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import sys
import click
from .commands import dangerous_commands
class ConfirmBoolParamType(click.ParamType):
name = "confirmation"
def convert(self, value, param, ctx):
if isinstance(value, bool):
return bool(value)
value = value.lower()
if value in ("yes", "y"):
return True
elif value in ("no", "n"):
return False
self.fail("%s is not a valid boolean" % value, param, ctx)
def __repr__(self):
return "BOOL"
BOOLEAN_TYPE = ConfirmBoolParamType()
def is_dangerous(command):
"""
:return : return True, reason str if command is dangerous;
return False, None otherwise.
"""
reason = dangerous_commands.get(command)
return reason is not None, reason
def prompt(*args, **kwargs):
"""Prompt the user for input and handle any abort exceptions."""
try:
return click.prompt(*args, **kwargs)
except click.Abort:
return False
def confirm_dangerous_command(upper_command):
"""Check if the query is destructive and prompts the user to confirm.
Returns:
* None if the query is non-destructive or we can't prompt the user.
* True if the query is destructive and the user wants to proceed.
* False if the query is destructive and the user doesn't want to proceed.
"""
dangerous, reason = is_dangerous(upper_command)
prompt_text = f"{reason}.\n" "Do you want to proceed? (y/n)"
if dangerous and sys.stdin.isatty():
return prompt(prompt_text, type=BOOLEAN_TYPE)
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