C++ (Cpp) VDFileGetRootPath Examples

Example #1

File: oshelper.cpp Project: KGE-INC/VirtualDub

bool IsFilenameOnFATVolume(const wchar_t *pszFilename) {
	VDStringW rootPath(VDFileGetRootPath(pszFilename));

	if (VDIsWindowsNT()) {
		DWORD dwMaxComponentLength;
		DWORD dwFSFlags;
		wchar_t szFilesystem[MAX_PATH];

		if (!GetVolumeInformationW(rootPath.c_str(),
				NULL, 0,		// Volume name buffer
				NULL,			// Serial number buffer
				&dwMaxComponentLength,
				&dwFSFlags,
				szFilesystem,
				MAX_PATH))
			return false;

		return !_wcsnicmp(szFilesystem, L"FAT", 3);
	} else {
		DWORD dwMaxComponentLength;
		DWORD dwFSFlags;
		char szFilesystem[MAX_PATH];

		if (!GetVolumeInformationA(VDTextWToA(rootPath).c_str(),
				NULL, 0,		// Volume name buffer
				NULL,			// Serial number buffer
				&dwMaxComponentLength,
				&dwFSFlags,
				szFilesystem,
				sizeof szFilesystem))
			return false;

		return !_strnicmp(szFilesystem, "FAT", 3);
	}
}

Example #2

File: filesys.cpp Project: Grimace1975/mpc-hc

sint64 VDGetDiskFreeSpace(const wchar_t *path) {
    typedef BOOL (WINAPI *tpGetDiskFreeSpaceExA)(LPCSTR lpDirectoryName, PULARGE_INTEGER lpFreeBytesAvailable, PULARGE_INTEGER lpTotalNumberOfBytes, PULARGE_INTEGER lpTotalNumberOfFreeBytes);
    typedef BOOL (WINAPI *tpGetDiskFreeSpaceExW)(LPCWSTR lpDirectoryName, PULARGE_INTEGER lpFreeBytesAvailable, PULARGE_INTEGER lpTotalNumberOfBytes, PULARGE_INTEGER lpTotalNumberOfFreeBytes);

    static bool sbChecked = false;
    static tpGetDiskFreeSpaceExA spGetDiskFreeSpaceExA;
    static tpGetDiskFreeSpaceExW spGetDiskFreeSpaceExW;

    if (!sbChecked) {
        HMODULE hmodKernel = GetModuleHandle("kernel32.dll");
        spGetDiskFreeSpaceExA = (tpGetDiskFreeSpaceExA)GetProcAddress(hmodKernel, "GetDiskFreeSpaceExA");
        spGetDiskFreeSpaceExW = (tpGetDiskFreeSpaceExW)GetProcAddress(hmodKernel, "GetDiskFreeSpaceExW");

        sbChecked = true;
    }

    if (spGetDiskFreeSpaceExA) {
        BOOL success;
        uint64 freeClient, totalBytes, totalFreeBytes;
        VDStringW directoryName(path);

        if (!directoryName.empty()) {
            wchar_t c = directoryName[directoryName.length()-1];

            if (c != L'/' && c != L'\\')
                directoryName += L'\\';
        }

        if ((LONG)GetVersion() < 0)
            success = spGetDiskFreeSpaceExA(VDTextWToA(directoryName).c_str(), (PULARGE_INTEGER)&freeClient, (PULARGE_INTEGER)&totalBytes, (PULARGE_INTEGER)&totalFreeBytes);
        else
            success = spGetDiskFreeSpaceExW(directoryName.c_str(), (PULARGE_INTEGER)&freeClient, (PULARGE_INTEGER)&totalBytes, (PULARGE_INTEGER)&totalFreeBytes);

        return success ? (sint64)freeClient : -1;
    } else {
        DWORD sectorsPerCluster, bytesPerSector, freeClusters, totalClusters;
        BOOL success;

        VDStringW rootPath(VDFileGetRootPath(path));

        if ((LONG)GetVersion() < 0)
            success = GetDiskFreeSpaceA(rootPath.empty() ? NULL : VDTextWToA(rootPath).c_str(), &sectorsPerCluster, &bytesPerSector, &freeClusters, &totalClusters);
        else
            success = GetDiskFreeSpaceW(rootPath.empty() ? NULL : rootPath.c_str(), &sectorsPerCluster, &bytesPerSector, &freeClusters, &totalClusters);

        return success ? (sint64)((uint64)sectorsPerCluster * bytesPerSector * freeClusters) : -1;
    }
}