Keskustelu: Ohjelmointikysymykset: C++: Oma funktio

char poistetut_tiedostot[256];
char polku_[256];
WIN32_FIND_DATA w32FindData;
HANDLE hTiedosto;
char polku[256]="C:\\omat\\";
char c[256];


BOOL CleanDir(char c[256])
 {

    char tiedostonimi[256];
    char tiedosto_haku[256];
    char poistetut[256];
    strcpy(tiedostonimi, c);
    strcpy(tiedosto_haku, c);
    strcat(tiedosto_haku, "*");
    hTiedosto = FindFirstFile(tiedosto_haku, &w32FindData);
    if(hTiedosto != INVALID_HANDLE_VALUE)
     {
     do{
      if(w32FindData.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
       { strcat(tiedostonimi, w32FindData.cFileName);
         CleanDir(tiedostonimi);
         RemoveDirectory(tiedostonimi);
         strcpy(tiedostonimi, c); }
      else
          { strcat( tiedostonimi, w32FindData.cFileName);
             DeleteFile(tiedostonimi);
             strcpy(tiedostonimi, c);
             strcpy(poistetut, w32FindData.cFileName);
             strcpy(poistetut, "  "); }}
     while(FindNextFile(hTiedosto, &w32FindData));
     }

  strcpy(poistetut_tiedostot, poistetut);
  strcpy(polku_, c);
  if(!hTiedosto){return FALSE;}
  else {return TRUE;}
 }

/*
 *  recursive directory cleaner, thefox 2004
 *
 *  note: just an example, and thus doesnt really remove anything
 *
 *  note: apparently doesnt handle directories containing system directories,
 *        for example temporary internet files
 */

#include <stdio.h>
#include <stdlib.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>

BOOL clean_directory(char *dir, int rec);

int main(void)
{
	clean_directory("C:\\tmp", 0);
}

/* note: the 'dir' shouldnt contain the trailing backslash ('\') and it
	 shouldnt exceed MAX_PATH - 2 characters */
BOOL clean_directory(char *dir, int rec)
{
	char fname[1024];
	WIN32_FIND_DATA w32fd;
	HANDLE hf;
	int files = 0;

	printf("cleaning dir: %s\nlevel of recursion: %d\n", dir, rec);

	/* note: this code is not safe (buffer overflow may occur) */
	strcpy(fname, dir);
	strcat(fname, "\\*");

	hf = FindFirstFile(fname, &w32fd);
	if(hf == INVALID_HANDLE_VALUE) return FALSE;

	/* go thru all the files (and directories) in the current directory */
	do
	{
		char tmp[1024];

		if(w32fd.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY)
		{
			/* it's a directory, clean if not a special directory */
			strcpy(tmp, dir);
			strcat(tmp, "\\");
			strcat(tmp, w32fd.cFileName);

			if(strcmp(w32fd.cFileName, ".") != 0 &&
				 strcmp(w32fd.cFileName, "..") != 0)
			{
				if(clean_directory(tmp, rec + 1) == TRUE)
				{
					printf("directory cleaned\nlevel of recursion: %d\n", rec);
				}
				else
				{
					printf("no files were deleted\n");
				};
			}
		}
		else
		{
			/* it's a file */
			strcpy(tmp, dir);
			strcat(tmp, "\\");
			strcat(tmp, w32fd.cFileName);
			printf("delete file: %s\n", w32fd.cFileName);
			files++;
		}

	} while(FindNextFile(hf, &w32fd));

	return (files > 0) ? TRUE : FALSE;
}