interpretor/libsndfile-1.0.25/src/binheader_writef_check.py

   1 #!/usr/bin/python
   2
   3 # Copyright (C) 2006-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
   4 #
   5 # All rights reserved.
   6 #
   7 # Redistribution and use in source and binary forms, with or without
   8 # modification, are permitted provided that the following conditions are
   9 # met:
  10 #
  11 #     * Redistributions of source code must retain the above copyright
  12 #       notice, this list of conditions and the following disclaimer.
  13 #     * Redistributions in binary form must reproduce the above copyright
  14 #       notice, this list of conditions and the following disclaimer in
  15 #       the documentation and/or other materials provided with the
  16 #       distribution.
  17 #     * Neither the author nor the names of any contributors may be used
  18 #       to endorse or promote products derived from this software without
  19 #       specific prior written permission.
  20 #
  21 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  23 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  25 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  26 # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  27 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  28 # OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  29 # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  30 # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  31 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32
  33
  34 # This parses C code using regexes (yes, thats horrible) and makes sure
  35 # that calling conventions to the function psf_binheader_writef are
  36 # correct.
  37
  38
  39
  40 import re, string, sys
  41
  42 _whitespace_re = re.compile ("\s+", re.MULTILINE)
  43
  44 def find_binheader_writefs (data):
  45         lst = re.findall ('psf_binheader_writef\s*\(\s*[a-zA-Z_]+\s*,\s*\"[^;]+;', data, re.MULTILINE)
  46         return [_whitespace_re.sub (" ", x) for x in lst]
  47
  48 def find_format_string (s):
  49         fmt = re.search ('"([^"]+)"', s)
  50         if not fmt:
  51                 print "Bad format in :\n\n\t%s\n\n" % s
  52                 sys.exit (1)
  53         fmt = fmt.groups ()
  54         if len (fmt) != 1:
  55                 print "Bad format in :\n\n\t%s\n\n" % s
  56                 sys.exit (1)
  57         return _whitespace_re.sub ("", fmt [0])
  58
  59 def get_param_list (data):
  60         dlist = re.search ("\((.+)\)\s*;", data)
  61         dlist = dlist.groups ()[0]
  62         dlist = string.split (dlist, ",")
  63         dlist = [string.strip (x) for x in dlist]
  64         return dlist [2:]
  65
  66 def handle_file (fname):
  67         errors = 0
  68         data = open (fname, "r").read ()
  69
  70         writefs = find_binheader_writefs (data)
  71         for item in writefs:
  72                 fmt = find_format_string (item)
  73                 params = get_param_list (item)
  74                 param_index = 0
  75
  76                 # print item
  77
  78                 for ch in fmt:
  79                         if ch in 'Eet ':
  80                                 continue
  81
  82                         # print "    param [%d] %c : %s" % (param_index, ch, params [param_index])
  83
  84                         if ch != 'b':
  85                                 param_index += 1
  86                                 continue
  87
  88                         # print item
  89                         # print "    param [%d] %c : %s <-> %s" % (param_index, ch, params [param_index], params [param_index + 1])
  90
  91                         if string.find (params [param_index + 1], "sizeof") < 0 \
  92                                                 and string.find (params [param_index + 1], "make_size_t") < 0 \
  93                                                 and string.find (params [param_index + 1], "strlen") < 0:
  94                                 if errors == 0: print
  95                                 print "\n%s :" % fname
  96                                 print "    param [%d] %c : %s <-> %s" % (param_index, ch, params [param_index], params [param_index + 1])
  97                                 print "    %s" % item
  98                                 errors += 1
  99                         param_index += 2
 100
 101         return errors
 102
 103 #===============================================================================
 104
 105 if len (sys.argv) > 1:
 106         print "\n    binheader_writef_check                   :",
 107         sys.stdout.flush ()
 108         errors = 0
 109         for fname in sys.argv [1:]:
 110                 errors += handle_file (fname)
 111         if errors > 0:
 112                 print "\nErrors : %d\n" % errors
 113                 sys.exit (1)
 114
 115 print "ok\n"
 116