Move MarkdownBook modules into Text namespace.

6 files changed, 820 insertions, 0 deletions

diff --git a/lib/Text/MarkdownBook/Book.pm b/lib/Text/MarkdownBook/Book.pm
new file mode 100644
index 0000000..4c49d1d
--- /dev/null
+++ b/lib/Text/MarkdownBook/Book.pm
@@ -0,0 +1,264 @@
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Carp;
+
+package Text::MarkdownBook::Book;
+
+sub new
+{
+	my ($class, $format, $dir) = @_;
+	my $self;
+	my $control_fh;
+
+	$class = ref($class) || $class;
+	$self = {};
+	bless($self, $class);
+
+	unless ($format =~ m/^[a-z]+/) {
+		Carp::croak('Invalid format "' . $format . '"');
+	}
+	eval {
+		require 'Text/MarkdownBook/Document/' . $format . '.pm';
+		1;
+	} or Carp::croak('Unsupported format "' . $format . '"');
+	$self->{'format'} = $format;
+
+	$self->{'dir'} = $dir;
+	$self->{'docs'} = [];
+	$self->{'sections'} = [];
+	$self->{'sections_by_id'} = {};
+
+	open($control_fh, '<', $dir . '/control');
+	while (<$control_fh>) {
+		chomp($_);
+		if (m/^Title: /) {
+			s/^Title: (.*)$/$1/;
+			$self->{'title'} = $_;
+		}
+	}
+	close($control_fh);
+
+	$self->create_documents();
+
+	return $self;
+}
+
+sub dir
+{
+	my ($self, $dir) = @_;
+	my $old = $self->{'dir'};
+
+	$self->{'dir'} = $dir if defined($dir);
+
+	return $old;
+}
+
+sub title
+{
+	my ($self, $title) = @_;
+	my $old = $self->{'title'};
+
+	$self->{'title'} = $title if defined($title);
+
+	return $old;
+}
+
+sub documents
+{
+	my ($self, $documents) = @_;
+	my $old = $self->{'docs'};
+
+	$self->{'docs'} = $documents if defined($documents);
+
+	return $old;
+}
+
+sub _get_document_module
+{
+	my ($self) = @_;
+
+	return 'Text::MarkdownBook::Document::' . $self->{'format'};
+}
+
+sub create_documents
+{
+	my ($self) = @_;
+	my $series_fh;
+	my $file;
+	my $title;
+	my $i;
+	my $doc;
+	my $doc_prev;
+	my @letters;
+
+	# Create index document.
+	$doc = $self->_get_document_module()->new($self, 'index', 'index',
+		undef, $self->{'title'});
+	$doc_prev = $doc;
+	push(@{$self->{'docs'}}, $doc);
+
+	# Create chapter documents.
+	$i = 0;
+	open($series_fh, '<', $self->{'dir'} . '/chapters')
+		or Carp::croak('Cannot open chapters file');
+	while (<$series_fh>) {
+		chomp($_);
+		($file, $title) = split(/[ \t]+/, $_, 2);
+		$doc = $self->_get_document_module()->new($self, 'chapter', $file,
+			++$i, $title);
+		$doc->prev($doc_prev);
+		$doc_prev->next($doc) if defined $doc_prev;
+		$doc_prev = $doc;
+		push(@{$self->{'docs'}}, $doc);
+	}
+	close($series_fh);
+
+	# Create appendix documents.
+	$i = -1;
+	@letters = ('A' .. 'Z');
+	if (-e $self->{'dir'} . '/appendices') {
+		open($series_fh, '<', $self->{'dir'} . '/apendices')
+			or Carp::croak('Cannot open appendices file');
+		while (<$series_fh>) {
+			chomp($_);
+			($file, $title) = split(/[ \t]+/, $_, 2);
+			$doc = $self->_get_document_module()->new($self, 'appendix', $file,
+				$letters[++$i], $title);
+			$doc->prev($doc_prev);
+			$doc_prev->next($doc) if defined $doc_prev;
+			$doc_prev = $doc;
+			push(@{$self->{'docs'}}, $doc);
+		}
+		close($series_fh);
+	}
+}
+
+sub add_section
+{
+	my ($self, $section) = @_;
+
+	push(@{$self->{'sections'}}, $section);
+
+	# Index sections (not documents) by ID.
+	if (ref($section) eq 'Text::MarkdownBook::Section') {
+		$self->{'sections_by_id'}->{$section->id()} = $section;
+	}
+}
+
+sub subst_macros
+{
+	my ($self, $text) = @_;
+
+	# Substitute macros with arguments.
+	$text =~ s/
+		\$                              # Dollar sign
+		\[                              # Left square bracket
+		([^\]]+)                        # Macro
+		\]                              # Right square bracket
+		(
+		  \[                            # Left square bracket
+		    ([^\]]+)                    # Macro arguments
+		  \]                            # Right square bracket
+		)
+		/$self->_do_subst_macro($1, split(m@[ \t]+@, $3))/exg;
+
+	# Substitute macros without arguments.
+	$text =~ s/
+		\$                              # Dollar sign
+		\[                              # Left square bracket
+		([^\]]+)                        # Macro
+		\]                              # Right square bracket
+		/$self->_do_subst_macro($1)/exg;
+
+	return $text;
+}
+
+sub _do_subst_macro
+{
+	my ($self, $macro, @args) = @_;
+	my $sec;
+
+	if ($macro eq 'toc') {
+		return $self->_do_gen_toc();
+	} elsif ($macro eq 'sectlink') {
+		if (@args != 1) {
+			Carp::carp('Invalid arguments to "sectlink" macro');
+		} else {
+			$sec = $self->{'sections_by_id'}->{$args[0]};
+			return '[§ ' . $sec->number() . '][' . $sec->id() . ']';
+		}
+	} else {
+		Carp::carp("Unrecognized macro \"$macro\"");
+	}
+}
+
+sub _do_gen_toc
+{
+	my ($self) = @_;
+	my $section;
+	my $toc = '';
+
+	foreach $section (@{$self->{'sections'}}) {
+		$toc .= "\n" if $toc ne '';
+		if (ref($section) =~ m/^Text::MarkdownBook::Document/) {
+			next if $section->type() eq 'index';
+			$toc .= '  * [';
+			$toc .= $section->id();
+			$toc .= ' ';
+			$toc .= $section->title();
+			$toc .= '][';
+			$toc .= $section->file();
+			$toc .= ']';
+		} elsif (ref($section) eq 'Text::MarkdownBook::Section') {
+			$toc .= '  ' x $section->level();
+			$toc .= ($section->level() == 1 ? '  - [' : '  * [');
+			$toc .= $section->number();
+			$toc .= ' ';
+			$toc .= $section->title();
+			$toc .= '][';
+			$toc .= $section->id();
+			$toc .= ']';
+		}
+	}
+
+	return $toc;
+}
+
+sub parse
+{
+	my ($self) = @_;
+	my $doc;
+
+	foreach $doc (@{$self->{'docs'}}) {
+		$self->add_section($doc);
+		$doc->parse();
+	}
+}
+
+sub output
+{
+	my ($self) = @_;
+	my $doc;
+
+	foreach $doc (@{$self->{'docs'}}) {
+		$doc->output();
+	}
+}
+
+1;
diff --git a/lib/Text/MarkdownBook/Document.pm b/lib/Text/MarkdownBook/Document.pm
new file mode 100644
index 0000000..af16be4
--- /dev/null
+++ b/lib/Text/MarkdownBook/Document.pm
@@ -0,0 +1,245 @@
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Text::MarkdownBook::Section;
+use Carp;
+
+package Text::MarkdownBook::Document;
+
+sub new
+{
+	my ($class, $book, $type, $file, $id, $title) = @_;
+	my $self;
+
+	$class = ref($class) || $class;
+	$self = {};
+	bless($self, $class);
+
+	$self->{'book'} = $book;
+	$self->{'type'} = $type;
+	$self->{'file'} = $file;
+	$self->{'id'} = $id;
+	$self->{'title'} = $title;
+
+	return $self;
+}
+
+sub book
+{
+	my ($self, $book) = @_;
+	my $old = $self->{'book'};
+
+	$self->{'book'} = $book if defined($book);
+
+	return $old;
+}
+
+sub type
+{
+	my ($self, $type) = @_;
+	my $old = $self->{'type'};
+
+	$self->{'type'} = $type if defined($type);
+
+	return $old;
+}
+
+sub file
+{
+	my ($self, $file) = @_;
+	my $old = $self->{'file'};
+
+	$self->{'file'} = $file if defined($file);
+
+	return $old;
+}
+
+sub file_path
+{
+	my ($self) = @_;
+
+	return $self->{'book'}->dir() . '/' . $self->{'file'};
+}
+
+sub id
+{
+	my ($self) = @_;
+
+	return $self->{'id'};
+}
+
+sub title
+{
+	my ($self, $title) = @_;
+	my $old = $self->{'title'};
+
+	$self->{'title'} = $title if defined($title);
+
+	return $old;
+}
+
+sub full_title
+{
+	my ($self) = @_;
+
+	if ($self->{'type'} eq 'chapter') {
+		return sprintf('Chapter %d - %s', $self->{'id'}, $self->{'title'});
+	} elsif ($self->{'type'} eq 'appendix') {
+		return sprintf('Appendix %s - %s', $self->{'id'}, $self->{'title'});
+	} else {
+		return undef;
+	}
+}
+
+sub prev
+{
+	my ($self, $other) = @_;
+	my $old = $self->{'prev'};
+
+	$self->{'prev'} = $other if defined($other);
+
+	return $old;
+}
+
+sub next
+{
+	my ($self, $other) = @_;
+	my $old = $self->{'next'};
+
+	$self->{'next'} = $other if defined($other);
+
+	return $old;
+}
+
+sub sections
+{
+	my ($self) = @_;
+
+	# FIXME: Why is this necessary?!
+	foreach my $sec (@{$self->{'sections'}}) {
+	}
+
+	return $self->{'sections'};
+}
+
+sub parse
+{
+	my ($self) = @_;
+	my $source_fh;
+	my $source_text;
+
+	open($source_fh, '<',
+		$self->{'book'}->dir() . '/' . $self->{'file'} . '.mdwn')
+		or Carp::croak('Cannot open "' . $self->{'file'} . '" source document');
+	$source_text = join('', <$source_fh>);
+	close($source_fh);
+
+	# Parse headings of non-index documents.
+	if ($self->{'type'} ne 'index') {
+		$self->{'section_level_numbers'} = [0, 0];
+		$self->{'section_level'} = -1;
+		$source_text =~ s/
+			^
+			(.+)                        # Heading text
+			[ \t]*                      # Optional trailing whitespace
+			\n                          # Line break
+			(=+|-+)                     # Underline
+			[ \t]*                      # Optional trailing whitespace
+			$
+			/$self->_do_heading($1, $2)/mexg;
+	}
+
+	# Store parsed text.
+	$self->{'source_text'} = $source_text;
+}
+
+sub _do_heading
+{
+	my ($self, $text, $underline) = @_;
+	my $level;
+	my $levels;
+	my $section_number;
+	my $section_title;
+	my $section_id;
+	my $section;
+
+	# Shorten underline to one character.
+	$underline =~ s/^([=-]).*$/$1/;
+
+	# Detect heading level.
+	if ($underline eq '=') {
+		$level = 1;
+	} else {
+		$level = 2;
+	}
+
+	# Calculate section number.
+	$levels = $#{$self->{'section_level_numbers'}};
+	if ($level != $self->{'section_level'}) {
+		foreach (@{$self->{'section_level_numbers'}}[$level .. $levels]) {
+			$_ = 0;
+		}
+	}
+	$self->{'section_level'} = $level;
+	++${$self->{'section_level_numbers'}}[$level - 1];
+	$section_number = join('.', @{$self->{'section_level_numbers'}});
+
+	# Add document ID to section number.
+	$section_number = $self->{'id'} . '.' . $section_number;
+
+	# Trim off unused subsection parts.
+	$section_number =~ s/(?:\.0)*$//;
+
+	# Parse out section title.
+	$section_title = $text;
+	$section_title =~ s/
+		^
+		([^\[]+)                        # Section title
+		[ \t]+                          # Whitespace
+		\[                              # Left square bracket
+		  [^\]]+                        # Section ID
+		\]                              # Right square bracket
+		$
+		/$1/x;
+
+	# Parse out section ID.
+	$section_id = $text;
+	$section_id =~ s/
+		^
+		[^\[\]]+                        # Section title
+		[ \t]+                          # Whitespace
+		\[                              # Left square bracket
+		  ([^\]]+)                      # Section ID
+		\]                              # Right square bracket
+		$
+		/$1/x;
+
+	# Create and store section object.
+	$section = Text::MarkdownBook::Section->new($self,
+		$level, $section_number, $section_id, $section_title);
+	push(@{$self->{'sections'}}, $section);
+	$self->{'book'}->add_section($section);
+
+	# Prepend number to section title.
+	$text = $section_number . ' ' . $section_title;
+
+	# Return underlined section title.
+	return $text . "\n" . $underline x length($text);
+}
+
+1;
diff --git a/lib/Text/MarkdownBook/Document/html.pm b/lib/Text/MarkdownBook/Document/html.pm
new file mode 100644
index 0000000..e074de0
--- /dev/null
+++ b/lib/Text/MarkdownBook/Document/html.pm
@@ -0,0 +1,154 @@
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Text::MarkdownBook::Document;
+use Text::MarkdownBook::HTMLTree;
+use Carp;
+use Text::Markdown;
+use HTML::TreeBuilder;
+use HTML::Template;
+
+package Text::MarkdownBook::Document::html;
+
+our @ISA = qw(Text::MarkdownBook::Document);
+
+sub output
+{
+	my ($self) = @_;
+	my $text;
+	my $doc;
+	my $sec;
+
+	# Substitute macros.
+	$text = $self->{'book'}->subst_macros(
+		$self->{'source_text'});
+
+	# Append link definitions.
+	$text .= "\n";
+	foreach $doc (@{$self->{'book'}->documents()}) {
+		$text .= "\n";
+		$text .= '[';
+		$text .= $doc->file();
+		$text .= ']: ';
+		$text .= $doc->file();
+		$text .= '.html';
+		foreach $sec (@{$doc->sections()}) {
+			$text .= "\n";
+			$text .= '[';
+			$text .= $sec->id();
+			$text .= ']: ';
+			$text .= $doc->file();
+			$text .= '.html#';
+			$text .= $sec->id();
+		}
+	}
+
+	# Convert to HTML.
+	$text = Text::Markdown::Markdown($text);
+
+	# Set "id" attributes of headings.
+	$self->_do_set_heading_id_attrs($text);
+
+	# Output the templated HTML.
+	$self->_do_output_template();
+
+	# Clean up.
+	$self->{'tree'}->delete();
+}
+
+sub _do_set_heading_id_attrs
+{
+	my ($self, $text) = @_;
+	my @headings;
+	my $heading;
+	my $i = -1;
+
+	# Parse HTML.
+	$self->{'tree'} = HTML::TreeBuilder->new();
+	$self->{'tree'}->parse($text);
+	$self->{'tree'}->eof($text);
+
+	# Find the "body" element.
+	@{$self->{'tree_body'}} =
+		Text::MarkdownBook::HTMLTree::find_elements_by_tag_names(
+			$self->{'tree'}, ('body'));
+
+	# Don't modify headings of index documents.
+	return if $self->{'type'} eq 'index';
+	
+	# Find all headings.
+	@headings = Text::MarkdownBook::HTMLTree::find_elements_by_tag_names(
+		@{$self->{'tree_body'}}[0], ('h1', 'h2'));
+
+	# Set "id" attributes.
+	foreach $heading (@headings) {
+		$heading->attr('id', ${$self->{'sections'}}[++$i]->id());
+	}
+}
+
+sub _do_output_template
+{
+	my ($self) = @_;
+
+	my $doc_tmpl;
+	my %opt_end_tags;
+	my $elem;
+	my $body;
+	my $doc_fh;
+
+	$doc_tmpl = HTML::Template->new(filename => 'include/document.tmpl');
+
+	# Don't omit any end tags.
+	%opt_end_tags = map([$_ => 0], %HTML::Element::optionalEndTag);
+
+	# Get HTML text of all children of the "body" element.
+	foreach $elem (@{$self->{'tree_body'}}[0]->content_list()) {
+		# It's safe to assume (ref($elem) eq 'HTML::Element').
