hapi_rs/
utils.rs

1#[allow(unused)]
2macro_rules! cstr {
3    ($($bytes:tt)*) => {
4        CStr::from_bytes_with_nul($($bytes)*).expect("CStr with null")
5    };
6}
7
8pub(crate) fn path_to_cstring(
9    path: impl AsRef<std::path::Path>,
10) -> crate::Result<std::ffi::CString> {
11    let s = path.as_ref().as_os_str().to_string_lossy().to_string();
12    Ok(std::ffi::CString::new(s)?)
13}
14
15/// Join a sequence of paths into a single String
16pub fn join_paths<I>(files: I) -> String
17where
18    I: IntoIterator,
19    I::Item: AsRef<str>,
20{
21    const SEP: char = if cfg!(windows) { ';' } else { ':' };
22    let mut buf = String::new();
23    let mut iter = files.into_iter().peekable();
24    while let Some(n) = iter.next() {
25        buf.push_str(n.as_ref());
26        if iter.peek().is_some() {
27            buf.push(SEP);
28        }
29    }
30    buf
31}
32
33/// Generates a random ascii a-z sequence of specified length
34pub fn random_string(len: usize) -> String {
35    use std::collections::hash_map::RandomState;
36    use std::hash::{BuildHasher, Hasher};
37
38    let mut seed = RandomState::new().build_hasher().finish();
39    let next = || {
40        seed = seed.wrapping_mul(1103515245).wrapping_add(12345);
41        ((seed % 26) + 97) as u8 as char
42    };
43    std::iter::repeat_with(next).take(len).collect()
44}
hapi_rs/utils.rs

hapi_rs/
utils.rs
