101 lines
3.4 KiB
C++
101 lines
3.4 KiB
C++
// Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
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#if PLATFORM_MAC
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#include "MacFileSystemWatcher.h"
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#include "Engine/Platform/Apple/AppleUtils.h"
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#include "Engine/Platform/CriticalSection.h"
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#include "Engine/Platform/Thread.h"
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#include "Engine/Threading/ThreadSpawner.h"
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#include "Engine/Core/Collections/Array.h"
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#include "Engine/Core/Types/StringView.h"
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void DirectoryWatchCallback( ConstFSEventStreamRef StreamRef, void* FileWatcherPtr, size_t EventCount, void* EventPaths, const FSEventStreamEventFlags EventFlags[], const FSEventStreamEventId EventIDs[] )
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{
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MacFileSystemWatcher* macFileSystemWatcher = (MacFileSystemWatcher*)FileWatcherPtr;
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if (macFileSystemWatcher)
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{
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CFArrayRef EventPathArray = (CFArrayRef)EventPaths;
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for( size_t EventIndex = 0; EventIndex < EventCount; ++EventIndex )
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{
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const FSEventStreamEventFlags Flags = EventFlags[EventIndex];
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if( !(Flags & kFSEventStreamEventFlagItemIsFile) && !(Flags & kFSEventStreamEventFlagItemIsDir) )
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{
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// events about symlinks don't concern us
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continue;
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}
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auto action = FileSystemAction::Unknown;
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const bool added = ( Flags & kFSEventStreamEventFlagItemCreated );
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const bool renamed = ( Flags & kFSEventStreamEventFlagItemRenamed );
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const bool modified = ( Flags & kFSEventStreamEventFlagItemModified );
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const bool removed = ( Flags & kFSEventStreamEventFlagItemRemoved );
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if (added)
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{
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action = FileSystemAction::Create;
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}
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if (renamed || modified)
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{
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action = FileSystemAction::Delete;
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}
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if (removed)
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{
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action = FileSystemAction::Modify;
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}
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const String resolvedPath = AppleUtils::ToString((CFStringRef)CFArrayGetValueAtIndex(EventPathArray,EventIndex));
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macFileSystemWatcher->OnEvent(resolvedPath, action);
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}
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}
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}
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MacFileSystemWatcher::MacFileSystemWatcher(const String& directory, bool withSubDirs)
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: FileSystemWatcherBase(directory, withSubDirs)
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{
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CFStringRef FullPathMac = AppleUtils::ToString(StringView(directory));
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CFArrayRef PathsToWatch = CFArrayCreate(NULL, (const void**)&FullPathMac, 1, NULL);
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CFAbsoluteTime Latency = 0.2;
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FSEventStreamContext Context;
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Context.version = 0;
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Context.info = this;
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Context.retain = NULL;
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Context.release = NULL;
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Context.copyDescription = NULL;
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EventStream = FSEventStreamCreate( NULL,
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&DirectoryWatchCallback,
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&Context,
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PathsToWatch,
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kFSEventStreamEventIdSinceNow,
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Latency,
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kFSEventStreamCreateFlagUseCFTypes | kFSEventStreamCreateFlagNoDefer | kFSEventStreamCreateFlagFileEvents
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);
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CFRelease(PathsToWatch);
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CFRelease(FullPathMac);
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FSEventStreamScheduleWithRunLoop( EventStream, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode );
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FSEventStreamStart( EventStream );
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IsRunning = true;
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}
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MacFileSystemWatcher::~MacFileSystemWatcher()
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{
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if (IsRunning)
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{
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FSEventStreamStop(EventStream);
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FSEventStreamUnscheduleFromRunLoop(EventStream, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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FSEventStreamInvalidate(EventStream);
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FSEventStreamRelease(EventStream);
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}
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}
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#endif
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