Add a new file utilities.py.

diff --git a/python/utilities.py b/python/utilities.py
new file mode 100644 (file)
index 0000000..da2386b
--- /dev/null
+++ b/python/utilities.py
@@ -0,0 +1,268 @@
+# -*- coding: utf-8 -*-
+import re
+import string
+
+def string_to_number(s):
+    try:
+        return int(s)
+    except ValueError:
+        return float(s)
+
+def string_to_integer(s):
+    num = string_to_number(s)
+    if isinstance(num, int):
+        return num
+    else:
+        return int(num)
+
+def escape_ly_output_string (input_string):
+    return_string = input_string
+    needs_quotes = not re.match (u"^[a-zA-ZäöüÜÄÖßñ]*$", return_string);
+    if needs_quotes:
+        return_string = "\"" + string.replace (return_string, "\"", "\\\"") + "\""
+    return return_string
+
+def interpret_alter_element (alter_elm):
+    alter = 0
+    if alter_elm:
+        val = eval(alter_elm.get_text ())
+        if type (val) in (int, float):
+            alter = val
+    return alter
+
+def musicxml_duration_to_log (dur):
+    return  {'256th': 8,
+             '128th': 7,
+             '64th': 6,
+             '32nd': 5,
+             '16th': 4,
+             'eighth': 3,
+             'quarter': 2,
+             'half': 1,
+             'whole': 0,
+             'breve':-1,
+             'longa':-2,
+             'long':-2}.get (dur, 0)
+
+def hexcolorval_to_nr (hex_val):
+    try:
+        v = int (hex_val, 16)
+        if v == 255:
+            v = 256
+        return v / 256.
+    except ValueError:
+        return 0.
+
+def hex_to_color(hex_val):
+    res = re.match (
+        r'#([0-9a-f][0-9a-f]|)([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])([0-9a-f][0-9a-f])$',
+        hex_val,
+        re.IGNORECASE)
+    if res:
+        return map(lambda x: hexcolorval_to_nr (x), res.group (2, 3, 4))
+    else:
+        return None
+
+def split_string_and_preserve_doublequoted_substrings(value):
+    import shlex
+    lex = shlex.shlex(value)
+    lex.quotes = '"'
+    lex.whitespace_split = True
+    lex.commenters = ''
+    return list(lex)
+
+def musicxml_sound_to_lilypond_midi_instrument(sound):
+    sounds = {
+        "brass.french-horn": 'french horn',
+        "brass.group": 'brass section',
+        "brass.group.synth": 'synthbrass 1',
+        "brass.trombone": 'trombone',
+        "brass.trombone.alto": 'trombone',
+        "brass.trombone.bass": 'trombone',
+        "brass.trombone.contrabass": 'trombone',
+        "brass.trombone.tenor": 'trombone',
+        "brass.trumpet": 'trumpet',
+        "brass.trumpet.baroque": 'trumpet',
+        "brass.trumpet.bass": 'trumpet',
+        "brass.trumpet.bflat": 'trumpet',
+        "brass.trumpet.c": 'trumpet',
+        "brass.trumpet.d": 'trumpet',
+        "brass.trumpet.piccolo": 'trumpet',
+        "brass.trumpet.pocket": 'trumpet',
+        "brass.trumpet.slide": 'trumpet',
+        "brass.trumpet.tenor": 'trumpet',
+        "brass.tuba": 'tuba',
+        "brass.tuba.bass": 'tuba',
+        "brass.tuba.subcontrabass": 'tuba',
+        "brass.wagner-tuba": 'french horn',
+        "drum.timpani": 'timpani',
+        "drum.tom-tom": 'melodic tom',
+        "drum.tom-tom.synth": 'synth drum',
+        "effect.applause": 'applause',
+        "effect.bass-string-slap": 'slap bass 1',
+        "effect.bird": 'bird tweet',
+        "effect.bird.tweet": 'bird tweet',
+        "effect.breath": 'breath noise',
+        "effect.guitar-fret": 'guitar fret noise',
+        "effect.gunshot": 'gunshot',
+        "effect.helicopter": 'helicopter',
+        "effect.metronome-click": 'woodblock',
+        "effect.rain": 'fx1 (rain)',
+        "effect.seashore": 'seashore',
+        "effect.telephone-ring": 'telephone ring',
