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css-html-js-minify.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""CSS-HTML-JS-Minify.
StandAlone Async single-file cross-platform no-dependencies
Unicode-ready Python3-ready Minifier for the Web.
"""
import gzip
import itertools
import logging as log
import os
import re
import sys
from argparse import ArgumentParser
from copy import copy
from ctypes import byref, cdll, create_string_buffer
from datetime import datetime
from doctest import testmod
from hashlib import sha1
from multiprocessing import cpu_count, Pool
from tempfile import gettempdir
from time import sleep
try:
from urllib import request
from subprocess import getoutput
from shutil import disk_usage
from io import StringIO # pure-Python StringIO supports unicode.
except ImportError:
request = getoutput = disk_usage = None
from StringIO import StringIO # lint:ok
try:
import resource # windows dont have resource
except ImportError:
resource = None
__version__ = "1.0.14"
__license__ = "GPLv3+ LGPLv3+"
__author__ = "Juan Carlos"
__email__ = "[email protected]"
__url__ = "https://github.com/juancarlospaco/css-html-js-minify"
__source__ = ("https://raw.githubusercontent.com/juancarlospaco/"
"css-html-js-minify/master/css-html-js-minify.py")
EXTENDED_NAMED_COLORS, start_time = { # 'Color Name String': (R, G, B)
'azure': (240, 255, 255), 'beige': (245, 245, 220),
'bisque': (255, 228, 196), 'blanchedalmond': (255, 235, 205),
'brown': (165, 42, 42), 'burlywood': (222, 184, 135),
'chartreuse': (127, 255, 0), 'chocolate': (210, 105, 30),
'coral': (255, 127, 80), 'cornsilk': (255, 248, 220),
'crimson': (220, 20, 60), 'cyan': (0, 255, 255),
'darkcyan': (0, 139, 139), 'darkgoldenrod': (184, 134, 11),
'darkgray': (169, 169, 169), 'darkgreen': (0, 100, 0),
'darkgrey': (169, 169, 169), 'darkkhaki': (189, 183, 107),
'darkmagenta': (139, 0, 139), 'darkolivegreen': (85, 107, 47),
'darkorange': (255, 140, 0), 'darkorchid': (153, 50, 204),
'darkred': (139, 0, 0), 'darksalmon': (233, 150, 122),
'darkseagreen': (143, 188, 143), 'darkslategray': (47, 79, 79),
'darkslategrey': (47, 79, 79), 'darkturquoise': (0, 206, 209),
'darkviolet': (148, 0, 211), 'deeppink': (255, 20, 147),
'dimgray': (105, 105, 105), 'dimgrey': (105, 105, 105),
'firebrick': (178, 34, 34), 'forestgreen': (34, 139, 34),
'gainsboro': (220, 220, 220), 'gold': (255, 215, 0),
'goldenrod': (218, 165, 32), 'gray': (128, 128, 128),
'green': (0, 128, 0), 'grey': (128, 128, 128),
'honeydew': (240, 255, 240), 'hotpink': (255, 105, 180),
'indianred': (205, 92, 92), 'indigo': (75, 0, 130),
'ivory': (255, 255, 240), 'khaki': (240, 230, 140),
'lavender': (230, 230, 250), 'lavenderblush': (255, 240, 245),
'lawngreen': (124, 252, 0), 'lemonchiffon': (255, 250, 205),
'lightcoral': (240, 128, 128), 'lightcyan': (224, 255, 255),
'lightgray': (211, 211, 211), 'lightgreen': (144, 238, 144),
'lightgrey': (211, 211, 211), 'lightpink': (255, 182, 193),
'lightsalmon': (255, 160, 122), 'lightseagreen': (32, 178, 170),
'lightslategray': (119, 136, 153), 'lightslategrey': (119, 136, 153),
'lime': (0, 255, 0), 'limegreen': (50, 205, 50), 'linen': (250, 240, 230),
'magenta': (255, 0, 255), 'maroon': (128, 0, 0),
'mediumorchid': (186, 85, 211), 'mediumpurple': (147, 112, 219),
'mediumseagreen': (60, 179, 113), 'mediumspringgreen': (0, 250, 154),
'mediumturquoise': (72, 209, 204), 'mediumvioletred': (199, 21, 133),
'mintcream': (245, 255, 250), 'mistyrose': (255, 228, 225),
'moccasin': (255, 228, 181), 'navy': (0, 0, 128),
'oldlace': (253, 245, 230), 'olive': (128, 128, 0),
'olivedrab': (107, 142, 35), 'orange': (255, 165, 0),
'orangered': (255, 69, 0), 'orchid': (218, 112, 214),
'palegoldenrod': (238, 232, 170), 'palegreen': (152, 251, 152),
'paleturquoise': (175, 238, 238), 'palevioletred': (219, 112, 147),
'papayawhip': (255, 239, 213), 'peachpuff': (255, 218, 185),
'peru': (205, 133, 63), 'pink': (255, 192, 203), 'plum': (221, 160, 221),
'purple': (128, 0, 128), 'rosybrown': (188, 143, 143),
'saddlebrown': (139, 69, 19), 'salmon': (250, 128, 114),
'sandybrown': (244, 164, 96), 'seagreen': (46, 139, 87),
'seashell': (255, 245, 238), 'sienna': (160, 82, 45),
'silver': (192, 192, 192), 'slategray': (112, 128, 144),
'slategrey': (112, 128, 144), 'snow': (255, 250, 250),
'springgreen': (0, 255, 127), 'teal': (0, 128, 128),
'thistle': (216, 191, 216), 'tomato': (255, 99, 71),
'turquoise': (64, 224, 208), 'violet': (238, 130, 238),
'wheat': (245, 222, 179)}, datetime.now()
CSS_PROPS_TEXT = '''alignment-adjust alignment-baseline animation
animation-delay animation-direction animation-duration
animation-iteration-count animation-name animation-play-state
