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Re: Regex checking text is made up of the keys of a hash.

by blakem (Monsignor)
on Mar 01, 2003 at 03:04 UTC ( #239627=note: print w/replies, xml ) Need Help??


in reply to Regex checking text is made up of the keys of a hash.

It might not really be what you want, but I believe it fits the specs:
#!/usr/bin/perl -wT use strict; my %validLanguages = ( "de" => "german", "en" => "english", "es" => "spanish", "fr" => "french", "it" => "italian", "ja" => "japanise", "ko" => "korean", "ru" => "russian", "sv" => "WHATS THIS", "zh" => "WHATS THIS", "zh_TW" => "WHATS THIS" ); # test it for ('dog','cat','de,en',' ',',,,','deensvzh') { printf "%-10s %s a list of languages\n", "'$_'", (isItJustAListOfLanguages($_) ? "is" : "is NOT"); } sub isItJustAListOfLanguages{ my $text = shift; my @tokens = (keys %validLanguages, '\s',','); my $tokenpatt = join('|',@tokens); return $text =~ /^($tokenpatt)+$/; } __END__ 'dog' is NOT a list of languages 'cat' is NOT a list of languages 'de,en' is a list of languages ' ' is a list of languages ',,,' is a list of languages 'deensvzh' is a list of languages

-Blake

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Re: Re: Regex checking text is made up of the keys of a hash.
by heezy (Monk) on Mar 01, 2003 at 23:04 UTC

    This is so cool, it works so well and it's only 4 lines!

    thanks a lot!

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