share/lua/website/vimeo.lua

   1
   2 -- libquvi-scripts
   3 -- Copyright (C) 2010-2011  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 -- w/ HD: <http://vimeo.com/1485507>
  24 -- no HD: <http://vimeo.com/10772672>
  25
  26 local Vimeo = {} -- Utility functions unique to this script.
  27
  28 -- Identify the script.
  29 function ident(self)
  30     package.path = self.script_dir .. '/?.lua'
  31     local C      = require 'quvi/const'
  32     local r      = {}
  33     r.domain     = "vimeo%.com"
  34     r.formats    = "default|best"
  35     r.categories = C.proto_http
  36     local U      = require 'quvi/util'
  37     r.handles    = U.handles(self.page_url, {r.domain}, {"/%d+$"})
  38     return r
  39 end
  40
  41 -- Query available formats.
  42 function query_formats(self)
  43     local config  = Vimeo.get_config(self)
  44     local formats = Vimeo.iter_formats(self, config)
  45
  46     local t = {}
  47     for _,v in pairs(formats) do
  48         table.insert(t, Vimeo.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  = "vimeo"
  60     local config  = Vimeo.get_config(self)
  61
  62     local _,_,s = config:find("<caption>(.-)</")
  63     self.title  = s or error("no match: media title")
  64
  65     local _,_,s = config:find('<duration>(%d+)')
  66     self.duration = (tonumber(s) or 0) * 1000 -- to msec
  67
  68     local _,_,s = config:find('<thumbnail>(.-)<')
  69     self.thumbnail_url = s or ''
  70
  71     local formats = Vimeo.iter_formats(self, config)
  72     local U       = require 'quvi/util'
  73     local format  = U.choose_format(self, formats,
  74                                      Vimeo.choose_best,
  75                                      Vimeo.choose_default,
  76                                      Vimeo.to_s)
  77                         or error("unable to choose format")
  78     self.url      = {format.url or error("no match: media url")}
  79     return self
  80 end
  81
  82 --
  83 -- Utility functions
  84 --
  85
  86 function Vimeo.normalize(url)
  87     url = url:gsub("player.", "") -- player.vimeo.com
  88     url = url:gsub("/video/", "/") -- player.vimeo.com
  89     return url
  90 end
  91
  92 function Vimeo.get_config(self)
  93     self.page_url = Vimeo.normalize(self.page_url)
  94
  95     local _,_,s   = self.page_url:find('vimeo.com/(%d+)')
  96     self.id       = s or error("no match: media id")
  97
  98     local config_url = "http://vimeo.com/moogaloop/load/clip:" .. self.id
  99     local config = quvi.fetch(config_url, {fetch_type = 'config'})
 100
 101     if config:find('<error>') then
 102         local _,_,s = config:find('<message>(.-)[\n<]')
 103         error( (not s) and "no match: error message" or s )
 104     end
 105
 106     return config
 107 end
 108
 109 function Vimeo.iter_formats(self, config)
 110     local _,_,s = config:find('<isHD>(%d+)')
 111     local isHD  = tonumber(s) or 0
 112
 113     local t = {}
 114     Vimeo.add_format(self, config, t, 'sd')
 115     if isHD == 1 then
 116         Vimeo.add_format(self, config, t, 'hd')
 117     end
 118
 119     return t
 120 end
 121
 122 function Vimeo.add_format(self, config, t, quality)
 123     table.insert(t,
 124         {quality=quality,
 125          url=Vimeo.to_url(self, config, quality)})
 126 end
 127
 128 function Vimeo.choose_best(formats) -- Last is 'best'
 129     local r
 130     for _,v in pairs(formats) do r = v end
 131     return r
 132 end
 133
 134 function Vimeo.choose_default(formats) -- First is 'default'
 135     for _,v in pairs(formats) do return v end
 136 end
 137
 138 function Vimeo.to_url(self, config, quality)
 139     local _,_,s = config:find("<request_signature>(.-)</")
 140     local sign  = s or error("no match: request signature")
 141
 142     local _,_,s = config:find("<request_signature_expires>(.-)</")
 143     local exp   = s or error("no match: request signature expires")
 144
 145     local fmt_s = "http://vimeo.com/moogaloop/play/clip:%s/%s/%s/?q=%s"
 146
 147     return string.format(fmt_s, self.id, sign, exp, quality)
 148 end
 149
 150 function Vimeo.to_s(t)
 151     return string.format("%s", t.quality)
 152 end
 153
 154 -- vim: set ts=4 sw=4 tw=72 expandtab: