conduit/src/utils.rs

35 lines
849 B
Rust
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use std::{
convert::TryInto,
time::{SystemTime, UNIX_EPOCH},
};
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pub fn millis_since_unix_epoch() -> js_int::UInt {
(SystemTime::now()
.duration_since(UNIX_EPOCH)
.unwrap()
.as_millis() as u32)
.into()
}
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pub fn increment(old: Option<&[u8]>) -> Option<Vec<u8>> {
let number = match old {
Some(bytes) => {
let array: [u8; 8] = bytes.try_into().unwrap();
let number = u64::from_be_bytes(array);
number + 1
}
None => 0,
};
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Some(number.to_be_bytes().to_vec())
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}
pub fn u64_from_bytes(bytes: &[u8]) -> u64 {
let array: [u8; 8] = bytes.try_into().expect("bytes are valid u64");
u64::from_be_bytes(array)
}
pub fn string_from_bytes(bytes: &[u8]) -> String {
String::from_utf8(bytes.to_vec()).expect("bytes are valid utf8")
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}