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Re: Regular Expression Builder

by tommyw (Hermit)
on Aug 30, 2002 at 15:36 UTC ( #194145=note: print w/replies, xml ) Need Help??


in reply to Regular Expression Builder

Programming Perl includes:

#!/usr/bin/perl $vowels='aeiouy'; $cons='bcdfghjklmnpqrstvwxzy'; %map={C=>$cons, V=>$vowels; for $class=($vowels, $cons) { for (split //, $class) { map{$_}.=$class; } } for $char (split //, shift) { $pat.="[$map{$char}]"; } $re=qr/^${pat}$/i; print "REGEX is $re\n"; @ARGV='/usr/dict/words' if -t && !@ARGV; while (<>) { print if /$re/; }
Which takes a word, and builds a template from it with the same pattern of vowels and consonants. Although the original is commented. Extending this to handle digits should be easy. The cunning part will be collapsing the multiple character classes down, and using a multiple instead.

This is, of course, left as an exercise for the reader ;-)

--
Tommy
Too stupid to live.
Too stubborn to die.

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[MidLifeXis]: Where is it hanging up?
[MidLifeXis]: ISTR having a couple of issue based on undeclared dependencies around the time I was looking at that module on my last project, but cannot say if that was the module that I had the dependency issues with.
[MidLifeXis]: (5.22 at that time)
[MidLifeXis]: Yeah, I know, really helpful :-)
[Corion]: If all else fails, Spreadsheet::XLSX should be "installable" by manually copying the files, provided that the prerequisites are met
[thezip]: It fails in the "formatted 2-digit numeric" tests
[thezip]: Okay Corion, that's what I wanted to hear. Thanks!
[Corion]: Oh, a test failure... Just force-install it then? --force and potentially --notest to skip the tests alltogether ?
[ambrus]: thezip: is Activestate Perl usable for your scenario instead?
[MidLifeXis]: Yeah, --notest is good, not sure I would do --force.

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