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annotate rhodecode/lib/indexers/__init__.py @ 1203:6832ef664673 beta

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source code cleanup: remove trailing white space, normalize file endings
author Marcin Kuzminski <marcin@python-works.com>
date Sun, 03 Apr 2011 18:23:15 +0200
parents 02a7f263a849
children a671db5bdd58
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 """
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3 rhodecode.lib.indexers.__init__
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4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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5
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6 Whoosh indexing module for RhodeCode
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7
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8 :created_on: Aug 17, 2010
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9 :author: marcink
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10 :copyright: (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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11 :license: GPLv3, see COPYING for more details.
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12 """
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13 # This program is free software; you can redistribute it and/or
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14 # modify it under the terms of the GNU General Public License
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15 # as published by the Free Software Foundation; version 2
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16 # of the License or (at your opinion) any later version of the license.
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17 #
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18 # This program is distributed in the hope that it will be useful,
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19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 # GNU General Public License for more details.
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22 #
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23 # You should have received a copy of the GNU General Public License
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24 # along with this program; if not, write to the Free Software
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25 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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26 # MA 02110-1301, USA.
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27 import os
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28 import sys
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29 import traceback
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30 from os.path import dirname as dn, join as jn
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31
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32 #to get the rhodecode import
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33 sys.path.append(dn(dn(dn(os.path.realpath(__file__)))))
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34
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35 from string import strip
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36
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37 from rhodecode.model import init_model
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38 from rhodecode.model.scm import ScmModel
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39 from rhodecode.config.environment import load_environment
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40 from rhodecode.lib.utils import BasePasterCommand, Command, add_cache
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41
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42 from shutil import rmtree
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43 from webhelpers.html.builder import escape
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44 from vcs.utils.lazy import LazyProperty
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45
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46 from sqlalchemy import engine_from_config
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47
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48 from whoosh.analysis import RegexTokenizer, LowercaseFilter, StopFilter
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49 from whoosh.fields import TEXT, ID, STORED, Schema, FieldType
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50 from whoosh.index import create_in, open_dir
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51 from whoosh.formats import Characters
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52 from whoosh.highlight import highlight, SimpleFragmenter, HtmlFormatter
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53
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54
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55 #EXTENSIONS WE WANT TO INDEX CONTENT OFF
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56 INDEX_EXTENSIONS = ['action', 'adp', 'ashx', 'asmx', 'aspx', 'asx', 'axd', 'c',
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57 'cfg', 'cfm', 'cpp', 'cs', 'css', 'diff', 'do', 'el', 'erl',
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58 'h', 'htm', 'html', 'ini', 'java', 'js', 'jsp', 'jspx', 'lisp',
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59 'lua', 'm', 'mako', 'ml', 'pas', 'patch', 'php', 'php3',
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60 'php4', 'phtml', 'pm', 'py', 'rb', 'rst', 's', 'sh', 'sql',
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61 'tpl', 'txt', 'vim', 'wss', 'xhtml', 'xml', 'xsl', 'xslt',
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62 'yaws']
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63
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64 #CUSTOM ANALYZER wordsplit + lowercase filter
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65 ANALYZER = RegexTokenizer(expression=r"\w+") | LowercaseFilter()
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66
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67
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68 #INDEX SCHEMA DEFINITION
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69 SCHEMA = Schema(owner=TEXT(),
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70 repository=TEXT(stored=True),
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71 path=TEXT(stored=True),
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72 content=FieldType(format=Characters(ANALYZER),
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73 scorable=True, stored=True),
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74 modtime=STORED(), extension=TEXT(stored=True))
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75
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76
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77 IDX_NAME = 'HG_INDEX'
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78 FORMATTER = HtmlFormatter('span', between='\n<span class="break">...</span>\n')
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79 FRAGMENTER = SimpleFragmenter(200)
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81
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82 class MakeIndex(BasePasterCommand):
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83
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84 max_args = 1
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85 min_args = 1
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86
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87 usage = "CONFIG_FILE"
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88 summary = "Creates index for full text search given configuration file"
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89 group_name = "RhodeCode"
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90 takes_config_file = -1
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91 parser = Command.standard_parser(verbose=True)
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92
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93 def command(self):
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94
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95 from pylons import config
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96 add_cache(config)
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97 engine = engine_from_config(config, 'sqlalchemy.db1.')
