From 367514ae0799cd0fd2e14865c3e2a3a539c0a8c5 Mon Sep 17 00:00:00 2001
From: NikVolf <nikvolf@gmail.com>
Date: Fri, 18 May 2018 16:37:49 +0400
Subject: [PATCH] actual implementation of packer

---
 cli/pack/main.rs | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/cli/pack/main.rs b/cli/pack/main.rs
index 8a55e80..efed359 100644
--- a/cli/pack/main.rs
+++ b/cli/pack/main.rs
@@ -1,3 +1,35 @@
+extern crate parity_wasm;
+extern crate pwasm_utils as utils;
+extern crate pwasm_utils_cli as logger;
+extern crate clap;
+
+use clap::{App, Arg};
+
 fn main() {
-    
-}
\ No newline at end of file
+    logger::init_log();
+
+    let matches = App::new("wasm-pack")
+                        .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"))
+                        .get_matches();
+
+    let input = matches.value_of("input").expect("is required; qed");
+    let output = matches.value_of("output").expect("is required; qed");
+
+    let module = parity_wasm::deserialize_file(&input).unwrap();
+    let ctor_module = module.clone();
+	let raw_module = parity_wasm::serialize(module).expect("Serialization failed");
+
+    // Invoke packer
+    let mut result_module = utils::pack_instance(raw_module, ctor_module).expect("Packing failed");
+    // Optimize constructor, since it does not need everything
+    utils::optimize(&mut result_module, vec![utils::CALL_SYMBOL]).expect("Optimization failed");
+
+    parity_wasm::serialize_to_file(&output, result_module).expect("Serialization failed");
+}