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108 lines
3.1 KiB
Go
108 lines
3.1 KiB
Go
// Copyright 2018 gf Author(https://github.com/gogf/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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// Package gspath implements file index and search for folders.
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//
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package gspath
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import (
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"runtime"
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"strings"
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"github.com/gogf/gf/os/gfile"
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"github.com/gogf/gf/os/gfsnotify"
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"github.com/gogf/gf/text/gstr"
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)
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// 递归添加目录下的文件
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func (sp *SPath) updateCacheByPath(path string) {
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if sp.cache == nil {
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return
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}
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sp.addToCache(path, path)
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}
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// 格式化name返回符合规范的缓存名称，分隔符号统一为'/'，且前缀必须以'/'开头(类似HTTP URI).
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func (sp *SPath) formatCacheName(name string) string {
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if runtime.GOOS != "linux" {
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name = gstr.Replace(name, "\\", "/")
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}
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return "/" + strings.Trim(name, "./")
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}
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// 根据path计算出对应的缓存name, dirPath为检索根目录路径
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func (sp *SPath) nameFromPath(filePath, rootPath string) string {
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name := gstr.Replace(filePath, rootPath, "")
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name = sp.formatCacheName(name)
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return name
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}
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// 按照一定数据结构生成缓存的数据项字符串
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func (sp *SPath) makeCacheValue(filePath string, isDir bool) string {
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if isDir {
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return filePath + "_D_"
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}
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return filePath + "_F_"
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}
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// 按照一定数据结构解析数据项字符串
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func (sp *SPath) parseCacheValue(value string) (filePath string, isDir bool) {
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if value[len(value)-2 : len(value)-1][0] == 'F' {
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return value[:len(value)-3], false
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}
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return value[:len(value)-3], true
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}
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// 添加path到缓存中(递归)
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func (sp *SPath) addToCache(filePath, rootPath string) {
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// 首先添加自身
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idDir := gfile.IsDir(filePath)
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sp.cache.SetIfNotExist(sp.nameFromPath(filePath, rootPath), sp.makeCacheValue(filePath, idDir))
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// 如果添加的是目录，那么需要递归添加
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if idDir {
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if files, err := gfile.ScanDir(filePath, "*", true); err == nil {
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//fmt.Println("gspath add to cache:", filePath, files)
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for _, path := range files {
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sp.cache.SetIfNotExist(sp.nameFromPath(path, rootPath), sp.makeCacheValue(path, gfile.IsDir(path)))
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}
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} else {
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//fmt.Errorf(err.Error())
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}
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}
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}
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// 添加文件目录监控(递归)，当目录下的文件有更新时，会同时更新缓存。
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// 这里需要注意的点是，由于添加监听是递归添加的，那么假如删除一个目录，那么该目录下的文件(包括目录)也会产生一条删除事件，总共会产生N条事件。
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func (sp *SPath) addMonitorByPath(path string) {
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if sp.cache == nil {
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return
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}
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_, _ = gfsnotify.Add(path, func(event *gfsnotify.Event) {
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//glog.Debug(event.String())
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switch {
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case event.IsRemove():
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sp.cache.Remove(sp.nameFromPath(event.Path, path))
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case event.IsRename():
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if !gfile.Exists(event.Path) {
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sp.cache.Remove(sp.nameFromPath(event.Path, path))
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}
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case event.IsCreate():
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sp.addToCache(event.Path, path)
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}
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}, true)
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}
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// 删除监听(递归)
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func (sp *SPath) removeMonitorByPath(path string) {
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if sp.cache == nil {
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return
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}
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_ = gfsnotify.Remove(path)
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}
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