Source code
Revision control
Copy as Markdown
Other Tools
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
///
///
/// [`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());
}
}
}