--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xlsx/xlsxrelationships.cpp	Tue Mar 22 10:38:08 2016 +0100
@@ -0,0 +1,189 @@
+/****************************************************************************
+** 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 "xlsxrelationships_p.h"
+#include <QXmlStreamWriter>
+#include <QXmlStreamReader>
+#include <QDir>
+#include <QFile>
+#include <QBuffer>
+
+namespace QXlsx {
+
+const QString schema_doc = QStringLiteral("http://schemas.openxmlformats.org/officeDocument/2006/relationships");
+const QString schema_msPackage = QStringLiteral("http://schemas.microsoft.com/office/2006/relationships");
+const QString schema_package = QStringLiteral("http://schemas.openxmlformats.org/package/2006/relationships");
+//const QString schema_worksheet = QStringLiteral("http://schemas.openxmlformats.org/officeDocument/2006/relationships");
+Relationships::Relationships()
+{
+}
+
+QList<XlsxRelationship> Relationships::documentRelationships(const QString &relativeType) const
+{
+    return relationships(schema_doc + relativeType);
+}
+
+void Relationships::addDocumentRelationship(const QString &relativeType, const QString &target)
+{
+    addRelationship(schema_doc + relativeType, target);
+}
+
+QList<XlsxRelationship> Relationships::msPackageRelationships(const QString &relativeType) const
+{
+    return relationships(schema_msPackage + relativeType);
+}
+
+void Relationships::addMsPackageRelationship(const QString &relativeType, const QString &target)
+{
+    addRelationship(schema_msPackage + relativeType, target);
+}
+
+QList<XlsxRelationship> Relationships::packageRelationships(const QString &relativeType) const
+{
+    return relationships(schema_package + relativeType);
+}
+
+void Relationships::addPackageRelationship(const QString &relativeType, const QString &target)
+{
+    addRelationship(schema_package + relativeType, target);
+}
+
+QList<XlsxRelationship> Relationships::worksheetRelationships(const QString &relativeType) const
+{
+    return relationships(schema_doc + relativeType);
+}
+
+void Relationships::addWorksheetRelationship(const QString &relativeType, const QString &target, const QString &targetMode)
+{
+    addRelationship(schema_doc + relativeType, target, targetMode);
+}
+
+QList<XlsxRelationship> Relationships::relationships(const QString &type) const
+{
+    QList<XlsxRelationship> res;
+    foreach (XlsxRelationship ship, m_relationships) {
+        if (ship.type == type)
+            res.append(ship);
+    }
+    return res;
+}
+
+void Relationships::addRelationship(const QString &type, const QString &target, const QString &targetMode)
+{
+    XlsxRelationship relation;
+    relation.id = QStringLiteral("rId%1").arg(m_relationships.size()+1);
+    relation.type = type;
+    relation.target = target;
+    relation.targetMode = targetMode;
+
+    m_relationships.append(relation);
+}
+
+void Relationships::saveToXmlFile(QIODevice *device) const
+{
+    QXmlStreamWriter writer(device);
+
+    writer.writeStartDocument(QStringLiteral("1.0"), true);
+    writer.writeStartElement(QStringLiteral("Relationships"));
+    writer.writeAttribute(QStringLiteral("xmlns"), QStringLiteral("http://schemas.openxmlformats.org/package/2006/relationships"));
+    foreach (XlsxRelationship relation, m_relationships) {
+        writer.writeStartElement(QStringLiteral("Relationship"));
+        writer.writeAttribute(QStringLiteral("Id"), relation.id);
+        writer.writeAttribute(QStringLiteral("Type"), relation.type);
+        writer.writeAttribute(QStringLiteral("Target"), relation.target);
+        if (!relation.targetMode.isNull())
+            writer.writeAttribute(QStringLiteral("TargetMode"), relation.targetMode);
+        writer.writeEndElement();
+    }
+    writer.writeEndElement();//Relationships
+    writer.writeEndDocument();
+}
+
+QByteArray Relationships::saveToXmlData() const
+{
+    QByteArray data;
+    QBuffer buffer(&data);
+    buffer.open(QIODevice::WriteOnly);
+    saveToXmlFile(&buffer);
+
+    return data;
+}
+
+bool Relationships::loadFromXmlFile(QIODevice *device)
+{
+    clear();
+    QXmlStreamReader reader(device);
+    while (!reader.atEnd()) {
+         QXmlStreamReader::TokenType token = reader.readNext();
+         if (token == QXmlStreamReader::StartElement) {
+             if (reader.name() == QStringLiteral("Relationship")) {
+                 QXmlStreamAttributes attributes = reader.attributes();
+                 XlsxRelationship relationship;
+                 relationship.id = attributes.value(QLatin1String("Id")).toString();
+                 relationship.type = attributes.value(QLatin1String("Type")).toString();
+                 relationship.target = attributes.value(QLatin1String("Target")).toString();
+                 relationship.targetMode = attributes.value(QLatin1String("TargetMode")).toString();
+                 m_relationships.append(relationship);
+             }
+         }
+
+         if (reader.hasError())
+            return false;
+    }
+    return true;
+}
+
+bool Relationships::loadFromXmlData(const QByteArray &data)
+{
+    QBuffer buffer;
+    buffer.setData(data);
+    buffer.open(QIODevice::ReadOnly);
+    return loadFromXmlFile(&buffer);
+}
+
+XlsxRelationship Relationships::getRelationshipById(const QString &id) const
+{
+    foreach (XlsxRelationship ship, m_relationships) {
+        if (ship.id == id)
+            return ship;
+    }
+    return XlsxRelationship();
+}
+
+void Relationships::clear()
+{
+    m_relationships.clear();
+}
+
+int Relationships::count() const
+{
+    return m_relationships.count();
+}
+
+bool Relationships::isEmpty() const
+{
+    return m_relationships.isEmpty();
+}
+
+} //namespace