Rakefile to build xcode projects in nested directory structure. #xcode

rakefile.rb

###########################################################################
# XCode Tasks
###########################################################################
XCODE_PROJECTS_CACHE = 'xcode_projects_cache.yml'

def xcode_projects
  projects = []

  if File.exist?(XCODE_PROJECTS_CACHE)

    File.open( XCODE_PROJECTS_CACHE ) do |yml_in|
      projects = YAML.load( yml_in )
    end

  else
    puts "Dynamically generating xcode tasks and caching..."

    fl = FileList.new("**/*.xcodeproj")
    # fl.exclude(Regexp.new(exclude, true)) unless exclude.nil?

    fl.each do |xcodeproj|
      project = { :xcodeproj => xcodeproj }

      dir, base = File.split(xcodeproj)

      FileUtils.cd(dir, :verbose => false) do
        out = %x{ xcodebuild -list }

        # targets
        targets = []
        out.scan(/.*Targets:\s+(.*)Build Configurations:.*/m)        
        $1.each_line do |l|
          l = l.strip.sub(' (Active)', '')
          targets << l unless l.nil? or l.empty?
        end
        project[:targets] = targets

        # configurations
        configurations = []
        out.scan(/.*Build Configurations:\s+(.*)If no build configuration.*/m)
        $1.each_line do |l|
          l = l.strip.sub(' (Active)', '')
          configurations << l unless l.nil? or l.empty?
        end        
        project[:configurations] = configurations      
      end

      projects << project    
    end  
    
    # cache projects so we don't have to do this every time
    File.open( XCODE_PROJECTS_CACHE, 'w' ) do |out|
      YAML.dump( projects, out )
    end
    
  end
  
  projects
end

namespace :xcode do
 projects = xcode_projects
 
 desc "clean the XCode project cache so it will be recreated next run"
 task :clearcache do |t|
  if File.exist?(XCODE_PROJECTS_CACHE)
    File.delete(XCODE_PROJECTS_CACHE) rescue nil
  end
 end
 
 # removed install
 %w{build clean}.each do |action|
   namespace "#{action}" do

     projects.each do |project|
       xcodeproj = project[:xcodeproj]
       targets = project[:targets]
       configs = project[:configurations]
       
       targets.each do |target|
         desc "#{action} #{target}"
         task "#{target}" do |t|
           FileUtils.cd(File.dirname(xcodeproj)) do
             cmd = "xcodebuild -target '#{target}' #{action} OBJROOT=build/ SYMROOT=build/ DSTROOT=/"
             
             # need to handle result from sh because the default behavior is to 'fail'
             # if the command returns a failure error code (i.e. not 0)
             sh(cmd) do |ok, res|
                 unless ok
                     puts "Failed to execute '#{cmd}'"
                     puts "ERRORLEVEL=#{res.exitstatus}"
                 end
             end             
           end
         end

         # alias the task above using a massaged name
         massaged_target = target.downcase.gsub(/[\s*|\-]/, '_')
         task "#{massaged_target}" => "xcode:#{action}:#{target}"

         namespace "#{target}" do
           configs.each do |config|
             desc "#{action} #{target} #{config}"
             task "#{config}" do |t|
               FileUtils.cd(File.dirname(xcodeproj)) do
                 cmd = "xcodebuild -target '#{target}' -configuration '#{config}' #{action} SYMROOT=build/ OBJROOT=build/ DSTROOT=/"
             
                 # need to handle result from sh because the default behavior is to 'fail'
                 # if the command returns a failure error code (i.e. not 0)
                 sh(cmd) do |ok, res|
                     unless ok
                         puts "Failed to execute '#{cmd}'"
                         puts "ERRORLEVEL=#{res.exitstatus}"
                     end
                 end             
               end
             end
           end
         end

         # namespace+task aliases of the above using massaged names
         namespace "#{massaged_target}" do
           configs.each { |conf| task "#{conf.downcase.gsub(/[\s*|\-]/, '_')}" => "xcode:#{action}:#{target}:#{conf}" }
         end

       end
     end

   end
 end
 
end