regexp: really tired, guru help needed... Post: 302474094

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Top Forums Shell Programming and Scripting regexp: really tired, guru help needed... Post 302474094 by bakunin on Tuesday 23rd of November 2010 09:07:01 AM

11-23-2010

Registered User

I suppose your problem are some unescaped grouping constructs:

Your regex:

Code:

"/\"http:\/\/ccc\.bbb\.com\/documents\/0000\/[0-9]{4}\/([^\.]+\.[a-z]{3})[^\"] \"/

probably correct:

Code:

"/\"http:\/\/ccc\.bbb\.com\/documents\/0000\/[0-9]\{4\}\/\([^\.]+\.[a-z]\{3\}\)[^\"] \"/

If you want to repeat the previous regex part several times you have to use "regex\{<n>\}", not "regex{<n>}" and grouping has to be done with "\(<regex>\)", not "(<regex>)".

Furthermore, the "+" is not part of POSIX regexps, but some (usually GNU/Linux-) utilities understand it as "one or more", similar to "*" meaning "zero or more". I am not entirely sure how you meant it, but you would be probably better off making this clear by either escaping the "+" our using "<regex><regex>*" instead of "<regex>+" if you want to match one or more instances of <regex>.

I hope this helps.

bakunin

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ppi::token::regexp::match

PPI::Token::Regexp::Match(3)				User Contributed Perl Documentation			      PPI::Token::Regexp::Match(3)

NAME

       PPI::Token::Regexp::Match - A standard pattern match regex

INHERITANCE

	 PPI::Token::Regexp::Match
	 isa PPI::Token::Regexp
	     isa PPI::Token
		 isa PPI::Element

SYNOPSIS

	 $text =~ m/match regexp/;
	 $text =~ /match regexp/;

DESCRIPTION

       A "PPI::Token::Regexp::Match" object represents a single match regular expression. Just to be doubly clear, here are things that are and
       aren't considered a match regexp.

	 # Is a match regexp
	 /This is a match regexp/;
	 m/Old McDonald had a farm/eieio;

	 # These are NOT match regexp
	 qr/This is a regexp quote-like operator/;
	 s/This is a/replace regexp/;

METHODS

       There are no methods available for "PPI::Token::Regexp::Match" beyond those provided by the parent PPI::Token::Regexp, PPI::Token and
       PPI::Element classes.

       Got any ideas for methods? Submit a report to rt.cpan.org!

SUPPORT

       See the support section in the main module.

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2001 - 2011 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.16.2							    2011-02-25					      PPI::Token::Regexp::Match(3)