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#!/usr/bin/perl

$debug = 0;
system("mkdir -p NEW DIFF");

if(@ARGV == 1) {
  open(TESTLIST, "TESTLIST") || die "can not open TESTLIST: $!\n";
  $wanted = $ARGV[0];
  #print "Searching for test case $wanted\n";
  while(<TESTLIST>) {
    #print "Processing $_\n";
    next unless (/^$wanted/);

    chop;
    ($name,$input,$output,$options)=split(/\s+/,$_, 4);
    last;
  }
  close(TESTLIST);

  die "Can not find test $wanted\n" unless defined($input);

} elsif(@ARGV == 4) {
  $name=$ARGV[0];
  $input=$ARGV[1];
  $output=$ARGV[2];
  $options=$ARGV[3];
} else {
  print "Usage: TESTonce name [input output options]\n";
  exit 20;
}

print "Running $name. \n" if $debug;
print "   Input: $input, OUTPUT: $output, OPTIONS: $options\n" if $debug;

print "    ";
exec("../tcpdump 2>/dev/null -n -r $input $options | tee NEW/$output | diff -w - $output >DIFF/$output.diff");
@cores = glob("core*");
exit 10 if (@cores > 0);
exit 0;