package Iotta::Input::NavGen;
use strict;
require Iotta::Elem;
our @ISA = ("Iotta::Elem");

sub trim {
	my $i = shift;
	$i =~ s/^[ \t\n]+//;
	$i =~ s/[ \t\n]+$//;
	return $i;
}

sub run {
	my $self = shift;
	my $m = shift;
	my $d = shift;
	$self->next->run ($m, $d) if ($self->next);
	push @{$self->files}, $m;
	return 0;
}

sub setup {
	my $s = shift;
	my $o = shift;
	#$s->chain->mod_creat ("test");
	$s->categ ($s->chain->mod_creat ($$o{categorizer}));
}

sub finish {
	my $s = shift;
	# build index list using categorizer
	my $indexes = $s->categ->sort ($s->files);
	# format the indexes into text files and process these
	for my $a (@$indexes) {
		my $d;
		for (@{$$a{files}}) {
			$d .= "L ".$$_{relname}."\n";
			$d .= "T ".$$_{title}."\n\n";
		}
		$$a{format} = "index";
		$$a{top} = '.';
		$s->next->run ($a, $d) if ($s->next);
	}
	my %sidx;
	my $d;
	for (@$indexes) {
		$d .= "L ".$$_{relname}."\n";
		$d .= "T ".$$_{title}."\n\n";
	}
	$sidx{format} = "index";
	$sidx{input} = "categories";
	$sidx{title} = "category index";
	$sidx{top} = '.';
	$s->next->run (\%sidx, $d) if ($s->next);
}

sub initialize {
	my $self = shift;
	my @files;
	$self->SUPER::initialize (@_);
	$self->{files} = \@files;
	$self->{categ} = 0;
}

1;