From: "sketchitup@..." <sketchitup@...>
Date: 2007-07-26T03:19:59+09:00
Subject: Re: Detecting the end of a text file...

On Jul 25, 10:02 am, "Luis Parravicini" <lparr...@gmail.com> wrote:
> On 7/25/07, sketchi...@gmail.com <sketchi...@gmail.com> wrote:
>
> > I'm just beginning to learn the Ruby progamming language, although I
> > have some previous programming experience in Java. I would like to
> > know if how I can detect the end of a file when parsing a text file in
> > Ruby. I don't want to throw an error or exception when I reach the end
> > of the file, I just want to tell my parser to stop parsing.
>
> As far as I know, all the IO methods return nil on EOF except for
> readline. You could read the file with:
>
> File.open(path) do |f|
>   while line=f.gets
>       # parse
>   end
> end
>
> or
>
> File.open(path) do |f|
>   begin
>     loop do
>       line = f.readline
>       # parse
>     end
>   rescue EOFError
>   end
>
> or slurp the whole file with IO.readline(path)
>
> --
> Luis Parravicinihttp://ktulu.com.ar/blog/

Thanks for the responses Luis. I think I need to read a little more
about errors and exceptions in Ruby before I use your examples.

Thanks,

The SketchUp Artist