Deletes old simulators that have unavailable runtimes

clean-old-sims.rb

#!/usr/bin/ruby

require 'fileutils'
require 'optparse'

options = {:verbose => false}
OptionParser.new do |opts|
  opts.banner = "Usage: clean-old-sims.rb [options]\nLists old devices, deletes if -d is specified"

  opts.on("-d", "--delete", "Delete old simulator devices") do |d|
    options[:delete] = d
  end
  opts.on("-v", "--verbose", "Enable more logging") do |v|
  	options[:verbose] = v
  end
end.parse!

def getValidRuntimes
	xcodes = %x{mdfind -onlyin / 'kMDItemCFBundleIdentifier = com.apple.dt.Xcode'}.split("\n")
	validRuntimes = []
	xcodes.each do |xcode|
		simctl = "env DEVELOPER_DIR=\"#{xcode}\" xcrun simctl"
		activeSims = %x{#{simctl} list runtimes}
		for line in activeSims.split("\n")
			m = /(com.apple.CoreSimulator.SimRuntime.iOS-\d+-\d+)/m.match(line)
			if m and not validRuntimes.include? m[1]
				validRuntimes << m[1]
			end
		end
	end
	return validRuntimes
end

def getDeviceInfo(devicePath, key)
	return %x{/usr/libexec/PlistBuddy -c "Print :#{key}" #{devicePath}/device.plist}.strip
end

validRuntimes = getValidRuntimes()

if options[:verbose]
	puts "Valid runtimes:"
	puts validRuntimes
end

# find all on-disk devices, compare against Xcode's list
for deviceFolder in Dir.glob(File.join(Dir.home, "/Library/Developer/CoreSimulator/Devices/*"))
	deviceID = File.basename(deviceFolder)
    if deviceID == 'device_set.plist'
        next
    end
	isValid = false
	name = getDeviceInfo(deviceFolder, 'name')
	runtime = getDeviceInfo(deviceFolder, 'runtime')
	if not validRuntimes.include? runtime
		if options[:delete]
			# FileUtils.remove_entry_secure(deviceFolder)
			%x{xcrun simctl delete #{deviceID}}
			if options[:verbose]
				puts "#{name} (#{runtime}, #{deviceID}) was deleted"
			end
		else
			puts "#{name} (#{runtime}, #{deviceID}) is missing runtime"
		end
	end
end