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use anyhow::{Context, Error, Result};
use helix_term::application::Application;
use helix_term::args::Args;
use helix_term::config::Config;
use std::path::PathBuf;
fn setup_logging(logpath: PathBuf, verbosity: u64) -> Result<()> {
let mut base_config = fern::Dispatch::new();
// Let's say we depend on something which whose "info" level messages are too
// verbose to include in end-user output. If we don't need them,
// let's not include them.
// .level_for("overly-verbose-target", log::LevelFilter::Warn)
base_config = match verbosity {
0 => base_config.level(log::LevelFilter::Warn),
1 => base_config.level(log::LevelFilter::Info),
2 => base_config.level(log::LevelFilter::Debug),
_3_or_more => base_config.level(log::LevelFilter::Trace),
};
// Separate file config so we can include year, month and day in file logs
let file_config = fern::Dispatch::new()
.format(|out, message, record| {
out.finish(format_args!(
"{} {} [{}] {}",
chrono::Local::now().format("%Y-%m-%dT%H:%M:%S%.3f"),
record.target(),
record.level(),
message
))
})
.chain(fern::log_file(logpath)?);
base_config.chain(file_config).apply()?;
Ok(())
}
#[tokio::main]
async fn main() -> Result<()> {
let cache_dir = helix_core::cache_dir();
if !cache_dir.exists() {
std::fs::create_dir_all(&cache_dir).ok();
}
let logpath = cache_dir.join("helix.log");
let help = format!(
"\
{} {}
{}
{}
USAGE:
hx [FLAGS] [files]...
ARGS:
<files>... Sets the input file to use
FLAGS:
-h, --help Prints help information
-v Increases logging verbosity each use for up to 3 times
(default file: {})
-V, --version Prints version information
",
env!("CARGO_PKG_NAME"),
env!("CARGO_PKG_VERSION"),
env!("CARGO_PKG_AUTHORS"),
env!("CARGO_PKG_DESCRIPTION"),
logpath.display(),
);
let args = Args::parse_args().context("could not parse arguments")?;
// Help has a higher priority and should be handled separately.
if args.display_help {
print!("{}", help);
std::process::exit(0);
}
if args.display_version {
println!("helix {}", env!("CARGO_PKG_VERSION"));
std::process::exit(0);
}
let conf_dir = helix_core::config_dir();
if !conf_dir.exists() {
std::fs::create_dir_all(&conf_dir).ok();
}
let config = match std::fs::read_to_string(conf_dir.join("config.toml")) {
Ok(config) => toml::from_str(&config)?,
Err(err) if err.kind() == std::io::ErrorKind::NotFound => Config::default(),
Err(err) => return Err(Error::new(err)),
};
setup_logging(logpath, args.verbosity).context("failed to initialize logging")?;
// TODO: use the thread local executor to spawn the application task separately from the work pool
let mut app = Application::new(args, config).context("unable to create new application")?;
app.run().await.unwrap();
Ok(())
}
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