❤️ 完整开源界面和内核 https://github.com/siyuan-note/siyuan/issues/5013

kernel/model/assets_watcher.go

@@ -0,0 +1,95 @@
+// SiYuan - Build Your Eternal Digital Garden
+// Copyright (c) 2020-present, b3log.org
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//go:build !darwin
+
+package model
+
+import (
+	"path/filepath"
+	"time"
+
+	"github.com/fsnotify/fsnotify"
+	"github.com/siyuan-note/siyuan/kernel/util"
+)
+
+var assetsWatcher *fsnotify.Watcher
+
+func WatchAssets() {
+	if "android" == util.Container {
+		return
+	}
+
+	go func() {
+		watchAssets()
+	}()
+}
+
+func watchAssets() {
+	assetsDir := filepath.Join(util.DataDir, "assets")
+	if nil != assetsWatcher {
+		assetsWatcher.Close()
+	}
+
+	var err error
+	if assetsWatcher, err = fsnotify.NewWatcher(); nil != err {
+		util.LogErrorf("add assets watcher for folder [%s] failed: %s", assetsDir, err)
+		return
+	}
+
+	go func() {
+		var (
+			timer     *time.Timer
+			lastEvent fsnotify.Event
+		)
+		timer = time.NewTimer(100 * time.Millisecond)
+		<-timer.C // timer should be expired at first
+
+		for {
+			select {
+			case event, ok := <-assetsWatcher.Events:
+				if !ok {
+					return
+				}
+
+				lastEvent = event
+				timer.Reset(time.Millisecond * 100)
+			case err, ok := <-assetsWatcher.Errors:
+				if !ok {
+					return
+				}
+				util.LogErrorf("watch assets failed: %s", err)
+			case <-timer.C:
+				//util.LogInfof("assets changed: %s", lastEvent)
+				if lastEvent.Op&fsnotify.Write == fsnotify.Write {
+					// 外部修改已有资源文件后纳入云端同步 https://github.com/siyuan-note/siyuan/issues/4694
+					IncWorkspaceDataVer()
+				}
+			}
+		}
+	}()
+
+	if err = assetsWatcher.Add(assetsDir); err != nil {
+		util.LogErrorf("add assets watcher for folder [%s] failed: %s", assetsDir, err)
+	}
+	//util.LogInfof("added file watcher [%s]", assetsDir)
+}
+
+func CloseWatchAssets() {
+	if nil != assetsWatcher {
+		assetsWatcher.Close()
+	}
+}