Github user agrieve commented on a diff in the pull request:
https://github.com/apache/cordova-ios/pull/126#discussion_r23303870
--- Diff: bin/lib/check_reqs.js ---
@@ -0,0 +1,94 @@
+/*
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied. See the License for the
+ specific language governing permissions and limitations
+ under the License.
+*/
+
+/* jshint node:true, bitwise:true, undef:true, trailing:true,
quotmark:true,
+ indent:4, unused:vars, latedef:nofunc,
+ sub:true, laxcomma:true, laxbreak:true
+*/
+
+var Q = require('Q'),
+ os = require('os'),
+ shell = require('shelljs'),
+ versions = require('./versions');
+
+var XCODEBUILD_MIN_VERSION = 4.6;
+
+var IOS_SIM_MIN_VERSION = 3.0;
+var IOS_SIM_NOT_FOUND_MESSAGE = 'ios-sim was not found. Please download,
build and install version ' + IOS_SIM_MIN_VERSION +
+ ' or greater from https://github.com/phonegap/ios-sim into your path.'
+
+ ' Or \'npm install -g ios-sim\' using node.js: http://nodejs.org';
+
+var IOS_DEPLOY_MIN_VERSION = 1.2;
+var IOS_DEPLOY_NOT_FOUND_MESSAGE = 'ios-deploy was not found. Please
download, build and install version ' + IOS_DEPLOY_MIN_VERSION +
+ ' or greater from https://github.com/phonegap/ios-deploy into your
path.' +
+ ' Or \'npm install -g ios-deploy\' using node.js: http://nodejs.org';
+
+/**
+ * Checks if xcode util is available
+ * @return {Promise} Returns a promise either resolved with xcode version
or rejected
+ */
+module.exports.run = module.exports.check_xcodebuild = function () {
+ return checkTool('xcodebuild', XCODEBUILD_MIN_VERSION);
+};
+
+/**
+ * Checks if ios-deploy util is available
+ * @return {Promise} Returns a promise either resolved with ios-deploy
version or rejected
+ */
+module.exports.check_ios_deploy = function () {
+ return checkTool('ios-deploy', IOS_DEPLOY_MIN_VERSION,
IOS_DEPLOY_NOT_FOUND_MESSAGE);
+};
+
+/**
+ * Checks if ios-sim util is available
+ * @return {Promise} Returns a promise either resolved with ios-sim
version or rejected
+ */
+module.exports.check_ios_sim = function () {
+ return checkTool('ios-sim', IOS_SIM_MIN_VERSION,
IOS_SIM_NOT_FOUND_MESSAGE);
+};
+
+module.exports.help = function () {
+ console.log('Usage: check_reqs or node check_reqs');
+};
+
+/**
+ * Checks if specific tool is available.
+ * @param {String} tool Tool name to check. Known tools are
'xcodebuild', 'ios-sim' and 'ios-deploy'
+ * @param {Number} minVersion Min allowed tool version.
+ * @param {String} optMessage Message that will be used to reject promise.
+ * @return {Promise} Returns a promise either resolved with tool
version or rejected
+ */
+function checkTool (tool, minVersion, optMessage) {
+ if (os.platform() !== 'darwin'){
+ // Build iOS apps available for OSX platform only, so we reject on
others platforms
+ return Q.reject('Cordova tooling for iOS requires Apple OS X');
+ }
+ // Check whether tool command is available at all
+ var tool_command = shell.which(tool);
+ if (!tool_command) {
+ return Q.reject(optMessage || (tool + 'command is unavailable.'));
+ }
+ // check if tool version is greater than specified one
+ return versions.get_tool_version(tool).then(function (version) {
+ return minVersion <= parseFloat(version) ?
--- End diff --
I don't think apple restricts to two-number versions (e.g. Xcode 5.1.1 was
a thing). Maybe best approach (rather than checking in all of semver module),
is to add a helper to versions.js for comparing versions via splitting on '.'
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