--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xlsx/xlsxdocpropscore.cpp	Tue Mar 22 10:38:08 2016 +0100
@@ -0,0 +1,168 @@
+/****************************************************************************
+** Copyright (c) 2013-2014 Debao Zhang <hello@debao.me>
+** All right reserved.
+**
+** Permission is hereby granted, free of charge, to any person obtaining
+** a copy of this software and associated documentation files (the
+** "Software"), to deal in the Software without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Software, and to
+** permit persons to whom the Software is furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be
+** included in all copies or substantial portions of the Software.
+**
+** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+**
+****************************************************************************/
+#include "xlsxdocpropscore_p.h"
+
+#include <QXmlStreamWriter>
+#include <QXmlStreamReader>
+#include <QDir>
+#include <QFile>
+#include <QDateTime>
+#include <QDebug>
+#include <QBuffer>
+
+namespace QXlsx {
+
+DocPropsCore::DocPropsCore(CreateFlag flag)
+    :AbstractOOXmlFile(flag)
+{
+}
+
+bool DocPropsCore::setProperty(const QString &name, const QString &value)
+{
+    static QStringList validKeys;
+    if (validKeys.isEmpty()) {
+        validKeys << QStringLiteral("title") << QStringLiteral("subject")
+                  << QStringLiteral("keywords") << QStringLiteral("description")
+                  << QStringLiteral("category") << QStringLiteral("status")
+                  << QStringLiteral("created") << QStringLiteral("creator");
+    }
+
+    if (!validKeys.contains(name))
+        return false;
+
+    if (value.isEmpty())
+        m_properties.remove(name);
+    else
+        m_properties[name] = value;
+
+    return true;
+}
+
+QString DocPropsCore::property(const QString &name) const
+{
+    if (m_properties.contains(name))
+        return m_properties[name];
+
+    return QString();
+}
+
+QStringList DocPropsCore::propertyNames() const
+{
+    return m_properties.keys();
+}
+
+void DocPropsCore::saveToXmlFile(QIODevice *device) const
+{
+    QXmlStreamWriter writer(device);
+    const QString cp = QStringLiteral("http://schemas.openxmlformats.org/package/2006/metadata/core-properties");
+    const QString dc = QStringLiteral("http://purl.org/dc/elements/1.1/");
+    const QString dcterms = QStringLiteral("http://purl.org/dc/terms/");
+    const QString dcmitype = QStringLiteral("http://purl.org/dc/dcmitype/");
+    const QString xsi = QStringLiteral("http://www.w3.org/2001/XMLSchema-instance");
+    writer.writeStartDocument(QStringLiteral("1.0"), true);
+    writer.writeStartElement(QStringLiteral("cp:coreProperties"));
+    writer.writeNamespace(cp, QStringLiteral("cp"));
+    writer.writeNamespace(dc, QStringLiteral("dc"));
+    writer.writeNamespace(dcterms, QStringLiteral("dcterms"));
+    writer.writeNamespace(dcmitype, QStringLiteral("dcmitype"));
+    writer.writeNamespace(xsi, QStringLiteral("xsi"));
+
+    if (m_properties.contains(QStringLiteral("title")))
+        writer.writeTextElement(dc, QStringLiteral("title"), m_properties[QStringLiteral("title")]);
+
+    if (m_properties.contains(QStringLiteral("subject")))
+        writer.writeTextElement(dc, QStringLiteral("subject"), m_properties[QStringLiteral("subject")]);
+
+    writer.writeTextElement(dc, QStringLiteral("creator"), m_properties.contains(QStringLiteral("creator")) ? m_properties[QStringLiteral("creator")] : QStringLiteral("Qt Xlsx Library"));
+
+    if (m_properties.contains(QStringLiteral("keywords")))
+        writer.writeTextElement(cp, QStringLiteral("keywords"), m_properties[QStringLiteral("keywords")]);
+
+    if (m_properties.contains(QStringLiteral("description")))
+        writer.writeTextElement(dc, QStringLiteral("description"), m_properties[QStringLiteral("description")]);
+
+    writer.writeTextElement(cp, QStringLiteral("lastModifiedBy"), m_properties.contains(QStringLiteral("creator")) ? m_properties[QStringLiteral("creator")] : QStringLiteral("Qt Xlsx Library"));
+
+    writer.writeStartElement(dcterms, QStringLiteral("created"));
+    writer.writeAttribute(xsi, QStringLiteral("type"), QStringLiteral("dcterms:W3CDTF"));
+    writer.writeCharacters(m_properties.contains(QStringLiteral("created")) ? m_properties[QStringLiteral("created")] : QDateTime::currentDateTime().toString(Qt::ISODate));
+    writer.writeEndElement();//dcterms:created
+
+    writer.writeStartElement(dcterms, QStringLiteral("modified"));
+    writer.writeAttribute(xsi, QStringLiteral("type"), QStringLiteral("dcterms:W3CDTF"));
+    writer.writeCharacters(QDateTime::currentDateTime().toString(Qt::ISODate));
+    writer.writeEndElement();//dcterms:created
+
+    if (m_properties.contains(QStringLiteral("category")))
+        writer.writeTextElement(cp, QStringLiteral("category"), m_properties[QStringLiteral("category")]);
+
+    if (m_properties.contains(QStringLiteral("status")))
+        writer.writeTextElement(cp, QStringLiteral("contentStatus"), m_properties[QStringLiteral("status")]);
+
+    writer.writeEndElement(); //cp:coreProperties
+    writer.writeEndDocument();
+}
+
+bool DocPropsCore::loadFromXmlFile(QIODevice *device)
+{
+    QXmlStreamReader reader(device);
+
+    const QString cp = QStringLiteral("http://schemas.openxmlformats.org/package/2006/metadata/core-properties");
+    const QString dc = QStringLiteral("http://purl.org/dc/elements/1.1/");
+    const QString dcterms = QStringLiteral("http://purl.org/dc/terms/");
+
+    while (!reader.atEnd()) {
+         QXmlStreamReader::TokenType token = reader.readNext();
+         if (token == QXmlStreamReader::StartElement) {
+             const QStringRef nsUri = reader.namespaceUri();
+             const QStringRef name = reader.name();
+             if (name == QStringLiteral("subject") && nsUri == dc) {
+                 setProperty(QStringLiteral("subject"), reader.readElementText());
+             } else if (name == QStringLiteral("title") && nsUri == dc) {
+                 setProperty(QStringLiteral("title"), reader.readElementText());
+             } else if (name == QStringLiteral("creator") && nsUri == dc) {
+                 setProperty(QStringLiteral("creator"), reader.readElementText());
+             } else if (name == QStringLiteral("description") && nsUri == dc) {
+                 setProperty(QStringLiteral("description"), reader.readElementText());
+             } else if (name == QStringLiteral("keywords") && nsUri == cp) {
+                 setProperty(QStringLiteral("keywords"), reader.readElementText());
+             } else if (name == QStringLiteral("created") && nsUri == dcterms) {
+                 setProperty(QStringLiteral("created"), reader.readElementText());
+             } else if (name == QStringLiteral("category") && nsUri == cp) {
+                 setProperty(QStringLiteral("category"), reader.readElementText());
+             } else if (name == QStringLiteral("contentStatus") && nsUri == cp) {
+                 setProperty(QStringLiteral("status"), reader.readElementText());
+             }
+         }
+
+         if (reader.hasError()) {
+             qDebug()<<"Error when read doc props core file."<<reader.errorString();
+
+         }
+    }
+    return true;
+}
+
+} //namespace