def decode(file):
''' Decode an MVT file into a list of (WKB, property dict) features.
Result can be passed directly to mapnik.PythonDatasource.wkb_features().
'''
head = file.read(4)
if head != '\x89MVT':
raise Exception('Bad head: "%s"' % head)
body = StringIO(_decompress(file.read(_next_int(file))))
features = []
for i in range(_next_int(body)):
wkb = body.read(_next_int(body))
raw = body.read(_next_int(body))
props = json.loads(raw)
features.append((wkb, props))
return features
def decode(file):
''' Decode an MVT file into a list of (WKB, property dict) features.
Result can be passed directly to mapnik.PythonDatasource.wkb_features().
'''
head = file.read(4)
if head != '\x89MVT':
raise Exception('Bad head: "%s"' % head)
body = StringIO(_decompress(file.read(_next_int(file))))
features = []
for i in range(_next_int(body)):
wkb = body.read(_next_int(body))
raw = body.read(_next_int(body))
props = json.loads(raw)
features.append((wkb, props))
return features
def __init__(self):
try:
self.deflate = lambda data: _decompress(data, -1*_zlib_MAX_WBITS)
except _zlib_error:
self.deflate = lambda data: _decompress(data)