126 lines
2.4 KiB
JavaScript
126 lines
2.4 KiB
JavaScript
'use strict';
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const util = require('util');
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const Item = require('./item');
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const bufferFrom = require('./buffer').from;
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const bufferAlloc = require('./buffer').alloc;
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const EMPTY = bufferAlloc(0);
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const constants = require('constants');
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/**
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* A file.
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* @constructor
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*/
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function File() {
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Item.call(this);
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/**
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* File content.
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* @type {Buffer}
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*/
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this._content = EMPTY;
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}
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util.inherits(File, Item);
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/**
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* Get the file contents.
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* @return {Buffer} File contents.
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*/
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File.prototype.getContent = function() {
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this.setATime(new Date());
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return this._content;
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};
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/**
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* Set the file contents.
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* @param {string|Buffer} content File contents.
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*/
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File.prototype.setContent = function(content) {
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if (typeof content === 'string') {
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content = bufferFrom(content);
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} else if (!Buffer.isBuffer(content)) {
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throw new Error('File content must be a string or buffer');
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}
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this._content = content;
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const now = Date.now();
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this.setCTime(new Date(now));
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this.setMTime(new Date(now));
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};
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/**
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* Get file stats.
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* @return {Object} Stats properties.
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*/
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File.prototype.getStats = function() {
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const size = this._content.length;
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const stats = Item.prototype.getStats.call(this);
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stats.mode = this.getMode() | constants.S_IFREG;
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stats.size = size;
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stats.blocks = Math.ceil(size / 512);
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return stats;
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};
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/**
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* Export the constructor.
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* @type {function()}
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*/
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exports = module.exports = File;
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/**
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* Standard input.
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* @constructor
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*/
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function StandardInput() {
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File.call(this);
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this.setMode(438); // 0666
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}
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util.inherits(StandardInput, File);
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exports.StandardInput = StandardInput;
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/**
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* Standard output.
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* @constructor
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*/
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function StandardOutput() {
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File.call(this);
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this.setMode(438); // 0666
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}
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util.inherits(StandardOutput, File);
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/**
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* Write the contents to stdout.
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* @param {string|Buffer} content File contents.
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*/
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StandardOutput.prototype.setContent = function(content) {
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if (process.stdout.isTTY) {
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process.stdout.write(content);
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}
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};
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exports.StandardOutput = StandardOutput;
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/**
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* Standard error.
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* @constructor
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*/
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function StandardError() {
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File.call(this);
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this.setMode(438); // 0666
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}
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util.inherits(StandardError, File);
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/**
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* Write the contents to stderr.
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* @param {string|Buffer} content File contents.
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*/
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StandardError.prototype.setContent = function(content) {
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if (process.stderr.isTTY) {
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process.stderr.write(content);
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}
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};
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exports.StandardError = StandardError;
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