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// Copyright 2013-2014 The Rust Project Developers.
// Copyright 2018 The Uuid Project Developers.
//
// See the COPYRIGHT file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Generate and parse UUIDs.
//!
//! Provides support for Universally Unique Identifiers (UUIDs). A UUID is a
//! unique 128-bit number, stored as 16 octets. UUIDs are used to assign
//! unique identifiers to entities without requiring a central allocating
//! authority.
//!
//! They are particularly useful in distributed systems, though can be used in
//! disparate areas, such as databases and network protocols. Typically a UUID
//! is displayed in a readable string form as a sequence of hexadecimal digits,
//! separated into groups by hyphens.
//!
//! The uniqueness property is not strictly guaranteed, however for all
//! practical purposes, it can be assumed that an unintentional collision would
//! be extremely unlikely.
//!
//! # Dependencies
//!
//! By default, this crate depends on nothing but `std` and cannot generate
//! UUIDs. You need to enable the following Cargo features to enable
//! various pieces of functionality:
//!
//! * `v1` - adds the [`Uuid::new_v1`] function and the ability to create a V1
//! using an implementation of [`v1::ClockSequence`] (usually
//! [`v1::Context`]) and a timestamp from `time::timespec`.
//! * `v3` - adds the [`Uuid::new_v3`] function and the ability to create a V3
//! UUID based on the MD5 hash of some data.
//! * `v4` - adds the [`Uuid::new_v4`] function and the ability to randomly
//! generate a UUID.
//! * `v5` - adds the [`Uuid::new_v5`] function and the ability to create a V5
//! UUID based on the SHA1 hash of some data.
//! * `serde` - adds the ability to serialize and deserialize a UUID using the
//! `serde` crate.
//!
//! For WebAssembly, enable one of the following features depending
//! on your JavaScript interop toolchain of choice:
//!
//! * `stdweb` - for [`stdweb`] combined with [`cargo-web`]
//! * `wasm-bindgen` - for [`wasm-bindgen`]
//!
//! By default, `uuid` can be depended on with:
//!
//! ```toml
//! [dependencies]
//! uuid = "0.8"
//! ```
//!
//! To activate various features, use syntax like:
//!
//! ```toml
//! [dependencies]
//! uuid = { version = "0.8", features = ["serde", "v4"] }
//! ```
//!
//! You can disable default features with:
//!
//! ```toml
//! [dependencies]
//! uuid = { version = "0.8", default-features = false }
//! ```
//!
//! # Examples
//!
//! To parse a UUID given in the simple format and print it as a urn:
//!
//! ```rust
//! use uuid::Uuid;
//!
//! fn main() -> Result<(), uuid::Error> {
//! let my_uuid =
//! Uuid::parse_str("936DA01F9ABD4d9d80C702AF85C822A8")?;
//! println!("{}", my_uuid.to_urn());
//! Ok(())
//! }
//! ```
//!
//! To create a new random (V4) UUID and print it out in hexadecimal form:
//!
//! ```ignore,rust
//! // Note that this requires the `v4` feature enabled in the uuid crate.
//!
//! use uuid::Uuid;
//!
//! fn main() -> Result<(), Box<dyn std::error::Error>> {
//! #[cfg(feature = "v4")] {
//! let my_uuid = Uuid::new_v4()?;
//! println!("{}", my_uuid);
//! }
//! Ok(())
//! }
//! ```
//!
//! # Strings
//!
//! Examples of string representations:
//!
//! * simple: `936DA01F9ABD4d9d80C702AF85C822A8`
//! * hyphenated: `550e8400-e29b-41d4-a716-446655440000`
//! * urn: `urn:uuid:F9168C5E-CEB2-4faa-B6BF-329BF39FA1E4`
//!
//! # References
//!
//! * [Wikipedia: Universally Unique Identifier](http://en.wikipedia.org/wiki/Universally_unique_identifier)
//! * [RFC4122: A Universally Unique IDentifier (UUID) URN Namespace](http://tools.ietf.org/html/rfc4122)
//!
