Solved

create directory

Posted on 2006-11-07
9
202 Views
Last Modified: 2010-04-01
if we want to create directory
we write:

BOOL create= CreateDirectory(m_pcFolderName,NULL);

But if directory already exist at destination
how can we check this.
0
Comment
Question by:tariq6000
9 Comments
 
LVL 45

Accepted Solution

by:
sunnycoder earned 168 total points
ID: 17888502
Hi tariq6000,

If directory already exists, CreateDirectory will return 0 and GetLastError would get you ERROR_ALREADY_EXISTS error

Cheers!
sunnycoder
0
 
LVL 39

Assisted Solution

by:itsmeandnobodyelse
itsmeandnobodyelse earned 166 total points
ID: 17888605
>>>> how can we check this.

#include <sys/stat.h>


    struct stat status;
    if (stat(m_pcFolderName, &status) == 0)  // directory exists


Regards, Alex
0
 
LVL 86

Assisted Solution

by:jkr
jkr earned 166 total points
ID: 17892208
The Windows way:

if ( -1 == GetFileAttributres(m_pcFolderName)) {

  // does not exist
}

f ( -1 != GetFileAttributres(m_pcFolderName)) {

  // does exist, could also be a file
}
0
Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

 
LVL 19

Expert Comment

by:BrianGEFF719
ID: 17895793
To expand on what JKR has said you can do:



#define FILE_DIRECTORY 0x10
#define NO_EXIST 0xFFFFFFFF

int folderExist( char *folder)
{
      DWORD fAttr = GetFileAttributes(folder);
      if (fAttr == NO_EXIST)
            return 0; /* return 0 if nothing exists */
      else if ( fAttr & FILE_DIRECTORY )
            return 1; /* return 1 for directory that exists */
      else
            return 2; /* return 2 for file */

}
0
 
LVL 86

Expert Comment

by:jkr
ID: 17895806
That does not mak any difference - if either a directory or file with the same name is already there, the creation will fail, that's why I omitted that.
0
 
LVL 19

Expert Comment

by:BrianGEFF719
ID: 17895834
>>That does not mak any difference

I know,I didnt consider my post 'for points' anyway, I was just point out that you can explicitly check for a folder.
0
 
LVL 86

Expert Comment

by:jkr
ID: 17895843
... and regarding that, you are absolutely right ;o)
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
C language IDE – Compilers installation 14 75
Best book to learn C++ 4 84
Add values of each row in an array 3 64
Error C2678: binary '!=': no operator found... 4 58
Unlike C#, C++ doesn't have native support for sealing classes (so they cannot be sub-classed). At the cost of a virtual base class pointer it is possible to implement a pseudo sealing mechanism The trick is to virtually inherit from a base class…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

856 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question