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{ |
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=head1 NAME |
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XML::Filter::XML_Directory_2RSS::Base - base class for XML::Filter::XML_Directory_2RSS |
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=head1 SYNOPSIS |
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package XML::Filter::XML_Directory_2RSS |
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use base qw (XML::Filter::XML_Directory_2RSS::Base); |
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=head1 DESCRIPTION |
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Base class for XML::Filter::XML_Directory_2RSS and XML::Filter::XML_Directory_2RSS::Items |
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This is used internally by XML::Filter::XML_Directory_2RSS. |
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=cut |
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package XML::Filter::XML_Directory_2RSS::Base; |
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use strict; |
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$XML::Filter::XML_Directory_2RSS::Base::VERSION = 0.9.1; |
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use Carp; |
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use base qw (XML::Filter::XML_Directory_Pruner); |
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1
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use constant DEFAULT_NS => ( "","rdf","dc","thr" ); |
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use constant NS => { |
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"" => "http://purl.org/rss/1.0/", |
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"admin" => "http://webns.net/mvcb/", |
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"dc" => "http://purl.org/dc/elements/1.1/", |
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"rdf" => "http://www.w3.org/1999/02/22-rdf-syntax-ns#", |
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"sy" => "http://purl.org/rss/1.0/modules/syndication/", |
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"ti" => "http://purl.org/rss/1.0/modules/textinput/", |
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"thr" => "http://purl.org/rss/1.0/modules/threading/", |
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}; |
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sub start_default_namespaces { |
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my $self = shift; |
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foreach my $prefix (DEFAULT_NS) { |
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$self->SUPER::start_prefix_mapping({ |
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Prefix => $prefix, |
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NamespaceURI => NS->{$prefix}, |
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}); |
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} |
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return 1; |
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} |
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53
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sub end_default_namespaces { |
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0
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0
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my $self = shift; |
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0
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foreach my $prefix (DEFAULT_NS) { |
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0
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$self->SUPER::end_prefix_mapping({Prefix => $prefix}); |
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} |
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59
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0
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return 1; |
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} |
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62
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sub handlers { |
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0
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my $self = shift; |
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0
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my $args = shift; |
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66
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0
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0
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if (ref($args) ne "HASH") { |
67
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0
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return undef; |
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} |
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70
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0
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foreach ("title","description") { |
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0
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next if (! $args->{$_}); |
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73
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0
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0
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if (! UNIVERSAL::isa($args->{$_},"XML::SAX::Base")) { |
74
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0
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carp "Handler must be derived from XML::SAX::Base"; |
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0
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next; |
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} |
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78
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0
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0
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if (! UNIVERSAL::can($args->{$_},"parse_uri")) { |
79
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0
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carp "Handler must define a 'parse_uri' method.\n"; |
80
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0
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next; |
81
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} |
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83
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0
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$self->{'__handlers'}{$_} = $args->{$_}; |
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} |
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86
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0
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return 1; |
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} |
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89
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sub callbacks { |
90
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0
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0
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0
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my $self = shift; |
91
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0
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my $args = shift; |
92
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93
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0
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0
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if (ref($args) ne "HASH") { |
94
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0
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return undef; |
95
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} |
96
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97
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0
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foreach ("title","link","description") { |
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0
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0
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next if (! $args->{$_}); |
99
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100
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0
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0
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if (ref($args->{$_}) ne "CODE") { |
101
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0
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carp "Not a CODE reference"; |
102
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0
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return undef; |
103
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} |
104
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105
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0
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$self->{'__callbacks'}{$_} = $args->{$_}; |
106
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} |
107
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108
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0
