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clean-css.js
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clean-css.js
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#!/usr/bin/env node
/* jshint latedef: false */
var util = require('util');
var fs = require('fs');
var path = require('path');
var http = require('http');
var https = require('https');
var url = require('url');
var options = {
source: null,
target: null
};
var cleanOptions = {};
var fromStdin = !process.env.__DIRECT__ && !process.stdin.isTTY;
var version = '2.1.8';
// Arguments parsing (to drop optimist dependency)
var argv = process.argv.slice(2);
argv.has = function(option) {
return this.indexOf(option) > -1;
};
(function() {
var optionMatch = /^\-\-?\w/;
for (var i = 0, l = argv.length; i < l; i++) {
if (!optionMatch.test(argv[i])) {
var isNotAfterOption = i > 0 && (!optionMatch.test(argv[i - 1]) || i == l - 1);
var isOnlyArgument = i === 0 && l == 1;
if (isNotAfterOption || isOnlyArgument) {
argv._ = argv.slice(i);
break;
}
}
}
})();
if (argv.has('-o'))
cleanOptions.target = options.target = argv[argv.indexOf('-o') + 1];
if (argv.has('-b'))
cleanOptions.keepBreaks = true;
if (argv.has('--s1'))
cleanOptions.keepSpecialComments = 1;
if (argv.has('--s0'))
cleanOptions.keepSpecialComments = 0;
if (argv.has('-s'))
cleanOptions.processImport = false;
if (argv.has('--skip-rebase'))
cleanOptions.noRebase = true;
if (argv.has('--skip-advanced'))
cleanOptions.noAdvanced = true;
if (argv.has('--compatibility'))
cleanOptions.compatibility = argv[argv.indexOf('--compatibility') + 1];
if (argv.has('--selectors-merge-mode')) {
cleanOptions.compatibility = argv[argv.indexOf('--selectors-merge-mode') + 1];
console.warn('--selectors-merge-mode is deprecated and will be removed in clean-css 2.2. Please use --compatibility %s switch instead.', cleanOptions.compatibility);
}
if (argv.has('--timeout'))
cleanOptions.timeout = { timeout: parseFloat(argv[argv.indexOf('--timeout') + 1]) * 1000 };
if (argv.has('-d'))
cleanOptions.debug = true;
if (argv.has('-r'))
cleanOptions.root = argv[argv.indexOf('-r') + 1];
if (argv._ && !fromStdin) {
options.source = argv._[0];
cleanOptions.relativeTo = path.dirname(path.resolve(options.source));
}
if (argv.has('-v')) {
util.puts(version);
process.exit(0);
}
if (argv.has('-h') || argv.has('--help') || (!fromStdin && !argv._)) {
util.puts('usage: node clean-css.js [options] -o <output-file> <input-file>\n');
util.puts('options:');
util.puts(' -e\t\t\t\t\tRemove empty declarations (e.g. a{})');
util.puts(' -b\t\t\t\t\tKeep line breaks');
util.puts(' --s0\t\t\t\t\tRemove all special comments (i.e. /*! special comment */)');
util.puts(' --s1\t\t\t\t\tRemove all special comments but the first one');
util.puts(' -s\t\t\t\t\tDisable the @import processing');
util.puts(' --skip-rebase\t\t\t\tDisable advanced processing');
util.puts(' --skip-advanced\t\t\tDisable advanced processing');
util.puts(' --selectors-merge-mode [ie8|*]\tDEPRECATED: Use --compatibility switch');
util.puts(' --compatibility [ie7|ie8|*]\t\tForce compatibility mode');
util.puts(' --timeout [seconds]\t\t\tPer connection timeout when fetching remote @imports (defaults to 5 seconds)');
util.puts(' -r\t\t\t\t\tSet a root path to which resolve absolute @import rules');
util.puts(' -d\t\t\t\t\tShow debug information (minification time & compression efficiency)');
process.exit(0);
}
// If we got here then there's some serious work to do
if (options.source) {
fs.readFile(options.source, 'utf8', function(error, data) {
if (error)
throw error;
optimize(data, function(errors, minified) {
output(minified);
});
});
} else {
var stdin = process.openStdin();
stdin.setEncoding('utf-8');
var data = '';
stdin.on('data', function(chunk) {
data += chunk;
});
stdin.on('end', function() {
optimize(data, function(errors, minified) {
output(minified);
});
});
}
function optimize(data, callback) {
var minifier = new CleanCSS(cleanOptions);
minifier.minify(data, function(errors, minified) {
if (cleanOptions.debug) {
console.error('Original: %d bytes', minifier.stats.originalSize);
console.error('Minified: %d bytes', minifier.stats.minifiedSize);
console.error('Efficiency: %d%', ~~(minifier.stats.efficiency * 10000) / 100.0);
console.error('Time spent: %dms', minifier.stats.timeSpent);
}
outputFeedback(minifier.errors, true);
outputFeedback(minifier.warnings);
if (minifier.errors.length > 0)
process.exit(1);
callback(errors, minified);
});
}
function output(minified) {
if (options.target)
fs.writeFileSync(options.target, minified, 'utf8');
else
process.stdout.write(minified);
}
function outputFeedback(messages, isError) {
var prefix = isError ? '\x1B[31mERROR\x1B[39m:' : 'WARNING:';
messages.forEach(function(message) {
console.error('%s %s', prefix, message);
});
}
// lib/colors/*
function ColorHSLToHex(data) {
// HSL to RGB converter. Both methods adapted from:
// http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
var hslToRgb = function(h, s, l) {
var r, g, b;
// normalize hue orientation b/w 0 and 360 degrees
h = h % 360;
if (h < 0)
h += 360;
h = ~~h / 360;
if (s < 0)
s = 0;
else if (s > 100)
s = 100;
s = ~~s / 100;
if (l < 0)
l = 0;
else if (l > 100)
l = 100;
l = ~~l / 100;
if (s === 0) {
r = g = b = l; // achromatic
} else {
var q = l < 0.5 ?
