valentina/src/libs/ifc/xml/vdomdocument.cpp

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/************************************************************************
**
** @file vdomdocument.cpp
** @author Roman Telezhynskyi <dismine(at)gmail.com>
** @date November 15, 2013
**
** @brief
** @copyright
** This source code is part of the Valentine project, a pattern making
** program, whose allow create and modeling patterns of clothing.
** Copyright (C) 2013-2015 Valentina project
** <https://bitbucket.org/dismine/valentina> All Rights Reserved.
**
** Valentina is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** Valentina is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
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#include "vdomdocument.h"
#include "exception/vexceptionconversionerror.h"
#include "exception/vexceptionemptyparameter.h"
#include "exception/vexceptionbadid.h"
#include "exception/vexceptionwrongid.h"
#if QT_VERSION < QT_VERSION_CHECK(5, 1, 0)
# include "../vmisc/backport/qsavefile.h"
#else
# include <QSaveFile>
#endif
#include <QAbstractMessageHandler>
#include <QXmlSchema>
#include <QXmlSchemaValidator>
#include <QFile>
#include <QFileInfo>
#include <QTemporaryFile>
//This class need for validation pattern file using XSD shema
class MessageHandler : public QAbstractMessageHandler
{
public:
MessageHandler() : QAbstractMessageHandler(), m_messageType(QtMsgType()), m_description(QString()),
m_sourceLocation(QSourceLocation()){}
QString statusMessage() const;
qint64 line() const;
qint64 column() const;
protected:
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// cppcheck-suppress unusedFunction
virtual void handleMessage(QtMsgType type, const QString &description,
const QUrl &identifier, const QSourceLocation &sourceLocation) Q_DECL_OVERRIDE;
private:
QtMsgType m_messageType;
QString m_description;
QSourceLocation m_sourceLocation;
};
//---------------------------------------------------------------------------------------------------------------------
inline QString MessageHandler::statusMessage() const
{
return m_description;
}
//---------------------------------------------------------------------------------------------------------------------
inline qint64 MessageHandler::line() const
{
return m_sourceLocation.line();
}
//---------------------------------------------------------------------------------------------------------------------
inline qint64 MessageHandler::column() const
{
return m_sourceLocation.column();
}
//---------------------------------------------------------------------------------------------------------------------
// cppcheck-suppress unusedFunction
void MessageHandler::handleMessage(QtMsgType type, const QString &description, const QUrl &identifier,
const QSourceLocation &sourceLocation)
{
Q_UNUSED(type);
Q_UNUSED(identifier);
m_messageType = type;
m_description = description;
m_sourceLocation = sourceLocation;
}
Q_LOGGING_CATEGORY(vXML, "v.xml")
const QString VDomDocument::AttrId = QStringLiteral("id");
const QString VDomDocument::UnitMM = QStringLiteral("mm");
const QString VDomDocument::UnitCM = QStringLiteral("cm");
const QString VDomDocument::UnitINCH = QStringLiteral("inch");
const QString VDomDocument::UnitPX = QStringLiteral("px");
const QString VDomDocument::TagVersion = QStringLiteral("version");
//---------------------------------------------------------------------------------------------------------------------
VDomDocument::VDomDocument()
: QDomDocument(), map(QHash<QString, QDomElement>())
{}
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//---------------------------------------------------------------------------------------------------------------------
VDomDocument::~VDomDocument()
{}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief Finds an element by id.
* @param id value id attribute.
* @return dom element.
*/
QDomElement VDomDocument::elementById(const QString& id)
{
if (map.contains(id))
{
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QDomElement e = map[id];
if (e.parentNode().nodeType() != QDomNode::BaseNode)
{
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return e;
}
map.remove(id);
}
if (this->find(this->documentElement(), id))
{
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return map[id];
}
return QDomElement();
}
//---------------------------------------------------------------------------------------------------------------------
QDomElement VDomDocument::elementById(quint32 id)
{
return elementById(QString().setNum(id));
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief Removes all children of a given element tag. RENAME: removeAllChildren
* @param element tag
*/
void VDomDocument::removeAllChilds(QDomElement &element)
{
QDomNode domNode = element.firstChild();
while (domNode.isNull() == false)
{
if (domNode.isElement())
{
QDomElement domElement = domNode.toElement();
if (domElement.isNull() == false)
{
element.removeChild(domElement);
}
}
domNode = element.firstChild();
}
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief Find element by id.
