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import sys
from datetime import datetime
from difflib import unified_diff
from pathlib import Path
from typing import Optional
def format_simplified(import_line: str) -> str:
import_line = import_line.strip()
if import_line.startswith("from "):
import_line = import_line.replace("from ", "")
import_line = import_line.replace(" import ", ".")
elif import_line.startswith("import "):
import_line = import_line.replace("import ", "")
return import_line
def format_natural(import_line: str) -> str:
import_line = import_line.strip()
if not import_line.startswith("from ") and not import_line.startswith("import "):
if "." not in import_line:
return "import {0}".format(import_line)
parts = import_line.split(".")
end = parts.pop(-1)
return "from {0} import {1}".format(".".join(parts), end)
return import_line
def show_unified_diff(*, file_input: str, file_output: str, file_path: Optional[Path]) -> None:
file_name = '' if file_path is None else str(file_path)
file_mtime = str(datetime.now() if file_path is None
else datetime.fromtimestamp(file_path.stat().st_mtime))
unified_diff_lines = unified_diff(
file_input.splitlines(keepends=True),
file_output.splitlines(keepends=True),
fromfile=file_name + ':before',
tofile=file_name + ':after',
fromfiledate=file_mtime,
tofiledate=str(datetime.now())
)
for line in unified_diff_lines:
sys.stdout.write(line)
def ask_whether_to_apply_changes_to_file(fpath: str) -> bool:
answer = None
while answer not in ('yes', 'y', 'no', 'n', 'quit', 'q'):
answer = input("Apply suggested changes to '{0}' [y/n/q]? ".format(fpath)).lower()
if answer in ('no', 'n'):
return False
if answer in ('quit', 'q'):
sys.exit(1)
return True
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