lz4/
liblz4.rs

1use std::ffi::CStr;
2use std::fmt::Display;
3use std::fmt::Formatter;
4use std::io::Error;
5use std::io::ErrorKind;
6use std::str;
7
8pub use lz4_sys::*;
9
10#[derive(Debug)]
11pub struct LZ4Error(String);
12
13impl Display for LZ4Error {
14    fn fmt(&self, f: &mut Formatter) -> Result<(), ::std::fmt::Error> {
15        write!(f, "LZ4 error: {}", &self.0)
16    }
17}
18
19impl ::std::error::Error for LZ4Error {
20    fn description(&self) -> &str {
21        &self.0
22    }
23
24    fn cause(&self) -> Option<&dyn (::std::error::Error)> {
25        None
26    }
27}
28
29pub fn check_error(code: LZ4FErrorCode) -> Result<usize, Error> {
30    unsafe {
31        if LZ4F_isError(code) != 0 {
32            let error_name = LZ4F_getErrorName(code);
33            return Err(Error::new(
34                ErrorKind::Other,
35                LZ4Error(
36                    str::from_utf8(CStr::from_ptr(error_name).to_bytes())
37                        .unwrap()
38                        .to_string(),
39                ),
40            ));
41        }
42    }
43    Ok(code as usize)
44}
45
46pub fn version() -> i32 {
47    unsafe { LZ4_versionNumber() }
48}
49
50#[test]
51fn test_version_number() {
52    version();
53}
lz4/liblz4.rs

lz4/
liblz4.rs