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return 1; |
109
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} |
110
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111
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sub on_enter_start_element { |
112
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0
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0
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0
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my $self = shift; |
113
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0
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my $data = shift; |
114
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115
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0
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$self->{'__rlevel'} ++; |
116
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0
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$self->{'__last'} = $data->{Name}; |
117
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118
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0
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0
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if ($data->{Name} eq "head") { |
119
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0
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$self->{'__head'} = 1; |
120
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} |
121
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122
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0
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0
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0
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if (($self->{'__head'}) && ($data->{Name} eq "orderby")) { |
123
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0
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$self->{'__orderby'} = $data->{'Attributes'}->{'{}code'}->{'Value'}; |
124
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} |
125
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126
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0
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0
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0
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if ((! $self->{'__start'}) && ($data->{Name} eq "directory")) { |
127
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0
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$self->{'__start'} = $self->{'__rlevel'}; |
128
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0
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return; |
129
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} |
130
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131
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0
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0
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return unless $self->{'__start'}; |
132
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133
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0
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0
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0
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if (($data->{'Name'} =~ /^(file|directory)$/) && (! $self->{'__skip'})) { |
134
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135
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0
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$self->{'__wasa'} = $self->{'__ima'}; |
136
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0
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$self->{'__wasa_level'} = $self->{'__ima_level'}; |
137
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138
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0
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$self->{'__ima'} = $1; |
139
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0
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$self->{'__ima_level'} = $self->{'__rlevel'}; |
140
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0
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$self->_compare($data->{Attributes}->{'{}name'}->{Value}); |
141
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} |
142
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143
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0
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0
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if ($self->{'__skip'}) { |
144
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0
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return 0; |
145
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} |
146
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147
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0
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$self->grow_cwd($data); |
148
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149
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0
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return 1; |
150
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} |
151
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152
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sub on_enter_end_element { |
153
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0
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0
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0
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my $self = shift; |
154
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0
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my $data = shift; |
155
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156
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0
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0
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if ($data->{Name} eq "head") { |
157
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0
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$self->{'__head'} = 0; |
158
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} |
159
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160
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0
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return 1; |
161
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} |
162
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163
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sub on_exit_end_element { |
164
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0
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0
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0
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my $self = shift; |
165
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0
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my $data = shift; |
166
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167
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0
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0
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if ($self->{'__skip'} == $self->{'__rlevel'}) { |
168
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0
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$self->{'__skip'} = 0; |
169
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} |
170
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171
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0
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$self->{'__rlevel'} --; |
172
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0
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return 1; |
173
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} |
174
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175
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sub on_characters { |
176
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0
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0
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0
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my $self = shift; |
177
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0
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my $data = shift; |
178
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179
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0
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0
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if ($self->{'__head'}) { |
180
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0
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$self->{ '__'.$self->{'__last'} } = $data->{Data}; |
181
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} |
182
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183
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0
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return 1; |
184
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} |
185
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186
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sub grow_cwd { |
187
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0
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0
