Correctly handle RRSIG records, converting numeric type codes into their textual equivalents

src/helpers.py

@@ -143,7 +143,8 @@ def export_all_zones(trigger_path: str = "filesystem-change") -> list[Path]:
     return written_files
 
 
-def replace_type_codes(content):
+def validate_zone(zone_name, content) -> bool:
+    def replace_type_codes(content):
         pattern = re.compile(r'(RRSIG\s+)(\d+)(\s+)')
 
         def repl(match):
@@ -157,8 +158,6 @@ def replace_type_codes(content):
 
         return pattern.sub(repl, content)
 
-
-def validate_zone(zone_name, content) -> bool:
     try:
         dns.zone.from_text(replace_type_codes(content), zone_name + '.', relativize=False)
         logging.info(f"Zone {zone_name} parsed successfully")