stdio-common/tst-errno-manual.py

   1 #!/usr/bin/python3
   2 # Check is all errno definitions at errlist.h documented in the manual.
   3 # Copyright (C) 2020-2022 Free Software Foundation, Inc.
   4 # This file is part of the GNU C Library.
   5 #
   6 # The GNU C Library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Lesser General Public
   8 # License as published by the Free Software Foundation; either
   9 # version 2.1 of the License, or (at your option) any later version.
  10 #
  11 # The GNU C Library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Lesser General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU Lesser General Public
  17 # License along with the GNU C Library; if not, see
  18 # <https://www.gnu.org/licenses/>.
  19
  20 import argparse
  21 import sys
  22 import re
  23
  24 RE_MANUAL = re.compile(
  25     r'(?:^@errno){(\w+)')
  26
  27 RE_ERRLIST = re.compile(
  28     r'\(E[a-zA-Z0-9]+\)')
  29
  30 PASS=0
  31 FAIL=1
  32
  33 # Each manual entry is in the form:
  34 #
  35 #  errno{EAGAIN, 35, Resource temporarily unavailable}
  36 def parse_manual(f):
  37     errlist = [RE_MANUAL.findall(s) for s in f]
  38     return map(lambda x : x[0], filter(None, errlist))
  39
  40 # Each errlist entry is in the form:
  41 #
  42 #  _S(ERR_MAP(EAGAIN), N_("Resource temporarily unavailable"))
  43 def parse_errlist(f):
  44     errlist = [RE_ERRLIST.findall(s) for s in f]
  45     # Each element is '[]' or '['(EAGAIN)']'
  46     return map(lambda s : s[0][s[0].find('(')+1:s[0].find(')')],
  47                filter(None, errlist))
  48
  49 def check_errno_definitions(manual_fname, errlist_fname):
  50     with open(manual_fname, 'r') as mfile, open(errlist_fname, 'r') as efile:
  51         merr = parse_manual(mfile)
  52         eerr = parse_errlist(efile)
  53         diff = set(eerr).difference(merr)
  54         if not diff:
  55             sys.exit(PASS)
  56         else:
  57             print("Failure: the following value(s) are not in manual:",
  58                   ", ".join(str(e) for e in diff))
  59             sys.exit(FAIL)
  60
  61 def main():
  62     parser = argparse.ArgumentParser(description='Generate errlist.h')
  63     parser.add_argument('-m', dest='manual', metavar='FILE',
  64                         help='manual errno texi file')
  65     parser.add_argument('-e', dest='errlist', metavar='FILE',
  66                         help='errlist with errno definitions')
  67     args = parser.parse_args()
  68
  69     check_errno_definitions(args.manual, args.errlist)
  70
  71
  72 if __name__ == '__main__':
  73     main()