animation-timing-function appearance azimuth backface-visibility background
background-attachment background-clip background-color background-image
background-origin background-position background-repeat background-size
baseline-shift bikeshedding bookmark-label bookmark-level bookmark-state
bookmark-target border border-bottom border-bottom-color
border-bottom-left-radius border-bottom-right-radius border-bottom-style
border-bottom-width border-collapse border-color border-image
border-image-outset border-image-repeat border-image-slice border-image-source
border-image-width border-left border-left-color border-left-style
border-left-width border-radius border-right border-right-color
border-right-style border-right-width border-spacing border-style border-top
border-top-color border-top-left-radius border-top-right-radius
border-top-style border-top-width border-width bottom box-decoration-break
box-shadow box-sizing caption-side clear clip color column-count column-fill
column-gap column-rule column-rule-color column-rule-style column-rule-width
column-span column-width columns content counter-increment counter-reset cue
cue-after cue-before cursor direction display drop-initial-after-adjust
drop-initial-after-align drop-initial-before-adjust drop-initial-before-align
drop-initial-size drop-initial-value elevation empty-cells fit fit-position
float font font-family font-size font-size-adjust font-stretch font-style
font-variant font-weight grid-columns grid-rows hanging-punctuation height
hyphenate-character hyphenate-resource hyphens icon image-orientation
image-resolution inline-box-align left letter-spacing line-height
line-stacking line-stacking-ruby line-stacking-shift line-stacking-strategy
linear-gradient list-style list-style-image list-style-position
list-style-type margin margin-bottom margin-left margin-right margin-top
marquee-direction marquee-loop marquee-speed marquee-style max-height
max-width min-height min-width nav-index opacity orphans outline outline-color
outline-offset outline-style outline-width overflow overflow-style overflow-x
overflow-y padding padding-bottom padding-left padding-right padding-top page
page-break-after page-break-before page-break-inside pause pause-after
pause-before perspective perspective-origin pitch pitch-range play-during
position presentation-level quotes resize rest rest-after rest-before richness
right rotation rotation-point ruby-align ruby-overhang ruby-position ruby-span
size speak speak-header speak-numeral speak-punctuation speech-rate src stress
string-set table-layout target target-name target-new target-position
text-align text-align-last text-decoration text-emphasis text-indent
text-justify text-outline text-shadow text-transform text-wrap top transform
transform-origin transition transition-delay transition-duration
transition-property transition-timing-function unicode-bidi unicode-range
vertical-align visibility voice-balance voice-duration voice-family
voice-pitch voice-range voice-rate voice-stress voice-volume volume
white-space widows width word-break word-spacing word-wrap z-index'''
###############################################################################
# CSS minify
def _compile_props(props_text):
"""Take a list of props and prepare them."""
props = []
for line_of_props in props_text.strip().lower().splitlines():
props += line_of_props.split(" ")
props = filter(lambda line: not line.startswith('#'), props)
final_props, groups, g_id = [], [], 0
for prop in props:
if prop.strip():
final_props.append(prop)
groups.append(g_id)
else:
g_id += 1
return final_props, groups
def _prioritify(line_buffer, pgs):
"""Return args priority, priority is integer and smaller means higher."""
props, groups = pgs
priority, group = 9999, 0
for css_property in props:
if line_buffer.find(css_property + ':') != -1:
priority = props.index(css_property)
group = groups[priority]
break
return priority, group
def _props_grouper(props, pgs):
"""Return groups for properties."""
if not props:
return props
props = [_
if _.strip().endswith(";") else _.rstrip() + ";\n" for _ in props]
props_pg = zip(map(lambda prop: _prioritify(prop, pgs), props), props)
props_pg = sorted(props_pg, key=lambda item: item[0][1])
props_by_groups = map(
lambda item: list(item[1]),
itertools.groupby(props_pg, key=lambda item: item[0][1]))
props_by_groups = map(lambda item: sorted(
item, key=lambda item: item[0][0]), props_by_groups)
props = []
for group in props_by_groups:
group = map(lambda item: item[1], group)
props += group
props += ['\n']
props.pop()
return props
def sort_properties(css_unsorted_string):
"""CSS Property Sorter Function.
This function will read buffer argument, split it to a list by lines,
sort it by defined rule, and return sorted buffer if it's CSS property.
This function depends on '_prioritify' function.
"""
log.debug("Alphabetically Sorting and Grouping all CSS Properties.")
css_pgs = _compile_props(CSS_PROPS_TEXT)
pattern = re.compile(r'(.*?{\r?\n?)(.*?)(}.*?)|(.*)',
re.DOTALL + re.MULTILINE)
matched_patterns = pattern.findall(css_unsorted_string)
sorted_patterns, sorted_buffer = [], css_unsorted_string
RE_prop = re.compile(r'((?:.*?)(?:;)(?:.*?\n)|(?:.*))',
re.DOTALL + re.MULTILINE)
if len(matched_patterns) != 0:
for matched_groups in matched_patterns:
sorted_patterns += matched_groups[0].splitlines(True)
props = map(lambda line: line.lstrip('\n'),
RE_prop.findall(matched_groups[1]))
props = list(filter(lambda line: line.strip('\n '), props))
props = _props_grouper(props, css_pgs)
sorted_patterns += props
sorted_patterns += matched_groups[2].splitlines(True)
sorted_patterns += matched_groups[3].splitlines(True)
sorted_buffer = ''.join(sorted_patterns)
return sorted_buffer
def remove_comments(css):
"""Remove all CSS comment blocks."""
log.debug("Removing all Comments.")
iemac, preserve = False, False
comment_start = css.find("/*")
while comment_start >= 0: # Preserve comments that look like `/*!...*/`.
# Slicing is used to make sure we dont get an IndexError.
preserve = css[comment_start + 2:comment_start + 3] == "!"
comment_end = css.find("*/", comment_start + 2)
if comment_end < 0:
if not preserve:
css = css[:comment_start]
break
elif comment_end >= (comment_start + 2):
if css[comment_end - 1] == "\\":
# This is an IE Mac-specific comment; leave this one and the
# following one alone.
comment_start = comment_end + 2
iemac = True
elif iemac:
comment_start = comment_end + 2
iemac = False
elif not preserve:
css = css[:comment_start] + css[comment_end + 2:]
else:
comment_start = comment_end + 2
comment_start = css.find("/*", comment_start)
return css
def remove_unnecessary_whitespace(css):
"""Remove unnecessary whitespace characters."""
log.debug("Removing all unnecessary white spaces.")
def pseudoclasscolon(css):
"""Prevent 'p :link' from becoming 'p:link'.
Translates 'p :link' into 'p ___PSEUDOCLASSCOLON___link'.
This is translated back again later.
"""
regex = re.compile(r"(^|\})(([^\{\:])+\:)+([^\{]*\{)")
match = regex.search(css)
while match:
css = ''.join([
css[:match.start()],
match.group().replace(":", "___PSEUDOCLASSCOLON___"),
css[match.end():]])
match = regex.search(css)
return css
css = pseudoclasscolon(css)
# Remove spaces from before things.
css = re.sub(r"\s+([!{};:>+\(\)\],])", r"\1", css)
# If there is a `@charset`, then only allow one, and move to beginning.
css = re.sub(r"^(.*)(@charset \"[^\"]*\";)", r"\2\1", css)
css = re.sub(r"^(\s*@charset [^;]+;\s*)+", r"\1", css)
# Put the space back in for a few cases, such as `@media screen` and
# `(-webkit-min-device-pixel-ratio:0)`.
css = re.sub(r"\band\(", "and (", css)
# Put the colons back.
css = css.replace('___PSEUDOCLASSCOLON___', ':')
# Remove spaces from after things.
css = re.sub(r"([!{}:;>+\(\[,])\s+", r"\1", css)
return css
def remove_unnecessary_semicolons(css):
"""Remove unnecessary semicolons."""
log.debug("Removing all unnecessary semicolons.")
return re.sub(r";+\}", "}", css)
def remove_empty_rules(css):
"""Remove empty rules."""
log.debug("Removing all unnecessary empty rules.")
return re.sub(r"[^\}\{]+\{\}", "", css)
def normalize_rgb_colors_to_hex(css):
"""Convert `rgb(51,102,153)` to `#336699`."""
log.debug("Converting all rgba to hexadecimal color values.")
regex = re.compile(r"rgb\s*\(\s*([0-9,\s]+)\s*\)")
match = regex.search(css)
while match:
colors = map(lambda s: s.strip(), match.group(1).split(","))
hexcolor = '#%.2x%.2x%.2x' % tuple(map(int, colors))
css = css.replace(match.group(), hexcolor)
match = regex.search(css)
return css
def condense_zero_units(css):
"""Replace `0(px, em, %, etc)` with `0`."""
log.debug("Condensing all zeroes on values.")
