From c0edd7e3b41aa0dcf511718079893a20bcd34127 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Fri, 10 Aug 2012 03:09:38 -0400
Subject: Add post-processing script and modules.

---
(limited to 'scripts/MarkdownBook/Document.pm')

diff --git a/scripts/MarkdownBook/Document.pm b/scripts/MarkdownBook/Document.pm
new file mode 100644
index 0000000..f9b9a13
--- /dev/null
+++ b/scripts/MarkdownBook/Document.pm
@@ -0,0 +1,180 @@
+# 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 MarkdownBook::HTMLTree;
+use HTML::TreeBuilder;
+
+package MarkdownBook::Document;
+
+sub new
+{
+	my ($class, $book, $file, $id, $title) = @_;
+	my $self;
+
+	$class = ref($class) || $class;
+	$self = {};
+	bless($self,$class);
+	$self->{'book'} = $book;
+	$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 $old;
+}
+
+sub file
+{
+	my ($self, $file) = @_;
+	my $old = $self->{'file'};
+
+	$self->{'file'} = $file if defined($file);
+
+	return $old;
+}
+
+sub file_path
+{
+	my ($self) = @_;
+
+	return $self->{'book'}->dir() . '/' . $self->{'file'};
+}
+
+sub title
+{
+	my ($self, $title) = @_;
+	my $old = $self->{'title'};
+
+	$self->{'title'} = $title if defined($title);
+
+	return $old;
+}
+
+sub prev
+{
+	my ($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 $old;
+}
+
+sub parse_html
+{
+	my ($self) = @_;
+	my $file = $self->{'book'}->dir() . '/' . $self->{'file'} . '.html.in';
+
+	$self->{'tree'} = HTML::TreeBuilder->new();
+	$self->{'tree'}->parse_file($file);
+}
+
+sub number_sections
+{
+	my ($self) = @_;
+
+	my @headers;
+	my $header;
+	my @secnums = (0, 0);
+	my $curlev = -1;
+	my $newlev;
+	my $secstr;
+	my @children;
+	my $sectitle;
+	my $secid;
+
+	@{$self->{'tree_body'}} = MarkdownBook::HTMLTree::find_elements_by_tag_names(
+		$self->{'tree'}, ('body'));
+	@headers = MarkdownBook::HTMLTree::find_elements_by_tag_names(
+		@{$self->{'tree_body'}}[0], ('h1', 'h2'));
+
+	foreach $header (@headers) {
+
+		# Calculate section number.
+		$newlev = $header->tag();
+		$newlev =~ s/^h(\d)$/$1/;
+		if ($newlev != $curlev) {
+			foreach (@secnums[$newlev .. $#secnums]) {
+				$_ = 0;
+			}
+		}
+		$curlev = $newlev;
+		++$secnums[$newlev - 1];
+		$secstr = join('.', @secnums);
+		$secstr =~ s/(\.0)*$//;
+
+		MarkdownBook::HTMLTree::each_text(sub {
+
+				# Prefix section title with section number.
+				my $sectitle = $_[1];
+				$sectitle =~ s/^([^\[]+)[ ]*\[[^\]]+\]$/$_[2].$secstr $1/;
+
+				# Set "id" attribute.
+				if ($_[1] =~ m/^[^\[\]]*\[([^\]]+)\][^\[\]]*$/) {
+					my $secid = $_[1];
+					$secid =~ s/^[^\[\]]*\[([^\]]+)\][^\[\]]*$/$1/;
+					${$_[0]}->attr('id', $secid);
+				}
+
+				# Set section title.
+				$_[1] = $sectitle;
+
+			}, $header, $self->{'id'});
+
+	}
+}
+
+sub output
+{
+	my ($self) = @_;
+
+	my $elem;
+	my %opt_end_tags;
+	my $out;
+
+	# Don't omit any end tags.
+	%opt_end_tags = map([$_ => 0], %HTML::Element::optionalEndTag);
+
+	foreach $elem (@{$self->{'tree_body'}}[0]->content_list()) {
+		# It's safe to assume (ref($elem) eq 'HTML::Element').
+		$out .= $elem->as_HTML('<>&', '', \%opt_end_tags) . "\n";
+	}
+
+	return $out;
+}
+
+1;
--
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