FM / chardet

/snap/core24/1587/usr/lib/python3/dist-packages/chardet/

/snap/core24/1587/usr/lib/python3/dist-packages/chardet

Name	Size	Mode	Actions
cli/	-	0755	rm
metadata/	-	0755	rm
__pycache__/	-	0755	rm
big5freq.py	31274	0644	edit dl rm
big5prober.py	1763	0644	edit dl rm
chardistribution.py	10032	0644	edit dl rm
charsetgroupprober.py	3915	0644	edit dl rm
charsetprober.py	5420	0644	edit dl rm
codingstatemachine.py	3732	0644	edit dl rm
codingstatemachinedict.py	542	0644	edit dl rm
cp949prober.py	1860	0644	edit dl rm
enums.py	1683	0644	edit dl rm
escprober.py	4006	0644	edit dl rm
escsm.py	12176	0644	edit dl rm
eucjpprober.py	3934	0644	edit dl rm
euckrfreq.py	13566	0644	edit dl rm
euckrprober.py	1753	0644	edit dl rm
euctwfreq.py	36913	0644	edit dl rm
euctwprober.py	1753	0644	edit dl rm
gb2312freq.py	20735	0644	edit dl rm
gb2312prober.py	1759	0644	edit dl rm
hebrewprober.py	14537	0644	edit dl rm
jisfreq.py	25796	0644	edit dl rm
johabfreq.py	42498	0644	edit dl rm
johabprober.py	1752	0644	edit dl rm
jpcntx.py	27055	0644	edit dl rm
langbulgarianmodel.py	104550	0644	edit dl rm
langgreekmodel.py	98472	0644	edit dl rm
langhebrewmodel.py	98184	0644	edit dl rm
langhungarianmodel.py	101351	0644	edit dl rm
langrussianmodel.py	128023	0644	edit dl rm
langthaimodel.py	102762	0644	edit dl rm
langturkishmodel.py	95360	0644	edit dl rm
latin1prober.py	5380	0644	edit dl rm
macromanprober.py	6077	0644	edit dl rm
mbcharsetprober.py	3715	0644	edit dl rm
mbcsgroupprober.py	2131	0644	edit dl rm
mbcssm.py	30391	0644	edit dl rm
py.typed	0	0644	edit dl rm
resultdict.py	402	0644	edit dl rm
sbcharsetprober.py	6400	0644	edit dl rm
sbcsgroupprober.py	4137	0644	edit dl rm
sjisprober.py	4007	0644	edit dl rm
universaldetector.py	14848	0644	edit dl rm
utf8prober.py	2812	0644	edit dl rm
utf1632prober.py	8505	0644	edit dl rm
version.py	244	0644	edit dl rm
__init__.py	4797	0644	edit dl rm
__main__.py	123	0644	edit dl rm

Edit: /snap/core24/1587/usr/lib/python3/dist-packages/chardet/macromanprober.py (6077B)

######################## BEGIN LICENSE BLOCK ########################
# This code was modified from latin1prober.py by Rob Speer <rob@lumino.so>.
# 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):
#   Rob Speer - adapt to MacRoman encoding
#   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 typing import List, Union

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
ODD = 8  # character that is unlikely to appear
CLASS_NUM = 9  # total classes

# The change from Latin1 is that we explicitly look for extended characters
# that are infrequently-occurring symbols, and consider them to always be
# improbable. This should let MacRoman get out of the way of more likely
# encodings in most situations.

# fmt: off
MacRoman_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
    ACV, ACV, ACO, ACV, ACO, ACV, ACV, ASV,  # 80 - 87
    ASV, ASV, ASV, ASV, ASV, ASO, ASV, ASV,  # 88 - 8F
    ASV, ASV, ASV, ASV, ASV, ASV, ASO, ASV,  # 90 - 97
    ASV, ASV, ASV, ASV, ASV, ASV, ASV, ASV,  # 98 - 9F
    OTH, OTH, OTH, OTH, OTH, OTH, OTH, ASO,  # A0 - A7
    OTH, OTH, ODD, ODD, OTH, OTH, ACV, ACV,  # A8 - AF
    OTH, OTH, OTH, OTH, OTH, OTH, OTH, OTH,  # B0 - B7
    OTH, OTH, OTH, OTH, OTH, OTH, ASV, ASV,  # B8 - BF
    OTH, OTH, ODD, OTH, ODD, OTH, OTH, OTH,  # C0 - C7
    OTH, OTH, OTH, ACV, ACV, ACV, ACV, ASV,  # C8 - CF
    OTH, OTH, OTH, OTH, OTH, OTH, OTH, ODD,  # D0 - D7
    ASV, ACV, ODD, OTH, OTH, OTH, OTH, OTH,  # D8 - DF
    OTH, OTH, OTH, OTH, OTH, ACV, ACV, ACV,  # E0 - E7
    ACV, ACV, ACV, ACV, ACV, ACV, ACV, ACV,  # E8 - EF
    ODD, ACV, ACV, ACV, ACV, ASV, ODD, ODD,  # F0 - F7
    ODD, ODD, ODD, ODD, ODD, ODD, ODD, ODD,  # F8 - FF
)

# 0 : illegal
# 1 : very unlikely
# 2 : normal
# 3 : very likely
MacRomanClassModel = (
# UDF OTH ASC ASS ACV ACO ASV ASO ODD
    0,  0,  0,  0,  0,  0,  0,  0,  0,  # UDF
    0,  3,  3,  3,  3,  3,  3,  3,  1,  # OTH
    0,  3,  3,  3,  3,  3,  3,  3,  1,  # ASC
    0,  3,  3,  3,  1,  1,  3,  3,  1,  # ASS
    0,  3,  3,  3,  1,  2,  1,  2,  1,  # ACV
    0,  3,  3,  3,  3,  3,  3,  3,  1,  # ACO
    0,  3,  1,  3,  1,  1,  1,  3,  1,  # ASV
    0,  3,  1,  3,  1,  1,  3,  3,  1,  # ASO
    0,  1,  1,  1,  1,  1,  1,  1,  1,  # ODD
)
# fmt: on

class MacRomanProber(CharSetProber):
    def __init__(self) -> None:
        super().__init__()
        self._last_char_class = OTH
        self._freq_counter: List[int] = []
        self.reset()

def reset(self) -> None:
        self._last_char_class = OTH
        self._freq_counter = [0] * FREQ_CAT_NUM

# express the prior that MacRoman is a somewhat rare encoding;
        # this can be done by starting out in a slightly improbable state
        # that must be overcome
        self._freq_counter[2] = 10

super().reset()

@property
    def charset_name(self) -> str:
        return "MacRoman"

@property
    def language(self) -> str:
        return ""

def feed(self, byte_str: Union[bytes, bytearray]) -> ProbingState:
        byte_str = self.remove_xml_tags(byte_str)
        for c in byte_str:
            char_class = MacRoman_CharToClass[c]
            freq = MacRomanClassModel[(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) -> float:
        if self.state == ProbingState.NOT_ME:
            return 0.01

total = sum(self._freq_counter)
        confidence = (
            0.0
            if total < 0.01
            else (self._freq_counter[3] - self._freq_counter[1] * 20.0) / total
        )
        confidence = max(confidence, 0.0)
        # lower the confidence of MacRoman so that other more accurate
        # detector can take priority.
        confidence *= 0.73
        return confidence

cmd: