keymapparser.py

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