import argparse

# A simple command line app that reads from standard input and writes to standard output
# Arguments:
#    --input_format=fdb/mars
#    --output_format=text/html
import sys


def main():
    parser = argparse.ArgumentParser(description="Generate a compressed tree from various inputs.")
    
    parser.add_argument(
        "--input_format",
        choices=["fdb", "mars"],
        default="fdb",
        help="Specify the input format (fdb list or mars)."
    )
    
    parser.add_argument(
        "--output_format",
        choices=["text", "html"],
        default="text",
        help="Specify the output format (text or html)."
    )
    
    args = parser.parse_args()
    
    # Read from standard input
    l = 0
    for line in sys.stdin.readlines():
        l += 1
        
    
    # Process data (For now, just echoing the input)
    output_data = f"[Input Format: {args.input_format}] [Output Format: {args.output_format}]\n{l} lines read from standard input\n"
    
    # Write to standard output
    sys.stdout.write(output_data)

if __name__ == "__main__":
    main()