use crate::Uuid; impl Uuid { /// Creates a UUID using a name from a namespace, based on the SHA-1 hash. /// /// A number of namespaces are available as constants in this crate: /// /// * [`NAMESPACE_DNS`] /// * [`NAMESPACE_OID`] /// * [`NAMESPACE_URL`] /// * [`NAMESPACE_X500`] /// /// Note that usage of this method requires the `v5` feature of this crate /// to be enabled. /// /// # Examples /// /// Generating a SHA1 DNS UUID for `rust-lang.org`: /// /// ``` /// # use uuid::{Uuid, Version}; /// let uuid = Uuid::new_v5(&Uuid::NAMESPACE_DNS, b"rust-lang.org"); /// /// assert_eq!(Some(Version::Sha1), uuid.get_version()); /// ``` /// /// # References /// /// * [Version 3 and 5 UUIDs in RFC4122](https://www.rfc-editor.org/rfc/rfc4122#section-4.3) /// /// [`NAMESPACE_DNS`]: struct.Uuid.html#associatedconst.NAMESPACE_DNS /// [`NAMESPACE_OID`]: struct.Uuid.html#associatedconst.NAMESPACE_OID /// [`NAMESPACE_URL`]: struct.Uuid.html#associatedconst.NAMESPACE_URL /// [`NAMESPACE_X500`]: struct.Uuid.html#associatedconst.NAMESPACE_X500 pub fn new_v5(namespace: &Uuid, name: &[u8]) -> Uuid { crate::Builder::from_sha1_bytes(crate::sha1::hash(namespace.as_bytes(), name)).into_uuid() } } #[cfg(test)] mod tests { use super::*; #[cfg(target_arch = "wasm32")] use wasm_bindgen_test::*; use crate::{std::string::ToString, Variant, Version}; static FIXTURE: &'static [(&'static Uuid, &'static str, &'static str)] = &[ ( &Uuid::NAMESPACE_DNS, "example.org", "aad03681-8b63-5304-89e0-8ca8f49461b5", ), ( &Uuid::NAMESPACE_DNS, "rust-lang.org", "c66bbb60-d62e-5f17-a399-3a0bd237c503", ), ( &Uuid::NAMESPACE_DNS, "42", "7c411b5e-9d3f-50b5-9c28-62096e41c4ed", ), ( &Uuid::NAMESPACE_DNS, "lorem ipsum", "97886a05-8a68-5743-ad55-56ab2d61cf7b", ), ( &Uuid::NAMESPACE_URL, "example.org", "54a35416-963c-5dd6-a1e2-5ab7bb5bafc7", ), ( &Uuid::NAMESPACE_URL, "rust-lang.org", "c48d927f-4122-5413-968c-598b1780e749", ), ( &Uuid::NAMESPACE_URL, "42", "5c2b23de-4bad-58ee-a4b3-f22f3b9cfd7d", ), ( &Uuid::NAMESPACE_URL, "lorem ipsum", "15c67689-4b85-5253-86b4-49fbb138569f", ), ( &Uuid::NAMESPACE_OID, "example.org", "34784df9-b065-5094-92c7-00bb3da97a30", ), ( &Uuid::NAMESPACE_OID, "rust-lang.org", "8ef61ecb-977a-5844-ab0f-c25ef9b8d5d6", ), ( &Uuid::NAMESPACE_OID, "42", "ba293c61-ad33-57b9-9671-f3319f57d789", ), ( &Uuid::NAMESPACE_OID, "lorem ipsum", "6485290d-f79e-5380-9e64-cb4312c7b4a6", ), ( &Uuid::NAMESPACE_X500, "example.org", "e3635e86-f82b-5bbc-a54a-da97923e5c76", ), ( &Uuid::NAMESPACE_X500, "rust-lang.org", "26c9c3e9-49b7-56da-8b9f-a0fb916a71a3", ), ( &Uuid::NAMESPACE_X500, "42", "e4b88014-47c6-5fe0-a195-13710e5f6e27", ), ( &Uuid::NAMESPACE_X500, "lorem ipsum", "b11f79a5-1e6d-57ce-a4b5-ba8531ea03d0", ), ]; #[test] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)] fn test_get_version() { let uuid = Uuid::new_v5(&Uuid::NAMESPACE_DNS, "rust-lang.org".as_bytes()); assert_eq!(uuid.get_version(), Some(Version::Sha1)); assert_eq!(uuid.get_version_num(), 5); } #[test] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)] fn test_hyphenated() { for &(ref ns, ref name, ref expected) in FIXTURE { let uuid = Uuid::new_v5(*ns, name.as_bytes()); assert_eq!(uuid.hyphenated().to_string(), *expected) } } #[test] #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)] fn test_new() { for &(ref ns, ref name, ref u) in FIXTURE { let uuid = Uuid::new_v5(*ns, name.as_bytes()); assert_eq!(uuid.get_version(), Some(Version::Sha1)); assert_eq!(uuid.get_variant(), Variant::RFC4122); assert_eq!(Ok(uuid), u.parse()); } } }