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diff --git a/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/chardet/codingstatemachine.py b/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/chardet/codingstatemachine.py
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-######################## BEGIN LICENSE BLOCK ########################
-# The Original Code is mozilla.org code.
-#
-# The Initial Developer of the Original Code is
-# Netscape Communications Corporation.
-# Portions created by the Initial Developer are Copyright (C) 1998
-# the Initial Developer. All Rights Reserved.
-#
-# Contributor(s):
-# Mark Pilgrim - port to Python
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Lesser General Public
-# License as published by the Free Software Foundation; either
-# version 2.1 of the License, or (at your option) any later version.
-#
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# Lesser General Public License for more details.
-#
-# You should have received a copy of the GNU Lesser General Public
-# License along with this library; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-######################### END LICENSE BLOCK #########################
-
-import logging
-
-from .enums import MachineState
-
-
-class CodingStateMachine(object):
- """
- A state machine to verify a byte sequence for a particular encoding. For
- each byte the detector receives, it will feed that byte to every active
- state machine available, one byte at a time. The state machine changes its
- state based on its previous state and the byte it receives. There are 3
- states in a state machine that are of interest to an auto-detector:
-
- START state: This is the state to start with, or a legal byte sequence
- (i.e. a valid code point) for character has been identified.
-
- ME state: This indicates that the state machine identified a byte sequence
- that is specific to the charset it is designed for and that
- there is no other possible encoding which can contain this byte
- sequence. This will to lead to an immediate positive answer for
- the detector.
-
- ERROR state: This indicates the state machine identified an illegal byte
- sequence for that encoding. This will lead to an immediate
- negative answer for this encoding. Detector will exclude this
- encoding from consideration from here on.
- """
- def __init__(self, sm):
- self._model = sm
- self._curr_byte_pos = 0
- self._curr_char_len = 0
- self._curr_state = None
- self.logger = logging.getLogger(__name__)
- self.reset()
-
- def reset(self):
- self._curr_state = MachineState.START
-
- def next_state(self, c):
- # for each byte we get its class
- # if it is first byte, we also get byte length
- byte_class = self._model['class_table'][c]
- if self._curr_state == MachineState.START:
- self._curr_byte_pos = 0
- self._curr_char_len = self._model['char_len_table'][byte_class]
- # from byte's class and state_table, we get its next state
- curr_state = (self._curr_state * self._model['class_factor']
- + byte_class)
- self._curr_state = self._model['state_table'][curr_state]
- self._curr_byte_pos += 1
- return self._curr_state
-
- def get_current_charlen(self):
- return self._curr_char_len
-
- def get_coding_state_machine(self):
- return self._model['name']
-
- @property
- def language(self):
- return self._model['language']