buildj 0.1.10

A java build tool
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use std::env;
use std::path::Path;
use std::process::Command;
use std::fs::{self, File};
use std::io::{Read, ErrorKind};
use rust_util::XResult;
use rust_util::util_io::{self, DEFAULT_BUF_SIZE, PrintStatusContext};
use crypto::{digest::Digest, md5::Md5, sha1::Sha1, sha2::{Sha256, Sha512}};

pub fn get_args_as_vec() -> Vec<String> {
    env::args().collect::<Vec<String>>()
}

pub fn is_buildin_args(args: &[String]) -> bool {
    args.get(1)
        .map(|arg| arg.starts_with(":::") || arg.starts_with("..."))
        .unwrap_or(false)
}

pub fn verify_file_integrity(integrity: &str, file_name: &str) -> XResult<bool> {
    match integrity.find('-') {
        None => simple_error!("Not supported integrigty: {}", integrity),
        Some(index) => {
            let digest_hex = &integrity[index+1..];
            let calc_digest_hex = match &integrity[0..index] {
                "sha256:hex" => calc_file_digest(&mut Sha256::new(), "SHA256", file_name)?,
                "sha512:hex" => calc_file_digest(&mut Sha512::new(), "SHA512", file_name)?,
                "sha1:hex" => calc_file_digest(&mut Sha1::new(), "SHA1", file_name)?,
                "md5:hex" => calc_file_digest(&mut Md5::new(), "MD5", file_name)?,
                _ => return simple_error!("Not supported integrigty: {}", integrity),
            };
            let integrity_verify_result = digest_hex == calc_digest_hex.as_str();
            if ! integrity_verify_result {
                failure!("Verify integrity failed, expected: {}, actual: {}", digest_hex, calc_digest_hex);
            }
            Ok(integrity_verify_result)
        },
    }
}

pub fn calc_sha256(d: &[u8]) -> String {
    let mut sha256 = Sha256::new();
    sha256.input(d);
    sha256.result_str()
}

pub fn calc_file_digest(digest: &mut dyn Digest, digest_alg: &str, file_name: &str) -> XResult<String> {
    let mut buf = [0u8; DEFAULT_BUF_SIZE];
    let mut f = File::open(file_name)?;
    let file_len = f.metadata().map(|md| md.len() as i64).unwrap_or(-1_i64);
    let mut print_status_context = PrintStatusContext::default();
    let mut written = 0_i64;
    loop {
        let len = match f.read(&mut buf) {
            Ok(0) => { println!(); return Ok(digest.result_str()); },
            Ok(len) => len,
            Err(ref e) if e.kind() == ErrorKind::Interrupted => continue,
            Err(e) => return Err(Box::new(e)),
        };
        digest.input(&buf[..len]);
        written += len as i64;
        util_io::print_status_last_line(&format!("Calc {}", digest_alg), file_len, written, &mut print_status_context);
    }
}

pub fn get_user_home() -> XResult<String> {
    match dirs::home_dir() {
        Some(home_dir_o) => match home_dir_o.to_str() {
            Some(home_dir_str) => Ok(home_dir_str.to_string()),
            None => simple_error!("Home dir not found!"),
        },
        None => simple_error!("Home dir not found!"),
    }
}

pub fn get_user_home_dir(dir: &str) -> XResult<String> {
    Ok(format!("{}/{}", get_user_home()?, dir))
}

pub fn is_path_exists(dir: &str, sub_dir: &str) -> bool {
    let full_path = &format!("{}/{}", dir, sub_dir);
    Path::new(full_path).exists()
}

pub fn run_command_and_wait(cmd: &mut Command) -> XResult<()> {
    cmd.spawn()?.wait()?;
    Ok(())
}

pub fn extract_package_and_wait(dir: &str, file_name: &str) -> XResult<()> {
    let mut cmd: Command;
    if file_name.ends_with(".zip") {
        cmd = Command::new("unzip");
    } else if file_name.ends_with(".tar.gz") {
        cmd = Command::new("tar");
        cmd.arg("-xzvf");
    } else {
        return simple_error!("Unknown file type: {}", file_name);
    }
    cmd.arg(file_name).current_dir(dir).spawn()?.wait()?;
    Ok(())
}

pub fn init_home_dir(home_sub_dir: &str) {
    if let Ok(user_home_dir) = get_user_home_dir(home_sub_dir) {
        init_dir(&user_home_dir);
    }
}

pub fn init_dir(dir: &str) {
    if ! Path::new(dir).exists() {
        fs::create_dir_all(dir).unwrap_or_else(|err| {
            failure!("Init dir {} failed: {}", dir, err);
        });
    }
}