How to use _pattern_matches method in Slash

Best Python code snippet using slash

decrypter.py

Source:decrypter.py

1import copy2import logging3from typing import List4from decryptoquote.cypherlettermap import CypherLetterMap5from decryptoquote.helpers import string_to_caps_words6from decryptoquote.wordpatterns import WordPatterns7class Decrypter:8    """9    This class performs Cryptoquote decryption using a version of backtracking10    search.11    This version of backtracking search uses word pattern matches, as described12    in :class:`WordPatterns`. Decrypter determines all matches for each word in13    the coded text. It also maintains a master index value :math:`i` and an14    index value for each word :math:`j_x`. The algorithm works as follows:15    1. Initially, set :math:`i` and all :math:`j_x` to 016    2. Select the "match word" :math:`j_i` for word :math:`i`17    3. Check that this match word is consistent with the current cypher-letter18      map (i.e. any coded letters, if decoded in the map, should decode to the19      same letter in the match word). If it is consistent, complete the "good20      match" steps. If not, complete the "bad match" steps.21    4. "Good match" steps22        a. Update the cypher letter map using the match word.23        b. Increment :math:`i`24        c. If :math:`i` >= number of words in the coded text, decrypting was25           successful; return `True`.26        d. Otherwise, return to step 2 and repeat.27    5. "Bad match" steps28        a. Increment :math:`j_i`29        b. If :math:`j_i` >= number of matches for word :math:`i`, follow the30          "backtrack" steps.31        c. Otherwise, return to step 2 and repeat.32    6. "Backtrack" steps33        a. Remove the match word from the cypher-letter map34        b. Set :math:`j_i` to 035        c. Decrement :math:`i`36        d. Repeat "bad match" steps with new :math:`i`37        e. If :math:`i` < 0, no decoded text can be found; return `False`.38        f. Otherwise, return to step 2 and repeat.39    :param coded_text: the text to decode40    :param cypher_letter_map: CypherLetterMap to use. This map will be cleared41      before use.42    :param word_patterns: WordPatterns to use.43    .. attribute:: cypher_letter_map44        :type: CypherLetterMap45        :value: blank CypherLetterMap46            The mapping from coded cypher letters to decoded letters.47    """48    def __init__(49        self,50        coded_text: str,51        cypher_letter_map: CypherLetterMap,52        word_patterns: WordPatterns,53    ):54        self.cypher_letter_map = cypher_letter_map55        self.cypher_letter_map.clear()56        self._coded_words: List[str] = string_to_caps_words(coded_text)57        self._pattern_matches: List[List[str]] = []58        for coded_word in self._coded_words:59            matches = word_patterns.code_word_to_match_words(coded_word)60            self._pattern_matches.append(matches)61        self._word_index = 062        self._match_indices = [0 for _ in self._coded_words]63    def decrypt(self, continue_decrypting: bool = False) -> bool:64        """65        Decodes the cypher, returning a success value.66        The cypher-letter map can now be used to decode the Cryptoquote text.67        :return: `True` if decoding was successful68        """69        logging.debug("Starting new decryption...")70        word_count: int = len(self._coded_words)71        logging.debug(word_count)72        backtracking: bool = False73        if continue_decrypting:74            logging.debug("Continuing after last solve")75            backtracking = self._bad_match_logic()76        while 0 <= self._word_index < word_count:77            if backtracking:78                backtracking = self._bad_match_logic()79            else:80                current_match_words: List[str] = self._pattern_matches[81                    self._word_index]82                if len(current_match_words) == 0:83                    return False84                current_match_word: str = current_match_words[85                    self._match_indices[self._word_index]]86                current_coded_word: str = self._coded_words[self._word_index]87                if self.cypher_letter_map.does_word_coding_work(88                    current_coded_word, current_match_word):89                    logging.debug(90                        f"Testing word {self._word_index} == "91                        f"{current_match_word}, works")92                    self._good_match_logic(current_coded_word,93                                           current_match_word)94                else:95                    logging.debug(96                        f"Testing word {self._word_index} == "97                        f"{current_match_word}, doesn't work")98                    backtracking = self._bad_match_logic()99        if self._word_index < 0:100            logging.debug("decrypt failed")101            return False102        logging.debug("decrypt succeeded")103        return True104    def decrypt_all(self) -> List[CypherLetterMap]:105        """106        Finds all valid solutions for the cypher.107        :return: list of cypher-letter maps for all valid solutions.108        """109        logging.debug("Starting new full decryption...")110        solutions: List[CypherLetterMap] = []111        keep_going = self.decrypt()112        while keep_going:113            solution_map = copy.deepcopy(self.cypher_letter_map)114            solutions.append(solution_map)115            self.cypher_letter_map.remove_last_word_from_mapping()116            self._word_index -= 1117            keep_going = self.decrypt(continue_decrypting=True)118        return solutions119    def _is_match_good(120        self,121        current_coded_word: str,122        current_match_word: str123    ) -> bool:124        current_best_decode: str = \125            self.cypher_letter_map.decode(current_coded_word)126        for letter_pair in zip(current_best_decode, current_match_word):127            decode_letter, match_letter = letter_pair128            if decode_letter == '_':129                continue130            if decode_letter != match_letter:131                return False132        return True133    def _good_match_logic(134        self,135        current_coded_word: str,136        current_match_word: str137    ):138        self.cypher_letter_map.add_word_to_mapping(current_coded_word,139                                                   current_match_word)140        self._word_index += 1141    def _bad_match_logic(142        self143    ) -> bool:144        self._match_indices[self._word_index] += 1145        match_count: int = len(self._pattern_matches[self._word_index])146        if self._match_indices[self._word_index] >= match_count:147            self.cypher_letter_map.remove_last_word_from_mapping()148            self._match_indices[self._word_index] = 0149            self._word_index -= 1150            return True...

