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annotate libervia/backend/plugins/plugin_misc_jid_search.py @ 4127:5fc26a6ef113

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author Goffi <goffi@goffi.org>
date Tue, 03 Oct 2023 16:27:51 +0200
parents 238e305f2306
children 0d7bb4df2343
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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:
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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:
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146 matches.append(
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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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
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149 in_roster=False,
238e305f2306 plugin JID Search: JID search plugin, first draft
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150 exact_match=True,
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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151 relevance=1,
238e305f2306 plugin JID Search: JID search plugin, first draft
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diff changeset
152 )
238e305f2306 plugin JID Search: JID search plugin, first draft
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153 )
238e305f2306 plugin JID Search: JID search plugin, first draft
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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),
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158 reverse=True,
238e305f2306 plugin JID Search: JID search plugin, first draft
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159 )
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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
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163 def _process_matching(
238e305f2306 plugin JID Search: JID search plugin, first draft
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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.
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175 @return: True if it was an exact match
238e305f2306 plugin JID Search: JID search plugin, first draft
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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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185 return
238e305f2306 plugin JID Search: JID search plugin, first draft
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diff changeset
186
238e305f2306 plugin JID Search: JID search plugin, first draft
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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
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189 sequence_matcher.set_seq2(item_name_lower)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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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>
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diff changeset
192 item.relevance = name_ratio
238e305f2306 plugin JID Search: JID search plugin, first draft
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diff changeset
193 matches.append(item)
238e305f2306 plugin JID Search: JID search plugin, first draft
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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
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diff changeset
196 sequence_matcher.set_seq2(item_entity_lower)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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diff changeset
197 jid_ratio = sequence_matcher.ratio()
238e305f2306 plugin JID Search: JID search plugin, first draft
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diff changeset
198 if jid_ratio >= RATIO_CUTOFF:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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diff changeset
199 item.relevance = jid_ratio
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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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>
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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>
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diff changeset
204 if localpart:
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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diff changeset
205 sequence_matcher.set_seq2(localpart)
238e305f2306 plugin JID Search: JID search plugin, first draft
Goffi <goffi@goffi.org>
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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