//! [`wasm-bindgen`]: https://crates.io/crates/wasm-bindgen
//! [`cargo-web`]: https://crates.io/crates/cargo-web
//! [`stdweb`]: https://crates.io/crates/stdweb
//! [`Uuid`]: struct.Uuid.html
//! [`Uuid::new_v1`]: struct.Uuid.html#method.new_v1
//! [`Uuid::new_v3`]: struct.Uuid.html#method.new_v3
//! [`Uuid::new_v4`]: struct.Uuid.html#method.new_v4
//! [`Uuid::new_v5`]: struct.Uuid.html#method.new_v5
//! [`v1::ClockSequence`]: v1/trait.ClockSequence.html
//! [`v1::Context`]: v1/struct.Context.html
#![no_std]
#![deny(missing_debug_implementations, missing_docs)]
#![doc(
html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
html_favicon_url = "https://www.rust-lang.org/favicon.ico",
html_root_url = "https://docs.rs/uuid/0.8.2"
)]
#[cfg(any(feature = "std", test))]
#[macro_use]
extern crate std;
#[cfg(all(not(feature = "std"), not(test)))]
#[macro_use]
extern crate core as std;
mod builder;
mod error;
mod parser;
mod prelude;
pub mod adapter;
#[cfg(feature = "v1")]
pub mod v1;
#[cfg(feature = "serde")]
mod serde_support;
#[cfg(feature = "slog")]
mod slog_support;
#[cfg(test)]
mod test_util;
#[cfg(all(
feature = "v3",
any(
not(target_arch = "wasm32"),
target_os = "wasi",
all(
target_arch = "wasm32",
any(feature = "stdweb", feature = "wasm-bindgen")
)
)
))]
mod v3;
#[cfg(all(
feature = "v4",
any(
not(target_arch = "wasm32"),
target_os = "wasi",
all(
target_arch = "wasm32",
any(feature = "stdweb", feature = "wasm-bindgen")
)
)
))]
mod v4;
#[cfg(all(
feature = "v5",
any(
not(target_arch = "wasm32"),
target_os = "wasi",
all(
target_arch = "wasm32",
any(feature = "stdweb", feature = "wasm-bindgen")
)
)
))]
mod v5;
#[cfg(all(windows, feature = "winapi"))]
mod winapi_support;
use crate::std::{fmt, str};
pub use crate::error::Error;
/// A builder struct for creating a UUID.
///
/// # Examples
///
/// Creating a v4 UUID from externally generated bytes:
///
/// ```
/// use uuid::{Builder, Variant, Version};
///
/// # let rng = || [
/// # 70, 235, 208, 238, 14, 109, 67, 201, 185, 13, 204, 195, 90,
/// # 145, 63, 62,
/// # ];
/// let random_bytes = rng();
/// let uuid = Builder::from_bytes(random_bytes)
/// .set_variant(Variant::RFC4122)
/// .set_version(Version::Random)
/// .build();
/// ```
#[allow(missing_copy_implementations)]
#[derive(Debug)]
pub struct Builder(Bytes);
/// A 128-bit (16 byte) buffer containing the ID.
pub type Bytes = [u8; 16];
/// The version of the UUID, denoting the generating algorithm.
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum Version {
/// Special case for `nil` UUID.
Nil = 0,
/// Version 1: MAC address.
Mac,
/// Version 2: DCE Security.
Dce,
/// Version 3: MD5 hash.
Md5,
/// Version 4: Random.
Random,
/// Version 5: SHA-1 hash.
Sha1,
}
/// The reserved variants of UUIDs.
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum Variant {
/// Reserved by the NCS for backward compatibility.
NCS = 0,
/// As described in the RFC4122 Specification (default).
RFC4122,
/// Reserved by Microsoft for backward compatibility.
Microsoft,
/// Reserved for future expansion.
Future,
}
/// A Universally Unique Identifier (UUID).
#[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[repr(transparent)]
pub struct Uuid(Bytes);
impl Uuid {
/// UUID namespace for Domain Name System (DNS).
pub const NAMESPACE_DNS: Self = Uuid([
0x6b, 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0,
0x4f, 0xd4, 0x30, 0xc8,
]);
/// UUID namespace for ISO Object Identifiers (OIDs).
pub const NAMESPACE_OID: Self = Uuid([
0x6b, 0xa7, 0xb8, 0x12, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0,
0x4f, 0xd4, 0x30, 0xc8,
]);
/// UUID namespace for Uniform Resource Locators (URLs).
pub const NAMESPACE_URL: Self = Uuid([
0x6b, 0xa7, 0xb8, 0x11, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0,
0x4f, 0xd4, 0x30, 0xc8,
]);
/// UUID namespace for X.500 Distinguished Names (DNs).
pub const NAMESPACE_X500: Self = Uuid([
0x6b, 0xa7, 0xb8, 0x14, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00, 0xc0,
0x4f, 0xd4, 0x30, 0xc8,
]);
/// Returns the variant of the UUID structure.
