From 0c840f0aab3f4554003ce4467c721c3895022205 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Fri, 21 Jan 2022 15:42:22 +0100
Subject: [PATCH] ts_102_221: decode/encode EF.PL

pySIM-shell (MF/EF.PL)> read_binary_decoded
[
    "en",
    null,
    null,
    null,
    null
]

Change-Id: I4e879ef34acee461adb8137a6315d064370b1b10
---
 pySim/ts_102_221.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/pySim/ts_102_221.py b/pySim/ts_102_221.py
index f145d19a..7cc3025d 100644
--- a/pySim/ts_102_221.py
+++ b/pySim/ts_102_221.py
@@ -503,6 +503,17 @@ class EF_ICCID(TransparentEF):
 class EF_PL(TransRecEF):
     def __init__(self, fid='2f05', sfid=0x05, name='EF.PL', desc='Preferred Languages'):
         super().__init__(fid, sfid=sfid, name=name, desc=desc, rec_len=2, size={2,None})
+    def _decode_record_bin(self, bin_data):
+        if bin_data == b'\xff\xff':
+            return None
+        else:
+            return bin_data.decode('ascii')
+    def _encode_record_bin(self, in_json):
+        if in_json is None:
+            return b'\xff\xff'
+        else:
+            return in_json.encode('ascii')
+
 
 # TS 102 221 Section 13.4
 class EF_ARR(LinFixedEF):