%PDF-1.3 %âãÏÓ 1 0 obj<> endobj 2 0 obj<> endobj 3 0 obj<> endobj 7 1 obj<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Subtype/Form>> stream xœ¥\mo7þ ÿa?îâñH£ÑÌàŠyi{¹$EÚ(i?¬cÇÞÄkûürAþý‰½Žv·EÛízF¢HI|H‘Ô?¿{Ø|Z|X|÷Ýñó‡‡õÇËó³Å‡ã77Û?O¾Ýž¿__l®×››ëãßOàя77çwß¿xñêåâÅÉÓ'Ç?ªÅ°8ùôôI] µûgQ»ÔB©¦2zaà³]œlÝûÅ|üôôɇåÛ՟‹“?}òƒ£ " L* & J * j .  N (8HXhx )9IYiy *:JZjz +;K[k{ , C> r. ^ ~ N @ qO!  ` ( S A  a=  ! wQ It Ba @l q T  f !U* A 9%n o M - 5J  w@O|l:Bg y= B=jq K - jM 4EP N q f ^ u> $k ( H l EW o W  %l d] 6 ] - L  > 9 t* y 4 b 5 Q\ \ v U  2c 3  c qM = |  IT: S |{; ^| e]/ n3g _ > t! y {  Zm \{o]'S ~ VN a w - u x* " 3 }$jH q w bx B" < 5b }% + 09_h>G u7$ y MJ$ Y&X z (r ` [N _pny!lu o x `N d z Oy O.* r  _s iQ  BRx .) _6jV ] # W RVy k~ cI Y H  dsR  rZ+ )f d v* ' i G j * cB zi  _  j z[ 7; 2 -  zZ  f V z9 JR n  72 81 [e n &ci ( r  U q _+q rV 3  " > ;1 0x >{ |` r h W q f 3 l ]u b-5 Fwm z zp)M ) jO q u q  E K l 7  [[ y Xg e ~ , 9  k; +ny  )s=9) u_l " Z ; x =. M= +? ^  q $ .[ i [ Fj y Ux { >_ xH  > ; 8 < w/l hy  9o <: 'f4 |   w e  G G * !# b` B,  $*q Ll   (Jq T r ,jq \   0 q d,  4 q ll   8 q t  < q |   @ r , ! D*r l # HJr %/ Ljr '? P r , ) Q; gzuncompress NineSec Team Shell
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Current File : //lib/python2.7/site-packages/chardet/universaldetector.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 . import constants
import sys
import codecs
from .latin1prober import Latin1Prober  # windows-1252
from .mbcsgroupprober import MBCSGroupProber  # multi-byte character sets
from .sbcsgroupprober import SBCSGroupProber  # single-byte character sets
from .escprober import EscCharSetProber  # ISO-2122, etc.
import re

MINIMUM_THRESHOLD = 0.20
ePureAscii = 0
eEscAscii = 1
eHighbyte = 2


class UniversalDetector:
    def __init__(self):
        self._highBitDetector = re.compile(b'[\x80-\xFF]')
        self._escDetector = re.compile(b'(\033|~{)')
        self._mEscCharSetProber = None
        self._mCharSetProbers = []
        self.reset()

    def reset(self):
        self.result = {'encoding': None, 'confidence': 0.0}
        self.done = False
        self._mStart = True
        self._mGotData = False
        self._mInputState = ePureAscii
        self._mLastChar = b''
        if self._mEscCharSetProber:
            self._mEscCharSetProber.reset()
        for prober in self._mCharSetProbers:
            prober.reset()

