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#include <efsw/Debug.hpp>
#include <efsw/FileSystem.hpp>
#include <efsw/FileWatcherFSEvents.hpp>
#include <efsw/Lock.hpp>
#include <efsw/String.hpp>
#include <efsw/System.hpp>
#if EFSW_PLATFORM == EFSW_PLATFORM_FSEVENTS
#include <sys/utsname.h>
namespace efsw {
int getOSXReleaseNumber() {
static int osxR = -1;
if ( -1 == osxR ) {
struct utsname os;
if ( -1 != uname( &os ) ) {
std::string release( os.release );
size_t pos = release.find_first_of( '.' );
if ( pos != std::string::npos ) {
release = release.substr( 0, pos );
}
int rel = 0;
if ( String::fromString<int>( rel, release ) ) {
osxR = rel;
}
}
}
return osxR;
}
bool FileWatcherFSEvents::isGranular() {
return getOSXReleaseNumber() >= 11;
}
void FileWatcherFSEvents::FSEventCallback( ConstFSEventStreamRef /*streamRef*/, void* userData,
size_t numEvents, void* eventPaths,
const FSEventStreamEventFlags eventFlags[],
const FSEventStreamEventId eventIds[] ) {
WatcherFSEvents* watcher = static_cast<WatcherFSEvents*>( userData );
std::vector<FSEvent> events;
events.reserve( numEvents );
for ( size_t i = 0; i < numEvents; i++ ) {
events.push_back( FSEvent( std::string( ( (char**)eventPaths )[i] ), (long)eventFlags[i],
(Uint64)eventIds[i] ) );
}
watcher->handleActions( events );
watcher->process();
efDEBUG( "\n" );
}
FileWatcherFSEvents::FileWatcherFSEvents( FileWatcher* parent ) :
FileWatcherImpl( parent ), mRunLoopRef( NULL ), mLastWatchID( 0 ), mThread( NULL ) {
mInitOK = true;
watch();
}
FileWatcherFSEvents::~FileWatcherFSEvents() {
mInitOK = false;
if ( mRunLoopRef.load() )
CFRunLoopStop( mRunLoopRef.load() );
efSAFE_DELETE( mThread );
WatchMap::iterator iter = mWatches.begin();
for ( ; iter != mWatches.end(); ++iter ) {
WatcherFSEvents* watch = iter->second;
efSAFE_DELETE( watch );
}
mWatches.clear();
}
WatchID FileWatcherFSEvents::addWatch( const std::string& directory, FileWatchListener* watcher,
bool recursive ) {
/// Wait to the RunLoopRef to be ready
while ( NULL == mRunLoopRef.load() ) {
System::sleep( 1 );
}
std::string dir( directory );
FileInfo fi( dir );
if ( !fi.isDirectory() ) {
return Errors::Log::createLastError( Errors::FileNotFound, dir );
} else if ( !fi.isReadable() ) {
return Errors::Log::createLastError( Errors::FileNotReadable, dir );
}
FileSystem::dirAddSlashAtEnd( dir );
if ( pathInWatches( dir ) ) {
return Errors::Log::createLastError( Errors::FileRepeated, directory );
}
/// Check if the directory is a symbolic link
std::string curPath;
std::string link( FileSystem::getLinkRealPath( dir, curPath ) );
if ( "" != link ) {
/// If it's a symlink check if the realpath exists as a watcher, or
/// if the path is outside the current dir
if ( pathInWatches( link ) ) {
return Errors::Log::createLastError( Errors::FileRepeated, directory );
} else if ( !linkAllowed( curPath, link ) ) {
return Errors::Log::createLastError( Errors::FileOutOfScope, dir );
} else {
dir = link;
}
}
mLastWatchID++;
WatcherFSEvents* pWatch = new WatcherFSEvents();
pWatch->Listener = watcher;
pWatch->ID = mLastWatchID;
pWatch->Directory = dir;
pWatch->Recursive = recursive;
pWatch->FWatcher = this;
pWatch->init();
Lock lock( mWatchesLock );
mWatches.insert( std::make_pair( mLastWatchID, pWatch ) );
return pWatch->ID;
}
void FileWatcherFSEvents::removeWatch( const std::string& directory ) {
Lock lock( mWatchesLock );
WatchMap::iterator iter = mWatches.begin();
for ( ; iter != mWatches.end(); ++iter ) {
if ( directory == iter->second->Directory ) {
removeWatch( iter->second->ID );
return;
}
}
}
void FileWatcherFSEvents::removeWatch( WatchID watchid ) {
Lock lock( mWatchesLock );
WatchMap::iterator iter = mWatches.find( watchid );
if ( iter == mWatches.end() )
return;
WatcherFSEvents* watch = iter->second;
mWatches.erase( iter );
efDEBUG( "Removed watch %s\n", watch->Directory.c_str() );
efSAFE_DELETE( watch );
}
void FileWatcherFSEvents::watch() {
if ( NULL == mThread ) {
mThread = new Thread( &FileWatcherFSEvents::run, this );
mThread->launch();
}
}
void FileWatcherFSEvents::run() {
mRunLoopRef = CFRunLoopGetCurrent();
while ( mInitOK ) {
mNeedInitMutex.lock();
if ( !mNeedInit.empty() ) {
for ( std::vector<WatcherFSEvents*>::iterator it = mNeedInit.begin();
it != mNeedInit.end(); ++it ) {
( *it )->initAsync();
}
mNeedInit.clear();
}
mNeedInitMutex.unlock();
if ( mWatches.empty() ) {
System::sleep( 100 );
} else {
CFRunLoopRunInMode( kCFRunLoopDefaultMode, 0.5, kCFRunLoopRunTimedOut );
}
}
mRunLoopRef = NULL;
}
void FileWatcherFSEvents::handleAction( Watcher* /*watch*/, const std::string& /*filename*/,
unsigned long /*action*/, std::string /*oldFilename*/ ) {
/// Not used
}
std::list<std::string> FileWatcherFSEvents::directories() {
std::list<std::string> dirs;
Lock lock( mWatchesLock );
for ( WatchMap::iterator it = mWatches.begin(); it != mWatches.end(); ++it ) {
dirs.push_back( std::string( it->second->Directory ) );
}
return dirs;
}
bool FileWatcherFSEvents::pathInWatches( const std::string& path ) {
for ( WatchMap::iterator it = mWatches.begin(); it != mWatches.end(); ++it ) {
if ( it->second->Directory == path ) {
return true;
}
}
return false;
}
} // namespace efsw
#endif
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