return re.sub(r"([\s:])(0)(px|em|%|in|cm|mm|pc|pt|ex|rem)", r"\1\2", css)
def condense_multidimensional_zeros(css):
"""Replace `:0 0 0 0;`, `:0 0 0;` etc. with `:0;`."""
log.debug("Condensing all multidimensional zeroes on values.")
css = css.replace(":0 0 0 0;", ":0;")
css = css.replace(":0 0 0;", ":0;")
css = css.replace(":0 0;", ":0;")
# Revert `background-position:0;` to the valid `background-position:0 0;`.
css = css.replace("background-position:0;", "background-position:0 0;")
css = css.replace("transform-origin:0;", "transform-origin:0 0;")
return css
def condense_floating_points(css):
"""Replace `0.6` with `.6` where possible."""
log.debug("Condensing all floating point values.")
return re.sub(r"(:|\s)0+\.(\d+)", r"\1.\2", css)
def condense_hex_colors(css):
"""Shorten colors from #AABBCC to #ABC where possible."""
log.debug("Condensing all hexadecimal color values.")
regex = re.compile(
r"""([^\"'=\s])(\s*)#([0-9a-f])([0-9a-f])([0-9a-f])"""
+ r"([0-9a-f])([0-9a-f])([0-9a-f])", re.I | re.S)
match = regex.search(css)
while match:
first = match.group(3) + match.group(5) + match.group(7)
second = match.group(4) + match.group(6) + match.group(8)
if first.lower() == second.lower():
css = css.replace(
match.group(), match.group(1) + match.group(2) + '#' + first)
match = regex.search(css, match.end() - 3)
else:
match = regex.search(css, match.end())
return css
def condense_whitespace(css):
"""Condense multiple adjacent whitespace characters into one."""
log.debug("Condensing all unnecessary white spaces.")
return re.sub(r"\s+", " ", css)
def condense_semicolons(css):
"""Condense multiple adjacent semicolon characters into one."""
log.debug("Condensing all unnecessary multiple adjacent semicolons.")
return re.sub(r";;+", ";", css)
def wrap_css_lines(css, line_length=80):
"""Wrap the lines of the given CSS to an approximate length."""
log.debug("Wrapping lines to ~{} max line lenght.".format(line_length))
lines, line_start = [], 0
for i, char in enumerate(css):
# Its safe to break after } characters.
if char == '}' and (i - line_start >= line_length):
lines.append(css[line_start:i + 1])
line_start = i + 1
if line_start < len(css):
lines.append(css[line_start:])
return '\n'.join(lines)
def condense_font_weight(css):
"""Condense multiple font weights into shorter integer equals."""
log.debug("Condensing font weights on values.")
return css.replace(':normal;', ':400;').replace(':bold;', ':700;')
def condense_std_named_colors(css):
"""Condense named color values to shorter replacement using HEX."""
log.debug("Condensing standard named color values.")
for color_name, color_hexa in iter(tuple({
':aqua;': ':#0ff;', ':blue;': ':#00f;',
':fuchsia;': ':#f0f;', ':yellow;': ':#ff0;'}.items())):
css = css.replace(color_name, color_hexa)
return css
def condense_xtra_named_colors(css):
"""Condense named color values to shorter replacement using HEX."""
log.debug("Condensing extended named color values.")
for k, v in iter(tuple(EXTENDED_NAMED_COLORS.items())):
same_color_but_rgb = 'rgb({},{},{})'.format(v[0], v[1], v[2])
if len(k) > len(same_color_but_rgb):
css = css.replace(k, same_color_but_rgb)
return css
def remove_url_quotes(css):
"""Fix for url() does not need quotes."""
log.debug("Removing quotes from url.")
return re.sub(r'url\((["\'])([^)]*)\1\)', r'url(\2)', css)
def condense_border_none(css):
"""Condense border:none; to border:0;."""
log.debug("Condense borders values.")
return css.replace("border:none;", "border:0;")
def add_encoding(css):
"""Add @charset 'UTF-8'; if missing."""
log.debug("Adding encoding declaration if needed.")
return "@charset utf-8;" + css if "@charset" not in css.lower() else css
def restore_needed_space(css):
"""Fix CSS for some specific cases where a white space is needed."""
return css.replace("!important", " !important").replace( # !important
"@media(", "@media (").replace( # media queries # jpeg > jpg
"data:image/jpeg;base64,", "data:image/jpg;base64,").rstrip("\n;")
def unquote_selectors(css):
"""Fix CSS for some specific selectors where Quotes is not needed."""
log.debug("Removing unnecessary Quotes on selectors of CSS classes.")
return re.compile('([a-zA-Z]+)="([a-zA-Z0-9-_\.]+)"]').sub(r'\1=\2]', css)
def css_minify(css, wrap=False, comments=False):
"""Minify CSS main function."""
log.info("Compressing CSS...")
