diff -r e4ebb16b39ea -r 603d3f8b6302 plugins/versit/backuphandler/backupvcardhandler.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/versit/backuphandler/backupvcardhandler.cpp	Mon Oct 04 01:37:06 2010 +0300
@@ -0,0 +1,387 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QList>
+#include <QString>
+#include <QTextStream>
+#include <QUrl>
+#include "backupvcardhandler.h"
+#include "qcontact.h"
+#include "qcontactdetail.h"
+#include "qversitdocument.h"
+#include "qversitproperty.h"
+
+QTM_USE_NAMESPACE
+
+/*
+ * This is a map from Versit group names to the details that were generated from properties with the
+ * said groups.  Multiple details can be associated with a single group.
+ */
+class DetailGroupMap
+{
+public:
+    QList<QContactDetail> detailsInGroup(const QString& groupName) const;
+    void insert(const QString& groupName, const QContactDetail& detail);
+    void update(const QContactDetail& detail);
+    void clear();
+
+private:
+    QHash<int, QString> mDetailGroupName; // detailid -> group name
+    QHash<int, QContactDetail> mDetailById; // detailid -> detail
+};
+
+/* See QVersitContactImporter::createBackupHandler() */
+class BackupVCardHandler : public QVersitContactHandler
+{
+public:
+    BackupVCardHandler();
+    void propertyProcessed(const QVersitDocument& document,
+                           const QVersitProperty& property,
+                           const QContact& contact,
+                           bool* alreadyProcessed,
+                           QList<QContactDetail>* updatedDetails);
+    void documentProcessed(const QVersitDocument& document,
+                           QContact* contact);
+    void detailProcessed(const QContact& contact,
+                         const QContactDetail& detail,
+                         const QVersitDocument& document,
+                         QSet<QString>* processedFields,
+                         QList<QVersitProperty>* toBeRemoved,
+                         QList<QVersitProperty>* toBeAdded);
+    void contactProcessed(const QContact& contact,
+                          QVersitDocument* document);
+
+private:
+    static QVariant deserializeValue(const QVersitProperty& property);
+    static void serializeValue(QVersitProperty* property, const QVariant& value);
+    DetailGroupMap mDetailGroupMap; // remembers which details came from which groups
+    int mDetailNumber;
+};
+
+Q_DEFINE_LATIN1_CONSTANT(PropertyName, "X-NOKIA-QCONTACTFIELD");
+Q_DEFINE_LATIN1_CONSTANT(DetailDefinitionParameter, "DETAIL");
+Q_DEFINE_LATIN1_CONSTANT(FieldParameter, "FIELD");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameter, "DATATYPE");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterVariant, "VARIANT");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterDate, "DATE");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterDateTime, "DATETIME");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterTime, "TIME");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterBool, "BOOL");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterInt, "INT");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterUInt, "UINT");
+Q_DEFINE_LATIN1_CONSTANT(DatatypeParameterUrl, "URL");
+Q_DEFINE_LATIN1_CONSTANT(GroupPrefix, "G");
+
+QSet<QString> BackupVCardHandlerFactory::profiles() const
+{
+    QSet<QString> retval;
+    retval.insert(QVersitContactHandlerFactory::ProfileBackup);
+    return retval;
+}
+
+QString BackupVCardHandlerFactory::name() const
+{
+    return QLatin1String("com.nokia.qt.mobility.versit.backuphandler");
+}
+
+int BackupVCardHandlerFactory::index() const
+{
+    // Prefer to run this plugin last.
+    return -1;
+}
+
+QVersitContactHandler* BackupVCardHandlerFactory::createHandler() const
+{
+    return new BackupVCardHandler();
+}
+
+Q_EXPORT_PLUGIN2(qtversit_backuphandler, BackupVCardHandlerFactory);
+
+/*
+ * Returns a list of details generated from a Versit group.
+ */
+QList<QContactDetail> DetailGroupMap::detailsInGroup(const QString& groupName) const
+{
+    QList<int> detailIds = mDetailGroupName.keys(groupName);
+    QList<QContactDetail> details;
+    foreach (int detailId, detailIds) {
+        details << mDetailById[detailId];
+    }
+    return details;
+}
+
+/*
+ * Inserts the association between \a detail and \a groupName to the map.
+ * The detail must have a key (ie. have already been saved in a contact) and the group name must not
+ * be the empty string.
+ */
+void DetailGroupMap::insert(const QString& groupName, const QContactDetail& detail)
+{
+    Q_ASSERT(!groupName.isEmpty());
+    mDetailGroupName[detail.key()] = groupName;
+    mDetailById[detail.key()] = detail;
+}
+
+/*
+ * Replaces the detail currently in the map with \a detail.
