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kiwi-scp/kiwi_scp/misc.py

95 lines
2.5 KiB
Python

import re
from typing import Any, Type, Optional
import click
import ruamel.yaml
import ruamel.yaml.compat
from ._constants import HEADER_KIWI_CONF_NAME
def user_query(description: str, default: Any, cast_to: Type[Any] = str):
# prompt user as per argument
while True:
try:
str_value = input(f"Enter {description} [{default}] ").strip()
if str_value:
return cast_to(str_value)
else:
return default
except EOFError:
click.echo("Input aborted.")
return default
except Exception as e:
click.echo(f"Invalid input: {e}")
class YAML(ruamel.yaml.YAML):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.indent(offset=2)
def dump(self, data, stream=None, **kwargs) -> Optional[str]:
into_str: bool = False
if stream is None:
into_str = True
stream = ruamel.yaml.compat.StringIO()
super().dump(data, stream=stream, **kwargs)
if into_str:
return stream.getvalue()
@staticmethod
def _format_kiwi_yml(yml_string: str):
# insert newline before every main key
yml_string = re.sub(r'^(\S)', r'\n\1', yml_string, flags=re.MULTILINE)
# load header comment from file
with open(HEADER_KIWI_CONF_NAME, 'r') as stream:
yml_string = stream.read() + yml_string
return yml_string
def dump_kiwi_yml(self, data, **kwargs) -> Optional[str]:
return self.dump(data, transform=YAML._format_kiwi_yml, **kwargs)
def _surround(string, bang):
midlane = f"{bang * 3} {string} {bang * 3}"
sidelane = bang * len(midlane)
return f"{sidelane}\n{midlane}\n{sidelane}"
def _emphasize(lines):
if isinstance(lines, list):
return '\n'.join([_emphasize(line) for line in lines])
elif lines:
return f">>> {lines} <<<"
else:
return lines
def are_you_sure(prompt, default="no"):
if default.lower() == 'yes':
suffix = "[YES|no]"
else:
suffix = "[yes|NO]"
answer = input(
f"{_surround('MUST HAVE CAREFULING IN PROCESS', '!')}\n"
f"\n"
f"{_emphasize(prompt)}\n"
f"\n"
f"Are you sure you want to proceed? {suffix} "
).strip().lower()
if answer == '':
answer = default
while answer not in ['yes', 'no']:
answer = input("Please type 'yes' or 'no' explicitly: ").strip().lower()
return answer == 'yes'