From 7863497dde842b1ab30a7a74c76f150a8424d74b Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Sun, 12 Aug 2012 14:26:02 -0400
Subject: Support arbitrary loading of format modules.

---
(limited to 'scripts')

diff --git a/scripts/MarkdownBook/Book.pm b/scripts/MarkdownBook/Book.pm
index f942803..572fb53 100644
--- a/scripts/MarkdownBook/Book.pm
+++ b/scripts/MarkdownBook/Book.pm
@@ -30,17 +30,14 @@ sub new
 	$self = {};
 	bless($self, $class);
 
-	if ($format eq 'html') {
-		use MarkdownBook::Document::HTML;
-		$self->{'format'} = 'html';
-		$self->{'format_mod'} = 'HTML';
-	} elsif ($format eq 'txt') {
-		use MarkdownBook::Document::Txt;
-		$self->{'format'} = 'txt';
-		$self->{'format_mod'} = 'Txt';
-	} else {
-		croak('Unsupported format "' . $format . '"');
+	unless ($format =~ m/^[a-z]+/) {
+		Carp::croak('Invalid format "' . $format . '"');
 	}
+	eval {
+		require 'MarkdownBook/Document/' . $format . '.pm';
+		1;
+	} or Carp::croak('Unsupported format "' . $format . '"');
+	$self->{'format'} = $format;
 
 	$self->{'dir'} = $dir;
 	$self->{'docs'} = [];
@@ -96,7 +93,7 @@ sub _get_document_module
 {
 	my ($self) = @_;
 
-	return 'MarkdownBook::Document::' . $self->{'format_mod'};
+	return 'MarkdownBook::Document::' . $self->{'format'};
 }
 
 sub create_documents
diff --git a/scripts/MarkdownBook/Document/HTML.pm b/scripts/MarkdownBook/Document/html.pm
index 2852e8e..5ee1e79 100644
--- a/scripts/MarkdownBook/Document/HTML.pm
+++ b/scripts/MarkdownBook/Document/html.pm
@@ -23,7 +23,7 @@ use Text::Markdown;
 use HTML::TreeBuilder;
 use HTML::Template;
 
-package MarkdownBook::Document::HTML;
+package MarkdownBook::Document::html;
 
 our @ISA = qw(MarkdownBook::Document);
 
diff --git a/scripts/MarkdownBook/Document/Txt.pm b/scripts/MarkdownBook/Document/txt.pm
index cf65d92..3ffd9cd 100644
--- a/scripts/MarkdownBook/Document/Txt.pm
+++ b/scripts/MarkdownBook/Document/txt.pm
@@ -19,7 +19,7 @@ use warnings;
 use MarkdownBook::Document;
 use Carp;
 
-package MarkdownBook::Document::Txt;
+package MarkdownBook::Document::txt;
 
 our @ISA = qw(MarkdownBook::Document);
 
--
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