#!/usr/bin/perl -w
# File: rename-mp3s, v0.01
# Purpose: Rename a set of incorrectly named MP3 files based on the ID3 tags
# Synopsis: rename-mp3s <filelist>
# Author: Bill Jonas <bill@billjonas.com>
#
# Copyright (C) 2000 Bill Jonas
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
# An electronic copy of the GPL is available at
# <http://www.gnu.org/copyleft/gpl.html>.

use strict;
use MPEG::MP3Info;

defined @ARGV || die "Usage: $0 <filelist>\n";

my $file;
my $tag;
my $title;
my $artist;
my $newfilename;
my $count = 0;

foreach $file (@ARGV) {
	$tag = get_mp3tag($file);
	$artist = $tag->{ARTIST};
	$title = $tag->{TITLE};
	if (defined $artist && defined $title ) {
		$artist =~ tr/ /_/;
		$title =~ tr/ /_/;
		$newfilename = $artist . "-" . $title . ".mp3";
		unless (-e $newfilename) {
			print "Renaming $file to $newfilename\n";
			rename $file, $newfilename and $count++ or warn "Couldn't rename $file: $!\n";
		}
	}
}
print "$count files successfully renamed!\n";