Add IReadFile::getType() interface to all users to find out what kind of class implements that interface.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5798 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

@@ -1,5 +1,6 @@
 --------------------------
 Changes in 1.9 (not yet released)
+- Add IReadFile::getType() interface to all users to find out what kind of class implements that interface.
 - .dae/Collada reader/writer now handle whitespace in texture-filenames with escape characters (handle them as xs:anyURI).
 - Add function string::insert.
 - EditBox now still allows overwriting characters when the text-length is at max.

include/EReadFileType.h

@@ -0,0 +1,34 @@
+// Copyright (C) Michael Zeilfelder
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#ifndef __E_READ_FILE_TYPES_H_INCLUDED__
+#define __E_READ_FILE_TYPES_H_INCLUDED__
+
+#include "irrTypes.h"
+
+namespace irr
+{
+namespace io
+{
+
+	//! An enumeration for different class types implementing IReadFile
+	enum EREAD_FILE_TYPE
+	{
+		//! CReadFile
+		ERFT_READ_FILE  = MAKE_IRR_ID('r','e','a','d'),
+
+		//! CMemoryReadFile
+		ERFT_MEMORY_READ_FILE = MAKE_IRR_ID('r','m','e','m'),
+
+		//! CLimitReadFile
+		ERFT_LIMIT_READ_FILE = MAKE_IRR_ID('r','l','i','m'),
+
+		//! Unknown type
+		EFIT_UNKNOWN        = MAKE_IRR_ID('u','n','k','n'),
+	};
+} // end namespace io
+} // end namespace irr
+
+
+#endif

include/IReadFile.h

@@ -7,6 +7,7 @@
 
 #include "IReferenceCounted.h"
 #include "coreutil.h"
+#include "EReadFileType.h"
 
 namespace irr
 {
@@ -42,6 +43,12 @@ namespace io
 		//! Get name of file.
 		/** \return File name as zero terminated character string. */
 		virtual const io::path& getFileName() const = 0;
+
+		//! Get the type of the class implementing this interface
+		virtual EREAD_FILE_TYPE getType() const
+		{
+			return EFIT_UNKNOWN;
+		}
 	};
 
 	//! Internal function, please do not use.

source/Irrlicht/CLimitReadFile.h

@@ -46,6 +46,12 @@ namespace io
 		//! returns name of file
 		virtual const io::path& getFileName() const _IRR_OVERRIDE_;
 
+		//! Get the type of the class implementing this interface
+		virtual EREAD_FILE_TYPE getType() const _IRR_OVERRIDE_
+		{
+			return ERFT_LIMIT_READ_FILE;
+		}
+
 	private:
 
 		io::path Filename;

source/Irrlicht/CMemoryFile.h

@@ -43,6 +43,12 @@ namespace io
 		//! returns name of file
 		virtual const io::path& getFileName() const _IRR_OVERRIDE_;
 
+		//! Get the type of the class implementing this interface
+		virtual EREAD_FILE_TYPE getType() const _IRR_OVERRIDE_
+		{
+			return ERFT_MEMORY_READ_FILE;
+		}
+
 	private:
 
 		const void *Buffer;

source/Irrlicht/CReadFile.h

@@ -47,6 +47,12 @@ namespace io
 		//! returns name of file
 		virtual const io::path& getFileName() const _IRR_OVERRIDE_;
 
+		//! Get the type of the class implementing this interface
+		virtual EREAD_FILE_TYPE getType() const _IRR_OVERRIDE_
+		{
+			return ERFT_READ_FILE;
+		}
+
 		//! create read file on disk.
 		static IReadFile* createReadFile(const io::path& fileName);