Filestream option

Monkey Forums/Monkey Bug Reports/Filestream option

Xaron

(Posted 2013) [#1]

Hi all,

I just want to write a log file. Unfortunately if there is a crash, the latest messages in the stream are not written. So I just changed the filetest example from the bananas folder that way:


#If LANG<>"cpp" And LANG<>"java" And LANG<>"cs"
#Error "File streams are not supported on this target"
#Endif

Import mojo

Import brl

Class MyApp Extends App

	Method OnCreate()
	
		SetUpdateRate 60
		
	End
	
	Method OnUpdate()
	
		For Local i:=0 Until 20
    		  Local file:=FileStream.Open( "monkey://internal/test_file","u" )
		  file.WriteInt i
                  file.Close
		Next
		
	End
	
	Method OnRender()
	
		Cls
		DrawText "Hello world",0,0
		
		Local file:=FileStream.Open( "monkey://internal/test_file","r" )
		If Not file Return
		
		Local y:=0
		While Not file.Eof()
			Local i:=file.ReadInt()
			DrawText i,0,y
			y+=12
		Wend
		
		file.Close
		
	End
	
End

Function Main()

	New MyApp
	
End

But that doesn't work as you can easily test. Opening a file for updating ("u") writing to it and closing it afterwards doesn't work as expected.

marksibly

(Posted 2013) [#2]

Hi,

Update<>append - it basically just means the file isn't nuked when opened, which is what 'w' does.

I'll make this clearer in the docs, and probably add 'append'...

Xaron

(Posted 2013) [#3]

Ah thanks Mark, that makes sense. Yes in that case an 'append' option would be great. Or something like 'flush'?

Xaron

(Posted 2013) [#4]

Have you had any chance to add this already?

marksibly

(Posted 2013) [#5]

Will add it for next release.