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=head1 NAME |
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XML::Filter::EzPod - A SAX filter (for Pod::SAX) that makes writing Pod easier. |
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=head1 SYNOPSIS |
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my $p = Pod::SAX->new( |
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Handler => XML::Filter::EzPod->new( |
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Handler => XML::SAX::Writer->new( |
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Output => \$output |
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) |
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) |
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); |
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=head1 DESCRIPTION |
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Don't you just get sick of writing lists in pod? So much annoying vertical |
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whitespace! I got sick of it too. So this filter turns something like: |
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* A bullet |
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* Point |
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** With extra levels |
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** Going |
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*** Up |
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** and |
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* Down |
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** And up again |
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Into the appropriate SAX events as though the source were a POD list. |
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=head1 SUPPORTED SYNTAX |
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=head2 Itemized Lists |
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Can be created with asterisks. These must be in the first column, and followed |
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by whitespace. Arbitrary asterisk levels are supported. |
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Example: |
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* an itemized |
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* list is created |
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* as follows |
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** with possible further indents |
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=head2 Ordered Lists |
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Can be created with hashes (also known as the pound sign). These must be in the |
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first column and followed by whitespace. Arbitrary levels are supported. |
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Example: |
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# An ordered |
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# list is created |
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# as follows |
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## with possible |
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## further indents |
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=head2 The C Value |
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It is possible to set the value normally given in POD's C<=over N> parameter |
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using the greater-than sign before your list: |
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63
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>6 |
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* A bulleted list |
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* equivalent to =over 6 |
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A single greater-than sign on its own will set the C to I<-1> which |
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is useful in conjunction with AxKit2's I plugin, indicating the points |
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should appear incrementally. |
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A double greater-than sign will set the C to I<-2>. Again, for |
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spod5, indicating the points should appear incrementally with the first point |
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shown automatically. |
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=head1 LICENSE |
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This is free software. You may use it and redistribute it under the same terms |
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as perl itself. |
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=head1 AUTHOR |
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82
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Matt Sergeant, |
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=head1 BUGS |
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86
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The test suite doesn't actually test anything - it's there for me as a visual |
87
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inspection to check everything's working. |
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89
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=cut |
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91
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package XML::Filter::EzPod; |
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181824
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use strict; |
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273
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our $VERSION = '1.2'; |
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5
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1461
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use XML::SAX::Base; |
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19847
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99
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use base qw(XML::SAX::Base); |
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5560
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100
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101
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sub new { |
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4
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4
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0
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1148
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my $class = shift; |
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my $self = $class->SUPER::new(@_); |
104
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189
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$self->{in_paragraph} = 0; |
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$self->{cur_element} = ''; |
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$self->{ol_level} = 0; |
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$self->{ul_level} = 0; |
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$self->{indent} = 4; |
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$self->{listopen} = 0; |
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4
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return $self; |
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} |
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113
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sub start_element { |
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1
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8800
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my ($self, $el) = @_; |
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116
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$self->{cur_element} = $el->{LocalName}; |
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100
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if ($el->{LocalName} eq 'para') { |
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118
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$self->{in_paragraph}++; |
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} |
120
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elsif ($self->{in_paragraph}) { |
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# paragraph sub-element (e.g. I<...>) |
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1
