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package Text::Decorator::Filter::URIFind; |
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use strict; |
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use base 'Text::Decorator::Filter'; |
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use Carp; |
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use Text::Decorator::Group; |
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use Text::Decorator::Node; |
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=head1 NAME |
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Text::Decorator::Filter::URIFind - Turn URLs into links |
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=head1 DESCRIPTION |
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=head2 filter_node |
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This filter uses the L module to mark up URLs as links. |
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You can also pass a classname as an argument to this filter, if you |
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prefer using C or whatever. |
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=cut |
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sub filter_node { |
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my ($class, $args, $node) = @_; |
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my $urifind = shift(@$args) || "URI::Find"; |
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$urifind->require or croak "Couldn't load $urifind"; |
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my $uriRe = sprintf '(?:%s|%s)', $urifind->uri_re, |
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$urifind->schemeless_uri_re; |
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my $orig = $node->format_as("html"); |
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return $node unless $orig =~ /$uriRe/; |
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my $group = Text::Decorator::Group->new(); |
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$group->{representations}{text}{pre} = $node->format_as("text"); |
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$group->{representations}{html}{pre} = ""; |
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$group->{representations}{text}{post} = ""; |
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$urifind = $urifind->new(sub {}); |
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while ($orig =~ s{(.*?)(<$uriRe>|$uriRe)}{}sm) { |
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my $orig_match = $urifind->decruft($2); |
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$class->_add_text_node($group, $1 . $urifind->{start_cruft}); |
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if (my $uri = $urifind->_is_uri(\$orig_match)) { # Its a URI. |
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$class->_add_uri_group($group, $uri, $orig_match); |
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} else { # False alarm. |
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$class->_add_text_node($group, $orig_match); |
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} |
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$class->_add_text_node($group, $urifind->{end_cruft}) |
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if $urifind->{end_cruft}; |
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} |
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$class->_add_text_node($group, $orig); |
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return $group; |
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} |
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sub _add_text_node { |
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my ($class, $group, $text) = @_; |
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my $node = Text::Decorator::Node->new(""); |
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# Text representation is provided by group |
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$node->{representations}{html} = $text; |
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push @{ $group->{nodes} }, $node; |
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} |
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sub _add_uri_group { |
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my ($class, $group, $uri, $text) = @_; |
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my $node = Text::Decorator::Node->new(""); |
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$node->{representations}{html} = $text; |
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my $subgroup = Text::Decorator::Group->new($node); |
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$subgroup->{representations}{html}{pre} = ""; |
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$subgroup->{representations}{html}{post} = ""; |
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push @{ $group->{nodes} }, $subgroup; |
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} |
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1; |