DIRWALK - Walk the directory tree

Generate the file names and dir names in a directory tree by walking the tree.

Description

Function generate the file names and directory names in a directory tree by walking the tree top-down. For each directory in the tree rooted at directory topPath. For each directory of tree you can call "Visitor Function" for files processing.

Using:
    [pathNames, dirNames, fileNames] = dirwalk(topPath)
    dirwalk(topPath, visitor)
    [visitorOutput1, visitorOutput2, ..., visitorOutputN] = dirwalk(topPath, visitor)
    [...] = dirwalk(topPath, visitor, visitorInput1, visitorInput2, ..., visitorInputN)

Example:
    topPath = fullfile(matlabroot, 'toolbox', 'matlab', 'demos');

    % Get files and dirs listing (default visitor)
    [pathNames, dirNames, fileNames] = dirwalk(topPath);
    
    % Call visitor function in each dir
    dirwalk(topPath, @(y,x) disp(strcat(y, filesep, {x.name}')))

See help DIRWALK and TEST_DIRWALK for detailes examples.

• MATLAB release: MATLAB 7.9 (2009b)

[Josiah McClurg]

Functional, but I think it could be more concise and generic. Consider the following 12 lines:

function recurseDirectory(name, callback)
directory = dir(name);
for i = 1:length(directory)
   if(~strcmp(directory(i).name,'.') && ~strcmp(directory(i).name,'..'))
       if(directory(i).isdir)
           recurseDirectory([name '/' directory(i).name], callback);
       else
           callback([name '/' directory(i).name]);
       end
   end
end
end

You can test the above code out with

recurseDirectory('.',@display)

if you like