* @param node node
* @param id id value
* @return true if found
*/
bool VDomDocument::find(const QDomElement &node, const QString& id)
{
if (node.hasAttribute(AttrId))
{
const QString value = node.attribute(AttrId);
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this->map[value] = node;
if (value == id)
{
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return true;
}
}
for (qint32 i=0; i<node.childNodes().length(); ++i)
{
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QDomNode n = node.childNodes().at(i);
if (n.isElement())
{
if (this->find(n.toElement(), id))
{
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return true;
}
}
}
return false;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief Returns the long long value of the given attribute. RENAME: GetParameterLongLong?
* @param domElement tag in xml tree
* @param name attribute name
* @return long long value
*/
quint32 VDomDocument::GetParametrUInt(const QDomElement &domElement, const QString &name, const QString &defValue) const
{
Q_ASSERT_X(not name.isEmpty(), Q_FUNC_INFO, "name of parametr is empty");
Q_ASSERT_X(not domElement.isNull(), Q_FUNC_INFO, "domElement is null"); //-V591
bool ok = false;
QString parametr;
quint32 id = 0;
QString message = tr("Can't convert toUInt parameter");
try
{
parametr = GetParametrString(domElement, name, defValue);
id = parametr.toUInt(&ok);
if (ok == false)
{
throw VExceptionConversionError(message, name);
}
}
catch (const VExceptionEmptyParameter &e)
{
VExceptionConversionError excep(message, name);
excep.AddMoreInformation(e.ErrorMessage());
throw excep;
}
return id;
}
//---------------------------------------------------------------------------------------------------------------------
bool VDomDocument::GetParametrBool(const QDomElement &domElement, const QString &name, const QString &defValue) const
{
Q_ASSERT_X(not name.isEmpty(), Q_FUNC_INFO, "name of parametr is empty");
Q_ASSERT_X(not domElement.isNull(), Q_FUNC_INFO, "domElement is null");
QString parametr;
bool val = true;
QString message = tr("Can't convert toBool parameter");
try
{
parametr = GetParametrString(domElement, name, defValue);
QStringList bools = QStringList() << QLatin1String("true") << QLatin1String("false");
switch (bools.indexOf(parametr))
{
case 0: // true
val = true;
break;
case 1: // false
val = false;
break;
default:// others
throw VExceptionConversionError(message, name);
break;
}
}
catch (const VExceptionEmptyParameter &e)
{
VExceptionConversionError excep(message, name);
excep.AddMoreInformation(e.ErrorMessage());
throw excep;
}
return val;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief Returns the string value of the given attribute. RENAME: see above
*
* if attribute empty return default value. If default value empty too throw exception.
* @return attribute value
* @throw VExceptionEmptyParameter when attribute is empty
*/
QString VDomDocument::GetParametrString(const QDomElement &domElement, const QString &name,
const QString &defValue) const
{
Q_ASSERT_X(not name.isEmpty(), Q_FUNC_INFO, "name of parametr is empty");
Q_ASSERT_X(not domElement.isNull(), Q_FUNC_INFO, "domElement is null");
const QString parameter = domElement.attribute(name, defValue);
if (parameter.isEmpty())
{
if (defValue.isEmpty())
{
throw VExceptionEmptyParameter(tr("Got empty parameter"), name, domElement);
}
else
{
return defValue;
}
}
return parameter;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief Returns the double value of the given attribute.