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98 init_model(engine)
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99
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100 index_location = config['index_dir']
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101 repo_location = self.options.repo_location
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102 repo_list = map(strip, self.options.repo_list.split(',')) \
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103 if self.options.repo_list else None
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104
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105 #======================================================================
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106 # WHOOSH DAEMON
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107 #======================================================================
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108 from rhodecode.lib.pidlock import LockHeld, DaemonLock
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109 from rhodecode.lib.indexers.daemon import WhooshIndexingDaemon
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110 try:
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111 l = DaemonLock()
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112 WhooshIndexingDaemon(index_location=index_location,
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113 repo_location=repo_location,
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114 repo_list=repo_list)\
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115 .run(full_index=self.options.full_index)
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116 l.release()
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117 except LockHeld:
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118 sys.exit(1)
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119
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120 def update_parser(self):
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121 self.parser.add_option('--repo-location',
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122 action='store',
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123 dest='repo_location',
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124 help="Specifies repositories location to index REQUIRED",
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125 )
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126 self.parser.add_option('--index-only',
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127 action='store',
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128 dest='repo_list',
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129 help="Specifies a comma separated list of repositores "
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130 "to build index on OPTIONAL",
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131 )
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132 self.parser.add_option('-f',
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133 action='store_true',
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134 dest='full_index',
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135 help="Specifies that index should be made full i.e"
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136 " destroy old and build from scratch",
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137 default=False)
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138
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139 class ResultWrapper(object):
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140 def __init__(self, search_type, searcher, matcher, highlight_items):
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141 self.search_type = search_type
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142 self.searcher = searcher
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143 self.matcher = matcher
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144 self.highlight_items = highlight_items
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145 self.fragment_size = 200 / 2
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146
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147 @LazyProperty
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148 def doc_ids(self):
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149 docs_id = []
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150 while self.matcher.is_active():
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151 docnum = self.matcher.id()
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152 chunks = [offsets for offsets in self.get_chunks()]
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153 docs_id.append([docnum, chunks])
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154 self.matcher.next()
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155 return docs_id
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156
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157 def __str__(self):
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158 return '<%s at %s>' % (self.__class__.__name__, len(self.doc_ids))
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159
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160 def __repr__(self):
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161 return self.__str__()
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162
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163 def __len__(self):
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164 return len(self.doc_ids)
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165
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166 def __iter__(self):
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167 """
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168 Allows Iteration over results,and lazy generate content
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169
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170 *Requires* implementation of ``__getitem__`` method.
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171 """
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172 for docid in self.doc_ids:
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173 yield self.get_full_content(docid)
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174
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175 def __getitem__(self, key):
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176 """
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177 Slicing of resultWrapper
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178 """
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179 i, j = key.start, key.stop
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180
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181 slice = []
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182 for docid in self.doc_ids[i:j]:
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183 slice.append(self.get_full_content(docid))
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184 return slice
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185
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186
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187 def get_full_content(self, docid):
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188 res = self.searcher.stored_fields(docid[0])
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189 f_path = res['path'][res['path'].find(res['repository']) \
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190 + len(res['repository']):].lstrip('/')
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191
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192 content_short = self.get_short_content(res, docid[1])
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193 res.update({'content_short':content_short,
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194 'content_short_hl':self.highlight(content_short),
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195 'f_path':f_path})
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196
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197 return res
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198
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199 def get_short_content(self, res, chunks):
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200
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201 return ''.join([res['content'][chunk[0]:chunk[1]] for chunk in chunks])
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202
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203 def get_chunks(self):
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204 """
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205 Smart function that implements chunking the content
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206 but not overlap chunks so it doesn't highlight the same
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207 close occurrences twice.
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208 @param matcher:
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209 @param size:
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210 """
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211 memory = [(0, 0)]
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212 for span in self.matcher.spans():
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213 start = span.startchar or 0
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214 end = span.endchar or 0
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215 start_offseted = max(0, start - self.fragment_size)
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216 end_offseted = end + self.fragment_size
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217
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218 if start_offseted < memory[-1][1]:
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219 start_offseted = memory[-1][1]
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220 memory.append((start_offseted, end_offseted,))
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221 yield (start_offseted, end_offseted,)
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222
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223 def highlight(self, content, top=5):
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224 if self.search_type != 'content':
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225 return ''
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226 hl = highlight(escape(content),
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227 self.highlight_items,
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228 analyzer=ANALYZER,
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229 fragmenter=FRAGMENTER,
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230 formatter=FORMATTER,
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231 top=top)
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232 return hl