From: "Mauricio Fernández" <batsman.geo@...>
Date: 2003-04-03T02:34:44+09:00
Subject: Re: eval'ing a config file

On Wed, Apr 02, 2003 at 02:15:15AM +0900, Ian Macdonald wrote:
> Hi,
> 
> I have a number of LDAP-related programs that I want to share a common
> config file in which certain variables are stored, such as server, port,
> password, etc. in the following form.
> 
> LDAP_HOST = foo.bar.com
> LDAP_PORT = 389
> LDAP_PASS = foobar
> 
> I want the parser to ignore blank lines and those that start with a '#'.
> 
> The code that I've come up with is this:
> 
> File.open("/etc/ldaprc") do |f|
>   f.each do |line|
>     next if line =~ /^(#|$)/ 
>     var, val = /^(.+?)\s*=\s*(.+)$/.match(line)[1,2]
>     eval "#{var} = '#{val}'"
>   end
> end
> 
> It works, but looking at it, it looks too much like code I might have
> written for Perl some years ago. Is there a more Rubyesque way to do
> this? In particular, is there a cleaner way than eval?

Just for the eval part (IMHO the whole problem would be handled better
by some module in the RAA ;-):

>> Object.const_set("AA", 12)
=> 12
>> AA
=> 12

-- 
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| |__   __ _| |_ ___ _ __ ___   __ _ _ __  
| '_ \ / _` | __/ __| '_ ` _ \ / _` | '_ \ 
| |_) | (_| | |_\__ \ | | | | | (_| | | | |
|_.__/ \__,_|\__|___/_| |_| |_|\__,_|_| |_|
	Running Debian GNU/Linux Sid (unstable)
batsman dot geo at yahoo dot com

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