css = remove_comments(css) if not comments else css
css = sort_properties(css)
css = unquote_selectors(css)
css = condense_whitespace(css)
css = remove_url_quotes(css)
css = condense_xtra_named_colors(css)
css = condense_font_weight(css)
css = remove_unnecessary_whitespace(css)
css = condense_std_named_colors(css)
css = remove_unnecessary_semicolons(css)
css = condense_zero_units(css)
css = condense_multidimensional_zeros(css)
css = condense_floating_points(css)
css = normalize_rgb_colors_to_hex(css)
css = condense_hex_colors(css)
css = condense_border_none(css)
css = wrap_css_lines(css, 80) if wrap else css
css = condense_semicolons(css)
css = add_encoding(css)
css = restore_needed_space(css)
log.info("Finished compressing CSS !.")
return css.strip()
##############################################################################
# HTML Minify
def condense_html_whitespace(html):
"""Condense HTML, but be safe first if it have textareas or pre tags.
>>> condense_html_whitespace('<i> <b> <a> test </a> </b> </i><br>')
'<i><b><a> test </a></b></i><br>'
""" # first space between tags, then empty new lines and in-between.
log.debug("Removing unnecessary HTML White Spaces and Empty New Lines.")
is_ok = "<textarea" not in html.lower() and "<pre" not in html.lower()
html = re.sub(r'>\s+<', '><', html) if is_ok else html
return re.sub(r'\s{2,}|[\r\n]', ' ', html) if is_ok else html.strip()
def condense_style(html):
"""Condense style html tags.
>>> condense_style('<style type="text/css">*{border:0}</style><p>a b c')
'<style>*{border:0}</style><p>a b c'
""" # May look silly but Emmet does this and is wrong.
log.debug("Condensing HTML Style CSS tags.")
html = html.replace('<style type="text/css">', '<style>')
html = html.replace("<style type='text/css'>", '<style>')
html = html.replace("<style type=text/css>", '<style>')
return html
def condense_script(html):
"""Condense script html tags.
>>> condense_script('<script type="text/javascript"> </script><p>a b c')
'<script> </script><p>a b c'
""" # May look silly but Emmet does this and is wrong.
log.debug("Condensing HTML Script JS tags.")
html = html.replace('<script type="text/javascript">', '<script>')
html = html.replace("<style type='text/javascript'>", '<script>')
html = html.replace("<style type=text/javascript>", '<script>')
return html
def clean_unneeded_html_tags(html):
"""Clean unneeded optional html tags.
>>> clean_unneeded_html_tags('a<body></img></td>b</th></tr></hr></br>c')
'abc'
"""
log.debug("Removing unnecessary optional HTML tags.")
for tag_to_remove in ( # May look silly but Emmet does this and is wrong.
'</area>', '</base>', '<body>', '</body>', '</br>', '</col>',
'</colgroup>', '</dd>', '</dt>', '<head>', '</head>', '</hr>',
'<html>', '</html>', '</img>', '</input>', '</li>', '</link>',
'</meta>', '</option>', '</p>', '</param>', '<tbody>', '</tbody>',
'</td>', '</tfoot>', '</th>', '</thead>', '</tr>', '</basefont>',
'</isindex>', '</param>'):
html = html.replace(tag_to_remove, '')
return html
def remove_html_comments(html):
"""Remove all HTML comments, Keep all for Grunt, Grymt and IE.
>>> _="<!-- build:dev -->a<!-- endbuild -->b<!--[if IE 7]>c<![endif]--> "
>>> _+= "<!-- kill me please -->keep" ; remove_html_comments(_)
'<!-- build:dev -->a<!-- endbuild -->b<!--[if IE 7]>c<![endif]--> keep'
""" # Grunt uses comments to as build arguments, bad practice but still.
log.debug("""Removing all unnecessary HTML comments; Keep all containing:
'build:', 'endbuild', '<!--[if]>', '<![endif]-->' for Grunt/Grymt, IE.""")
return re.compile('<!-- [^(build|endbuild)].*? -->', re.I).sub('', html)
def unquote_html_attributes(html):
"""Remove all HTML quotes on attibutes if possible.
>>> unquote_html_attributes('<img width="9" height="5" data-foo="0" >')
'<img width=9 height=5 data-foo=0 >'
""" # data-foo=0> might cause errors on IE, we leave 1 space data-foo=0 >
log.debug("Removing unnecessary Quotes on attributes of HTML tags.")
