Mercurial > kallithea

annotate kallithea/lib/indexers/__init__.py @ 5997:b313d735d9c8

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cleanup: get rid of jn as shortcut for os.path.join It is not used in that many places so it is better to be explicit and use os.path.join . Discussed on https://bitbucket.org/domruf/kallithea/commits/1da05f42bca3f7042c444fda13a1ae1f6b9c300f#comment-2948124 . Modified by Mads Kiilerich.
author domruf <dominikruf@gmail.com>
date Sun, 12 Jun 2016 21:21:43 +0200
parents 0ad053c172fa
children 037efd94e955
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # -*- coding: utf-8 -*-
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2 # This program is free software: you can redistribute it and/or modify
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3 # it under the terms of the GNU General Public License as published by
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4 # the Free Software Foundation, either version 3 of the License, or
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5 # (at your option) any later version.
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6 #
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7 # This program is distributed in the hope that it will be useful,
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8 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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9 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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10 # GNU General Public License for more details.
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11 #
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12 # You should have received a copy of the GNU General Public License
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13 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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14 """
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15 kallithea.lib.indexers
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16 ~~~~~~~~~~~~~~~~~~~~~~
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17
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18 Whoosh indexing module for Kallithea
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19
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20 This file was forked by the Kallithea project in July 2014.
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21 Original author and date, and relevant copyright and licensing information is below:
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22 :created_on: Aug 17, 2010
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23 :author: marcink
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24 :copyright: (c) 2013 RhodeCode GmbH, and others.
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25 :license: GPLv3, see LICENSE.md for more details.
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26 """
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27
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28 import os
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29 import sys
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30 import logging
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31 from os.path import dirname as dn
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32
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33 # Add location of top level folder to sys.path
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34 sys.path.append(dn(dn(dn(os.path.realpath(__file__)))))
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35
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36 from whoosh.analysis import RegexTokenizer, LowercaseFilter
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37 from whoosh.fields import TEXT, ID, STORED, NUMERIC, BOOLEAN, Schema, FieldType, DATETIME
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38 from whoosh.formats import Characters
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39 from whoosh.highlight import highlight as whoosh_highlight, HtmlFormatter, ContextFragmenter
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40 from kallithea.lib.utils2 import LazyProperty
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41
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42 log = logging.getLogger(__name__)
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43
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44 # CUSTOM ANALYZER wordsplit + lowercase filter
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45 ANALYZER = RegexTokenizer(expression=r"\w+") | LowercaseFilter()
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46
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47 #INDEX SCHEMA DEFINITION
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48 SCHEMA = Schema(
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49 fileid=ID(unique=True),
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50 owner=TEXT(),
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51 repository=TEXT(stored=True),
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52 path=TEXT(stored=True),
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53 content=FieldType(format=Characters(), analyzer=ANALYZER,
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54 scorable=True, stored=True),
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55 modtime=STORED(),
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56 extension=TEXT(stored=True)
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57 )
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58
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59 IDX_NAME = 'HG_INDEX'
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60 FORMATTER = HtmlFormatter('span', between='\n<span class="break">...</span>\n')
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61 FRAGMENTER = ContextFragmenter(200)
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62
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63 CHGSETS_SCHEMA = Schema(
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64 raw_id=ID(unique=True, stored=True),
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65 date=NUMERIC(stored=True),
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66 last=BOOLEAN(),
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67 owner=TEXT(),
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68 repository=ID(unique=True, stored=True),
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69 author=TEXT(stored=True),
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70 message=FieldType(format=Characters(), analyzer=ANALYZER,
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71 scorable=True, stored=True),
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72 parents=TEXT(),
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73 added=TEXT(),
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74 removed=TEXT(),
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75 changed=TEXT(),
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76 )
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77
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78 CHGSET_IDX_NAME = 'CHGSET_INDEX'
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79
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80 # used only to generate queries in journal
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81 JOURNAL_SCHEMA = Schema(
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82 username=TEXT(),
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83 date=DATETIME(),
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84 action=TEXT(),
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85 repository=TEXT(),
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86 ip=TEXT(),
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87 )
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88
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89
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90 class WhooshResultWrapper(object):
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91 def __init__(self, search_type, searcher, matcher, highlight_items,
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92 repo_location):
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93 self.search_type = search_type
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94 self.searcher = searcher