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0
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my $self = shift; |
188
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0
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my $data = shift; |
189
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190
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0
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0
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if ($data->{Name} eq "directory") { |
191
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0
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|
$self->{'__cwd'} .= "/$data->{Attributes}->{'{}name'}->{Value}"; |
192
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} |
193
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194
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0
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return 1; |
195
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} |
196
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197
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sub prune_cwd { |
198
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0
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0
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0
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|
my $self = shift; |
199
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0
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my $data = shift; |
200
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|
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201
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0
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0
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|
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if ($data->{Name} eq "directory") { |
202
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0
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|
$self->{'__cwd'} =~ s/^(.*)\/([^\/]+)$/$1/; |
203
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|
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} |
204
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205
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0
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return 1; |
206
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} |
207
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208
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sub build_uri { |
209
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0
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0
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0
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|
my $self = shift; |
210
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0
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my $data = shift; |
211
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212
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0
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my $uri = $self->{'__path'}.$self->{'__cwd'}; |
213
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214
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0
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0
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|
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if ($data->{Name} eq "file") { |
215
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0
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|
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|
$uri .= "/$data->{Attributes}->{'{}name'}->{Value}"; |
216
|
|
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|
|
} |
217
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|
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218
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0
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|
|
return $uri; |
219
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} |
220
|
|
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221
|
|
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|
|
sub make_link { |
222
|
0
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|
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0
|
0
|
|
my $self = shift; |
223
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0
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|
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|
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my $data = shift; |
224
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225
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0
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my $link = $self->build_uri($data); |
226
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227
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0
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0
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if ($self->{'__callbacks'}{'link'}) { |
228
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0
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|
$link = &{$self->{'__callbacks'}{'link'}}($link); |
|
0
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229
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} |
230
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231
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0
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return $link; |
232
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} |
233
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234
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sub ns_map { |
235
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0
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0
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0
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|
my $self = shift; |
236
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0
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|
my $prefix = shift; |
237
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0
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|
return NS->{$prefix}; |
238
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|
} |
239
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|
240
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|
sub rdf_resource { |
241
|
0
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0
|
0
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|
my $self = shift; |
242
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0
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|
my $resource = shift; |
243
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|
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|
244
|
0
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|
|
my $ns = NS->{"rdf"}; |
245
|
|
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|
246
|
0
|
|
|
|
|
|
return {"{$ns}rdf:resource" => { |
247
|
|
|
|
|
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|
Name => "rdf:resource", |
248
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|
Value => $resource, |
249
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|
Prefix => "rdf", |
250
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|
LocalName => "resource", |
251
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|
NamespaceURI => $ns, |
252
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|
}}; |
253
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|
|
} |
254
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|
255
|
|
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|
|
|
|
sub rdf_about { |
256
|
0
|
|
|
0
|
0
|
|
my $self = shift; |
257
|
0
|
|
|
|
|
|
my $subject = shift; |
258
|
|
|
|
|
|
|
|
259
|
0
|
|
|
|
|
|
my $ns = NS->{"rdf"}; |
260
|
|
|
|
|
|
|
|
261
|
0
|
|
|
|
|
|
return {"{$ns}rdf:about" => { |
262
|
|
|
|
|
|
|
Name => "rdf:about", |
263
|
|
|
|
|
|
|
Value => $subject, |
264
|
|
|
|
|
|
|
Prefix => "rdf", |
265
|
|
|
|
|
|
|
LocalName => "about", |
266
|
|
|
|
|
|
|
NamespaceURI => $ns, |
267
|
|
|
|
|
|
|
}}; |
268
|
|
|
|
|
|
|
} |
269
|
|
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|
|
270
|
|
|
|
|
|
|
=head1 VERSION |
271
|
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|
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|
|
|
272
|
|
|
|
|
|
|
0.9.1 |
273
|
|
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|
|
|
|
|
274
|
|
|
|
|
|
|
=head1 DATE |
275
|
|
|
|
|
|
|
|
276
|
|
|
|
|
|
|
May 24, 2002 |
277
|
|
|
|
|
|
|
|
278
|
|
|
|
|
|
|
=head1 AUTHOR |
279
|
|
|
|
|
|
|
|
280
|
|
|
|
|
|
|
Aaron Straup Cope |
281
|
|
|
|
|
|
|
|
282
|
|
|
|
|
|
|
=head1 SEE ALSO |
283
|
|
|
|
|
|
|
|
284
|
|
|
|
|
|
|
L |
285
|
|
|
|
|
|
|
|
286
|
|
|
|
|
|
|
=head1 LICENSE |
287
|
|
|
|
|
|
|
|
288
|
|
|
|
|
|
|
Copright (c) 2002, Aaron Straup Cope. All Rights Reserved. |
289
|
|
|
|
|
|
|
|
290
|
|
|
|
|
|
|
This is free software, you may use it and distribute it under the same terms as Perl itself. |
291
|
|
|
|
|
|
|
|
292
|
|
|
|
|
|
|
=cut |
293
|
|
|
|
|
|
|
|
294
|
|
|
|
|
|
|
return 1; |
295
|
|
|
|
|
|
|
|
296
|
|
|
|
|
|
|
} |