<?php /* Question2Answer by Gideon Greenspan and contributors http://www.question2answer.org/ File: qa-plugin/xml-sitemap/qa-xml-sitemap.php Description: Page module class for XML sitemap plugin This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. More about this license: http://www.question2answer.org/license.php */ class qa_xml_sitemap { public function option_default($option) { switch ($option) { case 'xml_sitemap_show_questions': case 'xml_sitemap_show_users': case 'xml_sitemap_show_tag_qs': case 'xml_sitemap_show_category_qs': case 'xml_sitemap_show_categories': return true; break; } } public function admin_form() { require_once QA_INCLUDE_DIR.'util/sort.php'; $saved=false; if (qa_clicked('xml_sitemap_save_button')) { qa_opt('xml_sitemap_show_questions', (int)qa_post_text('xml_sitemap_show_questions_field')); if (!QA_FINAL_EXTERNAL_USERS) qa_opt('xml_sitemap_show_users', (int)qa_post_text('xml_sitemap_show_users_field')); if (qa_using_tags()) qa_opt('xml_sitemap_show_tag_qs', (int)qa_post_text('xml_sitemap_show_tag_qs_field')); if (qa_using_categories()) { qa_opt('xml_sitemap_show_category_qs', (int)qa_post_text('xml_sitemap_show_category_qs_field')); qa_opt('xml_sitemap_show_categories', (int)qa_post_text('xml_sitemap_show_categories_field')); } $saved=true; } $form=array( 'ok' => $saved ? 'XML sitemap settings saved' : null, 'fields' => array( 'questions' => array( 'label' => 'Include question pages', 'type' => 'checkbox', 'value' => (int)qa_opt('xml_sitemap_show_questions'), 'tags' => 'name="xml_sitemap_show_questions_field"', ), ), 'buttons' => array( array( 'label' => 'Save Changes', 'tags' => 'name="xml_sitemap_save_button"', ), ), ); if (!QA_FINAL_EXTERNAL_USERS) $form['fields']['users']=array( 'label' => 'Include user pages', 'type' => 'checkbox', 'value' => (int)qa_opt('xml_sitemap_show_users'), 'tags' => 'name="xml_sitemap_show_users_field"', ); if (qa_using_tags()) $form['fields']['tagqs']=array( 'label' => 'Include question list for each tag', 'type' => 'checkbox', 'value' => (int)qa_opt('xml_sitemap_show_tag_qs'), 'tags' => 'name="xml_sitemap_show_tag_qs_field"', ); if (qa_using_categories()) { $form['fields']['categoryqs']=array( 'label' => 'Include question list for each category', 'type' => 'checkbox', 'value' => (int)qa_opt('xml_sitemap_show_category_qs'), 'tags' => 'name="xml_sitemap_show_category_qs_field"', ); $form['fields']['categories']=array( 'label' => 'Include category browser', 'type' => 'checkbox', 'value' => (int)qa_opt('xml_sitemap_show_categories'), 'tags' => 'name="xml_sitemap_show_categories_field"', ); } return $form; } public function suggest_requests() { return array( array( 'title' => 'XML Sitemap', 'request' => 'sitemap.xml', 'nav' => null, // 'M'=main, 'F'=footer, 'B'=before main, 'O'=opposite main, null=none ), ); } public function match_request($request) { return ($request=='sitemap.xml'); } public function process_request($request) { @ini_set('display_errors', 0); // we don't want to show PHP errors inside XML $siteurl=qa_opt('site_url'); header('Content-type: text/xml; charset=utf-8'); echo '<?xml version="1.0" encoding="UTF-8"?>'."\n"; echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">'."\n"; // Question pages if (qa_opt('xml_sitemap_show_questions')) { $hotstats=qa_db_read_one_assoc(qa_db_query_sub( "SELECT MIN(hotness) AS base, MAX(hotness)-MIN(hotness) AS spread FROM ^posts WHERE type='Q'" )); $nextpostid=0; while (1) { $questions=qa_db_read_all_assoc(qa_db_query_sub( "SELECT postid, title, hotness FROM ^posts WHERE postid>=# AND type='Q' ORDER BY postid LIMIT 100", $nextpostid )); if (!count($questions)) break; foreach ($questions as $question) { $this->sitemap_output(qa_q_request($question['postid'], $question['title']), 0.1+0.9*($question['hotness']-$hotstats['base'])/(1+$hotstats['spread'])); $nextpostid=max($nextpostid, $question['postid']+1); } } } // User pages if ((!QA_FINAL_EXTERNAL_USERS) && qa_opt('xml_sitemap_show_users')) { $nextuserid=0; while (1) { $users=qa_db_read_all_assoc(qa_db_query_sub( "SELECT userid, handle FROM ^users WHERE userid>=# ORDER BY userid LIMIT 100", $nextuserid )); if (!count($users)) break; foreach ($users as $user) { $this->sitemap_output('user/'.$user['handle'], 0.25); $nextuserid=max($nextuserid, $user['userid']+1); } } } // Tag pages if (qa_using_tags() && qa_opt('xml_sitemap_show_tag_qs')) { $nextwordid=0; while (1) { $tagwords=qa_db_read_all_assoc(qa_db_query_sub( "SELECT wordid, word, tagcount FROM ^words WHERE wordid>=# AND tagcount>0 ORDER BY wordid LIMIT 100", $nextwordid )); if (!count($tagwords)) break; foreach ($tagwords as $tagword) { $this->sitemap_output('tag/'.$tagword['word'], 0.5/(1+(1/$tagword['tagcount']))); // priority between 0.25 and 0.5 depending on tag frequency $nextwordid=max($nextwordid, $tagword['wordid']+1); } } } // Question list for each category if (qa_using_categories() && qa_opt('xml_sitemap_show_category_qs')) { $nextcategoryid=0; while (1) { $categories=qa_db_read_all_assoc(qa_db_query_sub( "SELECT categoryid, backpath FROM ^categories WHERE categoryid>=# AND qcount>0 ORDER BY categoryid LIMIT 2", $nextcategoryid )); if (!count($categories)) break; foreach ($categories as $category) { $this->sitemap_output('questions/'.implode('/', array_reverse(explode('/', $category['backpath']))), 0.5); $nextcategoryid=max($nextcategoryid, $category['categoryid']+1); } } } // Pages in category browser if (qa_using_categories() && qa_opt('xml_sitemap_show_categories')) { $this->sitemap_output('categories', 0.5); $nextcategoryid=0; while (1) { // only find categories with a child $categories=qa_db_read_all_assoc(qa_db_query_sub( "SELECT parent.categoryid, parent.backpath FROM ^categories AS parent ". "JOIN ^categories AS child ON child.parentid=parent.categoryid WHERE parent.categoryid>=# GROUP BY parent.categoryid LIMIT 100", $nextcategoryid )); if (!count($categories)) break; foreach ($categories as $category) { $this->sitemap_output('categories/'.implode('/', array_reverse(explode('/', $category['backpath']))), 0.5); $nextcategoryid=max($nextcategoryid, $category['categoryid']+1); } } } // Finish up... echo "</urlset>\n"; return null; } /** * @deprecated This function will become private in Q2A 1.8. It is specific to this plugin and * should not be used by outside code. */ public function sitemap_output($request, $priority) { echo "\t<url>\n". "\t\t<loc>".qa_xml(qa_path($request, null, qa_opt('site_url')))."</loc>\n". "\t\t<priority>".max(0, min(1.0, $priority))."</priority>\n". "\t</url>\n"; } }