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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml 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 "qv4compileddata_p.h"
#include <private/qv4staticvalue_p.h>
#include <private/qqmlirbuilder_p.h>
#include <QCoreApplication>
#include <QCryptographicHash>
#include <QSaveFile>
#include <QScopeGuard>
#include <QFileInfo>
#include <algorithm>
QT_BEGIN_NAMESPACE
namespace QV4 {
namespace CompiledData {
CompilationUnit::CompilationUnit(const Unit *unitData, const QString &fileName, const QString &finalUrlString)
{
setUnitData(unitData, nullptr, fileName, finalUrlString);
}
CompilationUnit::~CompilationUnit()
{
if (data) {
if (data->qmlUnit() != qmlData)
free(const_cast<QmlUnit *>(qmlData));
qmlData = nullptr;
if (!(data->flags & QV4::CompiledData::Unit::StaticData))
free(const_cast<Unit *>(data));
}
data = nullptr;
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
delete [] constants;
constants = nullptr;
#endif
delete [] imports;
imports = nullptr;
}
bool CompilationUnit::saveToDisk(const QString &outputFileName, QString *errorString) const
{
errorString->clear();
#if QT_CONFIG(temporaryfile)
// Foo.qml -> Foo.qmlc
QSaveFile cacheFile(outputFileName);
if (!cacheFile.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
*errorString = cacheFile.errorString();
return false;
}
SaveableUnitPointer saveable(this);
qint64 headerWritten = cacheFile.write(saveable.data<char>(), saveable.size());
if (headerWritten != saveable.size()) {
*errorString = cacheFile.errorString();
return false;
}
if (!cacheFile.commit()) {
*errorString = cacheFile.errorString();
return false;
}
return true;
#else
Q_UNUSED(outputFileName)
*errorString = QStringLiteral("features.temporaryfile is disabled.");
return false;
#endif // QT_CONFIG(temporaryfile)
}
void CompilationUnit::setUnitData(const Unit *unitData, const QmlUnit *qmlUnit,
const QString &fileName, const QString &finalUrlString)
{
data = unitData;
qmlData = nullptr;
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
delete [] constants;
#endif
constants = nullptr;
m_fileName.clear();
m_finalUrlString.clear();
if (!data)
return;
qmlData = qmlUnit ? qmlUnit : data->qmlUnit();
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
StaticValue *bigEndianConstants = new StaticValue[data->constantTableSize];
const quint64_le *littleEndianConstants = data->constants();
for (uint i = 0; i < data->constantTableSize; ++i)
bigEndianConstants[i] = StaticValue::fromReturnedValue(littleEndianConstants[i]);
constants = bigEndianConstants;
#else
constants = reinterpret_cast<const StaticValue*>(data->constants());
#endif
m_fileName = !fileName.isEmpty() ? fileName : stringAt(data->sourceFileIndex);
m_finalUrlString = !finalUrlString.isEmpty() ? finalUrlString : stringAt(data->finalUrlIndex);
}
//reverse of Lexer::singleEscape()
QString Binding::escapedString(const QString &string)
{
QString tmp = QLatin1String("\"");
for (int i = 0; i < string.length(); ++i) {
const QChar &c = string.at(i);
switch (c.unicode()) {
case 0x08:
tmp += QLatin1String("\\b");
break;
case 0x09:
tmp += QLatin1String("\\t");
break;
case 0x0A:
tmp += QLatin1String("\\n");
break;
case 0x0B:
tmp += QLatin1String("\\v");
break;
case 0x0C:
tmp += QLatin1String("\\f");
break;
case 0x0D:
tmp += QLatin1String("\\r");
break;
case 0x22:
tmp += QLatin1String("\\\"");
break;
case 0x27:
tmp += QLatin1String("\\\'");
break;
case 0x5C:
tmp += QLatin1String("\\\\");
break;
default:
tmp += c;
break;
}
}
tmp += QLatin1Char('\"');
return tmp;
}
void CompilationUnit::unlink()
{
free(runtimeStrings);
runtimeStrings = nullptr;
delete [] runtimeRegularExpressions;
runtimeRegularExpressions = nullptr;
free(runtimeClasses);
runtimeClasses = nullptr;
}
void Unit::generateChecksum()
{
#ifndef QT_CRYPTOGRAPHICHASH_ONLY_SHA1
QCryptographicHash hash(QCryptographicHash::Md5);
const int checksummableDataOffset = offsetof(QV4::CompiledData::Unit, md5Checksum) + sizeof(md5Checksum);
const char *dataPtr = reinterpret_cast<const char *>(this) + checksummableDataOffset;
hash.addData(dataPtr, unitSize - checksummableDataOffset);
QByteArray checksum = hash.result();
Q_ASSERT(checksum.size() == sizeof(md5Checksum));
memcpy(md5Checksum, checksum.constData(), sizeof(md5Checksum));
#else
memset(md5Checksum, 0, sizeof(md5Checksum));
#endif
}
}
}
QT_END_NAMESPACE
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