# If 'include' variable is true, print subset of file with timestamp between 
# startSec and endSec. If 'include' variable is false, print subset of file
# with timestamp NOT within startSec and endSec.
# timeStamp is in first column
# Presumes that file timestamps are sorted in increasing order.
BEGIN {
    if (ARGC < 3) {
	print "usage: startSec endSec timestamp-file";
	exit;
    }

    ### Set include=1 to INCLUDE only time-window data; set include=0 to 
    ### EXCLUDE time-window data
    include = 0;

    startSec = ARGV[1];
    ARGV[1] = "";
    endSec = ARGV[2];
    ARGV[2] = "";

    if (endSec <= startSec) {
	printf "endSec must be greater than startSec\n";
	exit;
    }
}

NF == 0 { next; }
/^#/ { next; }

{
    if (include) {
	if ($1 >= startSec && $1 < endSec) {
	    print;
	}
    }
    else {
	if ($1 >= startSec && $1 < endSec) {
	    next;
	}
	print;
    }

    if ($1 > endSec) {
	// All done
	exit;
    }
}


END {
    
}