-import sys
import new
-import re
-import string
-from rational import Rational
-
-from xml.dom import minidom, Node
+from rational import *
class Xml_node:
def __init__ (self):
self._original = None
self._name = 'xml_node'
self._parent = None
-
+ self._attribute_dict = {}
+
+ def get_parent (self):
+ return self._parent
+
def is_first (self):
return self._parent.get_typed_children (self.__class__)[0] == self
return ''.join ([c.get_text () for c in self._children])
+ def message (self, msg):
+ print msg
+
+ p = self
+ while p:
+ print ' In: <%s %s>' % (p._name, ' '.join (['%s=%s' % item for item in p._attribute_dict.items()]))
+ p = p.get_parent ()
+
def get_typed_children (self, klass):
return [c for c in self._children if isinstance(c, klass)]
class Duration (Music_xml_node):
def get_length (self):
- dur = string.atoi (self.get_text ()) * Rational (1,4)
+ dur = int (self.get_text ()) * Rational (1,4)
return dur
class Hash_comment (Music_xml_node):
ch = self.get_unique_typed_child (class_dict[u'octave'])
step = ch.get_text ().strip ()
- return string.atoi (step)
+ return int (step)
def get_alteration (self):
ch = self.get_maybe_exist_typed_child (class_dict[u'alter'])
alter = 0
if ch:
- alter = string.atoi (ch.get_text ().strip ())
+ alter = int (ch.get_text ().strip ())
return alter
class Measure_element (Music_xml_node):
def set_attributes_from_previous (self, dict):
self._dict.update (dict)
+
def read_self (self):
for c in self.get_all_children ():
self._dict[c.get_name()] = c
def get_named_attribute (self, name):
return self._dict[name]
+ def get_measure_length (self):
+ (n,d) = self.get_time_signature ()
+ return Rational (n,d)
+
+ def get_time_signature (self):
+ "return time sig as a (beat, beat-type) tuple"
+
+ try:
+ mxl = self.get_named_attribute ('time')
+
+ beats = mxl.get_maybe_exist_named_child ('beats')
+ type = mxl.get_maybe_exist_named_child ('beat-type')
+ return (int (beats.get_text ()),
+ int (type.get_text ()))
+ except KeyError:
+ print 'error: requested time signature, but time sig unknown'
+ return (4, 4)
+
+ def get_clef_sign (self):
+ mxl = self.get_named_attribute ('clef')
+ sign = mxl.get_maybe_exist_named_child ('sign')
+ if sign:
+ return sign.get_text ()
+ else:
+ print 'clef requested, but unknow'
+ return 'G'
+
+ def get_key_signature (self):
+ "return (fifths, mode) tuple"
+
+ key = self.get_named_attribute ('key')
+ mode_node = self.get_maybe_exist_named_child ('mode')
+ mode = 'major'
+ if mode_node:
+ mode = mode_node.get_text ()
+
+ fifths = int (key.get_maybe_exist_named_child ('fifths').get_text ())
+ return (fifths, mode)
+
+
class Note (Measure_element):
+ def __init__ (self):
+ Measure_element.__init__ (self)
+ self.instrument_name = ''
+
def get_duration_log (self):
ch = self.get_maybe_exist_typed_child (class_dict[u'type'])
if ch:
log = ch.get_text ().strip()
- return {'eighth': 3,
- 'quarter': 2,
- 'half': 1,
- '16th': 4,
- '32nd': 5,
+ return {'eighth': 3,
+ 'quarter': 2,
+ 'half': 1,
+ '16th': 4,
+ '32nd': 5,
'breve': -1,
- 'long': -2,
- 'whole': 0} [log]
+ 'long': -2,
+ 'whole': 0} [log]
else:
return 0
return self.get_typed_children (class_dict[u'pitch'])
class Part_list (Music_xml_node):
- pass
-
+ def __init__ (self):
+ Music_xml_node.__init__ (self)
+ self._id_instrument_name_dict = {}
+
+ def generate_id_instrument_dict (self):
+
+ ## not empty to make sure this happens only once.
+ mapping = {1: 1}
+ for score_part in self.get_named_children ('score-part'):
+ for instr in score_part.get_named_children ('score-instrument'):
+ id = instr.id
+ name = instr.get_named_child ("instrument-name")
+ mapping[id] = name.get_text ()
+
+ self._id_instrument_name_dict = mapping
+
+ def get_instrument (self, id):
+ if not self._id_instrument_name_dict:
+ self.generate_id_instrument_dict()
+
+ try:
+ return self._id_instrument_name_dict[id]
+ except KeyError:
+ print "Opps, couldn't find instrument for ID=", id
+ return "Grand Piano"
+
class Measure(Music_xml_node):
def get_notes (self):
return self.get_typed_children (class_dict[u'note'])
-
+
class Musicxml_voice:
def __init__ (self):
self._elements = []
class Part (Music_xml_node):
def __init__ (self):
+ Music_xml_node.__init__ (self)
self._voices = []
+ def get_part_list (self):
+ n = self
+ while n and n.get_name() != 'score-partwise':
+ n = n._parent
+
+ return n.get_named_child ('part-list')
+
def interpret (self):
"""Set durations and starting points."""
-
+
+ part_list = self.get_part_list ()
+
now = Rational (0)
factor = Rational (1)
- attr_dict = {}
+ attributes_dict = {}
+ attributes_object = None
measures = self.get_typed_children (Measure)
-
+ last_moment = Rational (-1)
+ last_measure_position = Rational (-1)
for m in measures:
+ measure_start_moment = now
+ measure_position = Rational (0)
for n in m.get_all_children ():
dur = Rational (0)
- if n.__class__ == Attributes:
- n.set_attributes_from_previous (attr_dict)
+ if n.__class__ == Attributes:
+ n.set_attributes_from_previous (attributes_dict)
n.read_self ()
- attr_dict = n._dict.copy ()
-
+ attributes_dict = n._dict.copy ()
+ attributes_object = n
+
factor = Rational (1,
- string.atoi (attr_dict['divisions']
- .get_text ()))
- elif (n.get_maybe_exist_typed_child (Duration)
- and not n.get_maybe_exist_typed_child (Chord)):
+ int (attributes_dict['divisions'].get_text ()))
+
+
+ if (n.get_maybe_exist_typed_child (Duration)):
mxl_dur = n.get_maybe_exist_typed_child (Duration)
dur = mxl_dur.get_length () * factor
+
if n.get_name() == 'backup':
dur = - dur
if n.get_maybe_exist_typed_child (Grace):
dur = Rational (0)
+ rest = n.get_maybe_exist_typed_child (Rest)
+ if (rest
+ and attributes_object
+ and attributes_object.get_measure_length () == dur):
+
+ rest._is_whole_measure = True
+
+ if (dur > Rational (0)
+ and n.get_maybe_exist_typed_child (Chord)):
+ now = last_moment
+ measure_position = last_measure_position
+
+ last_moment = now
+ last_measure_position = measure_position
+
n._when = now
+ n._measure_position = measure_position
n._duration = dur
now += dur
+ measure_position += dur
+ if n._name == 'note':
+ instrument = n.get_maybe_exist_named_child ('instrument')
+ if instrument:
+ n.instrument_name = part_list.get_instrument (instrument.id)
+
+ if attributes_object:
+ length = attributes_object.get_measure_length ()
+ new_now = measure_start_moment + length
+
+ if now <> new_now:
+ problem = 'incomplete'
+ if now > new_now:
+ problem = 'overfull'
+
+ ## only for verbose operation.