///
/// This determines the interpretation of the structure of the UUID.
/// Currently only the RFC4122 variant is generated by this module.
///
/// * [Variant Reference](http://tools.ietf.org/html/rfc4122#section-4.1.1)
pub fn get_variant(&self) -> Option<Variant> {
match self.as_bytes()[8] {
x if x & 0x80 == 0x00 => Some(Variant::NCS),
x if x & 0xc0 == 0x80 => Some(Variant::RFC4122),
x if x & 0xe0 == 0xc0 => Some(Variant::Microsoft),
x if x & 0xe0 == 0xe0 => Some(Variant::Future),
_ => None,
}
}
/// Returns the version number of the UUID.
///
/// This represents the algorithm used to generate the contents.
///
/// Currently only the Random (V4) algorithm is supported by this
/// module. There are security and privacy implications for using
/// older versions - see [Wikipedia: Universally Unique Identifier](
/// http://en.wikipedia.org/wiki/Universally_unique_identifier) for
/// details.
///
/// * [Version Reference](http://tools.ietf.org/html/rfc4122#section-4.1.3)
pub const fn get_version_num(&self) -> usize {
(self.as_bytes()[6] >> 4) as usize
}
/// Returns the version of the UUID.
///
/// This represents the algorithm used to generate the contents
pub fn get_version(&self) -> Option<Version> {
let v = self.as_bytes()[6] >> 4;
match v {
0 if self.is_nil() => Some(Version::Nil),
1 => Some(Version::Mac),
2 => Some(Version::Dce),
3 => Some(Version::Md5),
4 => Some(Version::Random),
5 => Some(Version::Sha1),
_ => None,
}
}
/// Returns the four field values of the UUID in big-endian order.
///
/// These values can be passed to the `from_fields()` method to get the
/// original `Uuid` back.
///
/// * The first field value represents the first group of (eight) hex
/// digits, taken as a big-endian `u32` value. For V1 UUIDs, this field
/// represents the low 32 bits of the timestamp.
/// * The second field value represents the second group of (four) hex
/// digits, taken as a big-endian `u16` value. For V1 UUIDs, this field
/// represents the middle 16 bits of the timestamp.
/// * The third field value represents the third group of (four) hex digits,
/// taken as a big-endian `u16` value. The 4 most significant bits give
/// the UUID version, and for V1 UUIDs, the last 12 bits represent the
/// high 12 bits of the timestamp.
/// * The last field value represents the last two groups of four and twelve
/// hex digits, taken in order. The first 1-3 bits of this indicate the
/// UUID variant, and for V1 UUIDs, the next 13-15 bits indicate the clock
/// sequence and the last 48 bits indicate the node ID.
///
/// # Examples
///
/// ```
/// use uuid::Uuid;
///
/// fn main() -> Result<(), uuid::Error> {
/// let uuid = Uuid::nil();
/// assert_eq!(uuid.as_fields(), (0, 0, 0, &[0u8; 8]));
///
/// let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
/// assert_eq!(
/// uuid.as_fields(),
/// (
/// 0x936DA01F,
/// 0x9ABD,
/// 0x4D9D,
/// b"\x80\xC7\x02\xAF\x85\xC8\x22\xA8"
/// )
/// );
///
/// Ok(())
/// }
/// ```
pub fn as_fields(&self) -> (u32, u16, u16, &[u8; 8]) {
let d1 = u32::from(self.as_bytes()[0]) << 24
| u32::from(self.as_bytes()[1]) << 16
| u32::from(self.as_bytes()[2]) << 8
| u32::from(self.as_bytes()[3]);
let d2 =
u16::from(self.as_bytes()[4]) << 8 | u16::from(self.as_bytes()[5]);
let d3 =
u16::from(self.as_bytes()[6]) << 8 | u16::from(self.as_bytes()[7]);
let d4: &[u8; 8] =
unsafe { &*(self.as_bytes()[8..16].as_ptr() as *const [u8; 8]) };
(d1, d2, d3, d4)
}
/// Returns the four field values of the UUID in little-endian order.
