@codesandbox/sandpack-client
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104 lines • 3.73 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var node_fs_stats_1 = require("../core/node_fs_stats");
/**
* Generic inode definition that can easily be serialized.
*/
var Inode = /** @class */ (function () {
function Inode(id, size, mode, atime, mtime, ctime) {
this.id = id;
this.size = size;
this.mode = mode;
this.atime = atime;
this.mtime = mtime;
this.ctime = ctime;
}
/**
* Converts the buffer into an Inode.
*/
Inode.fromBuffer = function (buffer) {
if (buffer === undefined) {
throw new Error("NO");
}
return new Inode(buffer.toString('ascii', 30), buffer.readUInt32LE(0), buffer.readUInt16LE(4), buffer.readDoubleLE(6), buffer.readDoubleLE(14), buffer.readDoubleLE(22));
};
/**
* Handy function that converts the Inode to a Node Stats object.
*/
Inode.prototype.toStats = function () {
return new node_fs_stats_1.default((this.mode & 0xF000) === node_fs_stats_1.FileType.DIRECTORY ? node_fs_stats_1.FileType.DIRECTORY : node_fs_stats_1.FileType.FILE, this.size, this.mode, this.atime, this.mtime, this.ctime);
};
/**
* Get the size of this Inode, in bytes.
*/
Inode.prototype.getSize = function () {
// ASSUMPTION: ID is ASCII (1 byte per char).
return 30 + this.id.length;
};
/**
* Writes the inode into the start of the buffer.
*/
Inode.prototype.toBuffer = function (buff) {
if (buff === void 0) { buff = Buffer.alloc(this.getSize()); }
buff.writeUInt32LE(this.size, 0);
buff.writeUInt16LE(this.mode, 4);
buff.writeDoubleLE(this.atime, 6);
buff.writeDoubleLE(this.mtime, 14);
buff.writeDoubleLE(this.ctime, 22);
buff.write(this.id, 30, this.id.length, 'ascii');
return buff;
};
/**
* Updates the Inode using information from the stats object. Used by file
* systems at sync time, e.g.:
* - Program opens file and gets a File object.
* - Program mutates file. File object is responsible for maintaining
* metadata changes locally -- typically in a Stats object.
* - Program closes file. File object's metadata changes are synced with the
* file system.
* @return True if any changes have occurred.
*/
Inode.prototype.update = function (stats) {
var hasChanged = false;
if (this.size !== stats.size) {
this.size = stats.size;
hasChanged = true;
}
if (this.mode !== stats.mode) {
this.mode = stats.mode;
hasChanged = true;
}
var atimeMs = stats.atime.getTime();
if (this.atime !== atimeMs) {
this.atime = atimeMs;
hasChanged = true;
}
var mtimeMs = stats.mtime.getTime();
if (this.mtime !== mtimeMs) {
this.mtime = mtimeMs;
hasChanged = true;
}
var ctimeMs = stats.ctime.getTime();
if (this.ctime !== ctimeMs) {
this.ctime = ctimeMs;
hasChanged = true;
}
return hasChanged;
};
// XXX: Copied from Stats. Should reconcile these two into something more
// compact.
/**
* @return [Boolean] True if this item is a file.
*/
Inode.prototype.isFile = function () {
return (this.mode & 0xF000) === node_fs_stats_1.FileType.FILE;
};
/**
* @return [Boolean] True if this item is a directory.
*/
Inode.prototype.isDirectory = function () {
return (this.mode & 0xF000) === node_fs_stats_1.FileType.DIRECTORY;
};
return Inode;
}());
exports.default = Inode;