licenses.rb

#!/usr/bin/ruby

files = Dir["**/*.h"] + Dir["**/*.cc"] + Dir["**/*.hh"]

lic = {}

files.each do |fn|
  # puts "fn: #{fn.inspect}"
  lines = IO.readlines(fn)
  if lines.empty?
    # puts "no lines"
    next
  end
  lines.shift if lines[0] =~ /-\*- mode: */i
  cpp_comments = []
  while lines[0] && lines[0] =~ %r|\A//|
    l = lines.shift
    l.force_encoding(Encoding::ASCII_8BIT)
    l = l.sub(%r|Copyright \(c\) [0-9]{4,4}|, "Copyright (c) xxxx")
    # l = l.sub(%r|Copyright \(c\) 20[0-9][0-9]|, "Copyright (c) xxxx")
    cpp_comments << l
    break if l == "// ---\n"
  end
  unless cpp_comments.empty?
    (lic[cpp_comments] ||= []) << fn
    next
  end
  if lines[0] && lines[0] =~ %r|/\*|
    c_comments = []
    while true
      l = lines.shift
      l.force_encoding(Encoding::ASCII_8BIT)
      l = l.sub(%r|Copyright \(c\) [0-9]{4}|, "Copyright (c) xxxx")
      c_comments << l
      break if l =~ /\s*\* -+\n/
      break if l =~ %r|\*/|
    end
    (lic[c_comments] ||= []) << fn
    next
  end
  (lic[["unknown"]] ||= []) << fn
end

lic.to_a.sort.each do |lic, files|
  puts "files: #{files.join(" ")}, license:"
  print lic.join("")
  puts
  puts
end