| #!/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 and sys.stdin.encoding != 'UTF-8': |
| import io |
| sys.stdin = io.TextIOWrapper(sys.stdin.buffer, encoding='UTF-8') |
| sys.stdout.write(cssminify(sys.stdin.read())) |