scripts: logging/dictionary: fixes pylint warnings

Fixes some easy pylint warnings.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

scripts/logging/dictionary/dictionary_parser/log_database.py

@@ -63,16 +63,16 @@ class LogDatabase():
     BIG_ENDIAN = False
 
     def __init__(self):
-        new_db = dict()
+        new_db = {}
 
         new_db['version'] = self.ZEPHYR_DICT_LOG_VER
-        new_db['target'] = dict()
-        new_db['sections'] = dict()
-        new_db['log_subsys'] = dict()
-        new_db['log_subsys']['log_instances'] = dict()
+        new_db['target'] = {}
+        new_db['sections'] = {}
+        new_db['log_subsys'] = {}
+        new_db['log_subsys']['log_instances'] = {}
         new_db['build_id'] = None
         new_db['arch'] = None
-        new_db['kconfigs'] = dict()
+        new_db['kconfigs'] = {}
 
         self.database = new_db
 
@@ -216,7 +216,7 @@ class LogDatabase():
     def read_json_database(db_file_name):
         """Read database from file and return a LogDatabase object"""
         try:
-            with open(db_file_name, "r") as db_fd:
+            with open(db_file_name, "r", encoding="iso-8859-1") as db_fd:
                 json_db = json.load(db_fd)
         except (OSError, json.JSONDecodeError):
             return None
@@ -243,7 +243,7 @@ class LogDatabase():
             del sect['data']
 
         try:
-            with open(db_file_name, "w") as db_fd:
+            with open(db_file_name, "w", encoding="iso-8859-1") as db_fd:
                 db_fd.write(json.dumps(json_db))
         except OSError:
             return False

scripts/logging/dictionary/dictionary_parser/log_parser_v1.py

@@ -21,7 +21,13 @@ from .log_parser import LogParser
 
 HEX_BYTES_IN_LINE = 16
 
-LOG_LEVELS = [('none', Fore.WHITE), ('err', Fore.RED), ('wrn', Fore.YELLOW), ('inf', Fore.GREEN), ('dbg', Fore.BLUE)]
+LOG_LEVELS = [
+    ('none', Fore.WHITE),
+    ('err', Fore.RED),
+    ('wrn', Fore.YELLOW),
+    ('inf', Fore.GREEN),
+    ('dbg', Fore.BLUE)
+]
 
 # Need to keep sync with struct log_dict_output_msg_hdr in
 # include/logging/log_output_dict.h.
@@ -97,7 +103,7 @@ class DataTypes():
 
     def __init__(self, database):
         self.database = database
-        self.data_types = dict()
+        self.data_types = {}
 
         if database.is_tgt_64bit():
             self.add_data_type(self.LONG, "q")
@@ -122,7 +128,7 @@ class DataTypes():
 
         formatter = endianness + fmt
 
-        self.data_types[data_type] = dict()
+        self.data_types[data_type] = {}
         self.data_types[data_type]['fmt'] = formatter
 
         size = struct.calcsize(formatter)
@@ -212,7 +218,7 @@ class LogParserV1(LogParser):
         is_parsing = False
         do_extract = False
 
-        args = list()
+        args = []
 
         # Translated from cbvprintf_package()
         for idx, fmt in enumerate(fmt_str):
@@ -298,7 +304,7 @@ class LogParserV1(LogParser):
     @staticmethod
     def extract_string_table(str_tbl):
         """Extract string table in a packaged log message"""
-        tbl = dict()
+        tbl = {}
 
         one_str = ""
         next_new_string = True
@@ -337,14 +343,16 @@ class LogParserV1(LogParser):
                 chr_vals += " "
 
             elif chr_done == HEX_BYTES_IN_LINE:
-                print(f"{color}%s%s|%s{Fore.RESET}" % ((" " * prefix_len), hex_vals, chr_vals))
+                print(f"{color}%s%s|%s{Fore.RESET}" % ((" " * prefix_len),
+                      hex_vals, chr_vals))
                 hex_vals = ""
                 chr_vals = ""
                 chr_done = 0
 
