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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 "persistence.h"
#include "fileinfo.h"
#include <logging/translator.h>
#include <tools/error.h>
#include <tools/qbsassert.h>
#include <QDir>
#include <QScopedPointer>
namespace qbs {
namespace Internal {
static const char QBS_PERSISTENCE_MAGIC[] = "QBSPERSISTENCE-41";
PersistentPool::PersistentPool(const Logger &logger) : m_logger(logger)
{
m_stream.setVersion(QDataStream::Qt_4_8);
}
PersistentPool::~PersistentPool()
{
closeStream();
}
void PersistentPool::load(const QString &filePath)
{
QScopedPointer<QFile> file(new QFile(filePath));
if (!file->exists())
throw ErrorInfo(Tr::tr("No build graph exists yet for this configuration."));
if (!file->open(QFile::ReadOnly)) {
throw ErrorInfo(Tr::tr("Could not open open build graph file '%1': %2")
.arg(filePath, file->errorString()));
}
m_stream.setDevice(file.data());
QByteArray magic;
m_stream >> magic;
if (magic != QBS_PERSISTENCE_MAGIC) {
file->close();
file->remove();
m_stream.setDevice(0);
throw ErrorInfo(Tr::tr("Cannot use stored build graph at '%1': Incompatible file format. "
"Expected magic token '%2', got '%3'.")
.arg(filePath, QString::fromLatin1(QBS_PERSISTENCE_MAGIC),
QString::fromLatin1(magic)));
}
m_stream >> m_headData.projectConfig;
file.take();
m_loadedRaw.clear();
m_loaded.clear();
m_storageIndices.clear();
m_stringStorage.clear();
m_inverseStringStorage.clear();
}
bool PersistentPool::setupWriteStream(const QString &filePath)
{
QString dirPath = FileInfo::path(filePath);
if (!FileInfo::exists(dirPath))
if (!QDir().mkpath(dirPath))
return false;
if (QFile::exists(filePath) && !QFile::remove(filePath))
return false;
QBS_CHECK(!QFile::exists(filePath));
QScopedPointer<QFile> file(new QFile(filePath));
if (!file->open(QFile::WriteOnly))
return false;
m_stream.setDevice(file.take());
m_stream << QByteArray(QBS_PERSISTENCE_MAGIC) << m_headData.projectConfig;
m_lastStoredObjectId = 0;
m_lastStoredStringId = 0;
return true;
}
void PersistentPool::closeStream()
{
delete m_stream.device();
m_stream.setDevice(0);
}
void PersistentPool::store(const PersistentObject *object)
{
if (!object) {
m_stream << -1;
return;
}
PersistentObjectId id = m_storageIndices.value(object, -1);
if (id < 0) {
id = m_lastStoredObjectId++;
m_storageIndices.insert(object, id);
m_stream << id;
object->store(*this);
} else {
m_stream << id;
}
}
void PersistentPool::clear()
{
m_loaded.clear();
m_storageIndices.clear();
m_stringStorage.clear();
m_inverseStringStorage.clear();
}
QDataStream &PersistentPool::stream()
{
return m_stream;
}
void PersistentPool::storeString(const QString &t)
{
int id = m_inverseStringStorage.value(t, -1);
if (id < 0) {
id = m_lastStoredStringId++;
m_inverseStringStorage.insert(t, id);
m_stream << id << t;
} else {
m_stream << id;
}
}
QString PersistentPool::loadString(int id)
{
QBS_CHECK(id >= 0);
if (id >= m_stringStorage.count()) {
QString s;
m_stream >> s;
m_stringStorage.resize(id + 1);
m_stringStorage[id] = s;
return s;
}
return m_stringStorage.at(id);
}
QString PersistentPool::idLoadString()
{
int id;
m_stream >> id;
return loadString(id);
}
void PersistentPool::storeStringSet(const QSet<QString> &t)
{
m_stream << t.count();
foreach (const QString &s, t)
storeString(s);
}
QSet<QString> PersistentPool::idLoadStringSet()
{
int i;
m_stream >> i;
QSet<QString> result;
for (; --i >= 0;)
result += idLoadString();
return result;
}
void PersistentPool::storeStringList(const QStringList &t)
{
m_stream << t.count();
foreach (const QString &s, t)
storeString(s);
}
QStringList PersistentPool::idLoadStringList()
{
int i;
m_stream >> i;
QStringList result;
for (; --i >= 0;)
result += idLoadString();
return result;
}
} // namespace Internal
} // namespace qbs
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