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package Pod::Elemental 0.103006; |
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# ABSTRACT: work with nestable Pod elements |
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use Moose; |
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use namespace::autoclean; |
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use Sub::Exporter::ForMethods (); |
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use Mixin::Linewise::Readers |
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{ installer => Sub::Exporter::ForMethods::method_installer }, |
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-readers; |
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use MooseX::Types; |
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use Pod::Eventual::Simple 0.004; # nonpod events |
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use Pod::Elemental::Document; |
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use Pod::Elemental::Transformer::Pod5; |
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use Pod::Elemental::Objectifier; |
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#pod =head1 DESCRIPTION |
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#pod |
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#pod Pod::Elemental is a system for treating a Pod (L<plain old |
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#pod documentation|perlpod>) documents as trees of elements. This model may be |
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#pod familiar from many other document systems, especially the HTML DOM. |
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#pod Pod::Elemental's document object model is much less sophisticated than the HTML |
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#pod DOM, but still makes a lot of document transformations easy. |
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#pod |
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#pod In general, you'll want to read in a Pod document and then perform a number of |
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#pod prepackaged transformations on it. The most common of these will be the L<Pod5 |
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#pod transformation|Pod::Elemental::Transformer::Pod5>, which assumes that the basic |
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#pod meaning of Pod commands described in the Perl 5 documentation hold: C<=begin>, |
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#pod C<=end>, and C<=for> commands mark regions of the document, leading whitespace |
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#pod marks a verbatim paragraph, and so on. The Pod5 transformer also eliminates |
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#pod the need to track elements representing vertical whitespace. |
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#pod |
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#pod =head1 SYNOPSIS |
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#pod |
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#pod use Pod::Elemental; |
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#pod use Pod::Elemental::Transformer::Pod5; |
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#pod |
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#pod my $document = Pod::Elemental->read_file('lib/Pod/Elemental.pm'); |
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#pod |
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#pod Pod::Elemental::Transformer::Pod5->new->transform_node($document); |
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#pod |
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#pod print $document->as_debug_string, "\n"; # quick overview of doc structure |
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#pod |
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#pod print $document->as_pod_string, "\n"; # reproduce the document in Pod |
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#pod |
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#pod =method read_handle |
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#pod |
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#pod =method read_file |
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#pod |
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#pod =method read_string |
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#pod |
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#pod These methods read the given input and return a Pod::Elemental::Document. |
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#pod |
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#pod =cut |
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sub read_handle { |
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my ($self, $handle) = @_; |
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$self = $self->new unless ref $self; |
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my $events = $self->event_reader->read_handle($handle); |
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my $elements = $self->objectifier->objectify_events($events); |
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my $document = $self->document_class->new({ |
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children => $elements, |
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}); |
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return $document; |
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} |
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#pod =attr event_reader |
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#pod |
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#pod The event reader (by default a new instance of |
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#pod L<Pod::Eventual::Simple|Pod::Eventual::Simple> is used to convert input into an |
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#pod event stream. In general, it should provide C<read_*> methods that behave like |
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#pod Pod::Eventual::Simple. |
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#pod |
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#pod =cut |
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has event_reader => ( |
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is => 'ro', |
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required => 1, |
85
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default => sub { return Pod::Eventual::Simple->new }, |
86
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); |
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#pod =attr objectifier |
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#pod |
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#pod The objectifier (by default a new Pod::Elemental::Objectifier) must provide an |
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#pod C<objectify_events> method that converts Pod events into |
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#pod Pod::Elemental::Element objects. |
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#pod |
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#pod =cut |
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has objectifier => ( |
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is => 'ro', |
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isa => duck_type( [qw(objectify_events) ]), |
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required => 1, |
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default => sub { return Pod::Elemental::Objectifier->new }, |
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); |
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103
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#pod =attr document_class |
104
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#pod |
105
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#pod This is the class for documents created by reading pod. |
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#pod |
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#pod =cut |
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109
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has document_class => ( |
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is => 'ro', |
111
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required => 1, |
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default => 'Pod::Elemental::Document', |
113
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); |
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115
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__PACKAGE__->meta->make_immutable; |
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no Moose; |
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1; |
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119
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__END__ |
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=pod |
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123
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=encoding UTF-8 |
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125
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=head1 NAME |
126
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127
