Merge branch 'master' of github.com:ethcore/parity into ark

util/src/lib.rs

@@ -43,8 +43,6 @@ extern crate tiny_keccak;
 #[macro_use]
 extern crate heapsize;
 #[macro_use]
-extern crate log;
-#[macro_use]
 extern crate lazy_static;
 #[macro_use]
 extern crate itertools;
@@ -56,6 +54,8 @@ extern crate arrayvec;
 extern crate elastic_array;
 extern crate crossbeam;
 extern crate serde;
+#[macro_use]
+extern crate log as rlog;
 
 /// TODO [Gav Wood] Please document me
 pub mod standard;
@@ -98,6 +98,7 @@ pub mod semantic_version;
 pub mod io;
 /// TODO [Gav Wood] Please document me
 pub mod network;
+pub mod log;
 
 pub use common::*;
 pub use misc::*;
@@ -118,3 +119,4 @@ pub use squeeze::*;
 pub use semantic_version::*;
 pub use network::*;
 pub use io::*;
+pub use log::*;

util/src/log.rs

@@ -0,0 +1,26 @@
+//! Common log helper functions
+
+use std::env;
+use rlog::{LogLevelFilter};
+use env_logger::LogBuilder;
+
+lazy_static! {
+	static ref LOG_DUMMY: bool = {
+		let mut builder = LogBuilder::new();
+		builder.filter(None, LogLevelFilter::Info);
+
+		if let Ok(log) = env::var("RUST_LOG") {
+			builder.parse(&log);
+		}
+
+		if let Ok(_) = builder.init() {
+			println!("logger initialized");
+		}
+		true
+	};
+}
+
+/// Intialize log with default settings
+pub fn init_log() {
+	let _ = *LOG_DUMMY;
+}