diff --git a/parity/cli/usage.rs b/parity/cli/usage.rs index da406d36a..a38c28876 100644 --- a/parity/cli/usage.rs +++ b/parity/cli/usage.rs @@ -14,6 +14,13 @@ // You should have received a copy of the GNU General Public License // along with Parity. If not, see . +macro_rules! println_stderr( + ($($arg:tt)*) => { { + let r = writeln!(&mut ::std::io::stderr(), $($arg)*); + r.expect("failed printing to stderr"); + } } +); + macro_rules! otry { ($e: expr) => ( match $e { @@ -39,7 +46,7 @@ macro_rules! usage { ) => { use toml; use std::{fs, io, process}; - use std::io::Read; + use std::io::{Read, Write}; use util::version; use docopt::{Docopt, Error as DocoptError}; use helpers::replace_home; @@ -58,20 +65,20 @@ macro_rules! usage { match self { ArgsError::Docopt(e) => e.exit(), ArgsError::Parsing(errors) => { - println!("There is an error in config file."); + println_stderr!("There is an error in config file."); for e in &errors { - println!("{}", e); + println_stderr!("{}", e); } process::exit(2) }, ArgsError::Decode(e) => { - println!("You might have supplied invalid parameters in config file."); - println!("{}", e); + println_stderr!("You might have supplied invalid parameters in config file."); + println_stderr!("{}", e); process::exit(2) }, ArgsError::Config(path, e) => { - println!("There was an error reading your config file at: {}", path); - println!("{}", e); + println_stderr!("There was an error reading your config file at: {}", path); + println_stderr!("{}", e); process::exit(2) } } @@ -136,7 +143,7 @@ macro_rules! usage { let config = match (fs::File::open(&config_file), raw_args.flag_config.is_some()) { // Load config file (Ok(mut file), _) => { - println!("Loading config file from {}", &config_file); + println_stderr!("Loading config file from {}", &config_file); let mut config = String::new(); try!(file.read_to_string(&mut config).map_err(|e| ArgsError::Config(config_file, e))); try!(Self::parse_config(&config)) diff --git a/parity/main.rs b/parity/main.rs index e0d6dfe36..83598231a 100644 --- a/parity/main.rs +++ b/parity/main.rs @@ -207,10 +207,10 @@ fn main() { match start() { Ok(result) => { - println!("{}", result); + info!("{}", result); }, Err(err) => { - println!("{}", err); + info!("{}", err); process::exit(1); } }