AutoIt General Help and Support; Fileinstall and entire directory Sign in. Fileinstall and entire directory Started by mikeylikesit, December 7, 2007. Watching a Directory for Changes (The Java? Or perhaps, like the Net. Beans IDE, the application just quietly updates the file without notifying you. Autoit Fileinstall Entire Directory Of OpenAutoit Fileinstall Entire Directory DefinitionAutoIt-related Macros; Directory Macros. The entire script will now look like this: Run. FileInstall referencing a file without any path will. You can find the converter in the 'Extras' directory (Start \ AutoIt v3. DirCopy Copies a directory and all sub-directories and files. FileInstall Include and install a file with the compiled script. You can find the converter in the 'Extras' directory (Start \ AutoIt. Autoit Help Manual - Download as PDF File (.pdf), Text File (.txt) or read online. The working directory for the launched item. This is just a short AutoIt Tutorial on how you can delete all the files in a directory, without knowing the names of the files located in the directory. The following sample dialog box shows how this notification looks with the free editor. Edit: j. Edit Dialog Box Showing That a Modified File Is Detected. To implement this functionality, called file change notification, a program must be able to detect what is happening to the relevant directory on the file system. One way to do so is to poll the file system looking for changes, but this approach is inefficient. It does not scale to applications that have hundreds of open files or directories to monitor. The java. nio. file package provides a file change notification API, called the Watch Service API. This API enables you to register a directory (or directories) with the watch service. When registering, you tell the service which types of events you are interested in: file creation, file deletion, or file modification. When the service detects an event of interest, it is forwarded to the registered process. The registered process has a thread (or a pool of threads) dedicated to watching for any events it has registered for. When an event comes in, it is handled as needed. This section covers the following: The Watch. Service API is fairly low level, allowing you to customize it. You can use it as is, or you can choose to create a high- level API on top of this mechanism so that it is suited to your particular needs. Here are the basic steps required to implement a watch service: Create a Watch. Service . When registering a directory, you specify the type of events for which you want notification. You receive a Watch. Key instance for each directory that you register. Implement an infinite loop to wait for incoming events. When an event occurs, the key is signaled and placed into the watcher's queue. Retrieve the key from the watcher's queue. You can obtain the file name from the key. Retrieve each pending event for the key (there might be multiple events) and process as needed. Reset the key, and resume waiting for events. Close the service: The watch service exits when either the thread exits or when it is closed (by invoking its closed method). Watch. Keys are thread- safe and can be used with the java. You can dedicate a. Because this API is more advanced, try it out before proceeding. Save the. Watch. Dir example to your computer, and compile it. Create a test directory that will be passed to the example. Watch. Dir uses a single thread to process all events, so it blocks keyboard input while waiting for events. Either run the program in a separate window, or in the background, as follows: Play with creating, deleting, and editing files in the test directory. When any of these events occurs, a message is printed to the console. When you have finished, delete the test directory and Watch. Dir exits. Or, if you prefer, you can manually kill the process. You can also watch an entire file tree by specifying the - r option. When you specify - r, Watch. Dirwalks the file tree, registering each directory with the watch service. The first step is to create a new. Watch. Service by using the. Watch. Service method in the File. System class, as follows. Watch. Service watcher = File. Systems. get. Default(). Watch. Service(). Next, register one or more objects with the watch service. Any object that implements the. Watchable interface can be registered. The Path class implements the Watchable interface, so each directory to be monitored is registered as a Path object. As with any Watchable, the Path class implements two register methods. This page uses the two- argument version. Watch. Service, Watch. Event. Kind< ?>..). The supported. Standard. Watch. Event. Kinds event types follow: ENTRY. You do not have to register for the OVERFLOW event to receive it. The following code snippet shows how to register a Path instance for all three event types. Standard. Watch. Event. Kinds.*. Path dir = ... Three methods are provided. Returns a queued key, if available. Returns immediately with a null value, if unavailable. Time. Unit) – Returns a queued key, if one is available. If a queued key is not immediately available, the program waits until the specified time. The Time. Unit argument determines whether the specified time is nanoseconds, milliseconds, or some other unit of time. Returns a queued key. If no queued key is available, this method waits. Process the pending events for the key. You fetch the List of. Watch. Eventsfrom the. Events method. Retrieve the type of event by using the. No matter what events the key has registered for, it is possible to receive an OVERFLOW event. You can choose to handle the overflow or ignore it, but you should test for it. Retrieve the file name associated with the event. The file name is stored as the context of the event, so the. After the events for the key have been processed, you need to put the key back into a ready state by invoking. If this method returns false, the key is no longer valid and the loop can exit. This step is very important. If you fail to invoke reset, this key will not receive any further events. A watch key has a state. At any given time, its state might be one of the following: Ready indicates that the key is ready to accept events. When first created, a key is in the ready state. Signaled indicates that one or more events are queued. Once the key has been signaled, it is no longer in the ready state until the. Invalid indicates that the key is no longer active. This state happens when one of the following events occurs. The process explicitly cancels the key by using the. The directory becomes inaccessible. The watch service is. Here is an example of an event processing loop. It is taken from the. Email example, which watches a directory, waiting for new files to appear. When a new file becomes available, it is examined to determine if it is a text/plain file by using the. Content. Type(Path) method. The intention is that text/plain files will be emailed to an alias, but that implementation detail is left to the reader. The methods specific to the watch service API are shown in bold. The. Email example retrieves the file name with this code. Watch. Event< Path> ev = (Watch. Event< Path> )event. Path filename = ev. When you compile the Email example, it generates the following error. Note: Email. java uses unchecked or unsafe operations. The. Watch. Dir example avoids this error by creating a utility cast method that suppresses the unchecked warning, as follows. Suppress. Warnings(. It is well suited for any application, like an editor or IDE, that potentially has many open files and needs to ensure that the files are synchronized with the file system. It is also well suited for an application server that watches a directory, perhaps waiting for . This API is not designed for indexing a hard drive. Most file system implementations have native support for file change notification. The Watch Service API takes advantage of this support where available. However, when a file system does not support this mechanism, the Watch Service will poll the file system, waiting for events.
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