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// Take a look at the license at the top of the repository in the LICENSE file.
use std::fs::File;
use std::io::{self, Read, Seek, SeekFrom};
use std::path::Path;
pub(crate) fn get_all_data_from_file(file: &mut File, size: usize) -> io::Result<String> {
let mut buf = String::with_capacity(size);
file.seek(SeekFrom::Start(0))?;
file.read_to_string(&mut buf)?;
Ok(buf)
}
pub(crate) fn get_all_data<P: AsRef<Path>>(file_path: P, size: usize) -> io::Result<String> {
let mut file = File::open(file_path.as_ref())?;
get_all_data_from_file(&mut file, size)
}
#[allow(clippy::useless_conversion)]
pub(crate) fn realpath(original: &Path) -> std::path::PathBuf {
use libc::{lstat, stat, S_IFLNK, S_IFMT};
use std::fs;
use std::mem::MaybeUninit;
use std::path::PathBuf;
fn and(x: u32, y: u32) -> u32 {
x & y
}
// let ori = Path::new(original.to_str().unwrap());
// Right now lstat on windows doesn't work quite well
// if cfg!(windows) {
// return PathBuf::from(ori);
// }
let result = PathBuf::from(original);
let mut result_s = result.to_str().unwrap_or("").as_bytes().to_vec();
result_s.push(0);
let mut buf = MaybeUninit::<stat>::uninit();
unsafe {
let res = lstat(result_s.as_ptr() as *const _, buf.as_mut_ptr());
if res < 0 {
PathBuf::new()
} else {
let buf = buf.assume_init();
if and(buf.st_mode.into(), S_IFMT.into()) != S_IFLNK.into() {
PathBuf::new()
} else {
match fs::read_link(&result) {
Ok(f) => f,
Err(_) => PathBuf::new(),
}
}
}
}
}
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