/joomlapp.com/components/com_content/helpers/legacyrouter.php

<?php
/**
 * @package     Joomla.Site
 * @subpackage  com_content
 *
 * @copyright   Copyright (C) 2005 - 2018 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

/**
 * Legacy routing rules class from com_content
 *
 * @since       3.6
 * @deprecated  4.0
 */
class ContentRouterRulesLegacy implements JComponentRouterRulesInterface
{
    /**
     * Constructor for this legacy router
     *
     * @param JComponentRouterView $router The router this rule belongs to
     *
     * @since       3.6
     * @deprecated  4.0
     */
    public function __construct($router)
    {
        $this->router = $router;
    }

    /**
     * Preprocess the route for the com_content component
     *
     * @param array  &$query An array of URL arguments
     *
     * @return  void
     *
     * @since       3.6
     * @deprecated  4.0
     */
    public function preprocess(&$query)
    {
    }

    /**
     * Build the route for the com_content component
     *
     * @param array  &$query An array of URL arguments
     * @param array  &$segments The URL arguments to use to assemble the subsequent URL.
     *
     * @return  void
     *
     * @since       3.6
     * @deprecated  4.0
     */
    public function build(&$query, &$segments)
    {
        // Get a menu item based on Itemid or currently active
        $params = JComponentHelper::getParams('com_content');
        $advanced = $params->get('sef_advanced_link', 0);

        // We need a menu item.  Either the one specified in the query, or the current active one if none specified
        if (empty($query['Itemid'])) {
            $menuItem = $this->router->menu->getActive();
            $menuItemGiven = false;
        } else {
            $menuItem = $this->router->menu->getItem($query['Itemid']);
            $menuItemGiven = true;
        }

        // Check again
        if ($menuItemGiven && isset($menuItem) && $menuItem->component != 'com_content') {
            $menuItemGiven = false;
            unset($query['Itemid']);
        }

        if (isset($query['view'])) {
            $view = $query['view'];
        } else {
            // We need to have a view in the query or it is an invalid URL
            return;
        }

        // Are we dealing with an article or category that is attached to a menu item?
        if ($menuItem !== null
            && $menuItem->query['view'] == $query['view']
            && isset($menuItem->query['id'], $query['id'])
            && $menuItem->query['id'] == (int)$query['id']) {
            unset($query['view']);

            if (isset($query['catid'])) {
                unset($query['catid']);
            }

            if (isset($query['layout'])) {
                unset($query['layout']);
            }

            unset($query['id']);

            return;
        }

        if ($view == 'category' || $view == 'article') {
            if (!$menuItemGiven) {
                $segments[] = $view;
            }

            unset($query['view']);

            if ($view == 'article') {
                if (isset($query['id']) && isset($query['catid']) && $query['catid']) {
                    $catid = $query['catid'];

                    // Make sure we have the id and the alias
                    if (strpos($query['id'], ':') === false) {
                        $db = JFactory::getDbo();
                        $dbQuery = $db->getQuery(true)
                            ->select('alias')
                            ->from('#__content')
                            ->where('id=' . (int)$query['id']);
                        $db->setQuery($dbQuery);
                        $alias = $db->loadResult();
                        $query['id'] = $query['id'] . ':' . $alias;
                    }
                } else {
                    // We should have these two set for this view.  If we don't, it is an error
                    return;
                }
            } else {
                if (isset($query['id'])) {
                    $catid = $query['id'];
                } else {
                    // We should have id set for this view.  If we don't, it is an error
                    return;
                }
            }

            if ($menuItemGiven && isset($menuItem->query['id'])) {
                $mCatid = $menuItem->query['id'];
            } else {
                $mCatid = 0;
            }

            $categories = JCategories::getInstance('Content');
            $category = $categories->get($catid);

            if (!$category) {
                // We couldn't find the category we were given.  Bail.
                return;
            }

            $path = array_reverse($category->getPath());

            $array = array();

            foreach ($path as $id) {
                if ((int)$id == (int)$mCatid) {
                    break;
                }

                list($tmp, $id) = explode(':', $id, 2);

                $array[] = $id;
            }

            $array = array_reverse($array);

            if (!$advanced && count($array)) {
                $array[0] = (int)$catid . ':' . $array[0];
            }

            $segments = array_merge($segments, $array);

            if ($view == 'article') {
                if ($advanced) {
                    list($tmp, $id) = explode(':', $query['id'], 2);
                } else {
                    $id = $query['id'];
                }

                $segments[] = $id;
            }

            unset($query['id'], $query['catid']);
        }

        if ($view == 'archive') {
            if (!$menuItemGiven) {
                $segments[] = $view;
                unset($query['view']);
            }

            if (isset($query['year'])) {
                if ($menuItemGiven) {
                    $segments[] = $query['year'];
                    unset($query['year']);
                }
            }

            if (isset($query['year']) && isset($query['month'])) {
                if ($menuItemGiven) {
                    $segments[] = $query['month'];
                    unset($query['month']);
                }
            }
        }

        if ($view == 'featured') {
            if (!$menuItemGiven) {
                $segments[] = $view;
            }

            unset($query['view']);
        }

        /*
         * If the layout is specified and it is the same as the layout in the menu item, we
         * unset it so it doesn't go into the query string.
         */
        if (isset($query['layout'])) {
            if ($menuItemGiven && isset($menuItem->query['layout'])) {
                if ($query['layout'] == $menuItem->query['layout']) {
                    unset($query['layout']);
                }
            } else {
                if ($query['layout'] == 'default') {
                    unset($query['layout']);
                }
            }
        }

