libpurple/dbus-analyze-types.py

   1 # This program takes a C header/source as the input and produces
   2 #
   3 # with --keyword=enum: the list of all enums
   4 # with --keyword=struct: the list of all structs
   5 #
   6 # the output styles:
   7 #
   8 # --enum    DBUS_POINTER_NAME1,
   9 #           DBUS_POINTER_NAME2,
  10 #           DBUS_POINTER_NAME3,
  11 #
  12 # --list    NAME1
  13 #           NAME2
  14 #           NAME3
  15 #
  16
  17 from __future__ import absolute_import, division, print_function
  18
  19 import argparse
  20 import fileinput
  21 import re
  22 import sys
  23
  24
  25 def toprint(match, line):
  26     if args.verbatim:
  27         return line
  28     else:
  29         return args.pattern % match
  30
  31
  32 parser = argparse.ArgumentParser()
  33 parser.add_argument('input', nargs='*',
  34                     help='Input files (or stdin if not specified)')
  35 parser.add_argument('-o', '--output', type=argparse.FileType('w'),
  36                     help='Output to file instead of stdout')
  37 parser.add_argument('--keyword', default='struct',
  38                     help='What keyword to search')
  39 parser.add_argument('--pattern', default='%s',
  40                     help='String pattern used to print matches')
  41 parser.add_argument('--verbatim', action='store_true',
  42                     help='Return full line of match instead of match itself')
  43 args = parser.parse_args()
  44
  45 structregexp1 = re.compile(
  46     r"^(typedef\s+)?%s\s+\w+\s+(\w+)\s*;" % (args.keyword, ))
  47 structregexp2 = re.compile(r"^(typedef\s+)?%s" % (args.keyword, ))
  48 structregexp3 = re.compile(r"^}\s+(\w+)\s*;")
  49
  50 print("/* Generated by %s.  Do not edit! */" % (sys.argv[0], ),
  51       file=args.output)
  52
  53 myinput = fileinput.input(args.input)
  54
  55 for line in myinput:
  56     match = structregexp1.match(line)
  57     if match is not None:
  58         print(toprint(match.group(2), line), file=args.output)
  59         continue
  60
  61     match = structregexp2.match(line)
  62     if match is not None:
  63         while True:
  64             if args.verbatim:
  65                 print(line.rstrip(), file=args.output)
  66             line = next(myinput)
  67             match = structregexp3.match(line)
  68             if match is not None:
  69                 print(toprint(match.group(1), line), file=args.output)
  70                 break
  71             if line[0] not in " \t{\n":
  72                 if args.verbatim:
  73                     print(line, file=args.output)
  74                 break