#!/usr/bin/env python3# SPDX-License-Identifier: GPL-2.0## Utilities for printing and coloring output.## Copyright (C) 2022, Google LLC.# Author: Daniel Latypov <dlatypov@google.com> import datetimeimport sysimport typing _RESET = '\033[0;0m' class Printer:	"""Wraps a file object, providing utilities for coloring output, etc.""" 	def __init__(self, print: bool=True, output: typing.IO[str]=sys.stdout):		self._output = output		self._print = print		if print:			self._use_color = output.isatty()		else:			self._use_color = False 	def print(self, message: str) -> None:		if self._print:			print(message, file=self._output) 	def print_with_timestamp(self, message: str) -> None:		ts = datetime.datetime.now().strftime('%H:%M:%S')		self.print(f'[{ts}] {message}') 	def _color(self, code: str, text: str) -> str:		if not self._use_color:			return text		return code + text + _RESET 	def red(self, text: str) -> str:		return self._color('\033[1;31m', text) 	def yellow(self, text: str) -> str:		return self._color('\033[1;33m', text) 	def green(self, text: str) -> str:		return self._color('\033[1;32m', text) 	def color_len(self) -> int:		"""Returns the length of the color escape codes."""		return len(self.red('')) # Provides a default instance that prints to stdoutstdout = Printer()null_printer = Printer(print=False)