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class DummyFile:
	def __init__(self, text):
		self.text = text
	def write(self, text):
		self.text += text
		
	def read(self):
		return self.text
	
	def readlines(self):
		return self.text.splitlines()
	
	

class open:
	def __init__(self, arg, user=None, pwd=None):
		
		self.text = ""
		
		port = None
		if "://" in arg:
			proto, rest = arg.split("://", 1)
			machine, path = rest.split("/", 1)
			if ":" in path:
				z = path.split(":")
				port = z[-1] 
				path = ":".join(z[:-1])
		else:
			proto = "file"
			path = rest
		
		z = path.split("/")
		file = z[-1]
		path = "/".join(z[:-1])
		print [proto, machine, path, file, port]

		
		
		if proto == "file":#==============================FILE
			f = file(path + file)
			def read():
				return f.read()
			def save():
				f.close()
				f = file(path + file)
			def close():
				f.close()
	
		elif proto == "ftp":#=============================FTP
			from ftblib import FTP
			f.cwd(path)
			f = FTP(machine)	
			if user and pwd:
				f.login(user, pwd)
			def read():
				 f.retrbinary("RETR " + file, lambda(text): text)
				 return text
			
			def save():
				f.storbinary(path + file, DummyFile(self.text)) #oder doch 'storlines'?
				return DummyFile.read()
			def close():
				f.close()
			
		
		elif proto == "http":#============================HTTP
			from urllib import urlopen
			def read():
				f = urlopen(arg)
				return f.read()
			def close():
				f.close()
			
			def save():
				raise kaWas, "save not supported for HTTP"#ok, es gibt ne HTTP-put methode aber....
		
		self.save = save
		self.read = read
		self.close = close
		
	def __del__(self):
		self.close()
		
			
		
f = open("http://www.google.de/test/foo.html")
print f.read()