fix: check emudeck folders by any file

An EmuDeck entry names no file: the system passes when any file
directly in the BIOS folder has one of its md5, as checkBIOS.sh loops
over "$biosPath/"*. The script looked each one up as a file named
system:md5 and reported 134 of 170 entries missing.

scripts/check_platform_folder.py

@@ -14,49 +14,50 @@ from pathlib import Path
 API = "https://abdess.github.io/retrobios/api/v1/platforms/"
 
 
-# The digest each check mode compares. A mode missing here (existence) only
-# asks that the file be present.
+# The digest each mode compares. Without one (existence) a file need only be present.
 DIGESTS = {"md5": "md5", "sha1": "sha1"}
 
 
 def accepts(entry: dict, path: Path, mode: str) -> bool:
     """Whether the platform's own check passes the file at path."""
-    digest = DIGESTS.get(mode)
-    raw = entry.get(mode) or ""
-    values = raw if isinstance(raw, list) else str(raw).split(",")
-    declared = [value.strip().lower() for value in values if value.strip()]
-    if digest is None or not declared:
+    digest, raw = DIGESTS.get(mode), entry.get(mode) or ""
+    values = [v.strip().lower() for v in (raw if isinstance(raw, list) else str(raw).split(",")) if v.strip()]
+    if digest is None or not values:
         return path.is_file()  # nothing to compare: the platform checks presence
     try:
         if entry.get("zipped_file"):  # the hash of one member, its name casefolded
             with zipfile.ZipFile(path) as archive:
                 names = {name.casefold(): name for name in archive.namelist()}
                 member = names.get(entry["zipped_file"].casefold())
-                return bool(member) and hashlib.new(digest, archive.read(member)).hexdigest() in declared
+                return bool(member) and hashlib.new(digest, archive.read(member)).hexdigest() in values
         actual = hashlib.new(digest, path.read_bytes()).hexdigest()
-        if entry.get("zip_digest") != "composite" and any(actual.startswith(d) for d in declared):
+        if entry.get("zip_digest") != "composite" and any(actual.startswith(v) for v in values):
             return True  # a truncated md5 (Batocera) compares by its prefix
         if digest == DIGESTS["md5"] and path.suffix.lower() == ".zip":  # Recalbox: members in name order
             with zipfile.ZipFile(path) as archive:
                 names = sorted(name for name in archive.namelist() if not name.endswith("/"))
-                return hashlib.md5(b"".join(map(archive.read, names))).hexdigest() in declared
+                return hashlib.md5(b"".join(map(archive.read, names))).hexdigest() in values
     except (OSError, zipfile.BadZipFile):
         return False
     return False
 
 
 def check(platform: str, root: Path, api: str = API) -> list[tuple[str, str]]:
-    """(destination, ok | wrong | missing) for each entry of the list."""
+    """(destination, ok | wrong | missing) for each entry. Entries with no destination
+    (EmuDeck) name no file: their system passes when any file in root has their hash."""
     with urllib.request.urlopen(f"{api}{platform}.json") as response:
         contract = json.load(response)["items"][0]["contract"]
-    mode = contract["verification_mode"]
-    results = []
-    for system in contract["systems"].values():
-        for entry in system.get("files") or []:
-            destination = entry.get("destination") or entry["name"]
-            path = root / destination
+    mode, results = contract["verification_mode"], []
+    loose = [path for path in root.iterdir() if path.is_file()] if root.is_dir() else []
+    for system_id, system in contract["systems"].items():
+        listed = [e for e in system.get("files") or [] if not e.get("destination")]
+        for entry in (e for e in system.get("files") or [] if e.get("destination")):
+            path = root / entry["destination"]
             verdict = "ok" if accepts(entry, path, mode) else "wrong" if path.is_file() else "missing"
-            results.append((destination, verdict))
+            results.append((entry["destination"], verdict))
+        if listed:
+            held = any(accepts(e, path, mode) for e in listed for path in loose)
+            results.append((f"{system_id}: any file", "ok" if held else "missing"))
     return results