Class: ZergXcode::Plugins::Retarget

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# File 'lib/zerg_xcode/plugins/retarget.rb', line 35

def retarget!(project, regexp, targets)
  # maps each file type to the type of the phase it's in
  file_type_phases = {}
  # maps each file to the phase it's in
  file_phases = {}
  # maps each PBXFileRef to the PBXBuildFile pointing to it
  build_files = {}
  
  # populate the maps
  project['targets'].each do |target|
    target.all_files.each do |file|
      build_file = file[:build_object]
      phase_type = file[:phase]['isa']
      build_files[file[:object]] = build_file
      file_type_phases[build_file.file_type] = phase_type
      file_phases[file[:object]] = phase_type
    end
  end
  
  # compute target sets
  in_targets = project['targets'].select do |target|
    targets.include? target['name']
  end
  out_targets = project['targets'] - in_targets
  
  # clean up targets outside the args
  out_targets.each do |target|
    target['buildPhases'].each do |phase|
      phase['files'].reject! { |build_file| regexp =~ build_file.filename }
    end
  end

  # build a list of the files in the project matching the pattern
  new_files = project.all_files.map { |file| file[:object] }.select do |file|
    regexp =~ file['path']
  end
  # build PBXBuildFile wrappers around files that don't have them
  new_files.each do |file|
    next if build_files[file]
    
    build_file = PBXBuildFile.new 'fileRef' => file
    build_files[file] = build_file
    file_phases[file] = file_type_phases[build_file.file_type] ||
        build_file.guessed_build_phase_type
  end
  
  # add files to targets matching the args
  in_targets.each do |target|
    already_in = Set.new(target.all_files.map { |file| file[:object] })      
    new_files.each do |file|
      file_ref = file[:object]
      next if already_in.include? file
      phase_type = file_phases[file]
      phase = target['buildPhases'].find { |p| p['isa'] ==  phase_type }
      unless phase
        phase = PBXBuildPhase.new_phase phase_type
        target['buildPhases'] << phase
      end
      phase['files'] << build_files[file]
    end
  end
end

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# File 'lib/zerg_xcode/plugins/retarget.rb', line 26

def run(args)
  path = args.shift
  pattern = args.shift
  regexp = Regexp.compile pattern
  project = ZergXcode.load path
  retarget! project, regexp, args
  project.save!
end