ofstream and the default path

Hi there I am using an ofstream object to write to files and I want to know if there is a method in which I can change the default path from the app location.

i.e.

My app is at C:\app\app.exe and I want to open the file C:\folder\file.txt by using:

Code:

---

ofstream file("file.txt");

---

Any help would be much appreciated

dt

What's wrong with building the path from a default directory and a filename?

Code:

---

string default_path("C:\folder\");
string default_file("file.txt");

...

string filename(default_path + default_file);
ofstream file(filename.c_str());

---

Then you can have whatever defaults you want and still allow users to change their preference.

Well indeed nothing. But I had problems using my CString object that contained the path string. I've just this minute discovered I needed to use ReleaseBuffer() on it. Doh

tx for you help tho

dt

>Doh
That'll teach you to not use MFC objects in the first place. ;)

lol, needed a "quick and easy" solution for a tiny program :p

While your here, I've already spent long enuff finding the answer to this one;

How can I check to see whether a directory exists or not?

thnx in advance (this will be the final question to see the completion of this "quick n easy" program)

dt

Try to stat() it, or any other file information function. If the call fails, the directory probably doesn't exist; check the error value to be sure.

>How can I check to see whether a directory exists or not?
Quick and dirty solution:

Code:

---

#include <windows.h>

bool exists(const char *path)
{ 
  return GetFileAttributes(path) == FILE_ATTRIBUTE_DIRECTORY; 
}

---

many thanks again, after not being able to find f' all on stat() I eventually stumbled on _access(), which you can use on a file or directory. It's in io.h and works v nicely indeed.


dt

Quote:

---

Originally Posted by Prelude

>How can I check to see whether a directory exists or not?
Quick and dirty solution:

Code:

---

#include <windows.h>

bool exists(const char *path)
{ 
  return GetFileAttributes(path) == FILE_ATTRIBUTE_DIRECTORY; 
}

---

---

Code:

---

#include <windows.h>

bool is_folder(const char *path)
{ 
  DWORD dwAttrs = GetFileAttributes(path);

  return (dwAttrs != INVALID_FILE_ATTRIBUTES && (dwAttrs & FILE_ATTRIBUTE_DIRECTORY));
}

---

Or you can use Boost.Path. It provides all the functionality you need and more.
http://www.boost.org/