share/util/resolve_redirections.lua

   1
   2 -- libquvi-scripts
   3 -- Copyright (C) 2012  Toni Gundogdu <legatvs@gmail.com>
   4 --
   5 -- This file is part of libquvi-scripts <http://quvi.sourceforge.net/>.
   6 --
   7 -- This library is free software; you can redistribute it and/or
   8 -- modify it under the terms of the GNU Lesser General Public
   9 -- License as published by the Free Software Foundation; either
  10 -- version 2.1 of the License, or (at your option) any later version.
  11 --
  12 -- This library is distributed in the hope that it will be useful,
  13 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 -- Lesser General Public License for more details.
  16 --
  17 -- You should have received a copy of the GNU Lesser General Public
  18 -- License along with this library; if not, write to the Free Software
  19 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20 -- 02110-1301  USA
  21 --
  22
  23 local ResolveExceptions = {} -- Utility functions unique to this script
  24
  25 function resolve_redirections(qargs)
  26   -- Let libcURL resolve the URL redirections for us.
  27   local resolved, dst = quvi.resolve(qargs.input_url)
  28   if not resolved then return qargs.input_url end
  29
  30   -- Apply any exception rules to the destination URL.
  31   return ResolveExceptions.YouTube(qargs, dst)
  32 end
  33
  34 --
  35 -- Utility functions
  36 --
  37
  38 function ResolveExceptions.YouTube(qargs, dst)
  39   -- [UPDATE] 2012-11-18: g00gle servers seem not to strip the #t anymore
  40   return dst
  41 --[[
  42   -- Preserve the t= parameter (if any). The g00gle servers
  43   -- strip them from the destination URL after redirecting.
  44   -- e.g. http://www.youtube.com/watch?v=LWxTGJ3TK1U#t=2m22s
  45   --   -> http://www.youtube.com/watch?v=LWxTGJ3TK1U
  46   return dst .. (qargs.input_url:match('(#t=%w+)') or '')
  47 ]]--
  48 end
  49
  50 -- vim: set ts=2 sw=2 tw=72 expandtab: