Function LoadFile

source/fileop.cpp:846–934

* LoadFile ***************************************************************************/

 * LoadFile
 ***************************************************************************/
size_t
LoadFile (char * rbuffer, char *filepath, size_t length, size_t buffersize, bool silent)
{
	char zipbuffer[2048];
	size_t size = 0, offset = 0, readsize = 0;
	int retry = 1;
	int device;

	if(!FindDevice(filepath, &device))
		return 0;

	// stop checking if devices were removed/inserted
	// since we're loading a file
	HaltDeviceThread();

	// halt parsing
	HaltParseThread();

	// open the file
	while(retry)
	{
		if(!ChangeInterface(device, silent))
			break;

		file = fopen (filepath, "rb");

		if(!file)
		{
			if(silent)
				break;

			retry = ErrorPromptRetry("Error opening file!");
			continue;
		}

		if(length > 0 && length <= 2048) // do a partial read (eg: to check file header)
		{
			size = fread (rbuffer, 1, length, file);
		}
		else // load whole file
		{
			readsize = fread (zipbuffer, 1, 32, file);

			if(!readsize)
			{
				unmountRequired[device] = true;
				retry = ErrorPromptRetry("Error reading file!");
				fclose (file);
				continue;
			}

			if (IsZipFile (zipbuffer))
			{
				size = UnZipBuffer ((unsigned char *)rbuffer, buffersize); // unzip
			}
			else
			{
				fseeko(file,0,SEEK_END);