+ * The detail must have a key (ie. have already been saved in a contact).
+ */
+void DetailGroupMap::update(const QContactDetail& detail)
+{
+    Q_ASSERT(detail.key());
+    mDetailById[detail.key()] = detail;
+}
+
+/*!
+ * Removes details and groups from the map.
+ */
+void DetailGroupMap::clear()
+{
+    mDetailGroupName.clear();
+    mDetailById.clear();
+}
+
+
+BackupVCardHandler::BackupVCardHandler()
+    : mDetailNumber(0)
+{
+}
+
+void BackupVCardHandler::propertyProcessed(
+        const QVersitDocument& document,
+        const QVersitProperty& property,
+        const QContact& contact,
+        bool* alreadyProcessed,
+        QList<QContactDetail>* updatedDetails)
+{
+    Q_UNUSED(document)
+    Q_UNUSED(contact)
+    QString group;
+    if (!property.groups().isEmpty())
+        group = property.groups().first();
+    if (!*alreadyProcessed) {
+        if (property.name() != PropertyName)
+            return;
+        if (property.groups().size() != 1)
+            return;
+        QMultiHash<QString,QString> parameters = property.parameters();
+        QString definitionName = parameters.value(DetailDefinitionParameter);
+        QString fieldName = parameters.value(FieldParameter);
+
+        // Find a detail previously seen with the same definitionName, which was generated from
+        // a property from the same group
+        QContactDetail detail(definitionName);
+        foreach (const QContactDetail& previousDetail, mDetailGroupMap.detailsInGroup(group)) {
+            if (previousDetail.definitionName() == definitionName) {
+                detail = previousDetail;
+            }
+        }
+        // If not found, it's a new empty detail with the definitionName set.
+
+        detail.setValue(fieldName, deserializeValue(property));
+
+        // Replace the equivalent detail in updatedDetails with the new one
+        QMutableListIterator<QContactDetail> it(*updatedDetails);
+        while (it.hasNext()) {
+            if (it.next().key() == detail.key()) {
+                it.remove();
+                break;
+            }
+        }
+        updatedDetails->append(detail);
+        *alreadyProcessed = true;
+    }
+    if (!group.isEmpty()) {
+        // Keep track of which details were generated from which Versit groups
+        foreach (const QContactDetail& detail, *updatedDetails) {
+            mDetailGroupMap.insert(group, detail);
+        }
+    }
+}
+
+QVariant BackupVCardHandler::deserializeValue(const QVersitProperty& property)
+{
+    // Import the field
+    if (property.parameters().contains(DatatypeParameter, DatatypeParameterVariant)) {
+        // The value was stored as a QVariant serialized in a QByteArray
+        QDataStream stream(property.variantValue().toByteArray());
+        QVariant value;
+        stream >> value;
+        return value;
+    } else if (property.parameters().contains(DatatypeParameter, DatatypeParameterDate)) {
+        // The value was a QDate serialized as a string
+        return QDate::fromString(property.value(), Qt::ISODate);
+    } else if (property.parameters().contains(DatatypeParameter, DatatypeParameterTime)) {
+        // The value was a QTime serialized as a string
+        return QTime::fromString(property.value(), Qt::ISODate);
+    } else if (property.parameters().contains(DatatypeParameter, DatatypeParameterDateTime)) {
+        // The value was a QDateTime serialized as a string
+        return QDateTime::fromString(property.value(), Qt::ISODate);
+    } else if (property.parameters().contains(DatatypeParameter, DatatypeParameterBool)) {
+        // The value was a bool serialized as a string
+        return property.value().toInt() != 0;
+    } else if (property.parameters().contains(DatatypeParameter, DatatypeParameterInt)) {
+        // The value was an int serialized as a string
+        return property.value().toInt();
+    } else if (property.parameters().contains(DatatypeParameter, DatatypeParameterUInt)) {
+        // The value was a uint serialized as a string
+        return property.value().toUInt();
+    } else if (property.parameters().contains(DatatypeParameter, DatatypeParameterUrl)) {
+        // The value was a QUrl serialized as a string
+        return QUrl(property.value());
+    } else {
+        // The value was stored as a QString or QByteArray
+        return property.variantValue();
+    }
+}
+
+void BackupVCardHandler::documentProcessed(
+        const QVersitDocument& document,
+        QContact* contact)
+{
+    Q_UNUSED(document)
+    Q_UNUSED(contact)
+    mDetailGroupMap.clear();
+}
