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.