Add IWriteFile::flush interface (thx @ JLouisB for the patch).

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@5114 dfc29bdd-3216-0410-991c-e03cc46cb475

changes.txt

 --------------------------
 Changes in 1.9 (not yet released)
 
+- Add IWriteFile::flush interface (thx @ JLouisB for the patch).
 - CLightSceneNode::updateAbsolutePosition does now light recalculations. This is to fix using animators with lights.
 - Fix collada export for objects with rotations around more than 1 axis.
 - Add ISceneNodeAnimatorCameraMaya::setTargetMinDistance and getTargetMinDistance.

include/IWriteFile.h

@@ -38,6 +38,10 @@ namespace io
 		//! Get name of file.
 		/** \return File name as zero terminated character string. */
 		virtual const path& getFileName() const = 0;
+
+		//! Flush the content of the buffer in the file
+		/** \return True if successful, otherwise false. */
+		virtual bool flush() = 0;
 	};
 
 } // end namespace io

source/Irrlicht/CMemoryFile.cpp

@@ -163,6 +163,10 @@ const io::path& CMemoryWriteFile::getFileName() const
 	return Filename;
 }
 
+bool CMemoryWriteFile::flush()
+{
+	return true; // no buffering, so nothing to do
+}
 
 IReadFile* createMemoryReadFile(const void* memory, long size, const io::path& fileName, bool deleteMemoryWhenDropped)
 {

source/Irrlicht/CMemoryFile.h

@@ -77,6 +77,8 @@ namespace io
 		//! returns name of file
 		virtual const io::path& getFileName() const _IRR_OVERRIDE_;
 
+		virtual bool flush() _IRR_OVERRIDE_;
+
 	private:
 
 		void *Buffer;

source/Irrlicht/CWriteFile.cpp

@@ -105,7 +105,14 @@ const io::path& CWriteFile::getFileName() const
 	return Filename;
 }
 
+//! Flush the content of the buffer in the file
+bool CWriteFile::flush()
+{
+	if (!isOpen())
+		return false;
 
+	return !(bool) fflush(File);
+}
 
 IWriteFile* CWriteFile::createWriteFile(const io::path& fileName, bool append)
 {

source/Irrlicht/CWriteFile.h

@@ -38,6 +38,9 @@ namespace io
 		//! Returns name of file.
 		virtual const io::path& getFileName() const _IRR_OVERRIDE_;
 
+		//! Flush the content of the buffer in the file
+		virtual bool flush() _IRR_OVERRIDE_;
+
 		//! returns if file is open
 		bool isOpen() const;
 

tools/GUIEditor/CMemoryReadWriteFile.cpp

@@ -93,3 +93,7 @@ s32 CMemoryReadWriteFile::read(void* buffer, u32 sizeToRead)
 	return sizeToRead;
 }
 
+bool CMemoryReadWriteFile::flush()
+{
+	return true;	// no buffering, nothing to do
+}

tools/GUIEditor/CMemoryReadWriteFile.h

@@ -55,6 +55,9 @@ namespace io
 		//! \return Returns the file name as zero terminated character string.
 		virtual const io::path& getFileName() const;
 
+		//! Flush the content of the buffer in the file
+		virtual bool flush() _IRR_OVERRIDE_;
+
 		//! Returns file data as an array
 		core::array<c8>& getData();