cluster.py: added command-line options for thresholds

mossutils/cluster.py

 import re
 import os
-# import argparse
+import argparse
 import logging
 import csv
 import subprocess
@@ -196,17 +196,35 @@ def create_clusters_matches_csv_file(cluster_entries, clusters_matches_csv_file)
       for entry in cluster_entries:
         csv_writer.writerow(entry.values_flattened())  
 
+def configure_cli_parser(parser):
+  parser.add_argument(
+    "-tp", "--threshold-percentage",
+    type=int,
+    help="Threshold for similarity in percentage; matches below will be excluded (default: {})".format(DEFAULT_THRESHOLD_PERCENTAGE))
+
+  parser.add_argument(
+    "-tl", "--threshold-lines",
+    type=int,
+    help="Threshold for similarity in lines of code; matches below will be excluded (default: {})".format(DEFAULT_THRESHOLD_LINES))
+
+  logutils.add_loglevel_argument(parser)
+
 def main(
     results_csv_file=DEFAULT_RESULTS_CSV_FILE,
     total_graph_dot_file=DEFAULT_TOTAL_GRAPH_DOT_FILE,
     cluster_files_dir=DEFAULT_CLUSTER_FILES_DIR,
     cluster_file_pattern=DEFAULT_CLUSTER_FILE_PATTERN,
-    percentage_threshold=DEFAULT_THRESHOLD_PERCENTAGE,
-    lines_threshold=DEFAULT_THRESHOLD_LINES,
     create_svg_files=DEFAULT_CREATE_SVG_FILES,
     clusters_matches_csv_file=DEFAULT_CLUSTERS_MATCHES_CSV_FILE):
 
-  logutils.configure_level_and_format()
+  parser = argparse.ArgumentParser()
+  configure_cli_parser(parser)
+  args = parser.parse_args()
+
+  logutils.configure_level_and_format(args.log_level)
+
+  percentage_threshold=args.threshold_percentage
+  lines_threshold=args.threshold_lines
 
   results = read_results_from_csv_file(results_csv_file)
   graph = get_results_graph(results, percentage_threshold, lines_threshold)