startup_labkit.m

function startup_labkit(printBanner)
%STARTUP_LABKIT Configure MATLAB path for LabKit workbench apps.

    if nargin < 1 || isempty(printBanner)
        printBanner = true;
    end
    printBanner = logical(printBanner);

    root = fileparts(mfilename('fullpath'));

    addPathIfMissing(root);
    addPathIfMissing(fullfile(root, 'apps'), '-end');
    appDirs = appPathDirs(fullfile(root, 'apps'));
    for k = 1:numel(appDirs)
        addPathIfMissing(appDirs{k}, '-end');
    end

    if printBanner
        fprintf('LabKit workbench loaded from:\n  %s\n', root);
    end
end

function dirs = appPathDirs(appRoot)
    dirs = {};
    if exist(appRoot, 'dir') ~= 7
        return;
    end

    entries = dir(appRoot);
    dirsByEntry = cell(numel(entries), 1);
    for k = 1:numel(entries)
        entry = entries(k);
        if ~entry.isdir || ismember(entry.name, {'.', '..'})
            continue;
        end
        if shouldSkipAppDir(entry.name)
            continue;
        end

        fullpath = fullfile(appRoot, entry.name);
        childDirs = appPathDirs(fullpath);
        dirsByEntry{k} = [{fullpath}, childDirs];
    end
    dirs = [dirsByEntry{:}];
end

function tf = shouldSkipAppDir(name)
    tf = startsWith(name, '.') || startsWith(name, '+') ...
        || startsWith(name, '@') || any(strcmp(name, {'private', 'scaffold'}));
end

function addPathIfMissing(folder, varargin)
    if exist(folder, 'dir') ~= 7 || pathContains(folder)
        return;
    end
    addpath(folder, varargin{:});
end

function tf = pathContains(folder)
    paths = strsplit(path, pathsep);
    tf = any(strcmp(paths, folder));
end