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):
224 ly_now = Rational (0)
225 pending_skip = Rational (0)
229 for n in voice._elements:
230 if n.get_name () == 'forward':
233 if isinstance (n, musicxml.Attributes):
234 ly_now += pending_skip
235 pending_skip = Rational (0)
237 ly_voice.extend (musicxml_attributes_to_lily (n))
240 if not n.__class__.__name__ == 'Note':
241 print 'not a Note or Attributes?', n
244 if n.is_first () and ly_voice:
245 ly_voice[-1].comment += '\n'
248 main_event = musicxml_note_to_lily_main_event (n)
251 if None == n.get_maybe_exist_typed_child (musicxml.Chord):
252 ly_now += pending_skip
253 pending_skip = main_event.get_length ()
255 if ly_now <> n._when:
256 diff = n._when - ly_now
258 if diff < Rational (0):
259 print 'huh: negative skip', n._when, ly_now, n._duration
260 diff = Rational (1,314159265)
262 ly_voice.append (create_skip_music (diff))
265 ly_voice.append (musicexp.EventChord())
269 ev_chord = ly_voice[-1]
270 ev_chord.append (main_event)
272 notations = n.get_maybe_exist_typed_child (musicxml.Notations)
276 if notations.get_tuplet():
277 tuplet_event = notations.get_tuplet()
278 mod = n.get_maybe_exist_typed_child (musicxml.Time_modification)
281 frac = mod.get_fraction ()
283 tuplet_events.append ((ev_chord, tuplet_event, frac))
285 slurs = [s for s in notations.get_named_children ('slur')
286 if s.get_type () in ('start','stop')]
289 print 'more than 1 slur?'
291 lily_ev = musicxml_spanner_to_lily_event (slurs[0])
292 ev_chord.append (lily_ev)
294 mxl_tie = notations.get_tie ()
295 if mxl_tie and mxl_tie.type == 'start':
296 ev_chord.append (musicexp.TieEvent ())
298 mxl_beams = [b for b in n.get_named_children ('beam')
299 if b.get_type () in ('begin', 'end')]
301 beam_ev = musicxml_spanner_to_lily_event (mxl_beams[0])
303 ev_chord.append (beam_ev)
306 mod = n.get_maybe_exist_typed_child (musicxml.Time_modification)
309 frac = mod.get_fraction ()
311 tuplet_events.append ((ev_chord, tuplet_event, frac))
313 ly_voice = group_tuplets (ly_voice, tuplet_events)
315 seq_music = musicexp.SequentialMusic()
317 seq_music.elements = ly_voice
321 def musicxml_id_to_lily (id):
322 digits = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight',
326 d = digits.index (dig) + 1
327 dig = dig[0].upper() + dig[1:]
328 id = re.sub ('%d' % d, dig, id)
330 id = re.sub ('[^a-zA-Z]', 'X', id)
334 def musicxml_pitch_to_lily (mxl_pitch):
336 p.alteration = mxl_pitch.get_alteration ()
337 p.step = (ord (mxl_pitch.get_step ()) - ord ('A') + 7 - 2) % 7
338 p.octave = mxl_pitch.get_octave () - 4
343 def voices_in_part (part):
344 """Return a Name -> Voice dictionary for PART"""
346 part.extract_voices ()
347 voice_dict = part.get_voices ()
351 def voices_in_part_in_parts (parts):
352 """return a Part -> Name -> Voice dictionary"""
353 return dict([(p, voices_in_part (p)) for p in parts])
356 def get_all_voices (parts):
357 all_voices = voices_in_part_in_parts (parts)
360 for p, name_voice in all_voices.items ():
363 for n, v in name_voice.items ():
364 progress ("Converting to LilyPond expressions...")
