Wrapper to turn romfs_file into romfs_fileobj

Useful for turning romfs_direntry files into readable files

nx/include/switch/runtime/devices/romfs_dev.h

@@ -161,6 +161,14 @@ Result romfsFindFile(const char *path, romfs_fileobj *file);
  */
 Result romfsFindFileInMount(romfs_mount *mount, const char *path, romfs_fileobj *file);
 
+/**
+ * @brief Wrapper function for turning a romfs_file into a romfs_fileobj to be operated on, this
+ *        is useful for creating readable files from a romfs_direntry
+ * @param mount The mount the file came from
+ * @param file The file information
+ */
+romfs_fileobj romfsFileObj(romfs_mount *mount, romfs_file *file);
+
 /**
  * @brief Reads data from the specified RomFS file.
  * @param file The RomFS file to read from.

nx/source/runtime/devices/romfs_dev.c

@@ -685,6 +685,16 @@ Result romfsFindFileInMount(romfs_mount *mount, const char *path, romfs_fileobj
     return 0;
 }
 
+romfs_fileobj romfsFileObj(romfs_mount *mount, romfs_file *file)
+{
+    romfs_fileobj result = { 0 };
+    result.mount  = mount;
+    result.file   = file;
+    result.offset = mount->header.fileDataOff + file->dataOff;
+
+    return result;
+}
+
 Result romfsReadFile(romfs_fileobj *file, void *buffer, u64 size, u64 offset, u64 *nread)
 {
     if (nread == NULL || file == NULL || buffer == NULL)