diff options
Diffstat (limited to 'omptagger')
| -rwxr-xr-x | omptagger | 502 |
1 files changed, 13 insertions, 489 deletions
@@ -2,427 +2,18 @@ # # omptagger # http://github.com/omp/omptagger +# Modify and display metadata of audio files. # # Copyright 2007-2010 David Vazgenovich Shakaryan <dvshakaryan@gmail.com> # Distributed under the terms of the GNU General Public License v3. # See http://www.gnu.org/licenses/gpl.txt for the full license text. -# -# Program for modifying and displaying tags for various formats of audio files. -# Behaviour changes between acting as a wrapper tool or using a library, based -# on the format of the file being worked with. -# -# Dependencies: -# * ruby http://www.ruby-lang.org/ -# * flac http://flac.sourceforge.net/ -# * id3lib-ruby http://id3lib-ruby.rubyforge.org/ -# * vorbis-tools http://www.vorbis.com/ require 'getoptlong' -require 'id3lib' - -# Define colours. -def colred(str) return "\e[31m#{str}\e[0m" end -def colgrn(str) return "\e[32m#{str}\e[0m" end -def colyel(str) return "\e[33m#{str}\e[0m" end -def colcyn(str) return "\e[36m#{str}\e[0m" end - -# Escape single quotes for use within single quotes in shell commands. -def esc(str) - # Substitute all instances of ' with '\''. - return str.gsub("'", "'\\\\''") -end - -# Output a tag name and value. -def output(tag, val) - # Alter capitalisation of tag name for aesthetic purposes. - tag = tag.downcase.capitalize unless tag == 'ISRC' - tag = 'TrackNumber' if tag == 'Tracknumber' - - # The number statically defined here should be two greater than the length of - # the longest possible tag name. - puts ' ' + colcyn(tag) + ' ' * (14 - tag.length) + val -end - -# Split a filename based on a naming scheme. An asterisk is a wildcard key. -def schemesplit(scheme, file, keystr) - # Determine keys and values using a regular expression. - regexp = /\A#{Regexp.escape(scheme).gsub(/%([#{keystr}]|\\\*)/, '(.*?)')}\Z/ - keys = scheme.scan(regexp).flatten - vals = file.scan(regexp).flatten - - raise 'Filename does not match naming scheme.' if keys.length != vals.length - - # Map scheme keys to values. - result = Hash.new - keys.zip(vals).each do |key, val| - result[key[1,1]] = val unless key == '%*' - end - - return result -end - -# Display help information. -def help - options = [ - ['--view -v', 'View all tags'], - ['--view-tag -t', 'View a tag'], - ['--set-tag -s', 'Set a tag'], - ['--remove -r', 'Remove all tags'], - ['--remove-tag -d', 'Remove a tag'], - ['--generate -g', 'Generate tags based on filename'], - ['--rename -m', 'Generate filename based on tags'], - ['--scheme -n', 'Specify a file naming scheme'], - ['--pretend -p', 'Do not make any actual changes'], - ['--no-colour -c', 'Disable use of colour in output'], - ['--list -l', 'Display list of available tags'], - ['--help -h', 'Display help information']] - notes = [ - 'The default file naming scheme is Artist - Title.', - 'Schemes must be specified prior to actions that use them.', - 'Underscores in filenames are converted to spaces in tags.', - 'Backslashes in filenames are converted to forward slashes in tags.'] - - puts colyel('Usage:') + ' omptagger ' + colgrn('[options] [files]') - puts - puts colyel('Options:') - options.each do |option, description| - puts ' ' + colgrn(option) + ' ' + description - end - puts - puts colyel('Notes:') - notes.each do |note| - puts ' ' + colgrn('*') + ' ' + note - end - exit -end - -# Display list of available tags. -def list - puts '┌───────────────────────────────────┐', - '│ Keys Vorbis Comments ID3 Tags │', - '├───────────────────────────────────┤', - '│ %a Artist Artist │', - '│ %b Album Album │', - '│ %d Date Year │', - '│ %n TrackNumber Track │', - '│ %t Title Title │', - '│ %* Wildcard Wildcard │', - '├───────────────────────────────────┤', - '│ Contact │', - '│ Copyright │', - '│ Description │', - '│ Genre │', - '│ ISRC │', - '│ License │', - '│ Location │', - '│ Organization │', - '│ Performer │', - '│ Version │', - '└───────────────────────────────────┘' - exit -end - -# Class for Vorbis comments; used by FLAC and Vorbis files. -class VorbisComments - # Possible tags. - TAGS = ['ALBUM', - 'ARTIST', - 'CONTACT', - 'COPYRIGHT', - 'DATE', - 'DESCRIPTION', - 'GENRE', - 'ISRC', - 'LICENSE', - 'LOCATION', - 'ORGANIZATION', - 'PERFORMER', - 'TITLE', - 'TRACKNUMBER', - 'VERSION'] - - # Map scheme keys to tags. - KEYS = Hash['a' => 'ARTIST', - 'b' => 'ALBUM', - 'd' => 'DATE', - 'n' => 'TRACKNUMBER', - 't' => 'TITLE'] - - def initialize(file) - @file = @origfile = file - @tags = Hash.new - @write = false - - TAGS.each do |tag| - val = read_tag(tag) - next if val.empty? - - @tags[tag] = val.gsub(/^#{tag}=/i, '').split("\n") - end - end - - def view - raise 'No tags are set.' if @tags.empty? - - @tags.each do |tag, val| - val.each do |val| - output(tag, val) - end - end - end - - def view_tag(arg) - tag = arg.upcase - raise tag + ' is not a valid tag.' unless TAGS.include?