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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<PathBuf>,
}
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");
}
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