Method open

engine/source/platformAndroid/AndroidFileio.cpp:172–281

----------------------------------------------------------------------------- Open a file in the mode specified by openMode (Read, Write, or ReadWrite). Truncate the file if the mode is either Write or ReadWrite and truncate is true. Sets capability appropriate to the openMode. Returns the currentStatus of the file. -----------------------------------------------------------------------------

// Returns the currentStatus of the file.
//-----------------------------------------------------------------------------
File::Status File::open(const char *filename, const AccessMode openMode)
{
	//If its a cache path then we need to open it using C methods not AssetManager
   if (isCachePath(filename) || isUserDataPath(filename))
   {
	  if (dStrlen(filename) > MAX_MAC_PATH_LONG)
	   	  Con::warnf("File::open: Filename length is pretty long...");

	  // Close the file if it was already open...
	  if (currentStatus != Closed)
	  close();

	  // create the appropriate type of file...
	  switch (openMode)
	  {
	  case Read:
         capability = FileRead;
         filePointer = 0;
         buffer = (U8*)_AndroidLoadInternalFile(filename, &size);
         if (buffer == NULL)
            currentStatus = UnknownError;
         else
            currentStatus = Ok;
         return currentStatus;
		 break;
	  case Write:
		 handle = (void *)fopen(filename, "wb"); // write only
		 break;
	  case ReadWrite:
		 handle = (void *)fopen(filename, "ab+"); // write(append) and read
		 break;
	  case WriteAppend:
		 handle = (void *)fopen(filename, "ab"); // write(append) only
		 break;
	  default:
		 AssertFatal(false, "File::open: bad access mode");
	  }

	  // handle not created successfully
	  if (handle == NULL)
	  return setStatus();

	  // successfully created file, so set the file capabilities...
	  switch (openMode)
	  {
	  case Read:
		 capability = FileRead;
		 break;
	  case Write:
	  case WriteAppend:
		 capability = FileWrite;
		 break;
	  case ReadWrite:
		 capability = FileRead | FileWrite;
		 break;
	  default:
		 AssertFatal(false, "File::open: bad access mode");
	  }