Add ZipReader and XmlStreamReader

src/xlsx/xlsxzipreader_p.h

@@ -0,0 +1,31 @@
+#ifndef QXLSX_XLSXZIPREADER_P_H
+#define QXLSX_XLSXZIPREADER_P_H
+
+#include "xlsxglobal.h"
+#include <QScopedPointer>
+#include <QStringList>
+class QZipReader;
+class QIODevice;
+
+namespace QXlsx {
+
+class XLSX_AUTOTEST_EXPORT ZipReader
+{
+public:
+    explicit ZipReader(const QString &fileName);
+    explicit ZipReader(QIODevice *device);
+    ~ZipReader();
+    bool exists() const;
+    QStringList filePaths() const;
+    QByteArray fileData(const QString &fileName) const;
+
+private:
+    Q_DISABLE_COPY(ZipReader)
+    void init();
+    QScopedPointer<QZipReader> m_reader;
+    QStringList m_filePaths;
+};
+
+} // namespace QXlsx
+
+#endif // QXLSX_XLSXZIPREADER_P_H