keymapparser.py

   1 import xml.dom.minidom
   2 import enigma
   3 from Tools.XMLTools import elementsWithTag
   4
   5 from keyids import KEYIDS;
   6
   7 # these are only informational (for help)...
   8 from Tools.KeyBindings import addKeyBinding
   9
  10 def readKeymap(filename = "/usr/share/enigma2/keymap.xml"):
  11
  12         p = enigma.eActionMap.getInstance()
  13         assert p
  14
  15         source = open(filename)
  16
  17         try:
  18                 dom = xml.dom.minidom.parse(source)
  19         except:
  20                 raise "keymap %s not well-formed." % filename
  21
  22         keymap = dom.childNodes[0]
  23
  24         maps = elementsWithTag(keymap.childNodes, "map")
  25
  26         for cmap in maps:
  27                 context = str(cmap.getAttribute("context"))
  28                 assert context != "", "map must have context"
  29
  30                 def parseKeys(device, keys):
  31                         for x in elementsWithTag(keys.childNodes, "key"):
  32                                 mapto = str(x.getAttribute("mapto"))
  33                                 id = x.getAttribute("id")
  34                                 flags = x.getAttribute("flags")
  35
  36                                 flag_ascii_to_id = lambda x: {'m':1,'b':2,'r':4,'l':8}[x]
  37
  38 #                               try:
  39                                 flags = sum(map(flag_ascii_to_id, flags))
  40 #                               print "-> " + str(flags)
  41 #                               except:
  42 #                                       raise str("%s: illegal flags '%s' specificed in context %s, id '%s'" % (filename, flags, context, id))
  43
  44                                 assert mapto != "", "%s: must specify mapto in context %s, id '%s'" % (filename, context, id)
  45                                 assert id != "", "%s: must specify id in context %s, mapto '%s'" % (filename, context, mapto)
  46                                 assert flags != 0, "%s: must specify at least one flag in context %s, id '%s'" % (filename, context, id)
  47
  48                                 if len(id) == 1:
  49                                         keyid = ord(id) | 0x8000
  50                                 elif id[0] == '\\':
  51                                         if id[1] == 'x':
  52                                                 keyid = int(id[2:], 0x10) | 0x8000
  53                                         elif id[1] == 'd':
  54                                                 keyid = int(id[2:]) | 0x8000
  55                                         else:
  56                                                 raise "key id '" + str(id) + "' is neither hex nor dec"
  57                                 else:
  58                                         try:
  59                                                 keyid = KEYIDS[id]
  60                                         except:
  61                                                 raise "key id '" + str(id) + "' is illegal"
  62
  63 #                               print context + "::" + mapto + " -> " + device + "." + hex(keyid)
  64                                 p.bindKey(filename, device, keyid, flags, context, mapto)
  65                                 addKeyBinding(filename, keyid, context, mapto)
  66
  67                 parseKeys("generic", cmap)
  68
  69                 for device in elementsWithTag(cmap.childNodes, "device"):
  70                         parseKeys(str(device.getAttribute("name")), device)
  71
  72 def removeKeymap(filename):
  73         p = enigma.eActionMap.getInstance()
  74         p.unbindKeyDomain(filename)