///
/// The bytes in the returned integer fields will
/// be converted from big-endian order.
///
/// # Examples
///
/// ```
/// use uuid::Uuid;
///
/// fn main() -> Result<(), uuid::Error> {
/// let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
/// assert_eq!(
/// uuid.to_fields_le(),
/// (
/// 0x1FA06D93,
/// 0xBD9A,
/// 0x9D4D,
/// b"\x80\xC7\x02\xAF\x85\xC8\x22\xA8"
/// )
/// );
/// Ok(())
/// }
/// ```
pub fn to_fields_le(&self) -> (u32, u16, u16, &[u8; 8]) {
let d1 = u32::from(self.as_bytes()[0])
| u32::from(self.as_bytes()[1]) << 8
| u32::from(self.as_bytes()[2]) << 16
| u32::from(self.as_bytes()[3]) << 24;
let d2 =
u16::from(self.as_bytes()[4]) | u16::from(self.as_bytes()[5]) << 8;
let d3 =
u16::from(self.as_bytes()[6]) | u16::from(self.as_bytes()[7]) << 8;
let d4: &[u8; 8] =
unsafe { &*(self.as_bytes()[8..16].as_ptr() as *const [u8; 8]) };
(d1, d2, d3, d4)
}
/// Returns a 128bit value containing the UUID data.
///
/// The bytes in the UUID will be packed into a `u128`, like the
/// [`Uuid::as_bytes`] method.
///
/// # Examples
///
/// ```
/// use uuid::Uuid;
///
/// fn main() -> Result<(), uuid::Error> {
/// let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
/// assert_eq!(
/// uuid.as_u128(),
/// 0x936DA01F9ABD4D9D80C702AF85C822A8,
/// );
/// Ok(())
/// }
/// ```
pub fn as_u128(&self) -> u128 {
u128::from(self.as_bytes()[0]) << 120
| u128::from(self.as_bytes()[1]) << 112
| u128::from(self.as_bytes()[2]) << 104
| u128::from(self.as_bytes()[3]) << 96
| u128::from(self.as_bytes()[4]) << 88
| u128::from(self.as_bytes()[5]) << 80
| u128::from(self.as_bytes()[6]) << 72
| u128::from(self.as_bytes()[7]) << 64
| u128::from(self.as_bytes()[8]) << 56
| u128::from(self.as_bytes()[9]) << 48
| u128::from(self.as_bytes()[10]) << 40
| u128::from(self.as_bytes()[11]) << 32
| u128::from(self.as_bytes()[12]) << 24
| u128::from(self.as_bytes()[13]) << 16
| u128::from(self.as_bytes()[14]) << 8
| u128::from(self.as_bytes()[15])
}
/// Returns a 128bit little-endian value containing the UUID data.
///
/// The bytes in the UUID will be reversed and packed into a `u128`.
/// Note that this will produce a different result than
/// [`Uuid::to_fields_le`], because the entire UUID is reversed, rather
/// than reversing the individual fields in-place.
///
/// # Examples
///
/// ```
/// use uuid::Uuid;
///
/// fn main() -> Result<(), uuid::Error> {
/// let uuid = Uuid::parse_str("936DA01F-9ABD-4D9D-80C7-02AF85C822A8")?;
///
/// assert_eq!(
/// uuid.to_u128_le(),
/// 0xA822C885AF02C7809D4DBD9A1FA06D93,
/// );
/// Ok(())
/// }
/// ```
pub fn to_u128_le(&self) -> u128 {
u128::from(self.as_bytes()[0])
| u128::from(self.as_bytes()[1]) << 8
| u128::from(self.as_bytes()[2]) << 16
| u128::from(self.as_bytes()[3]) << 24
| u128::from(self.as_bytes()[4]) << 32
| u128::from(self.as_bytes()[5]) << 40
| u128::from(self.as_bytes()[6]) << 48
| u128::from(self.as_bytes()[7]) << 56
| u128::from(self.as_bytes()[8]) << 64
| u128::from(self.as_bytes()[9]) << 72
| u128::from(self.as_bytes()[10]) << 80
| u128::from(self.as_bytes()[11]) << 88
| u128::from(self.as_bytes()[12]) << 96
| u128::from(self.as_bytes()[13]) << 104
| u128::from(self.as_bytes()[14]) << 112
| u128::from(self.as_bytes()[15]) << 120
}
/// Returns an array of 16 octets containing the UUID data.
