Sorry for the trouble, but could someone demonstrate of how to accomplish the following tasks in D?

Read a file
Write a file
Append to a file
Rename a file
Delete a file
Get file size
Get file attributes

Thanks in advance...
Andrew

On Mon, 26 Aug 2002 02:49:51 -0400 "Andrew Edwards" <crxace13@comcast.net> wrote:

> Sorry for the trouble, but could someone demonstrate of how to accomplish the following tasks in D?
> 
> Read a file

	File file = new File('c:\autoexec.bat');
	while (!file.eof())
	{
		char[] s = file.readLine();
		printf("%.*s\n", s);
	}

> Write a file

	File file = new File;
	file.create('fib.dat');
	int a = 0, b = 1;
	for (int i = 0; i < 1000; i++)
	{
		int c = a + b;
		file.write(c);
		a = b; b = c;
	}

> Append to a file

	File file = new File('fib.dat', FileMode.In | FileMode.Out);
	file.seek(0, SeekPos.End);
	file.writeString("END OF FILE");

> Rename a file

	rename("old", "new");

> Delete a file

	remove("kernel32.dll");

> Get file size

	printf("Size of autoexec.bat is %d bytes\n", (new
File("c:\autoexec.bat")).size());

> Get file attributes

Not sure how this could be done - it's not multiplatform.

If you must get the file attributes, you could use the winapi (for Windows only
of course):
DWORD GetFileAttributes( LPCTSTR lpFileName );

Detailed here: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/getfileattributes.asp

You also need to do this:
import windows;
And remember that D's strings don't end with the NULL character (I think?); you
have to append it yourself before you send it off. Anyway, I'm fairly new at D,
so if anyone can clarify I'd be grateful.

Pavel Minayev wrote:

> On Mon, 26 Aug 2002 02:49:51 -0400 "Andrew Edwards" <crxace13@comcast.net> wrote:
>
> > Sorry for the trouble, but could someone demonstrate of how to accomplish the following tasks in D?
> >
> > Read a file
>
>         File file = new File('c:\autoexec.bat');
>         while (!file.eof())
>         {
>                 char[] s = file.readLine();
>                 printf("%.*s\n", s);
>         }
>
> > Write a file
>
>         File file = new File;
>         file.create('fib.dat');
>         int a = 0, b = 1;
>         for (int i = 0; i < 1000; i++)
>         {
>                 int c = a + b;
>                 file.write(c);
>                 a = b; b = c;
>         }
>
> > Append to a file
>
>         File file = new File('fib.dat', FileMode.In | FileMode.Out);
>         file.seek(0, SeekPos.End);
>         file.writeString("END OF FILE");
>
> > Rename a file
>
>         rename("old", "new");
>
> > Delete a file
>
>         remove("kernel32.dll");
>
> > Get file size
>
>         printf("Size of autoexec.bat is %d bytes\n", (new
> File("c:\autoexec.bat")).size());
>
> > Get file attributes
>
> Not sure how this could be done - it's not multiplatform.

On Tue, 27 Aug 2002 19:33:54 -0400 Edmund Huber <weql@hotmail.com> wrote:

> And remember that D's strings don't end with the NULL character (I think?);
you
> have to append it yourself before you send it off. Anyway, I'm fairly new at
D,
> so if anyone can clarify I'd be grateful.

There is a toStringz() function in string module which can be used to convert
D strings
to C ones. It performes some checks before converting, and in some cases it can
be a lot faster than just appending null to the end.

On Tuesday, 27 August 2002 at 23:31:35 UTC, Edmund Huber wrote:
> If you must get the file attributes, you could use the winapi (for Windows only
> of course):
> DWORD GetFileAttributes( LPCTSTR lpFileName );
>
> Detailed here:
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/getfileattributes.asp
>
> You also need to do this:
> import windows;

What's the best way to do this today?  (Replying to a message from 13 years ago!)

I am writing an installer for mini windows client and want to know where I have permission to save the executable files.  (Administered machine, so user won't have full rights).

The msdn link above is dead by now.