txt_to_bin_st_nfc_conf.py

#!/usr/bin/env python3

import io
import sys

txt_conf = sys.argv[1]
bin_conf = sys.argv[2]

with open(txt_conf, 'r', encoding='utf-8') as f:
    data = f.read()
    f.seek(0, io.SEEK_SET)
    data_lines = f.readlines()

assert data[0] == 'R'
assert data[11] == 'C'
assert data[12] == 'R'

crc = data[18:22]
crc = int(crc, 16)

buf = bytearray()

buf.append(crc >> 8)
buf.append(crc & 0xff)

for line in data_lines[1:]:
    line = line.strip()

    if not line:
        continue

    skip = 0
    if line.startswith('NCI_SEND_PROP'):
        skip = 20
    elif line.startswith('NCI_DIRECT_CTRL'):
        skip = 22

    if skip:
        # print(f'skip: {line[:skip]}')
        pass

    line = line[skip:]

    n = ''
    payload = bytearray()
    invalid = False
    for c in line:
        c = c.strip()
        if not c:
            continue

        try:
            int(c, 16)
        except ValueError:
            print(f'invalid: {line}')
            invalid = True
            break

        n += c

        if len(n) == 2:
            v = int(n, 16)
            payload.append(v)
            n = ''

    if invalid:
        continue

    buf.append(0x2f)
    buf.append(0x02)
    buf.append(len(payload))
    buf.extend(payload)

with open(bin_conf, 'wb') as f:
    f.write(buf)