+/**
+ * Selects the first update version from the update_core option
+ *
+ * @return object the response from the API
+ */
+function get_preferred_from_update_core() {
+ $updates = get_core_updates();
+ if ( !is_array( $updates ) )
+ return false;
+ if ( empty( $updates ) )
+ return (object)array('response' => 'latest');
+ return $updates[0];
+}
+
+/**
+ * Get available core updates
+ *
+ * @param array $options Set $options['dismissed'] to true to show dismissed upgrades too,
+ * set $options['available'] to false to skip not-dismissed updates.
+ * @return array Array of the update objects
+ */
+function get_core_updates( $options = array() ) {
+ $options = array_merge( array('available' => true, 'dismissed' => false ), $options );
+ $dismissed = get_site_option( 'dismissed_update_core' );
+ if ( !is_array( $dismissed ) ) $dismissed = array();
+ $from_api = get_site_transient( 'update_core' );
+ if ( empty($from_api) )
+ return false;
+ if ( !isset( $from_api->updates ) || !is_array( $from_api->updates ) ) return false;
+ $updates = $from_api->updates;
+ if ( !is_array( $updates ) ) return false;
+ $result = array();
+ foreach($updates as $update) {
+ if ( array_key_exists( $update->current.'|'.$update->locale, $dismissed ) ) {
+ if ( $options['dismissed'] ) {
+ $update->dismissed = true;
+ $result[]= $update;
+ }
+ } else {
+ if ( $options['available'] ) {
+ $update->dismissed = false;
+ $result[]= $update;
+ }
+ }
+ }
+ return $result;
+}
+
+function dismiss_core_update( $update ) {
+ $dismissed = get_site_option( 'dismissed_update_core' );
+ $dismissed[ $update->current.'|'.$update->locale ] = true;
+ return update_site_option( 'dismissed_update_core', $dismissed );
+}
+
+function undismiss_core_update( $version, $locale ) {
+ $dismissed = get_site_option( 'dismissed_update_core' );
+ $key = $version.'|'.$locale;
+ if ( !isset( $dismissed[$key] ) ) return false;
+ unset( $dismissed[$key] );
+ return update_site_option( 'dismissed_update_core', $dismissed );
+}
+
+function find_core_update( $version, $locale ) {
+ $from_api = get_site_transient( 'update_core' );
+ if ( !is_array( $from_api->updates ) ) return false;
+ $updates = $from_api->updates;
+ foreach($updates as $update) {
+ if ( $update->current == $version && $update->locale == $locale )
+ return $update;
+ }
+ return false;
+}
+