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