C++ EMUFILE::fail方法代码示例

void BackupDevice::flush()
{
	//never use save files if we are in movie mode
	if(isMovieMode) return;

	if (filename.length() == 0) return;

	EMUFILE* outf = new EMUFILE_FILE(filename.c_str(),"wb");
	if(!outf->fail())
	{
		if(data.size()>0)
			outf->fwrite(&data[0],data.size());
		
		//write the footer. we use a footer so that we can maximize the chance of the
		//save file being recognized as a raw save file by other emulators etc.
		
		//first, pad up to the next largest known save size.
		u32 size = data.size();
		u32 padSize = pad_up_size(size);

		for(u32 i=size;i<padSize;i++)
			outf->fputc(kUninitializedSaveDataValue);

		//this is just for humans to read
		outf->fprintf("|<--Snip above here to create a raw sav by excluding this DeSmuME savedata footer:");

		//and now the actual footer
		write32le(size,outf); //the size of data that has actually been written
		write32le(padSize,outf); //the size we padded it to
		write32le(info.type,outf); //save memory type
		write32le(addr_size,outf);
		write32le(info.size,outf); //save memory size
		write32le(0,outf); //version number
		outf->fprintf("%s", kDesmumeSaveCookie); //this is what we'll use to recognize the desmume format save

		delete outf;
	}
	else
	{
		delete outf;
		printf("Unable to open savefile %s\n", filename.c_str());
	}
}

	virtual void connect()
	{
		Close();
		romSize = 0;
		sramSize = 0;
		
		if (gameInfo.romsize == 0)
		{
			return;
		}
		
		if (GBACartridge_RomPath.empty())
		{
			return;
		}
		
		if (!strcasecmp(GBACartridge_RomPath.c_str(), "self"))
		{
			GBACartridge_RomPath = path.path;
			GBACartridge_SRAMPath = Path::GetFileNameWithoutExt(GBACartridge_RomPath) + "." + GBA_SRAM_FILE_EXT;
		}
		
		printf("GBASlot opening ROM: %s\n", GBACartridge_RomPath.c_str());
		EMUFILE_FILE *inf = new EMUFILE_FILE(GBACartridge_RomPath, "rb");
		inf->EnablePositionCache();
		fROM = inf;
		if (fROM->fail())
		{
			printf(" - Failed\n");
			Close();
			
			return;
		}
		
		romSize = fROM->size();
		printf(" - Success (%u bytes)\n", romSize);
		
		// Load the GBA cartridge SRAM.
		inf = new EMUFILE_FILE(GBACartridge_SRAMPath, "rb+");
		fSRAM = inf;
		if(fSRAM->fail())
		{
			delete fSRAM;
			fSRAM = NULL;
			printf("GBASlot did not load associated SRAM.\n");
		}
		else
		{
			inf->EnablePositionCache();
			sramSize = fSRAM->size();
			printf("Scanning GBA rom to ID save type\n");
			saveType = scanSaveTypeGBA();
			printf("\nGBASlot found SRAM (%s - %u bytes) at:\n%s\n", (saveType == 0xFF)?"Unknown":saveTypes[saveType], sramSize, GBACartridge_SRAMPath.c_str());
			gbaFlash.size = sramSize;
			if (gbaFlash.size <= (64 * 1024))
			{
				gbaFlash.idDevice = 0x1B;
				gbaFlash.idManufacturer = 0x32;
			}
			else
			{
				gbaFlash.idDevice = 0x09;
				gbaFlash.idManufacturer = 0xC2;
			}
			gbaFlash.state = 0;
		}
	}