pub const fn as_bytes(&self) -> &Bytes {
&self.0
}
/// Tests if the UUID is nil.
pub fn is_nil(&self) -> bool {
self.as_bytes().iter().all(|&b| b == 0)
}
/// A buffer that can be used for `encode_...` calls, that is
/// guaranteed to be long enough for any of the adapters.
///
/// # Examples
///
/// ```rust
/// use uuid::Uuid;
///
/// let uuid = Uuid::nil();
///
/// assert_eq!(
/// uuid.to_simple().encode_lower(&mut Uuid::encode_buffer()),
/// "00000000000000000000000000000000"
/// );
///
/// assert_eq!(
/// uuid.to_hyphenated()
/// .encode_lower(&mut Uuid::encode_buffer()),
/// "00000000-0000-0000-0000-000000000000"
/// );
///
/// assert_eq!(
/// uuid.to_urn().encode_lower(&mut Uuid::encode_buffer()),
/// "urn:uuid:00000000-0000-0000-0000-000000000000"
/// );
/// ```
pub const fn encode_buffer() -> [u8; adapter::Urn::LENGTH] {
[0; adapter::Urn::LENGTH]
}
}
impl fmt::Debug for Uuid {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::LowerHex::fmt(self, f)
}
}
impl fmt::Display for Uuid {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::LowerHex::fmt(self, f)
}
}
impl fmt::Display for Variant {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
Variant::NCS => write!(f, "NCS"),
Variant::RFC4122 => write!(f, "RFC4122"),
Variant::Microsoft => write!(f, "Microsoft"),
Variant::Future => write!(f, "Future"),
}
}
}
impl fmt::LowerHex for Uuid {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::LowerHex::fmt(&self.to_hyphenated_ref(), f)
}
}
impl fmt::UpperHex for Uuid {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::UpperHex::fmt(&self.to_hyphenated_ref(), f)
}
}
impl str::FromStr for Uuid {
type Err = Error;
fn from_str(uuid_str: &str) -> Result<Self, Self::Err> {
Uuid::parse_str(uuid_str)
}
}
impl Default for Uuid {
#[inline]
fn default() -> Self {
Uuid::nil()
}
}
#[cfg(test)]
mod tests {
use crate::{
prelude::*,
std::string::{String, ToString},
test_util,
};
macro_rules! check {
($buf:ident, $format:expr, $target:expr, $len:expr, $cond:expr) => {
$buf.clear();
write!($buf, $format, $target).unwrap();
assert!($buf.len() == $len);
assert!($buf.chars().all($cond), "{}", $buf);
};
}
#[test]
fn test_uuid_compare() {
let uuid1 = test_util::new();
let uuid2 = test_util::new2();
assert_eq!(uuid1, uuid1);
assert_eq!(uuid2, uuid2);
assert_ne!(uuid1, uuid2);
assert_ne!(uuid2, uuid1);
}
#[test]
fn test_uuid_default() {
let default_uuid = Uuid::default();
let nil_uuid = Uuid::nil();
assert_eq!(default_uuid, nil_uuid);
}
#[test]
fn test_uuid_display() {
use super::fmt::Write;
let uuid = test_util::new();
let s = uuid.to_string();
let mut buffer = String::new();
assert_eq!(s, uuid.to_hyphenated().to_string());
check!(buffer, "{}", uuid, 36, |c| c.is_lowercase()
|| c.is_digit(10)
|| c == '-');
}
#[test]
fn test_uuid_lowerhex() {
use super::fmt::Write;
let mut buffer = String::new();
let uuid = test_util::new();
check!(buffer, "{:x}", uuid, 36, |c| c.is_lowercase()
|| c.is_digit(10)
|| c == '-');
}
// noinspection RsAssertEqual
#[test]
fn test_uuid_operator_eq() {
let uuid1 = test_util::new();
