335 lines
10 KiB
C++
335 lines
10 KiB
C++
/************************************************************************
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**
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** @file vabstractconverter.cpp
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date 10 12, 2014
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**
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** @brief
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** @copyright
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** This source code is part of the Valentina project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2013-2015 Valentina project
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** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
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**
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** Valentina is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Valentina is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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#include "vabstractconverter.h"
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#include <QDir>
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#include <QDomElement>
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#include <QDomNode>
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#include <QDomNodeList>
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#include <QFile>
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#include <QFileInfo>
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#include <QLatin1String>
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#include <QMap>
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#include <QRegularExpression>
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#include <QRegularExpressionMatch>
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#include <QStaticStringData>
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#include <QStringData>
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#include <QStringDataPtr>
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#include <QStringList>
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#include "../exception/vexception.h"
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#include "../exception/vexceptionwrongid.h"
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#include "vdomdocument.h"
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//---------------------------------------------------------------------------------------------------------------------
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VAbstractConverter::VAbstractConverter(const QString &fileName)
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: VDomDocument(),
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m_ver(0x0),
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m_convertedFileName(fileName),
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m_tmpFile()
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{
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setXMLContent(m_convertedFileName);// Throw an exception on error
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m_ver = GetVersion(GetVersionStr());
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}
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//---------------------------------------------------------------------------------------------------------------------
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QString VAbstractConverter::Convert()
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{
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if (m_ver == MaxVer())
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{
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return m_convertedFileName;
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}
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if (not IsReadOnly())
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{
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ReserveFile();
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}
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if (m_tmpFile.open())
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{
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m_convertedFileName = m_tmpFile.fileName();
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}
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else
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{
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const QString errorMsg(tr("Error openning a temp file: %1.").arg(m_tmpFile.errorString()));
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throw VException(errorMsg);
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}
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m_ver < MaxVer() ? ApplyPatches() : DowngradeToCurrentMaxVersion();
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return m_convertedFileName;
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}
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//---------------------------------------------------------------------------------------------------------------------
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int VAbstractConverter::GetCurrentFormatVarsion() const
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{
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return m_ver;
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}
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//---------------------------------------------------------------------------------------------------------------------
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QString VAbstractConverter::GetVersionStr() const
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{
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const QDomNodeList nodeList = this->elementsByTagName(TagVersion);
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if (nodeList.isEmpty())
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{
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const QString errorMsg(tr("Couldn't get version information."));
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throw VException(errorMsg);
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}
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if (nodeList.count() > 1)
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{
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const QString errorMsg(tr("Too many tags <%1> in file.").arg(TagVersion));
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throw VException(errorMsg);
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}
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const QDomNode domNode = nodeList.at(0);
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if (domNode.isNull() == false && domNode.isElement())
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{
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const QDomElement domElement = domNode.toElement();
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if (domElement.isNull() == false)
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{
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return domElement.text();
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}
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}
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return QString(QStringLiteral("0.0.0"));
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}
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//---------------------------------------------------------------------------------------------------------------------
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int VAbstractConverter::GetVersion(const QString &version)
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{
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ValidateVersion(version);
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const QStringList ver = version.split(".");
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bool ok = false;
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const int major = ver.at(0).toInt(&ok);
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if (not ok)
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{
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return 0x0;
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}
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ok = false;
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const int minor = ver.at(1).toInt(&ok);
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if (not ok)
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{
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return 0x0;
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}
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ok = false;
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const int patch = ver.at(2).toInt(&ok);
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if (not ok)
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{
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return 0x0;
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}
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return (major<<16)|(minor<<8)|(patch);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::ValidateVersion(const QString &version)
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{
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const QRegularExpression rx(QStringLiteral("^(0|([1-9][0-9]*)).(0|([1-9][0-9]*)).(0|([1-9][0-9]*))$"));
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if (rx.match(version).hasMatch() == false)
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{
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const QString errorMsg(tr("Version \"%1\" invalid.").arg(version));
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throw VException(errorMsg);
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}
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if (version == QLatin1String("0.0.0"))
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{
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const QString errorMsg(tr("Version \"0.0.0\" invalid."));
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throw VException(errorMsg);
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::ReserveFile() const
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{
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//It's not possible in all cases make conversion without lose data.
