examples/cgit-commit-filter.lua

   1 -- Copyright (C) 2015-2018 all contributors <meta@public-inbox.org>
   2 -- License: GPLv2 or later <https://www.gnu.org/licenses/gpl-2.0.txt>
   3 -- This commit filter maps a subject line to a search URL of a public-inbox
   4 -- disclaimer: written by someone who does not know Lua.
   5 --
   6 -- This requires cgit linked with Lua
   7 -- Usage (in your cgitrc(5) config file):
   8 --
   9 --   commit-filter=lua:/path/to/this/script.lua
  10 --
  11 -- Example site: https://80x24.org/public-inbox.git/
  12
  13 local urls = {}
  14 urls['public-inbox.git'] = 'https://public-inbox.org/meta/'
  15 -- additional URLs here...
  16
  17 function filter_open(...)
  18         lineno = 0
  19         buffer = ""
  20 end
  21
  22 function filter_close()
  23         if lineno == 1 and string.find(buffer, "\n") == nil then
  24                 u = urls[os.getenv('CGIT_REPO_URL')]
  25                 if u == nil then
  26                         html(buffer)
  27                 else
  28                         html('<a href="' .. u .. '?x=t&amp;q=')
  29                         html_url_arg('"' .. buffer .. '"')
  30                         html('"><tt>')
  31                         html_txt(buffer)
  32                         html('</tt></a>')
  33                 end
  34         else
  35                 html(buffer)
  36         end
  37         return 0
  38 end
  39
  40 function filter_write(str)
  41         lineno = lineno + 1
  42         buffer = buffer .. str
  43 end