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package Text::Amuse::Beamer; |
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use strict; |
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1109
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use warnings; |
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use utf8; |
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# use Data::Dumper; |
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=head1 NAME |
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Text::Amuse::Beamer - Beamer output for Text::Amuse |
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=head1 DESCRIPTION |
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Parse the L LaTeX result and convert it to a |
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beamer documentclass body, wrapping the text into frames. |
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=head1 SYNOPSIS |
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The module is used internally by L, so everything here is |
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pretty much internal only (and underdocumented). |
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=head1 CONSTRUCTORS |
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=over 4 |
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=item new(latex => \@latex_chunks) |
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=back |
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=head1 METHODS |
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=over 4 |
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=item latex |
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Accessor to the latex arrayref passed at the constructor. |
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=item process |
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Return the beamer body as a string. |
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=cut |
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sub new { |
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my ($class, %args) = @_; |
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die "Missing latex" unless $args{latex}; |
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my $self = { latex => [ @{$args{latex}} ] }; |
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bless $self, $class; |
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} |
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sub latex { |
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return shift->{latex}; |
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} |
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sub process { |
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my $self = shift; |
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my $latex = $self->latex; |
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my @out; |
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# these chunks correspond to the various elements found, so if |
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# it's an heading, it's guaranteed to be this way. |
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my ($in_frame, $in_text, @current, $current_title); |
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# print Dumper($latex); |
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foreach my $piece (@$latex) { |
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$piece =~ s/\\footnoteB?\{/\\footnote[frame]{/g; |
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if ($piece =~ /\A\s*\\( |
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part| |
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chapter| |
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section| |
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subsection| |
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subsubsection) |
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(\[\{(.+)\}\])? |
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(\{(.+)\}\s*\z) |
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/x) { |
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my $type = $1; |
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$in_frame = $3 || $5; |
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if (@current) { |
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push @out, { title => $current_title || '', |
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body => [@current] }; |
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@current = (); |
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} |
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push @out, "\\" . $type . '{' . $in_frame . '}' . "\n\n"; |
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$current_title = $in_frame; |
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} |
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elsif (defined $in_frame) { |
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push @current, $piece; |
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} |
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} |
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# flush; |
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if ($in_frame && @current) { |
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push @out, { title => $current_title, |
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body => [@current] }; |
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} |
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return $self->_render(\@out); |
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} |
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sub _render { |
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my ($self, $list) = @_; |
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my @out; |
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ELEMENT: |
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foreach my $el (@$list) { |
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if (ref($el)) { |
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my $body = join('', @{$el->{body}}); |
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if ($body =~ m/^%\s+no\s*slides?\s*$/im) { |
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# and remove the previous element with the chapter |
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pop @out if @out; |
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next ELEMENT; |
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} |
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push @out, "\n\\begin{frame}[fragile]{$el->{title}}\n", $body, |
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"\\end{frame}\n\n"; |
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} |
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else { |
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push @out, $el; |
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} |
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} |
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if (@out) { |
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return join('', @out); |
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} |
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else { |
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return ''; |
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} |
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} |
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=back |
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=cut |
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127
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1; |