Merge pull request #589 from 0xProject/feature/truffle-sol-cov

Sol-cov artifact Adapters (truffle)

1 files changed, 7 insertions, 2 deletions

diff --git a/packages/utils/src/address_utils.ts b/packages/utils/src/address_utils.ts
index e25bde249..1fc960408 100644
--- a/packages/utils/src/address_utils.ts
+++ b/packages/utils/src/address_utils.ts
@@ -1,7 +1,10 @@
+import { addHexPrefix, stripHexPrefix } from 'ethereumjs-util';
 import * as jsSHA3 from 'js-sha3';
+import * as _ from 'lodash';
 
 const BASIC_ADDRESS_REGEX = /^(0x)?[0-9a-f]{40}$/i;
 const SAME_CASE_ADDRESS_REGEX = /^(0x)?([0-9a-f]{40}|[0-9A-F]{40})$/;
+const ADDRESS_LENGTH = 40;
 
 export const addressUtils = {
     isChecksumAddress(address: string): boolean {
@@ -9,8 +12,7 @@ export const addressUtils = {
         const unprefixedAddress = address.replace('0x', '');
         const addressHash = jsSHA3.keccak256(unprefixedAddress.toLowerCase());
 
-        const addressLength = 40;
-        for (let i = 0; i < addressLength; i++) {
+        for (let i = 0; i < ADDRESS_LENGTH; i++) {
             // The nth letter should be uppercase if the nth digit of casemap is 1
             const hexBase = 16;
             const lowercaseRange = 7;
@@ -38,4 +40,7 @@ export const addressUtils = {
             return isValidChecksummedAddress;
         }
     },
+    padZeros(address: string): string {
+        return addHexPrefix(_.padStart(stripHexPrefix(address), ADDRESS_LENGTH, '0'));
+    },
 };