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package MP3::CreateInlayCard; |
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our $VERSION = '0.06'; |
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# $Id: CreateInlayCard.pm 535 2009-02-13 23:26:32Z davidp $ |
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use strict; |
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use warnings; |
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use File::Find::Rule; |
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use Music::Tag; |
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use Cwd; |
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use HTML::Template; |
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=head1 NAME |
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MP3::CreateInlayCard - create a CD inlay label for a directory of MP3 files |
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=head1 SYNOPSIS |
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use MP3::CreateInlayCard; |
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print MP3::CreateInlayCard::create_inlay( |
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{dir => $dir, template => $template}); |
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# $dir is the directory containing the MP3 files. If not specified, we'll |
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# use the current directory. |
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# $template is the filename of a template which HTML::Template should |
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# read and populate. Alternatively, it can be a scalar reference, in which |
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# case it will be taken to be the template contents to use. If it's not |
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# supplied, a simple default built-in template will be used. |
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# If you can't be bothered to write a script to call this module, use |
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# 'makeinlay.pl' distributed with this package, or just do: |
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perl -MMP3::CreateInlayCard -e \ |
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"print MP3::CreateInlayCard(create_inlay({ (see example above) });" |
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# If you're in the directory containing the MP3's, and you want to use the |
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# built-in default template, just supply an empty hashref: |
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perl -MMP3::CreateInlayCard \ |
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-e "print MP3::CreateInlayCard(create_inlay({});" |
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# or, more easily, use the eg/createinlay.pl script supplied with this |
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# module. (Perhaps copy it to somewhere in your path and rename it to |
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# 'createinlay', so you can just change directory into the appropriate |
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# place and type 'createinlay'). |
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=head1 DESCRIPTION |
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Reads a directory of MP3s, and produces a HTML file you can print for a nice |
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"inlay" for a CD case. Useful if you're burning a directory full of MP3s |
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to a CD, and want an inlay label created for you. |
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=cut |
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=head1 FUNCTIONS |
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=over 4 |
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=item create_inlay |
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Go through the specified directory and produce the inlay. |
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Takes a hashref of: |
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=over 4 |
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=item I |
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The directory containing the MP3 files |
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=item I |
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A scalar containing the filename of a template which HTML::Template should |
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read and populate. Alternatively, it can be a scalar reference, in which |
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case it will be taken to be the template contents to use. If it's not |
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supplied, a simple default built-in template will be used. |
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=back |
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=cut |
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sub create_inlay { |
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my $params = shift; |
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if (!$params || ref $params ne 'HASH') { |
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die "create_inlay() not passed hashref of params"; |
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} |
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my $startdir = $params->{dir} || getcwd; |
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if (!-d $startdir) { |
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die "$startdir is not a directory"; |
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} |
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my @files = File::Find::Rule->file()->name('*.mp3')->in($startdir); |
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my $track = 1; |
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my @tracks; |
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# remember which artists and titles we saw, so we can work out whether this |
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# is a compilation of various artists, a complete album by one artist, or |
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# just a random assortment of tracks. |
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my %artists; |
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my %albums; |
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for my $file (@files) { |
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my $tags = Music::Tag->new($file, { quiet => 1 }); |
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$tags->get_tag or warn "Error reading tags from $file" and next; |
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my $length = sprintf('%02d',$tags->secs / 60) . ':' |
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. sprintf('%02d',$tags->secs % 60); |
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push @tracks, { |
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track => $track, |
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title => $params->{prettify} ? |
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_prettify($tags->title()) : $tags->title(), |
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artist => $params->{pretify} ? |
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_prettify($tags->artist()) : $tags->artist(), |
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length => $length, |
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}; |
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$artists{ $tags->artist() }++; |
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$albums{ $tags->album() }++; |
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$track++; |
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} |
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# open the html template (this code is rather crufty, refactor someday) |
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my $template; |
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my $template_opts = { die_on_bad_params => 0 }; |
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if ($params->{template}) { |
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if (ref $params->{template} eq 'SCALAR') { |
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# we've been given the template content: |
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$template = HTML::Template->new( |
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scalarref => $params->{template}, |
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die_on_bad_params => 0 |
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); |
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} else { |
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# it must be the filename of a template to use: |
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if (-e $params->{template}) { |
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$template = HTML::Template->new( |
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filename => $params->{template}, |
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die_on_bad_params => 0 |
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); |
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} else { |
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die "Failed to open $params->{template} $!"; |
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} |
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} |
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} else { |
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# no template supplied, so use our default built-in one: |
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$template = HTML::Template->new( |
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scalarref => \$MP3::CreateInlayCard::default_template, |
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die_on_bad_params => 0 |
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); |
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} |
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if (!$template) { |
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die "Uh-oh.. failed to create HTML::Template"; |
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} |
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# fill in some parameters |
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$template->param(tracks => sort { $a->{track} cmp $b->{track} } \@tracks); |
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$template->param(artist => (scalar keys %artists == 1)? |
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(keys %artists)[0] : 'Various Artists'); |
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$template->param(album => (scalar keys %albums == 1)? |
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(keys %albums)[0] : 'Compilation'); |
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# send the obligatory Content-Type and print the template output |
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return $template->output; |
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} # end of sub create_inlay |
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=back |
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=cut |
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# return a "prettified" version of an artist/title - currently just converts |
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# to title case, might support more options in future. Of course, this isn't |
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# always a good thing, as there are some artist names / song names which are |
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# supposed to be in all capitals, or "officially" should be all in lowercase |
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# etc, and will choke on double-barreled names "Dave Two-Names" or Scottish |
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# names ("Johnny McScottish" or "Old MacDonald"). |
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sub _prettify { join ' ', map { ucfirst $_ } split /\s/, lc shift; } |
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our $default_template = <
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TEMPLATE |
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1; |
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__END__ |