converter_fileparser.py

#!/usr/bin/env python3
########################################################################
#
# COPYRIGHT NovAtel Inc, 2022. All rights reserved.
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# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
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# furnished to do so, subject to the following conditions:
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########################################################################
#                            DESCRIPTION
#
# \file converter_fileparser.py
# \brief Demonstrate how to use the Python API for converting OEM
# messages using the FileParser.
########################################################################

import logging
import timeit

from novatel_edie import UnknownBytes
import novatel_edie.oem as oem
import novatel_edie.oem.messages as oem_msgs

from common_setup import setup_example_logging, handle_args

def main():
    """Example FileParser usage."""
    # Setup logging
    setup_example_logging(logging.WARNING)
    logger = logging.getLogger(__name__)
    logger.info(f"Decoder library information:\n{ne.CPP_PRETTY_VERSION}")

    # Handle CLI arguments
    input_file, encode_format = handle_args(logger)

    # Create a FileParser
    file_parser = oem.FileParser(input_file)

    # Setup a custom filter here
    my_filter = oem.Filter()
    file_parser.filter = my_filter

    # Iterate through the messages
    messages = 0
    msgs = []
    start = timeit.default_timer()
    observation_list = []
    for message in file_parser:
        # Handle messages that can be fully decoded
        if isinstance(message, oem.Message):
            # Encode the message into different formats
            encoded_msg = message.encode(encode_format)
            ascii_msg = message.to_ascii()
            binary_msg = message.to_binary()
            dict_msg = message.to_dict()
            messages += 1
            # Handle BESTPOS messages
            if isinstance(message, oem_msgs.BESTPOS):
                # Access specific fields
                lat = message.latitude
                lon = message.longitude
            elif isinstance(message, oem_msgs.RANGE):
                pass
                msgs.append(message.obs)
                if len(msgs) >= 10000:
                    break
        # Handle messages that did not match any known definitions
        elif isinstance(message, oem.UnknownMessage):
            unknown_id = message.header.message_id
            payload = message.payload
        # Handle bytes that could not be parsed into a message
        elif isinstance(message, UnknownBytes):
            data = message.data
    pass

    elapsed_seconds = timeit.default_timer() - start
    logger.info(f"Converted {messages} logs in {elapsed_seconds:.3f}s from {input_file}")



if __name__ == "__main__":
    main()