8 |
use Carp qw/verbose/; |
use Carp qw/verbose/; |
9 |
use Module::Pluggable search_path => 'Grep::Source', sub_name => 'sources', require => 1; |
use Module::Pluggable search_path => 'Grep::Source', sub_name => 'sources', require => 1; |
10 |
use base qw(Class::Accessor Jifty::Object); |
use base qw(Class::Accessor Jifty::Object); |
11 |
Grep::Source->mk_accessors( qw(feed uri q new_items collection) ); |
Grep::Source->mk_accessors( qw(feed uri q new_items collection search_obj tree) ); |
12 |
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|
13 |
use HTML::TreeBuilder; |
use HTML::TreeBuilder; |
14 |
use WWW::Mechanize; |
use WWW::Mechanize; |
108 |
my $class = $self->feed->source || 'Grep::Source::Feed'; |
my $class = $self->feed->source || 'Grep::Source::Feed'; |
109 |
$self->log->debug("using $class"); |
$self->log->debug("using $class"); |
110 |
|
|
111 |
my $parent = $self; |
$self->search_obj( Grep::Search->new() ); |
112 |
$class->fetch( $parent ); |
$self->log->debug("created " . $self->search_obj); |
|
undef $parent; |
|
113 |
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114 |
Grep::Search->finish if $self->new_items; |
$class->fetch( $self ); |
115 |
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116 |
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$self->search_obj->finish; |
117 |
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118 |
return $self->collection; |
return $self->collection; |
119 |
} |
} |
132 |
sub add_record { |
sub add_record { |
133 |
my $self = shift; |
my $self = shift; |
134 |
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135 |
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$self->log->confess("no search_obj") unless ($self->search_obj); |
136 |
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137 |
my $i = Grep::Model::Item->new(); |
my $i = Grep::Model::Item->new(); |
138 |
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139 |
my $rec = {@_}; |
my $rec = {@_}; |
140 |
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141 |
warn "resolving links"; |
$self->log->debug("resolving links using base ", $rec->{link}); |
142 |
my $resolver = HTML::ResolveLink->new( base => $rec->{link} ); |
my $resolver = HTML::ResolveLink->new( base => $rec->{link} ); |
143 |
$rec->{content} = $resolver->resolve( $rec->{content} ); |
$rec->{content} = $resolver->resolve( $rec->{content} ); |
144 |
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152 |
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153 |
# is new record? |
# is new record? |
154 |
if ( $msg !~ m/^Found/ ) { |
if ( $msg !~ m/^Found/ ) { |
155 |
Grep::Search->add( $i ); |
$self->search_obj->add( $i ); |
156 |
$self->new_items( ( $self->new_items || 0 ) + 1 ); |
$self->new_items( ( $self->new_items || 0 ) + 1 ); |
157 |
} |
} |
158 |
} else { |
} else { |
195 |
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196 |
=cut |
=cut |
197 |
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198 |
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sub element_by_triplet { |
199 |
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my $self = shift; |
200 |
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201 |
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my $args = {@_}; |
202 |
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203 |
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my $tree = $args->{tree} || die "no tree"; |
204 |
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my $message = $args->{message} || ''; |
205 |
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my $fatal = $args->{fatal}; |
206 |
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die "no templates" unless defined( $args->{templates} ); |
207 |
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my @templates; |
208 |
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if ( ref( $args->{template} ) eq 'ARRAY' ) { |
209 |
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@templates = @{ $args->{templates} }; |
210 |
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} else { |
211 |
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@templates = ( $args->{templates} ); |
212 |
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} |
213 |
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214 |
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push @templates, ( undef, undef ) if ( $#templates == 0 ); |
215 |
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216 |
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die "wrapper doesn't have 3 elements but ", $#templates unless ( |
217 |
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( $#templates + 1 ) % 3 == 0 |
218 |
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); |
219 |
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220 |
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my ( $el, $attr, $value ); |
221 |
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222 |
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my @results; |
223 |
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my @tags; |
224 |
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225 |
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while ( @templates ) { |
226 |
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( $el,$attr,$value ) = splice( @templates, 0, 3 ); |
227 |
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my $tag = $attr ? "<$el $attr=\"$value\">" : "<$el>"; |
228 |
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push @tags, $tag; |
229 |
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$self->log->debug("looking for $message $tag"); |
230 |
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@results = $tree->look_down( '_tag', $el, sub { |
231 |
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return 1 unless ( $attr && $value ); |
232 |
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( $_[0]->attr( $attr ) || '' ) eq $value; |
