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108 lines
3.2 KiB
108 lines
3.2 KiB
/* |
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** © 2014 by Philipp Dunkel <pip@pipobscure.com> |
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** Licensed under MIT License. |
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*/ |
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/* jshint node:true */ |
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'use strict'; |
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if (process.platform !== 'darwin') |
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throw new Error('Module \'fsevents\' is not compatible with platform \'' + process.platform + '\''); |
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var path = require('path'); |
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var binary = require('node-pre-gyp'); |
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var Native = require(binary.find(path.join(__dirname, 'package.json'))); |
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var EventEmitter = require('events').EventEmitter; |
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var fs = require('fs'); |
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var inherits = require('util').inherits; |
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function FSEvents(path, handler) { |
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EventEmitter.call(this); |
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Object.defineProperty(this, '_impl', { |
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value: new Native.FSEvents(String(path || ''), handler), |
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enumerable: false, |
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writable: false |
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}); |
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} |
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inherits(FSEvents, EventEmitter); |
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proxies(FSEvents, Native.FSEvents); |
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module.exports = watch; |
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module.exports.getInfo = getInfo; |
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module.exports.FSEvents = Native.FSEvents; |
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module.exports.Constants = Native.Constants; |
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var defer = global.setImmediate || process.nextTick; |
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function watch(path) { |
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var fse = new FSEvents(String(path || ''), handler); |
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EventEmitter.call(fse); |
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return fse; |
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function handler(path, flags, id) { |
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defer(function() { |
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fse.emit('fsevent', path, flags, id); |
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var info = getInfo(path, flags); |
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info.id = id; |
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if (info.event === 'moved') { |
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fs.stat(info.path, function(err, stat) { |
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info.event = (err || !stat) ? 'moved-out' : 'moved-in'; |
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fse.emit('change', path, info); |
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fse.emit(info.event, path, info); |
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}); |
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} else { |
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fse.emit('change', path, info); |
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fse.emit(info.event, path, info); |
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} |
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}); |
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} |
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} |
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function proxies(ctor, target) { |
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Object.keys(target.prototype).filter(function(key) { |
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return typeof target.prototype[key] === 'function'; |
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}).forEach(function(key) { |
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ctor.prototype[key] = function() { |
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this._impl[key].apply(this._impl, arguments); |
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return this; |
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} |
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}); |
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} |
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function getFileType(flags) { |
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if (Native.Constants.kFSEventStreamEventFlagItemIsFile & flags) return 'file'; |
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if (Native.Constants.kFSEventStreamEventFlagItemIsDir & flags) return 'directory'; |
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if (Native.Constants.kFSEventStreamEventFlagItemIsSymlink & flags) return 'symlink'; |
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} |
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function getEventType(flags) { |
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if (Native.Constants.kFSEventStreamEventFlagItemRemoved & flags) return 'deleted'; |
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if (Native.Constants.kFSEventStreamEventFlagItemRenamed & flags) return 'moved'; |
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if (Native.Constants.kFSEventStreamEventFlagItemCreated & flags) return 'created'; |
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if (Native.Constants.kFSEventStreamEventFlagItemModified & flags) return 'modified'; |
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if (Native.Constants.kFSEventStreamEventFlagRootChanged & flags) return 'root-changed'; |
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return 'unknown'; |
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} |
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function getFileChanges(flags) { |
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return { |
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inode: !! (Native.Constants.kFSEventStreamEventFlagItemInodeMetaMod & flags), |
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finder: !! (Native.Constants.kFSEventStreamEventFlagItemFinderInfoMod & flags), |
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access: !! (Native.Constants.kFSEventStreamEventFlagItemChangeOwner & flags), |
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xattrs: !! (Native.Constants.kFSEventStreamEventFlagItemXattrMod & flags) |
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}; |
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} |
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function getInfo(path, flags) { |
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return { |
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path: path, |
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event: getEventType(flags), |
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type: getFileType(flags), |
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changes: getFileChanges(flags), |
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flags: flags |
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}; |
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}
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