use std::{fs::OpenOptions, io, path::PathBuf}; use anyhow::Result; use clap::{ArgAction, Parser}; use log::LevelFilter; use lsp_server::Connection; use texlab::Server; /// An implementation of the Language Server Protocol for LaTeX #[derive(Debug, Parser)] #[clap(version)] struct Opts { /// Increase message verbosity (-vvvv for max verbosity) #[clap(short, long, action = ArgAction::Count)] verbosity: u8, /// No output printed to stderr #[clap(short, long)] quiet: bool, /// Write the logging output to FILE #[clap(long, name = "FILE", value_parser)] log_file: Option, } fn main() -> Result<()> { let opts = Opts::parse(); setup_logger(opts); let (connection, threads) = Connection::stdio(); Server::new(connection).run()?; threads.join()?; Ok(()) } fn setup_logger(opts: Opts) { let verbosity_level = if !opts.quiet { match opts.verbosity { 0 => LevelFilter::Error, 1 => LevelFilter::Warn, 2 => LevelFilter::Info, 3 => LevelFilter::Debug, _ => LevelFilter::Trace, } } else { LevelFilter::Off }; let logger = fern::Dispatch::new() .format(|out, message, record| out.finish(format_args!("{} - {}", record.level(), message))) .level(verbosity_level) .filter(|metadata| { metadata.target().contains("texlab") || metadata.target().contains("lsp_server") }) .chain(io::stderr()); let logger = match opts.log_file { Some(log_file) => logger.chain( OpenOptions::new() .write(true) .create(true) .open(log_file) .expect("failed to open log file"), ), None => logger, }; logger.apply().expect("failed to initialize logger"); }