4.44 beta

CPP/7zip/Common/LimitedStreams.cpp

@@ -0,0 +1,24 @@
+// LimitedStreams.cpp
+
+#include "StdAfx.h"
+
+#include "LimitedStreams.h"
+#include "../../Common/Defs.h"
+
+STDMETHODIMP CLimitedSequentialInStream::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  UInt32 realProcessedSize = 0;
+  UInt32 sizeToRead = (UInt32)MyMin((_size - _pos), (UInt64)size);
+  HRESULT result = S_OK;
+  if (sizeToRead > 0)
+  {
+    result = _stream->Read(data, sizeToRead, &realProcessedSize);
+    _pos += realProcessedSize;
+    if (realProcessedSize == 0)
+      _wasFinished = true;
+  }
+  if(processedSize != NULL)
+    *processedSize = realProcessedSize;
+  return result;
+}
+