LabWindows/CVI 2013 - Windows This ANSI C code shows how to walk directories using Win SDK (recursively) as well as CVI function calls (not recursively) See http://www.40tude.fr/blog/parcours-de-repertoires-de-maniere-recursive/ for more details (french)

WalkDirectoryTree

#include <windows.h>   
#include <utility.h>
#include "toolbox.h"         
#include <stdio.h>
#include <string.h>

// ----------------------------------------------------------------------------
static void WalkDirectoryTree1(const char dir[]);        
static void WalkDirectoryTree2(const char dir[]);        

// ----------------------------------------------------------------------------
static int gFound=0;         

// ----------------------------------------------------------------------------
int main (int argc, char *argv[]) {
  
  const char RootDir[MAX_PATHNAME_LEN]= "C:\\Users\\Public\\Documents\\National Instruments\\CVI2013\\samples";
  
  double t1 = Timer ();
    WalkDirectoryTree1(RootDir);
  double t2 = Timer ();
  printf("%f\n", t2-t1);
  printf("Found %d .c files\n", gFound); 

  gFound=0;      
  double t3 = Timer ();
    WalkDirectoryTree2(RootDir);
  double t4 = Timer ();
  printf("%f\n", t4-t3);
  printf("Found %d .c files\n", gFound);

  getchar();
  return 0;
}

// ----------------------------------------------------------------------------
static void WalkDirectoryTree1(const char RootDir[]) {
  
  typedef char t_Dir[MAX_PATHNAME_LEN] ;
  
  char PathAndFilePattern[MAX_PATHNAME_LEN];
  sprintf(PathAndFilePattern,"%s\\*.c", RootDir); 

  char FileName[MAX_FILENAME_LEN];      
  if (!GetFirstFile (PathAndFilePattern, 1, 0, 0, 0, 0, 0, FileName)) {
    do{
      // Process the file here 
      gFound++;  
    } while (!GetNextFile (FileName));
  }

  char DirPattern[MAX_PATHNAME_LEN];  
  sprintf(DirPattern,"%s\\*", RootDir); 
  
  char DirName[MAX_FILENAME_LEN];  
  if (!GetFirstFile (DirPattern, 0, 0, 0, 0, 0, 1, DirName)) { 
    ListType hList = ListCreate (MAX_PATHNAME_LEN);
    do{
      ListInsertItem (hList, DirName, END_OF_LIST);     
    }while (!GetNextFile (DirName));

    int   numDir      = ListNumItems (hList);
    t_Dir *pListData  = (t_Dir*)ListGetDataPtr (hList);
    
    for (int i=0; i!=numDir; ++i) {
      sprintf(DirPattern,"%s\\%s", RootDir, *pListData);
      WalkDirectoryTree1(DirPattern);
      pListData++;              
    }
    ListDispose (hList);
  }
}


// ----------------------------------------------------------------------------
static void WalkDirectoryTree2(const char RootDir[]) {
  
  char DirPattern[MAX_PATHNAME_LEN];           
  sprintf(DirPattern,"%s\\*", RootDir);

  WIN32_FIND_DATA ffd;
  HANDLE hFind = FindFirstFile(DirPattern, &ffd);   
  if (hFind!=INVALID_HANDLE_VALUE) { 
    do{
      if(ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY){
        if (ffd.cFileName[0] == '.') continue;
        char NewRootDir[MAX_PATHNAME_LEN];             
        sprintf(NewRootDir,"%s\\%s", RootDir, ffd.cFileName);   
        WalkDirectoryTree2(NewRootDir);
      }
    }while(FindNextFile(hFind, &ffd));
    FindClose(hFind); 
  }
  
  char PathAndFilePattern[MAX_PATHNAME_LEN];      
  sprintf(PathAndFilePattern,"%s\\*.c", RootDir);
  
  hFind = FindFirstFile(PathAndFilePattern, &ffd);
  if (hFind!=INVALID_HANDLE_VALUE) {
    do{
      // Process the file here       
      gFound++;  
    } while (FindNextFile(hFind, &ffd));
  }
  FindClose(hFind);
}