2 files changed, 23 insertions, 0 deletions
diff --git a/src/corelib/io/qnoncontiguousbytedevice.cpp b/src/corelib/io/qnoncontiguousbytedevice.cpp
index bf58eee8df..1a0591ea8d 100644
--- a/src/corelib/io/qnoncontiguousbytedevice.cpp
+++ b/src/corelib/io/qnoncontiguousbytedevice.cpp
@@ -245,6 +245,12 @@ qint64 QNonContiguousByteDeviceByteArrayImpl::size()
     return byteArray->size();
 }
 
+qint64 QNonContiguousByteDeviceByteArrayImpl::pos()
+{
+    return currentPosition;
+}
+
+
 QNonContiguousByteDeviceRingBufferImpl::QNonContiguousByteDeviceRingBufferImpl(QSharedPointer<QRingBuffer> rb)
     : QNonContiguousByteDevice(), currentPosition(0)
 {
@@ -296,6 +302,11 @@ qint64 QNonContiguousByteDeviceRingBufferImpl::size()
     return ringBuffer->size();
 }
 
+qint64 QNonContiguousByteDeviceRingBufferImpl::pos()
+{
+    return currentPosition;
+}
+
 QNonContiguousByteDeviceIoDeviceImpl::QNonContiguousByteDeviceIoDeviceImpl(QIODevice *d)
     : QNonContiguousByteDevice(),
     currentReadBuffer(0), currentReadBufferSize(16*1024),
@@ -415,6 +426,14 @@ qint64 QNonContiguousByteDeviceIoDeviceImpl::size()
     return device->size() - initialPosition;
 }
 
+qint64 QNonContiguousByteDeviceIoDeviceImpl::pos()
+{
+    if (device->isSequential())
+        return -1;
+
+    return device->pos();
+}
+
 QByteDeviceWrappingIoDevice::QByteDeviceWrappingIoDevice(QNonContiguousByteDevice *bd) : QIODevice((QObject*)0)
 {
     byteDevice = bd;
diff --git a/src/corelib/io/qnoncontiguousbytedevice_p.h b/src/corelib/io/qnoncontiguousbytedevice_p.h
index b6966ebd85..d1a99a14ab 100644
--- a/src/corelib/io/qnoncontiguousbytedevice_p.h
+++ b/src/corelib/io/qnoncontiguousbytedevice_p.h
@@ -69,6 +69,7 @@ public:
     virtual const char* readPointer(qint64 maximumLength, qint64 &len) = 0;
     virtual bool advanceReadPointer(qint64 amount) = 0;
     virtual bool atEnd() = 0;
+    virtual qint64 pos() { return -1; }
     virtual bool reset() = 0;
     void disableReset();
     bool isResetDisabled() { return resetDisabled; }
@@ -108,6 +109,7 @@ public:
     bool atEnd();
     bool reset();
     qint64 size();
+    qint64 pos();
 protected:
     QByteArray* byteArray;
     qint64 currentPosition;
@@ -123,6 +125,7 @@ public:
     bool atEnd();
     bool reset();
     qint64 size();
+    qint64 pos();
 protected:
     QSharedPointer<QRingBuffer> ringBuffer;
     qint64 currentPosition;
@@ -140,6 +143,7 @@ public:
     bool atEnd();
     bool reset();
     qint64 size();
+    qint64 pos();
 protected:
     QIODevice* device;
     QByteArray* currentReadBuffer;