l * (1 + s) :
l + s - l * s;
var p = 2 * l - q;
r = hueToRgb(p, q, h + 1/3);
g = hueToRgb(p, q, h);
b = hueToRgb(p, q, h - 1/3);
}
return [~~(r * 255), ~~(g * 255), ~~(b * 255)];
};
var hueToRgb = function(p, q, t) {
if (t < 0) t += 1;
if (t > 1) t -= 1;
if (t < 1/6) return p + (q - p) * 6 * t;
if (t < 1/2) return q;
if (t < 2/3) return p + (q - p) * (2/3 - t) * 6;
return p;
};
return {
process: function() {
return data.replace(/hsl\((-?\d+),(-?\d+)%?,(-?\d+)%?\)/g, function(match, hue, saturation, lightness) {
var asRgb = hslToRgb(hue, saturation, lightness);
var redAsHex = asRgb[0].toString(16);
var greenAsHex = asRgb[1].toString(16);
var blueAsHex = asRgb[2].toString(16);
return '#' +
((redAsHex.length == 1 ? '0' : '') + redAsHex) +
((greenAsHex.length == 1 ? '0' : '') + greenAsHex) +
((blueAsHex.length == 1 ? '0' : '') + blueAsHex);
});
}
};
}
function ColorLongToShortHex(data) {
return {
process: function() {
return data.replace(/([,: \(])#([0-9a-f]{6})/gi, function(match, prefix, color) {
if (color[0] == color[1] && color[2] == color[3] && color[4] == color[5])
return prefix + '#' + color[0] + color[2] + color[4];
else
return prefix + '#' + color;
});
}
};
}
function ColorRGBToHex(data) {
return {
process: function() {
return data.replace(/rgb\((\-?\d+),(\-?\d+),(\-?\d+)\)/g, function(match, red, green, blue) {
red = Math.max(0, Math.min(~~red, 255));
green = Math.max(0, Math.min(~~green, 255));
blue = Math.max(0, Math.min(~~blue, 255));
// Credit: Asen http://jsbin.com/UPUmaGOc/2/edit?js,console
return '#' + ('00000' + (red << 16 | green << 8 | blue).toString(16)).slice(-6);
});
}
};
}
function ColorShortener(data) {
var COLORS = {
aliceblue: '#f0f8ff',
antiquewhite: '#faebd7',
aqua: '#0ff',
aquamarine: '#7fffd4',
azure: '#f0ffff',
beige: '#f5f5dc',
bisque: '#ffe4c4',
black: '#000',
blanchedalmond: '#ffebcd',
blue: '#00f',
blueviolet: '#8a2be2',
brown: '#a52a2a',
burlywood: '#deb887',
cadetblue: '#5f9ea0',
chartreuse: '#7fff00',
chocolate: '#d2691e',
coral: '#ff7f50',
cornflowerblue: '#6495ed',
cornsilk: '#fff8dc',
crimson: '#dc143c',
cyan: '#0ff',
darkblue: '#00008b',
darkcyan: '#008b8b',
darkgoldenrod: '#b8860b',
darkgray: '#a9a9a9',
darkgreen: '#006400',
darkkhaki: '#bdb76b',
darkmagenta: '#8b008b',
darkolivegreen: '#556b2f',
darkorange: '#ff8c00',
darkorchid: '#9932cc',
darkred: '#8b0000',
darksalmon: '#e9967a',
darkseagreen: '#8fbc8f',
darkslateblue: '#483d8b',
darkslategray: '#2f4f4f',
darkturquoise: '#00ced1',
darkviolet: '#9400d3',
deeppink: '#ff1493',
deepskyblue: '#00bfff',
dimgray: '#696969',
dodgerblue: '#1e90ff',
firebrick: '#b22222',
floralwhite: '#fffaf0',
forestgreen: '#228b22',
fuchsia: '#f0f',
gainsboro: '#dcdcdc',
ghostwhite: '#f8f8ff',
gold: '#ffd700',
goldenrod: '#daa520',
gray: '#808080',
green: '#008000',
greenyellow: '#adff2f',
honeydew: '#f0fff0',
hotpink: '#ff69b4',
indianred: '#cd5c5c',
indigo: '#4b0082',
ivory: '#fffff0',
khaki: '#f0e68c',
lavender: '#e6e6fa',
lavenderblush: '#fff0f5',
lawngreen: '#7cfc00',
lemonchiffon: '#fffacd',
lightblue: '#add8e6',
lightcoral: '#f08080',
lightcyan: '#e0ffff',
lightgoldenrodyellow: '#fafad2',
lightgray: '#d3d3d3',
lightgreen: '#90ee90',
lightpink: '#ffb6c1',
lightsalmon: '#ffa07a',
lightseagreen: '#20b2aa',
lightskyblue: '#87cefa',
lightslategray: '#778899',
lightsteelblue: '#b0c4de',
lightyellow: '#ffffe0',
lime: '#0f0',
limegreen: '#32cd32',
