Issue #2387331 by Dave Reid: Make it possible to disable cron regeneration of...

Issue #2387331 by Dave Reid: Make it possible to disable cron regeneration of sitemaps and only use drush xmlsitemap-regenerate.

xmlsitemap.admin.inc

@@ -348,6 +348,12 @@ function xmlsitemap_settings_form($form, &$form_state) {
     '#title' => t('Enable developer mode to expose additional settings.'),
     '#default_value' => variable_get('xmlsitemap_developer_mode', 0),
   );
+  $form['advanced']['xmlsitemap_disable_cron_regeneration'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Disable cron generation of sitemap files.'),
+    '#default_value' => variable_get('xmlsitemap_disable_cron_regeneration', 0),
+    '#description' => t('This can be disabled if other methods are being used to generate the sitemap files, like <em>drush xmlsitemap-regenerate</em>.'),
+  );
 
   $form['xmlsitemap_settings'] = array(
     '#type' => 'vertical_tabs',

xmlsitemap.module

@@ -236,6 +236,10 @@ function xmlsitemap_cron() {
   if (!variable_get('xmlsitemap_regenerate_needed', FALSE)) {
     return;
   }
+  // If cron sitemap file regeneration is disabled, stop.
+  if (variable_get('xmlsitemap_disable_cron_regeneration', 0)) {
+    return;
+  }
 
   // If the minimum sitemap lifetime hasn't been passed, skip.
   $lifetime = REQUEST_TIME - variable_get('xmlsitemap_generated_last', 0);
@@ -292,6 +296,7 @@ function xmlsitemap_variables() {
     'xmlsitemap_frontpage_changefreq' => XMLSITEMAP_FREQUENCY_DAILY,
     'xmlsitemap_lastmod_format' => XMLSITEMAP_LASTMOD_MEDIUM,
     'xmlsitemap_gz' => FALSE,
+    'xmlsitemap_disable_cron_regeneration' => 0,
     // Removed variables are set to NULL so they can still be deleted.
     'xmlsitemap_regenerate_last' => NULL,
     'xmlsitemap_custom_links' => NULL,