22 lines
669 B
Rust
22 lines
669 B
Rust
use nix_compat::store_path::compress_hash;
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use sha2::{Digest as _, Sha256};
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pub fn sha256_hex(data: &[u8]) -> String {
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let mut hasher = Sha256::new();
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hasher.update(data);
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hex::encode(hasher.finalize())
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}
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pub fn make_store_path(store_dir: &str, ty: &str, hash_hex: &str, name: &str) -> String {
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let s = format!("{}:sha256:{}:{}:{}", ty, hash_hex, store_dir, name);
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let mut hasher = Sha256::new();
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hasher.update(s.as_bytes());
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let hash: [u8; 32] = hasher.finalize().into();
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let compressed = compress_hash::<20>(&hash);
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let encoded = nix_compat::nixbase32::encode(&compressed);
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format!("{}/{}-{}", store_dir, encoded, name)
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}
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