Skip to main content

A bencoder that allows mixing string & bytes without the guesswork

Project description

TypedBencode

Make it easy to create round-trippable bencoding for objects.

Usage

import typed_bencode
from typing import List

my_type = typed_bencode.for_dict(a=str, b=int, c=bytes, d=List[str])
val = {"a": "hello", "b": 123, "c": b'asd', "d":["hey", "there"]}
encoded = my_type.encode(val)
print(encoded) # => b'd1:a5:hello1:bi123e1:c3:asd1:dl3:hey5:thereee'
print(my_type.decode(encoded) == val) # => True

You can even compose types

my_other_type = typed_bencode.for_dict(a=my_type, b=int)

encoded2 = my_other_type.encode({"a": {"a": "helo", "b": 123, "c": b'asd', "d": ["asd", "asd"]}, "b":123})
print(encoded2) # => b'd1:ad1:a4:helo1:bi123e1:c3:asd1:dl3:asd3:asdee1:bi123ee'

Custom types

You can specify a custom type

class DateEncoder(typed_bencode.StringEncoder):
    def to_bytes(self, val):
        return super().to_bytes(val.isoformat())

class DateDecoder(typed_bencode.StringDecoder):
    def from_bytes(self, b):
        v, pos = super().from_bytes(b)
        return (datetime.datetime.fromisoformat(v), pos)

class DateType(typed_bencode.BaseType):
    def __init__(self):
        super().__init__()
        self.encoder = DateEncoder(self)
        self.decoder = DateDecoder(self)

my_type = DateType()
val = datetime.datetime.now()
encoded = my_type.encode(val) # => '26:2018-06-06T12:12:12.363636'

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

typed_bencode-0.0.1.tar.gz (4.2 kB view hashes)

Uploaded source

Built Distribution

typed_bencode-0.0.1-py2.py3-none-any.whl (3.2 kB view hashes)

Uploaded py2 py3

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page