#[cfg(any(target_os = "linux", target_os = "android", target_vendor = "apple"))]
use std::{ffi::OsStr, os::unix::ffi::OsStrExt, path::Path};
use crate::Pid;
#[allow(clippy::useless_conversion)]
#[cfg(any(target_os = "linux", target_os = "android"))]
pub fn realpath(original: &Path) -> std::path::PathBuf {
use libc::{c_char, 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 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();
let res = unsafe { lstat(result_s.as_ptr() as *const c_char, buf.as_mut_ptr()) };
let buf = unsafe { buf.assume_init() };
if res < 0 || 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(),
}
}
}
#[cfg(any(target_os = "linux", target_os = "android", target_vendor = "apple"))]
pub fn to_cpath(path: &Path) -> Vec<u8> {
let path_os: &OsStr = path.as_ref();
let mut cpath = path_os.as_bytes().to_vec();
cpath.push(0);
cpath
}
#[allow(clippy::unnecessary_wraps)]
pub fn get_current_pid() -> Result<Pid, &'static str> {
cfg_if::cfg_if! {
if #[cfg(not(any(target_os = "windows", target_os = "unknown", target_arch = "wasm32")))] {
fn inner() -> Result<Pid, &'static str> {
unsafe { Ok(::libc::getpid()) }
}
} else if #[cfg(target_os = "windows")] {
fn inner() -> Result<Pid, &'static str> {
use winapi::um::processthreadsapi::GetCurrentProcessId;
unsafe { Ok(GetCurrentProcessId() as Pid) }
}
} else if #[cfg(target_os = "unknown")] {
fn inner() -> Result<Pid, &'static str> {
Err("Unavailable on this platform")
}
} else {
fn inner() -> Result<Pid, &'static str> {
Err("Unknown platform")
}
}
}
inner()
}
#[cfg(all(
all(
any(
target_os = "linux",
target_os = "android",
target_vendor = "apple",
target_os = "windows"
),
feature = "multithread"
),
not(feature = "apple-app-store")
))]
pub fn into_iter<T>(val: T) -> T::Iter
where
T: rayon::iter::IntoParallelIterator,
{
val.into_par_iter()
}
#[cfg(all(
all(
any(
target_os = "linux",
target_os = "android",
target_vendor = "apple",
target_os = "windows"
),
not(feature = "multithread")
),
not(feature = "apple-app-store")
))]
pub fn into_iter<T>(val: T) -> T::IntoIter
where
T: IntoIterator,
{
val.into_iter()
}