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Description:

pydensity 0.1.1

✨ pydensity ✨
The python binding for density

安装
pip install pydensity

使用

encode

import pydensity
origin = b"121212121212121"
size = pydensity.decompress_safe_size(len(origin))
data = pydensity.compress(origin, pydensity.Algorithm.lion)
print(pydensity.decompress(data, size))

公开函数
from typing import Any
import enum

class Algorithm(enum.Enum):
chameleon: Any
cheetah: Any
lion: Any

def format_state(state) -> str: ...
def major_version(): ...
def minor_version(): ...
def revision_version(): ...
def get_dictionary_size(algorithm: Algorithm): ...
def compress_safe_size(input_size: int): ...
def decompress_safe_size(input_size: int): ...

class Compressor:
c_state: Any
context: Any
def __init__(self, algorithm: Algorithm, custom_dictionary: bool) -> None: ...
@property
def state(self): ...
def compress(self, data: bytes) -> bytes: ...
def __del__(self) -> None: ...

class DeCompressor:
c_state: Any
context: Any
def __init__(self, data: bytes, custom_dictionary: bool) -> None: ...
@property
def state(self): ...
def decompress(self, data: bytes, decompress_safe_size: int) -> bytes: ...
def __del__(self) -> None: ...

def compress(data: bytes, algorithm: Algorithm) -> bytes: ...
def compress_into(data: bytes, out: bytearray, algorithm: Algorithm) -> int: ...
def decompress(data: bytes, decompress_safe_size: int) -> bytes: ...
def decompress_into(data: bytes, out: bytearray) -> int: ...

本机编译
python -m pip install setuptools wheel cython cffi
git clone https://github.com/synodriver/pydensity
cd pydensity
git submodule update --init --recursive
python setup.py bdist_wheel --use-cython --use-cffi

后端选择
默认由py实现决定，在cpython上自动选择cython后端，在pypy上自动选择cffi后端，使用DENSITY_USE_CFFI环境变量可以强制选择cffi