private function parseTextFile()
    {
        $data = file($this->inputTextFile);

        $timeZoneMap = array();

        foreach ($data as $line) {
            // Remove \n
            $line = str_replace(array("\n", "\r"), '', $line);
            $line = trim($line);

            if (strlen($line) == 0 || substr($line, 0, 1) == '#') {
                continue;
            }
            if (strpos($line, '|')) {
                // Valid line
                $parts = explode('|', $line);


                $prefix = $parts[0];
                $timezone = $parts[1];

                $timeZoneMap[$prefix] = $timezone;
            }
        }

        return $timeZoneMap;
    }