By Brandon W. Yuille

I want to share a function that is very useful when dealing with file operations and management. The following function (void EnumDirFiles(...)), can be used as is to simply list all the files within a directory and all the files within the subdirectories of the directory. The usages for such a function are vast, as this is a basis for all file enumeration operations.

I hope you will find this as useful as I do!

Implementation

int main()
{
	EnumDirFiles("C:\\Program Files"); // List all files within the Program Files directory.

	return 0;

}

Recursive Function Definition

void EnumDirFiles(char *lpszDir)
{
	HANDLE hDir;
	BOOL bDone = FALSE;
	WIN32_FIND_DATA FileData;
	char szFind[512];

	strcpy(szFind, lpszDir);

	strcat(szFind, "\\*");

	hDir = FindFirstFile(szFind, &FileData); 

	if(hDir == INVALID_HANDLE_VALUE) 

	{ 

		printf("Invalid Directory: \"%s\"\n", lpszDir); 

		return;

	}

	while(!bDone) 

	{

		if(FileData.cFileName[0] != '.') // Exclude "." and ".."

		{

			char szFullFile[512];

			strcpy(szFullFile, lpszDir);

			strcat(szFullFile, "\\");

			strcat(szFullFile, FileData.cFileName);

			if(FileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)

			{

				printf("- Listing Directory: %s\n", szFullFile);

				EnumDirFiles(szFullFile);

			}

			else

				printf("%s\n", szFullFile);

		}

		if(!FindNextFile(hDir, &FileData)) 

		{

			if(GetLastError() == ERROR_NO_MORE_FILES) 

			{

				bDone = TRUE; 

			} 

			else 

			{

				printf("Unable to enumerate the next file.\n"); 

				bDone = TRUE;

			} 

		}

	} 

	// Close the search handle. 

	FindClose(hDir);

}