--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cgit/filters/email-libravatar-korg.lua	Wed Sep 04 08:15:23 2024 +0800
@@ -0,0 +1,36 @@
+-- This script may be used with the email-filter or repo.email-filter settings in cgitrc.
+-- It adds gravatar icons to author names. It is designed to be used with the lua:
+-- prefix in filters. It is much faster than the corresponding python script.
+--
+-- 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()
+   html("<span class='libravatar'>" ..
+   "<img class='inline' src='//www.gravatar.com/avatar/" .. md5 .. "?s=13&d=retro' />" ..
+   "<img class='onhover' src='//www.gravatar.com/avatar/" .. md5 .. "?s=128&d=retro' />" ..
+   "</span>" .. buffer)
+   return 0
+end
+
+function filter_write(str)
+        buffer = buffer .. str
+end
\ No newline at end of file