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Pod::Elemental - work with nestable Pod elements |
128
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129
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=head1 VERSION |
130
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131
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version 0.103006 |
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133
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=head1 SYNOPSIS |
134
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135
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use Pod::Elemental; |
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use Pod::Elemental::Transformer::Pod5; |
137
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138
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my $document = Pod::Elemental->read_file('lib/Pod/Elemental.pm'); |
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140
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Pod::Elemental::Transformer::Pod5->new->transform_node($document); |
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142
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print $document->as_debug_string, "\n"; # quick overview of doc structure |
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144
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print $document->as_pod_string, "\n"; # reproduce the document in Pod |
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146
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=head1 DESCRIPTION |
147
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148
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Pod::Elemental is a system for treating a Pod (L<plain old |
149
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documentation|perlpod>) documents as trees of elements. This model may be |
150
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familiar from many other document systems, especially the HTML DOM. |
151
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Pod::Elemental's document object model is much less sophisticated than the HTML |
152
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DOM, but still makes a lot of document transformations easy. |
153
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154
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In general, you'll want to read in a Pod document and then perform a number of |
155
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prepackaged transformations on it. The most common of these will be the L<Pod5 |
156
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transformation|Pod::Elemental::Transformer::Pod5>, which assumes that the basic |
157
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meaning of Pod commands described in the Perl 5 documentation hold: C<=begin>, |
158
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C<=end>, and C<=for> commands mark regions of the document, leading whitespace |
159
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marks a verbatim paragraph, and so on. The Pod5 transformer also eliminates |
160
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the need to track elements representing vertical whitespace. |
161
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162
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=head1 PERL VERSION |
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164
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This library should run on perls released even a long time ago. It should work |
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on any version of perl released in the last five years. |
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167
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Although it may work on older versions of perl, no guarantee is made that the |
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minimum required version will not be increased. The version may be increased |
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for any reason, and there is no promise that patches will be accepted to lower |
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the minimum required perl. |
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=head1 ATTRIBUTES |
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174
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=head2 event_reader |
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176
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The event reader (by default a new instance of |
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L<Pod::Eventual::Simple|Pod::Eventual::Simple> is used to convert input into an |
178
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event stream. In general, it should provide C<read_*> methods that behave like |
179
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Pod::Eventual::Simple. |
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181
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=head2 objectifier |
182
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183
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The objectifier (by default a new Pod::Elemental::Objectifier) must provide an |
184
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C<objectify_events> method that converts Pod events into |
185
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Pod::Elemental::Element objects. |
186
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187
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=head2 document_class |
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189
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This is the class for documents created by reading pod. |
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191
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=head1 METHODS |
192
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193
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=head2 read_handle |
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195
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=head2 read_file |
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197
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=head2 read_string |
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199
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These methods read the given input and return a Pod::Elemental::Document. |
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201
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=head1 AUTHOR |
202
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203
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Ricardo SIGNES <cpan@semiotic.systems> |
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205
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=head1 CONTRIBUTORS |
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207
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=for stopwords Christian Walde Justin Cook Karen Etheridge Philippe Bruhat (BooK) Ricardo Signes |
208
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209
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=over 4 |
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211
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=item * |
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213
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Christian Walde <walde.christian@googlemail.com> |
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215
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=item * |
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Justin Cook <jcook@cray.com> |
218
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219
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=item * |
220
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221
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Karen Etheridge <ether@cpan.org> |
222
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223
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=item * |
224
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225
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Philippe Bruhat (BooK) <book@cpan.org> |
226
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227
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=item * |
228
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229
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Ricardo Signes <rjbs@semiotic.systems> |
230
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231
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=back |
232
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233
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=head1 COPYRIGHT AND LICENSE |
234
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235
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This software is copyright (c) 2022 by Ricardo SIGNES. |
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237
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This is free software; you can redistribute it and/or modify it under |
238
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the same terms as the Perl 5 programming language system itself. |
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240
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=cut |