moved MSF magic checkers to msf.c

src/msf/msf.c

@@ -1,4 +1,16 @@
 // Copyright (c) 2024 Epic Games Tools
 // Licensed under the MIT license (https://opensource.org/license/mit/)
 
+internal B32
+msf_check_magic_20(String8 data)
+{
+  B32 is_msf = data.size >= sizeof(msf_msf20_magic) && str8_match(data, str8_lit(msf_msf20_magic), StringMatchFlag_RightSideSloppy);
+  return is_msf;
+}
 
+internal B32
+msf_check_magic_70(String8 data)
+{
+  B32 is_msf = data.size >= sizeof(msf_msf70_magic) && str8_match(data, str8_lit(msf_msf70_magic), StringMatchFlag_RightSideSloppy);
+  return is_msf;
+}

src/msf/msf.h

@@ -52,4 +52,9 @@ struct MSF_Header70
   MSF_PageNumber root_pn;
 };
 
+////////////////////////////////
+
+internal B32 msf_check_magic_20(String8 data);
+internal B32 msf_check_magic_70(String8 data);
+
 #endif // MSF_H

src/msf/msf_parse.c

@@ -13,11 +13,9 @@ msf_raw_stream_table_from_data(Arena *arena, String8 msf_data)
   
   //- determine msf type
   U32 index_size = 0;
-  if (msf_data.size >= sizeof(msf_msf20_magic) &&
+  if (msf_check_magic_20(msf_data)) {
-      str8_match(msf_data, str8_lit(msf_msf20_magic), StringMatchFlag_RightSideSloppy)) {
     index_size = 2;
-  } else if (msf_data.size >= sizeof(msf_msf70_magic) && 
+  } else if (msf_check_magic_70(msf_data)) {
-             str8_match(msf_data, str8_lit(msf_msf70_magic), StringMatchFlag_RightSideSloppy)) {
     index_size = 4;
   }