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|
try:
import simplejson as json
except ImportError:
import json
import geojson
import geojson.factory
from geojson.mapping import to_mapping
class GeoJSONEncoder(json.JSONEncoder):
def default(self, obj):
return geojson.factory.GeoJSON.to_instance(obj) # NOQA
# Wrap the functions from json, providing encoder, decoders, and
# object creation hooks.
# Here the defaults are set to only permit valid JSON as per RFC 4267
def _enforce_strict_numbers(obj):
raise ValueError(f"Number {obj!r} is not JSON compliant")
def dump(obj, fp, cls=GeoJSONEncoder, allow_nan=False, **kwargs):
return json.dump(to_mapping(obj),
fp, cls=cls, allow_nan=allow_nan, **kwargs)
def dumps(obj, cls=GeoJSONEncoder, allow_nan=False, ensure_ascii=False, **kwargs):
return json.dumps(to_mapping(obj),
cls=cls, allow_nan=allow_nan, ensure_ascii=ensure_ascii, **kwargs)
def load(fp,
cls=json.JSONDecoder,
parse_constant=_enforce_strict_numbers,
object_hook=geojson.base.GeoJSON.to_instance,
**kwargs):
return json.load(fp,
cls=cls, object_hook=object_hook,
parse_constant=parse_constant,
**kwargs)
def loads(s,
cls=json.JSONDecoder,
parse_constant=_enforce_strict_numbers,
object_hook=geojson.base.GeoJSON.to_instance,
**kwargs):
return json.loads(s,
cls=cls, object_hook=object_hook,
parse_constant=parse_constant,
**kwargs)
# Backwards compatibility
PyGFPEncoder = GeoJSONEncoder
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