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pySim-shell: add "dir" command.

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pysim-shell does not have a convinient way to list the files available
in one directory. Tab completion currently is the only way to obtain a
list of the available files. Lets add a dir command to print a file
list.

Change-Id: Ic06a60e0a0ec54d9bb26e151453ceb49d69e3df7
Related: OS#4963
This commit is contained in:
Philipp Maier
2021-02-22 17:22:16 +01:00
parent bd8ed2c4db
commit 5d3e2592f7
2 changed files with 52 additions and 1 deletions
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31
pySim-shell.py
View File

@@ -38,7 +38,7 @@ from pySim.exceptions import *
from pySim.commands import SimCardCommands
from pySim.cards import card_detect, Card
from pySim.utils import h2b, swap_nibbles, rpad, h2s
from pySim.utils import dec_st, init_reader, sanitize_pin_adm
from pySim.utils import dec_st, init_reader, sanitize_pin_adm, tabulate_str_list
from pySim.card_handler import card_handler
from pySim.filesystem import CardMF, RuntimeState
@@ -112,6 +112,35 @@ class Iso7816Commands(CommandSet):
(data, sw) = self._cmd.card._scc.verify_chv(opts.chv_nr, opts.code)
self._cmd.poutput(data)
dir_parser = argparse.ArgumentParser()
dir_parser.add_argument('--fids', help='Show file identifiers', action='store_true')
dir_parser.add_argument('--names', help='Show file names', action='store_true')
dir_parser.add_argument('--apps', help='Show applications', action='store_true')
dir_parser.add_argument('--all', help='Show all selectable identifiers and names', action='store_true')
@cmd2.with_argparser(dir_parser)
def do_dir(self, opts):
"""Show a listing of files available in currently selected DF or MF"""
if opts.all:
flags = []
elif opts.fids or opts.names or opts.apps:
flags = ['PARENT', 'SELF']
if opts.fids:
flags += ['FIDS', 'AIDS']
if opts.names:
flags += ['FNAMES', 'ANAMES']
if opts.apps:
flags += ['ANAMES', 'AIDS']
else:
flags = ['PARENT', 'SELF', 'FNAMES', 'ANAMES']
selectables = list(self._cmd.rs.selected_file.get_selectable_names(flags = flags))
directory_str = tabulate_str_list(selectables, width = 79, hspace = 2, lspace = 1, align_left = True)
path_list = self._cmd.rs.selected_file.fully_qualified_path(True)
self._cmd.poutput('/'.join(path_list))
path_list = self._cmd.rs.selected_file.fully_qualified_path(False)
self._cmd.poutput('/'.join(path_list))
self._cmd.poutput(directory_str)
self._cmd.poutput("%d files" % len(selectables))

22
pySim/utils.py
View File

@@ -794,3 +794,25 @@ def sw_match(sw, pattern):
else:
sw_masked = sw_masked + sw_lower[i]
return sw_masked == pattern
def tabulate_str_list(str_list, width = 79, hspace = 2, lspace = 1, align_left = True):
"""Pretty print a list of strings into a tabulated form"""
if str_list == None:
return ""
if len(str_list) <= 0:
return ""
longest_str = max(str_list, key=len)
cellwith = len(longest_str) + hspace
cols = width // cellwith
rows = (len(str_list) - 1) // cols + 1
table = []
for i in iter(range(rows)):
str_list_row = str_list[i::rows]
if (align_left):
format_str_cell = '%%-%ds'
else:
format_str_cell = '%%%ds'
format_str_row = (format_str_cell % cellwith) * len(str_list_row)
format_str_row = (" " * lspace) + format_str_row
table.append(format_str_row % tuple(str_list_row))
return '\n'.join(table)