let uuid1_dup = uuid1.clone();
let uuid2 = test_util::new2();
assert!(uuid1 == uuid1);
assert!(uuid1 == uuid1_dup);
assert!(uuid1_dup == uuid1);
assert!(uuid1 != uuid2);
assert!(uuid2 != uuid1);
assert!(uuid1_dup != uuid2);
assert!(uuid2 != uuid1_dup);
}
#[test]
fn test_uuid_to_string() {
use super::fmt::Write;
let uuid = test_util::new();
let s = uuid.to_string();
let mut buffer = String::new();
assert_eq!(s.len(), 36);
check!(buffer, "{}", s, 36, |c| c.is_lowercase()
|| c.is_digit(10)
|| c == '-');
}
#[test]
fn test_uuid_upperhex() {
use super::fmt::Write;
let mut buffer = String::new();
let uuid = test_util::new();
check!(buffer, "{:X}", uuid, 36, |c| c.is_uppercase()
|| c.is_digit(10)
|| c == '-');
}
#[test]
fn test_nil() {
let nil = Uuid::nil();
let not_nil = test_util::new();
let from_bytes = Uuid::from_bytes([
4, 54, 67, 12, 43, 2, 2, 76, 32, 50, 87, 5, 1, 33, 43, 87,
]);
assert_eq!(from_bytes.get_version(), None);
assert!(nil.is_nil());
assert!(!not_nil.is_nil());
assert_eq!(nil.get_version(), Some(Version::Nil));
assert_eq!(not_nil.get_version(), Some(Version::Random))
}
#[test]
fn test_predefined_namespaces() {
assert_eq!(
Uuid::NAMESPACE_DNS.to_hyphenated().to_string(),
"6ba7b810-9dad-11d1-80b4-00c04fd430c8"
);
assert_eq!(
Uuid::NAMESPACE_URL.to_hyphenated().to_string(),
"6ba7b811-9dad-11d1-80b4-00c04fd430c8"
);
assert_eq!(
Uuid::NAMESPACE_OID.to_hyphenated().to_string(),
"6ba7b812-9dad-11d1-80b4-00c04fd430c8"
);
assert_eq!(
Uuid::NAMESPACE_X500.to_hyphenated().to_string(),
"6ba7b814-9dad-11d1-80b4-00c04fd430c8"
);
}
#[cfg(feature = "v3")]
#[test]
fn test_get_version_v3() {
let uuid =
Uuid::new_v3(&Uuid::NAMESPACE_DNS, "rust-lang.org".as_bytes());
assert_eq!(uuid.get_version().unwrap(), Version::Md5);
assert_eq!(uuid.get_version_num(), 3);
}
#[test]
fn test_get_variant() {
let uuid1 = test_util::new();
let uuid2 =
Uuid::parse_str("550e8400-e29b-41d4-a716-446655440000").unwrap();
let uuid3 =
Uuid::parse_str("67e55044-10b1-426f-9247-bb680e5fe0c8").unwrap();
let uuid4 =
Uuid::parse_str("936DA01F9ABD4d9dC0C702AF85C822A8").unwrap();
let uuid5 =
Uuid::parse_str("F9168C5E-CEB2-4faa-D6BF-329BF39FA1E4").unwrap();
let uuid6 =
Uuid::parse_str("f81d4fae-7dec-11d0-7765-00a0c91e6bf6").unwrap();
assert_eq!(uuid1.get_variant().unwrap(), Variant::RFC4122);
assert_eq!(uuid2.get_variant().unwrap(), Variant::RFC4122);
assert_eq!(uuid3.get_variant().unwrap(), Variant::RFC4122);
assert_eq!(uuid4.get_variant().unwrap(), Variant::Microsoft);
assert_eq!(uuid5.get_variant().unwrap(), Variant::Microsoft);
assert_eq!(uuid6.get_variant().unwrap(), Variant::NCS);
}
#[test]
fn test_to_simple_string() {
let uuid1 = test_util::new();
let s = uuid1.to_simple().to_string();
assert_eq!(s.len(), 32);
assert!(s.chars().all(|c| c.is_digit(16)));
}
#[test]
fn test_to_hyphenated_string() {
let uuid1 = test_util::new();
let s = uuid1.to_hyphenated().to_string();
assert!(s.len() == 36);
assert!(s.chars().all(|c| c.is_digit(16) || c == '-'));
}
#[test]
fn test_upper_lower_hex() {
use std::fmt::Write;
let mut buf = String::new();
let u = test_util::new();
