8 from gettext import gettext as _
10 datadir = '@local_lilypond_datadir@'
11 if not os.path.isdir (datadir):
12 datadir = '@lilypond_datadir@'
13 if os.environ.has_key ('LILYPONDPREFIX'):
14 datadir = os.environ['LILYPONDPREFIX']
15 while datadir[-1] == os.sep:
16 datadir = datadir[:-1]
18 if os.path.exists (os.path.join (datadir, 'share/lilypond/@TOPLEVEL_VERSION@/')):
19 datadir = os.path.join (datadir, 'share/lilypond/@TOPLEVEL_VERSION@/')
20 elif os.path.exists (os.path.join (datadir, 'share/lilypond/current/')):
21 datadir = os.path.join (datadir, 'share/lilypond/current/')
23 sys.path.insert (0, os.path.join (datadir, 'python'))
28 from rational import Rational
32 sys.stderr.write (str + '\n')
36 def musicxml_duration_to_lily (mxl_note):
37 d = musicexp.Duration ()
38 if mxl_note.get_maybe_exist_typed_child (musicxml.Type):
39 d.duration_log = mxl_note.get_duration_log ()
43 d.dots = len (mxl_note.get_typed_children (musicxml.Dot))
44 d.factor = mxl_note._duration / d.get_length ()
48 def group_tuplets (music_list, events):
51 """Collect Musics from
52 MUSIC_LIST demarcated by EVENTS_LIST in TimeScaledMusic objects.
59 for (ev_chord, tuplet_elt, fraction) in events:
60 while (j < len (music_list)):
61 if music_list[j]== ev_chord:
64 if tuplet_elt.type == 'start':
65 indices.append ((j, None, fraction))
66 elif tuplet_elt.type == 'stop':
67 indices[-1] = (indices[-1][0], j, indices[-1][2])
71 for (i1, i2, frac) in indices:
75 new_list.extend (music_list[last:i1])
76 seq = musicexp.SequentialMusic ()
78 seq.elements = music_list[i1:last]
80 tsm = musicexp.TimeScaledMusic ()
83 tsm.numerator = frac[0]
84 tsm.denominator = frac[1]
88 new_list.extend (music_list[last:])
92 def musicxml_clef_to_lily (mxl):
93 sign = mxl.get_maybe_exist_named_child ('sign')
94 change = musicexp.ClefChange ()
96 change.type = sign.get_text ()
100 def musicxml_time_to_lily (mxl):
101 beats = mxl.get_maybe_exist_named_child ('beats')
102 type = mxl.get_maybe_exist_named_child ('beat-type')
103 change = musicexp.TimeSignatureChange()
104 change.fraction = (string.atoi(beats.get_text ()),
105 string.atoi(type.get_text ()))
109 def musicxml_key_to_lily (mxl):
110 start_pitch = musicexp.Pitch ()
112 mode = mxl.get_maybe_exist_named_child ('mode')
114 mode = mode.get_text ()
118 (n,a) = { 'major' : (0,0),
122 start_pitch.alteration = a
124 print 'unknown mode', mode
126 fifths = string.atoi (mxl.get_maybe_exist_named_child ('fifths').get_text ())
128 fifth = musicexp.Pitch()
135 start_pitch = musicexp.Pitch()
136 for x in range (fifths):
137 start_pitch = start_pitch.transposed (fifth)
139 start_pitch.octave = 0
141 change = musicexp.KeySignatureChange()
143 change.tonic = start_pitch
146 def musicxml_attributes_to_lily (attrs):
149 'clef': musicxml_clef_to_lily,
150 'time': musicxml_time_to_lily,
151 'key': musicxml_key_to_lily
153 for (k, func) in attr_dispatch.items ():
154 childs = attrs.get_named_children (k)
156 ## ugh: you get clefs spread over staves for piano
158 elts.append (func (childs[0]))
162 def create_skip_music (duration):
163 skip = musicexp.SkipEvent()
164 skip.duration.duration_log = 0
165 skip.duration.factor = duration
167 evc = musicexp.EventChord ()
171 spanner_event_dict = {
172 'slur' : musicexp.SlurEvent,
173 'beam' : musicexp.BeamEvent,
175 spanner_type_dict = {
182 def musicxml_spanner_to_lily_event (mxl_event):
185 name = mxl_event.get_name()
187 func = spanner_event_dict[name]
190 print 'unknown span event ', mxl_event
193 key = mxl_event.get_type ()
194 ev.span_direction = spanner_type_dict[key]
196 print 'unknown span type', key, 'for', name
200 def musicxml_note_to_lily_main_event (n):
204 mxl_pitch = n.get_maybe_exist_typed_child (musicxml.Pitch)
207 pitch = musicxml_pitch_to_lily (mxl_pitch)
208 event = musicexp.NoteEvent()
211 acc = n.get_maybe_exist_named_child ('accidental')
213 # let's not force accs everywhere.
