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Unlucky Launcher v0.0.1-alpha
Rust 原生单文件 Minecraft 启动器:CLI 完整可用(install/launch/accounts/java/diagnose/agent),
MCP server 接入外部 Agent 工具,GUI 开发中。
2026-10-31 21:54:10 +08:00

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//! 测试公用小工具(临时目录 + 文件读写)。
//!
//! 不引 `tempfile`:M11 的依赖面只有 serde/serde_json,测试自己管临时目录。
#![allow(dead_code)]
use std::path::{Path, PathBuf};
use std::sync::atomic::{AtomicU64, Ordering};
static COUNTER: AtomicU64 = AtomicU64::new(0);
/// 进程内唯一的临时目录,`Drop` 时递归删除。
pub struct TempDir {
path: PathBuf,
}
impl TempDir {
/// 建一个临时目录。
pub fn new(label: &str) -> Self {
let index = COUNTER.fetch_add(1, Ordering::Relaxed);
let path = std::env::temp_dir().join(format!(
"ull-setting-{label}-{}-{index}",
std::process::id()
));
std::fs::remove_dir_all(&path).ok();
std::fs::create_dir_all(&path).expect("创建临时目录");
Self { path }
}
/// 根路径。
pub fn path(&self) -> &Path {
&self.path
}
/// 拼接子路径(不创建)。
pub fn child(&self, name: &str) -> PathBuf {
self.path.join(name)
}
/// 写一个文件(自动建父目录)。
pub fn write(&self, name: &str, contents: &str) -> PathBuf {
let path = self.child(name);
if let Some(parent) = path.parent() {
std::fs::create_dir_all(parent).expect("创建父目录");
}
std::fs::write(&path, contents).expect("写文件");
path
}
/// 读一个文件。
pub fn read(&self, name: &str) -> String {
std::fs::read_to_string(self.child(name)).expect("读文件")
}
/// 子路径是否存在。
pub fn exists(&self, name: &str) -> bool {
self.child(name).exists()
}
}
impl Drop for TempDir {
fn drop(&mut self) {
std::fs::remove_dir_all(&self.path).ok();
}
}
/// 目录里的文件名(排序后返回,便于断言没留下临时文件)。
pub fn dir_entries(dir: &Path) -> Vec<String> {
let mut names: Vec<String> = std::fs::read_dir(dir)
.expect("读目录")
.map(|entry| {
entry
.expect("目录项")
.file_name()
.to_string_lossy()
.into_owned()
})
.collect();
names.sort();
names
}