/
theia-helper.js
384 lines (298 loc) · 7.63 KB
/
theia-helper.js
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'use strict';
require('./polyfills');
var Q = require('q');
var fs = require('fs');
var regex = require('./regex').getRegex();
var inquirer = require('inquirer');
var chalk = require('chalk');
var npm = require('npm');
var pckgJson;
var DEVCONFIG = {
'save-dev': true,
'save': false
};
var CONFIG = {
'save-dev': false,
'save': true
};
module.exports = function () {
return {
isJavaScript: isJavaScript,
userAction: userAction,
readAndExtract: readAndExtract,
isFile: isFile,
flatten: flatten,
readDir: readDir,
readPckgJson: readPckgJson,
getFiles: getFiles,
ignoredDirs: ignoredDirs
};
}();
//Takes a multi-dimensional array and returns
//a single array
function flatten(arr) {
return arr.reduce(function (prevArr, currArr) {
return prevArr.concat(currArr);
});
}
function readPckgJson(path) {
pckgJson = require(path);
}
//Returns an array of file names
function getFiles(results) {
return Q.all(results.map(isFile)).
then(function (fileResults) {
return results.filter(function (file, index) {
return fileResults[index];
});
});
}
function promptUser(pckgs) {
return prompt('save', pckgs).then(function (depAnswers) {
var selectedDeps = nonIntersect(depAnswers);
var remaining = pckgs.filter(selectedDeps);
if (remaining) {
return prompt('save-dev', remaining).then(function (
devDepAnswers) {
var allSelected = nonIntersect(depAnswers.concat(
devDepAnswers));
var remainingPckgs = pckgs.filter(allSelected);
return handleRemaining(remainingPckgs).then(function () {
installAll(depAnswers, devDepAnswers);
});
});
} else {
return installDeps(pckgs);
}
});
}
function nonIntersect(arr) {
return function (b) {
return arr.indexOf(b) === -1;
};
}
function handleRemaining(pckgs) {
if (pckgs.length > 0) {
return confirmSkip(pckgs);
} else {
return Q.when();
}
}
function installAll(depAnswers, devDepAnswers) {
return installDeps(depAnswers)
.then(function () {
return installDevDeps(devDepAnswers);
});
}
function makeUnique(arr) {
return arr.filter(function (elem, pos) {
return arr.indexOf(elem) === pos;
});
}
function prompt(option, pckgs) {
var type;
if (option === 'save-dev') {
type = 'devDependencies';
} else {
type = 'dependencies';
}
var defer = Q.defer();
var question = {
type: 'checkbox',
message: chalk.red('Found ' + pckgs.length + ' missing packages.') +
'\nSelect packages you want to install as ' + type + ':',
name: 'selected',
choices: pckgs.map(makeCheckboxObject)
};
inquirer.prompt(question, function (answer) {
defer.resolve(answer.selected);
});
return defer.promise;
}
function confirmSkip(pckgs) {
var defer = Q.defer();
var question = {
type: 'confirm',
name: 'skip',
message: 'Skipping the following packages?' + ' :\n ' + chalk.blue('* ' +
pckgs.join(
'\n * ')) + '\n Continue?',
default: false
};
inquirer.prompt(question, function (answer) {
if (answer.skip) {
return defer.resolve();
}
return defer.reject();
});
return defer.promise;
}
function confirmInstall(type, pckgs) {
var defer = Q.defer();
var questions = {
type: 'confirm',
name: 'toInstall',
message: 'npm install --' + type + ' :\n ' + chalk.blue('* ' +
pckgs.join(
'\n * ')) + '\n Continue?',
default: false
};
inquirer.prompt(questions,
function (answer) {
if (!answer.toInstall) {
defer.reject();
}
defer.resolve(pckgs);
});
return defer.promise;
}
function userAction(argv) {
return function (pckgs) {
if (pckgs.length === 0) {
console.log(chalk.green('No missing packages found!'));
return 0;