(tag) - - val = @tags[tag] - raise tag + ' tag is not set.' if val.nil? - val.each do |val| - output(tag, val) - end - end - - def set_tag(arg) - arg = arg.split('=', 2) - tag = arg.shift.upcase - raise tag + ' is not a valid tag.' unless TAGS.include?(tag) - - @tags[tag] = arg - view_tag(tag) - - @write = true - end - - def remove - raise 'No tags are set.' if @tags.empty? - - @tags.clear - @write = true - end - - def remove_tag(arg) - tag = arg.upcase - raise tag + ' is not a valid tag.' unless TAGS.include?(tag) - raise tag + ' tag is not set.' unless @tags.include?(tag) - - @tags.delete(tag) - @write = true - end - - def generate(scheme) - val = File.basename(@file, File.extname(@file)) - val = val.gsub('_', ' ').gsub('\\', '/') - scheme = scheme.gsub('_', ' ').gsub('\\', '/') - scheme = schemesplit(scheme, val, KEYS.keys.join) - - tagval = Array.new - - scheme.each do |tag, val| - tagval << [KEYS[tag], val] - end - - tagval.each do |arr| - @tags[arr.first] = [arr.last] - view_tag(arr.first) - end - - @write = true - end - - def rename(scheme) - file = scheme - - file.scan(/%([#{KEYS.keys.join}])/).flatten.each do |key| - raise 'Missing ' + KEYS[key] + ' tag.' unless @tags[KEYS[key]] - file = file.gsub('%' + key, @tags[KEYS[key]].first) - end - - file = File.dirname(@file) + '/' + file.gsub('/', '_') + - File.extname(@file) - - raise 'Generated filename and current filename are identical.' if - File.basename(@file) == File.basename(file) - - output('FILENAME', file.sub(/^\.\//, '')) - raise 'File with generated name already exists.' if File.exist?(file) - - @file = file - end - - def finalise - if @write - clear_tags - - @tags.each do |tag, val| - val.each do |val| - write_tag(tag, val) - end - end - end - - File.rename(@origfile, @file) unless @file == @origfile - end -end - -# Subclass of VorbisComments containing methods unique to FLAC files. -class FLAC < VorbisComments - def read_tag(tag) - %x(metaflac --show-tag=#{tag} -- '#{esc(@origfile)}').chomp - end - - def clear_tags - %x{metaflac --remove-all-tags -- '#{esc(@origfile)}'} - end - - def write_tag(tag, val) - %x{metaflac --set-tag=#{tag}='#{esc(val)}' -- '#{esc(@origfile)}'} - end -end - -# Subclass of VorbisComments containing methods unique to Vorbis files. -class Vorbis < VorbisComments - def read_tag(tag) - %x(vorbiscomment -l -- '#{esc(@origfile)}').scan(/#{tag}=.*/i).join("\n") - end - - def clear_tags - %x{vorbiscomment -w -t '' -- '#{esc(@origfile)}' 2>/dev/null} - end - - def write_tag(tag, val) - %x{vorbiscomment -a -t #{tag}='#{esc(val)}' -- '#{esc(@origfile)}'} - end -end - -# Class for ID3 tags; used by MP3 files. -class ID3 - # Possible tags. - TAGS = Hash['ALBUM' => :TALB, - 'ARTIST' => :TPE1, - 'COMMENT' => :COMM, - 'TITLE' => :TIT2, - 'TRACK' => :TRCK, - 'YEAR' => :TYER] - - # Map scheme keys to tags. - KEYS = Hash['a' => 'ARTIST', - 'b' => 'ALBUM', - 'd' => 'YEAR', - 'n' => 'TRACK', - 't' => 'TITLE'] - - def initialize(file) - @file = @origfile = file - @tags = ID3Lib::Tag.new(@file) - @write = false - end - - def view - raise 'No tags are set.' if @tags.empty? - - TAGS.each do |tag, frame| - val = @tags.frame_text(frame) - output(tag, val) unless val.nil? - end - end - - def view_tag(arg) - tag = arg.upcase - raise tag + ' is not a valid tag.' unless TAGS.has_key?(tag) - - val = @tags.frame_text(TAGS[tag]) - raise tag + ' tag is not set.' if val.nil? - - output(tag, val) - end - - def set_tag(arg) - arg = arg.split('=', 2) - tag = arg.shift.upcase - raise tag + ' is not a valid tag.' unless TAGS.has_key?