
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continue;
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case QXmlStreamReader::EndElement:
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continue;
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case QXmlStreamReader::Comment:
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// ignore comments
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continue;
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case QXmlStreamReader::Characters:
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// ignore whitespace
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if (xml.isWhitespace())
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continue;
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Q_FALLTHROUGH();
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default:
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break;
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}
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fprintf(stderr, "%lld:%lld: Invalid XML %s '%s'.\n",
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xml.lineNumber(), xml.columnNumber(),
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qPrintable(xml.tokenString()), qPrintable(xml.name().toString()));
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exit(EXIT_FAILURE);
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}
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xml.readNext();
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return list;
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}
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static VariantOrderedMap::value_type mapEntryFromXml(QXmlStreamReader &xml, Converter::Options options)
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{
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QVariant key, value;
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while (!xml.atEnd() && !(xml.isEndElement() && xml.name() == QLatin1String("entry"))) {
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xml.readNext();
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switch (xml.tokenType()) {
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case QXmlStreamReader::StartElement:
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if (value.isValid())
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break;
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if (key.isValid())
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value = variantFromXml(xml, options);
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else
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key = variantFromXml(xml, options);
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continue;
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case QXmlStreamReader::EndElement:
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continue;
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case QXmlStreamReader::Comment:
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// ignore comments
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continue;
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case QXmlStreamReader::Characters:
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// ignore whitespace
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if (xml.isWhitespace())
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continue;
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Q_FALLTHROUGH();
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default:
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break;
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}
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fprintf(stderr, "%lld:%lld: Invalid XML %s '%s'.\n",
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xml.lineNumber(), xml.columnNumber(),
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qPrintable(xml.tokenString()), qPrintable(xml.name().toString()));
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exit(EXIT_FAILURE);
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}
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return { key, value };
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}
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static QVariant mapFromXml(QXmlStreamReader &xml, Converter::Options options)
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{
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QVariantMap map1;
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VariantOrderedMap map2;
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while (!xml.atEnd() && !(xml.isEndElement() && xml.name() == QLatin1String("map"))) {
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xml.readNext();
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switch (xml.tokenType()) {
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case QXmlStreamReader::StartElement:
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if (xml.name() == QLatin1String("entry")) {
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auto pair = mapEntryFromXml(xml, options);
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if (options & Converter::SupportsArbitraryMapKeys)
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map2.append(pair);
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else
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map1.insert(pair.first.toString(), pair.second);
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continue;
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}
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break;
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case QXmlStreamReader::EndElement:
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continue;
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case QXmlStreamReader::Comment:
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// ignore comments
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continue;
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case QXmlStreamReader::Characters:
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// ignore whitespace
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if (xml.isWhitespace())
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continue;
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Q_FALLTHROUGH();
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default:
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break;
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}
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fprintf(stderr, "%lld:%lld: Invalid XML %s '%s'.\n",
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xml.lineNumber(), xml.columnNumber(),
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qPrintable(xml.tokenString()), qPrintable(xml.name().toString()));
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exit(EXIT_FAILURE);
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}
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xml.readNext();
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if (options & Converter::SupportsArbitraryMapKeys)
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return QVariant::fromValue(map2);
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return map1;
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}
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static QVariant variantFromXml(QXmlStreamReader &xml, Converter::Options options)
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{
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QStringRef name = xml.name();
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if (name == QLatin1String("list"))
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return listFromXml(xml, options);
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if (name == QLatin1String("map"))
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return mapFromXml(xml, options);
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if (name != QLatin1String("value")) {
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fprintf(stderr, "%lld:%lld: Invalid XML key '%s'.\n",
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xml.lineNumber(), xml.columnNumber(), qPrintable(name.toString()));
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exit(EXIT_FAILURE);
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}
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QXmlStreamAttributes attrs = xml.attributes();
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QStringRef type = attrs.value(QLatin1String("type"));
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forever {
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xml.readNext();
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if (xml.isComment())
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continue;
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if (xml.isCDATA() || xml.isCharacters() || xml.isEndElement())
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break;
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fprintf(stderr, "%lld:%lld: Invalid XML %s '%s'.\n",