# cache all regular expressions on variables before we enter the for loop.
any_tag = re.compile(r"<\w.*?>", re.I | re.MULTILINE | re.DOTALL)
space = re.compile(r' \s+|\s +', re.MULTILINE)
space1 = re.compile(r'\w\s+\w', re.MULTILINE)
space2 = re.compile(r'"\s+>', re.MULTILINE)
space3 = re.compile(r"'\s+>", re.MULTILINE)
space4 = re.compile('"\s\s+\w+="|\'\s\s+\w+=\'|"\s\s+\w+=|\'\s\s+\w+=',
re.MULTILINE)
space6 = re.compile(r"\d\s+>", re.MULTILINE)
quotes_in_tag = re.compile('([a-zA-Z]+)="([a-zA-Z0-9-_\.]+)"')
# iterate on a for loop cleaning stuff up on the html markup.
for tag in iter(any_tag.findall(html)):
# exceptions of comments and closing tags
if tag.startswith('<!') or tag.find('</') > -1:
continue
original = tag
# remove white space inside the tag itself
tag = space2.sub('" >', tag) # preserve 1 white space is safer
tag = space3.sub("' >", tag)
for each in space1.findall(tag) + space6.findall(tag):
tag = tag.replace(each, space.sub(' ', each))
for each in space4.findall(tag):
tag = tag.replace(each, each[0] + ' ' + each[1:].lstrip())
# remove quotes on some attributes
tag = quotes_in_tag.sub(r'\1=\2', tag)
if original != tag: # has the tag been improved ?
html = html.replace(original, tag)
return html.strip()
def html_minify(html, comments=False):
"""Minify HTML main function.
>>> html_minify(' <p width="9" height="5" > <!-- a --> b </p> c <br> ')
'<p width=9 height=5 > b c <br>'
"""
log.info("Compressing HTML...")
html = remove_html_comments(html) if not comments else html
html = condense_style(html)
html = condense_script(html)
html = clean_unneeded_html_tags(html)
html = condense_html_whitespace(html)
html = unquote_html_attributes(html)
log.info("Finished compressing HTML !.")
return html.strip()
##############################################################################
# JS Minify
def simple_replacer_js(js):
"""Force strip simple replacements from Javascript."""
log.debug("Force strip simple replacements from Javascript.")
return condense_semicolons(js.replace("debugger;", ";").replace(
";}", "}").replace("; ", ";").replace(" ;", ";").rstrip("\n;"))
def js_minify(js):
"""Return a minified version of the Javascript string."""
log.info("Compressing Javascript...")
ins, outs = StringIO(js), StringIO()
JavascriptMinify(ins, outs).minify()
return force_single_line_js(outs.getvalue())
def force_single_line_js(js):
"""Force Javascript to a single line, even if need to add semicolon."""
log.debug("Forcing JS from ~{} to 1 Line.".format(len(js.splitlines())))
return ";".join(js.splitlines()) if len(js.splitlines()) > 1 else js
# regular expressions to find and work with Javascript functions and variables
function_start_regex = re.compile('(function[ \w+\s*]\(([^\)]*)\)\s*{)')
function_start_regex = re.compile('(function(\s+\w+|)\s*\(([^\)]*)\)\s*{)')
def _find_functions(whole):
"""Find function() on Javascript code."""
for res in function_start_regex.findall(whole):
function_start, function_name, params = res
params_split = [x.strip() for x in params.split(',')]
stack, code, core_code = 1, function_start, ''
start = whole.find(function_start) + len(code)
while stack > 0:
try:
next_char = whole[start]
except IndexError: # dont worry we will obfuscte the one we found
return # sometimes fails to find all functions on big files
core_code += next_char
if next_char == '{':
stack += 1
elif next_char == '}':
stack -= 1
start += 1
yield (params, params_split, core_code[:-1], function_start)
def slim_params(code):
"""Compress params on Javascript code functions.
>>> slim_params('function f(large_name,is_large){large_name*is_large}')
'function f(_0,_1){_0*_1}'
"""
old_functions, new_code = {}, code
for params, params_split, core, function_start in _find_functions(code):
params_split_use = [x for x in params_split if len(x) > 1]
_param_regex = '|'.join([r'\b%s\b' % x for x in params_split_use])
param_regex, new_params = re.compile(_param_regex), {}
for i in range(len(params_split_use)):
new_params[params_split[i]] = '_{}'.format(i)
replacer_1 = lambda __match: new_params.get(__match.group())
new_core, _params = param_regex.sub(replacer_1, core), []
for p in params_split:
_params.append(new_params.get(p, p))
new_function = function_start.replace(
params, ','.join(_params)) + new_core + '}'
old_function = function_start + core + '}'
old_functions[old_function] = new_function
regex = '|'.join([re.escape(x) for x in old_functions.keys()])
replacer_2 = lambda __match: old_functions.get(__match.group())
return re.sub(regex, replacer_2, new_code)
class NamesGenerator:
"""Class to generate names for Javascript code function variables."""
def __init__(self):
"""Init class, setup basic variables."""
self.i, self.pool = 0, list('ABCDEFGHIJKLMNOPQRSTUVWXYZ')
def next(self):
"""Work with next items.
>>> _=NamesGenerator();(_.next(),_.next(),_.next(),_.next(),_.next())
('_A', '_B', '_C', '_D', '_E')
"""
try:
e = self.pool[self.i]
self.i = self.i + 1
except IndexError:
if not hasattr(self, 'j'):
self.j = 0
self.pool.extend([x.lower() for x in self.pool])
try:
e = self.pool[self.i % len(self.pool)] + self.pool[self.j]
self.j = self.j + 1
except IndexError:
self.i += 1
self.j = 0
return self.next()
return '_{}'.format(e)
def slim_func_names(js):
"""Compress Javascript variable names inside functions.