233 |
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}); |
234 |
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last if @results; |
235 |
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} |
236 |
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237 |
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if ( ! @results ) { |
238 |
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my $msg = "can't find $message ", join(" ", @tags); |
239 |
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die $msg if ( $fatal ); |
240 |
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warn $msg; |
241 |
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return; |
242 |
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} |
243 |
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244 |
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$self->log->debug("found ", $#results + 1, " results"); |
245 |
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246 |
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return @results if wantarray; |
247 |
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return shift @results; |
248 |
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} |
249 |
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|
250 |
sub scrape { |
sub scrape { |
251 |
my $self = shift; |
my $self = shift; |
252 |
|
|
253 |
my $args = {@_}; |
my $args = {@_}; |
254 |
|
|
255 |
warn "scrape got args ",dump($args); |
$self->log->debug("scrape with args ",dump($args)); |
256 |
|
|
257 |
my ($feed,$uri,$q) = ($self->feed, $self->uri,$self->q); |
my ($feed,$uri,$q) = ($self->feed, $self->uri,$self->q); |
258 |
die "no uri" unless ($uri); |
die "no uri" unless ($uri); |
274 |
$self->save( 'get.html', $mech->content ); |
$self->save( 'get.html', $mech->content ); |
275 |
|
|
276 |
if ( my $form = $args->{submit_form} ) { |
if ( my $form = $args->{submit_form} ) { |
277 |
warn "submit form on $uri with ", dump( $form ),"\n"; |
$self->log->debug("submit form on $uri with ", dump( $form )); |
278 |
$mech->submit_form( %$form ) or die "can't submit form ", dump( $form ); |
$mech->submit_form( %$form ) or die "can't submit form ", dump( $form ); |
279 |
$self->save( 'submit.html', $mech->content ); |
$self->save( 'submit.html', $mech->content ); |
280 |
} |
} |
281 |
|
|
282 |
warn "parse result page\n"; |
$self->log->debug("parse result page"); |
283 |
|
|
284 |
my $tree = HTML::TreeBuilder->new or die "can't create html tree"; |
my $tree = HTML::TreeBuilder->new or die "can't create html tree"; |
285 |
$tree->parse( $mech->content ) or die "can't parse fetched content"; |
$tree->parse( $mech->content ) or die "can't parse fetched content"; |
286 |
|
|
287 |
die "wrapper doesn't have 3 elements but ", $#{ $args->{wrapper} } unless ( $#{ $args->{wrapper} } == 2 ); |
my $div = $self->element_by_triplet( |
288 |
my ( $el,$attr,$value ) = @{ $args->{wrapper} }; |
tree => $tree, |
289 |
|
templates => $args->{wrapper}, |
290 |
warn "looking for <$el $attr=\"$value\">"; |
message => 'wrapper for all results', |
291 |
|
fatal => 1 |
292 |
my $div = $tree->look_down( '_tag', $el, sub { |
); |
|
warn dump( $_[0]->attr( $attr ) ),$/; |
|
|
( $_[0]->attr( $attr ) || '' ) eq $value; |
|
|
}); |
|
|
|
|
|
if ( ! $div ) { |
|
|
warn "can't find results wrapper <$el $attr=\"$value\">"; |
|
|
return; |
|
|
} |
|
293 |
|
|
294 |
my $max = 5; |
my $max = 15; |
295 |
my $nr = 1; |
my $nr = 1; |
296 |
|
|
297 |
my $base_uri = $uri; |
my $base_uri = $uri; |
298 |
$base_uri =~ s!\?.*$!!; |
$base_uri =~ s!\?.*$!!; |
299 |
|
|
300 |
foreach my $dt ( $div->look_down( '_tag', $args->{results} ) ) { |
my @r = $self->element_by_triplet( |
301 |
|
tree => $tree, |
302 |
|
templates => $args->{results}, |
303 |
|
message => 'result element', |
304 |
|
); |
305 |
|
|
306 |
|
foreach my $dt ( @r ) { |
307 |
my $a = $dt->look_down( '_tag', 'a', sub { $_[0]->attr('href') } ); |
my $a = $dt->look_down( '_tag', 'a', sub { $_[0]->attr('href') } ); |
308 |
if ( $a ) { |
if ( $a ) { |
309 |
|
|
312 |
$page_uri->query( undef ); |
$page_uri->query( undef ); |
313 |
$page_uri = $page_uri->canonical; |
$page_uri = $page_uri->canonical; |
314 |
|
|
315 |
warn "fetching page: ",$a->as_text," from $page_uri\n"; |
$self->log->debug("fetching page: ",$a->as_text," from $page_uri"); |
316 |
if ( $mech->follow_link( url => $a->attr('href') ) ) { |
if ( $mech->follow_link( url => $a->attr('href') ) ) { |
317 |
|
|
318 |
$self->save( "page-${nr}.html", $mech->content ); |
$self->save( "page-${nr}.html", $mech->content ); |
319 |
|
|
320 |
my $page_tree = HTML::TreeBuilder->new or die "can't create page tree"; |
my $page_tree = HTML::TreeBuilder->new or die "can't create page tree"; |
321 |
$page_tree->parse( $mech->content ) or die "can't parse page at $page_uri"; |
$page_tree->parse( $mech->content ) or die "can't parse page at $page_uri"; |
322 |
|
$div = $self->element_by_triplet( |
323 |
( $el,$attr,$value ) = @{ $args->{scrape} }; |
tree => $page_tree, |
324 |
$div = $page_tree->look_down( '_tag', $el, sub { ( $_[0]->attr( $attr ) || '' ) eq $value } ); |
message => "result $nr", |
325 |
|
templates => $args->{scrape} |
326 |
die "can't find <$el $attr=\"$value\">" unless ($div); |
); |
327 |
|
|
328 |
$self->add_record( |
$self->add_record( |
329 |
in_feed => $feed, |
in_feed => $feed, |
335 |
# author => |
# author => |
336 |
# issued => |
# issued => |
337 |
# modified => |
# modified => |
338 |
); |
) if ( $div ); |
339 |
|
|
340 |
$mech->back; |
$mech->back; |
341 |
$page_tree->delete; |
$page_tree->delete; |
343 |
} else { |
} else { |
344 |
warn "can't follow uri $page_uri: $!\n"; |
warn "can't follow uri $page_uri: $!\n"; |
345 |
} |
} |
346 |
|
} else { |
347 |
|
$self->log->debug("result $nr doesn't have link inside, ignoring..."); |
348 |
} |
} |
349 |
|
|
350 |
last if ($nr == $max); |
last if ($nr == $max); |