share/lua/website/ted.lua

   1
   2 -- libquvi-scripts
   3 -- Copyright (C) 2012  Toni Gundogdu <legatvs@gmail.com>
   4 -- Copyright (C) 2011  Bastien Nocera <hadess@hadess.net>
   5 --
   6 -- This file is part of libquvi-scripts <http://quvi.sourceforge.net/>.
   7 --
   8 -- This library is free software; you can redistribute it and/or
   9 -- modify it under the terms of the GNU Lesser General Public
  10 -- License as published by the Free Software Foundation; either
  11 -- version 2.1 of the License, or (at your option) any later version.
  12 --
  13 -- This library is distributed in the hope that it will be useful,
  14 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 -- Lesser General Public License for more details.
  17 --
  18 -- You should have received a copy of the GNU Lesser General Public
  19 -- License along with this library; if not, write to the Free Software
  20 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21 -- 02110-1301  USA
  22 --
  23
  24 local Ted = {} -- Utility functions unique to this script
  25
  26 -- Identify the script.
  27 function ident(self)
  28     package.path = self.script_dir .. '/?.lua'
  29     local C      = require 'quvi/const'
  30     local r      = {}
  31     r.domain     = "ted%.com"
  32     r.formats    = "default|best"
  33     r.categories = C.proto_http
  34     local U      = require 'quvi/util'
  35     r.handles    = U.handles(self.page_url, {r.domain}, {"/talks/.+$"})
  36     return r
  37 end
  38
  39 -- Query available formats.
  40 function query_formats(self)
  41     self.formats  = "default"
  42     Ted.is_external(self, quvi.fetch(self.page_url))
  43     return self
  44 end
  45
  46 -- Parse video URL.
  47 function parse(self)
  48     self.host_id = "ted"
  49     local p = quvi.fetch(self.page_url)
  50
  51     if Ted.is_external(self, p) then
  52         return self
  53     end
  54
  55     self.id = p:match('ti:"(%d+)"')
  56                 or error("no match: media id")
  57
  58     self.title = p:match('<title>(.-)%s+|')
  59                     or error("no match: media title")
  60
  61     self.thumbnail_url = p:match('rel="image_src" href="(.-)"') or ''
  62
  63     local u  = p:match('"og:video"%s+content="(.-)"')
  64                 or error("no match: media url")
  65     self.url = {u}
  66
  67     return self
  68 end
  69
  70 --
  71 -- Utility functions
  72 --
  73
  74 function Ted.is_external(self, page)
  75     -- Some of the videos are hosted elsewhere.
  76     self.redirect_url = page:match('name="movie"%s+value="(.-)"') or ''
  77     return #self.redirect_url > 0
  78 end
  79
  80 -- vim: set ts=4 sw=4 tw=72 expandtab: