1-- This script may be used with the email-filter or repo.email-filter settings in cgitrc.
 2-- It adds libravatar icons to author names. It is designed to be used with the lua:
 3-- prefix in filters.
 4--
 5-- Requirements:
 6-- 	luacrypto >= 0.3
 7-- 	<http://mkottman.github.io/luacrypto/>
 8--
 9
10local crypto = require("crypto")
11
12function filter_open(email, page)
13	buffer = ""
14	md5 = crypto.digest("md5", email:sub(2, -2):lower())
15end
16
17function filter_close()
18	baseurl = os.getenv("HTTPS") and "https://seccdn.libravatar.org/" or "http://cdn.libravatar.org/"
19	html("<img src='" .. baseurl .. "avatar/" .. md5 .. "?s=13&amp;d=retro' width='13' height='13' alt='Libravatar' /> " .. buffer)
20	return 0
21end
22
23function filter_write(str)
24	buffer = buffer .. str
25end
26
27