codestats 0.6.0

#![warn(clippy::all, clippy::cargo, clippy::nursery, clippy::pedantic, clippy::perf, unused_crate_dependencies)]
#![deny(warnings)]

mod analysis;
mod cli;
mod completions;
mod config;
mod display;
mod langs;

use std::io::{self, Write as _};

use anyhow::{Result, anyhow, ensure};
use cli::{Cli, Commands};
use terminal_size::terminal_size;

use crate::{
	analysis::CodeAnalyzer,
	config::{AnalyzerConfig, Config},
	display::{ViewOptions, get_formatter},
};

fn main() -> Result<()> {
	let (cli, matches) = Cli::parse_with_matches();
	if let Some(command) = cli.command {
		match command {
			Commands::Completions { shell } => {
				shell.generate_completions()?;
				return Ok(());
			}
			Commands::Langs => {
				let mut stdout = io::stdout();
				let terminal_width = terminal_size().map_or(80, |(w, _)| usize::from(w.0));
				langs::print_all_languages(&mut stdout, terminal_width)?;
				stdout.flush()?;
				return Ok(());
			}
		}
	}
	let analyze = &cli.analyze;
	let config = if let Some(ref config_path) = analyze.config {
		Config::from_file(config_path)?
	} else {
		Config::load_default()?
	};
	let config = config.merge_with_cli(analyze, &matches)?;
	ensure!(config.path.exists(), "Path `{}` not found", config.path.display());
	if config.path.is_file() {
		ensure!(config.path.metadata().is_ok(), "Cannot read file metadata for `{}`", config.path.display());
	}
	let analyzer_config: AnalyzerConfig = (&config).into();
	let verbose = config.analysis.verbose;
	let analyzer = CodeAnalyzer::new(&config.path, analyzer_config);
	let results = analyzer.analyze()?;
	let view_options: ViewOptions = (&config).into();
	let formatter = get_formatter(config.display.output);
	let mut stdout = io::stdout();
	formatter.write_output(&results, &config.path, verbose, view_options, &mut stdout)?;
	stdout.flush()?;
	if config.analysis.fail_on_error && results.skipped_entries() > 0 {
		return Err(anyhow!("Skipped {} entries due to errors", results.skipped_entries()));
	}
	Ok(())
}