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95 self.matcher = matcher
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96 self.highlight_items = highlight_items
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97 self.fragment_size = 200
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98 self.repo_location = repo_location
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99
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100 @LazyProperty
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101 def doc_ids(self):
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102 docs_id = []
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103 while self.matcher.is_active():
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104 docnum = self.matcher.id()
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105 chunks = [offsets for offsets in self.get_chunks()]
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106 docs_id.append([docnum, chunks])
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107 self.matcher.next()
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108 return docs_id
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109
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110 def __str__(self):
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111 return '<%s at %s>' % (self.__class__.__name__, len(self.doc_ids))
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112
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113 def __repr__(self):
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114 return self.__str__()
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115
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116 def __len__(self):
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117 return len(self.doc_ids)
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118
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119 def __iter__(self):
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120 """
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121 Allows Iteration over results,and lazy generate content
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122
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123 *Requires* implementation of ``__getitem__`` method.
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124 """
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125 for docid in self.doc_ids:
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126 yield self.get_full_content(docid)
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127
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128 def __getitem__(self, key):
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129 """
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130 Slicing of resultWrapper
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131 """
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132 i, j = key.start, key.stop
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133
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134 slices = []
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135 for docid in self.doc_ids[i:j]:
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136 slices.append(self.get_full_content(docid))
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137 return slices
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138
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139 def get_full_content(self, docid):
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140 res = self.searcher.stored_fields(docid[0])
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141 log.debug('result: %s', res)
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142 if self.search_type == 'content':
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143 full_repo_path = os.path.join(self.repo_location, res['repository'])
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144 f_path = res['path'].split(full_repo_path)[-1]
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145 f_path = f_path.lstrip(os.sep)
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146 content_short = self.get_short_content(res, docid[1])
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147 res.update({'content_short': content_short,
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148 'content_short_hl': self.highlight(content_short),
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149 'f_path': f_path
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150 })
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151 elif self.search_type == 'path':
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152 full_repo_path = os.path.join(self.repo_location, res['repository'])
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153 f_path = res['path'].split(full_repo_path)[-1]
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154 f_path = f_path.lstrip(os.sep)
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155 res.update({'f_path': f_path})
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156 elif self.search_type == 'message':
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157 res.update({'message_hl': self.highlight(res['message'])})
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158
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159 log.debug('result: %s', res)
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160
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161 return res
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162
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163 def get_short_content(self, res, chunks):
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164
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165 return ''.join([res['content'][chunk[0]:chunk[1]] for chunk in chunks])
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166
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167 def get_chunks(self):
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168 """
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169 Smart function that implements chunking the content
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170 but not overlap chunks so it doesn't highlight the same
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171 close occurrences twice.
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172 """
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173 memory = [(0, 0)]
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174 if self.matcher.supports('positions'):
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175 for span in self.matcher.spans():
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176 start = span.startchar or 0
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177 end = span.endchar or 0
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178 start_offseted = max(0, start - self.fragment_size)
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179 end_offseted = end + self.fragment_size
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180
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181 if start_offseted < memory[-1][1]:
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182 start_offseted = memory[-1][1]
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183 memory.append((start_offseted, end_offseted,))
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184 yield (start_offseted, end_offseted,)
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185
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186 def highlight(self, content, top=5):
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187 if self.search_type not in ['content', 'message']:
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188 return ''
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189 hl = whoosh_highlight(
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190 text=content,
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191 terms=self.highlight_items,
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192 analyzer=ANALYZER,
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193 fragmenter=FRAGMENTER,
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194 formatter=FORMATTER,
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195 top=top
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196 )
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197 return hl