From: khaines@...
Date: 2007-04-17T23:49:11+09:00
Subject: Re: How to check if the logfile of a Logger instance is closed?

On Tue, 17 Apr 2007, ChrisKaelin wrote:

> If I do:
>
> l = Logger.new("testlog")
> l.close
>
> now if I want to close it again, I get:
> IOError: closed stream
>
> So far, I have checked for this error (by rescue clause), to see, if
> the logfile is already closed. Is there a more elegant way to check if
> the instance (i.e. the logfile stream) is already closed?

Logger doesn't provide a method to check this, so what you are doing is 
right.

You can look at log4r (http://log4r.sourceforge.net/) for a logger that 
supports a closed? method, and which is pretty flexible.

You might also look at my asynchronous logger, Analogger 
(http://analogger.swiftcore.org).  It supports a closed? method, as 
well.

It also looks like it would be pretty easy to subclass Logger and 
LogDevice to create a version that implements closed?.


Kirk Haines