        $total = count($segments);

        for ($i = 0; $i < $total; $i++) {
            $segments[$i] = str_replace(':', '-', $segments[$i]);
        }
    }

    /**
     * Parse the segments of a URL.
     *
     * @param array  &$segments The segments of the URL to parse.
     * @param array  &$vars The URL attributes to be used by the application.
     *
     * @return  void
     *
     * @since       3.6
     * @deprecated  4.0
     */
    public function parse(&$segments, &$vars)
    {
        $total = count($segments);

        for ($i = 0; $i < $total; $i++) {
            $segments[$i] = preg_replace('/-/', ':', $segments[$i], 1);
        }

        // Get the active menu item.
        $item = $this->router->menu->getActive();
        $params = JComponentHelper::getParams('com_content');
        $advanced = $params->get('sef_advanced_link', 0);
        $db = JFactory::getDbo();

        // Count route segments
        $count = count($segments);

        /*
         * Standard routing for articles.  If we don't pick up an Itemid then we get the view from the segments
         * the first segment is the view and the last segment is the id of the article or category.
         */
        if (!isset($item)) {
            $vars['view'] = $segments[0];
            $vars['id'] = $segments[$count - 1];

            return;
        }

        /*
         * If there is only one segment, then it points to either an article or a category.
         * We test it first to see if it is a category.  If the id and alias match a category,
         * then we assume it is a category.  If they don't we assume it is an article
         */
        if ($count == 1) {
            // We check to see if an alias is given.  If not, we assume it is an article
            if (strpos($segments[0], ':') === false) {
                $vars['view'] = 'article';
                $vars['id'] = (int)$segments[0];

                return;
            }

            list($id, $alias) = explode(':', $segments[0], 2);

            // First we check if it is a category
            $category = JCategories::getInstance('Content')->get($id);

            if ($category && $category->alias == $alias) {
                $vars['view'] = 'category';
                $vars['id'] = $id;

                return;
            } else {
                $query = $db->getQuery(true)
                    ->select($db->quoteName(array('alias', 'catid')))
                    ->from($db->quoteName('#__content'))
                    ->where($db->quoteName('id') . ' = ' . (int)$id);
                $db->setQuery($query);
                $article = $db->loadObject();

                if ($article) {
                    if ($article->alias == $alias) {
                        $vars['view'] = 'article';
                        $vars['catid'] = (int)$article->catid;
                        $vars['id'] = (int)$id;

                        return;
                    }
                }
            }
        }

        /*
         * If there was more than one segment, then we can determine where the URL points to
         * because the first segment will have the target category id prepended to it.  If the
         * last segment has a number prepended, it is an article, otherwise, it is a category.
         */
        if (!$advanced) {
            $cat_id = (int)$segments[0];

            $article_id = (int)$segments[$count - 1];

            if ($article_id > 0) {
                $vars['view'] = 'article';
                $vars['catid'] = $cat_id;
                $vars['id'] = $article_id;
            } else {
                $vars['view'] = 'category';
                $vars['id'] = $cat_id;
            }

            return;
        }

        // We get the category id from the menu item and search from there
        $id = $item->query['id'];
        $category = JCategories::getInstance('Content')->get($id);

        if (!$category) {
            JError::raiseError(404, JText::_('COM_CONTENT_ERROR_PARENT_CATEGORY_NOT_FOUND'));

            return;
        }

        $categories = $category->getChildren();
        $vars['catid'] = $id;
        $vars['id'] = $id;
        $found = 0;

        foreach ($segments as $segment) {
            $segment = str_replace(':', '-', $segment);

            foreach ($categories as $category) {
                if ($category->alias == $segment) {
                    $vars['id'] = $category->id;
                    $vars['catid'] = $category->id;
                    $vars['view'] = 'category';
                    $categories = $category->getChildren();
                    $found = 1;
                    break;
                }
            }

            if ($found == 0) {
                if ($advanced) {
                    $db = JFactory::getDbo();
                    $query = $db->getQuery(true)
                        ->select($db->quoteName('id'))
                        ->from('#__content')
                        ->where($db->quoteName('catid') . ' = ' . (int)$vars['catid'])
                        ->where($db->quoteName('alias') . ' = ' . $db->quote($segment));
                    $db->setQuery($query);
                    $cid = $db->loadResult();
                } else {
                    $cid = $segment;
                }

                $vars['id'] = $cid;

                if ($item->query['view'] == 'archive' && $count != 1) {
                    $vars['year'] = $count >= 2 ? $segments[$count - 2] : null;
                    $vars['month'] = $segments[$count - 1];
                    $vars['view'] = 'archive';
                } else {
                    $vars['view'] = 'article';
                }
            }

            $found = 0;
        }
    }
}