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.\" ========================================================================
.\"
.IX Title "WWW::Search::Yahoo 3pm"
.TH WWW::Search::Yahoo 3pm "2018-11-25" "perl v5.28.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
WWW::Search::Yahoo \- backend for searching www.yahoo.com
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 6
\&  use WWW::Search;
\&  my $oSearch = new WWW::Search(\*(AqYahoo\*(Aq);
\&  my $sQuery = WWW::Search::escape_query("sushi restaurant Columbus Ohio");
\&  $oSearch\->native_query($sQuery);
\&  while (my $oResult = $oSearch\->next_result())
\&    print $oResult\->url, "\en";
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This class is a Yahoo specialization of WWW::Search.  It handles
making and interpreting Yahoo searches \fIhttp://www.yahoo.com\fR.
.PP
This class exports no public interface; all interaction should
be done through WWW::Search objects.
.SH "NOTES"
.IX Header "NOTES"
The default search is: Yahoo's web-based index (not Directory).
.SH "PRIVATE METHODS"
.IX Header "PRIVATE METHODS"
If you just want to write Perl code to search Yahoo,
you do \s-1NOT\s0 need to read any further here.
Instead, just read the WWW::Search documentation.
.PP
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:
.SS "gui_query"
.IX Subsection "gui_query"
Yes, Virginia, we do try to emulate stupid-human queries.
.SS "need_to_delay"
.IX Subsection "need_to_delay"
This method tells the WWW::Search controller code whether we need to
pause and give the yahoo.com servers a breather.
.SS "user_agent_delay"
.IX Subsection "user_agent_delay"
This method tells the WWW::Search controller code how many seconds we should pause.
.SS "preprocess_results_page"
.IX Subsection "preprocess_results_page"
Clean up the Yahoo \s-1HTML\s0 before we attempt to parse it.
.SS "_result_list_tags"
.IX Subsection "_result_list_tags"
Returns a list,
which will be passed as arguments to \fBHTML::Element::look_down()\fR
in order to return a list of HTML::Element which contain the query results.
.SS "_result_list_items"
.IX Subsection "_result_list_items"
Given an HTML::TreeBuilder tree,
returns a list of HTML::Element,
which contain the query results.
.SS "parse_details"
.IX Subsection "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.
.SS "_where_to_find_count"
.IX Subsection "_where_to_find_count"
Returns a list,
which will be passed as arguments to \fBHTML::Element::look_down()\fR
in order to return an HTML::Element
which contains the approximate result count.
.SS "_string_has_count"
.IX Subsection "_string_has_count"
Given a string,
returns the approximate result count
if that string contains the approximate result count.
.SS "_a_is_next_link"
.IX Subsection "_a_is_next_link"
Given an HTML::Element,
returns true if it seems to contain the clickable \*(L"next page\*(R" widget.
.SS "strip"
.IX Subsection "strip"
Given a string,
strips leading and trailing whitespace off of it.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
To make new back-ends, see WWW::Search.
.SH "BUGS"
.IX Header "BUGS"
Please tell the maintainer if you find any!
.SH "AUTHOR"
.IX Header "AUTHOR"
As of 1998\-02\-02, \f(CW\*(C`WWW::Search::Yahoo\*(C'\fR is maintained by Martin Thurn
(mthurn@cpan.org).
.PP
\&\f(CW\*(C`WWW::Search::Yahoo\*(C'\fR was originally written by Wm. L. Scheding,
based on \f(CW\*(C`WWW::Search::AltaVista\*(C'\fR.
.SH "LEGALESE"
.IX Header "LEGALESE"
\&\s-1THIS SOFTWARE IS PROVIDED \*(L"AS IS\*(R" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.\s0
.SH "LICENSE"
.IX Header "LICENSE"
Copyright (C) 1998\-2009 Martin 'Kingpin' Thurn
.PP
This software is released under the same license as Perl itself.