From 1fc5e5d0d3d71cdad94abd9c0f2bedb71cf8fabc Mon Sep 17 00:00:00 2001
From: yariplus <tafike@gmail.com>
Date: Sun, 16 Oct 2016 14:48:29 -0400
Subject: [PATCH] getSortedSetRevRangeByLex

---
 src/database/redis/sorted.js | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/database/redis/sorted.js b/src/database/redis/sorted.js
index e02366c08f..e1fcb0cc8e 100644
--- a/src/database/redis/sorted.js
+++ b/src/database/redis/sorted.js
@@ -299,9 +299,25 @@ module.exports = function (redisClient, module) {
 		if (max !== '+') {
 			max = '(' + max;
 		}
-		redisClient.zrangebylex([key, min, max, 'LIMIT', start, count], callback);
+
+		sortedSetRangeByLex('zrangebylex', key, min, max, start, count, callback)
 	};
 
+	module.getSortedSetRevRangeByLex = function (key, max, min, start, count, callback) {
+		if (min !== '-') {
+			min = '[' + min;
+		}
+		if (max !== '+') {
+			max = '(' + max;
+		}
+
+		sortedSetRangeByLex('zrevrangebylex', key, max, min, start, count, callback)
+	};
+
+	function sortedSetRangeByLex(method, key, min, max, start, count, callback) {
+		redisClient[method]([key, min, max, 'LIMIT', start, count], callback);
+	}
+
 	module.sortedSetIntersectCard = function (keys, callback) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return callback(null, 0);