keymapparser.py

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