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| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::prelude::<span class="kw-2">*</span>; |
| <span class="kw">use </span>sha1; |
| |
| <span class="kw">impl </span>Uuid { |
| <span class="doccomment">/// 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. |
| /// |
| /// [`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 |
| </span><span class="kw">pub fn </span>new_v5(namespace: <span class="kw-2">&</span>Uuid, name: <span class="kw-2">&</span>[u8]) -> Uuid { |
| <span class="kw">let </span><span class="kw-2">mut </span>hash = sha1::Sha1::new(); |
| |
| hash.update(namespace.as_bytes()); |
| hash.update(name); |
| |
| <span class="kw">let </span>buffer = hash.digest().bytes(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>bytes = <span class="kw">crate</span>::Bytes::default(); |
| bytes.copy_from_slice(<span class="kw-2">&</span>buffer[..<span class="number">16</span>]); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>builder = <span class="kw">crate</span>::Builder::from_bytes(bytes); |
| builder |
| .set_variant(Variant::RFC4122) |
| .set_version(Version::Sha1); |
| |
| builder.build() |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::std::string::ToString; |
| |
| <span class="kw">static </span>FIXTURE: <span class="kw-2">&</span><span class="lifetime">'static </span>[(<span class="kw-2">&</span><span class="lifetime">'static </span>Uuid, <span class="kw-2">&</span><span class="lifetime">'static </span>str, <span class="kw-2">&</span><span class="lifetime">'static </span>str)] = <span class="kw-2">&</span>[ |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_DNS, |
| <span class="string">"example.org"</span>, |
| <span class="string">"aad03681-8b63-5304-89e0-8ca8f49461b5"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_DNS, |
| <span class="string">"rust-lang.org"</span>, |
| <span class="string">"c66bbb60-d62e-5f17-a399-3a0bd237c503"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_DNS, |
| <span class="string">"42"</span>, |
| <span class="string">"7c411b5e-9d3f-50b5-9c28-62096e41c4ed"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_DNS, |
| <span class="string">"lorem ipsum"</span>, |
| <span class="string">"97886a05-8a68-5743-ad55-56ab2d61cf7b"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_URL, |
| <span class="string">"example.org"</span>, |
| <span class="string">"54a35416-963c-5dd6-a1e2-5ab7bb5bafc7"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_URL, |
| <span class="string">"rust-lang.org"</span>, |
| <span class="string">"c48d927f-4122-5413-968c-598b1780e749"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_URL, |
| <span class="string">"42"</span>, |
| <span class="string">"5c2b23de-4bad-58ee-a4b3-f22f3b9cfd7d"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_URL, |
| <span class="string">"lorem ipsum"</span>, |
| <span class="string">"15c67689-4b85-5253-86b4-49fbb138569f"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_OID, |
| <span class="string">"example.org"</span>, |
| <span class="string">"34784df9-b065-5094-92c7-00bb3da97a30"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_OID, |
| <span class="string">"rust-lang.org"</span>, |
| <span class="string">"8ef61ecb-977a-5844-ab0f-c25ef9b8d5d6"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_OID, |
| <span class="string">"42"</span>, |
| <span class="string">"ba293c61-ad33-57b9-9671-f3319f57d789"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_OID, |
| <span class="string">"lorem ipsum"</span>, |
| <span class="string">"6485290d-f79e-5380-9e64-cb4312c7b4a6"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_X500, |
| <span class="string">"example.org"</span>, |
| <span class="string">"e3635e86-f82b-5bbc-a54a-da97923e5c76"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_X500, |
| <span class="string">"rust-lang.org"</span>, |
| <span class="string">"26c9c3e9-49b7-56da-8b9f-a0fb916a71a3"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_X500, |
| <span class="string">"42"</span>, |
| <span class="string">"e4b88014-47c6-5fe0-a195-13710e5f6e27"</span>, |
| ), |
| ( |
| <span class="kw-2">&</span>Uuid::NAMESPACE_X500, |
| <span class="string">"lorem ipsum"</span>, |
| <span class="string">"b11f79a5-1e6d-57ce-a4b5-ba8531ea03d0"</span>, |
| ), |
| ]; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_get_version() { |
| <span class="kw">let </span>uuid = |
| Uuid::new_v5(<span class="kw-2">&</span>Uuid::NAMESPACE_DNS, <span class="string">"rust-lang.org"</span>.as_bytes()); |
| |
| <span class="macro">assert_eq!</span>(uuid.get_version(), <span class="prelude-val">Some</span>(Version::Sha1)); |
| <span class="macro">assert_eq!</span>(uuid.get_version_num(), <span class="number">5</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_hyphenated() { |
| <span class="kw">for </span><span class="kw-2">&</span>(<span class="kw-2">ref </span>ns, <span class="kw-2">ref </span>name, <span class="kw-2">ref </span>expected) <span class="kw">in </span>FIXTURE { |
| <span class="kw">let </span>uuid = Uuid::new_v5(<span class="kw-2">*</span>ns, name.as_bytes()); |
| |
| <span class="macro">assert_eq!</span>(uuid.to_hyphenated().to_string(), <span class="kw-2">*</span>expected) |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_new() { |
| <span class="kw">for </span><span class="kw-2">&</span>(<span class="kw-2">ref </span>ns, <span class="kw-2">ref </span>name, <span class="kw-2">ref </span>u) <span class="kw">in </span>FIXTURE { |
| <span class="kw">let </span>uuid = Uuid::new_v5(<span class="kw-2">*</span>ns, name.as_bytes()); |
| |
| <span class="macro">assert_eq!</span>(uuid.get_variant(), <span class="prelude-val">Some</span>(Variant::RFC4122)); |
| <span class="macro">assert_eq!</span>(uuid.get_version(), <span class="prelude-val">Some</span>(Version::Sha1)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Ok</span>(uuid), u.parse()); |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="uuid" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