+
+void BackupVCardHandler::detailProcessed(
+        const QContact& contact,
+        const QContactDetail& detail,
+        const QVersitDocument& document,
+        QSet<QString>* processedFields,
+        QList<QVersitProperty>* toBeRemoved,
+        QList<QVersitProperty>* toBeAdded)
+{
+    Q_UNUSED(contact)
+    Q_UNUSED(document)
+    Q_UNUSED(toBeRemoved)
+    if (detail.accessConstraints().testFlag(QContactDetail::ReadOnly))
+        return;
+    QVariantMap fields = detail.variantValues();
+    // fields from the same detail have the same group so the importer can collate them
+    QString detailGroup = GroupPrefix + QString::number(mDetailNumber++);
+    int toBeAddedCount = toBeAdded->count();
+    bool propertiesSynthesized = false;
+    for (QVariantMap::const_iterator it = fields.constBegin(); it != fields.constEnd(); it++) {
+        if (!processedFields->contains(it.key()) && !it.value().toString().isEmpty()) {
+            // Generate a property for the unknown field
+            QVersitProperty property;
+            property.setGroups(QStringList(detailGroup));
+            property.setName(PropertyName);
+            property.insertParameter(DetailDefinitionParameter, detail.definitionName());
+            property.insertParameter(FieldParameter, it.key());
+
+            serializeValue(&property, it.value());
+
+            toBeAdded->append(property);
+            propertiesSynthesized = true;
+            processedFields->insert(it.key());
+        }
+    }
+    if (propertiesSynthesized) {
+        // We need to group the already-generated properties with the newly synthesized ones
+        for (int i = 0; i < toBeAddedCount; i++) {
+            QVersitProperty& property = (*toBeAdded)[i];
+            property.setGroups(property.groups() << detailGroup);
+        }
+    }
+}
+
+void BackupVCardHandler::serializeValue(QVersitProperty* property, const QVariant& value)
+{
+    // serialize the value
+    if (value.type() == QVariant::String
+        || value.type() == QVariant::ByteArray) {
+        // store QStrings and QByteArrays as-is
+        property->setValue(value);
+    } else if (value.type() == QVariant::Date) {
+        // Store a QDate as a string
+        QString valueString(value.toDate().toString(Qt::ISODate));
+        property->insertParameter(DatatypeParameter, DatatypeParameterDate);
+        property->setValue(valueString);
+    } else if (value.type() == QVariant::Time) {
+        // Store a QTime as a string
+        QString valueString(value.toTime().toString(Qt::ISODate));
+        property->insertParameter(DatatypeParameter, DatatypeParameterTime);
+        property->setValue(valueString);
+    } else if (value.type() == QVariant::DateTime) {
+        // Store a QDateTime as a string
+        QString valueString(value.toDateTime().toString(Qt::ISODate));
+        property->insertParameter(DatatypeParameter, DatatypeParameterDateTime);
+        property->setValue(valueString);
+    } else if (value.type() == QVariant::Bool) {
+        // Store an int as a string
+        QString valueString(QString::number(value.toBool() ? 1 : 0));
+        property->insertParameter(DatatypeParameter, DatatypeParameterBool);
+        property->setValue(valueString);
+    } else if (value.type() == QVariant::Int) {
+        // Store an int as a string
+        QString valueString(QString::number(value.toInt()));
+        property->insertParameter(DatatypeParameter, DatatypeParameterInt);
+        property->setValue(valueString);
+    } else if (value.type() == QVariant::UInt) {
+        // Store a uint as a string
+        QString valueString(QString::number(value.toUInt()));
+        property->insertParameter(DatatypeParameter, DatatypeParameterUInt);
+        property->setValue(valueString);
+    } else if (value.type() == QVariant::Url) {
+        // Store a QUrl as a string
+        QString valueString(value.toUrl().toString());
+        property->insertParameter(DatatypeParameter, DatatypeParameterUrl);
+        property->setValue(valueString);
+    } else {
+        // Store other types by serializing the QVariant in a QByteArray
+        QByteArray valueBytes;
+        QDataStream stream(&valueBytes, QIODevice::WriteOnly);
+        stream << value;
+        property->insertParameter(DatatypeParameter, DatatypeParameterVariant);
+        property->setValue(valueBytes);
+    }
+}
+
+void BackupVCardHandler::contactProcessed(
+        const QContact& contact,
+        QVersitDocument* document)
+{
+    Q_UNUSED(contact)
+    Q_UNUSED(document)
+    mDetailNumber = 0;
+}