tools/gnmsg/read_parts.py

#!/usr/local/bin/python3

# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from read_values import (
    call_reader_function,
    parse_key_or_value,
    read_byte_value,
    read_cacheable,
    read_int_value,
    read_short_value,
    read_unsigned_byte_value,
    read_unsigned_vl,
    read_string_value,
)
from numeric_conversion import int_to_hex_string


def read_object_header(message_bytes, offset):
    object_base = {}
    (object_base["Size"], offset) = call_reader_function(
        message_bytes, offset, read_int_value
    )
    (object_base["IsObject"], offset) = call_reader_function(
        message_bytes, offset, read_byte_value
    )
    return object_base, offset


def read_object_part(message_bytes, offset):
    object_part, offset = read_object_header(message_bytes, offset)

    offset += 2 * object_part["Size"]
    return object_part, offset


def read_int_part(message_bytes, offset):
    int_part, offset = read_object_header(message_bytes, offset)

    int_value, offset = call_reader_function(message_bytes, offset, read_int_value)
    int_part["Value"] = int_to_hex_string(int_value)
    return int_part, offset