add zeroPad

lib/storage.js

@@ -20,6 +20,9 @@ var Storage = function(opts) {
   });
 };
 
+var zeroPad = function(x, length) {
+  return (Array(length).join('0') + parseInt(x)).slice(-length);
+};
 
 var walletPrefix = function(id) {
   return 'w!' + id;
@@ -29,9 +32,9 @@ var opKey = function(key) {
   return key ? '!' + key : '';
 };
 
-var MAX_TS = '999999999999';
+var MAX_TS = Array(14).join('9');
 var opKeyTs = function(key) {
-  return key ? '!' + ('00000000000000' + key).slice(-14) : '';
+  return key ? '!' + zeroPad(key, 14) : '';
 };
 
 
@@ -155,8 +158,8 @@ Storage.prototype.fetchTxs = function(walletId, opts, cb) {
   var txs = [];
   opts = opts || {};
   opts.limit = _.isNumber(opts.limit) ? parseInt(opts.limit) : -1;
-  opts.minTs = _.isNumber(opts.minTs) ? ('00000000000' + parseInt(opts.minTs)).slice(-11) : 0;
+  opts.minTs = _.isNumber(opts.minTs) ? zeroPad(opts.minTs, 11) : 0;
-  opts.maxTs = _.isNumber(opts.maxTs) ? ('00000000000' + parseInt(opts.maxTs)).slice(-11) : MAX_TS;
+  opts.maxTs = _.isNumber(opts.maxTs) ? zeroPad(opts.maxTs, 11) : MAX_TS;
 
   var key = KEY.TXP(walletId, opts.minTs);
   var endkey = KEY.TXP(walletId, opts.maxTs);
@@ -192,8 +195,8 @@ Storage.prototype.fetchNotifications = function(walletId, opts, cb) {
   var txs = [];
   opts = opts || {};
   opts.limit = _.isNumber(opts.limit) ? parseInt(opts.limit) : -1;
-  opts.minTs = _.isNumber(opts.minTs) ? ('00000000000000' + parseInt(opts.minTs)).slice(-14) : 0;
+  opts.minTs = _.isNumber(opts.minTs) ? zeroPad(opts.minTs,11) : 0;
-  opts.maxTs = _.isNumber(opts.maxTs) ? ('00000000000000' + parseInt(opts.maxTs)).slice(-14) : MAX_TS;
+  opts.maxTs = _.isNumber(opts.maxTs) ? zeroPad(opts.maxTs,11) : MAX_TS;
 
   var key = KEY.NOTIFICATION(walletId, opts.minTs);
   var endkey = KEY.NOTIFICATION(walletId, opts.maxTs);