From b20e972bec52781de806fb050e72d44b729c6541 Mon Sep 17 00:00:00 2001
From: Marek Kotewicz <marek.kotewicz@gmail.com>
Date: Sat, 31 Jan 2015 15:22:05 +0100
Subject: few methods moved to utils

---
 lib/utils.js | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

(limited to 'lib/utils.js')

diff --git a/lib/utils.js b/lib/utils.js
index f9fcd3389..5cd6ec8d6 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -72,10 +72,42 @@ var fromAscii = function(str, pad) {
     return "0x" + hex;
 };
 
+/// @returns display name for function/event eg. multiply(uint256) -> multiply
+var extractDisplayName = function (name) {
+    var length = name.indexOf('('); 
+    return length !== -1 ? name.substr(0, length) : name;
+};
+
+/// @returns overloaded part of function/event name
+var extractTypeName = function (name) {
+    /// TODO: make it invulnerable
+    var length = name.indexOf('(');
+    return length !== -1 ? name.substr(length + 1, name.length - 1 - (length + 1)) : "";
+};
+
+/// Filters all function from input abi
+/// @returns abi array with filtered objects of type 'function'
+var filterFunctions = function (json) {
+    return json.filter(function (current) {
+        return current.type === 'function'; 
+    }); 
+};
+
+/// Filters all events form input abi
+/// @returns abi array with filtered objects of type 'event'
+var filterEvents = function (json) {
+    return json.filter(function (current) {
+        return current.type === 'event';
+    });
+};
 
 module.exports = {
     findIndex: findIndex,
     toAscii: toAscii,
-    fromAscii: fromAscii
+    fromAscii: fromAscii,
+    extractDisplayName: extractDisplayName,
+    extractTypeName: extractTypeName,
+    filterFunctions: filterFunctions,
+    filterEvents: filterEvents
 };
 
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