def parseFile(file):
# get the first child element with tag part, this is the song
root = ET.parse(file).getroot()
part1 = getChild(root, "part")
identification = getChild(root, "identification")
creator = getChild(identification, "creator")
composer = creator.text
# get the song key
attribute = getChild(part1[0], "attributes")
key = getChild(attribute, "key")
keynumber = None
out = {}
for measure in part1:
out[measure.attrib["number"]] = {}
# each measure (beat) has multiple harmonies (chords)
harmonies = getChildren(measure, "harmony")
# parse the harmony tag with Chord().toJson and put it into the json file
chords = []
for harmony in harmonies:
chord = ChordXML(harmony, key)
keynumber = chord.key
chords += [chord.toJson()]
# chords = [Chord(harmony, key).toJson() for harmony in harmonies]
out[measure.attrib["number"]] = chords
return out, keynumber, composer
def parseKey(self, keytag):
fifths = int(getChild(keytag, "fifths").text)
mode = getChild(keytag, "mode").text
if (mode == "major"):
# major c.o.f. starts at C
return (3 - fifths * 5) % 12
elif (mode == "minor"):
# minor starts at A
return (0 - fifths * 5) % 12
print("key is not major or minor!??!?!????!!??: " + mode)
def getRoot(self) -> int:
rootEl = getChild(self.harmony, "root")
rootStepEl = getChild(rootEl, "root-step")
rootAlterEl = getChild(rootEl, "root-alter")
note = Note(rootStepEl.text).toNumber()
if (rootAlterEl == None):
alter = 0
else:
alter = int(rootAlterEl.text)
return (note + alter - self.key) % 12
def parseBass(self):
bassEl = getChild(self.harmony, "bass")
if (bassEl == None): return None
bassStepEl = getChild(bassEl, "bass-step")
bassAlterEl = getChild(bassEl, "bass-alter")
if (bassAlterEl == None):
alterBy = 0
else:
alterBy = int(bassAlterEl.text)
bassnote = Note(bassStepEl.text).toNumber()
return (bassnote + alterBy - self.key - self.root) % 12
def alterDegrees(self, degrees):
degreeEls = getChildren(self.harmony, "degree")
if (len(degreeEls) == 0): return degrees
altered = degrees
for child in degreeEls:
interval = getChild(child, "degree-value").text
alter = getChild(child, "degree-alter").text
dtype = getChild(child, "degree-type").text
oldValue = self.intervalToInt(int(interval))
value = oldValue + int(alter)
if (dtype == "add"):
if (value not in altered): altered += [value]
elif (dtype == "subtract"):
if (value in altered): altered.remove(value)
elif (dtype == "alter"):
if (oldValue in altered): altered.remove(oldValue)
if (value not in altered): altered += [value]
else:
print("weird degree type!!!: " + dtype)
return altered
def getDegreesFromKind(self):
kindEl = getChild(self.harmony, "kind")
if ("text" in kindEl.attrib):
attr = kindEl.attrib["text"]
if (attr == ""): return [4, 7]
if (attr == "m"): return [3, 7]
if (attr == "6"): return [4, 7, 9]
if (attr == "7"): return [4, 7, 10]
if (attr == "9"): return [4, 7, 10, 2]
if (attr == "11"): return [4, 7, 10, 5]
if (attr == "13"): return [4, 7, 10, 9]
if (attr == "69"): return [4, 7, 9, 2]
if (attr == "m6"): return [3, 7, 9]
if (attr == "m7"): return [3, 7, 10]
if (attr == "m9"): return [3, 7, 10, 2]
if (attr == "m11"): return [3, 7, 10, 5]
if (attr == "m13"): return [3, 7, 10, 9]
if (attr == "m69"): return [3, 7, 9, 2]
if (attr == "maj7"): return [4, 7, 11]
if (attr == "maj9"): return [4, 7, 11, 2]
if (attr == "maj11"): return [4, 7, 11, 5]
if (attr == "maj13"): return [4, 7, 11, 9]
if (attr == "7alt"): return [4, 6, 10]
if (attr == "+"): return [4, 8]
if (attr == "sus4"): return [5, 7]
if (attr == "7sus4"): return [5, 7, 10]
if (attr == "9sus4"): return [5, 7, 10, 2]
if (attr == "13sus4"): return [5, 7, 10, 9]
else:
text = kindEl.text
if (text == "major"): return [4, 7]
if (text == "diminished"): return [3, 6]
if (text == "diminished-seventh"): return [3, 6, 10]
print("weird kind degree!!: " + kindEl.text)