https://github.com/synodriver/pydensity

https://github.com/synodriver/pydensity

cffi compression cython

Last synced: 3 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/synodriver/pydensity
• Owner: synodriver
• Created: 2022-07-13T07:56:02.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2023-10-13T14:46:07.000Z (over 1 year ago)
• Last Synced: 2024-10-11T11:26:09.300Z (3 months ago)
• Topics: cffi, compression, cython
• Language: Python
• Homepage:
• Size: 405 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.markdown
  • Changelog: changename.py

Awesome Lists containing this project

README

        
✨ pydensity ✨ 


The python binding for density 


[![pypi](https://img.shields.io/pypi/v/pydensity.svg)](https://pypi.org/project/pydensity/)

![python](https://img.shields.io/pypi/pyversions/pydensity)

![implementation](https://img.shields.io/pypi/implementation/pydensity)

![wheel](https://img.shields.io/pypi/wheel/pydensity)

![license](https://img.shields.io/github/license/synodriver/pydensity)

![action](https://img.shields.io/github/workflow/status/synodriver/pydensity/build%20wheel)

## 安装

```bash

pip install pydensity

```

## 使用

- encode

```python

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

```python

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