my (%foos, %bars);
while( my $line = <DATA> ) {
  chomp $line;
  if ( $line =~ /^foo ([^:]*):([^:]*)$/ ) {
    push( @{ $foos{ $1 } }, $2 );
  } elsif ( $line =~ /^bar ([^:]*):([^:]*)$/ ) {
    push( @{ $bars{ $1 } }, $2 );
  } else {
#    warn qq( "$line" is the wrong format.\n );
  }
}