Convert a number field to a python number.
(s)
| 174 | return s.decode(encoding, errors) |
| 175 | |
| 176 | def nti(s): |
| 177 | """Convert a number field to a python number. |
| 178 | """ |
| 179 | # There are two possible encodings for a number field, see |
| 180 | # itn() below. |
| 181 | if s[0] in (0o200, 0o377): |
| 182 | n = 0 |
| 183 | for i in range(len(s) - 1): |
| 184 | n <<= 8 |
| 185 | n += s[i + 1] |
| 186 | if s[0] == 0o377: |
| 187 | n = -(256 ** (len(s) - 1) - n) |
| 188 | else: |
| 189 | try: |
| 190 | s = nts(s, "ascii", "strict") |
| 191 | n = int(s.strip() or "0", 8) |
| 192 | except ValueError: |
| 193 | raise InvalidHeaderError("invalid header") |
| 194 | return n |
| 195 | |
| 196 | def itn(n, digits=8, format=DEFAULT_FORMAT): |
| 197 | """Convert a python number to a number field. |
no test coverage detected