Core/File: Add SetSize method (currently missing Posix implementation!)

Former-commit-id: c9ffb545485d90940d620e94fd25a7256d62ab58

src/Nazara/Core/File.cpp

@@ -454,6 +454,25 @@ namespace Nz
 		return true;
 	}
 
+    /*!
+    * \brief Sets the size of the file
+    * \return true if the file size has correctly changed
+    *
+    * \param size The size the file should have after this call
+    *
+    * \remark The cursor position is not affected by this call
+    * \remark The file must be open in write mode
+    */
+    bool File::SetSize(UInt64 size)
+    {
+        NazaraLock(m_mutex)
+
+        NazaraAssert(IsOpen(), "File is not open");
+        NazaraAssert(IsWritable(), "File is not writable");
+
+        return m_impl->SetSize(size);
+    }
+
 	/*!
 	* \brief Sets the file path
 	* \return A reference to this