From: Bino Oetomo <bino@...>
Date: 2007-04-23T09:51:16+09:00
Subject: Re: Reading empty File

Hi All
Philipp Taprogge wrote:
> Hi!
> 
> Thus spake Bino Oetomo on 04/21/2007 07:14 AM:
>> Question : How to tell ruby to go to next command if only the file is
>> not empty.
> 
> You have two options: either you rescue the EOFError and deal with
> it programmatically, or you just use IO.gets instead of IO.readline,
> which will not raise an error but return 'nil' if the EOF is reached.
> 
> HTH,
> 
>   Phil

I tried it with irb, here is the cut
-----------Start--------------
[root@kannel root]# rm /mnt/ramdisk0/js01
rm: remove regular empty file `/mnt/ramdisk0/js01'? y
[root@kannel root]# touch /mnt/ramdisk0/js01
[root@kannel root]# irb
irb(main):001:0> File.open("/mnt/ramdisk0/js01", "r+") do |f|
irb(main):002:1*     f.each_line { |line|
irb(main):003:2* puts line
irb(main):004:2> f.close}
irb(main):005:1>     rescue EOFError
irb(main):006:1> f.close
irb(main):007:1> end
SyntaxError: compile error
(irb):5: parse error, unexpected kRESCUE, expecting kEND
    rescue EOFError
          ^
        from (irb):7
        from :0
----------end-----------------


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