This will replace the hand-crafted codec for EF_SPN
by a struct definition using the construct library.
Old encoders are updated and kept for API compatibility
but are not used internally anymore.
New data structures:
* Rpad(Adapter): Right-padded bytestring (0xff, adjustable)
* GsmStringAdapter(Adapter): Codec for "SMS default 7-bit
coded alphabet as defined int TS 23.038" using
the gsm0338 library.
* GsmString(n): Convenient wrapper of both above
Adjustments:
* utils: update+deprecate old dec_spn(), enc_spn()
* remove refs to deprecated functions
Change-Id: Ia1d3a3835933bac0002b7c52511481dd8094b994
Also serves as example for RFU (reserved for future use) fields
which should not always be reset to zero in case they have been
set on the uSIM for some reason.
See pySim/ts_51_011.py, class EF_AD.
* Add definitions for RFU {Flag, Bits, Byte, Bytes}
* Use IntEnum for OP_MODE (convenient auto completion)
* Remove obsolete definitions and imports
* Update test results for all SIMs (opmode strings are shortened)
Change-Id: I65e0a426f80a619fec38856a30e590f0e726b554
'construct' is a declarative symmetric encoder/decoder for user
specified binary formats. It should come in extremely handy in
tools like pySim.
We start the integration by adding transport methods for transceiving
APDUs with built-in encoding of the command data and decoding of the
response data.
Change-Id: Ibf457aa8b9480a8db5979defcfafd67674303f6c
