Bandcamp VLC plugin

bandcamp.lua

--[[--
  bandcamp.lua - Bandcamp album/track player plugin
  Copyright (C) 2016-2018 Sono (https://github.com/MarcuzD)
  
  This program is free software: you can redistribute it and/or modify  
  it under the terms of the GNU General Public License as   
  published by the Free Software Foundation, either version 3, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful, but 
  WITHOUT ANY WARRANTY; without even the implied warranty of 
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
  General Lesser Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program. If not, see <http://www.gnu.org/licenses/>.
  
  
  Note: this script requires JSON.lua to be downloaded from http://regex.info/code/JSON.lua as VLC/lua/modules/JSON.lua
  
  An example album link: https://gilvasunner.bandcamp.com/album/cd-grand-beta
  An example track link: https://aavepyora.bandcamp.com/track/valo-voima-ja-vapaus
  
  My GitHub page:     https://github.com/MarcuzD
  My Youtube channel: https://youtube.com/user/mCucc
  
--]]--

local json = require("JSON"):new()
function json.assert(wat, msg)
	if wat then
		print(msg)
	else
		vlc.msg.err(msg)
	end
end

-- Probe function.
function probe()
    return ( vlc.access == "https" or vlc.access == "http" )
        and (string.match( vlc.path, "([^%.]%.bandcamp%.com/album/[^/]+)$")
            or string.match( vlc.path, "([^%.]%.bandcamp%.com/track/[^/]+)$"))
end

local function tf(s)
  local t = {}
  local ejj
  t.main, _, ejj = json:decode(s, 1, nil)
  if not t.main then local _, charnum =  ejj:match("column (%d)+") charnum = tonumber(charnum) vlc.msg.err("================[NO PARSER]================") vlc.msg.err(ejj) vlc.msg.err("================[JSON DUMP]================") vlc.msg.err(s:sub(charnum - 10, charnum + 10)) vlc.msg.err("================[JSON DUMP]================") error(ejj) end
  return t
end

-- Parse function.
function parse()
    local line = vlc.readline()
    while true do
        if not line then break end
        line = line:match("content=\"(https://bandcamp.com/EmbeddedPlayer/[^\"]+)")
        if line then break end
        line = vlc.readline()
    end
    if line == nil then error("No EmbeddedPlayer!") end
    local s, ejj = vlc.stream(line)
    if s == nil then error(ejj) end
    line = s:readline()
    while true do
        if not line then break end
        line = line:match("var playerdata = (.*);$")
        if line then break end
        line = s:readline()
    end
    if not line then error("No playerdata!") end
    local strr = tf(line)
    buf = {}
    for k,v in pairs(strr.main.tracks) do
      buf[#buf + 1 ] =
          {
            path = v.file["mp3-128"],
            name = v.title,
            arturl = (strr.main.album_art_lg and strr.main.album_art_lg or strr.main.album_art),
            title = v.title,
            artist = v.artist,
            url = v.title_link
          }
    end
    return buf
end

I've noticed a problem with handling a track names with / in them. If an album contains such a track there will be a failure to load the playlist in the VLC.

Example:

• https://moodymann.bandcamp.com/album/taken-away-kdj-49 - This is loaded without problem
• https://intlanthem.bandcamp.com/album/who-sent-you - here the first track is titled 1. The Code Noir / Amina 07:30. This album fails to load in the VLC playlist.

I can't believe people are still using this outdated garbage!

I'll install VLC and try to troubleshoot it. Will report back a few days later how it went (I have a job, so my time is limited).

It took me so long to debug this issue!

@zloster I uploaded the updated plugin to a repo instead of this gist https://github.com/SonoSooS/aaa_vlc/blob/master/playlist/bandcamp.lua