django1/django/contrib/gis/geos/factory.py

33 lines
947 B
Python

from django.contrib.gis.geos.geometry import GEOSGeometry, hex_regex, wkt_regex
def fromfile(file_h):
"""
Given a string file name, returns a GEOSGeometry. The file may contain WKB,
WKT, or HEX.
"""
# If given a file name, get a real handle.
if isinstance(file_h, str):
with open(file_h, 'rb') as file_h:
buf = file_h.read()
else:
buf = file_h.read()
# If we get WKB need to wrap in memoryview(), so run through regexes.
if isinstance(buf, bytes):
try:
decoded = buf.decode()
if wkt_regex.match(decoded) or hex_regex.match(decoded):
return GEOSGeometry(decoded)
except UnicodeDecodeError:
pass
else:
return GEOSGeometry(buf)
return GEOSGeometry(memoryview(buf))
def fromstr(string, **kwargs):
"Given a string value, return a GEOSGeometry object."
return GEOSGeometry(string, **kwargs)