def __init__(self, input_mei_paths):
'''
PARAMETERS
----------
input_mei_paths {list}: list of mei paths to combine
'''
self._input_mei_paths = input_mei_paths
if len(self._input_mei_paths):
self._meidoc = pymei.read(self._input_mei_paths[0])
else:
self._meidoc = None
def combine(self):
if self._meidoc and len(self._input_mei_paths) > 1:
base_facsimile = self._meidoc.getElementsByName('facsimile')[0]
base_section = self._meidoc.getElementsByName('section')[0]
for f in self._input_mei_paths[1:]:
mei = pymei.read(f)
# combine surface
surface = mei.getElementsByName('surface')
if len(surface):
# have to remove the child from the old document in memory
# or else pymei segfaults ...
surface[0].getParent().removeChild(surface[0])
base_facsimile.addChild(surface[0])
# combine measures
pb = MeiElement('pb')
base_section.addChild(pb)
# get last measure number
measures = base_section.getChildrenByName('measure')
last_measure_n = int(measures[-1].getAttribute('n').value)
new_section = mei.getElementsByName('section')[0]
music_elements = new_section.getChildren()
for e in music_elements:
if e.getName() == 'measure':
last_measure_n += 1
e.addAttribute('n', str(last_measure_n))
base_section.addChild(e)
# remove all musical elements from the old document or else pymei segfaults
new_section.getParent().deleteAllChildren()
self._add_revision()
