lsp appid catagory hash calculation demo

cargo.toml

[package]
name = "wctest"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
wchar = "*"

main.rs

use wchar::{wch, wchar_t};

fn main() {
    const PATH: &[wchar_t] = wch!(":\\WINDOWS\\SYSTEM32\\SVCHOST.EXE");
    let mut sum: u32 = 0;
    for &w in PATH {
        sum = sum.wrapping_mul(0x25).wrapping_add(w as u32);
    }
    let mul = sum.wrapping_mul(0x12b9b0a5);
    let m = mul >> 0x1f;
    let h = mul ^ m - m;
    println!("hash: {:08X}", h % 0x3b9aca07);
}