bot.py

Source:bot.py

1import re2from sqlalchemy import create_engine3from sqlalchemy.ext.declarative import declarative_base4from sqlalchemy.orm import scoped_session, sessionmaker5from sqlalchemy.schema import MetaData6from tautbot.base import Base7from tautbot.client import slack8from tautbot.util import database9from tautbot.util.events import Event10class Tautbot(Base):11    def __init__(self, slack_client=None, plugin_registry=None):12        super().__init__()13        self.slack_client = slack_client14        self.plugin_registry = plugin_registry15        self.userlist = []16        # setup db17        db_path = self.conf.get('database', 'sqlite:///tautbot.db')18        self.db_engine = create_engine(db_path)19        self.db_factory = sessionmaker(bind=self.db_engine)20        self.db_session = scoped_session(self.db_factory)21        self.db_metadata = MetaData()22        self.db_base = declarative_base(metadata=self.db_metadata, bind=self.db_engine)23        self.db = self.db_session()24        # set botvars so plugins can access when loading25        database.metadata = self.db_metadata26        database.base = self.db_base27        database.db = self.db28        if slack_client:29            slack.slack_client = slack_client30        self.logger.debug("Database system initialised.")31    def parse_slack_output(self, output_lines):32        """33          Find command or pattern34            The Slack Real Time Messaging API is an events firehose.35            this parsing function returns None unless a message is36            directed at the Bot, based on its ID.37        """38        if output_lines and len(output_lines) > 0:39            for output in output_lines:40                if output and 'text' in output:41                    _prefix_matches = re.match('^{}'.format(self.conf['bot_prefix']), output['text'])42                    _bot_matches = re.match('^{}'.format(self.conf['at_bot']), output['text'])43                    patterns = '(?:({}))'.format('|'.join([p[0] for p in self.plugin_registry.patterns]))44                    _pattern_matches = re.match(patterns, output['text'])45                    _channel = output['channel']46                    Event('pre_parse_slack_output', output, _channel)47                    self.logger.debug("{}".format(output))48                    if _pattern_matches:49                        _pattern = _pattern_matches.group(0)50                        Event('channel_pattern_matched', pattern=_pattern, channel=_channel, text=output['text'], output=output)51                    if _bot_matches or _prefix_matches:52                        if _bot_matches:53                            # text after the @ mention, whitespace removed54                            _message = output['text'].split(self.conf['at_bot'])[1].strip().lower()55                            _command = _message.split(" ")[0]56                        elif _prefix_matches:57                            # text after the @ mention, whitespace removed58                            _message = output['text'].split(self.conf['bot_prefix'])[1].strip().lower()59                            _command = _message.split(" ")[0]60                        else:61                            self.logger.error('The impossible happened')62                            raise Warning("I have no idea what happened")63                        self.logger.info('command "{}" called by user: {}'.format(_command, output['user']))64                        self.route_command(_channel, _command, _message, output)65    def route_command(self, _channel, _command, _message, output):66        """67          Figure out what type of command it is68        """69        if _command in {k for d in self.plugin_registry.commands for k in d}:70            _message_parts = _message.split(" ")71            if len(_message_parts) > 1 and _message_parts[1] in self.plugin_registry.subcommands:72                Event('channel_subcommand', command=_command, channel=_channel, text=_message, output=output)73            else:74                Event('channel_command', command=_command, channel=_channel, text=_message, output=output)75        elif _command in [p[0] for p in self.plugin_registry.aliases]:76            self.logger.info('command "{}" recognized as alias'.format(_command))...

server.py

Source:server.py

...11        self.pattern_middlewares = PatternMiddlewares()12        self.request_handlers = RequestHandlers()13        self.server_class = server_class14        self.server = None15    def _pattern_matches(self, pattern: str, path: str) -> bool:16        # TODO: implement a matching function that actually does something17        return pattern == path or pattern == "*"18    def _get_middlewares(self, path: str) -> List[RequestHandler]: 19        middlewares: List[RequestHandler] = []20        for key, value in self.pattern_middlewares.items():21            if self._pattern_matches(key, path):22                middlewares.extend(value)23        return middlewares24    25    def _get_handler(self, path: str, method: HttpMethod) -> Union[None, Tuple[RequestHandler, str]]:26        for key, value in self.request_handlers[method].items():27            if self._pattern_matches(key, path):28                return value, key29        return None30    def _generate_http_request_handler(self):31        class Handler(BaseHTTPRequestHandler):32            def _generate_request(_self, pattern: str) -> Request:33                return Request(pattern, _self)34            def _generate_response(_self) -> Response:35                return Response(_self)36            37            def _handle_method(_self, method: HttpMethod):38                middlewares = self._get_middlewares(_self.path)39                handlerPattern = self._get_handler(_self.path, method)40                if handlerPattern is None:41                    _self.close_connection = True...

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