libmagic(3) is the backend of the file(1) command, which classifies files, e.g.:
sh
$ file assets/rust-logo-128x128-blk.png
assets/rust-logo-128x128-blk.png: PNG image data, 128 x 128, 8-bit/color RGBA, non-interlaced
This project provides libmagic Rust bindings (NOT the file command from the example).
Documentation is rust-magic on Rust CI.
Create a new cargo project (or edit your existing one):
sh
$ cargo new --bin magic-usage && cd magic-usage/
$ $EDITOR Cargo.toml
$ $EDITOR src/main.rs
Add a dependency to your Cargo.toml (see cargo doc):
toml
[dependencies.magic]
version = "0.5.0"
Then use the magic crate like this (in your src/main.rs):
```rust extern crate magic; use magic::{Cookie, flags};
fn main() { let cookie = Cookie::open(flags::NONE).ok().unwrap(); cookie.load(&Path::new("/usr/share/misc/magic")); println!("It's a kind of magic: {}", cookie.file(&Path::new("assets/rust-logo-128x128-blk.png")).ok().unwrap()); } ```
And for this example, build and run it:
sh
$ cargo run
Running `target/magic-usage`
It's a kind of magic: PNG image data, 128 x 128, 8-bit/color RGBA, non-interlaced
This project is licensed under the MIT license (see LICENSE).
The magic-sys crate being used is licensed under the MIT license as well (see LICENSE).
The file/libmagic project is licensed under a modified BSD license (see COPYING).
This crate contains snippets from its magic databases (rust-magic/data/tests/db-images-png is from file/magic/Magdir/images, rust-magic/data/tests/db-python is from file/magic/Magdir/python).