share/lua/website/arte.lua

   1
   2 -- quvi
   3 -- Copyright (C) 2011  Toni Gundogdu <legatvs@gmail.com>
   4 -- Copyright (C) 2011  Raphaël Droz <raphael.droz+floss@gmail.com>
   5 --
   6 -- This file is part of quvi <http://quvi.googlecode.com/>.
   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 -- NOTE: Most videos expire some (7?) days after their original broadcast
  24
  25 local Arte = {} -- Utility functions unique to to this script.
  26
  27 -- Identify the script.
  28 function ident(self)
  29     package.path = self.script_dir .. '/?.lua'
  30     local C      = require 'quvi/const'
  31     local r      = {}
  32     r.domain     = "videos.arte.tv"
  33     r.formats    = "default|best"
  34     r.categories = C.proto_rtmp
  35     local U      = require 'quvi/util'
  36     r.handles    = U.handles(self.page_url, {r.domain}, {"/%w+/videos/"})
  37     return r
  38 end
  39
  40 -- Query available formats.
  41 function query_formats(self)
  42     local config  = Arte.get_config(self)
  43     local U       = require 'quvi/util'
  44     local formats = Arte.iter_formats(config, U)
  45
  46     local t = {}
  47     for _,v in pairs(formats) do
  48         table.insert(t, Arte.to_s(v))
  49     end
  50
  51     table.sort(t)
  52     self.formats = table.concat(t, "|")
  53
  54     return self
  55 end
  56
  57 -- Parse media URL.
  58 function parse(self)
  59     self.host_id  = 'arte'
  60     local config  = Arte.get_config(self)
  61     local U       = require 'quvi/util'
  62     local formats = Arte.iter_formats(config, U)
  63     local format  = U.choose_format(self, formats,
  64                                     Arte.choose_best,
  65                                     Arte.choose_default,
  66                                     Arte.to_s)
  67     self.title         = format.title or error('no match: title')
  68     self.id            = format.id or error('no match: id')
  69     self.thumbnail_url = format.thumb or ''
  70     self.url           = {format.url or error("no match: media url")}
  71
  72     return self
  73 end
  74
  75 --
  76 -- Utility functions
  77 --
  78
  79 function Arte.get_config(self)
  80     local page       = quvi.fetch(self.page_url)
  81     local _,_,s      = page:find('videorefFileUrl = "(.-)"')
  82     local config_url = s or error('no match: config url')
  83     local config     = quvi.fetch(config_url, {fetch_type = 'config'})
  84     return Arte.get_lang_config(config)
  85 end
  86
  87 function Arte.get_lang_config(config)
  88     local t = {}
  89     for lang,url in config:gfind('<video lang="(%w+)" ref="(.-)"') do
  90         table.insert(t, {lang=lang,
  91                          config=quvi.fetch(url, {fetch_type = 'config'})})
  92     end
  93     return t
  94 end
  95
  96 function Arte.iter_lang_formats(lang_config, t, U)
  97
  98     local p = '<video id="(%d+)" lang="(%w+)"'
  99            .. '.-<name>(.-)<'
 100            .. '.-<firstThumbnailUrl>(.-)<'
 101            .. '.-<dateExpiration>(.-)<'
 102            .. '.-<dateVideo>(.-)<'
 103
 104     local config = lang_config.config
 105
 106     local id,lang,title,thumb,exp,date = config:match(p)
 107     if not id then error("no match: media id, etc.") end
 108
 109     if lang ~= lang_config.lang then
 110         error("no match: lang")
 111     end
 112
 113     if Arte.has_expired(exp, U) then
 114         error('error: media no longer available (expired)')
 115     end
 116
 117     local urls = config:match('<urls>(.-)</urls>')
 118                   or error('no match: urls')
 119
 120     for q,u in urls:gfind('<url quality="(%w+)">(.-)<') do
 121 --        print(q,u)
 122         table.insert(t, {lang=lang,   quality=q,   url=u,
 123                          thumb=thumb, title=title, id=id})
 124     end
 125 end
 126
 127 function Arte.iter_formats(config, U)
 128     local t = {}
 129     for _,v in pairs(config) do
 130         Arte.iter_lang_formats(v, t, U)
 131     end
 132     return t
 133 end
 134
 135 function Arte.has_expired(s, U)
 136     return U.to_timestamp(s) - os.time() < 0
 137 end
 138
 139 function Arte.choose_best(formats) -- Whatever matches 'hd' first
 140     local r
 141     for _,v in pairs(formats) do
 142         if Arte.to_s(v):find('hd') then
 143             return v
 144         end
 145     end
 146     return r
 147 end
 148
 149 function Arte.choose_default(formats) -- Whatever matches 'sd' first
 150     local r
 151     for _,v in pairs(formats) do
 152         if Arte.to_s(v):find('sd') then
 153             return v
 154         end
 155     end
 156     return r
 157 end
 158
 159 function Arte.to_s(t)
 160     return string.format("%s_%s", t.quality, t.lang)
 161 end
 162
 163 -- vim: set ts=4 sw=4 tw=72 expandtab: