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Files and Folders in: //usr/lib/python2.7/site-packages/pip/_vendor//chardet

NameTypeSizeLast ModifiedActions
cli Directory - -
__init__.py File 1559 bytes April 21 2022 18:08:21.
__init__.pyc File 994 bytes April 21 2022 18:08:34.
__init__.pyo File 994 bytes April 21 2022 18:08:34.
big5freq.py File 31254 bytes April 21 2022 18:08:21.
big5freq.pyc File 54701 bytes April 21 2022 18:08:34.
big5freq.pyo File 54701 bytes April 21 2022 18:08:34.
big5prober.py File 1757 bytes April 21 2022 18:08:21.
big5prober.pyc File 1357 bytes April 21 2022 18:08:34.
big5prober.pyo File 1357 bytes April 21 2022 18:08:34.
chardistribution.py File 9411 bytes April 21 2022 18:08:21.
chardistribution.pyc File 7851 bytes April 21 2022 18:08:34.
chardistribution.pyo File 7851 bytes April 21 2022 18:08:34.
charsetgroupprober.py File 3787 bytes April 21 2022 18:08:21.
charsetgroupprober.pyc File 2873 bytes April 21 2022 18:08:34.
charsetgroupprober.pyo File 2873 bytes April 21 2022 18:08:34.
charsetprober.py File 5110 bytes April 21 2022 18:08:21.
charsetprober.pyc File 4149 bytes April 21 2022 18:08:34.
charsetprober.pyo File 4149 bytes April 21 2022 18:08:34.
codingstatemachine.py File 3590 bytes April 21 2022 18:08:21.
codingstatemachine.pyc File 3360 bytes April 21 2022 18:08:34.
codingstatemachine.pyo File 3360 bytes April 21 2022 18:08:34.
compat.py File 1134 bytes April 21 2022 18:08:21.
compat.pyc File 404 bytes April 21 2022 18:08:34.
compat.pyo File 404 bytes April 21 2022 18:08:34.
cp949prober.py File 1855 bytes April 21 2022 18:08:21.
cp949prober.pyc File 1365 bytes April 21 2022 18:08:34.
cp949prober.pyo File 1365 bytes April 21 2022 18:08:34.
enums.py File 1661 bytes April 21 2022 18:08:21.
enums.pyc File 3129 bytes April 21 2022 18:08:34.
enums.pyo File 3129 bytes April 21 2022 18:08:34.
escprober.py File 3950 bytes April 21 2022 18:08:21.
escprober.pyc File 3231 bytes April 21 2022 18:08:34.
escprober.pyo File 3231 bytes April 21 2022 18:08:34.
escsm.py File 10510 bytes April 21 2022 18:08:21.
escsm.pyc File 8015 bytes April 21 2022 18:08:34.
escsm.pyo File 8015 bytes April 21 2022 18:08:34.
eucjpprober.py File 3749 bytes April 21 2022 18:08:21.
eucjpprober.pyc File 3046 bytes April 21 2022 18:08:34.
eucjpprober.pyo File 3046 bytes April 21 2022 18:08:34.
euckrfreq.py File 13546 bytes April 21 2022 18:08:21.
euckrfreq.pyc File 24087 bytes April 21 2022 18:08:34.
euckrfreq.pyo File 24087 bytes April 21 2022 18:08:34.
euckrprober.py File 1748 bytes April 21 2022 18:08:21.
euckrprober.pyc File 1366 bytes April 21 2022 18:08:34.
euckrprober.pyo File 1366 bytes April 21 2022 18:08:34.
euctwfreq.py File 31621 bytes April 21 2022 18:08:21.
euctwfreq.pyc File 54710 bytes April 21 2022 18:08:34.
euctwfreq.pyo File 54710 bytes April 21 2022 18:08:34.
euctwprober.py File 1747 bytes April 21 2022 18:08:21.
euctwprober.pyc File 1366 bytes April 21 2022 18:08:34.
euctwprober.pyo File 1366 bytes April 21 2022 18:08:34.
gb2312freq.py File 20715 bytes April 21 2022 18:08:21.
gb2312freq.pyc File 38352 bytes April 21 2022 18:08:34.
gb2312freq.pyo File 38352 bytes April 21 2022 18:08:34.
gb2312prober.py File 1754 bytes April 21 2022 18:08:21.
gb2312prober.pyc File 1375 bytes April 21 2022 18:08:34.
gb2312prober.pyo File 1375 bytes April 21 2022 18:08:34.
hebrewprober.py File 13838 bytes April 21 2022 18:08:21.
hebrewprober.pyc File 3814 bytes April 21 2022 18:08:34.
hebrewprober.pyo File 3814 bytes April 21 2022 18:08:34.
