First commit

1 files changed, 145 insertions, 0 deletions

diff --git a/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/latin1prober.py b/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/latin1prober.py
new file mode 100644
index 0000000..7c37520
--- /dev/null
+++ b/venv/lib/python3.7/site-packages/pip-10.0.1-py3.7.egg/pip/_vendor/chardet/latin1prober.py
@@ -0,0 +1,145 @@
+######################## 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