mirror of https://github.com/nextcloud/desktop
120 lines
3.9 KiB
C++
120 lines
3.9 KiB
C++
/*
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* Copyright (C) by Markus Goetz <markus@woboq.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "config.h"
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#include "folder.h"
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#include "folderwatcher.h"
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#include "folderwatcher_mac.h"
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#include <cerrno>
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#include <QDebug>
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#include <QStringList>
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namespace OCC {
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FolderWatcherPrivate::FolderWatcherPrivate(FolderWatcher *p, const QString& path)
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: _parent(p),
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_folder(path)
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{
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this->startWatching();
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}
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FolderWatcherPrivate::~FolderWatcherPrivate()
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{
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FSEventStreamStop(_stream);
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FSEventStreamInvalidate(_stream);
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FSEventStreamRelease(_stream);
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}
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static void callback(
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ConstFSEventStreamRef streamRef,
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void *clientCallBackInfo,
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size_t numEvents,
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void *eventPathsVoid,
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const FSEventStreamEventFlags eventFlags[],
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const FSEventStreamEventId eventIds[])
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{
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Q_UNUSED(streamRef)
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Q_UNUSED(eventFlags)
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Q_UNUSED(eventIds)
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const FSEventStreamEventFlags c_interestingFlags
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= kFSEventStreamEventFlagItemCreated // for new folder/file
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| kFSEventStreamEventFlagItemRemoved // for rm
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| kFSEventStreamEventFlagItemInodeMetaMod // for mtime change
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| kFSEventStreamEventFlagItemRenamed // also coming for moves to trash in finder
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| kFSEventStreamEventFlagItemModified; // for content change
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//We ignore other flags, e.g. for owner change, xattr change, Finder label change etc
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qDebug() << "FolderWatcherPrivate::callback by OS X";
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QStringList paths;
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CFArrayRef eventPaths = (CFArrayRef)eventPathsVoid;
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for (int i = 0; i < static_cast<int>(numEvents); ++i) {
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CFStringRef path = reinterpret_cast<CFStringRef>(CFArrayGetValueAtIndex(eventPaths, i));
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QString qstring;
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CFIndex pathLength = CFStringGetLength(path);
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qstring.resize(pathLength);
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CFStringGetCharacters(path, CFRangeMake(0, pathLength), reinterpret_cast<UniChar *>(qstring.data()));
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QString fn = qstring.normalized(QString::NormalizationForm_C);
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if (!(eventFlags[i] & c_interestingFlags)) {
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qDebug() << "Ignoring non-content changes for" << fn;
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continue;
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}
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paths.append(fn);
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}
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reinterpret_cast<FolderWatcherPrivate*>(clientCallBackInfo)->doNotifyParent(paths);
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}
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void FolderWatcherPrivate::startWatching()
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{
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qDebug() << "FolderWatcherPrivate::startWatching()" << _folder;
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CFStringRef folderCF = CFStringCreateWithCharacters(0, reinterpret_cast<const UniChar *>(_folder.unicode()),
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_folder.length());
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CFArrayRef pathsToWatch = CFStringCreateArrayBySeparatingStrings (NULL, folderCF, CFSTR(":"));
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FSEventStreamContext ctx = {0, this, NULL, NULL, NULL};
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// TODO: Add kFSEventStreamCreateFlagFileEvents ?
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_stream = FSEventStreamCreate(NULL,
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&callback,
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&ctx,
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pathsToWatch,
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kFSEventStreamEventIdSinceNow,
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0, // latency
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kFSEventStreamCreateFlagUseCFTypes|kFSEventStreamCreateFlagFileEvents|kFSEventStreamCreateFlagIgnoreSelf
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);
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CFRelease(pathsToWatch);
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FSEventStreamScheduleWithRunLoop(_stream, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
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FSEventStreamStart(_stream);
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}
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void FolderWatcherPrivate::doNotifyParent(const QStringList &paths) {
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_parent->changeDetected(paths);
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}
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} // ns mirall
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