>>> slim_func_names('function longName(p1,p2){return p1*p2}longName(2,4)')
'function _A(p1,p2){return p1*p2}_A(2,4);var longName=_A;'
"""
renamed_func, functions = [], re.compile('(function (\w+)\()').findall(js)
new_names_generator = NamesGenerator()
for whole_func, func_name in functions:
count = js.count(func_name) # more than 1 mention of the function
if len(func_name) > 3 and count > 1: # function name larger than 3
new_name = new_names_generator.next()
if re.findall(r'\b%s\b' % re.escape(new_name), js):
continue
js = re.sub(r'\b%s\b' % re.escape(func_name), new_name, js)
renamed_func.append((func_name, new_name))
list_of_replacements = ['{}={}'.format(x, y) for (x, y) in renamed_func]
js_function_name_replacements = ';var {};'.format( # ;var a=b,c=d; or ''
','.join(list_of_replacements)) if len(list_of_replacements) else ""
return js + js_function_name_replacements
def js_minify2(js):
"""Compress variables and functions names.
>>> js_minify2('function foo(long_variable_name,bar){console.log(bar);};')
'function foo(_0,_1){console.log(_1);};'
"""
log.debug("Obfuscating Javascript variables names inside functions.")
# if eval() or with{} is used on JS is not too Safe to Obfuscate stuff.
is_ok = "eval(" not in js and "with{" not in js and "with {" not in js
return slim_func_names(slim_params(js)) if is_ok else js.strip()
class JavascriptMinify(object):
"""Minify an input stream of Javascript, writing to an output stream."""
def __init__(self, instream=None, outstream=None):
"""Init class."""
self.ins, self.outs = instream, outstream
def minify(self, instream=None, outstream=None):
"""Minify Javascript using StringIO."""
if instream and outstream:
self.ins, self.outs = instream, outstream
write, read = self.outs.write, self.ins.read
space_strings = ("abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$\\")
starters, enders = '{[(+-', '}])+-"\''
newlinestart_strings = starters + space_strings
newlineend_strings = enders + space_strings
do_newline, do_space = False, False
doing_single_comment, doing_multi_comment = False, False
previous_before_comment, in_quote = '', ''
in_re, quote_buf = False, []
previous = read(1)
next1 = read(1)
if previous == '/':
if next1 == '/':
doing_single_comment = True
elif next1 == '*':
doing_multi_comment = True
else:
write(previous)
elif not previous:
return
elif previous >= '!':
if previous in "'\"":
in_quote = previous
write(previous)
previous_non_space = previous
else:
previous_non_space = ' '
if not next1:
return
while True:
next2 = read(1)
if not next2:
last = next1.strip()
conditional_1 = (doing_single_comment or doing_multi_comment)
if not conditional_1 and last not in ('', '/'):
write(last)
break
if doing_multi_comment:
if next1 == '*' and next2 == '/':
doing_multi_comment = False
next2 = read(1)
elif doing_single_comment:
if next1 in '\r\n':
doing_single_comment = False
while next2 in '\r\n':
next2 = read(1)
if not next2:
break
if previous_before_comment in ')}]':
do_newline = True
elif previous_before_comment in space_strings:
write('\n')
elif in_quote:
quote_buf.append(next1)
if next1 == in_quote:
numslashes = 0
for c in reversed(quote_buf[:-1]):
if c != '\\':
break
else:
numslashes += 1
if numslashes % 2 == 0:
in_quote = ''
write(''.join(quote_buf))
elif next1 in '\r\n':
conditional_2 = previous_non_space in newlineend_strings
if conditional_2 or previous_non_space > '~':
while 1:
if next2 < '!':
next2 = read(1)
if not next2:
break
else:
conditional_3 = next2 in newlinestart_strings
if conditional_3 or next2 > '~' or next2 == '/':
do_newline = True
break
elif next1 < '!' and not in_re:
conditional_4 = next2 in space_strings or next2 > '~'
conditional_5 = previous_non_space in space_strings
conditional_6 = previous_non_space > '~'
if (conditional_5 or conditional_6) and (conditional_4):
do_space = True
elif next1 == '/':
if in_re:
if previous != '\\':
in_re = False
write('/')
elif next2 == '/':
doing_single_comment = True
previous_before_comment = previous_non_space
elif next2 == '*':
doing_multi_comment = True
else:
in_re = previous_non_space in '(,=:[?!&|'
write('/')
else:
if do_space:
do_space = False
write(' ')
if do_newline:
write('\n')
do_newline = False
write(next1)
if not in_re and next1 in "'\"":
in_quote = next1
quote_buf = []
previous = next1
next1 = next2
if previous >= '!':
previous_non_space = previous
##############################################################################
def walkdir_to_filelist(where, target, omit):
"""Perform full walk of where, gather full path of all files."""
log.debug("""Recursively Scanning {}, searching for {}, and ignoring {}.