* @param domElement tag in xml tree
* @param name attribute name
* @return double value
*/
qreal VDomDocument::GetParametrDouble(const QDomElement &domElement, const QString &name, const QString &defValue) const
{
Q_ASSERT_X(not name.isEmpty(), Q_FUNC_INFO, "name of parametr is empty");
Q_ASSERT_X(not domElement.isNull(), Q_FUNC_INFO, "domElement is null");
bool ok = false;
qreal param = 0;
QString message = tr("Can't convert toDouble parameter");
try
{
QString parametr = GetParametrString(domElement, name, defValue);
param = parametr.replace(",", ".").toDouble(&ok);
if (ok == false)
{
throw VExceptionConversionError(message, name);
}
}
catch (const VExceptionEmptyParameter &e)
{
VExceptionConversionError excep(message, name);
excep.AddMoreInformation(e.ErrorMessage());
throw excep;
}
return param;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief GetParametrId return value id attribute.
* @param domElement tag in xml tree.
* @return id value.
*/
quint32 VDomDocument::GetParametrId(const QDomElement &domElement) const
{
Q_ASSERT_X(not domElement.isNull(), Q_FUNC_INFO, "domElement is null");
quint32 id = 0;
QString message = tr("Got wrong parameter id. Need only id > 0.");
try
{
id = GetParametrUInt(domElement, VDomDocument::AttrId, NULL_ID_STR);
if (id <= 0)
{
throw VExceptionWrongId(message, domElement);
}
}
catch (const VExceptionConversionError &e)
{
VExceptionWrongId excep(message, domElement);
excep.AddMoreInformation(e.ErrorMessage());
throw excep;
}
return id;
}
//---------------------------------------------------------------------------------------------------------------------
QString VDomDocument::UniqueTagText(const QString &tagName, const QString &defVal) const
{
const QDomNodeList nodeList = this->elementsByTagName(tagName);
if (nodeList.isEmpty())
{
return defVal;
}
else
{
const QDomNode domNode = nodeList.at(0);
if (domNode.isNull() == false && domNode.isElement())
{
const QDomElement domElement = domNode.toElement();
if (domElement.isNull() == false)
{
const QString text = domElement.text();
if (text.isEmpty())
{
return defVal;
}
else
{
return text;
}
}
}
}
return defVal;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief TestUniqueId test exist unique id in pattern file. Each id must be unique.
*/
void VDomDocument::TestUniqueId() const
{
QVector<quint32> vector;
CollectId(documentElement(), vector);
}
//---------------------------------------------------------------------------------------------------------------------
void VDomDocument::CollectId(const QDomElement &node, QVector<quint32> &vector) const
{
if (node.hasAttribute(VDomDocument::AttrId))
{
const quint32 id = GetParametrId(node);
if (vector.contains(id))
{
throw VExceptionWrongId(tr("This id is not unique."), node);
}
vector.append(id);
}
for (qint32 i=0; i<node.childNodes().length(); ++i)
{
const QDomNode n = node.childNodes().at(i);
if (n.isElement())
{
CollectId(n.toElement(), vector);
}
}
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief ValidateXML validate xml file by xsd schema.
* @param schema path to schema file.
* @param fileName name of xml file.
