squigit-storage 0.1.0

Persistent profiles, threads, and content-addressed storage for Squigit
Documentation 
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// Copyright 2026 a7mddra
// SPDX-License-Identifier: Apache-2.0

use std::fs;
use std::io;
use std::path::Path;

#[cfg(target_os = "windows")]
pub(crate) fn replace_file(source: &Path, destination: &Path) -> io::Result<()> {
    use std::iter;
    use std::os::windows::ffi::OsStrExt;
    use windows_sys::Win32::Storage::FileSystem::{
        MoveFileExW, MOVEFILE_REPLACE_EXISTING, MOVEFILE_WRITE_THROUGH,
    };

    let source = source
        .as_os_str()
        .encode_wide()
        .chain(iter::once(0))
        .collect::<Vec<_>>();
    let destination = destination
        .as_os_str()
        .encode_wide()
        .chain(iter::once(0))
        .collect::<Vec<_>>();
    let result = unsafe {
        MoveFileExW(
            source.as_ptr(),
            destination.as_ptr(),
            MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH,
        )
    };
    if result == 0 {
        Err(io::Error::last_os_error())
    } else {
        Ok(())
    }
}

#[cfg(not(target_os = "windows"))]
pub(crate) fn replace_file(source: &Path, destination: &Path) -> io::Result<()> {
    fs::rename(source, destination)
}

#[cfg(unix)]
pub(crate) fn sync_parent(parent: &Path) -> io::Result<()> {
    fs::File::open(parent)?.sync_all()
}

#[cfg(not(unix))]
pub(crate) fn sync_parent(_parent: &Path) -> io::Result<()> {
    Ok(())
}