show use of xcodeproj package

xcode_project_file_count.rb

#!/usr/bin/ruby

require 'xcodeproj'

projects = {
  'my app: variant a' => '/Users/dpich/Desktop/e80f427ed_a.xcodeproj',
  'my app: variant b' => '/Users/dpich/Desktop/e80f427ed_a_modified.xcodeproj',
}

puts "# File Counts"
projects.keys.each do |project|
  #title
  puts "## #{project}"

  #open
  project = Xcodeproj::Project.open(projects[project])
  
  #total
  puts "#{project.files.count} files in total"
  paths=project.files.map {|file|file.real_path.to_s} 
  #puts paths
  
  #empty/useless 
  f=project.files.select{ |file| file.name=="BUCK" && file.parent.files.count==1 && file.parent.groups.count==0}
  paths=f.map {|file|file.real_path.to_s} 
  puts "#{f.count} files in are in empty groups (e.g. only BUCK file, no sources/headers"
  #puts paths
  
  ##generated
  f=project.files.select{ |file| file.real_path.to_s.include? "buck-out/gen" }
  paths=f.map {|file|file.real_path.to_s} 
  puts "#{f.count} files are generated"
  #puts paths

  ##non sources
  f=project.files.select{ |file| !file.real_path.to_s.end_with?(".m", ".mm", ".swift", ".h", ".c", ".cpp", "BUCK") }
  paths=f.map {|file|file.real_path.to_s} 
  puts "#{f.count} files are no source files ('.m', '.mm', '.swift', '.h', '.c', '.cpp', 'BUCK')"
  puts paths
  
  #spacer for readability 
  puts "\n" 
end