#!/usr/bin/perl

# separate frontmatter pieces from mainmatter

use warnings;
use strict;

use Path::Tiny;
use HTML::HTML5::Entities;

my $infile = shift;
my $outfile = shift || $infile;

$_ = path($infile)->slurp_utf8;

s|^((?:.*?\n)?)(= Preface(?:(?!\n=).)*\n)(=.*)$|$1$3|s;
path('preface.mw')->spew_utf8($2);

s|^((?:.*?\n)?)(= Foreword(?:(?!\n=).)*\n)(=.*)$|$1$3|s;
path('foreword.mw')->spew_utf8($2);

s|^((?:.*?\n)?)(= Copyright(?:(?!\n=).)*\n)(=.*)$|$1$3|s;

s|^((?:.*?\n)?)(= Table of Contents(?:(?!\n=).)*\n)(=.*)$|$1$3|s;

path($outfile)->spew_utf8($_);

1;