1 files changed, 71 insertions, 0 deletions
diff --git a/lib/common/StreamableMemBlock.h b/lib/common/StreamableMemBlock.h
new file mode 100644
index 00000000..250c0aea
--- /dev/null
+++ b/lib/common/StreamableMemBlock.h
@@ -0,0 +1,71 @@
+// --------------------------------------------------------------------------
+//
+// File
+//		Name:    StreamableMemBlock.h
+//		Purpose: Memory blocks which can be loaded and saved from streams
+//		Created: 2003/09/05
+//
+// --------------------------------------------------------------------------
+
+#ifndef STREAMABLEMEMBLOCK__H
+#define STREAMABLEMEMBLOCK__H
+
+class IOStream;
+
+// --------------------------------------------------------------------------
+//
+// Class
+//		Name:    StreamableMemBlock
+//		Purpose: Memory blocks which can be loaded and saved from streams
+//		Created: 2003/09/05
+//
+// --------------------------------------------------------------------------
+class StreamableMemBlock
+{
+public:
+	StreamableMemBlock();
+	StreamableMemBlock(int Size);
+	StreamableMemBlock(void *pBuffer, int Size);
+	StreamableMemBlock(const StreamableMemBlock &rToCopy);
+	~StreamableMemBlock();
+	
+	void Set(const StreamableMemBlock &rBlock);
+	void Set(void *pBuffer, int Size);
+	void Set(IOStream &rStream, int Timeout);
+	StreamableMemBlock &operator=(const StreamableMemBlock &rBlock)
+	{
+		Set(rBlock);
+		return *this;
+	}
+
+	void ReadFromStream(IOStream &rStream, int Timeout);
+	void WriteToStream(IOStream &rStream) const;
+	
+	static void WriteEmptyBlockToStream(IOStream &rStream);
+	
+	void *GetBuffer() const;
+	
+	// Size of block
+	int GetSize() const {return mSize;}
+
+	// Buffer empty?
+	bool IsEmpty() const {return mSize == 0;}
+
+	// Clear the contents of the block
+	void Clear() {FreeBlock();}
+	
+	bool operator==(const StreamableMemBlock &rCompare) const;
+
+	void ResizeBlock(int Size);
+
+protected:	// be careful with these!
+	void AllocateBlock(int Size);
+	void FreeBlock();
+
+private:
+	void *mpBuffer;
+	int mSize;
+};
+
+#endif // STREAMABLEMEMBLOCK__H
+