share/media/liveleak.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 local LiveLeak = {} -- Utility functions specific to this script
  22
  23 -- Identify the media script.
  24 function ident(qargs)
  25   return {
  26     can_parse_url = LiveLeak.can_parse_url(qargs),
  27     domains = table.concat({'liveleak.com'}, ',')
  28   }
  29 end
  30
  31 -- Parse media properties.
  32 function parse(qargs)
  33   local p = quvi.http.fetch(qargs.input_url).data
  34
  35   qargs.title = p:match("<title>LiveLeak.com%s+%-%s+(.-)</") or ''
  36
  37   qargs.id = qargs.input_url:match('view%?i=([%w_]+)') or ''
  38
  39   local d = p:match("setup%((.-)%)%.")
  40
  41   if not d then  -- Try the first iframe
  42     qargs.goto_url = p:match('<iframe.-src="(.-)"') or ''
  43     if #qargs.goto_url >0 then
  44       return qargs
  45     else
  46       error('no match: setup')
  47     end
  48   end
  49   -- Cleanup the JSON, otherwise 'json' module will croak.
  50   d = d:gsub('%+encodeURIComponent%(document%.URL%)', '')
  51
  52   local J = require 'json'
  53   local j = J.decode(d)
  54
  55   qargs.thumb_url = j['image'] or ''
  56
  57   qargs.streams = LiveLeak.iter_streams(j)
  58
  59   return qargs
  60 end
  61
  62 --
  63 -- Utility functions
  64 --
  65
  66 function LiveLeak.can_parse_url(qargs)
  67   local U = require 'socket.url'
  68   local t = U.parse(qargs.input_url)
  69   if t and t.scheme and t.scheme:lower():match('^http$')
  70        and t.host   and t.host:lower():match('liveleak%.com$')
  71        and t.path   and t.path:lower():match('^/view')
  72        and t.query  and t.query:lower():match('i=[_%w]+')
  73   then
  74     return true
  75   else
  76     return false
  77   end
  78 end
  79
  80 function LiveLeak.iter_streams(j)
  81   local u = j['file'] or error('no match: media stream URL')
  82   local S = require 'quvi/stream'
  83   return {S.stream_new(u)}
  84 end
  85
  86 -- vim: set ts=2 sw=2 tw=72 expandtab: