From 5ba42fb745f89d82ee62466ea141aa3056e165aa Mon Sep 17 00:00:00 2001
From: trollhase <valentingehrke@gmx.de>
Date: Thu, 24 Oct 2013 13:32:17 +0200
Subject: [PATCH] MPD Database Reader + Connection

---
 mpddbreader.py | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 mpddbreader.py

diff --git a/mpddbreader.py b/mpddbreader.py
new file mode 100644
index 0000000..c0c56ca
--- /dev/null
+++ b/mpddbreader.py
@@ -0,0 +1,81 @@
+import socket
+
+class LineReader(object):
+	def __init__(self, source):
+		self.source = source
+		self.buffer = ""
+
+	def read(self,bufsize=1024):
+		while not "\n" in self.buffer:
+			data = self.source.recv(bufsize)
+			if len(data) == 0:
+				return None
+			self.buffer += data
+
+		pos = self.buffer.pos("\n")
+		line, self.buffer = self.buffer[:pos], self.buffer[pos+1:]
+		return line
+
+	def clear(self):
+		self.buffer = ""
+
+class HashListCommandReader(object):
+	def run(self, linereader, endline="OK", errorline="ACK"):
+		data = {}
+		line = linereader.read()
+		while line is not None and line != endline and line != errorline:
+			if not ":" in line:
+				continue
+			arr = line.split(":",1)
+			key, value = arr[0].strip().lower(), arr[1].strip()
+			if key in data:
+				yield data
+				data = {}
+			data[key] = value
+			line = linereader.read()
+
+class MPDConnection(object):
+	def __init__(self, host=None):
+		self.socket = None
+		self.linereader = None
+		if host is not None:
+			self.connect(host)
+
+	def connect(self,host):
+		if self.socket is not None:
+			return
+		self.socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
+		self.socket.connect(host)
+
+		self.linereader = LineReader(self.socket)
+
+		#Initialize connection
+		line = self.linereader.read()
+
+		if line[:7] != "OK MPD ":
+			self.close()
+			raise Exception("Not an mpd server")
+
+	def close(self):
+		try:
+			self.socket.close()
+		finally:
+			self.socket = None
+			self.linereader = None
+
+	def run(self,command,reader):
+		self.socket.send(str(command)+"\n")
+		self.linereader.clear()
+		return reader.run(self.linereader)
+
+if __name__ == '__main__':
+	try:
+		c = MPDConnection(('10.0.0.1',6600))
+		for song in c.run("listallinfo",HashListCommandReader()):
+			artist = song['artist'] if 'artist' in song else "Unknown"
+			title = song['title'] if 'title' in song else "Unknown"
+			print "%s - %s" % (artist,song)
+	finally:
+		c.close()
+		print "Terminated."
+