#! /usr/bin/env python3
# -*- coding: utf-8 -*-
import re
# sentinel relative orbit numbers go from 1 to 143
[docs]
def check_mgrs_code(code_str):
""" validate a MGRS tile code and make it uppercase
Parameters
----------
tile_code : str
MGRS tile code
Returns
-------
code_str : str
validated and normalized tile code
Notes
-----
The following acronyms are used:
- MGRS : US Military Grid Reference System
"""
if not isinstance(code_str, str):
raise TypeError("please provide a string")
tile_code = code_str.upper()
pattern = "[0-9][0-9][A-Z][A-Z][A-Z]"
if not bool(re.match(pattern, tile_code)):
raise ValueError("please provide a correct MGRS tile code")
return tile_code
[docs]
def check_sen2_safe_code(code_str):
""" check if the .SAFE code string is correct
Parameters
----------
code_str: str, len=65
folder name where L1C Sentinel-2 data is situated
"""
if not isinstance(code_str, str):
raise TypeError("please provide a string")
code_str = code_str.upper()
pattern = "S2A_MSIL1C_[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]" + \
"T[0-9][0-9][0-9][0-9][0-9][0-9]_" + \
"N[0-9][0-9][0-9][0-9]_" + \
"R[0-9][0-9][0-9]_" + \
"T[0-9][0-9][A-Z][A-Z][A-Z]_" + \
"[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]" + \
"T[0-9][0-9][0-9][0-9][0-9][0-9].SAFE"
if not bool(re.match(pattern, code_str)):
raise ValueError("please provide a correct Sentinel-2 tile code")
return code_str