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1
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$self->{in_paragraph}++; |
123
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} |
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125
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25
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133
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$self->SUPER::start_element($el); |
126
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} |
127
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128
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sub end_element { |
129
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1
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1170
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my ($self, $el) = @_; |
130
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131
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25
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100
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74
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if ($self->{in_paragraph}) { |
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17
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23
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$self->{in_paragraph}--; |
133
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} |
134
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100
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60
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if ($self->{in_paragraph} == 0) { |
135
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# close all lists |
136
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24
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51
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$self->close_list; |
137
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24
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56
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for (1 .. $self->{ol_level}) { |
138
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#print "\n"; |
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2
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79
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$self->SUPER::end_element(_element('orderedlist')); |
140
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2
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94
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$self->{ol_level} = 0; |
141
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} |
142
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24
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46
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for (1 .. $self->{ul_level}) { |
143
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#print "\n"; |
144
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6
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16
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$self->SUPER::end_element(_element('itemizedlist')); |
145
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6
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271
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$self->{ul_level} = 0; |
146
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} |
147
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24
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37
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$self->{indent} = 4; |
148
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} |
149
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150
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25
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103
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$self->SUPER::end_element($el); |
151
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} |
152
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153
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sub close_list { |
154
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55
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55
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0
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65
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my $self = shift; |
155
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55
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100
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128
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if ($self->{listopen}) { |
156
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31
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51
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$self->SUPER::end_element(_element('listitem', 1)); |
157
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31
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2910
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$self->{listopen} = 0; |
158
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} |
159
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} |
160
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161
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sub characters { |
162
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50
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50
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1
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7036
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my ($self, $data) = @_; |
163
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164
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50
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100
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138
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if ($self->{cur_element} eq 'para') { |
165
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#print "Chars: $data->{Data}\n"; |
166
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31
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100
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118
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if ($data->{Data} =~ /^[\*\#]/m) { |
167
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# likely candidate for turning into bullet points |
168
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6
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27
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my @lines = split(/\n/, $data->{Data}); |
169
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6
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16
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for my $line (@lines) { |
170
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35
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100
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121
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if ($line =~ /^>(>?)$/) { |
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100
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171
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2
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100
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5
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if ($1) { |
172
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1
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3
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$self->{indent} = "-2"; |
173
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} |
174
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else { |
175
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1
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2
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$self->{indent} = "-1"; |
176
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} |
177
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2
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4
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next; |
178
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} |
179
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elsif ($line =~ /^>(\d+)$/) { |
180
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1
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3
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$self->{indent} = $1; |
181
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1
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2
