-- 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: -- luacrypto >= 0.3 -- <http://mkottman.github.io/luacrypto/> -- local crypto = require("crypto") function filter_open(email, page) buffer = "" md5 = crypto.digest("md5", email:sub(2, -2):lower()) end function filter_close() html("<img src='//www.gravatar.com/avatar/" .. md5 .. "?s=13&d=retro' width='13' height='13' alt='Gravatar' /> " .. buffer) return 0 end function filter_write(str) buffer = buffer .. str end