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annotate libervia/backend/plugins/plugin_misc_jid_search.py @ 4202:b26339343076

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core: use a user specific directory for PID file: default location of pid file is now specific to logged user, this allow to run several instances of Libervia by different users on the same machine without PID conflicts.
author Goffi <goffi@goffi.org>
date Sun, 14 Jan 2024 17:48:02 +0100
parents 238e305f2306
children 0d7bb4df2343
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4108
238e305f2306 plugin JID Search: JID search plugin, first draft
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1 #!/usr/bin/env python3
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2
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3 # Libervia plugin to handle XMPP entities search
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4 # Copyright (C) 2009-2023 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
238e305f2306 plugin JID Search: JID search plugin, first draft
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 from collections import OrderedDict
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20 from dataclasses import dataclass, asdict
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21 import difflib
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22 from typing import List, Optional
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23
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24 from twisted.internet import defer
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25 from twisted.words.protocols.jabber import jid
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26
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27 from libervia.backend.core.constants import Const as C
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28 from libervia.backend.core.core_types import SatXMPPEntity
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29 from libervia.backend.core.i18n import _
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30 from libervia.backend.core.log import getLogger
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31 from libervia.backend.tools.common import data_format
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32
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33 log = getLogger(__name__)
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34
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35
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36 PLUGIN_INFO = {
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37 C.PI_NAME: "JID Search",
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38 C.PI_IMPORT_NAME: "JID_SEARCH",
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39 C.PI_TYPE: C.PLUG_TYPE_MISC,
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40 C.PI_MODES: C.PLUG_MODE_BOTH,
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41 C.PI_PROTOCOLS: [],
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42 C.PI_DEPENDENCIES: [],
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43 C.PI_RECOMMENDATIONS: [],
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44 C.PI_MAIN: "JidSearch",
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45 C.PI_HANDLER: "no",
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46 C.PI_DESCRIPTION: _("""Search for XMPP entities"""),
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47 }
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48 RATIO_CUTOFF = 0.6
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49 MAX_CACHE_SIZE = 10
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50
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51
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52 @dataclass
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53 class JidSearchItem:
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54 entity: jid.JID
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55 name: str = ""
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56 in_roster: bool = False
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57 groups: list[str] | None = None
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58 exact_match: bool = False
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59 relevance: float | None = None
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60
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61
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62 JidSearchCache = OrderedDict[str, list[JidSearchItem]]
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63
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64
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65 class JidSearch:
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66 def __init__(self, host) -> None:
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67 log.info(f"plugin {PLUGIN_INFO[C.PI_NAME]!r} initialization")
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68 self.host = host
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69 host.bridge.add_method(
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70 "jid_search",
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71 ".plugin",
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72 in_sign="sss",
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73 out_sign="s",
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74 method=self._search,
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75 async_=True,
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76 )
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77
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78 def profile_connecting(self, client: SatXMPPEntity) -> None:
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79 client._jid_search_cache = JidSearchCache()
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80
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81 def _search(self, search_term: str, options_s: str, profile: str) -> defer.Deferred:
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82 client = self.host.get_client(profile)
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83 d = defer.ensureDeferred(
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84 self.search(client, search_term, data_format.deserialise(options_s))
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85 )
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86 d.addCallback(
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87 lambda search_items: data_format.serialise([asdict(i) for i in search_items])
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88 )
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89 return d
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90
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91 async def search(
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92 self, client: SatXMPPEntity, search_term: str, options: Optional[dict] = None
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93 ) -> List[JidSearchItem]:
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94 """Searches for entities in various locations.
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95
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96 @param client: The SatXMPPEntity client where the search is to be performed.
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97 @param search_term: The query to be searched.
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98 @param options: Additional search options.
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99 @return: A list of matches found.
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100 """
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101 search_term = search_term.strip().lower()
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102 sequence_matcher = difflib.SequenceMatcher()
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103 sequence_matcher.set_seq1(search_term)
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104 # FIXME: cache can give different results due to the filtering mechanism (if a
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105 # cached search term match the beginning of current search term, its results a
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106 # re-used and filtered, and sometimes items can be missing in compraison to the
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107 # results without caching). This may need to be fixed.
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108 cache: JidSearchCache = client._jid_search_cache
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109
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110 # Look for a match in the cache
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111 for cache_key in cache:
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112 if search_term.startswith(cache_key):
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113 log.debug(
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114 f"Match found in cache for {search_term!r} in [{client.profile}]."
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115 )
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116 # If an exact match is found, return the results as is
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117 if search_term == cache_key:
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118 log.debug("Exact match found in cache, reusing results.")
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119 matches = cache[cache_key]
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120 else:
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121 # If only the beginning matches, filter the cache results
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122 log.debug("Prefix match found in cache, filtering results.")
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123 matches = []
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124 for jid_search_item in cache[cache_key]:
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125 self._process_matching(
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126 search_term, sequence_matcher, matches, jid_search_item
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127 )
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128 cache.move_to_end(cache_key)
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129 break
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130 else:
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131 # If no match is found in the cache, perform a new search
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132 matches = await self._perform_search(client, search_term, sequence_matcher)
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133 cache[search_term] = matches
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134 if len(cache) > MAX_CACHE_SIZE:
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135 cache.popitem(last=False)
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136
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137 # If no exact match is found, but the search term is a valid JID, we add the JID
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138 # as a result
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139 exact_match = any(m.exact_match for m in matches)
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140 if not exact_match and "@" in search_term:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
141 try:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
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142 search_jid = jid.JID(search_term)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
143 except jid.InvalidFormat:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
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144 pass
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
145 else:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
146 matches.append(
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
147 JidSearchItem(
238e305f2306 plugin JID Search: JID search plugin, first draft
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148 entity=search_jid,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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149 in_roster=False,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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150 exact_match=True,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
151 relevance=1,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
152 )
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
153 )
238e305f2306 plugin JID Search: JID search plugin, first draft
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parents:
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154
238e305f2306 plugin JID Search: JID search plugin, first draft
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155
238e305f2306 plugin JID Search: JID search plugin, first draft
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156 matches.sort(
238e305f2306 plugin JID Search: JID search plugin, first draft
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157 key=lambda item: (item.exact_match, item.relevance or 0, item.in_roster),
238e305f2306 plugin JID Search: JID search plugin, first draft
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158 reverse=True,
238e305f2306 plugin JID Search: JID search plugin, first draft
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159 )
238e305f2306 plugin JID Search: JID search plugin, first draft
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160
238e305f2306 plugin JID Search: JID search plugin, first draft
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161 return matches
238e305f2306 plugin JID Search: JID search plugin, first draft
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162
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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163 def _process_matching(
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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164 self,
238e305f2306 plugin JID Search: JID search plugin, first draft
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165 search_term: str,
238e305f2306 plugin JID Search: JID search plugin, first draft
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166 sequence_matcher: difflib.SequenceMatcher,
238e305f2306 plugin JID Search: JID search plugin, first draft
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167 matches: List[JidSearchItem],
238e305f2306 plugin JID Search: JID search plugin, first draft
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168 item: JidSearchItem,
238e305f2306 plugin JID Search: JID search plugin, first draft
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169 ) -> None:
238e305f2306 plugin JID Search: JID search plugin, first draft
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170 """Process matching of items
238e305f2306 plugin JID Search: JID search plugin, first draft
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171
238e305f2306 plugin JID Search: JID search plugin, first draft
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172 @param sequence_matcher: The sequence matcher to be used for the matching process.
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173 @param matches: A list where the match is to be appended.
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174 @param item: The item that to be matched.
238e305f2306 plugin JID Search: JID search plugin, first draft
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175 @return: True if it was an exact match
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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176 """
238e305f2306 plugin JID Search: JID search plugin, first draft
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177
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178 item_name_lower = item.name.lower()
238e305f2306 plugin JID Search: JID search plugin, first draft
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179 item_entity_lower = item.entity.full().lower()
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180
238e305f2306 plugin JID Search: JID search plugin, first draft
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181 if search_term in (item_name_lower, item_entity_lower):
238e305f2306 plugin JID Search: JID search plugin, first draft
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182 item.exact_match = True
238e305f2306 plugin JID Search: JID search plugin, first draft
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183 item.relevance = 1
238e305f2306 plugin JID Search: JID search plugin, first draft
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184 matches.append(item)
238e305f2306 plugin JID Search: JID search plugin, first draft
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parents:
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185 return
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
186
238e305f2306 plugin JID Search: JID search plugin, first draft
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diff changeset
187 item.exact_match = False
238e305f2306 plugin JID Search: JID search plugin, first draft
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diff changeset
188
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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diff changeset
189 sequence_matcher.set_seq2(item_name_lower)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
190 name_ratio = sequence_matcher.ratio()
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
191 if name_ratio >= RATIO_CUTOFF:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
192 item.relevance = name_ratio
238e305f2306 plugin JID Search: JID search plugin, first draft
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parents:
diff changeset
193 matches.append(item)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
194 return
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
195
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
196 sequence_matcher.set_seq2(item_entity_lower)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
197 jid_ratio = sequence_matcher.ratio()
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
198 if jid_ratio >= RATIO_CUTOFF:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
199 item.relevance = jid_ratio
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
200 matches.append(item)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
201 return
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
202
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
203 localpart = item.entity.user.lower() if item.entity.user else ""
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
204 if localpart:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
205 sequence_matcher.set_seq2(localpart)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
206 domain_ratio = sequence_matcher.ratio()
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
207 if domain_ratio >= RATIO_CUTOFF:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
208 item.relevance = domain_ratio
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
209 matches.append(item)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
210 return
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
211
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
212 if item.groups:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
213 group_ratios = []
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
214 for group in item.groups:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
215 sequence_matcher.set_seq2(group.lower())
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
216 group_ratios.append(sequence_matcher.ratio())
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
217 group_ratio = max(group_ratios)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
218 if group_ratio >= RATIO_CUTOFF:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
219 item.relevance = group_ratio
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
220 matches.append(item)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
221 return
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
222
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
223 domain = item.entity.host.lower()
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
224 sequence_matcher.set_seq2(domain)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
225 domain_ratio = sequence_matcher.ratio()
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
226 if domain_ratio >= RATIO_CUTOFF:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
227 item.relevance = domain_ratio
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
228 matches.append(item)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
229 return
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
230
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
231 async def _perform_search(
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
232 self,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
233 client: SatXMPPEntity,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
234 search_term: str,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
235 sequence_matcher: difflib.SequenceMatcher,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
236 ) -> List[JidSearchItem]:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
237 """Performs a new search when no match is found in the cache.
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
238
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
239 @param search_term: The query to be searched.
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
240 @param sequence_matcher: The SequenceMatcher object to be used for matching.
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
241 @return: A list of matches found.
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
242 """
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
243 matches = []
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
244
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
245 try:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
246 roster = client.roster
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
247 except AttributeError:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
248 # components have no roster
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
249 roster = []
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
250 else:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
251 roster = client.roster.get_items()
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
252
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
253 for roster_item in roster:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
254 jid_search_item = JidSearchItem(
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
255 entity=roster_item.entity,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
256 name=roster_item.name,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
257 in_roster=True,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
258 groups=list(roster_item.groups),
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
259 )
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
260
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
261 self._process_matching(
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
262 search_term, sequence_matcher, matches, jid_search_item
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
263 )
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
264
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
265 return matches