team-3/src/c3nav/mapdata/utils/json.py
2017-11-02 13:44:44 +01:00

54 lines
2 KiB
Python

import json
from collections import OrderedDict
def _preencode(data, magic_marker, in_coords=False, in_groups=False):
if isinstance(data, dict):
data = data.copy()
for name, value in tuple(data.items()):
if name in ('bounds', 'point', 'locations') and isinstance(value, (tuple, list)):
data[name] = magic_marker+json.dumps(value)+magic_marker
else:
data[name] = _preencode(value, magic_marker,
in_coords=(name == 'coordinates'), in_groups=(name == 'groups'))
return data
elif isinstance(data, (tuple, list)):
if (in_coords and data and isinstance(data[0], (int, float))) or in_groups:
return magic_marker+json.dumps(data)+magic_marker
else:
return tuple(_preencode(value, magic_marker, in_coords) for value in data)
else:
return data
def json_encoder_reindent(method, data, *args, **kwargs):
magic_marker = '***JSON_MAGIC_MARKER***'
test_encode = json.dumps(data)
while magic_marker in test_encode:
magic_marker += '*'
result = method(_preencode(data, magic_marker), *args, **kwargs)
if type(result) == str:
return result.replace('"'+magic_marker, '').replace(magic_marker+'"', '')
else:
magic_marker = magic_marker.encode()
return result.replace(b'"'+magic_marker, b'').replace(magic_marker+b'"', b'')
def format_geojson(data, round=True):
coordinates = data.get('coordinates', None)
if coordinates is not None:
return OrderedDict((
('type', data['type']),
('coordinates', round_coordinates(data['coordinates']) if round else data['coordinates']),
))
return OrderedDict((
('type', data['type']),
('geometries', [format_geojson(geometry, round=round) for geometry in data['geometries']]),
))
def round_coordinates(data):
if isinstance(data, (list, tuple)):
return tuple(round_coordinates(item) for item in data)
else:
return round(data, 2)