From: Logan Capaldo <logancapaldo@...>
Date: 2006-08-12T22:45:41+09:00
Subject: Re: gets give me last arg of script ???


On Aug 12, 2006, at 6:15 AM, Une b�vue wrote:

>
> something i don't understand : gets give me last arg of script ???
>
> here is part of my script :
>
> ---------------------------------------------------------------------- 
> --
> def get_respons
>   return (/^[y|Y|O|o].*/ === gets.to_s.chomp)
> end
>
> dir_path=Dir.pwd
> dir_path=$*[0] if $*.length == 1
> puts "Are you sure you want to convert #{dir_path} ?[y|Y|O|o/n]  
> default
> to NO"
> if get_respons
>   puts "reponse YES"
> end
> ---------------------------------------------------------------------- 
> --
>
> and the script (being in my $PATH) is called from terminal :
>>  set_date /Users/yvon
>
> and the message error i get is :
>> set_date /Users/yvon
> Are you sure you want to convert /Users/yvon ?[y|Y|O|o/n] default  
> to NO
> nil
> /Users/yvon/bin/set_date:7:in `gets': Is a directory - /Users/yvon
> (Errno::EISDIR)
>         from /Users/yvon/bin/set_date:7:in `get_reponse'
>         from /Users/yvon/bin/set_date:17
>
> line 7 being "return (/^[y|Y|O|o].*/ === gets.to_s.chomp)"
> and 17 the call to "get_respons" : "if get_respons"
>
> notice the $*[0] is allready used in my script ???
> -- 
> une b�vue
>

Kernel#gets (what you get when you just use gets) calls ARGF.gets.  
ARGF is a magic IO object that lets your script have a cli api  
similar to apps like 'cat'. You can check the docs for details, but  
basically what you want to use is $stdin.gets or STDIN.gets not plain  
old gets