--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lexmapr/pipeline_resources.py	Wed Aug 31 14:32:07 2022 -0400
@@ -0,0 +1,63 @@
+"""Cache, generate and load resources"""
+
+import csv, json, os, sys
+from nltk import word_tokenize
+from itertools import permutations
+from collections import OrderedDict
+from lexmapr.definitions import ROOT
+from lexmapr.pipeline_helpers import punctuation_treatment
+
+
+def _create_lookup_table_skeleton():
+    '''Generate an empty lookup table'''
+    return({'abbreviations':{}, 'inflection_exceptions':{}, 'non_english_words':{},
+            'spelling_mistakes':{}, 'stop_words':{}, 'suffixes':{}})
+
+
+def _get_resource_dict(resource_file_name):
+    '''Get dictionary of resources from CSV file'''
+    ret_dic = {}
+    with open(os.path.join(ROOT, 'predefined_resources', resource_file_name)) as RES_file:
+        next(RES_file)
+        for row in csv.reader(RES_file, delimiter=','):
+            try:
+                ret_dic[punctuation_treatment(row[0].strip())] = \
+                    punctuation_treatment(row[1].strip())
+            except IndexError:
+                ret_dic[punctuation_treatment(row[0].strip())] = ''
+    return(ret_dic)
+
+
+def _add_predefined_resources_to_lookup_table(lookup_table):
+    '''Adds elements from lexmapr/predefined_resources to lookup table'''
+    lookup_table['abbreviations'] = _get_resource_dict('abbrv.csv')
+    lookup_table['inflection_exceptions'] = _get_resource_dict('inflection_exceptions.csv')
+    lookup_table['non_english_words'] = _get_resource_dict('nengwords.csv')
+    lookup_table['spelling_mistakes'] = _get_resource_dict('ScorLex.csv') #only from v 0.7
+    lookup_table['spelling_mistakes'].update(_get_resource_dict('misspellings.csv'))
+    lookup_table['stop_words'] = _get_resource_dict('mining_stopwords.csv')
+    lookup_table['suffixes'] = _get_resource_dict('suffixes.csv')
+    return(lookup_table)
+
+
+def get_predefined_resources():
+    '''Creates lookup table'''
+    lookup_table_path = os.path.join(ROOT, 'predefined_resources', 'lookup_table.json')
+    if os.path.exists(lookup_table_path):
+        with open(lookup_table_path) as LT_file:
+            lookup_table = json.load(LT_file)
+    else:
+        lookup_table = _create_lookup_table_skeleton()
+        lookup_table = _add_predefined_resources_to_lookup_table(lookup_table)
+        with open(lookup_table_path, 'w') as LT_file:
+            json.dump(lookup_table, LT_file)
+    return(lookup_table)
+
+
+def get_resource_label_permutations(resource_label):
+    '''Get permutations of some term'''
+    permutations_set = list(OrderedDict.fromkeys(permutations(resource_label.split())))
+    ret_list = []
+    for permutation_tuple in permutations_set:
+        ret_list.append(' '.join(permutation_tuple))
+    return(ret_list)