Refactor executables to separate crates

logger/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "pwasm-utils-logger"
+version = "0.1.5"
+authors = ["Nikolay Volf <nikvolf@gmail.com>", "Sergey Pepyakin <s.pepyakin@gmail.com>"]
+license = "MIT/Apache-2.0"
+readme = "README.md"
+description = "Collection of command-line utilities and corresponding Rust api for producing pwasm-compatible executables"
+keywords = ["wasm", "webassembly", "pwasm"]
+
+[lib]
+name = "logger"
+
+[dependencies]
+log = "0.4"
+env_logger = "0.5"
+lazy_static = "1.0"

logger/src/lib.rs

@@ -0,0 +1,27 @@
+#[macro_use] extern crate log;
+#[macro_use] extern crate lazy_static;
+extern crate env_logger;
+
+use std::env;
+use log::LevelFilter;
+use env_logger::Builder;
+
+lazy_static! {
+	static ref LOG_DUMMY: bool = {
+		let mut builder = Builder::new();
+		builder.filter(None, LevelFilter::Info);
+
+		if let Ok(log) = env::var("RUST_LOG") {
+			builder.parse(&log);
+		}
+
+		builder.init();
+		trace!("logger initialized");
+		true
+	};
+}
+
+/// Intialize log with default settings
+pub fn init_log() {
+	let _ = *LOG_DUMMY;
+}