}
if (!argv.saveDev && !argv.save && argv.i) {
return 'Error';
}
//No flags
if (Object.keys(argv).length === 2) {
return displayMissing(pckgs);
}
if (argv.saveDev && argv.save) {
return promptUser(pckgs);
}
if (argv.saveDev && argv.i) {
return confirmInstall('save-dev', pckgs).then(installDevDeps);
}
if (argv.saveDev) {
return installDevDeps(pckgs);
}
if (argv.save && argv.i) {
return confirmInstall('save', pckgs).then(installDeps);
}
if (argv.save) {
return installDeps(pckgs);
}
};
}
function displayMissing(pckgs) {
console.log(chalk.red('Found ' + pckgs.length + ' missing packages:\n'));
pckgs.map(function (pckg) {
console.log(chalk.blue('* ' + pckg));
});
console.log('\n');
}
function installDevDeps(pckgs) {
return install(DEVCONFIG)(pckgs);
}
function installDeps(pckgs) {
return install(CONFIG)(pckgs);
}
//Installs all pckgs
function install(config) {
return function (pckgs) {
var defer = Q.defer();
npm.load(config, function (err) {
if (pckgs.length > 2) {
npm.config.set('save', false);
npm.config.set('save-dev', true);
}
if (err) {
defer.reject(err);
}
npm.commands.install(pckgs, function (errMsg) {
if (errMsg) {
defer.reject(err);
}
defer.resolve();
});
});
return defer.promise;
};
}
function makeCheckboxObject(pckg) {
return {
name: pckg,
checked: false
};
}
/*
* Reads all files in Jsfiles,
* extracts all packages in each file
* and returns a list of package names
*/
function readAndExtract(jsFiles) {
return Q.all(jsFiles.map(function (jsFile) {
//read Js files
return readFile(jsFile)
.then(extractPackages);
})).then(flatten)
.then(makeUnique);
}
//Promisified version of fs.readFile
function readFile(file) {
return Q.nfcall(fs.readFile, file, 'utf-8');
}
//Promisified version fs.readDir
function readDir(dir) {
return Q.nfcall(fs.readdir, dir);
}
function extractPackages(data) {
// //Store all matching packages
// if no matches, use empty array
var regexMatch = data.match(regex) || [];
var packages = regexMatch.map(
replaceWithName);
var uniqueDeps = isNotObjProp(pckgJson.dependencies || []);
var uniqueDevDeps = isNotObjProp(pckgJson.devDependencies || []);
//Only track packages that need to be installed
return packages.filter(uniqueDeps).filter(uniqueDevDeps).filter(
installablePckg);
}
//Replaces the regex with the name of the package.
function replaceWithName(file) {
return file.replace(regex, '$2');
}
//Returns true if pckg is a property of obj.
function isObjProp(obj, pckg) {
return obj.hasOwnProperty(pckg);
}
//Returns true if package is not a built in node package
//and therefore installable.
function installablePckg(pckg) {
var packages = ['assert', 'buffer', 'child_process', 'cluster',
'crypto', 'dgram', 'dns', 'domain', 'events', 'fs', 'http', 'https',
'net',
'os', 'path', 'punycode', 'querystring', 'readline', 'stream',
'string_decoder', 'tls', 'tty', 'url', 'util', 'vm', 'zlib', 'smalloc'
];
return packages.indexOf(pckg) === -1;
}
// Returns true if package is a directory that should be ignored
function ignoredDirs(dir) {
var dirs = ['.git', 'node_modules', 'bower_components'];
return dirs.indexOf(dir) === -1;
}
/*Returns a function
* that returns false if
* pckg is an object property of obj.
*/
function isNotObjProp(obj) {
return function (pckg) {
return !isObjProp(obj, pckg);
};
}
//Returns true if file has a js extension
function isJavaScript(file) {
return file.endsWith('.js');
}
function isFile(file) {
return Q.nfcall(fs.stat, file)
.then(function (stats, error) {
if (error) {
return error;
}
return stats.isFile();
});
}