#!/usr/bin/env python3

import os
import re
import sys

warnings = 'dialyzer_warnings'
count = 0
checked = 0

if not os.path.isfile(warnings):
   print('%s: file %s does not exist, exiting' % (sys.argv[0], warnings))
   exit(0)

with open('known_dialyzer_warnings') as kw:
   known = [line for line in [line.strip() for line in kw.readlines()] if line]

try:
   with open(warnings) as dw:
      for warn in dw:
         warn = warn.strip()
         if not warn:
            continue
         matched = None
         if known:
            pat = known.pop(0)
            matched = re.match(pat, warn)
         if not matched:
            print(warn)
            count += 1
         checked += 1
except Exception as e:
    print('%s: unexpected error: %s' % (sys.argv[0], str(e)), file=sys.stderr)
finally:
   if checked and count == 0:
      os.remove(warnings)

exit(count)