| ######################## 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 ######################### |
| |
| from . import constants |
| import sys |
| from .charsetprober import CharSetProber |
| |
| |
| class CharSetGroupProber(CharSetProber): |
| def __init__(self): |
| CharSetProber.__init__(self) |
| self._mActiveNum = 0 |
| self._mProbers = [] |
| self._mBestGuessProber = None |
| |
| def reset(self): |
| CharSetProber.reset(self) |
| self._mActiveNum = 0 |
| for prober in self._mProbers: |
| if prober: |
| prober.reset() |
| prober.active = True |
| self._mActiveNum += 1 |
| self._mBestGuessProber = None |
| |
| def get_charset_name(self): |
| if not self._mBestGuessProber: |
| self.get_confidence() |
| if not self._mBestGuessProber: |
| return None |
| # self._mBestGuessProber = self._mProbers[0] |
| return self._mBestGuessProber.get_charset_name() |
| |
| def feed(self, aBuf): |
| for prober in self._mProbers: |
| if not prober: |
| continue |
| if not prober.active: |
| continue |
| st = prober.feed(aBuf) |
| if not st: |
| continue |
| if st == constants.eFoundIt: |
| self._mBestGuessProber = prober |
| return self.get_state() |
| elif st == constants.eNotMe: |
| prober.active = False |
| self._mActiveNum -= 1 |
| if self._mActiveNum <= 0: |
| self._mState = constants.eNotMe |
| return self.get_state() |
| return self.get_state() |
| |
| def get_confidence(self): |
| st = self.get_state() |
| if st == constants.eFoundIt: |
| return 0.99 |
| elif st == constants.eNotMe: |
| return 0.01 |
| bestConf = 0.0 |
| self._mBestGuessProber = None |
| for prober in self._mProbers: |
| if not prober: |
| continue |
| if not prober.active: |
| if constants._debug: |
| sys.stderr.write(prober.get_charset_name() |
| + ' not active\n') |
| continue |
| cf = prober.get_confidence() |
| if constants._debug: |
| sys.stderr.write('%s confidence = %s\n' % |
| (prober.get_charset_name(), cf)) |
| if bestConf < cf: |
| bestConf = cf |
| self._mBestGuessProber = prober |
| if not self._mBestGuessProber: |
| return 0.0 |
| return bestConf |
| # else: |
| # self._mBestGuessProber = self._mProbers[0] |
| # return self._mBestGuessProber.get_confidence() |
