[Rust] 第一次学 Rust 写了个解压小工具 还挺爽

需求：递归 原地 解压所有压缩文件

以前这种东西都用 python/shell 写

现在正在试着全面转向 rust 的技术栈 反正 rustup 安装也挺方便的（但比 go 还是麻烦了点

(好像设置 rust 和 rs 都没有代码高亮 凑活着看

use std::env;
use std::fs;
use std::io;
use std::path::{Path, PathBuf};
use std::process::Command;

fn unar_file(path: &Path) -> io::Result<()> {
    println!("UNAR: {}", path.display());
    let parent_dir = path.parent().unwrap();
    let filename = path.file_name().unwrap();
    let output = Command::new("unar")
        .current_dir(parent_dir)
        .arg("-s")
        .arg("-d")
        .arg(filename)
        .output();

    match output {
        Ok(res) => {
            if !res.status.success() {
                eprintln!("Error processing compressed file {:?}: {}", path, String::from_utf8_lossy(&res.stderr));
                return Err(io::ErrorKind::Other.into());
            }
        }
        Err(e) => {
            eprintln!("Failed to execute unar for {:?}: {}", path, e);
        }
    }

    Ok(())
}

fn is_compressed(path: &Path) -> bool {
    if let Some(ext) = path.extension() {
        if let Some(ext) = ext.to_str() {
            let ext = ext.to_lowercase();
            return ext == "zip" || ext == "rar" || ext == "7z";
        }
    }

    false
}

fn process_compressed_files(path: &Path) -> io::Result<()> {
    if !path.is_dir() {
        return Err(io::Error::new(io::ErrorKind::Other, "Not a directory"));
    }

    println!("Processing directory: {}", path.display());
    for entry in fs::read_dir(path)? {
        let entry_path = entry?.path();
        if entry_path.is_dir() {
            process_compressed_files(&entry_path)?;
        } else if is_compressed(entry_path.as_path()) {
            unar_file(&entry_path).expect("UNAR Error.");
        }
    }

    Ok(())
}

fn main() -> io::Result<()> {
    let args: Vec<String> = env::args().collect();

    let start_path = if args.len() > 1 {
        PathBuf::from(args[1].as_str())
    } else {
        PathBuf::from(".")
    };

    if start_path.is_file() {
        return unar_file(&start_path);
    }

    process_compressed_files(&start_path)?;

    Ok(())
}

不知道粗制滥造的代码有没有什么问题 Rust 大佬请指正～