react-native/local-cli/runIOS/findMatchingSimulator.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.*
*/
'use strict';
/**
* Takes in a parsed simulator list and a desired name, and returns an object with the matching simulator.
*
* If the simulatorName argument is null, we'll go into default mode and return the currently booted simulator, or if
* none is booted, it will be the first in the list.
*
* @param Object simulators a parsed list from `xcrun simctl list --json devices` command
* @param String|null simulatorName the string with the name of desired simulator. If null, it will use the currently
* booted simulator, or if none are booted, the first in the list.
* @returns {Object} {udid, name, version}
*/
function findMatchingSimulator(simulators, simulatorName) {
if (!simulators.devices) {
return null;
}
const devices = simulators.devices;
var match;
for (let version in devices) {
// Making sure the version of the simulator is an iOS (Removes Apple Watch, etc)
if (version.indexOf('iOS') !== 0) {
continue;
}
for (let i in devices[version]) {
let simulator = devices[version][i];
// Skipping non-available simulator
if (simulator.availability !== '(available)') {
continue;
}
// If there is a booted simulator, we'll use that as instruments will not boot a second simulator
if (simulator.state === 'Booted') {
if (simulatorName !== null) {
console.warn("We couldn't boot your defined simulator due to an already booted simulator. We are limited to one simulator launched at a time.");
}
return {
udid: simulator.udid,
name: simulator.name,
version
};
}
if (simulator.name === simulatorName) {
return {
udid: simulator.udid,
name: simulator.name,
version
};
}
// Keeps track of the first available simulator for use if we can't find one above.
if (simulatorName === null && !match) {
match = {
udid: simulator.udid,
name: simulator.name,
version
};
}
}
}
if (match) {
return match;
}
return null;
}
module.exports = findMatchingSimulator;