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diff --git a/libs/assimp/contrib/openddlparser/include/openddlparser/OpenDDLStream.h b/libs/assimp/contrib/openddlparser/include/openddlparser/OpenDDLStream.h
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+/*-----------------------------------------------------------------------------------------------
+The MIT License (MIT)
+
+Copyright (c) 2014-2020 Kim Kulling
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+-----------------------------------------------------------------------------------------------*/
+#pragma once
+
+#include <openddlparser/OpenDDLCommon.h>
+
+BEGIN_ODDLPARSER_NS
+
+//-------------------------------------------------------------------------------------------------
+/// @ingroup IOStreamBase
+/// @brief This class represents the stream to write out.
+//-------------------------------------------------------------------------------------------------
+class DLL_ODDLPARSER_EXPORT StreamFormatterBase {
+public:
+ /// @brief The class constructor.
+ StreamFormatterBase();
+
+ /// @brief The class destructor, virtual.
+ virtual ~StreamFormatterBase();
+
+ /// @brief Will format the string and return the new formatted result.
+ /// @param statement [in] The string to reformat.
+ /// @return The reformatted result.
+ virtual std::string format(const std::string &statement);
+};
+
+//-------------------------------------------------------------------------------------------------
+/// @ingroup IOStreamBase
+/// @brief This class represents the stream to write out.
+//-------------------------------------------------------------------------------------------------
+class DLL_ODDLPARSER_EXPORT IOStreamBase {
+public:
+ /// @brief The class constructor with the formatter.
+ /// @param formatter [in] The formatter to use.
+ explicit IOStreamBase(StreamFormatterBase *formatter = nullptr);
+
+ /// @brief The class destructor, virtual.
+ virtual ~IOStreamBase();
+
+ /// @brief Will open the stream.
+ /// @param name [in] The name for the stream.
+ /// @return true, if the stream was opened successfully, false if not.
+ virtual bool open(const std::string &name);
+
+ /// @brief Will close the stream.
+ /// @return true, if the stream was closed successfully, false if not.
+ virtual bool close();
+
+ /// @brief Returns true, if the stream is open.
+ /// @return true, if the stream is open, false if not.
+ virtual bool isOpen() const;
+
+ /// @brief Will read a string from the stream.
+ /// @param sizeToRead [in] The size to read in bytes.
+ /// @param statement [out] The read statements.
+ /// @return The bytes read from the stream.
+ virtual size_t read(size_t sizeToRead, std::string &statement);
+
+ /// @brief Will write a string into the stream.
+ /// @param statement [in] The string to write.
+ /// @return The bytes written into the stream.
+ virtual size_t write(const std::string &statement);
+
+private:
+ StreamFormatterBase *m_formatter;
+ FILE *m_file;
+};
+
+END_ODDLPARSER_NS