Hello,

I was wondering if anyone could tell me how I would go about doing this. I need a function that can list all the files and directories in a given directory, and return an array that I can use that can reference each file, each folder, and each file within each subfolder. Is this possible?

Thanks!

okibi wrote:
> Hello,
> 
> I was wondering if anyone could tell me how I would go about doing this. I need a function that can list all the files and directories in a given directory, and return an array that I can use that can reference each file, each folder, and each file within each subfolder. Is this possible?
> 
> Thanks!

tango.io.FileScan :).

If you're using Phobos, a recursive file scanner is pretty much the easiest thing you can write!

Pseudo code:

scan(char [] Path, ref char [][] Paths) {
	Paths ~= Path

	if (!Path.isDirectory)
		return

	ListOfPaths = getContentsOfDir(Path)
	foreach (Item; ListOfPaths)
		scan(Path)
}

Obviously you can get more creative and store an array of structures which contain file system information such as whether or not the path is a file or a directory, etc, but that's the basic idea.

Even if you're not using Tango, you can always look at the source code
to see how they are doing it:
http://dsource.org/projects/tango/docs/current/source/tango.io.FileScan.html

Hope this helps!

okibi wrote:
> Hello,
> 
> I was wondering if anyone could tell me how I would go about doing this. I need a function that can list all the files and directories in a given directory, and return an array that I can use that can reference each file, each folder, and each file within each subfolder. Is this possible?
> 
> Thanks!

Does std.file.listdir help?

http://www.digitalmars.com/d/1.0/phobos/std_file.html

--bb

Tim Burrell Wrote:

> okibi wrote:
> > Hello,
> > 
> > I was wondering if anyone could tell me how I would go about doing this. I need a function that can list all the files and directories in a given directory, and return an array that I can use that can reference each file, each folder, and each file within each subfolder. Is this possible?
> > 
> > Thanks!
> 
> tango.io.FileScan :).
> 
> If you're using Phobos, a recursive file scanner is pretty much the easiest thing you can write!
> 
> Pseudo code:
> 
> scan(char [] Path, ref char [][] Paths) {
> 	Paths ~= Path
> 
> 	if (!Path.isDirectory)
> 		return
> 
> 	ListOfPaths = getContentsOfDir(Path)
> 	foreach (Item; ListOfPaths)
> 		scan(Path)
> }
> 
> Obviously you can get more creative and store an array of structures which contain file system information such as whether or not the path is a file or a directory, etc, but that's the basic idea.
> 
> Even if you're not using Tango, you can always look at the source code
> to see how they are doing it:
> http://dsource.org/projects/tango/docs/current/source/tango.io.FileScan.html
> 
> Hope this helps!

Actually, I was wondering if D had a function (or function within Phobos) that allowed recursive directory scanning. Anyways, here's what I wrote:

void dirList(char[] path)
{
	if (!isdir(path))
		writefln("File: ", path);
	else
	{
		writefln("Directory: ", path);
		char[][] pathsList = listdir(path);
		char[][] dirs;
		char[][] files;
		foreach (item; pathsList)
		{
			if (isdir(path~"/"~item))
				dirs ~= path~"/"~item;
			else
				files ~= path~"/"~item;
		}
		foreach (file; files)
			writefln("File: ", file);
		foreach (dir; dirs)
			dirList(dir);
	}
}

Can this be optimized at all?

Thanks!

okibi Wrote:

> Tim Burrell Wrote:
> 
> > okibi wrote:
> > > Hello,
> > > 
> > > I was wondering if anyone could tell me how I would go about doing this. I need a function that can list all the files and directories in a given directory, and return an array that I can use that can reference each file, each folder, and each file within each subfolder. Is this possible?
> > > 
> > > Thanks!
> > 
> > tango.io.FileScan :).
> > 
> > If you're using Phobos, a recursive file scanner is pretty much the easiest thing you can write!
> > 
> > Pseudo code:
> > 
> > scan(char [] Path, ref char [][] Paths) {
> > 	Paths ~= Path
> > 
> > 	if (!Path.isDirectory)
> > 		return
> > 
> > 	ListOfPaths = getContentsOfDir(Path)
> > 	foreach (Item; ListOfPaths)
> > 		scan(Path)
> > }
> > 
> > Obviously you can get more creative and store an array of structures which contain file system information such as whether or not the path is a file or a directory, etc, but that's the basic idea.
> > 
> > Even if you're not using Tango, you can always look at the source code
> > to see how they are doing it:
> > http://dsource.org/projects/tango/docs/current/source/tango.io.FileScan.html
> > 
> > Hope this helps!
> 
> Actually, I was wondering if D had a function (or function within Phobos) that allowed recursive directory scanning. Anyways, here's what I wrote:
> 
> void dirList(char[] path)
> {
> 	if (!isdir(path))
> 		writefln("File: ", path);
> 	else
> 	{
> 		writefln("Directory: ", path);
> 		char[][] pathsList = listdir(path);
> 		char[][] dirs;
> 		char[][] files;
> 		foreach (item; pathsList)
> 		{
> 			if (isdir(path~"/"~item))
> 				dirs ~= path~"/"~item;
> 			else
> 				files ~= path~"/"~item;
> 		}
> 		foreach (file; files)
> 			writefln("File: ", file);
> 		foreach (dir; dirs)
> 			dirList(dir);
> 	}
> }
> 
> Can this be optimized at all?
> 
> Thanks!

In reply to myself, that code will only pick up the first directory in each subdirectory.

okibi Wrote:

> okibi Wrote:
> 
> > Tim Burrell Wrote:
> > 
> > > okibi wrote:
> > > > Hello,
> > > > 
> > > > I was wondering if anyone could tell me how I would go about doing this. I need a function that can list all the files and directories in a given directory, and return an array that I can use that can reference each file, each folder, and each file within each subfolder. Is this possible?
> > > > 
> > > > Thanks!
> > > 
> > > tango.io.FileScan :).
> > > 
> > > If you're using Phobos, a recursive file scanner is pretty much the easiest thing you can write!
> > > 
> > > Pseudo code:
> > > 
> > > scan(char [] Path, ref char [][] Paths) {
> > > 	Paths ~= Path
> > > 
> > > 	if (!Path.isDirectory)
> > > 		return
> > > 
> > > 	ListOfPaths = getContentsOfDir(Path)
> > > 	foreach (Item; ListOfPaths)
> > > 		scan(Path)
> > > }
> > > 
> > > Obviously you can get more creative and store an array of structures which contain file system information such as whether or not the path is a file or a directory, etc, but that's the basic idea.
> > > 
> > > Even if you're not using Tango, you can always look at the source code
> > > to see how they are doing it:
> > > http://dsource.org/projects/tango/docs/current/source/tango.io.FileScan.html
> > > 
> > > Hope this helps!
> > 
> > Actually, I was wondering if D had a function (or function within Phobos) that allowed recursive directory scanning. Anyways, here's what I wrote:
> > 
> > void dirList(char[] path)
> > {
> > 	if (!isdir(path))
> > 		writefln("File: ", path);
> > 	else
> > 	{
> > 		writefln("Directory: ", path);
> > 		char[][] pathsList = listdir(path);
> > 		char[][] dirs;
> > 		char[][] files;
> > 		foreach (item; pathsList)
> > 		{
> > 			if (isdir(path~"/"~item))
> > 				dirs ~= path~"/"~item;
> > 			else
> > 				files ~= path~"/"~item;
> > 		}
> > 		foreach (file; files)
> > 			writefln("File: ", file);
> > 		foreach (dir; dirs)
> > 			dirList(dir);
> > 	}
> > }
> > 
> > Can this be optimized at all?
> > 
> > Thanks!
> 
> In reply to myself, that code will only pick up the first directory in each subdirectory.

I take that back. Just outputting what it finds to the command line works as expected. However, if used within GtkD to add selections to a TreeView, it does not.