var NODE_TYPE_FILE = require('./constants.js').NODE_TYPE_FILE; var NODE_TYPE_DIRECTORY = require('./constants.js').NODE_TYPE_DIRECTORY; var NODE_TYPE_SYMBOLIC_LINK = require('./constants.js').NODE_TYPE_SYMBOLIC_LINK; var S_IFREG = require('./constants.js').S_IFREG; var S_IFDIR = require('./constants.js').S_IFDIR; var S_IFLNK = require('./constants.js').S_IFLNK; var DEFAULT_FILE_PERMISSIONS = require('./constants.js').DEFAULT_FILE_PERMISSIONS; var DEFAULT_DIR_PERMISSIONS = require('./constants.js').DEFAULT_DIR_PERMISSIONS; function getMode(type, mode) { switch(type) { case NODE_TYPE_DIRECTORY: return (mode || DEFAULT_DIR_PERMISSIONS) | S_IFDIR; case NODE_TYPE_SYMBOLIC_LINK: return (mode || DEFAULT_FILE_PERMISSIONS) | S_IFLNK; /* jshint -W086 */ case NODE_TYPE_FILE: // falls through default: return (mode || DEFAULT_FILE_PERMISSIONS) | S_IFREG; } } function Node(options) { var now = Date.now(); this.id = options.id; this.type = options.type || NODE_TYPE_FILE; // node type (file, directory, etc) this.size = options.size || 0; // size (bytes for files, entries for directories) this.atime = options.atime || now; // access time (will mirror ctime after creation) this.ctime = options.ctime || now; // creation/change time this.mtime = options.mtime || now; // modified time this.flags = options.flags || []; // file flags this.xattrs = options.xattrs || {}; // extended attributes this.nlinks = options.nlinks || 0; // links count this.data = options.data; // id for data object this.version = options.version || 1; // permissions and flags this.mode = options.mode || (getMode(this.type)); this.uid = options.uid || 0x0; // owner name this.gid = options.gid || 0x0; // group name } // Make sure the options object has an id on property, // either from caller or one we generate using supplied guid fn. function ensureID(options, prop, callback) { if(options[prop]) { callback(null); } else { options.guid(function(err, id) { options[prop] = id; callback(err); }); } } Node.create = function(options, callback) { // We expect both options.id and options.data to be provided/generated. ensureID(options, 'id', function(err) { if(err) { callback(err); return; } ensureID(options, 'data', function(err) { if(err) { callback(err); return; } callback(null, new Node(options)); }); }); }; // Update the node's mode (permissions), taking file type bits into account. Node.setMode = function(mode, node) { node.mode = getMode(node.type, mode); }; module.exports = Node;