/**
* Calculates the contents of a directory recursively. Warning: this might be a long process.
*
* @author Nevma (info@nevma.gr)
*
* @param string $dir The directory whose contents to calculate recursively.
*
* @return int The total size of the directory and its children recursively in bytes.
*/
function adaptive_images_plugin_dir_size($dir)
{
// var_dump( $dir );
// echo '<hr />';
// $result = exec( 'du -hcs ' . $dir, $output, $code );
// var_dump( $result ); // ==> empty when not done, echoes "3.5M Total" when done
// echo '<hr />';
// var_dump( $output ); // ==> empty when not done, holds lines of command output when done
// echo '<hr />';
// var_dump( $code ); // ==> 0 when command executed successfully, 1 when not
// echo '<hr />';
// return;
// Keep count of recursively accessed files.
static $total_files = 0;
static $total_size = 0;
static $total_dirs = 0;
// Do not take into acount files and symbolic links.
if (is_dir($dir) && !is_link($dir)) {
$objects = scandir($dir);
foreach ($objects as $object) {
if ($object != "." && $object != "..") {
$file = $dir . "/" . $object;
if (filetype($file) != "dir") {
// Add file size in total.
$total_files++;
$total_size += filesize($file);
} else {
// Descend into directory children.
$total_dirs++;
adaptive_images_plugin_dir_size($file);
}
}
}
}
return array('files' => $total_files, 'size' => $total_size, 'dirs' => $total_dirs);
}
/**
* Takes care of the plugin settings page actions.
*
* @author Nevma (info@nevma.gr)
*
* @return void Nothing really!.
*/
function adaptive_images_admin_settings_actions()
{
if (!isset($_GET['action'])) {
return;
}
// Cleanup image cache action.
if ($_GET['action'] == 'cleanup-image-cache' && wp_verify_nonce($_GET['_wpnonce'], 'adaptive-images-cleanup-image-cache')) {
$cache_path = adaptive_images_plugin_get_cahe_directory_path();
$result = adaptive_images_actions_rmdir_recursive($cache_path);
add_settings_error('adaptive-images-settings', 'adaptive-images-settings-error', 'Cleanup image cache <hr />' . '<p>Total files deleted from the adaptive images cache: ' . $result['files'] . '</p>' . '<p>Total directories deleted from the adaptive images cache: ' . $result['dirs'] . '</p>' . '<p>' . 'Total size deleted from the adaptive images cache: ' . adaptive_images_plugin_file_size_human($result['size']) . '</p>', 'updated');
}
// Calculate image cache size action.
if ($_GET['action'] == 'calculate-cache-size' && wp_verify_nonce($_GET['_wpnonce'], 'adaptive-images-calculate-cache-size')) {
$cache_path = adaptive_images_plugin_get_cahe_directory_path();
$cache_size = adaptive_images_plugin_dir_size($cache_path);
add_settings_error('adaptive-images-settings', 'adaptive-images-settings-error', 'Calculate cache size <hr />' . '<p>Total files in the adaptive images cache: ' . $cache_size['files'] . '</p>' . '<p>Total directories in the adaptive images cache: ' . $cache_size['dirs'] . '</p>' . '<p>' . 'Total size of the adaptive images cache: ' . adaptive_images_plugin_file_size_human($cache_size['size']) . '</p>', 'updated');
}
// Print plugin info action.
if ($_GET['action'] == 'print-debug-info' && wp_verify_nonce($_GET['_wpnonce'], 'adaptive-images-print-debug-info')) {
add_settings_error('adaptive-images-settings', 'adaptive-images-settings-error', 'Debug info <hr />' . adaptive_images_debug_general_info(FALSE), 'updated');
}
// Print system info action.
if ($_GET['action'] == 'print-diagnostic-info' && wp_verify_nonce($_GET['_wpnonce'], 'adaptive-images-print-diagnostic-info')) {
add_settings_error('adaptive-images-settings', 'adaptive-images-settings-error', 'System information <hr />' . adaptive_images_debug_diagnostic_info(FALSE), 'updated');
}
}
