newsmile 1.1

A Package containing tools for decoding/encoding Smile Format data to/from python object

NewSmile

Another Smile Format Decoder/Encoder for Python 3

Encoding

• Import SmileEncoder

from newsmile import SmileEncoder

• Create Encoder object, with arguments:
  • raw_binary (bool), default = False: contains binary data
  • shared_values (bool), default = False: maintains shared values buffer and references
  • shared_keys (bool), default = True: maintains shared keys buffer and references
  • float_precision (0|4|8), default = 0: float values precisions (0=auto)
  • encoding (string), default = 'utf-8': encoding used for unicode values and keys

(Note: specs implies shared values are defaulted to False)

encoder = SmileEncoder(shared_values=True)

• Encode data

If data is a dictionnary, it is encoded as is. If data is a string, it is considered as a json string.

# Example with a dictionary
an_object = {'a': 123, 'b':[4, 5, 6], 'c':{'d': 'a_string', 'e':None}}
result = encoder.encode(an_object)
print(result)

>>> b':)\n\x03\xfa\x80a$\x03\xb6\x80b\xf8\xc8\xca\xcc\xf9\x80c\xfa\x80dGa_string\x80e!\xfb\xfb'

# Example with json
import json
an_object = {'a': 123, 'b':[4, 5, 6], 'c':{'d': 'a_string', 'e':None}}
result = encoder.encode(json.dumps(an_object))
print(result)

>>> b':)\n\x03\xfa\x80a$\x03\xb6\x80b\xf8\xc8\xca\xcc\xf9\x80c\xfa\x80dGa_string\x80e!\xfb\xfb'

Decoding

• Import SmileEncoder

from newsmile import SmileDecoder

• Create Decoder object, with arguments:
  • encoding (string), default = 'utf-8': encoding used for unicode values and keys

decoder = SmileDecoder()

• Decode value

decoder.decode(result)
decoded_object = decoder.decode(result)
print(decoded_object)

>>> {'a': 123, 'b': [4, 5, 6], 'c': {'d': 'a_string', 'e': None}}

Encoding example, from file

import json
from newsmile import SmileEncoder
encoder = SmileEncoder(shared_values=True, encoding='iso-8859-1')
dico = {'a': 1, 'b': [2, 3, 4], 'c': {'subkey': 'a string'}}
smile_data = encoder.encode(json.dumps(dico))

Decoding example, from file

from newsmile import SmileDecoder
decoder = SmileDecoder()
with open('smile-data-file', 'rb') as smile_file:
    data = decoder.decode(smile_file.read())

Running tests

cd tests

python test.py