suppress DEBUG messages by default; add flag to enable them

libs/log.py

@@ -13,6 +13,12 @@ from __future__ import print_function
 from sys import stderr
 from collections import namedtuple
 
+_log_settings = {'debug': False}
+
+def set_verbose_logging(is_enabled):
+    _log_settings['debug'] = is_enabled
+
+
 def colorred(m):
     return "\033[91m" + m + "\033[0m"
 
@@ -38,7 +44,8 @@ def lError(msg):
 
 
 def lDbg(msg):
-    print(colorblue("[DEBUG] ") + str(msg), file=stderr)
+    if _log_settings['debug']:
+        print(colorblue("[DEBUG] ") + str(msg), file=stderr)
 
 
 def lWarn(msg):

webis.py

@@ -122,7 +122,7 @@ def run_subcommand(subcommand, subcommandpath, params=[]):
     cmd = " ".join([subcommandpath] + params)
     return_value = os.system(cmd)
     if return_value == 0:
-        lInfo("Done.")
+        lDbg("Done.")
     else:
         lError("An error occurred while executing " + cmd)
     return return_value
@@ -142,6 +142,8 @@ def main(args):
     commands = get_commands(config)
     parser = argparse.ArgumentParser()
     parser.register('action', 'parsers', AliasedSubParsersAction)
+    parser.add_argument('-v', '--verbose', help='Print debug messages.',
+                        action='store_true')
 
     subparsers = {}
     allcommands = {}
@@ -177,6 +179,7 @@ def main(args):
 
     parseresults = parser.parse_known_args(args)
     argsdict = vars(parseresults[0])
+    set_verbose_logging(argsdict['verbose'])
     parameter = parseresults[1]
 
     if argsdict['<command>'] not in subparsers: