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######################################################################
#
# File: b2/_internal/_cli/shell.py
#
# Copyright 2023 Backblaze Inc. All Rights Reserved.
#
# License https://www.backblaze.com/using_b2_code.html
#
######################################################################
import os
import os.path
import shutil
from typing import Optional
def detect_shell() -> Optional[str]:
"""Detect the shell we are running in."""
shell_var = os.environ.get('SHELL')
if shell_var:
return os.path.basename(shell_var)
return None
def resolve_short_call_name(binary_path: str) -> str:
"""
Resolve the short name of the binary.
If binary is in PATH, return only basename, otherwise return a full path.
This method is to be used with sys.argv[0] to resolve handy name for the user instead of full path.
"""
if shutil.which(binary_path) == binary_path:
return os.path.basename(binary_path)
return binary_path
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