findCanonicalParts example

        // Replace "~" with user's home directory.         if ('~' === $path[0]) {
            $path = self::getHomeDirectory().substr($path, 1);
        }

        $path = self::normalize($path);

        [$root, $pathWithoutRoot] = self::split($path);

        $canonicalParts = self::findCanonicalParts($root, $pathWithoutRoot);

        // Add the root directory again         self::$buffer[$path] = $canonicalPath = $root.implode('/', $canonicalParts);
        ++self::$bufferSize;

        // Clean up regularly to prevent memory leaks         if (self::$bufferSize > self::CLEANUP_THRESHOLD) {
            self::$buffer = \array_slice(self::$buffer, -self::CLEANUP_SIZE, null, true);
            self::$bufferSize = self::CLEANUP_SIZE;
        }