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extern crate argparse;
extern crate openat;
use std::process::exit;
use std::path::PathBuf;
use argparse::{ArgumentParser, Parse};
use openat::Dir;
#[cfg(not(target_os="linux"))]
fn main() {
println!("Atomic exchange is not supported on this platform")
}
#[cfg(target_os="linux")]
fn main() {
let mut path1 = PathBuf::new();
let mut path2 = PathBuf::new();
{
let mut ap = ArgumentParser::new();
ap.refer(&mut path1)
.add_argument("path1", Parse, "First path of exchange operation")
.required();
ap.refer(&mut path2)
.add_argument("path2", Parse, "Second path of exchange operation")
.required();
ap.parse_args_or_exit();
}
if path1.parent() != path2.parent() {
println!("Paths must be in the same directory");
exit(1);
}
let parent = path1.parent().expect("path must have parent directory");
let dir = Dir::open(parent).expect("can open directory");
dir.local_exchange(
path1.file_name().expect("path1 must have filename"),
path2.file_name().expect("path2 must have filename"),
).expect("can rename");
}
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