(tag) - - @tags.set_frame_text(TAGS[tag], arg.to_s) - view_tag(tag) - - @write = true - end - - def generate(scheme) - val = File.basename(@file, File.extname(@file)) - val = val.gsub('_', ' ').gsub('\\', '/') - scheme = scheme.gsub('_', ' ').gsub('\\', '/') - scheme = schemesplit(scheme, val, KEYS.keys.join) - - tagval = Array.new - - scheme.each do |tag, val| - tagval << [KEYS[tag], val] - end - - tagval.each do |arr| - @tags.set_frame_text(TAGS[arr.first], arr.last) - view_tag(arr.first) - end - - @write = true - end - - def remove - raise 'No tags are set.' if @tags.empty? - - @tags.clear - @write = true - end - - def remove_tag(arg) - tag = arg.upcase - raise tag + ' is not a valid tag.' unless TAGS.has_key?(tag) - raise tag + ' tag is not set.' if @tags.frame_text(TAGS[tag]).nil? - - @tags.remove_frame(TAGS[tag]) - @write = true - end - - def rename(scheme) - file = scheme - - file.scan(/%([#{KEYS.keys.join}])/).flatten.each do |key| - raise 'Missing ' + KEYS[key] + ' tag.' if - @tags.frame_text(TAGS[KEYS[key]]).nil? - - file = file.gsub('%' + key, @tags.frame_text(TAGS[KEYS[key]])) - end - - file = File.dirname(@file) + '/' + file.gsub('/', '_') + - File.extname(@file) - - raise 'Generated filename and current filename are identical.' if - File.basename(@file) == File.basename(file) - - output('FILENAME', file.sub(/^\.\//, '')) - raise 'File with generated name already exists.' if File.exist?(file) - - @file = file - end - - def finalise - if @write - if @tags.empty? or (@tags.length == 1 and @tags.frame_text(:TLEN)) - @tags.strip! - else - @tags.update! - end - end - - File.rename(@origfile, @file) unless @file == @origfile - end -end - -# Parse options. actions = Array.new options = Array.new -scheme = '%a - %t' +scheme = '%a - %t' + GetoptLong.new( ['--view', '-v', GetoptLong::NO_ARGUMENT], ['--view-tag', '-t', GetoptLong::REQUIRED_ARGUMENT], @@ -433,88 +24,21 @@ GetoptLong.new( ['--rename', '-m', GetoptLong::NO_ARGUMENT], ['--scheme', '-n', GetoptLong::REQUIRED_ARGUMENT], ['--pretend', '-p', GetoptLong::NO_ARGUMENT], - ['--no-colour', '-c', GetoptLong::NO_ARGUMENT], ['--list', '-l', GetoptLong::NO_ARGUMENT], ['--help', '-h', GetoptLong::NO_ARGUMENT] -).each do |opt, arg| - opt = opt.sub(/^--/, '').gsub('-', '_').intern +).each do |option, argument| + option = option.delete('-').intern - case opt - when :no_colour - def colred(str) return str end - def colgrn(str) return str end - def colyel(str) return str end - def colcyn(str) return str end + case option when :scheme - scheme = arg - when :pretend, :help, :list - options << opt - when :view_tag, :set_tag, :remove_tag - actions << [opt, arg] + scheme = argument + when :help, :list, :pretend + options << option + when :viewtag, :settag, :removetag + actions << [option, argument] when :generate, :rename - actions << [opt, scheme] + actions << [option, scheme] else - actions << [opt] - end -end - -# Deal with help and list options. Set a default action if one was not -# specified. Display error if an action was specified, but no arguments are -# present. -if options.include?(:help) - help -elsif options.include?(:list) - list -elsif actions.empty? and ARGV.empty? - help -elsif actions.empty? - actions = [[:view]] -elsif ARGV.empty? - puts colred('ERROR:') + ' No files specified.' -end - -# Treat each argument as a file. -ARGV.each do |file| - # Continue with next file if an error is raised. - begin - # Output filename and verify that file exists. - puts colyel(file) - raise 'File does not exist.' unless File.exist?(file) - - # Determine file format. - case File.extname(file).downcase - when '.flac' - track = FLAC.new(file) - when '.ogg' - track = Vorbis.new(file) - when '.mp3' - track = ID3.new(file) - else - raise 'File extension not recognised.' - end - - # Run specified actions. - actions.each do |action| - # Continue with next action if an error is raised. - begin - # Output action name and arguments. - puts ' ' + colgrn('Action: ' + action.join(' ')) - - # Run action. - case action.first - when :view, :remove - track.send(action.first) - when :view_tag, :set_tag, :remove_tag, :generate, :rename - track.send(action.first, action.last) - end - rescue RuntimeError => message - puts ' ' + colred('ERROR:') + ' ' + message - end - end - - # Finalise changes. - track.finalise unless options.include?(:pretend) - rescue RuntimeError => message - puts ' ' + colred('ERROR:') + ' ' + message + actions << option end end |