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xml.lineNumber(), xml.columnNumber(),
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qPrintable(xml.tokenString()), qPrintable(name.toString()));
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exit(EXIT_FAILURE);
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}
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QStringRef text = xml.text();
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if (!xml.isCDATA())
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text = text.trimmed();
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QVariant result;
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bool ok;
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if (type.isEmpty()) {
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// ok
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} else if (type == QLatin1String("number")) {
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// try integer first
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qint64 v = text.toLongLong(&ok);
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if (ok) {
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result = v;
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} else {
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// let's see floating point
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double d = text.toDouble(&ok);
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result = d;
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if (!ok) {
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fprintf(stderr, "%lld:%lld: Invalid XML: could not interpret '%s' as a number.\n",
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xml.lineNumber(), xml.columnNumber(), qPrintable(text.toString()));
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exit(EXIT_FAILURE);
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}
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}
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} else if (type == QLatin1String("bytes")) {
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QByteArray data = text.toLatin1();
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QStringRef encoding = attrs.value("encoding");
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if (encoding == QLatin1String("base64url")) {
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result = QByteArray::fromBase64(data, QByteArray::Base64UrlEncoding);
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} else if (encoding == QLatin1String("hex")) {
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result = QByteArray::fromHex(data);
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} else if (encoding.isEmpty() || encoding == QLatin1String("base64")) {
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result = QByteArray::fromBase64(data);
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} else {
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fprintf(stderr, "%lld:%lld: Invalid XML: unknown encoding '%s' for bytes.\n",
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xml.lineNumber(), xml.columnNumber(), qPrintable(encoding.toString()));
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exit(EXIT_FAILURE);
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}
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} else if (type == QLatin1String("string")) {
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result = text.toString();
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} else if (type == QLatin1String("null")) {
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result = QVariant::fromValue(nullptr);
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} else if (type == QLatin1String("CBOR simple type")) {
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result = QVariant::fromValue(QCborSimpleType(text.toShort()));
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} else if (type == QLatin1String("bits")) {
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QBitArray ba;
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ba.resize(text.size());
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qsizetype n = 0;
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for (qsizetype i = 0; i < text.size(); ++i) {
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QChar c = text.at(i);
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if (c == '1') {
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ba.setBit(n++);
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} else if (c == '0') {
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++n;
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} else if (!c.isSpace()) {
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fprintf(stderr, "%lld:%lld: Invalid XML: invalid bit string '%s'.\n",
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xml.lineNumber(), xml.columnNumber(), qPrintable(text.toString()));
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exit(EXIT_FAILURE);
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}
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}
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ba.resize(n);
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result = ba;
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} else {
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int id = QMetaType::UnknownType;
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if (type == QLatin1String("datetime"))
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id = QMetaType::QDateTime;
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else if (type == QLatin1String("url"))
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id = QMetaType::QUrl;
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else if (type == QLatin1String("uuid"))
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id = QMetaType::QUuid;
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else if (type == QLatin1String("regex"))
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id = QMetaType::QRegularExpression;
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else
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id = QMetaType::type(type.toLatin1());
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if (id == QMetaType::UnknownType) {
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fprintf(stderr, "%lld:%lld: Invalid XML: unknown type '%s'.\n",
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xml.lineNumber(), xml.columnNumber(), qPrintable(type.toString()));
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exit(EXIT_FAILURE);
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}
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result = text.toString();
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if (!result.convert(id)) {
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fprintf(stderr, "%lld:%lld: Invalid XML: could not parse content as type '%s'.\n",
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xml.lineNumber(), xml.columnNumber(), qPrintable(type.toString()));
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exit(EXIT_FAILURE);
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}
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}
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do {
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xml.readNext();
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} while (xml.isComment() || xml.isWhitespace());
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if (!xml.isEndElement()) {
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fprintf(stderr, "%lld:%lld: Invalid XML %s '%s'.\n",
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xml.lineNumber(), xml.columnNumber(),
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qPrintable(xml.tokenString()), qPrintable(name.toString()));
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exit(EXIT_FAILURE);
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}
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xml.readNext();
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return result;
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}
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static void variantToXml(QXmlStreamWriter &xml, const QVariant &v)
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{
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int type = v.userType();
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if (type == QMetaType::QVariantList) {
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QVariantList list = v.toList();
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xml.writeStartElement("list");
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for (const QVariant &v : list)
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variantToXml(xml, v);
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xml.writeEndElement();
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} else if (type == QMetaType::QVariantMap || type == qMetaTypeId<VariantOrderedMap>()) {
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const VariantOrderedMap map = (type == QMetaType::QVariantMap) ?
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VariantOrderedMap(v.toMap()) :
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qvariant_cast<VariantOrderedMap>(v);
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xml.writeStartElement("map");
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for (const auto &pair : map) {
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xml.writeStartElement("entry");
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variantToXml(xml, pair.first);
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variantToXml(xml, pair.second);
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xml.writeEndElement();
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}
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xml.writeEndElement();
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} else {
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xml.writeStartElement("value");
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QString typeString = QStringLiteral("type");
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switch (type) {
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case QMetaType::Short:
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case QMetaType::UShort:
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case QMetaType::Int:
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case QMetaType::UInt:
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case QMetaType::Long:
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case QMetaType::ULong:
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case QMetaType::LongLong:
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case QMetaType::ULongLong:
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case QMetaType::Float:
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case QMetaType::Double:
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xml.writeAttribute(typeString, "number");
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xml.writeCharacters(v.toString());
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break;
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case QMetaType::QByteArray:
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xml.writeAttribute(typeString, "bytes");
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xml.writeAttribute("encoding", "base64");
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xml.writeCharacters(QString::fromLatin1(v.toByteArray().toBase64()));
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break;
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case QMetaType::QString:
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xml.writeAttribute(typeString, "string");
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xml.writeCDATA(v.toString());
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break;
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case QMetaType::Bool:
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xml.writeAttribute(typeString, "bool");
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xml.writeCharacters(v.toString());
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break;
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case QMetaType::Nullptr:
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xml.writeAttribute(typeString, "null");
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break;
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case QMetaType::UnknownType:
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break;
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case QMetaType::QDate:
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case QMetaType::QTime:
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case QMetaType::QDateTime:
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xml.writeAttribute(typeString, "dateime");
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xml.writeCharacters(v.toString());
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break;
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case QMetaType::QUrl:
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xml.writeAttribute(typeString, "url");
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xml.writeCharacters(v.toUrl().toString(QUrl::FullyEncoded));
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break;
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case QMetaType::QUuid:
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xml.writeAttribute(typeString, "uuid");
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xml.writeCharacters(v.toString());
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break;
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case QMetaType::QBitArray:
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xml.writeAttribute(typeString, "bits");
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xml.writeCharacters([](const QBitArray &ba) {
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QString result;
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for (qsizetype i = 0; i < ba.size(); ++i) {
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if (i && i % 72 == 0)
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result += '\n';
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result += QLatin1Char(ba.testBit(i) ? '1' : '0');
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}
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return result;
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}(v.toBitArray()));
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break;
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case QMetaType::QRegularExpression:
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xml.writeAttribute(typeString, "regex");
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xml.writeCharacters(v.toRegularExpression().pattern());
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break;
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default:
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if (type == qMetaTypeId<qfloat16>()) {
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xml.writeAttribute(typeString, "number");
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xml.writeCharacters(QString::number(float(qvariant_cast<qfloat16>(v))));
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} else if (type == qMetaTypeId<QCborSimpleType>()) {
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xml.writeAttribute(typeString, "CBOR simple type");
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xml.writeCharacters(QString::number(int(qvariant_cast<QCborSimpleType>(v))));
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} else {
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// does this convert to string?
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const char *typeName = v.typeName();
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QVariant copy = v;
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if (copy.convert(QMetaType::QString)) {
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xml.writeAttribute(typeString, QString::fromLatin1(typeName));
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xml.writeCharacters(copy.toString());
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} else {
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fprintf(stderr, "XML: don't know how to serialize type '%s'.\n", typeName);
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exit(EXIT_FAILURE);
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}
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}
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}
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xml.writeEndElement();
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}
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}
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QString XmlConverter::name()
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{
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return QStringLiteral("xml");
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}
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Converter::Direction XmlConverter::directions()
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{
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return InOut;
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}
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Converter::Options XmlConverter::outputOptions()
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{
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return SupportsArbitraryMapKeys;
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}
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const char *XmlConverter::optionsHelp()
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{
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return optionHelp;
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}
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bool XmlConverter::probeFile(QIODevice *f)
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{
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if (QFile *file = qobject_cast<QFile *>(f)) {
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if (file->fileName().endsWith(QLatin1String(".xml")))
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return true;
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}
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return f->isReadable() && f->peek(5) == "<?xml";
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}
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QVariant XmlConverter::loadFile(QIODevice *f, Converter *&outputConverter)
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{
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if (!outputConverter)
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outputConverter = this;
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QXmlStreamReader xml(f);
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xml.readNextStartElement();
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QVariant v = variantFromXml(xml, outputConverter->outputOptions());
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if (xml.hasError()) {
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fprintf(stderr, "XML error: %s", qPrintable(xml.errorString()));
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exit(EXIT_FAILURE);
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}
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return v;
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}
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void XmlConverter::saveFile(QIODevice *f, const QVariant &contents, const QStringList &options)
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{
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bool compact = false;
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for (const QString &s : options) {
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if (s == QLatin1String("compact=no")) {
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compact = false;
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} else if (s == QLatin1String("compact=yes")) {
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compact = true;
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} else {
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fprintf(stderr, "Unknown option '%s' to XML output. Valid options are:\n%s", qPrintable(s), optionHelp);
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exit(EXIT_FAILURE);
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}
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}
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QXmlStreamWriter xml(f);
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xml.setAutoFormatting(!compact);
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xml.writeStartDocument();
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variantToXml(xml, contents);
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xml.writeEndDocument();
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}
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