*/
void VDomDocument::ValidateXML(const QString &schema, const QString &fileName)
{
qCDebug(vXML, "Validation xml file %s.", qUtf8Printable(fileName));
QFile pattern(fileName);
if (pattern.open(QIODevice::ReadOnly) == false)
{
const QString errorMsg(tr("Can't open file %1:\n%2.").arg(fileName).arg(pattern.errorString()));
throw VException(errorMsg);
}
QFile fileSchema(schema);
if (fileSchema.open(QIODevice::ReadOnly) == false)
{
pattern.close();
const QString errorMsg(tr("Can't open schema file %1:\n%2.").arg(schema).arg(fileSchema.errorString()));
throw VException(errorMsg);
}
MessageHandler messageHandler;
QXmlSchema sch;
sch.setMessageHandler(&messageHandler);
if (sch.load(&fileSchema, QUrl::fromLocalFile(fileSchema.fileName()))==false)
{
pattern.close();
fileSchema.close();
const QString errorMsg(tr("Could not load schema file '%1'.").arg(fileSchema.fileName()));
throw VException(errorMsg);
}
qCDebug(vXML, "Schema loaded.");
bool errorOccurred = false;
if (sch.isValid() == false)
{
errorOccurred = true;
}
else
{
QXmlSchemaValidator validator(sch);
if (validator.validate(&pattern, QUrl::fromLocalFile(pattern.fileName())) == false)
{
errorOccurred = true;
}
}
if (errorOccurred)
{
pattern.close();
fileSchema.close();
VException e(messageHandler.statusMessage());
e.AddMoreInformation(tr("Validation error file %3 in line %1 column %2").arg(messageHandler.line())
.arg(messageHandler.column()).arg(fileName));
throw e;
}
pattern.close();
fileSchema.close();
}
//---------------------------------------------------------------------------------------------------------------------
void VDomDocument::setXMLContent(const QString &fileName)
{
QFile file(fileName);
if (file.open(QIODevice::ReadOnly) == false)
{
const QString errorMsg(tr("Can't open file %1:\n%2.").arg(fileName).arg(file.errorString()));
throw VException(errorMsg);
}
QString errorMsg;
int errorLine = -1;
int errorColumn = -1;
if (QDomDocument::setContent(&file, &errorMsg, &errorLine, &errorColumn) == false)
{
file.close();
VException e(errorMsg);
e.AddMoreInformation(tr("Parsing error file %3 in line %1 column %2").arg(errorLine).arg(errorColumn)
.arg(fileName));
throw e;
}
}
//---------------------------------------------------------------------------------------------------------------------
Unit VDomDocument::StrToUnits(const QString &unit)
{
QStringList units = QStringList() << UnitMM << UnitCM << UnitINCH << UnitPX;
Unit result = Unit::Cm;
switch (units.indexOf(unit))
{
case 0:// mm
result = Unit::Mm;
break;
case 1:// cm
result = Unit::Cm;
break;
case 2:// inch
result = Unit::Inch;
break;
case 3:// px
result = Unit::Px;
break;
default:
result = Unit::Cm;
break;
}
return result;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief UnitsToStr translate unit to string.
*
* This method used when need write unit in xml file and for showing unit in dialogs.
* @param unit curent unit
* @param translate true if need show translated name. Default value false.
* @return string reprezantation for unit.
*/
QString VDomDocument::UnitsToStr(const Unit &unit, const bool translate)
{
QString result;
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switch (unit)
{
case Unit::Mm:
if (translate)
{
result = QObject::tr("mm");
}
else
{
result = UnitMM;
}
break;
case Unit::Cm:
if (translate)
{
result = QObject::tr("cm");
}
else
{
result = UnitCM;
}
break;
case Unit::Inch:
if (translate)
{
result = QObject::tr("inch");
}
else
{
result = UnitINCH;
}
break;
case Unit::Px:
if (translate)
{
result = QObject::tr("px");
}
else
{
result = UnitPX;
}
break;
default:
if (translate)
{
result = QObject::tr("cm");
}
else
{
result = UnitCM;
}
break;
}
return result;
}
//---------------------------------------------------------------------------------------------------------------------
QString VDomDocument::UnitsHelpString()
{
QString r;
for (auto i = static_cast<int>(Unit::Mm), last = static_cast<int>(Unit::LAST_UNIT_DO_NOT_USE); i < last;++i)
{
r += UnitsToStr(static_cast<Unit>(i));
if (i < last - 1)
{
r += ", ";
}
}
return r;
}
//---------------------------------------------------------------------------------------------------------------------
bool VDomDocument::SaveDocument(const QString &fileName, QString &error) const
{
if (fileName.isEmpty())
{
qDebug()<<"Got empty file name.";
return false;
}
bool success = false;
QSaveFile file(fileName);
if (file.open(QIODevice::WriteOnly))
{
const int indent = 4;
QTextStream out(&file);