+        "keyboard.accordion": 'accordion',
+        "keyboard.bandoneon": 'accordion',
+        "keyboard.celesta": 'celesta',
+        "keyboard.clavichord": 'clav',
+        "keyboard.concertina": 'concertina',
+        "keyboard.harpsichord": 'harpsichord',
+        "keyboard.ondes-martenot": 'ocarina',
+        "keyboard.organ": 'church organ',
+        "keyboard.organ.drawbar": 'drawbar organ',
+        "keyboard.organ.percussive": 'percussive organ',
+        "keyboard.organ.pipe": 'church organ',
+        "keyboard.organ.reed": 'reed organ',
+        "keyboard.piano": 'acoustic grand',
+        "keyboard.piano.electric": 'electric piano 1',
+        "keyboard.piano.grand": 'acoustic grand',
+        "keyboard.piano.honky-tonk": 'honky-tonk',
+        "metal.bells.agogo": 'agogo',
+        "metal.bells.tinklebell": 'tinkle bell',
+        "metal.cymbal.reverse": 'reverse cymbal',
+        "pitched-percussion.glockenspiel": 'glockenspiel',
+        "pitched-percussion.glockenspiel.alto": 'glockenspiel',
+        "pitched-percussion.glockenspiel.soprano": 'glockenspiel',
+        "pitched-percussion.hammer-dulcimer": 'dulcimer',
+        "pitched-percussion.kalimba": 'kalimba',
+        "pitched-percussion.marimba": 'marimba',
+        "pitched-percussion.marimba.bass": 'marimba',
+        "pitched-percussion.music-box": 'music box',
+        "pitched-percussion.tubular-bells": 'tubular bells',
+        "pitched-percussion.vibraphone": 'vibraphone',
+        "pitched-percussion.xylophone": 'xylophone',
+        "pitched-percussion.xylophone.alto": 'xylophone',
+        "pitched-percussion.xylophone.bass": 'xylophone',
+        "pitched-percussion.xylophone.soprano": 'xylophone',
+        "pitched-percussion.xylorimba": 'xylophone',
+        "pluck.banjo": 'banjo',
+        "pluck.banjo.tenor": 'banjo',
+        "pluck.bass": 'acoustic bass',
+        "pluck.bass.acoustic": 'acoustic bass',
+        "pluck.bass.electric": 'electric bass',
+        "pluck.bass.fretless": 'fretless bass',
+        "pluck.bass.synth": 'synth bass 1',
+        "pluck.dulcimer": 'dulcimer',
+        "pluck.guitar": 'acoustic guitar (nylon)',
+        "pluck.guitar.acoustic": 'acoustic guitar (nylon)',
+        "pluck.guitar.electric": 'electric guitar (jazz)',
+        "pluck.guitar.nylon-string": 'acoustic guitar (nylon)',
+        "pluck.guitar.steel-string": 'acoustic guitar (steel)',
+        "pluck.harp": 'orchestral harp',
+        "pluck.lute": 'acoustic guitar (nylon)',
+        "pluck.shamisen": 'shamisen',
+        "pluck.sitar": 'sitar',
+        "strings.cello": 'cello',
+        "strings.cello.piccolo": 'cello',
+        "strings.contrabass": 'contrabass',
+        "strings.fiddle": 'fiddle',
+        "strings.group.synth": 'synth strings 1',
+        "strings.viola": 'viola',
+        "strings.violin": 'violin',
+        "synth.effects.atmosphere": 'fx 4 (atmosphere)',
+        "synth.effects.brightness": 'fx 5 (brightness)',
+        "synth.effects.crystal": 'fx 3 (crystal)',
+        "synth.effects.echoes": 'fx 7 echoes',
+        "synth.effects.goblins": 'fx 6 goblins',
+        "synth.effects.rain": 'fx 1 rain',
+        "synth.effects.sci-fi": 'fx 8 sci-fi',
+        "synth.effects.soundtrack": 'fx 2 (soundtrack)',
+        "synth.pad.bowed": 'pad 5 bowed',
+        "synth.pad.choir": 'pad 4 choir',
+        "synth.pad.halo": 'pad 7 halo',
+        "synth.pad.metallic": 'pad 6 metallic',
+        "synth.pad.polysynth": 'pad 3 polysynth',
+        "synth.pad.sweep": 'pad 8 sweep',
+        "synth.pad.warm": 'pad 2 warm',
+        "synth.tone.sawtooth": 'lead 1 (square)',
+        "synth.tone.square": 'lead 2 (sawtooth)',
+        "voice.aa": 'choir aahs',