macro_rules! check {
($buf:ident, $format:expr, $target:expr, $len:expr, $cond:expr) => {
$buf.clear();
write!($buf, $format, $target).unwrap();
assert!(buf.len() == $len);
assert!($buf.chars().all($cond), "{}", $buf);
};
}
check!(buf, "{:X}", u, 36, |c| c.is_uppercase()
|| c.is_digit(10)
|| c == '-');
check!(buf, "{:X}", u.to_hyphenated(), 36, |c| c.is_uppercase()
|| c.is_digit(10)
|| c == '-');
check!(buf, "{:X}", u.to_simple(), 32, |c| c.is_uppercase()
|| c.is_digit(10));
check!(buf, "{:x}", u.to_hyphenated(), 36, |c| c.is_lowercase()
|| c.is_digit(10)
|| c == '-');
check!(buf, "{:x}", u.to_simple(), 32, |c| c.is_lowercase()
|| c.is_digit(10));
}
#[test]
fn test_to_urn_string() {
let uuid1 = test_util::new();
let ss = uuid1.to_urn().to_string();
let s = &ss[9..];
assert!(ss.starts_with("urn:uuid:"));
assert_eq!(s.len(), 36);
assert!(s.chars().all(|c| c.is_digit(16) || c == '-'));
}
#[test]
fn test_to_simple_string_matching() {
let uuid1 = test_util::new();
let hs = uuid1.to_hyphenated().to_string();
let ss = uuid1.to_simple().to_string();
let hsn = hs.chars().filter(|&c| c != '-').collect::<String>();
assert_eq!(hsn, ss);
}
#[test]
fn test_string_roundtrip() {
let uuid = test_util::new();
let hs = uuid.to_hyphenated().to_string();
let uuid_hs = Uuid::parse_str(&hs).unwrap();
assert_eq!(uuid_hs, uuid);
let ss = uuid.to_string();
let uuid_ss = Uuid::parse_str(&ss).unwrap();
assert_eq!(uuid_ss, uuid);
}
#[test]
fn test_from_fields() {
let d1: u32 = 0xa1a2a3a4;
let d2: u16 = 0xb1b2;
let d3: u16 = 0xc1c2;
let d4 = [0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8];
let u = Uuid::from_fields(d1, d2, d3, &d4).unwrap();
let expected = "a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8";
let result = u.to_simple().to_string();
assert_eq!(result, expected);
}
#[test]
fn test_from_fields_le() {
let d1: u32 = 0xa4a3a2a1;
let d2: u16 = 0xb2b1;
let d3: u16 = 0xc2c1;
let d4 = [0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8];
let u = Uuid::from_fields_le(d1, d2, d3, &d4).unwrap();
let expected = "a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8";
let result = u.to_simple().to_string();
assert_eq!(result, expected);
}
#[test]
fn test_as_fields() {
let u = test_util::new();
let (d1, d2, d3, d4) = u.as_fields();
assert_ne!(d1, 0);
assert_ne!(d2, 0);
assert_ne!(d3, 0);
assert_eq!(d4.len(), 8);
assert!(!d4.iter().all(|&b| b == 0));
}
#[test]
fn test_fields_roundtrip() {
let d1_in: u32 = 0xa1a2a3a4;
let d2_in: u16 = 0xb1b2;
let d3_in: u16 = 0xc1c2;
let d4_in = &[0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8];
let u = Uuid::from_fields(d1_in, d2_in, d3_in, d4_in).unwrap();
let (d1_out, d2_out, d3_out, d4_out) = u.as_fields();
assert_eq!(d1_in, d1_out);
assert_eq!(d2_in, d2_out);
assert_eq!(d3_in, d3_out);
assert_eq!(d4_in, d4_out);
}
#[test]
fn test_fields_le_roundtrip() {
let d1_in: u32 = 0xa4a3a2a1;
let d2_in: u16 = 0xb2b1;
let d3_in: u16 = 0xc2c1;
let d4_in = &[0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8];
let u = Uuid::from_fields_le(d1_in, d2_in, d3_in, d4_in).unwrap();
