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