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bibindex_engine_stopwords.py
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Sat, Jun 22, 00:50

bibindex_engine_stopwords.py
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## $Id$
## BibIndex stopwords facility.
## This file is part of the CERN Document Server Software (CDSware).
## Copyright (C) 2002 CERN.
##
## The CDSware 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; either version 2 of the
## License, or (at your option) any later version.
##
## The CDSware 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 CDSware; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
import string
from bibindex_engine_config import *
def create_stopwords(filename=cfg_path_to_stopwords_file):
"""Create stopword dictionary out of FILENAME."""
try:
filename = open(filename, 'r')
except:
return {}
lines = filename.readlines()
filename.close()
stopdict = {}
for line in lines:
stopdict[string.rstrip(line)] = 1
return stopdict
stopwords = create_stopwords()
def is_stopword(word, force_check=0):
"""Return true if WORD is found among stopwords, false otherwise.
Also, return false if BibIndex wasn't configured to use
stopwords. However, if FORCE_CHECK is set to 1, then do not
pay attention to whether the admin disabled stopwords
functionality, but look up the word anyway. This mode is
useful for ranking.
"""
# note: input word is assumed to be in lowercase
if (cfg_remove_stopwords or force_check) and stopwords.has_key(word):
return True
return False

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