#!/lustre/sw/miniconda3/bin/python3
'''Detect bad diffs between warc.sh log file and existing extract_...tar
Usage: nogood.py segid numChanged
Note the slightly counter-intuitive value: 0 if the input is no good'''
import sys,re
LONG_ADD=re.compile('[1-9][0-9]*a[1-9][0-9]*,[1-9][0-9]*')
(segment,n)=map(int,sys.argv[1:])
c=0
for l in sys.stdin:
    (i,d)=l.rstrip().split(':')
    if LONG_ADD.fullmatch(d):
        c+=1
        continue
    else:
        print("non-simple diff at %s: %s for segment %s"%(i,d,segment),file=sys.stderr)
        exit(0)
if c!=n:
    print("too many diffs? (%s<>%s) for segment %s"%(c,n,segment),file=sys.stderr)
    exit(0)
exit(1)