def __load_history(self):
        self.history = {}

        if not os.path.exists(self.HISTORY_FILE):
            self.debug("History file '%s' doesn't exist" % self.HISTORY_FILE)
            return

        self.debug('Loading the history from file ' + self.HISTORY_FILE)
        try:
            with open(self.HISTORY_FILE, 'r') as f:
                updated_history = json.load(f)
        except Exception as e:
            updated_history = {}
            sublime.error_message(
                dedent("""\
                       File History could not read your history file at '%s'.

                       %s: %s""")
                % (self.HISTORY_FILE, e.__class__.__name__, e)
            )
        self.history = updated_history

        # Do cleanup on the history file
        self.__ensure_project('global')
        trigger_save = False

        # Migrate old formatted timestamps and convert to POSIX
        hlist = updated_history['global']['closed'] or updated_history['global']['opened']
        if hlist and 'timestamp' in hlist[0] and not isinstance(hlist[0]['timestamp'], int):
            # Found an old timestamp. Likely that all others are old too
            self.debug("Found an old-style formatted timestamp. Migrating to POSIX")
            for project in updated_history.values():
                for key in ('closed', 'opened'):
                    for entry in project[key]:
                        if not isinstance(entry.get('timestamp', 0), int):
                            new_stamp = self.timestamp_from_string(entry['timestamp'])
                            if not new_stamp:
                                del entry['timestamp']
                            else:
                                entry['timestamp'] = new_stamp
            trigger_save = True
        # Remove actions keys
        if hlist and 'action' in hlist[0]:
            self.debug("Found an old-style action field. Cleaning up")
            trigger_save = True
            for project in updated_history.values():
                for key in ('closed', 'opened'):
                    for entry in project[key]:
                        if 'action' in entry:
                            del entry['action']

        if trigger_save:
            # Save the changes
            self.__save_history()
dataset/ETHPy150Open FichteFoll/FileHistory/file_history.py/FileHistory.__load_history/original