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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| module AlacIt | ||
| class Cuesheet | ||
| attr_reader :cuesheet, :songs, :track_duration | ||
|
|
||
| def initialize(cuesheet, track_duration = nil) | ||
| @cuesheet = cuesheet | ||
| @reg = { | ||
| :track => %r(TRACK (\d{1,3}) AUDIO), | ||
| :performer => %r(PERFORMER "(.*)"), | ||
| :title => %r(TITLE "(.*)"), | ||
| :index => %r(INDEX \d{1,3} (\d{1,3}):(\d{1,2}):(\d{1,2})) | ||
| } | ||
| @track_duration = AlacIt::Index.new(track_duration) if track_duration | ||
| end | ||
|
|
||
| def parse! | ||
| @songs = parse_titles.map{ |title| {:title => title} } | ||
| @songs.each_with_index do |song, i| | ||
| song[:performer] = parse_performers[i] | ||
| song[:track] = parse_tracks[i] | ||
| song[:index] = parse_indices[i] | ||
| end | ||
| raise AlacIt::InvalidCuesheet.new('Cuesheet is malformed!') unless valid? | ||
| calculate_song_durations! | ||
| true | ||
| end | ||
|
|
||
| def position(value) | ||
| index = Index.new(value) | ||
| return @songs.first if index < @songs.first[:index] | ||
| @songs.each_with_index do |song, i| | ||
| return song if song == @songs.last | ||
| return song if between(song[:index], @songs[i + 1][:index], index) | ||
| end | ||
| end | ||
|
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||
| def valid? | ||
| @songs.all? do |song| | ||
| [:performer, :track, :index, :title].all? do |key| | ||
| song[key] != nil | ||
| end | ||
| end | ||
| end | ||
|
|
||
| private | ||
|
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| def calculate_song_durations! | ||
| @songs.each_with_index do |song, i| | ||
| if song == @songs.last | ||
| song[:duration] = (@track_duration - song[:index]) if @track_duration | ||
| return | ||
| end | ||
| song[:duration] = @songs[i + 1][:index] - song[:index] | ||
| end | ||
| end | ||
|
|
||
| def between(a, b, position_index) | ||
| (position_index > a) && (position_index < b) | ||
| end | ||
|
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||
| def parse_titles | ||
| unless @titles | ||
| @titles = cuesheet_scan(:title).map{ |title| title.first } | ||
| @titles.delete_at(0) | ||
| end | ||
| @titles | ||
| end | ||
|
|
||
| def parse_performers | ||
| unless @performers | ||
| @performers = cuesheet_scan(:performer).map{ |performer| performer.first } | ||
| @performers.delete_at(0) | ||
| end | ||
| @performers | ||
| end | ||
|
|
||
| def parse_tracks | ||
| @tracks ||= cuesheet_scan(:track).map{ |track| track.first.to_i } | ||
| end | ||
|
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||
| def parse_indices | ||
| @indices ||= cuesheet_scan(:index).map{ |index| AlacIt::Index.new([index[0].to_i, index[1].to_i, index[2].to_i]) } | ||
| end | ||
|
|
||
| def cuesheet_scan(field) | ||
| scan = @cuesheet.scan(@reg[field]) | ||
| raise InvalidCuesheet.new("No fields were found for #{field.to_s}") if scan.empty? | ||
| scan | ||
| end | ||
|
|
||
| end | ||
| end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| module AlacIt | ||
| class Index | ||
| SECONDS_PER_MINUTE = 60 | ||
| FRAMES_PER_SECOND = 75 | ||
| FRAMES_PER_MINUTE = FRAMES_PER_SECOND * 60 | ||
|
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||
| attr_reader :minutes, :seconds, :frames | ||
|
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||
| def initialize(value=nil) | ||
| case value | ||
| when Array | ||
| set_from_array!(value) | ||
| when Integer | ||
| set_from_integer!(value) | ||
| end | ||
| end | ||
|
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||
| def to_f | ||
| ((@minutes * SECONDS_PER_MINUTE) + (@seconds) + (@frames.to_f / FRAMES_PER_SECOND)).to_f | ||
| end | ||
|
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||
| def to_i | ||
| to_f.floor | ||
| end | ||
|
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| def to_a | ||
| [@minutes, @seconds, @frames] | ||
| end | ||
|
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||
| def to_s | ||
| "#{'%02d' % @minutes}:#{'%02d' % @seconds}:#{'%02d' % @frames}" | ||
| end | ||
|
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||
| def to_human_ms | ||
| "00:#{'%02d' % @minutes}:#{'%02d' % @seconds}" + (@frames.to_f / 75).round(3).to_s[1..-1] | ||
| end | ||
|
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||
| def +(other) | ||
| self.class.new(carrying_addition(other)) | ||
| end | ||
|
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||
| def -(other) | ||
| self.class.new(carrying_subtraction(other)) | ||
| end | ||
|
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||
| def >(other) | ||
| self.to_f > other.to_f | ||
| end | ||
|
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||
| def <(other) | ||
| self.to_f < other.to_f | ||
| end | ||
|
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||
| def ==(other) | ||
| self.to_a == other.to_a | ||
| end | ||
|
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||
| def each | ||
| to_a.each { |value| yield value } | ||
| end | ||
|
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| private | ||
|
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| def carrying_addition(other) | ||
| minutes, seconds, frames = *[@minutes + other.minutes, | ||
| @seconds + other.seconds, @frames + other.frames] | ||
|
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| seconds, frames = *convert_with_rate(frames, seconds, FRAMES_PER_SECOND) | ||
| minutes, seconds = *convert_with_rate(seconds, minutes, SECONDS_PER_MINUTE) | ||
| [minutes, seconds, frames] | ||
| end | ||
|
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| def carrying_subtraction(other) | ||
| seconds = minutes = 0 | ||
|
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| my_frames = @frames + (@seconds * FRAMES_PER_SECOND) + (@minutes * FRAMES_PER_MINUTE) | ||
| other_frames = other.frames + (other.seconds * FRAMES_PER_SECOND) + (other.minutes * FRAMES_PER_MINUTE) | ||
| frames = my_frames - other_frames | ||
|
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| seconds, frames = *convert_with_rate(frames, seconds, FRAMES_PER_SECOND) | ||
| minutes, seconds = *convert_with_rate(seconds, minutes, SECONDS_PER_MINUTE) | ||
| [minutes, seconds, frames] | ||
| end | ||
|
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||
| def convert_with_rate(from, to, rate, step=1) | ||
| while from >= rate | ||
| to += step | ||
| from -= rate | ||
| end | ||
| [to, from] | ||
| end | ||
|
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||
| def set_from_array!(array) | ||
| if array.size != 3 || array.any?{|element| !element.is_a?(Integer)} | ||
| raise ArgumentError.new("Must be initialized with an array in the format of [minutes, seconds,frames], all integers") | ||
| end | ||
| @minutes, @seconds, @frames = *array | ||
| end | ||
|
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||
| def set_from_integer!(seconds) | ||
| @minutes = 0 | ||
| @frames = 0 | ||
| @seconds = seconds | ||
|
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| while @seconds >= SECONDS_PER_MINUTE | ||
| @minutes += 1 | ||
| @seconds -= SECONDS_PER_MINUTE | ||
| end | ||
| end | ||
|
|
||
| end | ||
| end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,3 @@ | ||
| module AlacIt | ||
| VERSION = '0.1.1' | ||
| VERSION = '1.0.0' | ||
| end |
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