LADX: generate without rom (#4278)

worlds/ladx/LADXR/rom.py

@@ -7,9 +7,7 @@ h2b = binascii.unhexlify
 
 
 class ROM:
-    def __init__(self, filename, patches=None):
-        data = open(Utils.user_path(filename), "rb").read()
-
+    def __init__(self, data, patches=None):
         if patches:
             for patch in patches:
                 data = bsdiff4.patch(data, patch)
@@ -64,18 +62,10 @@ class ROM:
         self.banks[0][0x14E] = checksum >> 8
         self.banks[0][0x14F] = checksum & 0xFF
 
-    def save(self, file, *, name=None):
+    def save(self):
         # don't pass the name to fixHeader
         self.fixHeader()
-        if isinstance(file, str):
-            f = open(file, "wb")
-            for bank in self.banks:
-                f.write(bank)
-            f.close()
-            print("Saved:", file)
-        else:
-            for bank in self.banks:
-                file.write(bank)
+        return b"".join(self.banks)
 
     def readHexSeed(self):
         return self.banks[0x3E][0x2F00:0x2F10].hex().upper()