info2meta - Reads metadata information as downloaded by cd-info and writes it to flac files. See https://gist.github.com/ixxra/9044268 too

info2meta

#!/usr/bin/env ruby
#
#
#info2meta
#
#Reads metadata information as downloaded by cd-info and writes it to flac files.
#I use this script together with https://gist.github.com/ixxra/9044268 to rip my 
#cds into flac format.
#

require 'shellwords'

tracks = []

def new_track()
	{
        :TRACKNUMBER => 0,
        :TITLE => '', 
        :ARTIST => '', 
        :ALBUM => '',
        :GENRE => '',
        :COMMENTS => '',
        :FREEDB => ''
    }
end

def fname_from_tracknumber(n)
	sprintf "track%02d.flac", n    
end

def shell_escape(s)
    ShellWords.escape(s)
end

def metaflac_args(t)

	t.map{|k, v| "--set-tag=#{k}=#{Shellwords.escape(v)}"}.join(' ')
end

GENRE = ''
ARTIST = ''
ALBUM = ''
FREEDB = ''

t = nil

File.open('disc.info', 'r') do |f|
	f.each_line do |line|
		if /  Track/ =~ line
            if not t.nil?
                tracks.push t
            end
            t = new_track
            t[:GENRE] = GENRE
            t[:ARTIST] = ARTIST
            t[:ALBUM] = ALBUM
            t[:FREEDB] = FREEDB 
        elsif /Disc ID: (\w+)/ =~ line
            FREEDB = $1
        elsif /Music genre: '(.+)'/ =~ line
            GENRE = $1
        elsif /Artist: '(.+)'/ =~ line
            ARTIST = $1
		elsif /Title: '(.+)'/ =~ line
            ALBUM = $1
        end
        if /    number: (\d\d?)/ =~ line
            t[:TRACKNUMBER] = $1
        elsif /    title: '(.*)'/ =~ line
            t[:TITLE] = $1
        elsif /    artist: '(.*)'/ =~ line
            t[:ARTIST] = $1
        elsif /    extended data: '(.*)'/ =~ line
            if $1 != 'NULL'
            	t[:COMMENTS] = $1
            end
        end
		
	end
end

tracks.push t

tracks.each do |t|
    `metaflac #{metaflac_args t} #{fname_from_tracknumber t[:TRACKNUMBER]}`
end