         if len(chr_vals) > 0:
             hex_padding = "   " * (HEX_BYTES_IN_LINE - chr_done)
-            print(f"{color}%s%s%s|%s{Fore.RESET}" % ((" " * prefix_len), hex_vals, hex_padding, chr_vals))
+            print(f"{color}%s%s%s|%s{Fore.RESET}" % ((" " * prefix_len),
+                  hex_vals, hex_padding, chr_vals))
 
 
     def parse_one_normal_msg(self, logdata, offset):
@@ -420,7 +428,7 @@ class LogParserV1(LogParser):
         log_msg = fmt_str % args
 
         if level == 0:
-            print("%s" % log_msg, end='')
+            print(f"{log_msg}", end='')
         else:
             log_prefix = f"[{timestamp:>10}] <{level_str}> {source_id_str}: "
             print(f"{color}%s%s{Fore.RESET}" % (log_prefix, log_msg))
@@ -446,7 +454,7 @@ class LogParserV1(LogParser):
                 num_dropped = struct.unpack_from(self.fmt_dropped_cnt, logdata, offset)
                 offset += struct.calcsize(self.fmt_dropped_cnt)
 
-                print("--- %d messages dropped ---" % num_dropped)
+                print(f"--- {num_dropped} messages dropped ---")
 
             elif msg_type == MSG_TYPE_NORMAL:
                 ret = self.parse_one_normal_msg(logdata, offset)

scripts/logging/dictionary/dictionary_parser/utils.py

@@ -15,7 +15,7 @@ def convert_hex_file_to_bin(hexfile):
     """This converts a file in hexadecimal to binary"""
     bin_data = b''
 
-    with open(hexfile, "r") as hfile:
+    with open(hexfile, "r", encoding="iso-8859-1") as hfile:
         for line in hfile.readlines():
             hex_str = line.strip()
 

scripts/logging/dictionary/log_parser.py

@@ -42,22 +42,11 @@ def parse_args():
     return argparser.parse_args()
 
 
-def main():
-    """Main function of log parser"""
-    args = parse_args()
-
-    # Setup logging for parser
-    logging.basicConfig(format=LOGGER_FORMAT)
-    if args.debug:
-        logger.setLevel(logging.DEBUG)
-    else:
-        logger.setLevel(logging.INFO)
-
-    # Read from database file
-    database = LogDatabase.read_json_database(args.dbfile)
-    if database is None:
-        logger.error("ERROR: Cannot open database file: %s, exiting...", args.dbfile)
-        sys.exit(1)
+def read_log_file(args):
+    """
+    Read the log from file
+    """
+    logdata = None
 
     # Open log data file for reading
     if args.hex:
@@ -67,7 +56,7 @@ def main():
         else:
             hexdata = ''
 
-            with open(args.logfile, "r") as hexfile:
+            with open(args.logfile, "r", encoding="iso-8859-1") as hexfile:
                 for line in hexfile.readlines():
                     hexdata += line.strip()
 
@@ -109,6 +98,31 @@ def main():
 
         logfile.close()
 
+    return logdata
+
+
+def main():
+    """Main function of log parser"""
+    args = parse_args()
+
+    # Setup logging for parser
+    logging.basicConfig(format=LOGGER_FORMAT)
+    if args.debug:
+        logger.setLevel(logging.DEBUG)
+    else:
+        logger.setLevel(logging.INFO)
+
+    # Read from database file
+    database = LogDatabase.read_json_database(args.dbfile)
+    if database is None:
+        logger.error("ERROR: Cannot open database file: %s, exiting...", args.dbfile)
+        sys.exit(1)
+
+    logdata = read_log_file(args)
+    if logdata is None:
+        logger.error("ERROR: cannot read log from file: %s, exiting...", args.logfile)
+        sys.exit(1)
+
     log_parser = dictionary_parser.get_parser(database)
     if log_parser is not None:
         logger.debug("# Build ID: %s", database.get_build_id())