Unmatched Braces / Preprocessor Finder

unmatched.rb

#!/usr/bin/ruby
# search for unmatched '{' / '}' pairs and '#ifndef' / '#endif' pairs
# assuming that any given file should have fully matched sets of both

Dir.glob("src/**/*\.[h,cpp]").each { |src|
   c = File.read(src)
  ob = c.count('{')
  cb = c.count('}')
  od = c.count('#ifndef')
  cd = c.count('#endif')
  
  puts "! #{src}" if ob != cb || od != cd
}