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https://github.com/transmission/transmission
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122 lines
5.2 KiB
Objective-C
122 lines
5.2 KiB
Objective-C
/* =============================================================================
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FILE: UKKQueue.h
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PROJECT: Filie
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COPYRIGHT: (c) 2003 M. Uli Kusterer, all rights reserved.
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AUTHORS: M. Uli Kusterer - UK
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LICENSES: MIT License
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REVISIONS:
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2006-03-13 UK Clarified license, streamlined UKFileWatcher stuff,
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Changed notifications to be useful and turned off by
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default some deprecated stuff.
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2003-12-21 UK Created.
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========================================================================== */
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// -----------------------------------------------------------------------------
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// Headers:
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// -----------------------------------------------------------------------------
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#import <Foundation/Foundation.h>
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#include <sys/types.h>
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#include <sys/event.h>
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#import "UKFileWatcher.h"
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// -----------------------------------------------------------------------------
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// Constants:
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// -----------------------------------------------------------------------------
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// Backwards compatibility constants. Don't rely on code commented out with these constants, because it may be deleted in a future version.
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#ifndef UKKQUEUE_BACKWARDS_COMPATIBLE
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#define UKKQUEUE_BACKWARDS_COMPATIBLE 0 // 1 to send old-style kqueue:receivedNotification:forFile: messages to objects that accept them.
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#endif
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#ifndef UKKQUEUE_SEND_STUPID_NOTIFICATIONS
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#define UKKQUEUE_SEND_STUPID_NOTIFICATIONS 0 // 1 to send old-style notifications that have the path as the object and no userInfo dictionary.
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#endif
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#ifndef UKKQUEUE_OLD_SINGLETON_ACCESSOR_NAME
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#define UKKQUEUE_OLD_SINGLETON_ACCESSOR_NAME 0 // 1 to allow use of sharedQueue instead of sharedFileWatcher.
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#endif
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#ifndef UKKQUEUE_OLD_NOTIFICATION_NAMES
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#define UKKQUEUE_OLD_NOTIFICATION_NAMES 0 // 1 to allow use of old KQueue-style notification names instead of the new more generic ones in UKFileWatcher.
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#endif
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// Flags for notifyingAbout:
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#define UKKQueueNotifyAboutRename NOTE_RENAME // Item was renamed.
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#define UKKQueueNotifyAboutWrite NOTE_WRITE // Item contents changed (also folder contents changed).
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#define UKKQueueNotifyAboutDelete NOTE_DELETE // item was removed.
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#define UKKQueueNotifyAboutAttributeChange NOTE_ATTRIB // Item attributes changed.
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#define UKKQueueNotifyAboutSizeIncrease NOTE_EXTEND // Item size increased.
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#define UKKQueueNotifyAboutLinkCountChanged NOTE_LINK // Item's link count changed.
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#define UKKQueueNotifyAboutAccessRevocation NOTE_REVOKE // Access to item was revoked.
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// Notifications this sends:
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// (see UKFileWatcher)
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// Old names: *deprecated*
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#if UKKQUEUE_OLD_NOTIFICATION_NAMES
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#define UKKQueueFileRenamedNotification UKFileWatcherRenameNotification
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#define UKKQueueFileWrittenToNotification UKFileWatcherWriteNotification
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#define UKKQueueFileDeletedNotification UKFileWatcherDeleteNotification
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#define UKKQueueFileAttributesChangedNotification UKFileWatcherAttributeChangeNotification
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#define UKKQueueFileSizeIncreasedNotification UKFileWatcherSizeIncreaseNotification
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#define UKKQueueFileLinkCountChangedNotification UKFileWatcherLinkCountChangeNotification
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#define UKKQueueFileAccessRevocationNotification UKFileWatcherAccessRevocationNotification
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#endif
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// -----------------------------------------------------------------------------
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// UKKQueue:
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// -----------------------------------------------------------------------------
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@interface UKKQueue : NSObject <UKFileWatcher>
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{
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int queueFD; // The actual queue ID (Unix file descriptor).
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NSMutableArray* watchedPaths; // List of NSStrings containing the paths we're watching.
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NSMutableArray* watchedFDs; // List of NSNumbers containing the file descriptors we're watching.
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id delegate; // Gets messages about changes instead of notification center, if specified.
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id delegateProxy; // Proxy object to which we send messages so they reach delegate on the main thread.
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BOOL alwaysNotify; // Send notifications even if we have a delegate? Defaults to NO.
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BOOL keepThreadRunning; // Termination criterion of our thread.
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}
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+(id) sharedFileWatcher; // Returns a singleton, a shared kqueue object Handy if you're subscribing to the notifications. Use this, or just create separate objects using alloc/init. Whatever floats your boat.
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-(int) queueFD; // I know you unix geeks want this...
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// High-level file watching: (use UKFileWatcher protocol methods instead, where possible!)
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-(void) addPathToQueue: (NSString*)path;
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-(void) addPathToQueue: (NSString*)path notifyingAbout: (u_int)fflags;
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-(void) removePathFromQueue: (NSString*)path;
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-(id) delegate;
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-(void) setDelegate: (id)newDelegate;
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-(BOOL) alwaysNotify;
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-(void) setAlwaysNotify: (BOOL)n;
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#if UKKQUEUE_OLD_SINGLETON_ACCESSOR_NAME
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+(UKKQueue*) sharedQueue;
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#endif
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// private:
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-(void) watcherThread: (id)sender;
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-(void) postNotification: (NSString*)nm forFile: (NSString*)fp; // Message-posting bottleneck.
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@end
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// -----------------------------------------------------------------------------
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// Methods delegates need to provide:
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// * DEPRECATED * use UKFileWatcher delegate methods instead!
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// -----------------------------------------------------------------------------
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@interface NSObject (UKKQueueDelegate)
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-(void) kqueue: (UKKQueue*)kq receivedNotification: (NSString*)nm forFile: (NSString*)fpath;
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@end
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