Added utils to core lib

randomdevice.cpp

@@ -0,0 +1,36 @@
+#include "randomdevice.h"
+
+#include <QDebug>
+
+RandomDevice::RandomDevice(qint64 size, QObject *parent) :
+    QIODevice(parent),
+    m_pos(0),
+    m_size(size)
+{
+}
+
+qint64 RandomDevice::pos() const
+{
+    return m_pos;
+}
+
+qint64 RandomDevice::size() const
+{
+    return m_size;
+}
+
+qint64 RandomDevice::readData(char *data, qint64 maxlen)
+{
+    std::generate_n(data, maxlen, std::rand);
+    m_pos += maxlen;
+    return maxlen;
+}
+
+qint64 RandomDevice::writeData(const char *data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+
+    qCritical() << "cannot write to this device!";
+    return 0;
+}