+ if problem <> 'incomplete':
+ m.message ('%s measure? Expected: %s, Difference: %s' % (problem, now, new_now - now))
+
+ now = new_now
def extract_voices (part):
voices = {}
def get_fraction (self):
b = self.get_maybe_exist_typed_child (class_dict['actual-notes'])
a = self.get_maybe_exist_typed_child (class_dict['normal-notes'])
- return (string.atoi(a.get_text ()), string.atoi (b.get_text ()))
+ return (int(a.get_text ()), int (b.get_text ()))
class Accidental (Music_xml_node):
def __init__ (self):
class Beam (Music_xml_node):
def get_type (self):
return self.get_text ()
-
+ def is_primary (self):
+ return self.number == "1"
+
class Chord (Music_xml_node):
pass
pass
class Rest (Music_xml_node):
- pass
+ def __init__ (self):
+ Music_xml_node.__init__ (self)
+ self._is_whole_measure = False
+ def is_whole_measure (self):
+ return self._is_whole_measure
+
class Mode (Music_xml_node):
pass
class Tied (Music_xml_node):
class Staff (Music_xml_node):
pass
+class Instrument (Music_xml_node):
+ pass
+
+## need this, not all classes are instantiated
+## for every input file.
class_dict = {
'#comment': Hash_comment,
'accidental': Accidental,
'dot': Dot,
'duration': Duration,
'grace': Grace,
+ 'instrument': Instrument,
'mode' : Mode,
'measure': Measure,
'notations': Notations,
return str (name)
-def create_classes (names, dict):
- for n in names:
- if dict.has_key (n):
- continue
-
- class_name = name2class_name (n)
+def get_class (name):
+ try:
+ return class_dict[name]
+ except KeyError:
+ class_name = name2class_name (name)
klass = new.classobj (class_name, (Music_xml_node,) , {})
- dict[n] = klass
+ class_dict[name] = klass
+ return klass
+
+def lxml_demarshal_node (node):
+ name = node.tag
+
+ if name is None:
+ return None
+ klass = get_class (name)
+ py_node = klass()
+
+ py_node._original = node
+ py_node._name = name
+ py_node._data = node.text
+ py_node._children = [lxml_demarshal_node (cn) for cn in node.getchildren()]
+ py_node._children = filter (lambda x: x, py_node._children)
+
+ for c in py_node._children:
+ c._parent = py_node
-def element_names (node, dict):
- dict[node.nodeName] = 1
- for cn in node.childNodes:
- element_names (cn, dict)
- return dict
+ for (k,v) in node.items ():
+ py_node.__dict__[k] = v
+ py_node._attribute_dict[k] = v
+
+ return py_node
-def demarshal_node (node):
+def minidom_demarshal_node (node):
name = node.nodeName
- klass = class_dict[name]
+
+ klass = get_class (name)
py_node = klass()
py_node._name = name
- py_node._children = [demarshal_node (cn) for cn in node.childNodes]
+ py_node._children = [minidom_demarshal_node (cn) for cn in node.childNodes]
for c in py_node._children:
c._parent = py_node
if node.attributes:
-
for (nm, value) in node.attributes.items():
py_node.__dict__[nm] = value
-
+ py_node._attribute_dict[nm] = value
+
py_node._data = None
if node.nodeType == node.TEXT_NODE and node.data:
py_node._data = node.data
py_node._original = node
return py_node
-def strip_white_space (node):
- node._children = \
- [c for c in node._children
- if not (c._original.nodeType == Node.TEXT_NODE and
- re.match (r'^\s*$', c._data))]
-
- for c in node._children:
- strip_white_space (c)
-
-def create_tree (name):
- doc = minidom.parse(name)
- node = doc.documentElement
- names = element_names (node, {}).keys()
- create_classes (names, class_dict)
-
- return demarshal_node (node)
-
-def test_musicxml (tree):
- m = tree._children[-2]
- print m
-
-def read_musicxml (name):
- tree = create_tree (name)
- strip_white_space (tree)
- return tree
if __name__ == '__main__':
- tree = read_musicxml ('BeetAnGeSample.xml')
- test_musicxml (tree)
-
-
+ import lxml.etree
+
+ tree = lxml.etree.parse ('beethoven.xml')
+ mxl_tree = lxml_demarshal_node (tree.getroot ())
+ ks = class_dict.keys()
+ ks.sort()
+ print '\n'.join (ks)
projects / lilypond.git / blobdiff