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#!/usr/bin/env python3
import argparse
import juliandate as jd
def convert(j, args):
d = int(j + 0.5) if args.round else j
c = jd.to_julian(d) if args.julian else jd.to_gregorian(d)
if args.tabs:
return "\t".join([str(x) for x in c])
return ", ".join([str(x) for x in c])
def main():
parser = argparse.ArgumentParser(description="Convert Julian Days to calendar days")
parser.add_argument("jds", metavar='J', type=float, nargs='*',
help="Julian days to convert")
parser.add_argument("-f", "--file", type=argparse.FileType('r'),
help="Read from file or stdin ('-')")
parser.add_argument("-j", "--julian", action="store_true",
help="Convert to Julian date instead of Gregorian")
parser.add_argument("-r", "--round", action="store_true",
help="Round to simple day")
parser.add_argument("-t", "--tabs", action="store_true",
help="Separate output with tabs instead of commas")
args = parser.parse_args()
if args.file is None:
for j in args.jds:
try:
print(convert(j, args))
except ValueError as e_info:
if (str(e_info).startswith("JDN")):
print(f"Error: Cannot convert {j}, {e_info}")
pass
else:
for j in args.file:
try:
print(convert(float(j), args))
except ValueError as e_info:
if (str(e_info).startswith("JDN")):
print(f"Error: Cannot convert {j}, {e_info}")
pass
if __name__ == "__main__":
main()
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