#!python
"""
Convert a GFA file to the other specification version
"""

import sys
import os
import gfapy
import argparse

op = argparse.ArgumentParser(description=__doc__)
op.add_argument("filename")
op.add_argument('--version', action='version', version='%(prog)s 1.0')
opts = op.parse_args()

gfa = gfapy.Gfa.from_file(opts.filename)
try:
  if gfa.version == "gfa1":
    print(str(gfa.to_gfa2()))
  else:
    print(str(gfa.to_gfa1()))
except gfapy.Error as err:
  sys.stderr.write(str(err))
  sys.exit(1)