+        "voice.alto": 'choir aahs',
+        "voice.aw": 'choir aahs',
+        "voice.baritone": 'choir aahs',
+        "voice.bass": 'choir aahs',
+        "voice.child": 'choir aahs',
+        "voice.countertenor": 'choir aahs',
+        "voice.doo": 'choir aahs',
+        "voice.ee": 'choir aahs',
+        "voice.female": 'choir aahs',
+        "voice.kazoo": 'choir aahs',
+        "voice.male": 'choir aahs',
+        "voice.mezzo-soprano": 'choir aahs',
+        "voice.mm": 'choir aahs',
+        "voice.oo": 'voice oohs',
+        "voice.soprano": 'choir aahs',
+        "voice.synth": 'synth voice',
+        "wind.flutes.blown-bottle": 'blown bottle',
+        "wind.flutes.calliope": 'lead 3 (calliope)',
+        "wind.flutes.flute": 'flute',
+        "wind.flutes.flute.alto": 'flute',
+        "wind.flutes.flute.bass": 'flute',
+        "wind.flutes.flute.contra-alto": 'flute',
+        "wind.flutes.flute.contrabass": 'flute',
+        "wind.flutes.flute.double-contrabass": 'flute',
+        "wind.flutes.flute.piccolo": 'flute',
+        "wind.flutes.flute.subcontrabass": 'flute',
+        "wind.flutes.ocarina": 'ocarina',
+        "wind.flutes.recorder": 'recorder',
+        "wind.flutes.recorder.alto": 'recorder',
+        "wind.flutes.recorder.bass": 'recorder',
+        "wind.flutes.recorder.contrabass": 'recorder',
+        "wind.flutes.recorder.descant": 'recorder',
+        "wind.flutes.recorder.garklein": 'recorder',
+        "wind.flutes.recorder.great-bass": 'recorder',
+        "wind.flutes.recorder.sopranino": 'recorder',
+        "wind.flutes.recorder.soprano": 'recorder',
+        "wind.flutes.recorder.tenor": 'recorder',
+        "wind.flutes.shakuhachi": 'shakuhachi',
+        "wind.flutes.whistle": 'whistle',
+        "wind.flutes.whistle.alto": 'whistle',
+        "wind.pipes.bagpipes": 'bagpipe',
+        "wind.reed.basset-horn": 'clarinet',
+        "wind.reed.bassoon": 'bassoon',
+        "wind.reed.clarinet": 'clarinet',
+        "wind.reed.clarinet.a": 'clarinet',
+        "wind.reed.clarinet.alto": 'clarinet',
+        "wind.reed.clarinet.bass": 'clarinet',
+        "wind.reed.clarinet.basset": 'clarinet',
+        "wind.reed.clarinet.bflat": 'clarinet',
+        "wind.reed.clarinet.contra-alto": 'clarinet',
+        "wind.reed.clarinet.contrabass": 'clarinet',
+        "wind.reed.clarinet.eflat": 'clarinet',
+        "wind.reed.clarinet.piccolo.aflat": 'clarinet',
+        "wind.reed.contrabass": 'contrabass',
+        "wind.reed.contrabassoon": 'bassoon',
+        "wind.reed.english-horn": 'oboe',
+        "wind.reed.harmonica": 'harmonica',
+        "wind.reed.harmonica.bass": 'harmonica',
+        "wind.reed.oboe": 'oboe',
+        "wind.reed.oboe.bass": 'oboe',
+        "wind.reed.oboe.piccolo": 'oboe',
+        "wind.reed.oboe-da-caccia": 'oboe',
+        "wind.reed.oboe-damore": 'oboe',
+        "wind.reed.saxophone": 'alto sax',
+        "wind.reed.saxophone.alto": 'alto sax',
+        "wind.reed.saxophone.baritone": 'baritone sax',
+        "wind.reed.saxophone.bass": 'baritone sax',
+        "wind.reed.saxophone.contrabass": 'baritone sax',
+        "wind.reed.saxophone.melody": 'soprano sax',
+        "wind.reed.saxophone.mezzo-soprano": 'soprano sax',
+        "wind.reed.saxophone.sopranino": 'soprano sax',
+        "wind.reed.saxophone.sopranissimo": 'soprano sax',
+        "wind.reed.saxophone.soprano": 'soprano, sax',
+        "wind.reed.saxophone.subcontrabass": 'baritone sax',
+        "wind.reed.saxophone.tenor": 'tenor sax',
+        "wind.reed.shenai": 'shanai',
+        "wood.temple-block": 'wood block',
+        "wood.wood-block": 'wood block',
+        }
+    return sounds.get(sound, 'acoustic grand')