nix-init/src/license.rs at v0.1.0 · nix-community/nix-init

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use askalono::Store;

use once_cell::sync::Lazy;

use rustc_hash::FxHashMap;

use spdx::{Expression, ParseMode};

use tracing::debug;

use crate::utils::ResultExt;

pub static LICENSE_STORE: Lazy<Option<Store>> = Lazy::new(|| {

Store::from_cache(include_bytes!("../cache/askalono-cache.zstd") as &[_]).ok_warn()

});

pub static NIX_LICENSES: Lazy<FxHashMap<&'static str, &'static str>> = Lazy::new(get_nix_licenses);

include!(env!("NIX_LICENSES"));

pub fn parse_spdx_expression(license: &str, source: &'static str) -> Vec<&'static str> {

Expression::parse_mode(license, ParseMode::LAX)

.ok_warn()

.map_or_else(Vec::new, |expr| {

expr.requirements()

.filter_map(|req| {

let &license = NIX_LICENSES.get(req.req.license.id()?.name)?;

debug!("license from {source}: {license}");

Some(license)

})

.collect()

})

}