WWW::Search::Yahoo (3)

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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 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 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 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

LICENSE

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

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