Class: GotMP3

Inherits:
Object
  • Object
show all
Defined in:
lib/got_mp3.rb

Instance Method Summary collapse

Constructor Details

#initialize(dir: '.', debug: false) ⇒ GotMP3

Returns a new instance of GotMP3.



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# File 'lib/got_mp3.rb', line 11

def initialize(dir: '.', debug: false)
  @dir, @debug = dir, debug
end

Instance Method Details

#add_jpg ⇒ Object

Adds album art to each MP3 file

Example usage:

gotmp3 = GotMP3.new(dir: '/tmp/tree/Da Fustra - Over The Waves To Shetland')
gotmp3.add_jpg



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# File 'lib/got_mp3.rb', line 22

def add_jpg()

  find_by_ext('.jpg').each do |directory, img_filename|

    puts 'add_jpg to directory: ' + directory.inspect if @debug
    add_image directory, img_filename
  end

end

#add_titles ⇒ Object

Adds a track title to each MP3 file

Example usage:

gotmp3 = GotMP3.new(dir: '/tmp/tree/Da Fustra - Over The Waves To Shetland')
gotmp3.add_titles



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# File 'lib/got_mp3.rb', line 38

def add_titles()

  find_by_ext('.txt').each do |directory, txt_filename|
    add_tracktitles directory, txt_filename
  end

end

#compile(source_directory: '', target_directory: '') ⇒ Object

copy all MP3 directories through the category file-directory stucture



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# File 'lib/got_mp3.rb', line 48

def compile(source_directory: '', target_directory: '')

  raise 'target_directory cannot be empty' if target_directory.empty?

  find_by_ext('.txt').each do |directory, _ |

    Dir[File.join(directory, '*.txt')].each do |txt_filename|

      album = File.join(source_directory,
                        File.basename(txt_filename).sub(/\.txt$/,''))
      library_dir = File.join(target_directory, File.basename(directory))
      FileUtils.mkdir_p library_dir

      if @debug then
        puts 'copying from:' + album.inspect
        puts 'copying to: ' + library_dir.inspect
      end

      puts 'copying ' + album + ' ...'
      FileUtils.cp_r album, library_dir, remove_destination: true

    end
  end

end

#consolidate_txt(target_directory: '') ⇒ Object 



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# File 'lib/got_mp3.rb', line 74

def consolidate_txt(target_directory: '')

  raise 'target_directory cannot be empty' if target_directory.empty?

  find_by_ext('.mp3').each do |directory, _ |

    puts 'write_titles() - directory: ' + directory.inspect if @debug
    txt_filename = Dir[File.join(directory, '*.txt')].first

    next unless txt_filename

    target_file = File.basename(directory)

    FileUtils.cp txt_filename, File.join(target_directory,
                                         target_file + '.txt')

  end

end

#each_mp3_file(directory = '.', &blk) ⇒ Object 



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# File 'lib/got_mp3.rb', line 94

def each_mp3_file(directory='.', &blk)

  puts 'each_mp3 - directory: ' + directory.inspect if @debug
  found = Dir[File.join(directory, "*.mp3")].sort_by { |x| File.mtime(x) }
  puts 'each_mp3 - found: ' + found.inspect if @debug

  found.reverse.each.with_index do |mp3_filepath, i|

    puts 'each_mp3 - mp3_filepath: ' + mp3_filepath.inspect if @debug

    next unless File.exists? mp3_filepath

    blk.call(mp3_filepath, i )

  end

end

#go ⇒ Object

Adds the album art, track title, renames the MP3 file, and adds a playlist



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# File 'lib/got_mp3.rb', line 114

def go()

  find_by_ext('.mp3').each do |directory, _ |

    # find the image file
    img_filename = Dir[File.join(directory, '*.jpg')].first
    puts 'img_filename: ' + img_filename.inspect if @debug

    # find the text file
    txt_filename = Dir[File.join(directory, '*.txt')].first
    next unless txt_filename

    add_image_and_titles(directory, img_filename, txt_filename)

  end

end

#rename ⇒ Object

rename 1 or more mp3 files within 1 or more file directories

example usage:

rename() {|mp3file| mp3files.sub(/Disc \d - /,'')}
rename() {|mp3file| mp3file.sub(/Disc \d - (\d+) - /,'\1. ')}



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# File 'lib/got_mp3.rb', line 138

def rename()

  each_mp3_file do |mp3_filepath|

    mp3_directory = File.dirname(mp3_filepath)
    mp3_filename = File.basename(mp3_filepath)

    newname = yield(mp3_filename)
    File.rename(mp3_filepath, File.join(mp3_directory, newname))

  end

end

#write_titles ⇒ Object 



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# File 'lib/got_mp3.rb', line 152

def write_titles()

  puts 'inside write_titles()' if @debug

  find_by_ext('.mp3').each do |directory, _ |

    puts 'write_titles() - directory: ' + directory.inspect if @debug
    txt_filename = Dir[File.join(directory, '*.txt')].first

    next if txt_filename

    tracks = []

    each_mp3_track(directory) do |mp3, trackno, mp3_filepath|

      tracks << OpenStruct.new({
        title: mp3.tag.title,
        artist: mp3.tag.artist,
        album: mp3.tag.album,
        album_artist: mp3.tag2['TPE2'],
        disc: mp3.tag2['TPOS'],
        tracknum: mp3.tag.tracknum,
        filename: File.basename(mp3_filepath)
      })

    end

    heading = tracks[0].album_artist + ' - ' + tracks[0].album
    s = "# %s\n\n" % [heading]
    h = tracks.group_by(&:disc)

    body = if h.length == 1 then

      list(tracks)

    else

      "\n" + h.map do |disc, tracks2|
        ("## Disc %d\n\n" % disc) + list(tracks2) + "\n\n"
      end.join("\n")

    end

    File.write File.join(directory, heading + '.txt'), s + body

  end

end