125 lines
4.3 KiB
PHP
125 lines
4.3 KiB
PHP
<?php
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// $Id: xmlsitemap.pages.inc,v 1.6 2010/01/24 05:54:40 davereid Exp $
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/**
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* @file
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* Page callbacks for the xmlsitemap module.
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*
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* @ingroup xmlsitemap
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*/
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/**
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* Output a sitemap page.
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*
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* @see xmlsitemap_file_transfer()
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*/
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function xmlsitemap_output_chunk($chunk = 0) {
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global $language;
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// @todo Remove this from the final version?
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if (isset($_GET['refresh']) && user_access('administer xmlsitemap')) {
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module_load_include('inc', 'xmlsitemap');
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xmlsitemap_generate($chunk, $language);
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}
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$file = xmlsitemap_get_chunk_file($chunk, $language->language);
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xmlsitemap_output_file($file);
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}
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/**
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* Output the contents of a file to the browser and check caching headers.
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*/
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function xmlsitemap_output_file($file, array $headers = array()) {
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if (!file_exists($file) || !is_readable($file)) {
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return MENU_NOT_FOUND;
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}
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$mtime = filemtime($file);
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$last_modified = gmdate(DATE_RFC1123, $mtime);
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$etag = '"' . md5($last_modified) . '"';
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// See if the client has provided the required HTTP headers.
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$if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']) : FALSE;
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$if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) : FALSE;
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if ($if_modified_since && $if_none_match && $if_none_match == $etag && $if_modified_since == $last_modified) {
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header('HTTP/1.1 304 Not Modified');
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// All 304 responses must send an etag if the 200 response for the same object contained an etag
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header('Etag: ' . $etag);
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exit;
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}
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$headers += array(
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'Content-type' => 'text/xml; charset=utf-8',
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//'Content-length' => filesize($file),
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'Last-modified' => $last_modified,
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'Etag' => $etag,
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'Expires' => gmdate(DATE_RFC1123, $mtime + variable_get('xmlsitemap_minimum_lifetime', 0)),
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'Cache-Control' => 'must-revalidate',
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'X-Robots-Tag' => 'noindex, follow',
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);
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// Transfer the file as output.
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xmlsitemap_file_transfer($file, $headers);
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}
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/**
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* Modified version of file_transfer() that invokes hook_exit()s afterwards.
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*
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* @see file_transfer()
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*/
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function xmlsitemap_file_transfer($uri, $headers) {
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if (ob_get_level()) {
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ob_end_clean();
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}
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foreach ($headers as $name => $value) {
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drupal_add_http_header($name, $value);
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}
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drupal_send_headers();
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$scheme = $scheme = variable_get('file_default_scheme', 'public');
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// Transfer file in 1024 byte chunks to save memory usage.
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if ($scheme && file_stream_wrapper_valid_scheme($scheme) && $fd = fopen($uri, 'rb')) {
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while (!feof($fd)) {
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print fread($fd, 1024);
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}
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fclose($fd);
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}
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else {
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drupal_not_found();
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}
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drupal_exit();
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}
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/**
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* Output an XML transformation file for the sitemap XML.
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*/
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function xmlsitemap_output_xsl() {
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// Read the XSL content from the file.
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$module_path = drupal_get_path('module', 'xmlsitemap');
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$xsl_content = file_get_contents($module_path . '/xsl/xmlsitemap.xsl');
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// Make sure the strings in the XSL content are translated properly.
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$replacements = array(
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'Sitemap file' => t('Sitemap file'),
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'Generated by the <a href="http://drupal.org/project/xmlsitemap">Drupal XML sitemap module</a>.' => t('Generated by the <a href="@link-xmlsitemap">Drupal XML sitemap module</a>.', array('@link-xmlsitemap' => 'http://drupal.org/project/xmlsitemap')),
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'Number of sitemaps in this index' => t('Number of sitemaps in this index'),
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'Click on the table headers to change sorting.' => t('Click on the table headers to change sorting.'),
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'Sitemap URL' => t('Sitemap URL'),
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'Last modification date' => t('Last modification date'),
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'Number of URLs in this sitemap' => t('Number of URLs in this sitemap'),
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'URL location' => t('URL location'),
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'Change frequency' => t('Change frequency'),
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'Priority' => t('Priority'),
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'[jquery]' => base_path() . 'misc/jquery.js',
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'[jquery-tablesort]' => base_path() . $module_path . '/xsl/jquery.tablesorter.min.js',
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'[xsl-js]' => base_path() . $module_path . '/xsl/xmlsitemap.xsl.js',
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'[xsl-css]' => base_path() . $module_path . '/xsl/xmlsitemap.xsl.css',
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);
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$xsl_content = strtr($xsl_content, $replacements);
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// Output the XSL content.
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drupal_add_http_header('Content-type', 'application/xml; charset=utf-8');
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drupal_add_http_header('X-Robots-Tag', 'noindex, follow');
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echo $xsl_content;
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}
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