libpurple/dbus-analyze-signals.py

   1 # This program takes a C source as the input and produces the list of
   2 # all signals registered.
   3 #
   4 # Output is:
   5 #   <signal name="Changed">
   6 #       <arg name="new_value" type="b"/>
   7 #   </signal>
   8 from __future__ import print_function
   9 import re
  10 import sys
  11
  12 # List "excluded" contains signals that shouldn't be exported via
  13 # DBus.  If you remove a signal from this list, please make sure
  14 # that it does not break "make" with the configure option
  15 # "--enable-dbus" turned on.
  16
  17 excluded = [\
  18     # purple_dbus_signal_emit_purple prevents our "dbus-method-called"
  19     # signal from being propagated to dbus.
  20         "dbus-method-called",
  21     ]
  22
  23 registerregex = re.compile("purple_signal_register[^;]+\"([\w\-]+)\"[^;]+(purple_marshal_\w+)[^;]+;")
  24 nameregex = re.compile('[-_][a-z]')
  25
  26 print("/* Generated by %s.  Do not edit! */" % sys.argv[0])
  27 print("const char *dbus_signals = ")
  28 for match in registerregex.finditer(sys.stdin.read()):
  29     signal = match.group(1)
  30     marshal = match.group(2)
  31     if signal in excluded:
  32         continue
  33
  34     signal = nameregex.sub(lambda x:x.group()[1].upper(), '-'+signal)
  35     print("\"    <signal name='%s'>\\n\"" % signal)
  36
  37     args = marshal.split('_')
  38     # ['purple', 'marshal', <return type>, '', args...]
  39     if len(args) > 4:
  40         for arg in args[4:]:
  41             if arg == "POINTER":
  42                 type = 'p'
  43             elif arg == "ENUM":
  44                 type = 'i'
  45             elif arg == "INT":
  46                 type = 'i'
  47             elif arg == "UINT":
  48                 type = 'u'
  49             elif arg == "INT64":
  50                 type = 'x'
  51             elif arg == "UINT64":
  52                 type = 't'
  53             elif arg == "BOOLEAN":
  54                 type = 'b'
  55             print("\"      <arg type='%s'/>\\n\"" % type)
  56
  57     print("\"    </signal>\\n\"")
  58
  59 print(";")
  60