150 lines
4.4 KiB
Python
150 lines
4.4 KiB
Python
from flask import g, current_app
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from realms.lib.util import filename_to_cname
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def simple(app):
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return SimpleSearch()
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def whoosh(app):
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import os
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import sys
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for mode in [os.W_OK, os.R_OK]:
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if not os.access(app.config['WHOOSH_INDEX'], mode):
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sys.exit('Read and write access to WHOOSH_INDEX is required (%s)' %
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app.config['WHOOSH_INDEX'])
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return WhooshSearch(app.config['WHOOSH_INDEX'], app.config['WHOOSH_LANGUAGE'])
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def elasticsearch(app):
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from flask.ext.elastic import Elastic
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return ElasticSearch(Elastic(app))
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class Search(object):
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def __init__(self, app=None):
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if app is not None:
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self.init_app(app)
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def init_app(self, app):
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search_obj = globals()[app.config['SEARCH_TYPE']]
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app.extensions['search'] = search_obj(app)
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def __getattr__(self, item):
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return getattr(current_app.extensions['search'], item)
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class BaseSearch():
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pass
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class SimpleSearch(BaseSearch):
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def wiki(self, query):
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res = []
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for entry in g.current_wiki.get_index():
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name = filename_to_cname(entry['name'])
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if set(query.split()).intersection(name.split('-')):
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page = g.current_wiki.get_page(name)
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res.append(dict(name=name, content=page['data']))
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return res
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def users(self, query):
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pass
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class WhooshSearch(BaseSearch):
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def __init__(self, index_path, language):
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from whoosh import index as whoosh_index
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from whoosh.fields import Schema, TEXT, ID
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from whoosh import qparser
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from whoosh.highlight import UppercaseFormatter
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from whoosh.analysis import SimpleAnalyzer, LanguageAnalyzer
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from whoosh.lang import has_stemmer, has_stopwords
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import os.path
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if not has_stemmer(language) or not has_stopwords(language):
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# TODO Display a warning?
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analyzer = SimpleAnalyzer()
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else:
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analyzer = LanguageAnalyzer(language)
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self.schema = Schema(path=ID(unique=True, stored=True), body=TEXT(analyzer=analyzer))
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self.formatter = UppercaseFormatter()
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self.index_path = index_path
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if os.path.exists(index_path):
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self.search_index = whoosh_index.open_dir(index_path)
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else:
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os.mkdir(index_path)
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self.search_index = whoosh_index.create_in(index_path, self.schema)
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self.query_parser = qparser.MultifieldParser(["body", "path"], schema=self.schema)
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self.query_parser.add_plugin(qparser.FuzzyTermPlugin())
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def index(self, index, doc_type, id_=None, body=None):
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writer = self.search_index.writer()
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writer.update_document(path=id_.decode("utf-8"), body=body["content"].decode("utf-8"))
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writer.commit()
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def index_wiki(self, name, body):
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self.index('wiki', 'page', id_=name, body=body)
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def delete_index(self, index):
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from whoosh import index as whoosh_index
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self.search_index.close()
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self.search_index = whoosh_index.create_in(self.index_path, schema=self.schema)
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def wiki(self, query):
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if not query:
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return []
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q = self.query_parser.parse("%s~2" % (query,))
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with self.search_index.searcher() as s:
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results = s.search(q)
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results.formatter = self.formatter
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res = []
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for hit in results:
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name = hit["path"]
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page_data = g.current_wiki.get_page(name)["data"].decode("utf-8")
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content = hit.highlights('body', text=page_data)
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res.append(dict(name=name, content=content))
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return res
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def users(self, query):
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pass
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class ElasticSearch(BaseSearch):
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def __init__(self, elastic):
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self.elastic = elastic
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def index(self, index, doc_type, id_=None, body=None):
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return self.elastic.index(index=index, doc_type=doc_type, id=id_, body=body)
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def index_wiki(self, name, body):
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self.index('wiki', 'page', id_=name, body=body)
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def delete_index(self, index):
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return self.elastic.indices.delete(index=index, ignore=[400, 404])
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def wiki(self, query):
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if not query:
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return []
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res = self.elastic.search(index='wiki', body={"query": {
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"multi_match": {
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"query": query,
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"fields": ["name"]
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}}})
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return [hit["_source"] for hit in res['hits']['hits']]
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def users(self, query):
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pass
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