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from django.contrib.gis import memoryview
from django.contrib.gis.geos.geometry import GEOSGeometry, wkt_regex, hex_regex
from django.utils import six
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, six.string_types):
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, returns a GEOSGeometry object."
return GEOSGeometry(string, **kwargs)
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