Author: duncan
Date: Thu Feb 1 21:31:34 2007
New Revision: 9124
Added:
branches/rel-1/freevo/src/pylcd.py
Log:
Added pylcd, hopefully in the correct place
Added: branches/rel-1/freevo/src/pylcd.py
==============================================================================
--- (empty file)
+++ branches/rel-1/freevo/src/pylcd.py Thu Feb 1 21:31:34 2007
@@ -0,0 +1,201 @@
+# Copyright (C) 2002 Tobias Klausmann
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+# By reading this code you agree not to ridicule the author =)
+
+import string
+
+__version__="0.2"
+__author__="[EMAIL PROTECTED]"
+__doc__="""PyLCD v%s (c) 2002, 2003 Tobias Klausman
+
+PyLCD is a Library that interfaces with the LCDproc daemon. It abstracts the
+network connection handling and provides a remap function for special
+characters.
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+Place, Suite 330, Boston, MA 02111-1307, USA.
+
+Please e-mail bugs to: %s""" % (__version__, __author__)
+
+class client:
+ """
+ This class opens a connection to the LCD deamon
+ on the specified host and encapsulates all the
+ functions of the LCDd protocol.
+ """
+ def __init__(self,host="localhost",port=13666):
+ """
+ Connect to the LCD daemon. Do *not* send
+ "hello" (connect() is used for that).
+ """
+ from telnetlib import Telnet
+ self.conn=Telnet(host,port)
+ # Various vars that need to be initialized
+ self.state="unconnected"
+ self.server="unknown"
+ self.s_version="unknown"
+ self.proto="unknown"
+ self.type="unknown"
+ self.d_width=0
+ self.d_height=0
+ self.c_width=0
+ self.c_height=0
+
+ # A translation table
+ # FIXME: LCDd does char translation since 0.4.3,
+ # this probably should be detected and stuff
+
self.transtable=string.maketrans("����������������������������������������������������������\\","�AAAAAEEEEIIIIDNOOOOxOUUUYaaaaaceeeeiiiinooooouuu\341\341\341\357\365\342\341\357\365\315")
+
+ self.deltable=""
+ for i in range(160,181):
+ self.deltable=self.deltable+chr(i)
+
+ for i in range(182,192):
+ self.deltable=self.deltable+chr(i)
+
+ for i in (222,240,247,254,255):
+ self.deltable=self.deltable+chr(i)
+
+
+ def send(self,cmd):
+ """
+ Send "cmd" plus a linefeed to the server.
+ """
+ try:
+ self.conn.write(cmd+"\n")
+ except:
+ print 'self.conn.write(%s+"\n") failed' % (cmd)
+
+ def read(self):
+ """
+ Read very eagerly, but not necessarily a whole line.
+ Return read data.
+ """
+ return self.conn.read_very_eager()
+
+ def readl(self):
+ """
+ Read and return a whole line. May block.
+ """
+ try:
+ return self.conn.read_until("\n")
+ except:
+ print 'self.conn.read_until("\n") failed'
+ return None
+
+ def connect(self):
+ """
+ Send connect message ("hello") to server and
+ return connection message. Also set internal
+ variables that can be read via getinfo().
+ """
+ self.send("hello")
+ line=string.strip(self.readl())
+
+ try:
+
(self.state,self.server,self.s_version,c,self.proto,self.type,c,self.ds_width,c,self.ds_height,c,self.cs_width,c,self.cs_height)=string.split(line,"
")
+ except ValueError:
+ self.ds_width="0"
+ self.ds_height="0"
+ self.cs_width="0"
+ self.cs_height="0"
+
+ self.d_width=int(self.ds_width)
+ self.d_height=int(self.ds_height)
+ self.c_width=int(self.cs_width)
+ self.c_height=int(self.cs_height)
+
+ line=line+self.read()
+
+ return (line)
+
+ def getinfo(self):
+ """
+ Print information gathered during connect().
+ """
+ print "Connection state:", self.state
+ print "Server type:", self.server
+ print "Server version: ", self.s_version
+ print "Protocol version:", self.proto
+ print "LCD type:", self.type
+ print "Display size: %sx%s
(%s)"%(self.d_width,self.d_height,self.d_width*self.d_height)
+ print "Cell size: %sx%s
(%s)"%(self.c_width,self.c_height,self.c_width*self.c_height)
+
+ def client_set(self,id):
+ """
+ Implement the client_set command, return server answer
+ """
+ self.send("client_set %s"%id)
+ return self.readl()
+
+ def screen_add(self,id):
+ """
+ Implement the screen_add command, return server answer
+ """
+
+ self.send("screen_add %s"%id)
+ return self.readl()
+
+ def screen_del(self,id):
+ """
+ Implement the screen_del command, return server answer
+ """
+ self.send("screen_del %s"%id)
+ return self.readl()
+
+ def screen_set(self,id,params):
+ """
+ Implement the screen_set command, return server answer
+ """
+ self.send("screen_set %s %s"%(id,params))
+ return self.readl()
+
+ def widget_add(self,id,type,params=""):
+ """
+ Implement the widget_add command, return server answer
+ """
+ self.send("widget_add %s %s %s"%(id,type,params))
+ return self.readl()
+
+ def widget_set(self,screen,id,data):
+ """
+ Implement the widget_set command, return server answer
+ """
+ self.send("widget_set %s %s %s"%(screen,id,data))
+ return self.readl()
+
+ def remap(self,str):
+ """
+ Maps high-bit ascii charactes which often produce kanjii
+ on HD44780 displays to approximations. Returns string
+ with fixed characters.
+ This one is specially tailored to HD44780 displays. Later
+ versions (>=0.4.3) of LCDd do this by themselves.
+ """
+ ret=string.translate(str,self.transtable,self.deltable)
+ return(ret)
+
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