filters/email-gravatar.lua

   1 -- This script may be used with the email-filter or repo.email-filter settings in cgitrc.
   2 -- It adds gravatar icons to author names. It is designed to be used with the lua:
   3 -- prefix in filters. It is much faster than the corresponding python script.
   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         html("<img src='//www.gravatar.com/avatar/" .. md5 .. "?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> " .. buffer)
  19         return 0
  20 end
  21
  22 function filter_write(str)
  23         buffer = buffer .. str
  24 end
  25
  26