fixing renderText script

soundcloud.rb

@@ -0,0 +1,141 @@
+require 'cgi'
+require 'open-uri'
+require 'json/pure'
+
+class SoundCloud
+  include Observable
+  LIMIT = 100
+
+  def initialize(client_id)
+    @cid = client_id
+    @playlist_pos = -1
+    @download_queue = []
+    @dthread = Thread.new do downloader end
+  end
+
+  def load_playlist(search = nil, offset = 0)
+    search = "" unless search && !search.empty?
+    if search =~ /\s*http(s)?:\/\/(www.)?soundcloud.com.*/
+      url = "http://api.soundcloud.com/resolve.json?url=%s&client_id=%s" % [CGI.escape(search), @cid]
+    else
+      url = "http://api.soundcloud.com/tracks.json?client_id=%s&filter=streamable&limit=%d&offset=%d&q=%s" \
+        % [@cid, LIMIT, offset, CGI.escape(search)]
+    end
+    c = open(url) do |io|
+      io.readlines
+    end.join
+    @tracks = JSON.parse c
+    @tracks = [@tracks] if @tracks.is_a? Hash
+    @tracks.map! do |t|
+      t["mpg123url"] = client_url t['stream_url']
+      t["download"] = client_url t['download_url']
+      t["duration"] = t["duration"].nil? ? 0 : t["duration"].to_i/1000
+      t["bpm"] = t["bpm"].nil? ? 0 : t["bpm"].to_i
+      t[:error] = "Not streamable" if t["stream_url"].nil?
+      t
+    end
+    changed
+    notify_observers :state =>:load, :tracks => @tracks
+    rescue => e
+      @error = {:error => e}
+  end
+
+  def shufflePlaylist
+    return unless @tracks.respond_to? "shuffle!"
+    @tracks.shuffle!
+    changed
+    notify_observers :state => :shuffle, :tracks => @tracks
+  end
+
+  def nextTrack
+    return @error unless @tracks
+    return if @tracks.empty? || @tracks.nil?
+    if @tracks.is_a? Hash
+      t = @tracks
+    else 
+      @playlist_pos += 1
+      @playlist_pos -= @tracks.size if @playlist_pos >= @tracks.size
+      t = @tracks[@playlist_pos]
+      changed
+      notify_observers :state => :next, :position => @playlist_pos
+    end
+    t
+  end
+
+  def prevTrack
+    return @error unless @tracks
+    return if @tracks.empty?
+    if @tracks.is_a? Hash
+      t = @tracks
+    else 
+      @playlist_pos -= 1
+      @playlist_pos += @tracks.size if @playlist_pos < 0
+      t = @tracks[@playlist_pos]
+      changed
+      notify_observers :state => :previous, :position => @playlist_pos
+    end
+    t
+  end
+
+  def download(target_dir)
+    return @error unless @tracks
+    return if @tracks.empty?
+    if @tracks.is_a? Hash
+      t = @tracks
+    else 
+      t = @tracks[@playlist_pos]
+    end
+    unless t["download"].nil? || t["download"].size == 0
+      filename = "#{t["permalink"]}.#{t["original_format"]}"
+      path = File.join(target_dir, filename)
+      pair = [path, t['download']]
+      @download_queue << pair unless @download_queue.include? pair
+      @dthread.run
+
+      changed
+      notify_observers :state => :download, :count => @download_queue.size
+    else
+      changed
+      notify_observers :state => :download, :error => "Not downloadable"
+    end
+  end
+
+  # download thread
+  def downloader
+    loop do
+      size = @download_queue.size
+      while d = @download_queue.shift
+        path = d[0]
+        uri = d[1]
+        changed
+        notify_observers :state => :download, :name => path, :count => size
+        size = @download_queue.size
+        begin
+          path = File.expand_path path
+          file = File.new(path, "wb")
+          File.open(path, "wb") do |file|
+            file.print open(uri).read
+          end
+          changed
+          notify_observers :state => :download, :name => path, :count => size
+        rescue OpenURI::HTTPError => e
+          changed
+          notify_observers :state => :error, :error => e
+        ensure
+          file.close
+        end
+      end
+      sleep 5
+    end
+  rescue => e
+    changed
+    notify_observers :state => "error", :error => e
+  end
+
+  private
+
+  def client_url(url)
+    "#{url}?client_id=%s" % [@cid] if url
+  end
+end
+