to executable

build/src/main.rs

@@ -1,10 +1,14 @@
-//! Tools library for building contracts via cargo
+//! Experimental build tool for cargo
 
 extern crate glob;
+extern crate wasm_utils;
+extern crate clap;
 
 use std::{env, fs, io};
 use std::path::PathBuf;
 
+use clap::{App, Arg};
+
 #[derive(Debug)]
 pub enum Error {
 	Io(io::Error),
@@ -20,10 +24,14 @@ impl From<io::Error> for Error {
 }
 
 pub fn process_output(bin_name: &str) -> Result<(), Error> {
-	let out_dir = env::var("OUT").map_err(|_| Error::NoEnvVar)?;
+	let out_dir = env::var("OUT_DIR").map_err(|_| Error::NoEnvVar)?;
 	let mut path = PathBuf::from(out_dir.clone());
+	let wasm_name = bin_name.to_string().replace("-", "_");
+	path.push("..");
+	path.push("..");
+	path.push("..");
 	path.push("deps");
-	path.push(format!("{}-*.wasm", bin_name));
+	path.push(format!("{}-*.wasm", wasm_name));
 
 	let mut files = glob::glob(path.to_string_lossy().as_ref()).expect("glob err")
 		.collect::<Vec<Result<PathBuf, glob::GlobError>>>();
@@ -37,8 +45,34 @@ pub fn process_output(bin_name: &str) -> Result<(), Error> {
 		))
 	} else {
 		let file = files.drain(..).nth(0).expect("0th element exists").expect("glob err");
-		fs::copy(file, out_dir)?;
+		let mut path = PathBuf::from(out_dir.clone());
+		path.push(format!("{}.wasm", bin_name));
+		fs::copy(file, path)?;
 	}
 
 	Ok(())
+}
+
+fn main() {
+	wasm_utils::init_log();
+
+	let matches = App::new("wasm-opt")
+		.arg(Arg::with_name("input")
+			.index(1)
+			.required(true)
+			.help("Input WASM file"))
+		.arg(Arg::with_name("output")
+			.index(2)
+			.required(true)
+			.help("Output WASM file"))
+		.arg(Arg::with_name("exports")
+			.long("exports")
+			.short("e")
+			.takes_value(true)
+			.value_name("functions")
+			.help("Comma-separated list of exported functions to keep. Default: _call"))
+		.get_matches();
+
+
+
 }