Add data for CC/TLV debugging

tests/encode_decode/01_info.yaml

@@ -15,6 +15,9 @@ regions:
     size: 35
     used_size: 1
 root:
+  cc_capacity: 312
+  ndef_tlv_payload_start: 8
+  ndef_tlv_payload_size: 303
   data_size: 312
   payload_size: 245
   overhead: 67

tests/encode_decode/02_info.yaml

@@ -15,6 +15,9 @@ regions:
     size: 35
     used_size: 1
 root:
+  cc_capacity: 312
+  ndef_tlv_payload_start: 8
+  ndef_tlv_payload_size: 303
   data_size: 312
   payload_size: 245
   overhead: 67

tests/encode_decode/04_info.yaml

@@ -15,6 +15,9 @@ regions:
     size: 35
     used_size: 1
 root:
+  cc_capacity: 312
+  ndef_tlv_payload_start: 8
+  ndef_tlv_payload_size: 303
   data_size: 312
   payload_size: 255
   overhead: 57

tests/encode_decode/05_info.yaml

@@ -15,6 +15,9 @@ regions:
     size: 35
     used_size: 1
 root:
+  cc_capacity: 312
+  ndef_tlv_payload_start: 8
+  ndef_tlv_payload_size: 303
   data_size: 312
   payload_size: 269
   overhead: 43

tests/specific/unknown_info_1.yaml

@@ -15,6 +15,9 @@ regions:
     size: 35
     used_size: 1
 root:
+  cc_capacity: 312
+  ndef_tlv_payload_start: 8
+  ndef_tlv_payload_size: 303
   data_size: 312
   payload_size: 269
   overhead: 43

tests/specific/unknown_info_2.yaml

@@ -15,6 +15,9 @@ regions:
     size: 35
     used_size: 1
 root:
+  cc_capacity: 312
+  ndef_tlv_payload_start: 8
+  ndef_tlv_payload_size: 303
   data_size: 312
   payload_size: 269
   overhead: 43

utils/rec_info.py

@@ -1,16 +1,16 @@
 import argparse
+import json
 import sys
-import yaml
-
-from record import Record
-from common import default_config_file
-from opt_check import opt_check
-from pathlib import Path
-import referencing
 import urllib.parse
+from pathlib import Path
+
 import jsonschema
 import jsonschema.validators
-import json
+import referencing
+import yaml
+from common import default_config_file
+from opt_check import opt_check
+from record import Record
 
 parser = argparse.ArgumentParser(prog="rec_info", description="Reads a record from the STDIN and prints various information about it in the YAML format")
 parser.add_argument("-c", "--config-file", type=str, default=default_config_file, help="Record configuration YAML file")
@@ -64,6 +64,7 @@
     if args.show_root_info:
         overhead = len(record.data) - len(record.payload)
         output["root"] = {
+            **record.root_info,
             "data_size": len(record.data),
             "payload_size": len(record.payload),
             "overhead": overhead,

utils/record.py

@@ -1,12 +1,12 @@
-import os
-import ndef
-import yaml
-import cbor2
 import io
+import os
 import types
 import typing
 
-from fields import Fields, EncodeConfig
+import cbor2
+import ndef
+import yaml
+from fields import EncodeConfig, Fields
 
 
 class Region:
@@ -99,13 +99,17 @@ class Record:
 
     regions: dict[str, Region] = None
 
+    # Debug information about the record - to be shown in the CLI if the user demands it
+    root_info: dict[str, typing.Any]
+
     encode_config: EncodeConfig
 
     def __init__(self, config_file: str, data: memoryview):
         assert type(data) is memoryview
 
         self.data = data
         self.encode_config = EncodeConfig()
+        self.root_info = dict()
 
         self.config_dir = os.path.dirname(config_file)
         with open(config_file, "r", encoding="utf-8") as f:
@@ -124,6 +128,8 @@ def __init__(self, config_file: str, data: memoryview):
                 # TODO: Support 8-byte CC (with a different magic)
                 assert cc[0] == 0xE1, "Capability container magic number does not match"
 
+                self.root_info["cc_capacity"] = cc[2] * 8
+
                 # Find the NDEF TLV
                 while True:
                     base_tlv = data_io.read(2)
@@ -143,7 +149,10 @@ def __init__(self, config_file: str, data: memoryview):
 
                     # 0x03 = NDEF TLV
                     if tag == 0x03:
-                        # Found it -
+                        # Found it
+
+                        self.root_info["ndef_tlv_payload_start"] = data_io.tell()
+                        self.root_info["ndef_tlv_payload_size"] = tlv_len
                         break
                     else:
                         # Skip the TLV block