Change in pysim[master]: pySim-shells: complete CHV/PIN management tools

[laforge]

laforge has posted comments on this change. ( https://gerrit.osmocom.org/c/pysim/+/23541 )

Change subject: pySim-shells: complete CHV/PIN management tools
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Patch Set 1:

(1 comment)

https://gerrit.osmocom.org/c/pysim/+/23541/1/pySim/commands.py 
File pySim/commands.py:

https://gerrit.osmocom.org/c/pysim/+/23541/1/pySim/commands.py@245 
PS1, Line 245: RuntimeError('Failed to change chv_no 0x%02X with code 0x%s, %i tries left.' % (chv_no, b2h(pin_code).upper(), int(sw[3])))
I'm seeing so many repetitions of this line and the arguments, and the functions converting the arguments.  It may make sense to create a derived ChvRuntimeError class, to which you simply pass arguments without conversion, like
    raise ChvRuntimeError('change', chv_no, pin_code, sw)

and leaving all the conversion and string formatting to the Exception class. Looks much more structured, IMHO.

Actually, all of the surrounding code (if sw_match ... elsif 9000, ...) is copy+pasted, too.  So rather than the above (or in addition to it) you can create a function that does all of this  something like 

def _chv_process_sw(chv_no, pin_code, sw):
   if sw_match(sw, '63xcx'):
       ....
   elif (sw != '9000'):
       raise ...
   return (data, sw)

And then use return _chv_process_sw(chv_no, pin_code, sw) in all of these functions.



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Gerrit-Project: pysim
Gerrit-Branch: master
Gerrit-Change-Id: Ic89446e6bd2021095e579fb6b20458df48ba6413
Gerrit-Change-Number: 23541
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <pmaier at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-CC: laforge <laforge at osmocom.org>
Gerrit-Comment-Date: Mon, 29 Mar 2021 20:55:45 +0000
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