Support for SR TXT files

src/mercury_engine_data_structures/formats/txt.py

@@ -2,8 +2,10 @@
 from typing import Dict
 
 import construct
+from construct import IfThenElse
 from construct.core import Const, Construct, GreedyRange, Struct
 
+from mercury_engine_data_structures import game_check
 from mercury_engine_data_structures.common_types import DictAdapter, DictElement
 from mercury_engine_data_structures.construct_extensions.strings import CStringRobust
 from mercury_engine_data_structures.formats import BaseResource
@@ -38,7 +40,11 @@ def _parse_{n}(io, this):
 
 TXT = Struct(
     "magic" / Const(b'BTXT'),
-    "version" / Const(b'\x01\x00\x0a\x00'),
+    "version" / IfThenElse(
+        game_check.current_game_at_most(Game.SAMUS_RETURNS),
+        Const(b'\x01\x00\x08\x00'),
+        Const(b'\x01\x00\x0a\x00'),
+    ),
     "strings" / DictAdapter(_string_range),
     "_end" / construct.Terminated,
 )
@@ -48,7 +54,7 @@ class Txt(BaseResource):
     @classmethod
     @functools.lru_cache
     def construct_class(cls, target_game: Game) -> Construct:
-        return TXT.compile()
+        return TXT
 
     @property
     def strings(self) -> Dict[str, str]:

tests/formats/test_txt.py

@@ -9,3 +9,9 @@ def test_compare_dread(dread_path):
     parse_and_build_compare(
         TXT, Game.DREAD, file_path
     )
+
+def test_compare_sr(samus_returns_path):
+    file_path = samus_returns_path.joinpath("system/localization/us_english.txt")
+    parse_and_build_compare(
+        TXT, Game.SAMUS_RETURNS, file_path
+    )