def obj2json(obj, path, **metadata):
"""serialise object to json file"""
from cing.Libs.disk import Path
p = Path(str(path)) # assure path instance
root, f, ext = p.split3()
root.makedirs()
with open(p,'w') as fp:
fp.write(encode(obj, path=str(path), timestamp=str(io.now()), **metadata))
def json2obj(path, referenceObject=None):
"""return object from serialised representation in json file
or None on error
"""
from cing.Libs.disk import Path
p = Path(str(path)) # assure path instance
if not p.exists():
io.error('json2obj: path "{0}" does not exist\n', path)
return None, None
with open(p,'r') as fp:
try:
obj, keyedMetadata = decode(fp.read(), referenceObject=referenceObject)
except ValueError:
io.error('json2obj: trying to decode object from "{0}" failed\n', path)
return None, None
return obj, keyedMetadata