def iter_osm_change_file(f, parse_timestamps=True):
action = None
obj = None
for event, elem in etree.iterparse(f, events=('start', 'end')):
if event == 'start':
if elem.tag == 'node':
obj = model.Node(
int(elem.attrib['id']), int(elem.attrib['version']),
int(elem.attrib['changeset']), elem.attrib.get('user'),
maybeInt(elem.attrib.get('uid')),
maybeBool(elem.attrib.get('visible')),
isoToDatetime(elem.attrib.get('timestamp'))
if parse_timestamps else elem.attrib.get('timestamp'),
maybeFloat(elem.attrib.get('lat')),
maybeFloat(elem.attrib.get('lon')), [])
elif elem.tag == 'way':
obj = model.Way(
int(elem.attrib['id']), int(elem.attrib['version']),
int(elem.attrib['changeset']), elem.attrib.get('user'),
maybeInt(elem.attrib.get('uid')),
maybeBool(elem.attrib.get('visible')),
isoToDatetime(elem.attrib.get('timestamp')) if
parse_timestamps else elem.attrib.get('timestamp'), [], [])
elif elem.tag == 'tag':
obj.tags.append(model.Tag(elem.attrib['k'], elem.attrib['v']))
elif elem.tag == 'nd':
obj.nds.append(int(elem.attrib['ref']))
elif elem.tag == 'relation':
obj = model.Relation(
int(elem.attrib['id']), int(elem.attrib['version']),
int(elem.attrib['changeset']), elem.attrib.get('user'),
maybeInt(elem.attrib.get('uid')),
maybeBool(elem.attrib.get('visible')),
isoToDatetime(elem.attrib.get('timestamp')) if
parse_timestamps else elem.attrib.get('timestamp'), [], [])
elif elem.tag == 'member':
obj.members.append(
model.Member(elem.attrib['type'], int(elem.attrib['ref']),
elem.attrib['role']))
elif elem.tag in ('create', 'modify', 'delete'):
action = elem.tag
elif event == 'end':
if elem.tag == 'node':
yield (action, obj)
obj = None
elif elem.tag == 'way':
yield (action, obj)
obj = None
elif elem.tag == 'relation':
yield (action, obj)
obj = None
elif elem.tag in ('create', 'modify', 'delete'):
action = None
elem.clear()
while elem.getprevious() is not None:
del elem.getparent()[0]
def iter_osm_file(f, parse_timestamps=True):
"""Parse a file-like containing OSM XML and yield one OSM primitive at a time
to the caller."""
obj = None
for event, elem in etree.iterparse(f, events=('start', 'end')):
if event == 'start':
if elem.tag == 'node':
obj = model.Node(
int(elem.attrib['id']), maybeInt(elem.get('version')),
maybeInt(elem.get('changeset')), elem.attrib.get('user'),
maybeInt(elem.attrib.get('uid')),
maybeBool(elem.attrib.get('visible')),
isoToDatetime(elem.attrib.get('timestamp'))
if parse_timestamps else elem.attrib.get('timestamp'),
maybeFloat(elem.get('lat')), maybeFloat(elem.get('lon')),
[])
elif elem.tag == 'way':
obj = model.Way(
int(elem.attrib['id']), maybeInt(elem.get('version')),
maybeInt(elem.get('changeset')), elem.attrib.get('user'),
maybeInt(elem.attrib.get('uid')),
maybeBool(elem.attrib.get('visible')),
isoToDatetime(elem.attrib.get('timestamp')) if
parse_timestamps else elem.attrib.get('timestamp'), [], [])
elif elem.tag == 'tag':
obj.tags.append(model.Tag(elem.attrib['k'], elem.attrib['v']))
elif elem.tag == 'nd':
obj.nds.append(int(elem.attrib['ref']))
elif elem.tag == 'relation':
obj = model.Relation(
int(elem.attrib['id']), maybeInt(elem.get('version')),
maybeInt(elem.get('changeset')), elem.attrib.get('user'),
maybeInt(elem.attrib.get('uid')),
maybeBool(elem.attrib.get('visible')),
isoToDatetime(elem.attrib.get('timestamp')) if
parse_timestamps else elem.attrib.get('timestamp'), [], [])
elif elem.tag == 'member':
obj.members.append(
model.Member(elem.attrib['type'], int(elem.attrib['ref']),
elem.attrib['role']))
elif elem.tag == 'changeset':
obj = model.Changeset(
int(elem.attrib['id']),
isoToDatetime(elem.attrib.get('created_at'))
if parse_timestamps else elem.attrib.get('created_at'),
isoToDatetime(elem.attrib.get('closed_at'))
if parse_timestamps else elem.attrib.get('closed_at'),
maybeBool(elem.attrib['open']),
maybeFloat(elem.get('min_lat')),
maybeFloat(elem.get('max_lat')),
maybeFloat(elem.get('min_lon')),
maybeFloat(elem.get('max_lon')), elem.attrib.get('user'),
maybeInt(elem.attrib.get('uid')), [])
elif event == 'end':
if elem.tag == 'node':
yield obj
obj = None
elif elem.tag == 'way':
yield obj
obj = None
elif elem.tag == 'relation':
yield obj
obj = None
elif elem.tag == 'changeset':
yield obj
obj = None
elem.clear()
while elem.getprevious() is not None:
del elem.getparent()[0]