NAME

       WWW::Search::Yahoo - backend for searching www.yahoo.com

SYNOPSIS

         use WWW::Search;
         my $oSearch = new WWW::Search('Yahoo');
         my $sQuery = WWW::Search::escape_query("sushi restaurant Columbus Ohio");
         $oSearch->native_query($sQuery);
         while (my $oResult = $oSearch->next_result())
           print $oResult->url, "\n";

DESCRIPTION

       This class is a Yahoo specialization of WWW::Search.  It handles making and interpreting
       Yahoo searches http://www.yahoo.com.

       This class exports no public interface; all interaction should be done through WWW::Search
       objects.

NOTES

       The default search is: Yahoo's web-based index (not Directory).

PRIVATE METHODS

       If you just want to write Perl code to search Yahoo, you do NOT need to read any further
       here.  Instead, just read the WWW::Search documentation.

       If you want to write a subclass of this module (e.g. create a backend for another branch
       of Yahoo) then please read about the private methods here:

   gui_query
       Yes, Virginia, we do try to emulate stupid-human queries.

   need_to_delay
       This method tells the WWW::Search controller code whether we need to pause and give the
       yahoo.com servers a breather.

   user_agent_delay
       This method tells the WWW::Search controller code how many seconds we should pause.

   preprocess_results_page
       Clean up the Yahoo HTML before we attempt to parse it.

   _result_list_tags
       Returns a list, which will be passed as arguments to HTML::Element::look_down() in order
       to return a list of HTML::Element which contain the query results.

   _result_list_items
       Given an HTML::TreeBuilder tree, returns a list of HTML::Element, which contain the query
       results.

   parse_details
       Given a (portion of an) HTML::TreeBuilder tree and a WWW::SearchResult object, parses one
       result out of the tree and populates the SearchResult.

   _where_to_find_count
       Returns a list, which will be passed as arguments to HTML::Element::look_down() in order
       to return an HTML::Element which contains the approximate result count.

   _string_has_count
       Given a string, returns the approximate result count if that string contains the
       approximate result count.

   _a_is_next_link
       Given an HTML::Element, returns true if it seems to contain the clickable "next page"
       widget.

   strip
       Given a string, strips leading and trailing whitespace off of it.

SEE ALSO

       To make new back-ends, see WWW::Search.

BUGS

       Please tell the maintainer if you find any!

AUTHOR

       As of 1998-02-02, "WWW::Search::Yahoo" is maintained by Martin Thurn (mthurn@cpan.org).

       "WWW::Search::Yahoo" was originally written by Wm. L. Scheding, based on
       "WWW::Search::AltaVista".

LEGALESE

       THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
       INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
       PARTICULAR PURPOSE.

LICENSE

       Copyright (C) 1998-2009 Martin 'Kingpin' Thurn

       This software is released under the same license as Perl itself.