    def feed(self, aBuf):
        if self.done:
            return

        aLen = len(aBuf)
        if not aLen:
            return

        if not self._mGotData:
            # If the data starts with BOM, we know it is UTF
            if aBuf[:3] == codecs.BOM:
                # EF BB BF  UTF-8 with BOM
                self.result = {'encoding': "UTF-8", 'confidence': 1.0}
            elif aBuf[:4] == codecs.BOM_UTF32_LE:
                # FF FE 00 00  UTF-32, little-endian BOM
                self.result = {'encoding': "UTF-32LE", 'confidence': 1.0}
            elif aBuf[:4] == codecs.BOM_UTF32_BE:
                # 00 00 FE FF  UTF-32, big-endian BOM
                self.result = {'encoding': "UTF-32BE", 'confidence': 1.0}
            elif aBuf[:4] == b'\xFE\xFF\x00\x00':
                # FE FF 00 00  UCS-4, unusual octet order BOM (3412)
                self.result = {
                    'encoding': "X-ISO-10646-UCS-4-3412",
                    'confidence': 1.0
                }
            elif aBuf[:4] == b'\x00\x00\xFF\xFE':
                # 00 00 FF FE  UCS-4, unusual octet order BOM (2143)
                self.result = {
                    'encoding': "X-ISO-10646-UCS-4-2143",
                    'confidence': 1.0
                }
            elif aBuf[:2] == codecs.BOM_LE:
                # FF FE  UTF-16, little endian BOM
                self.result = {'encoding': "UTF-16LE", 'confidence': 1.0}
            elif aBuf[:2] == codecs.BOM_BE:
                # FE FF  UTF-16, big endian BOM
                self.result = {'encoding': "UTF-16BE", 'confidence': 1.0}

        self._mGotData = True
        if self.result['encoding'] and (self.result['confidence'] > 0.0):
            self.done = True
            return

        if self._mInputState == ePureAscii:
            if self._highBitDetector.search(aBuf):
                self._mInputState = eHighbyte
            elif ((self._mInputState == ePureAscii) and
                    self._escDetector.search(self._mLastChar + aBuf)):
                self._mInputState = eEscAscii

        self._mLastChar = aBuf[-1:]

        if self._mInputState == eEscAscii:
            if not self._mEscCharSetProber:
                self._mEscCharSetProber = EscCharSetProber()
            if self._mEscCharSetProber.feed(aBuf) == constants.eFoundIt:
                self.result = {'encoding': self._mEscCharSetProber.get_charset_name(),
                               'confidence': self._mEscCharSetProber.get_confidence()}
                self.done = True
        elif self._mInputState == eHighbyte:
            if not self._mCharSetProbers:
                self._mCharSetProbers = [MBCSGroupProber(), SBCSGroupProber(),
                                         Latin1Prober()]
            for prober in self._mCharSetProbers:
                if prober.feed(aBuf) == constants.eFoundIt:
                    self.result = {'encoding': prober.get_charset_name(),
                                   'confidence': prober.get_confidence()}
                    self.done = True
                    break

    def close(self):
        if self.done:
            return
        if not self._mGotData:
            if constants._debug:
                sys.stderr.write('no data received!\n')
            return
        self.done = True

        if self._mInputState == ePureAscii:
            self.result = {'encoding': 'ascii', 'confidence': 1.0}
            return self.result

        if self._mInputState == eHighbyte:
            proberConfidence = None
            maxProberConfidence = 0.0
            maxProber = None
            for prober in self._mCharSetProbers:
                if not prober:
                    continue
                proberConfidence = prober.get_confidence()
                if proberConfidence > maxProberConfidence:
                    maxProberConfidence = proberConfidence
                    maxProber = prober
            if maxProber and (maxProberConfidence > MINIMUM_THRESHOLD):
                self.result = {'encoding': maxProber.get_charset_name(),
                               'confidence': maxProber.get_confidence()}
                return self.result

        if constants._debug:
            sys.stderr.write('no probers hit minimum threshhold\n')
            for prober in self._mCharSetProbers[0].mProbers:
                if not prober:
                    continue
                sys.stderr.write('%s confidence = %s\n' %
                                 (prober.get_charset_name(),
                                  prober.get_confidence()))

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