keymapparser.py

   1 import xml.dom.minidom
   2 import enigma
   3
   4 from keyids import KEYIDS;
   5
   6 # these are only informational (for help)...
   7 from Tools.KeyBindings import addKeyBinding
   8
   9 def readKeymap():
  10
  11         p = enigma.eActionMapPtr()
  12         enigma.eActionMap.getInstance(p)
  13         assert p
  14
  15         filename1 = "data/keymap.xml"
  16         filename2 = "/usr/share/enigma2/keymap.xml"
  17
  18         try:
  19                 source = open(filename1)
  20                 filename = filename1
  21         except:
  22                 source = open(filename2)
  23                 filename = filename2
  24 #               raise "couldn't open keymap.xml!"
  25
  26         try:
  27                 dom = xml.dom.minidom.parse(source)
  28         except:
  29                 raise "keymap not well-formed."
  30
  31         try:
  32                 keymap = dom.getElementsByTagName("keymap")[0]
  33         except:
  34                 raise "no keymap defined."
  35
  36         maps = keymap.getElementsByTagName("map")
  37
  38         for cmap in maps:
  39                 context = str(cmap.getAttribute("context"))
  40                 assert context != "", "map must have context"
  41
  42                 def parseKeys(device, keys):
  43                         for x in keys.getElementsByTagName("key"):
  44                                 mapto = str(x.getAttribute("mapto"))
  45                                 id = x.getAttribute("id")
  46                                 flags = x.getAttribute("flags")
  47
  48                                 flag_ascii_to_id = lambda x: {'m':1,'b':2,'r':4}[x]
  49
  50 #                               try:
  51                                 flags = sum(map(flag_ascii_to_id, flags))
  52 #                               print "-> " + str(flags)
  53 #                               except:
  54 #                                       raise str("%s: illegal flags '%s' specificed in context %s, id '%s'" % (filename, flags, context, id))
  55
  56                                 assert mapto != "", "%s: must specify mapto in context %s, id '%s'" % (filename, context, id)
  57                                 assert id != "", "%s: must specify id in context %s, mapto '%s'" % (filename, context, mapto)
  58                                 assert flags != 0, "%s: must specify at least one flag in context %s, id '%s'" % (filename, context, id)
  59
  60                                 if len(id) == 1:
  61                                         keyid = ord(id) | 0x8000
  62                                 elif id[0] == '\\':
  63                                         if id[1] == 'x':
  64                                                 keyid = int(id[2:], 0x10) | 0x8000
  65                                         elif id[1] == 'd':
  66                                                 keyid = int(id[2:]) | 0x8000
  67                                         else:
  68                                                 raise "key id '" + str(id) + "' is neither hex nor dec"
  69                                 else:
  70                                         try:
  71                                                 keyid = KEYIDS[id]
  72                                         except:
  73                                                 raise "key id '" + str(id) + "' is illegal"
  74
  75 #                               print context + "::" + mapto + " -> " + device + "." + hex(keyid)
  76                                 p.bindKey(device, keyid, flags, context, mapto)
  77                                 addKeyBinding(keyid, context, mapto)
  78
  79                 parseKeys("generic", cmap)
  80
  81                 for device in cmap.getElementsByTagName("device"):
  82                         parseKeys(str(device.getAttribute("name")), device)
  83