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#!/usr/local/anaconda2/bin/python | ||
# -*- coding: utf-8 -*- | ||
import re | ||
import sys | ||
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from chardet.cli.chardetect import main | ||
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if __name__ == '__main__': | ||
sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0]) | ||
sys.exit(main()) |
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from .core import where | ||
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__version__ = "2019.03.09" |
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from certifi import where | ||
print(where()) |
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# -*- coding: utf-8 -*- | ||
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""" | ||
certifi.py | ||
~~~~~~~~~~ | ||
This module returns the installation location of cacert.pem. | ||
""" | ||
import os | ||
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def where(): | ||
f = os.path.dirname(__file__) | ||
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return os.path.join(f, 'cacert.pem') |
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######################## BEGIN LICENSE BLOCK ######################## | ||
# 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 ######################### | ||
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from .compat import PY2, PY3 | ||
from .universaldetector import UniversalDetector | ||
from .version import __version__, VERSION | ||
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def detect(byte_str): | ||
""" | ||
Detect the encoding of the given byte string. | ||
:param byte_str: The byte sequence to examine. | ||
:type byte_str: ``bytes`` or ``bytearray`` | ||
""" | ||
if not isinstance(byte_str, bytearray): | ||
if not isinstance(byte_str, bytes): | ||
raise TypeError('Expected object of type bytes or bytearray, got: ' | ||
'{0}'.format(type(byte_str))) | ||
else: | ||
byte_str = bytearray(byte_str) | ||
detector = UniversalDetector() | ||
detector.feed(byte_str) | ||
return detector.close() |
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######################## BEGIN LICENSE BLOCK ######################## | ||
# The Original Code is Mozilla Communicator client 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 ######################### | ||
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from .mbcharsetprober import MultiByteCharSetProber | ||
from .codingstatemachine import CodingStateMachine | ||
from .chardistribution import Big5DistributionAnalysis | ||
from .mbcssm import BIG5_SM_MODEL | ||
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class Big5Prober(MultiByteCharSetProber): | ||
def __init__(self): | ||
super(Big5Prober, self).__init__() | ||
self.coding_sm = CodingStateMachine(BIG5_SM_MODEL) | ||
self.distribution_analyzer = Big5DistributionAnalysis() | ||
self.reset() | ||
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@property | ||
def charset_name(self): | ||
return "Big5" | ||
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@property | ||
def language(self): | ||
return "Chinese" |
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######################## BEGIN LICENSE BLOCK ######################## | ||
# The Original Code is Mozilla Communicator client 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 ######################### | ||
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from .euctwfreq import (EUCTW_CHAR_TO_FREQ_ORDER, EUCTW_TABLE_SIZE, | ||
EUCTW_TYPICAL_DISTRIBUTION_RATIO) | ||
from .euckrfreq import (EUCKR_CHAR_TO_FREQ_ORDER, EUCKR_TABLE_SIZE, | ||
EUCKR_TYPICAL_DISTRIBUTION_RATIO) | ||
from .gb2312freq import (GB2312_CHAR_TO_FREQ_ORDER, GB2312_TABLE_SIZE, | ||
GB2312_TYPICAL_DISTRIBUTION_RATIO) | ||
from .big5freq import (BIG5_CHAR_TO_FREQ_ORDER, BIG5_TABLE_SIZE, | ||
BIG5_TYPICAL_DISTRIBUTION_RATIO) | ||
from .jisfreq import (JIS_CHAR_TO_FREQ_ORDER, JIS_TABLE_SIZE, | ||
JIS_TYPICAL_DISTRIBUTION_RATIO) | ||
