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add -v/--version and -h/--help args

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pythcoiner 2024-02-02 11:54:41 +01:00 committed by pythcoiner
parent a34070dce1
commit cd0e69ab23
1 changed files with 17 additions and 7 deletions
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24
src/bin/daemon.rs
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@ -5,13 +5,19 @@ use std::{
process, thread, time,
};
use liana::{config::Config, DaemonHandle};
use liana::{config::Config, DaemonHandle, VERSION};
fn print_help_exit() {
fn print_help_exit(code: i32) {
eprintln!("lianad version {}", VERSION);
eprintln!("A TOML configuration file is required to run lianad. By default lianad looks for a 'config.toml' file in its data directory. A different one may be provided like so: '--conf <config file path>'.");
eprintln!("A documented sample is available at 'contrib/lianad_config_example.toml' in the source tree (https://github.com/wizardsardine/liana/blob/v1.0/contrib/lianad_config_example.toml).");
eprintln!("The default data directory path is a 'liana/' folder in the XDG standard configuration directory for all OSes but Linux ones, where it's '~/.liana/'.");
process::exit(1);
process::exit(code);
}
fn print_version() {
eprintln!("{}", VERSION);
process::exit(0);
}
fn parse_args(args: Vec<String>) -> Option<PathBuf> {
@ -19,13 +25,17 @@ fn parse_args(args: Vec<String>) -> Option<PathBuf> {
return None;
}
if args[1] != "--conf" {
if args[1] == "--help" || args[1] == "-h" {
print_help_exit(0)
} else if args[1] == "--version" || args[1] == "-v" {
print_version()
} else if args[1] != "--conf" {
eprintln!("Only a single command line argument is supported: --conf. All other configuration parameters must be specified in the configuration file.");
print_help_exit();
print_help_exit(1);
}
if args.len() != 3 {
print_help_exit();
print_help_exit(1);
}
Some(PathBuf::from(args[2].to_owned()))
@ -62,7 +72,7 @@ fn main() {
let config = Config::from_file(conf_file).unwrap_or_else(|e| {
eprintln!("Error parsing config: {}", e);
print_help_exit();
print_help_exit(1);
unreachable!();
});
setup_logger(config.log_level).unwrap_or_else(|e| {