#decompression #7z #7zip #sevenz

sevenz-rust2

A 7z decompressor/compressor written in pure Rust

6 releases (breaking)

new 0.12.0 Feb 28, 2025
0.11.0 Feb 26, 2025
0.10.0 Feb 26, 2025
0.9.0 Feb 25, 2025
0.7.0 Feb 24, 2025

#89 in Compression

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279 downloads per month

Apache-2.0

555KB
6K SLoC

Contains (DOS exe, 370KB) tests/resources/decompress_x86.exe

Crate Documentation

This project is a 7z compressor/decompressor written in pure Rust.

This is a fork of the original, unmaintained sevenz-rust crate to continue the development and maintenance.

Supported Codecs & filters

Codec Decompression Compression
COPY
LZMA
LZMA2
BROTLI (*)
BZIP2 (*)
DEFLATE (*)
PPMD (*)
LZ4 (*)
ZSTD (*)

(*) Require optional cargo feature.

Filter Decompression Compression
BCJ X86
BCJ PPC
BCJ IA64
BCJ ARM
BCJ ARM_THUMB
BCJ SPARC
DELTA
BCJ2

Usage

[dependencies]
sevenz-rust = { version = "0.11" }

Decompress source file "data/sample.7z" to destination path "data/sample":

sevenz_rust2::decompress_file("data/sample.7z", "data/sample").expect("complete");

Decompress an encrypted 7z file

Add the 'aes256' feature:

[dependencies]
sevenz-rust2 = { version = "0.11", features = ["aes256"] }
sevenz_rust2::decompress_file_with_password("path/to/encrypted.7z", "path/to/output", "password".into()).expect("complete");

Compression

Add the 'compress' feature:

[dependencies]
sevenz-rust2 = { version = "0.11", features = ["compress"] }

Use the helper function to create a 7z file with source path:

sevenz_rust2::compress_to_path("examples/data/sample", "examples/data/sample.7z").expect("compress ok");

Compress with AES encryption

Add the 'compress' and 'aes256' feature:

[dependencies]
sevenz-rust2 = { version = "0.11", features = ["compress", "aes256"] }

Use the helper function to create a 7z file with source path and password:

sevenz_rust2::compress_to_path_encrypted("examples/data/sample", "examples/data/sample.7z", "password".into()).expect("compress ok");

Advanced Usage

Solid compression

Solid archives can in theory provide better compression rates, but decompressing a file needs all previous data to also be decompressed.

use sevenz_rust2::*;

let mut sz = SevenZWriter::create("dest.7z").expect("create writer ok");
sz.push_source_path("path/to/compress", | _ | true).expect("pack ok");
sz.finish().expect("compress ok");

Configure the compression methods

With encryption and lzma2 options:

use sevenz_rust2::*;

let mut sz = SevenZWriter::create("dest.7z").expect("create writer ok");
sz.set_content_methods(vec![
    sevenz_rust::AesEncoderOptions::new("sevenz-rust".into()).into(),
    lzma::LZMA2Options::with_preset(9).into(),
]);
sz.push_source_path("path/to/compress", | _ | true).expect("pack ok");
sz.finish().expect("compress ok");

Licence

Licensed under the Apache License, Version 2.0.

Dependencies

~2–11MB
~157K SLoC