let (d1_out, d2_out, d3_out, d4_out) = u.to_fields_le();
assert_eq!(d1_in, d1_out);
assert_eq!(d2_in, d2_out);
assert_eq!(d3_in, d3_out);
assert_eq!(d4_in, d4_out);
}
#[test]
fn test_fields_le_are_actually_le() {
let d1_in: u32 = 0xa1a2a3a4;
let d2_in: u16 = 0xb1b2;
let d3_in: u16 = 0xc1c2;
let d4_in = &[0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8];
let u = Uuid::from_fields(d1_in, d2_in, d3_in, d4_in).unwrap();
let (d1_out, d2_out, d3_out, d4_out) = u.to_fields_le();
assert_eq!(d1_in, d1_out.swap_bytes());
assert_eq!(d2_in, d2_out.swap_bytes());
assert_eq!(d3_in, d3_out.swap_bytes());
assert_eq!(d4_in, d4_out);
}
#[test]
fn test_from_u128() {
let v_in: u128 = 0xa1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8;
let u = Uuid::from_u128(v_in);
let expected = "a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8";
let result = u.to_simple().to_string();
assert_eq!(result, expected);
}
#[test]
fn test_from_u128_le() {
let v_in: u128 = 0xd8d7d6d5d4d3d2d1c2c1b2b1a4a3a2a1;
let u = Uuid::from_u128_le(v_in);
let expected = "a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8";
let result = u.to_simple().to_string();
assert_eq!(result, expected);
}
#[test]
fn test_u128_roundtrip() {
let v_in: u128 = 0xa1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8;
let u = Uuid::from_u128(v_in);
let v_out = u.as_u128();
assert_eq!(v_in, v_out);
}
#[test]
fn test_u128_le_roundtrip() {
let v_in: u128 = 0xd8d7d6d5d4d3d2d1c2c1b2b1a4a3a2a1;
let u = Uuid::from_u128_le(v_in);
let v_out = u.to_u128_le();
assert_eq!(v_in, v_out);
}
#[test]
fn test_u128_le_is_actually_le() {
let v_in: u128 = 0xa1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8;
let u = Uuid::from_u128(v_in);
let v_out = u.to_u128_le();
assert_eq!(v_in, v_out.swap_bytes());
}
#[test]
fn test_from_slice() {
let b = [
0xa1, 0xa2, 0xa3, 0xa4, 0xb1, 0xb2, 0xc1, 0xc2, 0xd1, 0xd2, 0xd3,
0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
];
let u = Uuid::from_slice(&b).unwrap();
let expected = "a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8";
assert_eq!(u.to_simple().to_string(), expected);
}
#[test]
fn test_from_bytes() {
let b = [
0xa1, 0xa2, 0xa3, 0xa4, 0xb1, 0xb2, 0xc1, 0xc2, 0xd1, 0xd2, 0xd3,
0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
];
let u = Uuid::from_bytes(b);
let expected = "a1a2a3a4b1b2c1c2d1d2d3d4d5d6d7d8";
assert_eq!(u.to_simple().to_string(), expected);
}
#[test]
fn test_as_bytes() {
let u = test_util::new();
let ub = u.as_bytes();
assert_eq!(ub.len(), 16);
assert!(!ub.iter().all(|&b| b == 0));
}
#[test]
fn test_bytes_roundtrip() {
let b_in: crate::Bytes = [
0xa1, 0xa2, 0xa3, 0xa4, 0xb1, 0xb2, 0xc1, 0xc2, 0xd1, 0xd2, 0xd3,
0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
];
let u = Uuid::from_slice(&b_in).unwrap();
let b_out = u.as_bytes();
assert_eq!(&b_in, b_out);
}
#[test]
fn test_iterbytes_impl_for_uuid() {
let mut set = std::collections::HashSet::new();
let id1 = test_util::new();
let id2 = test_util::new2();
set.insert(id1.clone());
assert!(set.contains(&id1));
assert!(!set.contains(&id2));
}
}