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package Pod::Weaver::Role::StringFromComment 4.018; |
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# ABSTRACT: Extract a string from a specially formatted comment |
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use Moose::Role; |
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# BEGIN BOILERPLATE |
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use v5.20.0; |
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use warnings; |
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use utf8; |
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no feature 'switch'; |
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use experimental qw(postderef postderef_qq); # This experiment gets mainlined. |
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# END BOILERPLATE |
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use namespace::autoclean; |
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#pod =head1 OVERVIEW |
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#pod |
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#pod This role assists L<Pod::Weaver sections|Pod::Weaver::Role::Section> by |
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#pod allowing them to pull strings from the source comments formatted like: |
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#pod |
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#pod # KEYNAME: Some string... |
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#pod |
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#pod This is probably the most familiar to people using lines like the following to |
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#pod allow the L<Name section|Pod::Weaver::Section::Name> to determine a module's |
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#pod abstract: |
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#pod |
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#pod # ABSTRACT: Provides the HypnoToad with mind-control powers |
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#pod |
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#pod It will extract these strings by inspecting the C<ppi_document> which |
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#pod must be given. |
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#pod |
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#pod =head1 PRIVATE METHODS |
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#pod |
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#pod This role supplies only methods meant to be used internally by its consumer. |
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#pod |
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#pod =head2 _extract_comment_content($ppi_doc, $key) |
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#pod |
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#pod Given a key, try to find a comment matching C<# $key:> in the C<$ppi_document> |
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#pod and return everything but the prefix. |
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#pod |
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#pod e.g., given a document with a comment in it of the form: |
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#pod |
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#pod # ABSTRACT: Yada yada... |
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#pod |
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#pod ...and this is called... |
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#pod |
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#pod $self->_extract_comment_content($ppi, 'ABSTRACT') |
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#pod |
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#pod ...it returns to us: |
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#pod |
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#pod Yada yada... |
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#pod |
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#pod =cut |
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sub _extract_comment_content { |
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my ($self, $ppi_document, $key) = @_; |
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my $regex = qr/^\s*#+\s*$key:\s*(.+)$/m; |
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my $content; |
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my $finder = sub { |
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my $node = $_[1]; |
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return 0 unless $node->isa('PPI::Token::Comment'); |
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if ( $node->content =~ $regex ) { |
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$content = $1; |
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return 1; |
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} |
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return 0; |
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}; |
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$ppi_document->find_first($finder); |
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return $content; |
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} |
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1; |
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__END__ |
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=pod |
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=encoding UTF-8 |
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=head1 NAME |
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Pod::Weaver::Role::StringFromComment - Extract a string from a specially formatted comment |
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=head1 VERSION |
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version 4.018 |
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=head1 OVERVIEW |
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This role assists L<Pod::Weaver sections|Pod::Weaver::Role::Section> by |
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allowing them to pull strings from the source comments formatted like: |
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# KEYNAME: Some string... |
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This is probably the most familiar to people using lines like the following to |
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allow the L<Name section|Pod::Weaver::Section::Name> to determine a module's |
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abstract: |
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# ABSTRACT: Provides the HypnoToad with mind-control powers |
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It will extract these strings by inspecting the C<ppi_document> which |
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must be given. |
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=head1 PERL VERSION SUPPORT |
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This module has the same support period as perl itself: it supports the two |
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most recent versions of perl. (That is, if the most recently released version |
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is v5.40, then this module should work on both v5.40 and v5.38.) |
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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 PRIVATE METHODS |
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This role supplies only methods meant to be used internally by its consumer. |
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=head2 _extract_comment_content($ppi_doc, $key) |
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Given a key, try to find a comment matching C<# $key:> in the C<$ppi_document> |
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and return everything but the prefix. |
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e.g., given a document with a comment in it of the form: |
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# ABSTRACT: Yada yada... |
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...and this is called... |
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$self->_extract_comment_content($ppi, 'ABSTRACT') |
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...it returns to us: |
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Yada yada... |
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=head1 AUTHOR |
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Ricardo SIGNES <rjbs@semiotic.systems> |
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=head1 COPYRIGHT AND LICENSE |
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This software is copyright (c) 2021 by Ricardo SIGNES. |
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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=cut |