Merge "Allow ParseOptions to compose multiple option parsers easily" into main am: f0e5c7e3

import threading

import time

import zipfile

from typing import Iterable, Callable

from dataclasses import dataclass

from genericpath import isdir

from hashlib import sha1, sha256

import images

import rangelib

import sparse_img

from blockimgdiff import BlockImageDiff

logger = logging.getLogger(__name__)

@dataclass

class OptionHandler:

  extra_long_opts: Iterable[str]

  handler: Callable

class Options(object):

  def __init__(self):

def ParseOptions(argv,

                 docstring,

                 extra_opts="", extra_long_opts=(),

                 extra_option_handler=None):

                 extra_option_handler: Iterable[OptionHandler] = None):

  """Parse the options in argv and return any arguments that aren't

  flags.  docstring is the calling module's docstring, to be displayed

  for errors and -h.  extra_opts and extra_long_opts are for flags

  defined by the caller, which are processed by passing them to

  extra_option_handler."""

  extra_long_opts = list(extra_long_opts)

  if not isinstance(extra_option_handler, Iterable):

    extra_option_handler = [extra_option_handler]

  for handler in extra_option_handler:

    if isinstance(handler, OptionHandler):

      extra_long_opts.extend(handler.extra_long_opts)

  try:

    opts, args = getopt.getopt(

    elif o in ("--logfile",):

      OPTIONS.logfile = a

    else:

      if extra_option_handler is None or not extra_option_handler(o, a):

        assert False, "unknown option \"%s\"" % (o,)

      if extra_option_handler is None:

        raise ValueError("unknown option \"%s\"" % (o,))

      success = False

      for handler in extra_option_handler:

        if isinstance(handler, OptionHandler):

          if handler.handler(o, a):

            success = True

            break

        elif handler(o, a):

          success = True

      if not success:

        raise ValueError("unknown option \"%s\"" % (o,))

  if OPTIONS.search_path:

    os.environ["PATH"] = (os.path.join(OPTIONS.search_path, "bin") +