// Copyright (c) 2014-2015 The Notify Authors. All rights reserved. // Use of this source code is governed by the MIT license that can be // found in the LICENSE file. // +build windows package notify // eventmask uses ei to create a new event which contains internal flags used by // notify package logic. If one of FileAction* masks is detected, this function // adds corresponding FileNotifyChange* values. This allows non registered // FileAction* events to be passed on. func eventmask(ei EventInfo, extra Event) (e Event) { if e = ei.Event() | extra; e&fileActionAll != 0 { if ev, ok := ei.(*event); ok { switch ev.ftype { case fTypeFile: e |= FileNotifyChangeFileName case fTypeDirectory: e |= FileNotifyChangeDirName case fTypeUnknown: e |= fileNotifyChangeModified } return e &^ fileActionAll } } return } // matches reports a match only when: // // - for user events, when event is present in the given set // - for internal events, when additionally both event and set have omit bit set // // Internal events must not be sent to user channels and vice versa. func matches(set, event Event) bool { return (set&omit)^(event&omit) == 0 && (set&event == event || set&fileNotifyChangeModified&event != 0) }