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perl recursive descent parser module
This is also a module which was written as part of a larger project .
Comments :This module inturn uses the Recursive Descent Parser Module functionality. Altavista or major search engine syntax is followed and Users will be allowed to create query strings using Boolean connectors:
AND , OR , AND NOT , OR NOT , NOT
In addition, users will be allowed to group queries using parentheses, e.g.:
hello AND NOT (goodbye OR greeting)
Example usage of the module
$pageLength = 40;
$page = 0;
$searchString = "hello OR goodbye";
$itemOnPage = 13;
$module = KeywordSearch -> New ($pageLength);
$module -> search ($searchString,$page);
($level,$levelID,$text) = $module -> get ($itemOnPage);
perl regex regular expression parsing capability is put to full use here.Couldnt find time to upload to CPAN the perl module repository
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