encodeABIcall

#!/usr/bin/env node
var ethutil = require("ethereumjs-util")
var BN = require("bn.js")

if(process.argv[2] === "help" || process.argv[2] === "--help" || process.argv[2] === "-h" || process.argv[2] === undefined ){
     console.log("\nusage: getcalldata <function signature typedef> <parameters-list>");
     console.log("\n    e.g. getcalldata \"baz(uint32,bool)\" 12 1")
     console.log("\nIf this works, it works only for static types")
     console.log("\n")
     process.exit();
}

//----------------------------Functions----------------------------------

padLeft = function(n, width, z) {
	z = z || '0';
	n = n + '';
	return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}

//----------------------------Make call data----------------------------------

var funcode = "0x" + ethutil.sha3(process.argv[2]).toString('hex').substr(0,8);

var params = funcode;  //save the function code as first parameter (without padding)
console.log("\nThe function selector is: " + funcode + "\n"); 

//I should make sure that this code works regardless of the type of function parameter
for(var i=3; i<process.argv.length; i++) {

      var p = padLeft(new BN(process.argv[i]).toString(16), 64);
      params += p;

      console.log("Adding encoded parameter ---->  " + p);

}

console.log("\nThe txdata required to make this call is:\n")
console.log(params)
console.log("\n")

process.exit()