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extern crate lazy_static;
use clap::{App, AppSettings, Arg};
use env_logger;
use log::error;
use std::io::prelude::*;
mod backends;
mod conf;
mod serde_duration;
mod wait;
fn main() {
let matches = App::new("evr")
.version(env!("CARGO_PKG_VERSION"))
.author("syn")
.setting(AppSettings::ColoredHelp)
.setting(AppSettings::UnifiedHelpMessage)
.arg(
Arg::with_name("src")
.required(true)
.index(1)
.help("source file"),
)
.arg(
Arg::with_name("time")
.short("t")
.long("time")
.help("show wall time"),
)
.arg(
Arg::with_name("mem")
.short("m")
.long("mem")
.help("show mem usage (rss)"),
)
.get_matches();
env_logger::builder().format_timestamp(None).init();
let src_path: std::path::PathBuf = matches.value_of("src").expect("src is required").into();
let config = match conf::get_conf() {
Ok(c) => c,
Err(err) => {
error!("could not load config: {}", err);
std::process::exit(64); // EX_USAGE (BSD sysexits(3))
}
};
if src_path.exists() {
if let Some(backend) = config.get_backend(&src_path) {
match backend.run(&src_path) {
Ok(status) => {
// print to stderr to allow `>/dev/null` for user programs
if matches.is_present("time") {
eprintln!("wall time: {:?}", status.wall_time);
}
if matches.is_present("mem") {
eprintln!("rss: {}K", status.usage.get_rss_bytes() / 1000);
}
}
Err(err) => error!("{}", err),
};
} else {
error!("could not match backend");
}
} else {
let template = config.get_template(&src_path).as_bytes();
if let Err(err) =
std::fs::File::create(&src_path).and_then(|mut file| file.write_all(template))
{
error!("{}", err);
}
};
}
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