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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "propertyfinder.h"
#include "qbsassert.h"
namespace qbs {
namespace Internal {
QVariantList PropertyFinder::propertyValues(const QVariantMap &properties,
const QString &moduleName, const QString &key, MergeType mergeType)
{
m_moduleName = moduleName;
m_key = key;
m_findOnlyOne = false;
m_values.clear();
findModuleValues(properties);
if (mergeType == DoMergeLists)
mergeLists(&m_values);
return m_values;
}
QVariant PropertyFinder::propertyValue(const QVariantMap &properties, const QString &moduleName,
const QString &key)
{
m_moduleName = moduleName;
m_key = key;
m_findOnlyOne = true;
m_values.clear();
findModuleValues(properties);
QBS_ASSERT(m_values.count() <= 1, return QVariant());
return m_values.isEmpty() ? QVariant() : m_values.first();
}
void PropertyFinder::findModuleValues(const QVariantMap &properties)
{
QVariantMap moduleProperties = properties.value(QLatin1String("modules")).toMap();
// Direct hits come first.
const QVariantMap::Iterator modIt = moduleProperties.find(m_moduleName);
if (modIt != moduleProperties.end()) {
const QVariantMap moduleMap = modIt->toMap();
const QVariant property = moduleMap.value(m_key);
addToList(property);
moduleProperties.erase(modIt);
}
// These are the non-matching modules.
for (QVariantMap::ConstIterator it = moduleProperties.constBegin();
it != moduleProperties.constEnd() && (m_values.isEmpty() || !m_findOnlyOne); ++it) {
findModuleValues(it->toMap());
}
}
void PropertyFinder::addToList(const QVariant &value)
{
// Note: This means that manually setting a property to "null" will not lead to a "hit".
if (!value.isNull() && !m_values.contains(value))
m_values << value;
}
void PropertyFinder::mergeLists(QVariantList *values)
{
QVariantList::iterator it = values->begin();
while (it != values->end()) {
if (it->canConvert<QVariantList>()) {
QVariantList sublist = it->toList();
mergeLists(&sublist);
it = values->erase(it);
for (int k = sublist.count(); --k >= 0;)
it = values->insert(it, sublist.at(k));
} else {
++it;
}
}
}
} // namespace Internal
} // namespace qbs
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