#!/usr/bin/python # Copyright (C) 2013, 2015, 2016 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 os import re import subprocess import sys import xml.dom.minidom def main(argv): tools_dir = os.path.dirname(__file__) public_v3_dir = os.path.abspath(os.path.join(tools_dir, '..', 'public', 'v3')) bundled_script = '' index_html = xml.dom.minidom.parse(os.path.join(public_v3_dir, 'index.html')) for template in index_html.getElementsByTagName('template'): if template.getAttribute('id') != 'unbundled-scripts': continue unbundled_scripts = template.getElementsByTagName('script') for script in unbundled_scripts: src = script.getAttribute('src') with open(os.path.join(public_v3_dir, src)) as script_file: script_content = script_file.read() script_content = re.sub(r'([\"\'])use strict\1;', '', script_content) script_content = re.sub(r'(?P\n\s*static\s+(?P\w+)Template\(\)\s*{[^`]*`)(?P[^`]*)(?P`;?\s*})', compress_template, script_content, re.MULTILINE) bundled_script += script_content jsmin = subprocess.Popen(['python', os.path.join(tools_dir, 'jsmin.py')], stdin=subprocess.PIPE, stdout=subprocess.PIPE) minified_script = jsmin.communicate(input=bundled_script)[0] new_size = float(len(minified_script)) old_size = float(len(bundled_script)) print '%d -> %d (%.1f%%)' % (old_size, new_size, new_size / old_size * 100) with open(os.path.join(public_v3_dir, 'bundled-scripts.js'), 'w') as bundled_file: bundled_file.write(minified_script) def compress_template(match): prefix = match.group('prefix') content = match.group('content') suffix = match.group('suffix') if match.group('type') == 'css': content = cssminify(content) else: content = re.sub(r'\s+', ' ', content) return prefix + content + suffix 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__": main(sys.argv)