+		$body .= $elem->as_HTML('<>&', '', \%opt_end_tags) . "\n";
+	}
+
+	$doc_tmpl->param(IS_INDEX => ($self->{'type'} eq 'index'));
+
+	$doc_tmpl->param(BOOK_TITLE => $self->{'book'}->title());
+	$doc_tmpl->param(TITLE => $self->{'title'});
+	$doc_tmpl->param(CHAPT_TITLE => $self->full_title());
+
+	if (defined($self->{'prev'})) {
+		$doc_tmpl->param(PREV_LINK => $self->{'prev'}->file() . '.html');
+		$doc_tmpl->param(PREV_TITLE => $self->{'prev'}->title());
+	} else {
+		$doc_tmpl->param(PREV_LINK => undef);
+		$doc_tmpl->param(PREV_TITLE => undef);
+	}
+	if (defined($self->{'next'})) {
+		$doc_tmpl->param(NEXT_LINK => $self->{'next'}->file() . '.html');
+		$doc_tmpl->param(NEXT_TITLE => $self->{'next'}->title());
+	} else {
+		$doc_tmpl->param(NEXT_LINK => undef);
+		$doc_tmpl->param(NEXT_TITLE => undef);
+	}
+
+	$doc_tmpl->param(BODY => $body);
+
+	open($doc_fh, '>', $self->file_path() . '.html')
+		or Carp::croak('Cannot open "' . $self->{'file'} . '" destination document');
+	$doc_tmpl->output(print_to => $doc_fh);
+	close($doc_fh);
+}
+
+1;
diff --git a/lib/Text/MarkdownBook/Document/txt.pm b/lib/Text/MarkdownBook/Document/txt.pm
new file mode 100644
index 0000000..f2a8a77
--- /dev/null
+++ b/lib/Text/MarkdownBook/Document/txt.pm
@@ -0,0 +1,46 @@
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use Text::MarkdownBook::Document;
+use Carp;
+
+package Text::MarkdownBook::Document::txt;
+
+our @ISA = qw(Text::MarkdownBook::Document);
+
+sub output
+{
+	my ($self) = @_;
+	my $out_fh;
+
+	open($out_fh, '>',
+		$self->{'book'}->dir() . '/' . $self->{'file'} . '.txt')
+		or Carp::croak('Cannot open "' . $self->{'file'} .
+		'" destination document');
+
+	# Print document title.
+	print($out_fh $self->{'title'} . "\n" .
+		'*' x length($self->{'title'}) . "\n\n\n");
+
+	# Print document text with macro substitutions.
+	print($out_fh $self->{'book'}->subst_macros($self->{'source_text'}));
+
+	close($out_fh);
+}
+
+1;
diff --git a/lib/Text/MarkdownBook/HTMLTree.pm b/lib/Text/MarkdownBook/HTMLTree.pm
new file mode 100644
index 0000000..6080475
--- /dev/null
+++ b/lib/Text/MarkdownBook/HTMLTree.pm
@@ -0,0 +1,44 @@
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+use HTML::Element;
+
+package Text::MarkdownBook::HTMLTree;
+
+sub find_elements_by_tag_names
+{
+	my ($elem, @tagnames) = @_;
+
+	my @list = $elem->content_list();
+	my $tag;
+	my @retlist = ();
+
+	foreach (@list) {
+		if (ref($_) ne 'HTML::Element') {
+			next;
+		}
+		$tag = $_->tag();
+		if (grep($_ eq $tag, @tagnames)) {
+			push(@retlist, $_);
+		}
+	}
+
+	return @retlist;
+}
+
+1;
diff --git a/lib/Text/MarkdownBook/Section.pm b/lib/Text/MarkdownBook/Section.pm
new file mode 100644
index 0000000..75e13b8
--- /dev/null
+++ b/lib/Text/MarkdownBook/Section.pm
@@ -0,0 +1,67 @@
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+package Text::MarkdownBook::Section;
+
+sub new
+{
+	my ($class, $doc, $lev, $num, $id, $title) = @_;
+	my $self;
+
+	$class = ref($class) || $class;
+	$self = {};
+	bless($self, $class);
+
+	$self->{'document'} = $doc;
+	$self->{'level'} = $lev;
+	$self->{'number'} = $num;
+	$self->{'id'} = $id;
+	$self->{'title'} = $title;
+
+	return $self;
+}
+
+sub level
+{
+	my ($self) = @_;
+
+	return $self->{'level'};
+}
+
+sub number
+{
+	my ($self) = @_;
+
+	return $self->{'number'};
+}
+
+sub id
+{
+	my ($self) = @_;
+
+	return $self->{'id'};
+}
+
+sub title
+{
+	my ($self) = @_;
+
+	return $self->{'title'};
+}
+
+1;