stryker/src/utils/TempFolder.js

The extendable JavaScript mutation testing framework

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var util_1 = require("@stryker-mutator/util");
var path = require("path");
var mkdirp = require("mkdirp");
var log4js_1 = require("log4js");
var fileUtils_1 = require("./fileUtils");
var TempFolder = /** @class */ (function () {
    function TempFolder() {
        this.log = log4js_1.getLogger(TempFolder.name);
    }
    TempFolder.prototype.initialize = function (tempDirName) {
        if (tempDirName === void 0) { tempDirName = '.stryker-tmp'; }
        this.baseTempFolder = path.join(process.cwd(), tempDirName);
        this.tempFolder = path.join(this.baseTempFolder, this.random().toString());
        mkdirp.sync(this.baseTempFolder);
        mkdirp.sync(this.tempFolder);
    };
    /**
     * Creates a new random folder with the specified prefix.
     * @param prefix The prefix.
     * @returns The path to the folder.
     */
    TempFolder.prototype.createRandomFolder = function (prefix) {
        if (!this.baseTempFolder) {
            throw new Error('initialize() was not called!');
        }
        var dir = this.baseTempFolder + path.sep + prefix + this.random();
        mkdirp.sync(dir);
        return dir;
    };
    /**
     * Copies a file.
     * @param fromFilename The path to the existing file.
     * @param toFilename The path to copy the file to.
     * @param instrumenter An optional additional instrumenter to stream the file through
     * @returns A promise to eventually copy the file.
     */
    TempFolder.prototype.copyFile = function (fromFilename, toFilename, instrumenter) {
        return new Promise(function (resolve, reject) {
            var readStream = util_1.fsAsPromised.createReadStream(fromFilename, { encoding: 'utf8' });
            var writeStream = util_1.fsAsPromised.createWriteStream(toFilename);
            readStream.on('error', reject);
            writeStream.on('error', reject);
            if (instrumenter) {
                readStream = readStream.pipe(instrumenter);
            }
            readStream.pipe(writeStream);
            readStream.on('end', function () { return resolve(); });
        });
    };
    /**
     * Deletes the Stryker-temp folder
     */
    TempFolder.prototype.clean = function () {
        var _this = this;
        if (!this.baseTempFolder) {
            throw new Error('initialize() was not called!');
        }
        this.log.debug("Deleting stryker temp folder " + this.baseTempFolder);
        return fileUtils_1.deleteDir(this.baseTempFolder)
            .catch(function () { return _this.log.info("Failed to delete stryker temp folder " + _this.baseTempFolder); });
    };
    /**
     * Creates a random integer number.
     * @returns A random integer.
     */
    TempFolder.prototype.random = function () {
        return Math.ceil(Math.random() * 10000000);
    };
    TempFolder.instance = function () {
        if (!this._instance) {
            this._instance = new TempFolder();
        }
        return this._instance;
    };
    return TempFolder;
}());
exports.TempFolder = TempFolder;
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