share/media/academicearth.lua

   1 -- libquvi-scripts
   2 -- Copyright (C) 2010-2013  Toni Gundogdu <legatvs@gmail.com>
   3 --
   4 -- This file is part of libquvi-scripts <http://quvi.sourceforge.net/>.
   5 --
   6 -- This program is free software: you can redistribute it and/or
   7 -- modify it under the terms of the GNU Affero General Public
   8 -- License as published by the Free Software Foundation, either
   9 -- version 3 of the License, or (at your option) any later version.
  10 --
  11 -- This program is distributed in the hope that it will be useful,
  12 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 -- GNU Affero General Public License for more details.
  15 --
  16 -- You should have received a copy of the GNU Affero General
  17 -- Public License along with this program.  If not, see
  18 -- <http://www.gnu.org/licenses/>.
  19 --
  20
  21 --
  22 -- NOTE: aearth hosts the media at youtube, return 'goto_url'
  23 --
  24
  25 local AcademicEarth = {} -- Utility functions specific to this script
  26
  27 -- Identify the media script.
  28 function ident(qargs)
  29   return {
  30     can_parse_url = AcademicEarth.can_parse_url(qargs),
  31     domains = table.concat({'academicearth.org'}, ',')
  32   }
  33 end
  34
  35 -- Parse media properties.
  36 function parse(qargs)
  37   return AcademicEarth.to_media_url(qargs)
  38 end
  39
  40 --
  41 -- Utility functions
  42 --
  43
  44 function AcademicEarth.can_parse_url(qargs)
  45   local U = require 'socket.url'
  46   local t = U.parse(qargs.input_url)
  47   if t and t.scheme and t.scheme:lower():match('^http$')
  48        and t.host   and t.host:lower():match('academicearth%.org$')
  49        and t.path   and t.path:lower():match('^/lectures/')
  50   then
  51     return true
  52   else
  53     return false
  54   end
  55 end
  56
  57 function AcademicEarth.to_media_url(qargs)
  58   local p = quvi.http.fetch(qargs.input_url).data
  59   qargs.goto_url = p:match('"(http://www%.youtube%.com/watch.-)"')
  60                       or error('no match: unrecognized media source')
  61   return qargs
  62 end
  63
  64 -- vim: set ts=2 sw=2 tw=72 expandtab: