From cfe5f4fa7750619b5ce309464c2fb52584172133 Mon Sep 17 00:00:00 2001
From: DarkWiiPlayer <darkwiiplayer@hotmail.com>
Date: Thu, 27 Aug 2020 14:45:03 +0200
Subject: [PATCH] Add --cache option to factors script

---
 bin/factors | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/bin/factors b/bin/factors
index b6f72a9..8656277 100755
--- a/bin/factors
+++ b/bin/factors
@@ -7,10 +7,19 @@ local arrr = require 'arrr'
 local parser = arrr {
 	{ "Enable batch factorization", "--batch", "-b" };
 	{ "Initialize prime table up to the Nth prime", "--initialize", "-n", "n", tonumber };
+  { "Cache file", "--cache", "-c", 1, io.open };
 }
 
 local options = parser {...}
 
+if options.cache then
+  local i = 1
+  for line in options.cache:lines() do
+    primes[i] = tonumber(line)
+    i = i + 1
+  end
+end
+
 if options.initialize then
 	for i=1, options.initialize do
 		local _ = primes[i]