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next; |
182
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} |
183
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32
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100
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138
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if ($line =~ s/^(\*+)\s//) { |
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100
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184
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21
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42
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$self->close_list; |
185
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21
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38
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my $depth = length($1); |
186
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21
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100
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46
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if ($self->{ol_level}) { |
187
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1
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4
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for (1 .. $self->{ol_level}) { |
188
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#print "\n"; |
189
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1
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3
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$self->SUPER::end_element(_element('orderedlist')); |
190
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} |
191
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1
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54
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$self->{ol_level} = 0; |
192
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} |
193
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21
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40
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my $diff = $depth - $self->{ul_level}; |
194
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21
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38
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while ($diff) { |
195
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16
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100
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44
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if ($diff > 0) { |
196
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#print " |
197
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12
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28
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$self->SUPER::start_element( |
198
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_add_attrib(_element('itemizedlist'), indent_width => $self->{indent}) |
199
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); |
200
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12
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831
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$diff--; |
201
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} |
202
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else { |
203
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#print "\n"; |
204
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4
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41
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$self->SUPER::end_element(_element('itemizedlist', 1)); |
205
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4
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166
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$diff++; |
206
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} |
207
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} |
208
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21
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31
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$self->{ul_level} = $depth; |
209
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#print "$line\n"; |
210
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21
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73
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$self->SUPER::start_element(_element('listitem')); |
211
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21
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1154
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$self->SUPER::characters({ Data => $line }); |
212
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21
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194
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$self->{listopen} = 1; |
213
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} |
214
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elsif ($line =~ s/^(\#+)\s//) { |
215
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10
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19
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$self->close_list; |
216
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10
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20
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my $depth = length($1); |
217
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10
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100
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24
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if ($self->{ul_level}) { |
218
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1
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3
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for (1 .. $self->{ul_level}) { |
219
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2
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43
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$self->SUPER::end_element(_element('itemizedlist')); |
220
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} |
221
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1
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43
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$self->{ul_level} = 0; |
222
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|
|
|
|
|
|
} |
223
|
10
|
|
|
|
|
18
|
my $diff = $depth - $self->{ol_level}; |
224
|
10
|
|
|
|
|
20
|
while ($diff) { |
225
|
7
|
100
|
|
|
|
16
|
if ($diff > 0) { |
226
|
|
|
|
|
|
|
#print "\n"; |
227
|
5
|
|
|
|
|
10
|
$self->SUPER::start_element( |
228
|
|
|
|
|
|
|
_add_attrib(_element('orderedlist'), indent_width => $self->{indent}) |
229
|
|
|
|
|
|
|
); |
230
|
5
|
|
|
|
|
348
|
$diff--; |
231
|
|
|
|
|
|
|
} |
232
|
|
|
|
|
|
|
else { |
233
|
|
|
|
|
|
|
#print "\n"; |
234
|
2
|
|
|
|
|
7
|
$self->SUPER::end_element(_element('orderedlist', 1)); |
235
|
2
|
|
|
|
|
102
|
$diff++; |
236
|
|
|
|
|
|
|
} |
237
|
|
|
|
|
|
|
} |
238
|
10
|
|
|
|
|
16
|
$self->{ol_level} = $depth; |
239
|
|
|
|
|
|
|
#print "$line\n"; |
240
|
10
|
|
|
|
|
39
|
$self->SUPER::start_element(_element('listitem')); |
241
|
10
|
|
|
|
|
589
|
$self->SUPER::characters({ Data => $line }); |
242
|
10
|
|
|
|
|
94
|
$self->{listopen} = 1; |
243
|
|
|
|
|
|
|
} |
244
|
|
|
|
|
|
|
else { |
245
|
1
|
|
|
|
|
6
|
$self->SUPER::characters({ Data => $line }); |
246
|
|
|
|
|
|
|
} |
247
|
|
|
|
|
|
|
} |
248
|
6
|
|
|
|
|
26
|
return; |
249
|
|
|
|
|
|
|
} |
250
|
|
|
|
|
|
|
} |
251
|
|
|
|
|
|
|
|
252
|
44
|
|
|
|
|
194
|
$self->SUPER::characters($data); |
253
|
|
|
|
|
|
|
} |
254
|
|
|
|
|
|
|
|
255
|
|
|
|
|
|
|
sub _element { |
256
|
96
|
|
|
96
|
|
126
|
my ($name, $end) = @_; |
257
|
|
|
|
|
|
|
return { |
258
|
96
|
100
|
|
|
|
604
|
Name => $name, |
259
|
|
|
|
|
|
|
LocalName => $name, |
260
|
|
|
|
|
|
|
$end ? () : (Attributes => {}), |
261
|
|
|
|
|
|
|
NamespaceURI => '', |
262
|
|
|
|
|
|
|
Prefix => '', |
263
|
|
|
|
|
|
|
}; |
264
|
|
|
|
|
|
|
} |
265
|
|
|
|
|
|
|
|
266
|
|
|
|
|
|
|
sub _add_attrib { |
267
|
17
|
|
|
17
|
|
27
|
my ($el, $name, $value) = @_; |
268
|
|
|
|
|
|
|
|
269
|
17
|
|
|
|
|
90
|
$el->{Attributes}{"{}$name"} = |
270
|
|
|
|
|
|
|
{ |
271
|
|
|
|
|
|
|
Name => $name, |
272
|
|
|
|
|
|
|
LocalName => $name, |
273
|
|
|
|
|
|
|
Prefix => "", |
274
|
|
|
|
|
|
|
NamespaceURI => "", |
275
|
|
|
|
|
|
|
Value => $value, |
276
|
|
|
|
|
|
|
}; |
277
|
|
|
|
|
|
|
|
278
|
17
|
|
|
|
|
86
|
return $el; |
279
|
|
|
|
|
|
|
} |
280
|
|
|
|
|
|
|
|
281
|
|
|
|
|
|
|
1; |