mirror of https://github.com/evilhero/mylar
87 lines
3.1 KiB
Python
87 lines
3.1 KiB
Python
|
######################## BEGIN LICENSE BLOCK ########################
|
||
|
|
# The Original Code is mozilla.org 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 #########################
|
||
|
|
|
||
|
|
from . import constants
|
||
|
|
from .escsm import (HZSMModel, ISO2022CNSMModel, ISO2022JPSMModel,
|
||
|
|
ISO2022KRSMModel)
|
||
|
|
from .charsetprober import CharSetProber
|
||
|
|
from .codingstatemachine import CodingStateMachine
|
||
|
|
from .compat import wrap_ord
|
||
|
|
|
||
|
|
|
||
|
|
class EscCharSetProber(CharSetProber):
|
||
|
|
def __init__(self):
|
||
|
|
CharSetProber.__init__(self)
|
||
|
|
self._mCodingSM = [
|
||
|
|
CodingStateMachine(HZSMModel),
|
||
|
|
CodingStateMachine(ISO2022CNSMModel),
|
||
|
|
CodingStateMachine(ISO2022JPSMModel),
|
||
|
|
CodingStateMachine(ISO2022KRSMModel)
|
||
|
|
]
|
||
|
|
self.reset()
|
||
|
|
|
||
|
|
def reset(self):
|
||
|
|
CharSetProber.reset(self)
|
||
|
|
for codingSM in self._mCodingSM:
|
||
|
|
if not codingSM:
|
||
|
|
continue
|
||
|
|
codingSM.active = True
|
||
|
|
codingSM.reset()
|
||
|
|
self._mActiveSM = len(self._mCodingSM)
|
||
|
|
self._mDetectedCharset = None
|
||
|
|
|
||
|
|
def get_charset_name(self):
|
||
|
|
return self._mDetectedCharset
|
||
|
|
|
||
|
|
def get_confidence(self):
|
||
|
|
if self._mDetectedCharset:
|
||
|
|
return 0.99
|
||
|
|
else:
|
||
|
|
return 0.00
|
||
|
|
|
||
|
|
def feed(self, aBuf):
|
||
|
|
for c in aBuf:
|
||
|
|
# PY3K: aBuf is a byte array, so c is an int, not a byte
|
||
|
|
for codingSM in self._mCodingSM:
|
||
|
|
if not codingSM:
|
||
|
|
continue
|
||
|
|
if not codingSM.active:
|
||
|
|
continue
|
||
|
|
codingState = codingSM.next_state(wrap_ord(c))
|
||
|
|
if codingState == constants.eError:
|
||
|
|
codingSM.active = False
|
||
|
|
self._mActiveSM -= 1
|
||
|
|
if self._mActiveSM <= 0:
|
||
|
|
self._mState = constants.eNotMe
|
||
|
|
return self.get_state()
|
||
|
|
elif codingState == constants.eItsMe:
|
||
|
|
self._mState = constants.eFoundIt
|
||
|
|
self._mDetectedCharset = codingSM.get_coding_state_machine() # nopep8
|
||
|
|
return self.get_state()
|
||
|
|
|
||
|
|
return self.get_state()
|