Function getAllPathsAndStats

comparison/largest/largest-callbacks.js:22–50

(callback)

    // Enumerate all files and subfolders in 'dir' to get their stats.
    function getAllPathsAndStats(callback) {
        fs.readdir(dir, function (err, files) {
            if (err) { callback(err); return; }
            var paths = _.map(files, function (file) { return path.join(dir, file); });
            var stats = [];
            var remaining = paths.length;
            if (remaining === 0) {

                // Directory is empty.
                callback(null, { paths: paths, stats: stats });
            } else {

                // Get all file stats in parallel.
                paths.forEach(function (path, i) {
                    fs.stat(path, function (err, stat) {
                        if (remaining === 0) return;
                        if (err) {
                            remaining = 0;
                            callback(err);
                        } else {
                            stats[i] = stat;
                            --remaining;
                            if (remaining === 0) callback(null, { paths: paths, stats: stats });
                        }
                    });
                });
            }
        });
    }

    // Build up a list of possible candidates, recursing into subfolders if requested.
    function listCandidates(paths, stats, callback) {