Function BrowserLoadFile

source/filebrowser.cpp:520–611

* BrowserLoadFile * * Loads the selected ROM ***************************************************************************/

 * Loads the selected ROM
 ***************************************************************************/
int BrowserLoadFile()
{
	char filepath[1024];
	size_t filesize = 0;
	romLoaded = false;

	int device;
			
	if(!FindDevice(browser.dir, &device))
		return 0;

	// check that this is a valid ROM
	if(!IsValidROM())
		goto done;

	loadingFile = true;

	if(!inSz)
	{
		if(!MakeFilePath(filepath, FILE_ROM))
			goto done;

		filesize = LoadFile ((char *)nesrom, filepath, 0, (1024*1024*4), NOTSILENT);

		if(filesize > 0) {
			// check nesrom for PocketNES embedded roms
			const char *ext = strrchr(filepath, '.');
			if (ext != NULL && strcmp(ext, ".gba") == 0)
			{
				const pocketnes_romheader* rom1 = pocketnes_first_rom(nesrom, filesize);
				const pocketnes_romheader* rom2 = NULL;
				if (rom1 != NULL) {
					rom2 = pocketnes_next_rom(nesrom, filesize, rom1);
				}

				if (rom1 == NULL)
					ErrorPrompt("No NES ROMs found in this file.");
				else if (rom2 != NULL)
					ErrorPrompt("More than one NES ROM found in this file. Only files with one ROM are supported.");
				else
				{
					const void* rom = rom1 + 1;
					filesize = little_endian_conv_32(rom1->filesize);
					memcpy(nesrom, rom, filesize);
				}
			}
		}
	}
	else
	{
		filesize = LoadSzFile(szpath, nesrom);

		if(filesize <= 0)
		{
			browser.selIndex = 0;
			BrowserChangeFolder();
		}
	}