asked on

Create Directory

Hello,

I'm given a string like "C:\SomeFolder\SomeFile.SomeExtension";

I want to create SomeFile.SomeExtension under SomeFolder but SomeFolder may not exist, so SomeFolder may need to be created as well. What's the simplest way to do this?

dkloeck

You can use mkdir C/C++ function.

#include <direct.h>

mkdir("c:\\SomeFolder");

For Windows platform, you can use CreateDirectory API function.

CreateDirectory("c:\\temp", NULL);

ASKER CERTIFIED SOLUTION

jkr

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AdrianSRU

If you are using Windows, the CreateDirectory function will work:

CreateDirectory( "C:\SomeFolder", NULL );

The limitation of this function is that if you are trying to create several levels of directories you must create them one at a time.

If SomeFolder1 does not already exist this will fail:
CreateDirectory( "C:\SomeFolder1\SomeFolder2", NULL );

You must make two calls:
CreateDirectory( "C:\SomeFolder1", NULL );
CreateDirectory( "C:\SomeFolder1\SomeFolder2", NULL );

--Adrian

jkr

>>If SomeFolder1 does not already exist this will fail

That's why you can either use 'ShCreateDirectory()' or the above code to do that in one single call.

Raymun

ASKER

Thanks dkloeck and Adrian but CreateDirectory's limitation of parent directory existence is not what I'm looking for.

jkr:
You code is almost exactly what I'm looking for. The only problem is it creates SomeFile.SomeExtension as a folder and not as a file. I modified a bit and it works perfectly now:

#using <mscorlib.dll>
#include <windows.h>

using namespace System::IO;

DWORD ChkCreateDir( char* pszDir )
{
DWORD dwAtt = 0;
dwAtt = GetFileAttributes( pszDir );

if( FILE_ATTRIBUTE_DIRECTORY == dwAtt ) return( dwAtt );

char acDir [MAX_PATH];
strcpy( acDir, pszDir );

bool bCreateFolder = true;

char* pc = NULL;
pc = strrchr( acDir, '\\' );

if( pc ) {
if( bCreateFolder ) bCreateFolder = false;

*pc = (char) 0;

}
else
return( 0xffffffff );

dwAtt = ChkCreateDir( acDir );

if( FILE_ATTRIBUTE_DIRECTORY == dwAtt && bCreateFolder ) {
if( !CreateDirectory( pszDir, NULL ))
return GetLastError();

return( dwAtt );
}

return( 0 );
}

int main()
{
char* dir = "C:\\SomeFolder\\SomeFile.SomeExtension";
ChkCreateDir( dir );
File::Create( dir, 1024 );
}

Thanks!

Raymun

ASKER

Sorry this is the working code:

#using <mscorlib.dll>
#include <windows.h>

using namespace System::IO;

DWORD ChkCreateDir( char* pszDir )
{
DWORD dwAtt = 0;
dwAtt = GetFileAttributes( pszDir );

if( FILE_ATTRIBUTE_DIRECTORY == dwAtt ) return( dwAtt );

char acDir [MAX_PATH];
strcpy( acDir, pszDir );

bool bCreateFolder = true;
static bool bIsFile = false;

char* pc = NULL;
pc = strrchr( acDir, '\\' );

if( pc ) {
if( !bIsFile ) {
bIsFile = true;
bCreateFolder = false;
}

*pc = (char) 0;

}
else
return( 0xffffffff );

dwAtt = ChkCreateDir( acDir );

if( FILE_ATTRIBUTE_DIRECTORY == dwAtt && bCreateFolder ) {
if( !CreateDirectory( pszDir, NULL ))
return GetLastError();

return( dwAtt );
}

return( 0 );
}

int main()
{
char* dir = "D:\\Test\\Data\\Data2\\file.txt";
ChkCreateDir( dir );
File::Create( dir, 1024 );
}