Hacking JMSI18nRoutingBundle, allow localization in path.

RoutePatternGenerationStrategy.php

<?php

namespace Hypebeast\DesktopBundle\Router;

use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Translation\TranslatorInterface;
use Symfony\Component\Routing\Route;
use JMS\I18nRoutingBundle\Router\PatternGenerationStrategyInterface;
use JMS\I18nRoutingBundle\Router\DefaultPatternGenerationStrategy;

class RoutePatternGenerationStrategy extends DefaultPatternGenerationStrategy implements PatternGenerationStrategyInterface
{
    private $locales;

    public function __construct($strategy, TranslatorInterface $translator, array $locales, $cacheDir, $translationDomain = 'routes', $defaultLocale = 'en')
    {
        parent::__construct($strategy, $translator, $locales, $cacheDir, $translationDomain, $defaultLocale);
        $this->locales = $locales;
    }

    /**
     * {@inheritDoc}
     */
    public function generateI18nPatterns($routeName, Route $route)
    {
        $patterns = array();
        foreach ($route->getOption('i18n_locales') ?: $this->locales as $locale) {
            if ($locale == 'zh_TW'){
                $i18nPattern = '/t' . $route->getPattern();
            } else {
                $i18nPattern = $route->getPattern();
            }

            $patterns[$i18nPattern][] = $locale;
        }

        return $patterns;
    }

}

Router.php

<?php

namespace Hypebeast\DesktopBundle\Router;

use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Translation\TranslatorInterface;
use Symfony\Component\Routing\Route;
use JMS\I18nRoutingBundle\Exception\NotAcceptableLanguageException;
use JMS\I18nRoutingBundle\Router\I18nRouter;

class Router extends I18nRouter
{
    public function setHostMap(array $hostMap)
    {
        $hostMap['zh_TW'] = $hostMap['zh_CN'];
        parent::setHostMap($hostMap);
    }

    public function match($url)
    {
        try {
            $result = parent::match($url);
        } catch (NotAcceptableLanguageException $ex) {
            if (substr($url, 0, 2) == '/t') {
                $url = substr($url, 2);
                $url = $url ? $url : '/';
                $result = parent::match($url);
                $result['_locale'] = 'zh_TW';
            } else {
                throw $ex;
            }
        }

        return $result;
    }

}