jisfreq.py File 25777 bytes April 21 2022 18:08:21.
jisfreq.pyc File 44496 bytes April 21 2022 18:08:34.
jisfreq.pyo File 44496 bytes April 21 2022 18:08:34.
jpcntx.py File 19643 bytes April 21 2022 18:08:21.
jpcntx.pyc File 25330 bytes April 21 2022 18:08:34.
jpcntx.pyo File 25330 bytes April 21 2022 18:08:34.
langbulgarianmodel.py File 12839 bytes April 21 2022 18:08:21.
langbulgarianmodel.pyc File 24964 bytes April 21 2022 18:08:34.
langbulgarianmodel.pyo File 24964 bytes April 21 2022 18:08:34.
langcyrillicmodel.py File 17948 bytes April 21 2022 18:08:21.
langcyrillicmodel.pyc File 30684 bytes April 21 2022 18:08:34.
langcyrillicmodel.pyo File 30684 bytes April 21 2022 18:08:34.
langgreekmodel.py File 12688 bytes April 21 2022 18:08:21.
langgreekmodel.pyc File 24639 bytes April 21 2022 18:08:34.
langgreekmodel.pyo File 24639 bytes April 21 2022 18:08:34.
langhebrewmodel.py File 11345 bytes April 21 2022 18:08:21.
langhebrewmodel.pyc File 23450 bytes April 21 2022 18:08:34.
langhebrewmodel.pyo File 23450 bytes April 21 2022 18:08:34.
langhungarianmodel.py File 12592 bytes April 21 2022 18:08:21.
langhungarianmodel.pyc File 24934 bytes April 21 2022 18:08:34.
langhungarianmodel.pyo File 24934 bytes April 21 2022 18:08:34.
langthaimodel.py File 11290 bytes April 21 2022 18:08:21.
langthaimodel.pyc File 23429 bytes April 21 2022 18:08:34.
langthaimodel.pyo File 23429 bytes April 21 2022 18:08:34.
langturkishmodel.py File 11102 bytes April 21 2022 18:08:21.
langturkishmodel.pyc File 23446 bytes April 21 2022 18:08:34.
langturkishmodel.pyo File 23446 bytes April 21 2022 18:08:34.
latin1prober.py File 5370 bytes April 21 2022 18:08:21.
latin1prober.pyc File 3741 bytes April 21 2022 18:08:34.
latin1prober.pyo File 3741 bytes April 21 2022 18:08:34.
mbcharsetprober.py File 3413 bytes April 21 2022 18:08:21.
mbcharsetprober.pyc File 2795 bytes April 21 2022 18:08:34.
mbcharsetprober.pyo File 2795 bytes April 21 2022 18:08:34.
mbcsgroupprober.py File 2012 bytes April 21 2022 18:08:21.
mbcsgroupprober.pyc File 1336 bytes April 21 2022 18:08:34.
mbcsgroupprober.pyo File 1336 bytes April 21 2022 18:08:34.
mbcssm.py File 25481 bytes April 21 2022 18:08:21.
mbcssm.pyc File 19121 bytes April 21 2022 18:08:34.
mbcssm.pyo File 19121 bytes April 21 2022 18:08:34.
sbcharsetprober.py File 5657 bytes April 21 2022 18:08:21.
sbcharsetprober.pyc File 3674 bytes April 21 2022 18:08:34.
sbcharsetprober.pyo File 3674 bytes April 21 2022 18:08:34.
sbcsgroupprober.py File 3546 bytes April 21 2022 18:08:21.
sbcsgroupprober.pyc File 1929 bytes April 21 2022 18:08:34.
sbcsgroupprober.pyo File 1929 bytes April 21 2022 18:08:34.
sjisprober.py File 3774 bytes April 21 2022 18:08:21.
sjisprober.pyc File 3067 bytes April 21 2022 18:08:34.
sjisprober.pyo File 3067 bytes April 21 2022 18:08:34.
universaldetector.py File 12485 bytes April 21 2022 18:08:21.
universaldetector.pyc File 7121 bytes April 21 2022 18:08:34.
universaldetector.pyo File 7121 bytes April 21 2022 18:08:34.
utf8prober.py File 2766 bytes April 21 2022 18:08:21.
utf8prober.pyc File 2516 bytes April 21 2022 18:08:34.
utf8prober.pyo File 2516 bytes April 21 2022 18:08:34.
version.py File 242 bytes April 21 2022 18:08:21.
version.pyc File 431 bytes April 21 2022 18:08:34.
version.pyo File 431 bytes April 21 2022 18:08:34.

Reading File: //usr/lib/python2.7/site-packages/pip/_vendor//chardet/latin1prober.py

######################## 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

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