Ashish Jaiswal Blog

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Ruby Song Downloader

Since I’m working on puppet DSL language from past year, so always wanted to take on ruby. Finally got the chances to do some task. I have had lost many of my songs library. So wanted to keep track of everything and needed to start from scratch. As I love Hindi/Bollywood songs, the only site comes to my mind is songspk.name and I had some trouble accessing it, due to Indian goverment blocking or either my ISP.

To get out of this, I found a site allmp3song.com, which is truly simple and fast. The only problem was, I can’t download the whole movie songs at a time.

You have to click on each songs and download it manually, which was very frustating. So thought of writing a script. I wrote one in bash which was quite simple by using wget. Then I took this as a self owned task in.

Below is the script, which I wrote, please let me know if any improvement can be done. So far its working like charm..

mp3song.rb 
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#!/usr/bin/ruby
# Date : 18/04/2014
# Author : Ashish Jaiswal
# Email ID : ashish1099@gmail.com
# Purpose : Learning some ruby basics.

require 'nokogiri'
require 'open-uri'
require 'net/http'

filelist_id = ARGV[0]

if ARGV.empty?
  puts " Sorry..... Please read this carefully

Please put album code. To find album code, go to any browser and search for required album.
Example : 
 http://allmp3song.com/filelist/3330/arijit_singh_-_mtv_unplugged_season_3_%282013%29/new2old/1
     
So the album code is 3330"
exit
end

def fetch(uri_str, songs_name, song_name, limit = 10)
  # You should choose a better exception.
  raise ArgumentError, 'too many HTTP redirects' if limit == 0

      encoded_url = URI.encode(uri_str)
      url = URI.parse(encoded_url)   
      req = Net::HTTP::Get.new(url.path, { 'User-Agent' => "Ruby/#{RUBY_VERSION}" })
      response = Net::HTTP.start(url.host, url.port) do |http|
          http.request(req)
      end
  
  case response
      when Net::HTTPSuccess then
          response
      when Net::HTTPRedirection then
          location = response['location']
          puts "Started downloading ====> ===> ==> #{song_name}\n\n"
          begin
              File.open(songs_name, "wb") do | saved_file |
                              open((URI.parse(URI.encode("#{location}"))), "rb") do | read_file |
                                  saved_file.write(read_file.read)                    
                                        end # End of read_file
                              end # End of saved_file
              puts "Saved as #{song_name}"   
              puts "=============================================================================================================="
          rescue OpenURI::HTTPError
              puts "Song is not present on the server.. Sorry :)\n\n"
          end
      else
          response.value
      end
end


BASE_MP3SONGS_URL = "http://allmp3song.com"
FILELIST_URL = "#{BASE_MP3SONGS_URL}/filelist/#{filelist_id}/*/new2old/1"

# Calling NOKOGIRI to parse HTML 
songs_list = Nokogiri::HTML(open(FILELIST_URL))

# Get the album name
album_name = songs_list.css('div#mainDiv h2').text.strip.gsub(/\s: Mp3 Songs/, "")
album_path = "/home/songs/#{album_name}/"
Dir.mkdir(album_path) unless File.exists?(album_path)

# Get the list of page of particular albums.
pagination = songs_list.css('div.pgn').text.strip.gsub(/\D/, "").slice!(1).to_i

# Run a loop to get the songs_id and based on id get the songs_name
# Example http://allmp3song.com/files/download/id/24398

(0..10).each do | i |
  begin    
      song_id = songs_list.css("a.fileName")[i]["href"].match(/\d{3,}/)
      between_url = "/files/download/id/"
      url_download = [ BASE_MP3SONGS_URL, between_url, song_id ].join
      song_name = songs_list.css("a.fileName div > text()").text.strip.split("| ").fetch(i).gsub(/\D$/, "")
      songs_name = "#{album_path}#{song_name}"
      print fetch(url_download, songs_name, song_name)
  rescue NoMethodError
  end # End of BEGIN
end # End of DO

# Looking for Second page.
if pagination > 1
  FILELIST_URL02 = "#{BASE_MP3SONGS_URL}/filelist/#{filelist_id}/*/new2old/2"
  songs_list02 = Nokogiri::HTML(open(FILELIST_URL02))
(0..10).each do | i |
  begin    
      song_id = songs_list02.css("a.fileName")[i]["href"].match(/\d{3,}/)
      between_url = "/files/download/id/"
      url_download = [ BASE_MP3SONGS_URL, between_url, song_id ].join
      song_name = songs_list02.css("a.fileName div > text()").text.strip.split("| ").fetch(i).gsub(/\D$/, "")
      songs_name = "#{album_path}#{song_name}"
      print fetch(url_download, songs_name, song_name)
  rescue NoMethodError
      end # End of BEGIN
  end # End of DO
end # End of IF

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