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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtVersit module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qvcard30writer_p.h"
#include <QtCore/qbuffer.h>
#include <QtCore/qregularexpression.h>
#include <QtCore/qvariant.h>
#include <QtCore/qurl.h>
#include <QTextCodec>
#include "qversitproperty.h"
#include "qversitutils_p.h"
#include <algorithm>
QT_BEGIN_NAMESPACE_VERSIT
/*! Constructs a writer. */
QVCard30Writer::QVCard30Writer(QVersitDocument::VersitType type) : QVersitDocumentWriter(type)
{
mPropertyNameMappings.insert(
QStringLiteral("X-NICKNAME"),QStringLiteral("NICKNAME"));
mPropertyNameMappings.insert(
QStringLiteral("X-IMPP"),QStringLiteral("IMPP"));
}
/*! Destroys a writer. */
QVCard30Writer::~QVCard30Writer()
{
}
/*!
* Encodes the \a property and writes it to the device.
*/
void QVCard30Writer::encodeVersitProperty(const QVersitProperty& property)
{
QVersitProperty modifiedProperty(property);
QString name = mPropertyNameMappings.value(property.name(),property.name());
modifiedProperty.setName(name);
encodeGroupsAndName(modifiedProperty);
QVariant variant(modifiedProperty.variantValue());
if (variant.metaType().id() == QMetaType::QByteArray) {
modifiedProperty.insertParameter(QStringLiteral("ENCODING"), QStringLiteral("b"));
} else if (variant.metaType().id() == QMetaType::QUrl) {
variant = QVariant(variant.toUrl().toString());
}
encodeParameters(modifiedProperty.parameters());
writeString(QStringLiteral(":"));
QString renderedValue;
QByteArray renderedBytes;
if (variant.canConvert<QVersitDocument>()) {
QVersitDocument embeddedDocument = variant.value<QVersitDocument>();
QByteArray data;
QBuffer buffer(&data);
buffer.open(QIODevice::WriteOnly);
QVCard30Writer subWriter(mType);
subWriter.setCodec(mCodec);
subWriter.setDevice(&buffer);
subWriter.encodeVersitDocument(embeddedDocument);
QString documentString(mCodec->toUnicode(data));
backSlashEscape(&documentString);
renderedValue = documentString;
} else if (variant.metaType().id() == QMetaType::QString) {
renderedValue = variant.toString();
if (property.valueType() != QVersitProperty::PreformattedType) {
backSlashEscape(&renderedValue);
}
} else if (variant.metaType().id() == QMetaType::QStringList) {
// We need to backslash escape and concatenate the values in the list
QStringList values = property.variantValue().toStringList();
QString separator;
if (property.valueType() == QVersitProperty::CompoundType) {
separator = QStringLiteral(";");
} else {
if (property.valueType() != QVersitProperty::ListType) {
qWarning("Property: %s, variant value is a QStringList but the property's value type is neither "
"CompoundType or ListType", property.name().toLatin1().constData());
}
// Assume it's a ListType
separator = QStringLiteral(",");
}
bool first = true;
foreach (QString value, values) {
if (!(value.isEmpty() && property.valueType() == QVersitProperty::ListType)) {
if (!first) {
renderedValue += separator;
}
backSlashEscape(&value);
renderedValue += value;
first = false;
}
}
} else if (variant.metaType().id() == QMetaType::QByteArray) {
if (mCodecIsAsciiCompatible) // optimize by not converting to unicode
renderedBytes = variant.toByteArray().toBase64();
else
renderedValue = QLatin1String(variant.toByteArray().toBase64().data());
}
if (renderedBytes.isEmpty())
writeString(renderedValue);
else
writeBytes(renderedBytes);
writeCrlf();
}
/*!
* Encodes the \a parameters and writes it to the device.
*/
void QVCard30Writer::encodeParameters(const QMultiHash<QString,QString>& parameters)
{
// Sort the parameter names to yield deterministic ordering
QList<QString> names = parameters.uniqueKeys();
std::sort(names.begin(), names.end());
foreach (QString nameString, names) {
writeString(QStringLiteral(";"));
QStringList values = parameters.values(nameString);
backSlashEscape(&nameString);
writeString(nameString);
writeString(QStringLiteral("="));
for (int i=0; i<values.size(); i++) {
if (i > 0)
writeString(QStringLiteral(","));
QString value = values.at(i);
backSlashEscape(&value);
writeString(value);
}
}
}
/*!
* Performs backslash escaping for line breaks (CRLFs), semicolons, backslashes and commas according
* to RFC 2426. This is called on parameter names and values and property values.
* Colons ARE NOT escaped because the examples in RFC2426 suggest that they shouldn't be.
*/
void QVCard30Writer::backSlashEscape(QString* text)
{
static const QString m1(QStringLiteral("([;,\\\\])"));
static const QString r1(QStringLiteral("\\\\1"));
static const QString m2(QStringLiteral("\r\n|\r|\n"));
static const QString r2(QStringLiteral("\\n"));
/* replaces ; with \;
, with \,
\ with \\
*/
text->replace(QRegularExpression(m1), r1);
// replaces any CRLFs with \n
text->replace(QRegularExpression(m2), r2);
}
QT_END_NAMESPACE_VERSIT
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