Mercurial > kallithea
annotate rhodecode/lib/indexers/__init__.py @ 4175:e9f6b533a8f6 kallithea-2.2.5-rebrand
Remove wrong/unnecessary/unfixable comment(s)
author | Bradley M. Kuhn <bkuhn@sfconservancy.org> |
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date | Wed, 02 Jul 2014 19:03:41 -0400 |
parents | ffd45b185016 |
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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 rhodecode.lib.indexers.__init__ |
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16 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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17 |
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18 Whoosh indexing module for RhodeCode |
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19 |
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20 :created_on: Aug 17, 2010 |
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21 :author: marcink |
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22 :copyright: (c) 2013 RhodeCode GmbH. |
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23 :license: GPLv3, see LICENSE for more details. |
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24 """ |
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25 |
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26 import os |
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27 import sys |
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28 import logging |
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29 from os.path import dirname as dn, join as jn |
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30 |
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31 # Add location of top level folder to sys.path |
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32 sys.path.append(dn(dn(dn(os.path.realpath(__file__))))) |
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33 |
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34 from whoosh.analysis import RegexTokenizer, LowercaseFilter, StopFilter |
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35 from whoosh.fields import TEXT, ID, STORED, NUMERIC, BOOLEAN, Schema, FieldType, DATETIME |
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36 from whoosh.formats import Characters |
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37 from whoosh.highlight import highlight as whoosh_highlight, HtmlFormatter, ContextFragmenter |
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39 |
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40 log = logging.getLogger(__name__) |
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41 |
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42 # CUSTOM ANALYZER wordsplit + lowercase filter |
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43 ANALYZER = RegexTokenizer(expression=r"\w+") | LowercaseFilter() |
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44 |
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45 #INDEX SCHEMA DEFINITION |
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46 SCHEMA = Schema( |
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47 fileid=ID(unique=True), |
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48 owner=TEXT(), |
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49 repository=TEXT(stored=True), |
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50 path=TEXT(stored=True), |
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51 content=FieldType(format=Characters(), analyzer=ANALYZER, |
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52 scorable=True, stored=True), |
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53 modtime=STORED(), |
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54 extension=TEXT(stored=True) |
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55 ) |
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56 |
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57 IDX_NAME = 'HG_INDEX' |
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58 FORMATTER = HtmlFormatter('span', between='\n<span class="break">...</span>\n') |
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59 FRAGMENTER = ContextFragmenter(200) |
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60 |
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61 CHGSETS_SCHEMA = Schema( |
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62 raw_id=ID(unique=True, stored=True), |
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63 date=NUMERIC(stored=True), |
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64 last=BOOLEAN(), |
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65 owner=TEXT(), |
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66 repository=ID(unique=True, stored=True), |
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67 author=TEXT(stored=True), |
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68 message=FieldType(format=Characters(), analyzer=ANALYZER, |
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69 scorable=True, stored=True), |
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70 parents=TEXT(), |
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71 added=TEXT(), |
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72 removed=TEXT(), |
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73 changed=TEXT(), |
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74 ) |
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75 |
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76 CHGSET_IDX_NAME = 'CHGSET_INDEX' |
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77 |
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78 # used only to generate queries in journal |
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79 JOURNAL_SCHEMA = Schema( |
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80 username=TEXT(), |
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81 date=DATETIME(), |
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82 action=TEXT(), |
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83 repository=TEXT(), |
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84 ip=TEXT(), |
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85 ) |
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86 |
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87 |
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88 class WhooshResultWrapper(object): |
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89 def __init__(self, search_type, searcher, matcher, highlight_items, |
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90 repo_location): |
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91 self.search_type = search_type |
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92 self.searcher = searcher |
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93 self.matcher = matcher |
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94 self.highlight_items = highlight_items |
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95 self.fragment_size = 200 |
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96 self.repo_location = repo_location |
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97 |
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98 @LazyProperty |
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99 def doc_ids(self): |
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100 docs_id = [] |
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101 while self.matcher.is_active(): |
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102 docnum = self.matcher.id() |
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103 chunks = [offsets for offsets in self.get_chunks()] |
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104 docs_id.append([docnum, chunks]) |
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105 self.matcher.next() |
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106 return docs_id |
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107 |
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108 def __str__(self): |
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109 return '<%s at %s>' % (self.__class__.__name__, len(self.doc_ids)) |
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110 |
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111 def __repr__(self): |
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112 return self.__str__() |
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113 |
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114 def __len__(self): |
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115 return len(self.doc_ids) |
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116 |
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117 def __iter__(self): |
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118 """ |
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119 Allows Iteration over results,and lazy generate content |
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120 |
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121 *Requires* implementation of ``__getitem__`` method. |
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122 """ |
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123 for docid in self.doc_ids: |
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124 yield self.get_full_content(docid) |
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125 |
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126 def __getitem__(self, key): |
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127 """ |
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128 Slicing of resultWrapper |
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129 """ |
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130 i, j = key.start, key.stop |
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131 |
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132 slices = [] |
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133 for docid in self.doc_ids[i:j]: |
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134 slices.append(self.get_full_content(docid)) |
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135 return slices |
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136 |
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137 def get_full_content(self, docid): |
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138 res = self.searcher.stored_fields(docid[0]) |
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139 log.debug('result: %s' % res) |
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140 if self.search_type == 'content': |
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141 full_repo_path = jn(self.repo_location, res['repository']) |
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142 f_path = res['path'].split(full_repo_path)[-1] |
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143 f_path = f_path.lstrip(os.sep) |
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144 content_short = self.get_short_content(res, docid[1]) |
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145 res.update({'content_short': content_short, |
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146 'content_short_hl': self.highlight(content_short), |
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147 'f_path': f_path |
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148 }) |
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149 elif self.search_type == 'path': |
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150 full_repo_path = jn(self.repo_location, res['repository']) |
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151 f_path = res['path'].split(full_repo_path)[-1] |
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152 f_path = f_path.lstrip(os.sep) |
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153 res.update({'f_path': f_path}) |
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154 elif self.search_type == 'message': |
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155 res.update({'message_hl': self.highlight(res['message'])}) |
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156 |
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157 log.debug('result: %s' % res) |
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158 |
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159 return res |
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160 |
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161 def get_short_content(self, res, chunks): |
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162 |
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163 return ''.join([res['content'][chunk[0]:chunk[1]] for chunk in chunks]) |
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164 |
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165 def get_chunks(self): |
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166 """ |
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167 Smart function that implements chunking the content |
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168 but not overlap chunks so it doesn't highlight the same |
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169 close occurrences twice. |
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170 """ |
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171 memory = [(0, 0)] |
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172 if self.matcher.supports('positions'): |
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173 for span in self.matcher.spans(): |
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174 start = span.startchar or 0 |
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175 end = span.endchar or 0 |
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176 start_offseted = max(0, start - self.fragment_size) |
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177 end_offseted = end + self.fragment_size |
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178 |
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179 if start_offseted < memory[-1][1]: |
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180 start_offseted = memory[-1][1] |
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181 memory.append((start_offseted, end_offseted,)) |
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182 yield (start_offseted, end_offseted,) |
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183 |
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184 def highlight(self, content, top=5): |
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185 if self.search_type not in ['content', 'message']: |
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186 return '' |
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187 hl = whoosh_highlight( |
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188 text=content, |
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189 terms=self.highlight_items, |
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190 analyzer=ANALYZER, |
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191 fragmenter=FRAGMENTER, |
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192 formatter=FORMATTER, |
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193 top=top |
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194 ) |
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195 return hl |