""".format(where, target, omit))
return tuple([os.path.join(root, f) for root, d, files in os.walk(where)
for f in files if not f.startswith('.') # ignore hidden
and not f.endswith(omit) # not process processed file
and f.endswith(target)]) # only compress target files
def process_multiple_files(file_path):
"""Process multiple CSS, JS, HTML files with multiprocessing."""
log.debug("Process {} is Compressing {}.".format(os.getpid(), file_path))
if args.watch:
previous = int(os.stat(file_path).st_mtime)
log.info("Process {} is Watching {}.".format(os.getpid(), file_path))
while True:
actual = int(os.stat(file_path).st_mtime)
if previous == actual:
sleep(60)
else:
previous = actual
log.debug("Modification detected on {}.".format(file_path))
check_working_folder(os.path.dirname(file_path))
if file_path.endswith(".css"):
process_single_css_file(file_path)
elif file_path.endswith(".js"):
process_single_js_file(file_path)
else:
process_single_html_file(file_path)
else:
if file_path.endswith(".css"):
process_single_css_file(file_path)
elif file_path.endswith(".js"):
process_single_js_file(file_path)
else:
process_single_html_file(file_path)
def prefixer_extensioner(file_path, old, new, file_content=None):
"""Take a file path and safely preppend a prefix and change extension.
This is needed because filepath.replace('.foo', '.bar') sometimes may
replace '/folder.foo/file.foo' into '/folder.bar/file.bar' wrong!.
>>> prefixer_extensioner('/tmp/test.js', '.js', '.min.js')
'/tmp/test.min.js'
"""
log.debug("Prepending '{}' Prefix to {}.".format(new.upper(), file_path))
global args
extension = os.path.splitext(file_path)[1].lower().replace(old, new)
filenames = os.path.splitext(os.path.basename(file_path))[0]
filenames = args.prefix + filenames if args.prefix else filenames
if args.hash and file_content: # http://stackoverflow.com/a/25568916
filenames += "-" + sha1(file_content.encode("utf-8")).hexdigest()[:11]
log.debug("Appending SHA1 HEX-Digest Hash to '{}'.".format(file_path))
dir_names = os.path.dirname(file_path)
file_path = os.path.join(dir_names, filenames + extension)
return file_path
def process_single_css_file(css_file_path):
"""Process a single CSS file."""
log.info("Processing CSS file: {}.".format(css_file_path))
global args
try: # Python3
with open(css_file_path, encoding="utf-8-sig") as css_file:
original_css = css_file.read()
except: # Python2
with open(css_file_path) as css_file:
original_css = css_file.read()
log.debug("INPUT: Reading CSS file {}.".format(css_file_path))
minified_css = css_minify(original_css,
wrap=args.wrap, comments=args.comments)
if args.timestamp:
taim = "/* {} */ ".format(datetime.now().isoformat()[:-7].lower())
minified_css = taim + minified_css
min_css_file_path = prefixer_extensioner(
css_file_path, ".css", ".css" if args.overwrite else ".min.css",
original_css)
if only_on_py3(args.gzip):
gz_file_path = prefixer_extensioner(
css_file_path, ".css",
".css.gz" if args.overwrite else ".min.css.gz", original_css)
log.debug("OUTPUT: Writing gZIP CSS Minified {}.".format(gz_file_path))
try:
with open(min_css_file_path, "w", encoding="utf-8") as output_file:
output_file.write(minified_css)
if only_on_py3(args.gzip):
with gzip.open(gz_file_path, "wt", encoding="utf-8") as output_gz:
output_gz.write(minified_css)
except:
with open(min_css_file_path, "w") as output_file:
output_file.write(minified_css)
if only_on_py3(args.gzip):
with gzip.open(gz_file_path, "w") as output_gz:
output_gz.write(minified_css)
log.debug("OUTPUT: Writing CSS Minified {}.".format(min_css_file_path))
def process_single_html_file(html_file_path):
"""Process a single HTML file."""
log.info("Processing HTML file: {}.".format(html_file_path))
try: # Python3
with open(html_file_path, encoding="utf-8-sig") as html_file:
minified_html = html_minify(html_file.read(),
comments=only_on_py3(args.comments))
except: # Python2
with open(html_file_path) as html_file:
minified_html = html_minify(html_file.read(),
comments=only_on_py3(args.comments))
log.debug("INPUT: Reading HTML file {}.".format(html_file_path))
html_file_path = prefixer_extensioner(
html_file_path, ".html" if args.overwrite else ".htm", ".html")
try: # Python3
with open(html_file_path, "w", encoding="utf-8") as output_file:
output_file.write(minified_html)
except: # Python2
with open(html_file_path, "w") as output_file:
output_file.write(minified_html)
log.debug("OUTPUT: Writing HTML Minified {}.".format(html_file_path))