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class CharDistributionAnalysis(object): | ||
ENOUGH_DATA_THRESHOLD = 1024 | ||
SURE_YES = 0.99 | ||
SURE_NO = 0.01 | ||
MINIMUM_DATA_THRESHOLD = 3 | ||
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def __init__(self): | ||
# Mapping table to get frequency order from char order (get from | ||
# GetOrder()) | ||
self._char_to_freq_order = None | ||
self._table_size = None # Size of above table | ||
# This is a constant value which varies from language to language, | ||
# used in calculating confidence. See | ||
# http://www.mozilla.org/projects/intl/UniversalCharsetDetection.html | ||
# for further detail. | ||
self.typical_distribution_ratio = None | ||
self._done = None | ||
self._total_chars = None | ||
self._freq_chars = None | ||
self.reset() | ||
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def reset(self): | ||
"""reset analyser, clear any state""" | ||
# If this flag is set to True, detection is done and conclusion has | ||
# been made | ||
self._done = False | ||
self._total_chars = 0 # Total characters encountered | ||
# The number of characters whose frequency order is less than 512 | ||
self._freq_chars = 0 | ||
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def feed(self, char, char_len): | ||
"""feed a character with known length""" | ||
if char_len == 2: | ||
# we only care about 2-bytes character in our distribution analysis | ||
order = self.get_order(char) | ||
else: | ||
order = -1 | ||
if order >= 0: | ||
self._total_chars += 1 | ||
# order is valid | ||
if order < self._table_size: | ||
if 512 > self._char_to_freq_order[order]: | ||
self._freq_chars += 1 | ||
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def get_confidence(self): | ||
"""return confidence based on existing data""" | ||
# if we didn't receive any character in our consideration range, | ||
# return negative answer | ||
if self._total_chars <= 0 or self._freq_chars <= self.MINIMUM_DATA_THRESHOLD: | ||
return self.SURE_NO | ||
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if self._total_chars != self._freq_chars: | ||
r = (self._freq_chars / ((self._total_chars - self._freq_chars) | ||
* self.typical_distribution_ratio)) | ||
if r < self.SURE_YES: | ||
return r | ||
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# normalize confidence (we don't want to be 100% sure) | ||
return self.SURE_YES | ||
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def got_enough_data(self): | ||
# It is not necessary to receive all data to draw conclusion. | ||
# For charset detection, certain amount of data is enough | ||
return self._total_chars > self.ENOUGH_DATA_THRESHOLD | ||
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def get_order(self, byte_str): | ||
# We do not handle characters based on the original encoding string, | ||
# but convert this encoding string to a number, here called order. | ||
# This allows multiple encodings of a language to share one frequency | ||
# table. | ||
return -1 | ||
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class EUCTWDistributionAnalysis(CharDistributionAnalysis): | ||
def __init__(self): | ||
super(EUCTWDistributionAnalysis, self).__init__() | ||
self._char_to_freq_order = EUCTW_CHAR_TO_FREQ_ORDER | ||
self._table_size = EUCTW_TABLE_SIZE | ||
self.typical_distribution_ratio = EUCTW_TYPICAL_DISTRIBUTION_RATIO | ||
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def get_order(self, byte_str): | ||
# for euc-TW encoding, we are interested | ||
# first byte range: 0xc4 -- 0xfe | ||
# second byte range: 0xa1 -- 0xfe | ||
# no validation needed here. State machine has done that | ||
first_char = byte_str[0] | ||
if first_char >= 0xC4: | ||
return 94 * (first_char - 0xC4) + byte_str[1] - 0xA1 | ||
else: | ||
return -1 | ||
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class EUCKRDistributionAnalysis(CharDistributionAnalysis): | ||
def __init__(self): | ||
super(EUCKRDistributionAnalysis, self).__init__() | ||
self._char_to_freq_order = EUCKR_CHAR_TO_FREQ_ORDER | ||
self._table_size = EUCKR_TABLE_SIZE | ||
