# -*- coding: utf-8 -*-
"""Transport Layer Protocol Numbers
======================================
.. module:: pcapkit.vendor.reg.transtype
This module contains the vendor crawler for **Transport Layer Protocol Numbers**,
which is automatically generating :class:`pcapkit.const.reg.transtype.TransType`.
"""
import collections
import csv
import re
import sys
from typing import TYPE_CHECKING
from pcapkit.vendor.default import Vendor
if TYPE_CHECKING:
from collections import Counter
__all__ = ['TransType']
[docs]
class TransType(Vendor):
"""Transport Layer Protocol Numbers"""
#: Value limit checker.
FLAG = 'isinstance(value, int) and 0 <= value <= 255'
#: Link to registry.
LINK = 'https://www.iana.org/assignments/protocol-numbers/protocol-numbers-1.csv'
def count(self, data: 'list[str]') -> 'Counter[str]':
"""Count field records.
Args:
data: CSV data.
Returns:
Field recordings.
"""
reader = csv.reader(data)
next(reader) # header
return collections.Counter(map(lambda item: self.safe_name(item[1] or item[2]),
filter(lambda item: len(item[0].split('-')) != 2, reader)))
def process(self, data: 'list[str]') -> 'tuple[list[str], list[str]]':
"""Process CSV data.
Args:
data: CSV data.
Returns:
Enumeration fields and missing fields.
"""
reader = csv.reader(data)
next(reader) # header
enum = [] # type: list[str]
miss = [] # type: list[str]
for item in reader:
long = item[1]
rfcs = item[4]
temp = [] # type: list[str]
for rfc in filter(None, re.split(r'\[|\]', rfcs)):
if 'RFC' in rfc and re.match(r'\d+', rfc[3:]):
#temp.append(f'[{rfc[:3]} {rfc[3:]}]')
temp.append(f'[:rfc:`{rfc[3:]}`]')
else:
temp.append(f'[{rfc}]'.replace('_', ' '))
lrfc = re.sub(r'( )( )*', ' ', f" {''.join(temp)}".replace('\n', ' ')) if rfcs else ''
subd = re.sub(r'( )( )*', ' ', item[2].replace('\n', ' '))
tmp1 = subd if item[2] else ''
split = long.split(' (', 1)
if len(split) == 2:
name, cmmt = split[0], f" ({split[1]})"
else:
name, cmmt = long, ''
if not name:
name, desc = item[2], ''
desc = self.wrap_comment(f'{tmp1}{cmmt}{lrfc}')
try:
code, _ = item[0], int(item[0])
renm = self.rename(name, code, original=long)
pres = f"{renm} = {code}"
sufs = f"#: {desc}"
# if len(pres) > 74:
# sufs = f"\n{' '*80}{sufs}"
# enum.append(f'{pres.ljust(76)}{sufs}')
enum.append(f'{sufs}\n {pres}')
except ValueError:
start, stop = item[0].split('-')
miss.append(f'if {start} <= value <= {stop}:')
miss.append(f' #: {desc}')
miss.append(f" return extend_enum(cls, '{name}_%d' % value, value)")
return enum, miss
if __name__ == '__main__':
sys.exit(TransType()) # type: ignore[arg-type]