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# -*- coding: utf-8 -*-
"""
rhodecode.lib.indexers.__init__
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Whoosh indexing module for RhodeCode
:created_on: Aug 17, 2010
:author: marcink
:copyright: (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
:license: GPLv3, see COPYING for more details.
"""
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2
# of the License or (at your opinion) any later version of the license.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
import os
import sys
import traceback
from os.path import dirname as dn, join as jn
#to get the rhodecode import
sys.path.append(dn(dn(dn(os.path.realpath(__file__)))))
from string import strip
from rhodecode.model import init_model
from rhodecode.model.scm import ScmModel
from rhodecode.config.environment import load_environment
from rhodecode.lib.utils import BasePasterCommand, Command, add_cache
from shutil import rmtree
from webhelpers.html.builder import escape
from vcs.utils.lazy import LazyProperty
from sqlalchemy import engine_from_config
from whoosh.analysis import RegexTokenizer, LowercaseFilter, StopFilter
from whoosh.fields import TEXT, ID, STORED, Schema, FieldType
from whoosh.index import create_in, open_dir
from whoosh.formats import Characters
from whoosh.highlight import highlight, SimpleFragmenter, HtmlFormatter
#EXTENSIONS WE WANT TO INDEX CONTENT OFF
INDEX_EXTENSIONS = ['action', 'adp', 'ashx', 'asmx', 'aspx', 'asx', 'axd', 'c',
'cfg', 'cfm', 'cpp', 'cs', 'css', 'diff', 'do', 'el', 'erl',
'h', 'htm', 'html', 'ini', 'java', 'js', 'jsp', 'jspx', 'lisp',
'lua', 'm', 'mako', 'ml', 'pas', 'patch', 'php', 'php3',
'php4', 'phtml', 'pm', 'py', 'rb', 'rst', 's', 'sh', 'sql',
'tpl', 'txt', 'vim', 'wss', 'xhtml', 'xml', 'xsl', 'xslt',
'yaws']
#CUSTOM ANALYZER wordsplit + lowercase filter
ANALYZER = RegexTokenizer(expression=r"\w+") | LowercaseFilter()
#INDEX SCHEMA DEFINITION
SCHEMA = Schema(owner=TEXT(),
repository=TEXT(stored=True),
path=TEXT(stored=True),
content=FieldType(format=Characters(ANALYZER),
scorable=True, stored=True),
modtime=STORED(), extension=TEXT(stored=True))
IDX_NAME = 'HG_INDEX'
FORMATTER = HtmlFormatter('span', between='\n<span class="break">...</span>\n')
FRAGMENTER = SimpleFragmenter(200)
class MakeIndex(BasePasterCommand):
max_args = 1
min_args = 1
usage = "CONFIG_FILE"
summary = "Creates index for full text search given configuration file"
group_name = "RhodeCode"
takes_config_file = -1
parser = Command.standard_parser(verbose=True)
def command(self):
from pylons import config
add_cache(config)
engine = engine_from_config(config, 'sqlalchemy.db1.')
init_model(engine)
index_location = config['index_dir']
repo_location = self.options.repo_location
repo_list = map(strip, self.options.repo_list.split(',')) \
if self.options.repo_list else None
#======================================================================
# WHOOSH DAEMON
#======================================================================
from rhodecode.lib.pidlock import LockHeld, DaemonLock
from rhodecode.lib.indexers.daemon import WhooshIndexingDaemon
try:
l = DaemonLock()
WhooshIndexingDaemon(index_location=index_location,
repo_location=repo_location,
repo_list=repo_list)\
.run(full_index=self.options.full_index)
l.release()
except LockHeld:
sys.exit(1)
def update_parser(self):
self.parser.add_option('--repo-location',
action='store',
dest='repo_location',
help="Specifies repositories location to index REQUIRED",
)
self.parser.add_option('--index-only',
action='store',
dest='repo_list',
help="Specifies a comma separated list of repositores "
"to build index on OPTIONAL",
)
self.parser.add_option('-f',
action='store_true',
dest='full_index',
help="Specifies that index should be made full i.e"
" destroy old and build from scratch",
default=False)
class ResultWrapper(object):
def __init__(self, search_type, searcher, matcher, highlight_items):
self.search_type = search_type
self.searcher = searcher
self.matcher = matcher
self.highlight_items = highlight_items
self.fragment_size = 200 / 2
@LazyProperty
def doc_ids(self):
docs_id = []
while self.matcher.is_active():
docnum = self.matcher.id()
chunks = [offsets for offsets in self.get_chunks()]
docs_id.append([docnum, chunks])
self.matcher.next()
return docs_id
def __str__(self):
return '<%s at %s>' % (self.__class__.__name__, len(self.doc_ids))
def __repr__(self):
return self.__str__()
def __len__(self):
return len(self.doc_ids)
def __iter__(self):
"""
Allows Iteration over results,and lazy generate content
*Requires* implementation of ``__getitem__`` method.
"""
for docid in self.doc_ids:
yield self.get_full_content(docid)
def __getitem__(self, key):
"""
Slicing of resultWrapper
"""
i, j = key.start, key.stop
slice = []
for docid in self.doc_ids[i:j]:
slice.append(self.get_full_content(docid))
return slice
def get_full_content(self, docid):
res = self.searcher.stored_fields(docid[0])
f_path = res['path'][res['path'].find(res['repository']) \
+ len(res['repository']):].lstrip('/')
content_short = self.get_short_content(res, docid[1])
res.update({'content_short':content_short,
'content_short_hl':self.highlight(content_short),
'f_path':f_path})
return res
def get_short_content(self, res, chunks):
return ''.join([res['content'][chunk[0]:chunk[1]] for chunk in chunks])
def get_chunks(self):
"""
Smart function that implements chunking the content
but not overlap chunks so it doesn't highlight the same
close occurrences twice.
@param matcher:
@param size:
"""
memory = [(0, 0)]
for span in self.matcher.spans():
start = span.startchar or 0
end = span.endchar or 0
start_offseted = max(0, start - self.fragment_size)
end_offseted = end + self.fragment_size
if start_offseted < memory[-1][1]:
start_offseted = memory[-1][1]
memory.append((start_offseted, end_offseted,))
yield (start_offseted, end_offseted,)
def highlight(self, content, top=5):
if self.search_type != 'content':
return ''
hl = highlight(escape(content),
self.highlight_items,
analyzer=ANALYZER,
fragmenter=FRAGMENTER,
formatter=FORMATTER,
top=top)
return hl
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