--- /dev/null
+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
+// Digital Ltd. LLC
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Industrial Light & Magic nor the names of
+// its contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+#ifndef INCLUDED_IMF_STD_IO_H
+#define INCLUDED_IMF_STD_IO_H
+
+//-----------------------------------------------------------------------------
+//
+// Low-level file input and output for OpenEXR
+// based on C++ standard iostreams.
+//
+//-----------------------------------------------------------------------------
+
+#include <ImfIO.h>
+#include <fstream>
+#include <sstream>
+
+namespace Imf {
+
+//-------------------------------------------
+// class StdIFStream -- an implementation of
+// class IStream based on class std::ifstream
+//-------------------------------------------
+
+class StdIFStream: public IStream
+{
+ public:
+
+ //-------------------------------------------------------
+ // A constructor that opens the file with the given name.
+ // The destructor will close the file.
+ //-------------------------------------------------------
+
+ StdIFStream (const char fileName[]);
+
+
+ //---------------------------------------------------------
+ // A constructor that uses a std::ifstream that has already
+ // been opened by the caller. The StdIFStream's destructor
+ // will not close the std::ifstream.
+ //---------------------------------------------------------
+
+ StdIFStream (std::ifstream &is, const char fileName[]);
+
+
+ virtual ~StdIFStream ();
+
+ virtual bool read (char c[/*n*/], int n);
+ virtual Int64 tellg ();
+ virtual void seekg (Int64 pos);
+ virtual void clear ();
+
+ private:
+
+ std::ifstream * _is;
+ bool _deleteStream;
+};
+
+
+//-------------------------------------------
+// class StdOFStream -- an implementation of
+// class OStream based on class std::ofstream
+//-------------------------------------------
+
+class StdOFStream: public OStream
+{
+ public:
+
+ //-------------------------------------------------------
+ // A constructor that opens the file with the given name.
+ // The destructor will close the file.
+ //-------------------------------------------------------
+
+ StdOFStream (const char fileName[]);
+
+
+ //---------------------------------------------------------
+ // A constructor that uses a std::ofstream that has already
+ // been opened by the caller. The StdOFStream's destructor
+ // will not close the std::ofstream.
+ //---------------------------------------------------------
+
+ StdOFStream (std::ofstream &os, const char fileName[]);
+
+
+ virtual ~StdOFStream ();
+
+ virtual void write (const char c[/*n*/], int n);
+ virtual Int64 tellp ();
+ virtual void seekp (Int64 pos);
+
+ private:
+
+ std::ofstream * _os;
+ bool _deleteStream;
+};
+
+
+//------------------------------------------------
+// class StdOSStream -- an implementation of class
+// OStream, based on class std::ostringstream
+//------------------------------------------------
+
+class StdOSStream: public OStream
+{
+ public:
+
+ StdOSStream ();
+
+ virtual void write (const char c[/*n*/], int n);
+ virtual Int64 tellp ();
+ virtual void seekp (Int64 pos);
+
+ std::string str () const {return _os.str();}
+
+ private:
+
+ std::ostringstream _os;
+};
+
+
+} // namespace Imf
+
+#endif