self.typical_distribution_ratio = EUCKR_TYPICAL_DISTRIBUTION_RATIO | ||
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def get_order(self, byte_str): | ||
# for euc-KR encoding, we are interested | ||
# first byte range: 0xb0 -- 0xfe | ||
# second byte range: 0xa1 -- 0xfe | ||
# no validation needed here. State machine has done that | ||
first_char = byte_str[0] | ||
if first_char >= 0xB0: | ||
return 94 * (first_char - 0xB0) + byte_str[1] - 0xA1 | ||
else: | ||
return -1 | ||
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class GB2312DistributionAnalysis(CharDistributionAnalysis): | ||
def __init__(self): | ||
super(GB2312DistributionAnalysis, self).__init__() | ||
self._char_to_freq_order = GB2312_CHAR_TO_FREQ_ORDER | ||
self._table_size = GB2312_TABLE_SIZE | ||
self.typical_distribution_ratio = GB2312_TYPICAL_DISTRIBUTION_RATIO | ||
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def get_order(self, byte_str): | ||
# for GB2312 encoding, we are interested | ||
# first byte range: 0xb0 -- 0xfe | ||
# second byte range: 0xa1 -- 0xfe | ||
# no validation needed here. State machine has done that | ||
first_char, second_char = byte_str[0], byte_str[1] | ||
if (first_char >= 0xB0) and (second_char >= 0xA1): | ||
return 94 * (first_char - 0xB0) + second_char - 0xA1 | ||
else: | ||
return -1 | ||
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class Big5DistributionAnalysis(CharDistributionAnalysis): | ||
def __init__(self): | ||
super(Big5DistributionAnalysis, self).__init__() | ||
self._char_to_freq_order = BIG5_CHAR_TO_FREQ_ORDER | ||
self._table_size = BIG5_TABLE_SIZE | ||
self.typical_distribution_ratio = BIG5_TYPICAL_DISTRIBUTION_RATIO | ||
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def get_order(self, byte_str): | ||
# for big5 encoding, we are interested | ||
# first byte range: 0xa4 -- 0xfe | ||
# second byte range: 0x40 -- 0x7e , 0xa1 -- 0xfe | ||
# no validation needed here. State machine has done that | ||
first_char, second_char = byte_str[0], byte_str[1] | ||
if first_char >= 0xA4: | ||
if second_char >= 0xA1: | ||
return 157 * (first_char - 0xA4) + second_char - 0xA1 + 63 | ||
else: | ||
return 157 * (first_char - 0xA4) + second_char - 0x40 | ||
else: | ||
return -1 | ||
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class SJISDistributionAnalysis(CharDistributionAnalysis): | ||
def __init__(self): | ||
super(SJISDistributionAnalysis, self).__init__() | ||
self._char_to_freq_order = JIS_CHAR_TO_FREQ_ORDER | ||
self._table_size = JIS_TABLE_SIZE | ||
self.typical_distribution_ratio = JIS_TYPICAL_DISTRIBUTION_RATIO | ||
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def get_order(self, byte_str): | ||
# for sjis encoding, we are interested | ||
# first byte range: 0x81 -- 0x9f , 0xe0 -- 0xfe | ||
# second byte range: 0x40 -- 0x7e, 0x81 -- oxfe | ||
# no validation needed here. State machine has done that | ||
first_char, second_char = byte_str[0], byte_str[1] | ||
if (first_char >= 0x81) and (first_char <= 0x9F): | ||
order = 188 * (first_char - 0x81) | ||
elif (first_char >= 0xE0) and (first_char <= 0xEF): | ||
order = 188 * (first_char - 0xE0 + 31) | ||
else: | ||
return -1 | ||
order = order + second_char - 0x40 | ||
if second_char > 0x7F: | ||
order = -1 | ||
return order | ||
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class EUCJPDistributionAnalysis(CharDistributionAnalysis): | ||
def __init__(self): | ||
super(EUCJPDistributionAnalysis, self).__init__() | ||
self._char_to_freq_order = JIS_CHAR_TO_FREQ_ORDER | ||
self._table_size = JIS_TABLE_SIZE | ||
self.typical_distribution_ratio = JIS_TYPICAL_DISTRIBUTION_RATIO | ||
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def get_order(self, byte_str): | ||
# for euc-JP encoding, we are interested | ||
# first byte range: 0xa0 -- 0xfe | ||
# second byte range: 0xa1 -- 0xfe | ||
# no validation needed here. State machine has done that | ||
char = byte_str[0] | ||
if char >= 0xA0: | ||
return 94 * (char - 0xA1) + byte_str[1] - 0xa1 | ||
else: | ||
return -1 |
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