path: root/pandoc-filter-sections

#!/usr/bin/perl

use warnings;
use strict;

use Pandoc::Filter;
use Pandoc::Elements;

# FIXME: avoid eating content past tweaked headers
pandoc_filter(
    \&frontmatter,
    \&mainmatter,
    \&backmatter,
    \&toc,
);

# FIXME: use Header (not latex RawBlock) - why does it hang?!?
sub header {
    my $label = shift;
#   Header( 1, attributes {}, [ Str $label ], );
    RawBlock( 'latex', '\\chapter{'.$label.'}' );
};

sub frontmatter {
    my $self = shift;
    return [ RawBlock( 'latex', '\\frontmatter' ), header('About'), ]
        if ( $self->name eq 'Header' and $self->level >= 1
            and stringify($self) eq 'About' );
    return;
}

sub mainmatter {
    my $self = shift;
    return [ RawBlock( 'latex', '\\mainmatter' ), header(stringify($self)), ]
        if ( $self->name eq 'Header' and $self->level == 1
            and stringify($self) =~ /^Scope/ );
    return;
}

sub backmatter {
    my $self = shift;
    return [ RawBlock( 'latex', '\\backmatter' ), header('References'), ]
        if ( $self->name eq 'Header' and $self->level == 1
            and stringify($self) =~ /^Notes/ );
    return;
}

sub toc {
    my $self = shift;
    return unless ( $self->name eq 'Header' and $self->level == 1
        and stringify($self) =~ /^Table/ );
    return RawBlock( 'latex',
        '{\\hypersetup{linkcolor=black}\\setcounter{tocdepth}{3}\\tableofcontents}'
    );
}