out.setCodec("UTF-8");
save(out, indent);
success = file.commit();
}
if (not success)
{
error = file.errorString();
}
return success;
}
//---------------------------------------------------------------------------------------------------------------------
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// cppcheck-suppress unusedFunction
QString VDomDocument::Major() const
{
QString version = UniqueTagText(TagVersion, "0.0.0");
QStringList v = version.split(".");
return v.at(0);
}
//---------------------------------------------------------------------------------------------------------------------
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// cppcheck-suppress unusedFunction
QString VDomDocument::Minor() const
{
QString version = UniqueTagText(TagVersion, "0.0.0");
QStringList v = version.split(".");
return v.at(1);
}
//---------------------------------------------------------------------------------------------------------------------
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// cppcheck-suppress unusedFunction
QString VDomDocument::Patch() const
{
QString version = UniqueTagText(TagVersion, "0.0.0");
QStringList v = version.split(".");
return v.at(2);
}
//---------------------------------------------------------------------------------------------------------------------
bool VDomDocument::setTagText(const QString &tag, const QString &text)
{
const QDomNodeList nodeList = this->elementsByTagName(tag);
if (nodeList.isEmpty())
{
qDebug()<<"Can't save tag "<<tag<<Q_FUNC_INFO;
}
else
{
const QDomNode domNode = nodeList.at(0);
if (domNode.isNull() == false && domNode.isElement())
{
const QDomElement domElement = domNode.toElement();
if (domElement.isNull() == false)
{
QDomElement parent = domElement.parentNode().toElement();
QDomElement newTag = createElement(tag);
if (not text.isEmpty())
{
const QDomText newTagText = createTextNode(text);
newTag.appendChild(newTagText);
}
parent.replaceChild(newTag, domElement);
return true;
}
}
}
return false;
}
//---------------------------------------------------------------------------------------------------------------------
/**
* @brief RemoveAllChild remove all child from file.
* @param domElement tag in xml tree.
*/
void VDomDocument::RemoveAllChild(QDomElement &domElement)
{
if ( domElement.hasChildNodes() )
{
while ( domElement.childNodes().length() >= 1 )
{
domElement.removeChild( domElement.firstChild() );
}
}
}
//---------------------------------------------------------------------------------------------------------------------
QDomNode VDomDocument::ParentNodeById(const quint32 &nodeId)
{
QDomElement domElement = NodeById(nodeId);
return domElement.parentNode();
}
//---------------------------------------------------------------------------------------------------------------------
QDomElement VDomDocument::CloneNodeById(const quint32 &nodeId)
{
QDomElement domElement = NodeById(nodeId);
return domElement.cloneNode().toElement();
}
//---------------------------------------------------------------------------------------------------------------------
QDomElement VDomDocument::NodeById(const quint32 &nodeId)
{
QDomElement domElement = elementById(QString().setNum(nodeId));
if (domElement.isNull() || domElement.isElement() == false)
{
throw VExceptionBadId(tr("Couldn't get node"), nodeId);
}
return domElement;
}
//---------------------------------------------------------------------------------------------------------------------
bool VDomDocument::SafeCopy(const QString &source, const QString &destination, QString &error)
{
bool result = false;
#ifdef Q_OS_WIN32
qt_ntfs_permission_lookup++; // turn checking on
#endif /*Q_OS_WIN32*/
QTemporaryFile destFile(destination + QLatin1Literal(".XXXXXX"));
destFile.setAutoRemove(false);
if (not destFile.open())
{
error = destFile.errorString();
result = false;
}
else
{
QFile sourceFile(source);
if (sourceFile.open(QIODevice::ReadOnly))
{
result = true;
char block[4096];
qint64 bytes;
while ((bytes = sourceFile.read(block, sizeof(block))) > 0)
{
if (bytes != destFile.write(block, bytes))
{
error = destFile.errorString();
result = false;
break;
}
}
if (bytes == -1)
{
error = sourceFile.errorString();
result = false;
}
if (result)
{
if (not destFile.rename(destination))
{
error = destFile.errorString();
result = false;
}
else
{
result = true;
}
}
}
}
#ifdef Q_OS_WIN32
qt_ntfs_permission_lookup--; // turn off check permission again
#endif /*Q_OS_WIN32*/
return result;
}