From 6fa71c7efadb990aad14d1c6a7833e9cae88436d Mon Sep 17 00:00:00 2001
From: Biswakalyan Bhuyan <biswa@surgot.in>
Date: Thu, 6 Apr 2023 16:39:52 +0530
Subject: cgit

---
 filters/email-libravatar.lua | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 filters/email-libravatar.lua

(limited to 'filters/email-libravatar.lua')

diff --git a/filters/email-libravatar.lua b/filters/email-libravatar.lua
new file mode 100644
index 0000000..7336baf
--- /dev/null
+++ b/filters/email-libravatar.lua
@@ -0,0 +1,36 @@
+-- This script may be used with the email-filter or repo.email-filter settings in cgitrc.
+-- It adds libravatar icons to author names. It is designed to be used with the lua:
+-- prefix in filters.
+--
+-- Requirements:
+-- 	luaossl
+-- 	<http://25thandclement.com/~william/projects/luaossl.html>
+--
+
+local digest = require("openssl.digest")
+
+function md5_hex(input)
+	local b = digest.new("md5"):final(input)
+	local x = ""
+	for i = 1, #b do
+		x = x .. string.format("%.2x", string.byte(b, i))
+	end
+	return x
+end
+
+function filter_open(email, page)
+	buffer = ""
+	md5 = md5_hex(email:sub(2, -2):lower())
+end
+
+function filter_close()
+	baseurl = os.getenv("HTTPS") and "https://seccdn.libravatar.org/" or "http://cdn.libravatar.org/"
+	html("<img src='" .. baseurl .. "avatar/" .. md5 .. "?s=13&amp;d=retro' width='13' height='13' alt='Libravatar' /> " .. buffer)
+	return 0
+end
+
+function filter_write(str)
+	buffer = buffer .. str
+end
+
+
-- 
cgit v1.2.3-59-g8ed1b