1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
use std::io::{self, Cursor, Write};
use uuid::Uuid;
use crate::{AzBuf, BufReadError};
pub trait SerializableUuid {
fn to_int_array(&self) -> [u32; 4];
fn from_int_array(array: [u32; 4]) -> Self;
}
fn least_most_to_int_array(most: u64, least: u64) -> [u32; 4] {
[
(most >> 32) as u32,
most as u32,
(least >> 32) as u32,
least as u32,
]
}
impl SerializableUuid for Uuid {
fn to_int_array(&self) -> [u32; 4] {
let most_significant_bits = (self.as_u128() >> 64) as u64;
let least_significant_bits = (self.as_u128() & 0xffffffffffffffff) as u64;
least_most_to_int_array(most_significant_bits, least_significant_bits)
}
fn from_int_array(array: [u32; 4]) -> Self {
let most = ((array[0] as u64) << 32) | ((array[1] as u64) & 0xFFFFFFFF);
let least = ((array[2] as u64) << 32) | ((array[3] as u64) & 0xFFFFFFFF);
Uuid::from_u128(((most as u128) << 64) | least as u128)
}
}
impl AzBuf for Uuid {
fn azalea_read(buf: &mut Cursor<&[u8]>) -> Result<Self, BufReadError> {
Ok(Uuid::from_int_array([
u32::azalea_read(buf)?,
u32::azalea_read(buf)?,
u32::azalea_read(buf)?,
u32::azalea_read(buf)?,
]))
}
fn azalea_write(&self, buf: &mut impl Write) -> io::Result<()> {
let [a, b, c, d] = self.to_int_array();
a.azalea_write(buf)?;
b.azalea_write(buf)?;
c.azalea_write(buf)?;
d.azalea_write(buf)?;
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn to_int_array() {
let u = Uuid::parse_str("6536bfed-8695-48fd-83a1-ecd24cf2a0fd").unwrap();
assert_eq!(
u.to_int_array(),
[0x6536bfed, 0x869548fd, 0x83a1ecd2, 0x4cf2a0fd]
);
}
#[test]
fn from_int_array() {
let u = Uuid::from_int_array([0x6536bfed, 0x869548fd, 0x83a1ecd2, 0x4cf2a0fd]);
assert_eq!(u.to_string(), "6536bfed-8695-48fd-83a1-ecd24cf2a0fd");
}
#[test]
fn read_write() {
let u = Uuid::parse_str("6536bfed-8695-48fd-83a1-ecd24cf2a0fd").unwrap();
let mut buf = Vec::new();
u.azalea_write(&mut buf).unwrap();
println!("{buf:?}");
assert_eq!(buf.len(), 16);
let u2 = Uuid::azalea_read(&mut Cursor::new(&buf)).unwrap();
assert_eq!(u, u2);
}
}
|
