From bd1c3a208c7a4a26eeadd1b144b4702afa7631c2 Mon Sep 17 00:00:00 2001
From: Salvo 'LtWorf' Tomaselli <tiposchi@tiscali.it>
Date: Mon, 15 Aug 2016 09:16:22 +0200
Subject: [PATCH] Variable name generator

---
 relational/querysplit.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/relational/querysplit.py b/relational/querysplit.py
index 72cfa58..a80d07a 100644
--- a/relational/querysplit.py
+++ b/relational/querysplit.py
@@ -17,3 +17,26 @@
 # author Salvo "LtWorf" Tomaselli <tiposchi@tiscali.it>
 #
 # This module splits a query into a program.
+
+
+def vargen(avoid, prefix=''):
+    '''
+    Generates temp variables.
+
+    Avoid contains variable names to skip.
+    '''
+    count = 0
+
+    while True:
+        r = ''
+        c = count
+        while True:
+            r = chr((c % 26) + 97) + r
+            if c < 26:
+                break
+            c //= 26
+
+        r = prefix + r
+        if r not in avoid:
+            yield r
+        count += 1