214 event.cautionary = acc.editorial
216 elif n.get_maybe_exist_typed_child (musicxml.Rest):
217 event = musicexp.RestEvent()
219 event.duration = musicxml_duration_to_lily (n)
222 def musicxml_voice_to_lily_voice (voice):
225 ly_now = Rational (0)
230 if n.get_name () == 'forward':
233 if isinstance (n, musicxml.Attributes):
234 ly_voice.extend (musicxml_attributes_to_lily (n))
237 if not n.__class__.__name__ == 'Note':
238 print 'not a Note or Attributes?', n
241 if n.is_first () and ly_voice:
242 ly_voice[-1].comment += '\n'
245 if None == n.get_maybe_exist_typed_child (musicxml.Chord):
247 ly_now += ly_voice[-1].get_length ()
249 if ly_now <> n._when:
250 diff = n._when - ly_now
251 if diff < Rational (0):
252 print 'huh: negative skip', n._when, ly_now, n._duration
253 diff = Rational (1,314159265)
255 ly_voice.append (create_skip_music (diff))
258 ly_voice.append (musicexp.EventChord())
262 ev_chord = ly_voice[-1]
264 main_event = musicxml_note_to_lily_main_event (n)
265 ev_chord.append (main_event)
267 notations = n.get_maybe_exist_typed_child (musicxml.Notations)
271 if notations.get_tuplet():
272 mod = n.get_maybe_exist_typed_child (musicxml.Time_modification)
275 frac = mod.get_fraction ()
277 tuplet_events.append ((ev_chord, tuplet_event, frac))
279 slurs = [s for s in notations.get_named_children ('slur')
280 if s.get_type () in ('start','stop')]
283 print 'more than 1 slur?'
285 lily_ev = musicxml_spanner_to_lily_event (slurs[0])
286 ev_chord.append (lily_ev)
288 mxl_tie = notations.get_tie ()
289 if mxl_tie and mxl_tie.type == 'start':
290 ev_chord.append (musicexp.TieEvent ())
292 mxl_beams = [b for b in n.get_named_children ('beam')
293 if b.get_type () in ('begin', 'end')]
295 beam_ev = musicxml_spanner_to_lily_event (mxl_beams[0])
297 ev_chord.append (beam_ev)
300 mod = n.get_maybe_exist_typed_child (musicxml.Time_modification)
303 frac = mod.get_fraction ()
305 tuplet_events.append ((ev_chord, tuplet_event, frac))
307 ly_voice = group_tuplets (ly_voice, tuplet_events)
309 seq_music = musicexp.SequentialMusic()
311 seq_music.elements = ly_voice
315 def musicxml_id_to_lily (id):
316 digits = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
320 d = digits.index (dig) + 1
321 dig = dig[0].upper() + dig[1:]
322 id = re.sub ('%d' % d, dig, id)
324 id = re.sub ('[^a-zA-Z]', 'X', id)
328 def musicxml_pitch_to_lily (mxl_pitch):
330 p.alteration = mxl_pitch.get_alteration ()
331 p.step = (ord (mxl_pitch.get_step ()) - ord ('A') + 7 - 2) % 7
332 p.octave = mxl_pitch.get_octave () - 4
335 def get_all_voices (parts):
336 progress ("Synchronizing MusicXML...")
342 voice_dict = p.get_voices ()
344 for (id, voice) in voice_dict.items ():
345 m_name = 'Part' + p.id + 'Voice' + id
346 m_name = musicxml_id_to_lily (m_name)
347 all_voices[m_name] = voice
350 progress ("Converting to LilyPond expressions...")
352 for (k, v) in all_voices.items():
353 all_ly_voices[k] = musicxml_voice_to_lily_voice (v)
357 class NonDentedHeadingFormatter (optparse.IndentedHelpFormatter):
358 def format_heading(self, heading):
360 return heading[0].upper() + heading[1:] + ':\n'
362 def format_option_strings(self, option):
364 if option._short_opts and option._long_opts:
368 if option.takes_value():
369 metavar = '=' + option.metavar or option.dest.upper()
371 return "%3s%s %s%s" % (" ".join (option._short_opts),
373 " ".join (option._long_opts),
376 def format_usage(self, usage):
377 return _("Usage: %s\n") % usage
379 def format_description(self, description):
383 def option_parser ():
384 p = optparse.OptionParser(usage='musicxml2ly FILE.xml',
385 version = """%prog (LilyPond) @TOPLEVEL_VERSION@
387 This program is free software. It is covered by the GNU General Public
388 License and you are welcome to change it and/or distribute copies of it
389 under certain conditions. Invoke as `lilypond --warranty' for more
392 Copyright (c) 2005 by
393 Han-Wen Nienhuys <hanwen@xs4all.nl> and
394 Jan Nieuwenhuizen <janneke@gnu.org>
398 """Convert MusicXML file to LilyPond input.
401 p.add_option ('-v', '--verbose',
402 action = "store_true",
405 p.add_option ('-o', '--output',
411 help = 'set output file')
413 p.add_option_group ('', description = '''Report bugs via http://post.gmane.org/post.php?group=gmane.comp.gnu.lilypond.bugs
415 p.formatter = NonDentedHeadingFormatter ()
419 def convert (filename, output_name):
421 printer = musicexp.Output_printer()
423 progress ("Reading MusicXML...")
425 tree = musicxml.read_musicxml (filename)
426 parts = tree.get_typed_children (musicxml.Part)
428 voices = get_all_voices (parts)
431 printer.file = open (output_name,'w')
433 progress ("Printing as .ly...")
434 for (k,v) in voices.items():
435 printer.dump ('%s = ' % k)
442 opt_parser = option_parser()
444 (options, args) = opt_parser.parse_args ()
446 opt_parser.print_usage()
449 voices = convert (args[0], options.output)