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cs440-acg/ext/openexr/OpenEXR/IlmImf/ImfStdIO.h

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+///////////////////////////////////////////////////////////////////////////
+//
+// 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 "ImfNamespace.h"
+#include "ImfExport.h"
+
+#include <fstream>
+#include <sstream>
+
+
+OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
+
+//-------------------------------------------
+// class StdIFStream -- an implementation of
+// class OPENEXR_IMF_INTERNAL_NAMESPACE::IStream based on class std::ifstream
+//-------------------------------------------
+
+class IMF_EXPORT StdIFStream: public OPENEXR_IMF_INTERNAL_NAMESPACE::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 OPENEXR_IMF_INTERNAL_NAMESPACE::OStream based on class std::ofstream
+//-------------------------------------------
+
+class IMF_EXPORT StdOFStream: public OPENEXR_IMF_INTERNAL_NAMESPACE::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
+// OPENEXR_IMF_INTERNAL_NAMESPACE::OStream, based on class std::ostringstream
+//------------------------------------------------
+
+class IMF_EXPORT StdOSStream: public OPENEXR_IMF_INTERNAL_NAMESPACE::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;
+};
+
+
+OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
+
+#endif