Rename library to libmpd for now...

1 files changed, 152 insertions, 0 deletions

diff --git a/libmpd.rb b/libmpd.rb
new file mode 100644
index 0000000..6b9ac69
--- /dev/null
+++ b/libmpd.rb
@@ -0,0 +1,152 @@
+#!/usr/bin/env ruby
+#
+# Copyright 2009 David Vazgenovich Shakaryan <dvshakaryan@gmail.com>
+# Distributed under the terms of the GNU General Public License v3.
+# See http://www.gnu.org/licenses/gpl.txt for the full license text.
+
+require 'socket'
+
+class MPD
+  # Initialise an MPD object with the specified host and port.
+  #
+  # The default host is "localhost" and the default port is 6600.
+  def initialize host='localhost', port=6600
+    @host = host
+    @port = port
+  end
+
+  # Connect to the server.
+  def connect
+    # Connect to MPD and return response.
+    @socket = TCPSocket.new @host, @port
+    return @socket.gets.chomp
+  end
+
+  def send_request command
+    # Escape backslashes in command.
+    @socket.puts command.gsub('\\', '\\\\\\')
+    return get_response
+  end
+
+  def get_response
+    response = String.new
+
+    while true
+      line = @socket.gets
+
+      break if line == "OK\n"
+      return false if line =~ /^ACK/
+
+      response << line
+    end
+
+    return true if response.empty?
+    return response
+  end
+
+  def generate_hash str
+    hash = Hash.new
+
+    str.split("\n").each do |line|
+      field, value = line.split(': ')
+      hash[field.downcase.to_sym] = value
+    end
+
+    return hash
+  end
+
+  # Returns a Hash containing information about the current song.
+  def currentsong
+    return generate_hash send_request 'currentsong'
+  end
+
+  # Returns a Hash containing the current status.
+  def status
+    return generate_hash send_request 'status'
+  end
+
+  # Returns a Hash containing statistics.
+  def stats
+    return generate_hash send_request 'stats'
+  end
+
+  # Begins playing the playlist. If argument is supplied, begin at specified
+  # position.
+  def play songpos=false
+    command = 'play'
+    command << ' ' + songpos.to_s if songpos
+
+    return send_request command
+  end
+
+  # Toggles pause. (1 = pause, 0 = play)
+  def pause pause
+    return send_request 'pause ' + pause.to_s
+  end
+
+  # Stops playing.
+  def stop
+    return send_request 'stop'
+  end
+
+  # Plays next song in the playlist.
+  def next
+    return send_request 'next'
+  end
+
+  # Plays previous song in the playlist.
+  def previous
+    return send_request 'previous'
+  end
+
+  # Seeks to the given position of the given song.
+  def seek songpos, time
+    return send_request 'seek %s %s' % [songpos, time]
+  end
+
+  # Adds the specified file to the playlist. (Directories add recursively.)
+  def add uri
+    return send_request 'add "%s"' % uri
+  end
+
+  # Deletes a song from the playlist.
+  def delete songpos
+    return send_request 'delete ' + songpos.to_s
+  end
+
+  # Clears the playlist.
+  def clear
+    return send_request 'clear'
+  end
+
+  def split_and_hash str
+    songs = str.split(/(?!\n)(?=file:)/).map do |song|
+      generate_hash song
+    end
+
+    return songs
+  end
+
+  # Returns an Array composed of Hashes containing information about the songs
+  # in the playlist.
+  #
+  # Not yet complete.
+  def playlistinfo
+    return split_and_hash send_request 'playlistinfo'
+  end
+
+  # Find all songs in database with an exact match.
+  def find type, what
+    return split_and_hash send_request 'find %s "%s"' % [type, what]
+  end
+
+  # Searches the database.
+  def search type, what
+    return split_and_hash send_request 'search %s "%s"' % [type, what]
+  end
+
+  private :generate_hash
+  private :get_response
+  private :send_request
+  private :split_and_hash
+end