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use anyhow::{Context, Error, Result};
use crossterm::event::EventStream;
use helix_loader::VERSION_AND_GIT_HASH;
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();
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(())
}
fn main() -> Result<()> {
let exit_code = main_impl()?;
std::process::exit(exit_code);
}
#[tokio::main]
async fn main_impl() -> Result<i32> {
let logpath = helix_loader::log_file();
let parent = logpath.parent().unwrap();
if !parent.exists() {
std::fs::create_dir_all(parent).ok();
}
let help = format!(
"\
{} {}
{}
{}
USAGE:
hx [FLAGS] [files]...
ARGS:
<files>... Sets the input file to use, position can also be specified via file[:row[:col]]
FLAGS:
-h, --help Prints help information
--tutor Loads the tutorial
--health [CATEGORY] Checks for potential errors in editor setup
CATEGORY can be a language or one of 'clipboard', 'languages'
or 'all'. 'all' is the default if not specified.
-g, --grammar {{fetch|build}} Fetches or builds tree-sitter grammars listed in languages.toml
-c, --config <file> Specifies a file to use for configuration
-v Increases logging verbosity each use for up to 3 times
--log Specifies a file to use for logging
(default file: {})
-V, --version Prints version information
--vsplit Splits all given files vertically into different windows
--hsplit Splits all given files horizontally into different windows
",
env!("CARGO_PKG_NAME"),
VERSION_AND_GIT_HASH,
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 {}", VERSION_AND_GIT_HASH);
std::process::exit(0);
}
if args.health {
if let Err(err) = helix_term::health::print_health(args.health_arg) {
// Piping to for example `head -10` requires special handling:
// https://stackoverflow.com/a/65760807/7115678
if err.kind() != std::io::ErrorKind::BrokenPipe {
return Err(err.into());
}
}
std::process::exit(0);
}
if args.fetch_grammars {
helix_loader::grammar::fetch_grammars()?;
return Ok(0);
}
if args.build_grammars {
helix_loader::grammar::build_grammars(None)?;
return Ok(0);
}
let logpath = args.log_file.as_ref().cloned().unwrap_or(logpath);
setup_logging(logpath, args.verbosity).context("failed to initialize logging")?;
let config_dir = helix_loader::config_dir();
if !config_dir.exists() {
std::fs::create_dir_all(&config_dir).ok();
}
helix_loader::initialize_config_file(args.config_file.clone());
let config = match std::fs::read_to_string(helix_loader::config_file()) {
Ok(config) => toml::from_str(&config)
.map(helix_term::keymap::merge_keys)
.unwrap_or_else(|err| {
eprintln!("Bad config: {}", err);
eprintln!("Press <ENTER> to continue with default config");
use std::io::Read;
let _ = std::io::stdin().read(&mut []);
Config::default()
}),
Err(err) if err.kind() == std::io::ErrorKind::NotFound => Config::default(),
Err(err) => return Err(Error::new(err)),
};
let syn_loader_conf = helix_core::config::user_syntax_loader().unwrap_or_else(|err| {
eprintln!("Bad language config: {}", err);
eprintln!("Press <ENTER> to continue with default language config");
use std::io::Read;
// This waits for an enter press.
let _ = std::io::stdin().read(&mut []);
helix_core::config::default_syntax_loader()
});
// TODO: use the thread local executor to spawn the application task separately from the work pool
let mut app = Application::new(args, config, syn_loader_conf)
.context("unable to create new application")?;
let exit_code = app.run(&mut EventStream::new()).await?;
Ok(exit_code)
}
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