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//For such cases we will store old version in a reserve file.
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QString error;
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QFileInfo info(m_convertedFileName);
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const QString reserveFileName = QString("%1/%2(v%3).%4.bak")
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.arg(info.absoluteDir().absolutePath())
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.arg(info.baseName())
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.arg(GetVersionStr())
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.arg(info.completeSuffix());
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if (not SafeCopy(m_convertedFileName, reserveFileName, error))
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{
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#ifdef Q_OS_WIN32
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qt_ntfs_permission_lookup++; // turn checking on
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#endif /*Q_OS_WIN32*/
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const bool isFileWritable = info.isWritable();
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#ifdef Q_OS_WIN32
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qt_ntfs_permission_lookup--; // turn it off again
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#endif /*Q_OS_WIN32*/
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if (not IsReadOnly() && isFileWritable)
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{
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const QString errorMsg(tr("Error creating a reserv copy: %1.").arg(error));
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throw VException(errorMsg);
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}
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::Replace(QString &formula, const QString &newName, int position, const QString &token,
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int &bias) const
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{
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formula.replace(position, token.length(), newName);
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bias = token.length() - newName.length();
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::CorrectionsPositions(int position, int bias, QMap<int, QString> &tokens) const
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{
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if (bias == 0)
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{
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return;// Nothing to correct;
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}
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BiasTokens(position, bias, tokens);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::BiasTokens(int position, int bias, QMap<int, QString> &tokens)
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{
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QMap<int, QString> newTokens;
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QMap<int, QString>::const_iterator i = tokens.constBegin();
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while (i != tokens.constEnd())
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{
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if (i.key()<= position)
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{ // Tokens before position "position" did not change his positions.
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newTokens.insert(i.key(), i.value());
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}
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else
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{
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newTokens.insert(i.key()-bias, i.value());
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}
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++i;
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}
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tokens = newTokens;
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}
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//---------------------------------------------------------------------------------------------------------------------
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Q_NORETURN void VAbstractConverter::InvalidVersion(int ver) const
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{
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if (ver < MinVer())
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{
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const QString errorMsg(tr("Invalid version. Minimum supported version is %1").arg(MinVerStr()));
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throw VException(errorMsg);
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}
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if (ver > MaxVer())
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{
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const QString errorMsg(tr("Invalid version. Maximum supported version is %1").arg(MaxVerStr()));
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throw VException(errorMsg);
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}
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const QString errorMsg(tr("Unexpected version \"%1\".").arg(ver, 0, 16));
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throw VException(errorMsg);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::ValidateInputFile(const QString ¤tSchema) const
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{
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QString schema;
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try
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{
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schema = XSDSchema(m_ver);
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}
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catch(const VException &e)
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{
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if (m_ver < MinVer())
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{ // Version less than minimally supported version. Can't do anything.
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throw;
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}
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else if (m_ver > MaxVer())
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{ // Version bigger than maximum supported version. We still have a chance to open the file.
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try
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{ // Try to open like the current version.
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ValidateXML(currentSchema, m_convertedFileName);
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}
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catch(const VException &exp)
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{ // Nope, we can't.
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Q_UNUSED(exp)
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throw e;
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}
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}
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else
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{ // Unexpected version. Most time mean that we do not catch all versions between min and max.
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throw;
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}
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return; // All is fine and we can try to convert to current max version.
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}
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ValidateXML(schema, m_convertedFileName);
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::Save()
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{
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try
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{
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TestUniqueId();
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}
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catch (const VExceptionWrongId &e)
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{
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Q_UNUSED(e)
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VException ex(tr("Error no unique id."));
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throw ex;
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}
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m_tmpFile.resize(0);//clear previous content
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const int indent = 4;
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QTextStream out(&m_tmpFile);
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out.setCodec("UTF-8");
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save(out, indent);
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if (not m_tmpFile.flush())
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{
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VException e(m_tmpFile.errorString());
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throw e;
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}
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}
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//---------------------------------------------------------------------------------------------------------------------
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void VAbstractConverter::SetVersion(const QString &version)
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{
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ValidateVersion(version);
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if (setTagText(TagVersion, version) == false)
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{
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VException e(tr("Could not change version."));
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throw e;
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}
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}
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