diff options
Diffstat (limited to 'venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/chardet/latin1prober.py')
| -rw-r--r-- | venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/chardet/latin1prober.py | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/chardet/latin1prober.py b/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/chardet/latin1prober.py deleted file mode 100644 index 7d1e8c2..0000000 --- a/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_vendor/chardet/latin1prober.py +++ /dev/null @@ -1,145 +0,0 @@ -######################## BEGIN LICENSE BLOCK ######################## -# The Original Code is Mozilla Universal charset detector code. -# -# The Initial Developer of the Original Code is -# Netscape Communications Corporation. -# Portions created by the Initial Developer are Copyright (C) 2001 -# the Initial Developer. All Rights Reserved. -# -# Contributor(s): -# Mark Pilgrim - port to Python -# Shy Shalom - original C code -# -# 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 ######################### - -from .charsetprober import CharSetProber -from .enums import ProbingState - -FREQ_CAT_NUM = 4 - -UDF = 0 # undefined -OTH = 1 # other -ASC = 2 # ascii capital letter -ASS = 3 # ascii small letter -ACV = 4 # accent capital vowel -ACO = 5 # accent capital other -ASV = 6 # accent small vowel -ASO = 7 # accent small other -CLASS_NUM = 8 # total classes - -Latin1_CharToClass = ( - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 00 - 07 - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 08 - 0F - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 10 - 17 - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 18 - 1F - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 20 - 27 - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 28 - 2F - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 30 - 37 - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 38 - 3F - OTH, ASC, ASC, ASC, ASC, ASC, ASC, ASC, # 40 - 47 - ASC, ASC, ASC, ASC, ASC, ASC, ASC, ASC, # 48 - 4F - ASC, ASC, ASC, ASC, ASC, ASC, ASC, ASC, # 50 - 57 - ASC, ASC, ASC, OTH, OTH, OTH, OTH, OTH, # 58 - 5F - OTH, ASS, ASS, ASS, ASS, ASS, ASS, ASS, # 60 - 67 - ASS, ASS, ASS, ASS, ASS, ASS, ASS, ASS, # 68 - 6F - ASS, ASS, ASS, ASS, ASS, ASS, ASS, ASS, # 70 - 77 - ASS, ASS, ASS, OTH, OTH, OTH, OTH, OTH, # 78 - 7F - OTH, UDF, OTH, ASO, OTH, OTH, OTH, OTH, # 80 - 87 - OTH, OTH, ACO, OTH, ACO, UDF, ACO, UDF, # 88 - 8F - UDF, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # 90 - 97 - OTH, OTH, ASO, OTH, ASO, UDF, ASO, ACO, # 98 - 9F - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # A0 - A7 - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # A8 - AF - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # B0 - B7 - OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH, # B8 - BF - ACV, ACV, ACV, ACV, ACV, ACV, ACO, ACO, # C0 - C7 - ACV, ACV, ACV, ACV, ACV, ACV, ACV, ACV, # C8 - CF - ACO, ACO, ACV, ACV, ACV, ACV, ACV, OTH, # D0 - D7 - ACV, ACV, ACV, ACV, ACV, ACO, ACO, ACO, # D8 - DF - ASV, ASV, ASV, ASV, ASV, ASV, ASO, ASO, # E0 - E7 - ASV, ASV, ASV, ASV, ASV, ASV, ASV, ASV, # E8 - EF - ASO, ASO, ASV, ASV, ASV, ASV, ASV, OTH, # F0 - F7 - ASV, ASV, ASV, ASV, ASV, ASO, ASO, ASO, # F8 - FF -) - -# 0 : illegal -# 1 : very unlikely -# 2 : normal -# 3 : very likely -Latin1ClassModel = ( -# UDF OTH ASC ASS ACV ACO ASV ASO - 0, 0, 0, 0, 0, 0, 0, 0, # UDF - 0, 3, 3, 3, 3, 3, 3, 3, # OTH - 0, 3, 3, 3, 3, 3, 3, 3, # ASC - 0, 3, 3, 3, 1, 1, 3, 3, # ASS - 0, 3, 3, 3, 1, 2, 1, 2, # ACV - 0, 3, 3, 3, 3, 3, 3, 3, # ACO - 0, 3, 1, 3, 1, 1, 1, 3, # ASV - 0, 3, 1, 3, 1, 1, 3, 3, # ASO -) - - -class Latin1Prober(CharSetProber): - def __init__(self): - super(Latin1Prober, self).__init__() - self._last_char_class = None - self._freq_counter = None - self.reset() - - def reset(self): - self._last_char_class = OTH - self._freq_counter = [0] * FREQ_CAT_NUM - CharSetProber.reset(self) - - @property - def charset_name(self): - return "ISO-8859-1" - - @property - def language(self): - return "" - - def feed(self, byte_str): - byte_str = self.filter_with_english_letters(byte_str) - for c in byte_str: - char_class = Latin1_CharToClass[c] - freq = Latin1ClassModel[(self._last_char_class * CLASS_NUM) - + char_class] - if freq == 0: - self._state = ProbingState.NOT_ME - break - self._freq_counter[freq] += 1 - self._last_char_class = char_class - - return self.state - - def get_confidence(self): - if self.state == ProbingState.NOT_ME: - return 0.01 - - total = sum(self._freq_counter) - if total < 0.01: - confidence = 0.0 - else: - confidence = ((self._freq_counter[3] - self._freq_counter[1] * 20.0) - / total) - if confidence < 0.0: - confidence = 0.0 - # lower the confidence of latin1 so that other more accurate - # detector can take priority. - confidence = confidence * 0.73 - return confidence |