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