audiopolicy: engineconfigurable: Update tool scripts to python 3

As python 2 is beeing deprecated, this CL updates all the tool
scripts to python3.
It also fix some issues revealed by pylint.

Test: lunch audio_configurable target & build
Change-Id: I69a201190c688be3825cbdaa238046367a5d09c7
Signed-off-by: Francois Gaffie <francois.gaffie@renault.com>
diff --git a/services/audiopolicy/engineconfigurable/tools/buildStrategiesStructureFile.py b/services/audiopolicy/engineconfigurable/tools/buildStrategiesStructureFile.py
index af40602..f69d346 100755
--- a/services/audiopolicy/engineconfigurable/tools/buildStrategiesStructureFile.py
+++ b/services/audiopolicy/engineconfigurable/tools/buildStrategiesStructureFile.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 
 #
 # Copyright 2019, The Android Open Source Project
@@ -17,16 +17,12 @@
 #
 
 import argparse
-import re
 import sys
-import tempfile
 import os
 import logging
-import subprocess
 import xml.etree.ElementTree as ET
 import xml.etree.ElementInclude as EI
 import xml.dom.minidom as MINIDOM
-from collections import OrderedDict
 
 #
 # Helper script that helps to feed at build time the XML Product Strategies Structure file file used
@@ -46,33 +42,34 @@
 
 def parseArgs():
     argparser = argparse.ArgumentParser(description="Parameter-Framework XML \
-        product strategies structure file generator.\n\
-        Exit with the number of (recoverable or not) error that occured.")
+                                        product strategies structure file generator.\n\
+                                        Exit with the number of (recoverable or not) \
+                                        error that occured.")
     argparser.add_argument('--audiopolicyengineconfigurationfile',
-            help="Android Audio Policy Engine Configuration file, Mandatory.",
-            metavar="(AUDIO_POLICY_ENGINE_CONFIGURATION_FILE)",
-            type=argparse.FileType('r'),
-            required=True)
+                           help="Android Audio Policy Engine Configuration file, Mandatory.",
+                           metavar="(AUDIO_POLICY_ENGINE_CONFIGURATION_FILE)",
+                           type=argparse.FileType('r'),
+                           required=True)
     argparser.add_argument('--productstrategiesstructurefile',
-            help="Product Strategies Structure XML base file, Mandatory.",
-            metavar="STRATEGIES_STRUCTURE_FILE",
-            type=argparse.FileType('r'),
-            required=True)
+                           help="Product Strategies Structure XML base file, Mandatory.",
+                           metavar="STRATEGIES_STRUCTURE_FILE",
+                           type=argparse.FileType('r'),
+                           required=True)
     argparser.add_argument('--outputfile',
-            help="Product Strategies Structure output file, Mandatory.",
-            metavar="STRATEGIES_STRUCTURE_OUTPUT_FILE",
-            type=argparse.FileType('w'),
-            required=True)
+                           help="Product Strategies Structure output file, Mandatory.",
+                           metavar="STRATEGIES_STRUCTURE_OUTPUT_FILE",
+                           type=argparse.FileType('w'),
+                           required=True)
     argparser.add_argument('--verbose',
-            action='store_true')
+                           action='store_true')
 
     return argparser.parse_args()
 
 
-def generateXmlStructureFile(strategies, strategyStructureInFile, outputFile):
+def generateXmlStructureFile(strategies, strategy_structure_in_file, output_file):
 
-    logging.info("Importing strategyStructureInFile {}".format(strategyStructureInFile))
-    strategies_in_tree = ET.parse(strategyStructureInFile)
+    logging.info("Importing strategy_structure_in_file {}".format(strategy_structure_in_file))
+    strategies_in_tree = ET.parse(strategy_structure_in_file)
 
     strategies_root = strategies_in_tree.getroot()
     strategy_components = strategies_root.find('ComponentType')
@@ -80,13 +77,15 @@
     for strategy_name in strategies:
         context_mapping = "".join(map(str, ["Name:", strategy_name]))
         strategy_pfw_name = strategy_name.replace('STRATEGY_', '').lower()
-        strategy_component_node = ET.SubElement(strategy_components, "Component", Name=strategy_pfw_name, Type="ProductStrategy", Mapping=context_mapping)
+        ET.SubElement(strategy_components, "Component",
+                      Name=strategy_pfw_name, Type="ProductStrategy",
+                      Mapping=context_mapping)
 
     xmlstr = ET.tostring(strategies_root, encoding='utf8', method='xml')
     reparsed = MINIDOM.parseString(xmlstr)
     prettyXmlStr = reparsed.toprettyxml(newl='\r\n')
     prettyXmlStr = os.linesep.join([s for s in prettyXmlStr.splitlines() if s.strip()])
-    outputFile.write(prettyXmlStr.encode('utf-8'))
+    output_file.write(prettyXmlStr)
 
 def capitalizeLine(line):
     return ' '.join((w.capitalize() for w in line.split(' ')))
@@ -97,26 +96,27 @@
 #
 def parseAndroidAudioPolicyEngineConfigurationFile(audiopolicyengineconfigurationfile):
 
-    logging.info("Checking Audio Policy Engine Configuration file {}".format(audiopolicyengineconfigurationfile))
+    logging.info("Checking Audio Policy Engine Configuration file {}".format(
+        audiopolicyengineconfigurationfile))
     #
     # extract all product strategies name from audio policy engine configuration file
     #
     strategy_names = []
 
-    oldWorkingDir = os.getcwd()
-    print "Current working directory %s" % oldWorkingDir
+    old_working_dir = os.getcwd()
+    print("Current working directory %s" % old_working_dir)
 
-    newDir = os.path.join(oldWorkingDir , audiopolicyengineconfigurationfile.name)
+    new_dir = os.path.join(old_working_dir, audiopolicyengineconfigurationfile.name)
 
     policy_engine_in_tree = ET.parse(audiopolicyengineconfigurationfile)
-    os.chdir(os.path.dirname(os.path.normpath(newDir)))
+    os.chdir(os.path.dirname(os.path.normpath(new_dir)))
 
-    print "new working directory %s" % os.getcwd()
+    print("new working directory %s" % os.getcwd())
 
     policy_engine_root = policy_engine_in_tree.getroot()
     EI.include(policy_engine_root)
 
-    os.chdir(oldWorkingDir)
+    os.chdir(old_working_dir)
 
     for strategy in policy_engine_root.iter('ProductStrategy'):
         strategy_names.append(strategy.get('name'))
@@ -128,7 +128,8 @@
     logging.root.setLevel(logging.INFO)
     args = parseArgs()
 
-    strategies = parseAndroidAudioPolicyEngineConfigurationFile(args.audiopolicyengineconfigurationfile)
+    strategies = parseAndroidAudioPolicyEngineConfigurationFile(
+        args.audiopolicyengineconfigurationfile)
 
     product_strategies_structure = args.productstrategiesstructurefile