From: "Rebhan, Gilbert" <Gilbert.Rebhan@...>
Date: 2007-02-23T17:59:55+09:00
Subject: Re: File.open with line =~ /.../

 
Hi,

-----Original Message-----
From: Robert Klemme [mailto:shortcutter@googlemail.com] 
Sent: Friday, February 23, 2007 9:15 AM
To: ruby-talk ML
Subject: Re: File.open with line =~ /.../

On 23.02.2007 08:36, Rebhan, Gilbert wrote:
> Hi,
> 
> i have a txtfile like that =
> 
> bla1
> foo=red
> 
> bla2
> foo=green
> 
> bla3
> foo=yellow
> 
> and i want to get i.e. bla1 and the corresponding value of foo
> 
> i tried with 
> 
> File.open("Y:/test/sample.txt", "r").each do |line|
>   puts $1<<' : '<< $3 if line =~ /(\w+)\s+(\w+=)(\w+)/
> end
> 
> but somehow the regex doesn't work ?!
> whereas it works in the QuickRex Plugin for Eclipse
> 
> Any ideas ?

/*
If this is really the case I'd say the QuickRex Plugin is broken or you 
feed different files.  Since you match for a non zero number of white 
space characters before the equal sign, it should not match, since there

is none in the file contents you showed.  You could change to \s* or 
leave it out completely.
*/

hmm, the QuickRex Plugin can evaluate with the Regular Expression
Implementation for =

Java
Jakarta Oro Perl 5
Jakarta Oro Awk
JRegex


the regex
(\w+)\r\n(\w+=)(\w+) works in all implementations except the Awk
also the regex (\w+)\s+(\w+=)(\w+) works for all except the Awk
implementation

so i get = $1 > bla1 $2 >foo $3 > red with both regex

Did only simple regex operations on one line in ruby until now.
What's wrong with my regex ?

Regards, Gilbert