Lib.rs

功能齐全的liblz4对Rust的绑定

关于

LZ4压缩算法的Rust API。

• 支持几乎所有的liblz4特性
• 除了liblz4外没有其他依赖
• 在Windows / macOS / Linux上进行了测试

用法

将以下内容添加到您的 Cargo.toml

[dependencies]
lzzzz = "1.0.3"

API文档

功能

• LZ4
  • 压缩（块 / 流式处理）
  • 解压缩（块 / 流式处理）
  • 部分解压缩
  • 自定义字典
• LZ4_HC
  • 压缩（块 / 流式处理）
  • 部分压缩
  • 自定义字典
• LZ4F
  • 压缩
  • 解压缩
  • 自定义字典
  • 流式I/O（Read / BufRead / Write）

示例

块模式

use lzzzz::{lz4, lz4_hc, lz4f};

let data = b"The quick brown fox jumps over the lazy dog.";

// LZ4 compression
let mut comp = Vec::new();
lz4::compress_to_vec(data, &mut comp, lz4::ACC_LEVEL_DEFAULT)?;

// LZ4_HC compression
let mut comp = Vec::new();
lz4_hc::compress_to_vec(data, &mut comp, lz4_hc::CLEVEL_DEFAULT)?;

// LZ4/LZ4_HC decompression
let mut decomp = vec![0; data.len()];
lz4::decompress(&comp, &mut decomp)?;

// LZ4F compression
let prefs = lz4f::Preferences::default();
let mut comp = Vec::new();
lz4f::compress_to_vec(data, &mut comp, &prefs)?;

// LZ4F decompression
let mut decomp = Vec::new();
lz4f::decompress_to_vec(&comp, &mut decomp)?;

流模式

use lzzzz::{lz4, lz4_hc};

let data = b"The quick brown fox jumps over the lazy dog.";

// LZ4 compression
let mut comp = lz4::Compressor::new()?;
let mut buf = Vec::new();
comp.next_to_vec(data, &mut buf, lz4::ACC_LEVEL_DEFAULT)?;

// LZ4_HC compression
let mut comp = lz4_hc::Compressor::new()?;
let mut buf = Vec::new();
comp.next_to_vec(data, &mut buf)?;

// LZ4/LZ4_HC decompression
let mut decomp = lz4::Decompressor::new()?;
let result = decomp.next(&data, data.len())?;

use lzzzz::lz4f::{WriteCompressor, ReadDecompressor, Preferences};
use std::{fs::File, io::prelude::*};

// LZ4F Write-based compression
let mut f = File::create("foo.lz4")?;
let mut w = WriteCompressor::new(&mut f, Preferences::default())?;
w.write_all(b"Hello world!")?;

// LZ4F Read-based decompression
let mut f = File::open("foo.lz4")?;
let mut r = ReadDecompressor::new(&mut f)?;
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;