Mercurial > kallithea
annotate pylons_app/controllers/search.py @ 406:b153a51b1d3b
Implemented search using whoosh. Still as experimental option.
author | Marcin Kuzminski <marcin@python-works.com> |
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date | Tue, 17 Aug 2010 23:15:36 +0200 |
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children | 9a7ae16ff53e |
rev | line source |
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Implemented search using whoosh. Still as experimental option.
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1 #!/usr/bin/env python |
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2 # encoding: utf-8 |
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3 # search controller for pylons |
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4 # Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com> |
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5 # |
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6 # This program is free software; you can redistribute it and/or |
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7 # modify it under the terms of the GNU General Public License |
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8 # as published by the Free Software Foundation; version 2 |
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9 # of the License or (at your opinion) any later version of the license. |
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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 General Public License for more details. |
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15 # |
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16 # You should have received a copy of the GNU General Public License |
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17 # along with this program; if not, write to the Free Software |
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18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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19 # MA 02110-1301, USA. |
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20 """ |
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21 Created on Aug 7, 2010 |
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22 search controller for pylons |
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23 @author: marcink |
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24 """ |
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25 from pylons import request, response, session, tmpl_context as c, url |
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26 from pylons.controllers.util import abort, redirect |
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27 from pylons_app.lib.auth import LoginRequired |
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28 from pylons_app.lib.base import BaseController, render |
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29 from pylons_app.lib.indexers import ANALYZER, IDX_LOCATION, SCHEMA |
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30 from webhelpers.html.builder import escape |
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31 from whoosh.highlight import highlight, SimpleFragmenter, HtmlFormatter, \ |
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32 ContextFragmenter |
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33 from whoosh.index import open_dir, EmptyIndexError |
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34 from whoosh.qparser import QueryParser, QueryParserError |
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35 from whoosh.query import Phrase |
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36 import logging |
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37 import traceback |
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38 |
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39 log = logging.getLogger(__name__) |
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40 |
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41 class SearchController(BaseController): |
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42 |
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43 @LoginRequired() |
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44 def __before__(self): |
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45 super(SearchController, self).__before__() |
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46 |
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47 |
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48 def index(self): |
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49 c.formated_results = [] |
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50 c.runtime = '' |
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51 search_items = set() |
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52 c.cur_query = request.GET.get('q', None) |
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53 if c.cur_query: |
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54 cur_query = c.cur_query.lower() |
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55 |
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56 |
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57 if c.cur_query: |
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58 try: |
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59 idx = open_dir(IDX_LOCATION, indexname='HG_INDEX') |
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60 searcher = idx.searcher() |
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61 |
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62 qp = QueryParser("content", schema=SCHEMA) |
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63 try: |
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64 query = qp.parse(unicode(cur_query)) |
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65 |
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66 if isinstance(query, Phrase): |
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67 search_items.update(query.words) |
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68 else: |
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69 for i in query.all_terms(): |
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70 search_items.add(i[1]) |
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71 |
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72 log.debug(query) |
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73 log.debug(search_items) |
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74 results = searcher.search(query) |
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75 c.runtime = '%s results (%.3f seconds)' \ |
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76 % (len(results), results.runtime) |
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77 |
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78 analyzer = ANALYZER |
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79 formatter = HtmlFormatter('span', |
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80 between='\n<span class="break">...</span>\n') |
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81 |
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82 #how the parts are splitted within the same text part |
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83 fragmenter = SimpleFragmenter(200) |
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84 #fragmenter = ContextFragmenter(search_items) |
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85 |
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86 for res in results: |
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87 d = {} |
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88 d.update(res) |
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89 hl = highlight(escape(res['content']), search_items, |
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90 analyzer=analyzer, |
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91 fragmenter=fragmenter, |
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92 formatter=formatter, |
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93 top=5) |
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94 f_path = res['path'][res['path'].find(res['repository']) \ |
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95 + len(res['repository']):].lstrip('/') |
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96 d.update({'content_short':hl, |
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97 'f_path':f_path}) |
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98 #del d['content'] |
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99 c.formated_results.append(d) |
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100 |
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101 except QueryParserError: |
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102 c.runtime = 'Invalid search query. Try quoting it.' |
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103 |
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104 except (EmptyIndexError, IOError): |
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105 log.error(traceback.format_exc()) |
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106 log.error('Empty Index data') |
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107 c.runtime = 'There is no index to search in. Please run whoosh indexer' |
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108 |
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109 |
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110 |
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111 # Return a rendered template |
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112 return render('/search/search.html') |