365 part_ly_voices[n] = (musicxml_voice_to_lily_voice (v), v)
367 all_ly_voices[p] = part_ly_voices
371 class NonDentedHeadingFormatter (optparse.IndentedHelpFormatter):
372 def format_heading(self, heading):
374 return heading[0].upper() + heading[1:] + ':\n'
376 def format_option_strings(self, option):
378 if option._short_opts and option._long_opts:
382 if option.takes_value():
383 metavar = '=' + option.metavar or option.dest.upper()
385 return "%3s%s %s%s" % (" ".join (option._short_opts),
387 " ".join (option._long_opts),
390 def format_usage(self, usage):
391 return _("Usage: %s\n") % usage
393 def format_description(self, description):
397 def option_parser ():
398 p = optparse.OptionParser(usage='musicxml2ly FILE.xml',
399 version = """%prog (LilyPond) @TOPLEVEL_VERSION@
401 This program is free software. It is covered by the GNU General Public
402 License and you are welcome to change it and/or distribute copies of it
403 under certain conditions. Invoke as `lilypond --warranty' for more
406 Copyright (c) 2005--2006 by
407 Han-Wen Nienhuys <hanwen@xs4all.nl> and
408 Jan Nieuwenhuizen <janneke@gnu.org>
412 """Convert MusicXML file to LilyPond input.
415 p.add_option ('-v', '--verbose',
416 action = "store_true",
419 p.add_option ('-o', '--output',
425 help = 'set output file')
427 p.add_option_group ('', description = '''Report bugs via http://post.gmane.org/post.php?group=gmane.comp.gnu.lilypond.bugs
429 p.formatter = NonDentedHeadingFormatter ()
432 def music_xml_voice_name_to_lily_name (part, name):
433 str = "Part%sVoice%s" % (part.id, name)
434 return musicxml_id_to_lily (str)
436 def print_voice_definitions (printer, voices):
437 for (part, nv_dict) in voices.items():
438 for (name, (voice, mxlvoice)) in nv_dict.items ():
439 k = music_xml_voice_name_to_lily_name (part, name)
440 printer.dump ('%s = ' % k)
441 voice.print_ly (printer)
444 return dict ([(elt,1) for elt in l]).keys ()
446 def print_score_setup (printer, part_list, voices):
447 part_dict = dict ([(p.id, p) for p in voices.keys ()])
451 for part_definition in part_list:
452 part_name = part_definition.id
454 part = part_dict[part_name]
456 print 'unknown part in part-list:', part_name
459 nv_dict = voices[part]
460 staves = reduce (lambda x,y: x+ y,
461 [mxlvoice._staves.keys ()
462 for (v, mxlvoice) in nv_dict.values ()],
466 staves = uniq_list (staves)
468 printer ('\\context PianoStaff << ')
472 staff_voices = [music_xml_voice_name_to_lily_name (part, voice_name)
473 for (voice_name, (v, mxlvoice)) in nv_dict.items ()
474 if mxlvoice._start_staff == s]
476 printer ('\\context Staff = "%s" << ' % s)
478 for v in staff_voices:
479 printer ('\\context Voice = "%s" \\%s' % (v,v))
488 printer ('\\new Staff <<')
490 for (n,v) in nv_dict.items ():
492 n = music_xml_voice_name_to_lily_name (part, n)
493 printer ('\\context Voice = "%s" \\%s' % (n,n))
503 def print_ly_preamble (printer, filename):
504 printer.dump_version ()
505 printer.print_verbatim ('%% converted from %s\n' % filename)
507 def convert (filename, output_name):
508 printer = musicexp.Output_printer()
509 progress ("Reading MusicXML...")
511 tree = musicxml.read_musicxml (filename)
512 parts = tree.get_typed_children (musicxml.Part)
513 voices = get_all_voices (parts)
516 if tree.get_maybe_exist_typed_child (musicxml.Part_list):
517 pl = tree.get_maybe_exist_typed_child (musicxml.Part_list)
518 part_list = pl.get_named_children ("score-part")
521 output_name = os.path.basename (filename)
522 output_name = os.path.splitext (output_name)[0] + '.ly'
526 progress ("Output to `%s'" % output_name)
527 printer.set_file (open (output_name, 'w'))
529 progress ("Printing as .ly...")
531 print_ly_preamble (printer, filename)
532 print_voice_definitions (printer, voices)
533 print_score_setup (printer, part_list, voices)
539 opt_parser = option_parser()
541 (options, args) = opt_parser.parse_args ()
543 opt_parser.print_usage()
546 voices = convert (args[0], options.output)
548 if __name__ == '__main__':