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mod lock_guard;
mod lock_path;
#[cfg(test)]
mod tests;
pub use crate::lock_guard::LockGuard;
pub use crate::lock_path::LockPath;
use fs2::FileExt;
use std::fs::{File, OpenOptions};
use std::path::{Path, PathBuf};
pub type Result<T> = std::io::Result<T>;
pub fn lock<P: AsRef<Path>>(file_path: &LockPath<P>) -> Result<LockGuard> {
let lock_file = open_file_for_locking(file_path.to_path_buf())?;
lock_file.lock_exclusive()?;
Ok(lock_file.into())
}
pub fn try_lock<P: AsRef<Path>>(file_path: &LockPath<P>) -> Result<LockGuard> {
let lock_file = open_file_for_locking(file_path.to_path_buf())?;
lock_file.try_lock_exclusive()?;
Ok(lock_file.into())
}
fn open_file_for_locking(file_path: PathBuf) -> Result<File> {
let lock_file: File = OpenOptions::new()
.write(true)
.create(true)
.open(file_path)?;
Ok(lock_file)
}