# use-7z
7-Zip archive labels, compression method labels, and extension helpers.
This crate is part of the `use-archive` facade workspace. It exposes 7-Zip-specific primitive labels only. It does not parse 7z headers, handle encryption, read archives, write archives, or extract files.
## Example
```rust
use use_7z::{SevenZipCompressionMethod, SevenZipFormat, is_7z_filename};
assert!(is_7z_filename("bundle.7z"));
assert!(is_7z_filename("bundle.7z.001"));
assert_eq!(SevenZipFormat::SevenZip.as_str(), "7z");
assert_eq!(SevenZipCompressionMethod::Lzma2.as_str(), "lzma2");
```