language);
xmlsitemap_output_file($file);
}
/**
* Output the contents of a file to the browser and check caching headers.
*/
function xmlsitemap_output_file($file, array $headers = array()) {
if (!file_exists($file) || !is_readable($file)) {
return drupal_not_found();
}
$mtime = filemtime($file);
$last_modified = gmdate(DATE_RFC1123, $mtime);
$etag = '"' . md5($last_modified) . '"';
// See if the client has provided the required HTTP headers.
$if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']) : FALSE;
$if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) : FALSE;
if ($if_modified_since && $if_none_match && $if_none_match == $etag && $if_modified_since == $last_modified) {
header('HTTP/1.1 304 Not Modified');
// All 304 responses must send an etag if the 200 response for the same object contained an etag
header('Etag: ' . $etag);
exit;
}
$headers += array(
'Content-type: text/xml; charset=utf-8',
//'Content-length: ' . filesize($file),
'Last-modified: ' . $last_modified,
'Etag: ' . $etag,
'Expires: ' . gmdate(DATE_RFC1123, $mtime + variable_get('xmlsitemap_minimum_lifetime', 0)),
'Cache-Control: must-revalidate',
'X-Robots-Tag: noindex, follow',
);
// Transfer the file as output.
xmlsitemap_file_transfer($file, $headers);
}
/**
* Modified version of file_transfer() that invokes hook_exit()s afterwards.
*
* @see file_transfer()
*/
function xmlsitemap_file_transfer($source, $headers) {
if (ob_get_level()) {
ob_end_clean();
}
foreach ($headers as $header) {
// To prevent HTTP header injection, we delete new lines that are
// not followed by a space or a tab.
// See http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2
$header = preg_replace('/\r?\n(?!\t| )/', '', $header);
drupal_set_header($header);
}
// Transfer file in 1024 byte chunks to save memory usage.
if ($handle = fopen($source, 'rb')) {
while (!feof($handle)) {
print fread($handle, 1024);
}
fclose($handle);
}
else {
drupal_not_found();
}
module_invoke_all('exit');
exit();
}
/**
* Output an XML transformation file for the sitemap XML.
*/
function xmlsitemap_output_xsl() {
// Read the XSL content from the file.
$module_path = drupal_get_path('module', 'xmlsitemap');
$xsl_content = file_get_contents($module_path . '/xsl/xmlsitemap.xsl');
// Make sure the strings in the XSL content are translated properly.
$replacements = array(
'Sitemap file' => t('Sitemap file'),
'Generated by the Drupal XML sitemap module.' => t('Generated by the Drupal XML sitemap module.', array('@link-xmlsitemap' => 'http://drupal.org/project/xmlsitemap')),
'Number of sitemaps in this index' => t('Number of sitemaps in this index'),
'Click on the table headers to change sorting.' => t('Click on the table headers to change sorting.'),
'Sitemap URL' => t('Sitemap URL'),
'Last modification date' => t('Last modification date'),
'Number of URLs in this sitemap' => t('Number of URLs in this sitemap'),
'URL location' => t('URL location'),
'Change frequency' => t('Change frequency'),
'Priority' => t('Priority'),
'[jquery]' => base_path() . 'misc/jquery.js',
'[jquery-tablesort]' => base_path() . $module_path . '/xsl/jquery.tablesorter.min.js',
'[xsl-js]' => base_path() . $module_path . '/xsl/xmlsitemap.xsl.js',
'[xsl-css]' => base_path() . $module_path . '/xsl/xmlsitemap.xsl.css',
);
$xsl_content = strtr($xsl_content, $replacements);
// Output the XSL content.
drupal_set_header('Content-type: application/xml; charset=utf-8');
drupal_set_header('X-Robots-Tag: noindex, follow');
echo $xsl_content;
}