Clear Cache now also clears the Data folder, File Manager and any Plu…

…gin Cache files

For feature #820. Also added PLG_clearCache function so plugins can clear any of their own caches.

language/english.php

@@ -1554,7 +1554,7 @@
     153 => 'You last emailed an article %1$d seconds ago.  This site requires at least %2$d seconds between emailing articles.',
     400 => 'Not all required fields have been passed validation', // Error codes in the 400 range reserved for CUSTOM membership
     401 => 'Please enter Fullname',
-    500 => 'The Template Cache has been successfully cleared.'
+    500 => 'The Data, Template, Resource, and File Manager Cache has been successfully cleared.'
 );
 
 ###############################################################################

language/english_utf-8.php

@@ -1555,7 +1555,7 @@
     153 => 'You last emailed an article %1$d seconds ago.  This site requires at least %2$d seconds between emailing articles.',
     400 => 'Not all required fields have been passed validation', // Error codes in the 400 range reserved for CUSTOM membership
     401 => 'Please enter Fullname',
-    500 => 'The Template Cache has been successfully cleared.'
+    500 => 'The Data, Template, Resource, and File Manager Cache has been successfully cleared.'
 );
 
 ###############################################################################

language/japanese_utf-8.php

@@ -1556,7 +1556,7 @@
     153 => 'あなたは %1$d 秒前に友だちに記事を送信しています。次に送信する前に %2$d 秒以上あけてください。',
     400 => '検証に通っていない必須のフィールドがあります。',
     401 => '氏名を入力してください。',
-    500 => 'テンプレートのキャッシュを削除しました。'
+    500 => 'The Data, Template, Resource, and File Manager Cache has been successfully cleared.'
 );
 
 ###############################################################################

public_html/admin/clearctl.php

@@ -40,12 +40,72 @@
     exit;
 }
 
+// Clean directory
+function clean_directory($dir, $leave_dirs = array(), $leave_files = array()) { 
+
+    foreach( glob("$dir/*") as $file ) {
+        if (is_dir($file)) {
+            if (!in_array(basename($file), $leave_dirs)) {
+                delete_files($file); // delete all sub directories and files in those directories
+            }
+        } elseif( !in_array(basename($file), $leave_files) ) {
+            unlink($file);
+        }
+    }
+}
+
+// Delete all files in a directory and any sub directory
+function delete_files($dir) { 
+
+    foreach(glob($dir . '/*') as $file) { 
+        if (is_dir($file)) {
+            delete_files($file); 
+        } else {
+            unlink($file); 
+        }
+    } 
+    rmdir($dir); 
+}
+
 /*
  * Main processing
  */
-CTL_clearCache(); // Clearing Template Cache
+
+// Clearing Theme Template Cache
+CTL_clearCache(); 
+
+// Clearing Resource Cache (CSS, and Javascript concatenated and minified files)
+Geeklog\Cache::clear(); 
+
+// Clean out Data directory (includes things like temp uploaded plugin files, user batch files, etc...)
+$leave_dirs = array('cache', 'layout_cache', 'layout_css');
+$leave_files = array('cacert.pem', 'README');
+clean_directory($_CONF['path_data'], $leave_dirs, $leave_files);
+
+// File Manager Thumbnail Files
+
+$leave_dirs = array();
+$leave_files = array('index.html');
+clean_directory($_CONF['path_images'] . '_thumbs/articles/', $leave_dirs, $leave_files);
+
+$leave_dirs = array();
+$leave_files = array('index.html');
+clean_directory($_CONF['path_images'] . '_thumbs/userphotos/', $leave_dirs, $leave_files);
+
+$leave_dirs = array();
+$leave_files = array('index.html');
+clean_directory($_CONF['path_images'] . '_thumbs/library/image/', $leave_dirs, $leave_files);
+
+$leave_dirs = array('Image');
+$leave_files = array();
+clean_directory($_CONF['path_images'] . '_thumbs/library/', $leave_dirs, $leave_files);
+
+$leave_dirs = array('articles', 'library', 'userphotos');
+$leave_files = array();
+clean_directory($_CONF['path_images'] . '_thumbs/', $leave_dirs, $leave_files);
 
-Geeklog\Cache::clear(); // Clearing Resource Cache (CSS, and Javascript concatenated and minified files)
+// Allow Plugins to clear any cached items
+PLG_clearCache(); 
 
 COM_redirect($_CONF['site_admin_url'] . '/index.php?msg=500');
 

system/lib-plugins.php

@@ -2315,6 +2315,27 @@ function PLG_getItemInfo($type, $id, $what, $uid = 0, $options = array())
     return PLG_callFunctionForOnePlugin($function, $args);
 }
 
+/**
+ * Asks each plugin tif they want to clear any cache of files they control
+ * Used by clear cache in Geeklog Administration
+ *
+ * @return   array     Plugins that cleared their cache files and if they where successful or not
+ */
+function PLG_clearCache()
+{
+    global $_PLUGINS;
+
+    $plugin_cache_name = array();
+    foreach ($_PLUGINS as $pi_name) {
+        $function = 'plugin_clearcache_' . $pi_name;
+        if (function_exists($function)) {
+            $plugin_cache_name[$pi_name] = $function(); // Should return true if success
+        }
+    }
+
+    return $plugin_cache_name;
+}
+
 /**
  * Geeklog is about to perform an operation on a trackback or pingback comment
  * to one of the items under the plugin's control and asks for the plugin's