Merge pull request #173 from ewasm/cli

Create a proper CLI

.travis.yml

@@ -47,6 +47,8 @@ before_install:
 script:
   - |
     if [ $LANG = js ]; then
+      bin/evm2wasm.js 0x600160020200 trace
+
       npm run $TEST_SUITE
     fi
   - |

README.md

@@ -4,11 +4,17 @@
 
 [![js-standard-style](https://cdn.rawgit.com/feross/standard/master/badge.svg)](https://github.com/feross/standard)  
 
-EVM (Ethereum VM 1.0) to [eWASM](https://github.com/ethereum/evm2.0-design) transcompiler. Here is a online [frontend](https://ewasm.github.io/evm2wasm-frontend/dist/).
+EVM (Ethereum VM 1.0) to [eWASM](https://github.com/ewasm/design) transcompiler. Here is a online [frontend](https://ewasm.github.io/evm2wasm-frontend/dist/).
 
 # INSTALL
 `npm install evm2wasm`
 
+# USE
+There is a commandline tool to transcompile EVM input:
+```
+$ evm2wasm 0x600160020200 trace
+```
+
 # DEVELOP
 * After any changes to `.wast` file, `npm  run build` needs to be run to compile the files into a .json file 
 * To rebuild the documentation run `npm run build:docs`

bin/evm2wasm.js

@@ -0,0 +1,17 @@
+#!/usr/bin/env node
+
+const evm2wasm = require('../index.js')
+const ethUtil = require('ethereumjs-util')
+
+const input = ethUtil.toBuffer(process.argv[2])
+
+evm2wasm.evm2wasm(input, {
+  stackTrace: process.argv[3] === 'trace',
+  tempName: 'temp',
+  inlineOps: true,
+  wabt: true
+}).then(function (output) {
+  console.log(output.toString('binary'))
+}).catch(function (err) {
+  console.err('Failed: ' + err)
+})

package.json

@@ -10,6 +10,9 @@
     "build": "node ./wasm/generateInterface.js",
     "build:docs": "documentation build --github  -f md ./index.js > ./docs/index.md"
   },
+  "bin": {
+    "evm2wasm": "bin/evm2wasm.js"
+  },
   "author": "mjbecze <[email protected]>",
   "license": "MPL-2.0",
   "devDependencies": {