filters/email-libravatar.lua

   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
  10 local crypto = require("crypto")
  11
  12 function filter_open(email, page)
  13         buffer = ""
  14         md5 = crypto.digest("md5", email:sub(2, -2):lower())
  15 end
  16
  17 function 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
  21 end
  22
  23 function filter_write(str)
  24         buffer = buffer .. str
  25 end
  26
  27