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160 lines (140 loc) · 3.88 KB
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/*
* DotPHP - Require PHP files under Node.js with Uniter
* Copyright (c) Dan Phillimore (asmblah)
* https://github.com/uniter/dotphp/
*
* Released under the MIT license
* https://github.com/uniter/dotphp/raw/master/MIT-LICENSE.txt
*/
'use strict';
var _ = require('microdash'),
path = require('path'),
Promise = require('lie');
/**
* Abstraction layer around Node's FS module for PHP programs to use
*
* @param {fs} fs
* @param {StreamFactory} streamFactory
* @param {Process} process
* @constructor
*/
function FileSystem(fs, streamFactory, process) {
/**
* @type {fs}
*/
this.fs = fs;
/**
* @type {Process}
*/
this.process = process;
/**
* @type {StreamFactory}
*/
this.streamFactory = streamFactory;
}
_.extend(FileSystem.prototype, {
/**
* Determines whether the specified directory exists.
*
* @returns {boolean}
*/
isDirectory: function (filePath) {
var fileSystem = this,
realPath = fileSystem.realPath(filePath);
try {
return fileSystem.fs.statSync(realPath).isDirectory();
} catch (e) {
return false;
}
},
/**
* Determines whether the specified file exists.
*
* @param {string} filePath
* @returns {boolean}
*/
isFile: function (filePath) {
var fileSystem = this,
realPath = fileSystem.realPath(filePath);
try {
return fileSystem.fs.statSync(realPath).isFile();
} catch (e) {
return false;
}
},
/**
* Opens a Stream for the specified file asynchronously.
*
* @param {string} filePath
* @returns {Promise} Resolves with a Stream for the file on success, rejects on failure
*/
open: function (filePath) {
var fileSystem = this,
realPath = fileSystem.realPath(filePath);
return new Promise(function (resolve, reject) {
fileSystem.fs.open(realPath, 'w+', function (error, fd) {
if (error) {
return reject(error);
}
resolve(fileSystem.streamFactory.create(realPath, fd));
});
});
},
/**
* Opens a Stream for the specified file synchronously
*
* @param {string} filePath
* @returns {Stream}
*/
openSync: function (filePath) {
var fileSystem = this,
realPath = fileSystem.realPath(filePath),
fd = fileSystem.fs.openSync(realPath, 'w+');
return fileSystem.streamFactory.create(realPath, fd);
},
/**
* Converts the specified module path to a full one,
* normalizing any parent- or current-directory symbols
*
* @param {string} filePath
* @returns {string|null}
*/
realPath: function (filePath) {
var fileSystem = this,
relativePath = path.resolve(fileSystem.process.cwd(), filePath);
try {
return fileSystem.fs.realpathSync(relativePath);
} catch (error) {
return null;
}
},
/**
* Deletes a file asynchronously
*
* @param {string} filePath
* @returns {Promise} Resolves on success, rejects on failure
*/
unlink: function (filePath) {
var fileSystem = this,
realPath = fileSystem.realPath(filePath);
return new Promise(function (resolve, reject) {
fileSystem.fs.unlink(realPath, function (error) {
if (error) {
return reject(error);
}
resolve();
});
});
},
/**
* Deletes a file synchronously
*
* @param {string} filePath
*/
unlinkSync: function (filePath) {
var fileSystem = this,
realPath = fileSystem.realPath(filePath);
fileSystem.fs.unlinkSync(realPath);
}
});
module.exports = FileSystem;