From 0b0e02875dbc4d7d795cafe6e5720aa66b32e1ac Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 2 Nov 2024 13:41:36 +0100
Subject: Naive approach to disk-based masking directly on the trigrams

---
 disk-simple-mask.lua | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100755 disk-simple-mask.lua

(limited to 'disk-simple-mask.lua')

diff --git a/disk-simple-mask.lua b/disk-simple-mask.lua
new file mode 100755
index 0000000..ba41f7b
--- /dev/null
+++ b/disk-simple-mask.lua
@@ -0,0 +1,27 @@
+#!/usr/bin/env lua
+local disk = require "disk"
+local eyes = require "eyes"
+local format = require "format"
+local reading = require "reading"
+
+
+local function mask (ring, index, value)
+	local offset = (index - 1) % #ring
+	if ring[offset + 1] == 0 then
+		return value
+	else
+		return 0
+	end
+end
+
+
+for _, message in ipairs(eyes) do
+	local values = {}
+	for index, a, b, c in reading.trigrams(message) do
+		a = mask(disk.eyes1, index, a)
+		b = mask(disk.eyes2, index, b)
+		c = mask(disk.eyes3, index, c)
+		table.insert(values, reading.trigram_to_value(a, b, c))
+	end
+	print(format.ascii32(values))
+end
-- 
cgit v1.1