text: #!/usr/bin/env python
  
  # Copyright (C) 2013 Apple Inc. All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions
  # are met:
  # 1. Redistributions of source code must retain the above copyright
  #    notice, this list of conditions and the following disclaimer.
  # 2. Redistributions in binary form must reproduce the above copyright
  #    notice, this list of conditions and the following disclaimer in the
  #    documentation and/or other materials provided with the distribution.
  #
  # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  # THE POSSIBILITY OF SUCH DAMAGE.
  
  import re
  
  def cssminify(css):
      rules = (
          (r"\/\*.*?\*\/", ""),          # delete comments
          (r"\n", ""),                   # delete new lines
          (r"\s+", " "),                 # change multiple spaces to one space
          (r"\s?([;{},~>!])\s?", r"\1"), # delete space where it is not needed
          (r":\s", ":"),                 # delete spaces after colons, but not before. E.g. do not break selectors "a :focus", "b :matches(...)", "c :not(...)" where the leading space is significant
          (r"\s?([-+])(?:\s(?![0-9(])(?!var))", r"\1"), # delete whitespace around + and - when not followed by a number, paren, or var(). E.g. strip for selector "a + b" but not "calc(a + b)" which requires spaces.
          (r";}", "}")                   # change ';}' to '}' because the semicolon is not needed
      )
  
      css = css.replace("\r\n", "\n")
      for rule in rules:
          css = re.compile(rule[0], re.MULTILINE | re.UNICODE | re.DOTALL).sub(rule[1], css)
      return css
  
  if __name__ == "__main__":
      import sys
      if sys.version_info[0] >= 3:
          import io
          if sys.stdin.encoding != 'UTF-8':
              sys.stdin = io.TextIOWrapper(sys.stdin.buffer, encoding='UTF-8')
          if sys.stdout.encoding != 'UTF-8':
              sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='UTF-8')
      sys.stdout.write(cssminify(sys.stdin.read()))
  