c++ - 使用 Poco 的多深度目录观察器

Question

如何使用 POCO 创建多深度目录观察器？

如果它主要在D:\ddd，我们甚至去到D:\ddd\d1\d2\d3\NewTextDoc.txt，那么它也是应该通知我。我只能对初始目录执行此操作。我使用了事件监听器，如果初始目录中发生任何事情，它们会通知我。

这是我的有效代码:

try
{
  AutoPtr<PropertyFileConfiguration> pConf = new 
  PropertyFileConfiguration("EventListener.properties");
  Poco::DirectoryWatcher dirWatcher(pConf->getString("path"), 
  Poco::DirectoryWatcher::DW_FILTER_ENABLE_ALL, 
  Poco::DirectoryWatcher::DW_DEFAULT_SCAN_INTERVAL);

  dirWatcher.itemModified       += Poco::delegate(this, &ClsDirWatcher::onFileModified);        //good
  dirWatcher.itemMovedFrom      += Poco::delegate(this, &ClsDirWatcher::onFileMovedFrom);       //no way, seems only linux
  dirWatcher.itemMovedTo        += Poco::delegate(this, &ClsDirWatcher::onFileMovedTo);         //no way, seems only linux
  dirWatcher.itemAdded          += Poco::delegate(this, &ClsDirWatcher::onFileAdded);           //working fine
  dirWatcher.itemRemoved        += Poco::delegate(this, &ClsDirWatcher::onFileRemoved);         //lol!!!

  waitForTerminationRequest();    
}
catch (Poco::Exception& exc)
{
  logger().log(exc);
}

Answer 1

我遇到了同样的问题。根据Poco documentation :

Note that changes to files in subdirectories of the watched directory are not reported. Separate DirectoryWatcher objects must be created for these directories if they should be watched.

所以您需要做的是为每个您想要监视的现有子目录生成一个新的目录监视程序。您还需要在 itemAdded 委托(delegate)中放置一些逻辑，以便在您正在监视的目录中创建新目录时生成新的监视器。