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|
use crate::prelude::*;
use md5;
impl Uuid {
/// Creates a UUID using a name from a namespace, based on the MD5
/// 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 `v3` feature of this crate
/// to be enabled.
///
/// [`NAMESPACE_DNS`]: #associatedconstant.NAMESPACE_DNS
/// [`NAMESPACE_OID`]: #associatedconstant.NAMESPACE_OID
/// [`NAMESPACE_URL`]: #associatedconstant.NAMESPACE_URL
/// [`NAMESPACE_X500`]: #associatedconstant.NAMESPACE_X500
pub fn new_v3(namespace: &Uuid, name: &[u8]) -> Uuid {
let mut context = md5::Context::new();
context.consume(namespace.as_bytes());
context.consume(name);
let computed = context.compute();
let bytes = computed.into();
let mut builder = crate::Builder::from_bytes(bytes);
builder
.set_variant(Variant::RFC4122)
.set_version(Version::Md5);
builder.build()
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::std::string::ToString;
static FIXTURE: &'static [(&'static Uuid, &'static str, &'static str)] = &[
(
&Uuid::NAMESPACE_DNS,
"example.org",
"04738bdf-b25a-3829-a801-b21a1d25095b",
),
(
&Uuid::NAMESPACE_DNS,
"rust-lang.org",
"c6db027c-615c-3b4d-959e-1a917747ca5a",
),
(
&Uuid::NAMESPACE_DNS,
"42",
"5aab6e0c-b7d3-379c-92e3-2bfbb5572511",
),
(
&Uuid::NAMESPACE_DNS,
"lorem ipsum",
"4f8772e9-b59c-3cc9-91a9-5c823df27281",
),
(
&Uuid::NAMESPACE_URL,
"example.org",
"39682ca1-9168-3da2-a1bb-f4dbcde99bf9",
),
(
&Uuid::NAMESPACE_URL,
"rust-lang.org",
"7ed45aaf-e75b-3130-8e33-ee4d9253b19f",
),
(
&Uuid::NAMESPACE_URL,
"42",
"08998a0c-fcf4-34a9-b444-f2bfc15731dc",
),
(
&Uuid::NAMESPACE_URL,
"lorem ipsum",
"e55ad2e6-fb89-34e8-b012-c5dde3cd67f0",
),
(
&Uuid::NAMESPACE_OID,
"example.org",
"f14eec63-2812-3110-ad06-1625e5a4a5b2",
),
(
&Uuid::NAMESPACE_OID,
"rust-lang.org",
"6506a0ec-4d79-3e18-8c2b-f2b6b34f2b6d",
),
(
&Uuid::NAMESPACE_OID,
"42",
"ce6925a5-2cd7-327b-ab1c-4b375ac044e4",
),
(
&Uuid::NAMESPACE_OID,
"lorem ipsum",
"5dd8654f-76ba-3d47-bc2e-4d6d3a78cb09",
),
(
&Uuid::NAMESPACE_X500,
"example.org",
"64606f3f-bd63-363e-b946-fca13611b6f7",
),
(
&Uuid::NAMESPACE_X500,
"rust-lang.org",
"bcee7a9c-52f1-30c6-a3cc-8c72ba634990",
),
(
&Uuid::NAMESPACE_X500,
"42",
"c1073fa2-d4a6-3104-b21d-7a6bdcf39a23",
),
(
&Uuid::NAMESPACE_X500,
"lorem ipsum",
"02f09a3f-1624-3b1d-8409-44eff7708208",
),
];
#[test]
fn test_new() {
for &(ref ns, ref name, _) in FIXTURE {
let uuid = Uuid::new_v3(*ns, name.as_bytes());
assert_eq!(uuid.get_version().unwrap(), Version::Md5);
assert_eq!(uuid.get_variant().unwrap(), Variant::RFC4122);
}
}
#[test]
fn test_to_hyphenated_string() {
for &(ref ns, ref name, ref expected) in FIXTURE {
let uuid = Uuid::new_v3(*ns, name.as_bytes());
assert_eq!(uuid.to_hyphenated().to_string(), *expected);
}
}
}
|
