diff options
Diffstat (limited to 'venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/utf8prober.py')
| -rw-r--r-- | venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/utf8prober.py | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/utf8prober.py b/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/utf8prober.py deleted file mode 100644 index 4573267..0000000 --- a/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/utf8prober.py +++ /dev/null | |||
| @@ -1,82 +0,0 @@ | |||
| 1 | ######################## BEGIN LICENSE BLOCK ######################## | ||
| 2 | # The Original Code is mozilla.org code. | ||
| 3 | # | ||
| 4 | # The Initial Developer of the Original Code is | ||
| 5 | # Netscape Communications Corporation. | ||
| 6 | # Portions created by the Initial Developer are Copyright (C) 1998 | ||
| 7 | # the Initial Developer. All Rights Reserved. | ||
| 8 | # | ||
| 9 | # Contributor(s): | ||
| 10 | # Mark Pilgrim - port to Python | ||
| 11 | # | ||
| 12 | # This library is free software; you can redistribute it and/or | ||
| 13 | # modify it under the terms of the GNU Lesser General Public | ||
| 14 | # License as published by the Free Software Foundation; either | ||
| 15 | # version 2.1 of the License, or (at your option) any later version. | ||
| 16 | # | ||
| 17 | # This library is distributed in the hope that it will be useful, | ||
| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 20 | # Lesser General Public License for more details. | ||
| 21 | # | ||
| 22 | # You should have received a copy of the GNU Lesser General Public | ||
| 23 | # License along with this library; if not, write to the Free Software | ||
| 24 | # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | ||
| 25 | # 02110-1301 USA | ||
| 26 | ######################### END LICENSE BLOCK ######################### | ||
| 27 | |||
| 28 | from .charsetprober import CharSetProber | ||
| 29 | from .enums import ProbingState, MachineState | ||
| 30 | from .codingstatemachine import CodingStateMachine | ||
| 31 | from .mbcssm import UTF8_SM_MODEL | ||
| 32 | |||
| 33 | |||
| 34 | |||
| 35 | class UTF8Prober(CharSetProber): | ||
| 36 | ONE_CHAR_PROB = 0.5 | ||
| 37 | |||
| 38 | def __init__(self): | ||
| 39 | super(UTF8Prober, self).__init__() | ||
| 40 | self.coding_sm = CodingStateMachine(UTF8_SM_MODEL) | ||
| 41 | self._num_mb_chars = None | ||
| 42 | self.reset() | ||
| 43 | |||
| 44 | def reset(self): | ||
| 45 | super(UTF8Prober, self).reset() | ||
| 46 | self.coding_sm.reset() | ||
| 47 | self._num_mb_chars = 0 | ||
| 48 | |||
| 49 | @property | ||
| 50 | def charset_name(self): | ||
| 51 | return "utf-8" | ||
| 52 | |||
| 53 | @property | ||
| 54 | def language(self): | ||
| 55 | return "" | ||
| 56 | |||
| 57 | def feed(self, byte_str): | ||
| 58 | for c in byte_str: | ||
| 59 | coding_state = self.coding_sm.next_state(c) | ||
| 60 | if coding_state == MachineState.ERROR: | ||
| 61 | self._state = ProbingState.NOT_ME | ||
| 62 | break | ||
| 63 | elif coding_state == MachineState.ITS_ME: | ||
| 64 | self._state = ProbingState.FOUND_IT | ||
| 65 | break | ||
| 66 | elif coding_state == MachineState.START: | ||
| 67 | if self.coding_sm.get_current_charlen() >= 2: | ||
| 68 | self._num_mb_chars += 1 | ||
| 69 | |||
| 70 | if self.state == ProbingState.DETECTING: | ||
| 71 | if self.get_confidence() > self.SHORTCUT_THRESHOLD: | ||
| 72 | self._state = ProbingState.FOUND_IT | ||
| 73 | |||
| 74 | return self.state | ||
| 75 | |||
| 76 | def get_confidence(self): | ||
| 77 | unlike = 0.99 | ||
| 78 | if self._num_mb_chars < 6: | ||
| 79 | unlike *= self.ONE_CHAR_PROB ** self._num_mb_chars | ||
| 80 | return 1.0 - unlike | ||
| 81 | else: | ||
| 82 | return unlike | ||