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Problem with DirectoryExists() in windows [message #21852]

Mon, 08 June 2009 13:19

koldo
Messages: 3358
Registered: August 2008

Senior Veteran

Hello all

When using DirectoryExists() with a drive name like

DirectoryExists("c:\\")

it returns false.

Revising the code I have seen that FindFirstFileW("C:\\") return INVALID_HANDLE_VALUE.

Perhaps a way to solve this would be check if directory name is a drive, so the changed DirectoryExists() could be:

bool DirectoryExists(const char *name) {
#if defined(PLATFORM_WIN32)
	if (GetDriveType(name) != DRIVE_NO_ROOT_DIR) 
	    return true;
#endif
	FindFile ff(name);
	return ff && ff.IsDirectory();
}

Best regards
Koldo

Best regards
Iñaki

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Re: Problem with DirectoryExists() in windows [message #21859 is a reply to message #21852]

Mon, 08 June 2009 14:35

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Good idea. I have only added check to be sure

bool DirectoryExists(const char *name) {
#if defined(PLATFORM_WIN32)
	if(name[0] && name[1] == ':' && name[2] == '\\' && name[3] == 0 &&
	   GetDriveType(name) != DRIVE_NO_ROOT_DIR) 
	    return true;
#endif
	FindFile ff(name);
	return ff && ff.IsDirectory();
}

Mirek

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