linen: '#faf0e6',
magenta: '#ff00ff',
maroon: '#800000',
mediumaquamarine: '#66cdaa',
mediumblue: '#0000cd',
mediumorchid: '#ba55d3',
mediumpurple: '#9370db',
mediumseagreen: '#3cb371',
mediumslateblue: '#7b68ee',
mediumspringgreen: '#00fa9a',
mediumturquoise: '#48d1cc',
mediumvioletred: '#c71585',
midnightblue: '#191970',
mintcream: '#f5fffa',
mistyrose: '#ffe4e1',
moccasin: '#ffe4b5',
navajowhite: '#ffdead',
navy: '#000080',
oldlace: '#fdf5e6',
olive: '#808000',
olivedrab: '#6b8e23',
orange: '#ffa500',
orangered: '#ff4500',
orchid: '#da70d6',
palegoldenrod: '#eee8aa',
palegreen: '#98fb98',
paleturquoise: '#afeeee',
palevioletred: '#db7093',
papayawhip: '#ffefd5',
peachpuff: '#ffdab9',
peru: '#cd853f',
pink: '#ffc0cb',
plum: '#dda0dd',
powderblue: '#b0e0e6',
purple: '#800080',
red: '#f00',
rosybrown: '#bc8f8f',
royalblue: '#4169e1',
saddlebrown: '#8b4513',
salmon: '#fa8072',
sandybrown: '#f4a460',
seagreen: '#2e8b57',
seashell: '#fff5ee',
sienna: '#a0522d',
silver: '#c0c0c0',
skyblue: '#87ceeb',
slateblue: '#6a5acd',
slategray: '#708090',
snow: '#fffafa',
springgreen: '#00ff7f',
steelblue: '#4682b4',
tan: '#d2b48c',
teal: '#008080',
thistle: '#d8bfd8',
tomato: '#ff6347',
turquoise: '#40e0d0',
violet: '#ee82ee',
wheat: '#f5deb3',
white: '#fff',
whitesmoke: '#f5f5f5',
yellow: '#ff0',
yellowgreen: '#9acd32'
};
var toHex = {};
var toName = {};
for (var name in COLORS) {
var color = COLORS[name];
if (name.length < color.length)
toName[color] = name;
else
toHex[name] = color;
}
return {
toHex: toHex,
toName: toName,
// replace color name with hex values if shorter (or the other way around)
process: function() {
[toHex, toName].forEach(function(conversion) {
var pattern = '(' + Object.keys(conversion).join('|') + ')';
var colorSwitcher = function(match, prefix, colorValue, suffix) {
return prefix + conversion[colorValue.toLowerCase()] + suffix;
};
data = data.replace(new RegExp('([ :,\\(])' + pattern + '([;\\}!\\) ])', 'ig'), colorSwitcher);
data = data.replace(new RegExp('(,)' + pattern + '(,)', 'ig'), colorSwitcher);
});
return data;
}
};
}
// lib/images/*
function UrlRebase(options, context) {
var process = function(data) {
var rebaseOpts = {
absolute: !!options.root,
relative: !options.root && !!options.target,
fromBase: options.relativeTo
};
if (!rebaseOpts.absolute && !rebaseOpts.relative)
return data;
if (rebaseOpts.absolute && !!options.target)
context.warnings.push('Both \'root\' and output file given so rebasing URLs as absolute paths');
if (rebaseOpts.absolute)
rebaseOpts.toBase = path.resolve(options.root);
if (rebaseOpts.relative)
rebaseOpts.toBase = path.resolve(path.dirname(options.target));
if (!rebaseOpts.fromBase || !rebaseOpts.toBase)
return data;
return UrlRewriter.process(data, rebaseOpts);
};
return { process: process };
}
var UrlRewriter = {
process: function(data, options) {
var tempData = [];
var nextStart = 0;
var nextEnd = 0;
var cursor = 0;
for (; nextEnd < data.length;) {
nextStart = data.indexOf('url(', nextEnd);
if (nextStart == -1)
break;
nextEnd = data.indexOf(')', nextStart + 4);
if (nextEnd == -1)
break;
tempData.push(data.substring(cursor, nextStart));
var url = data.substring(nextStart + 4, nextEnd).replace(/['"]/g, '');
tempData.push('url(' + this._rebased(url, options) + ')');
cursor = nextEnd + 1;
}
return tempData.length > 0 ?
tempData.join('') + data.substring(cursor, data.length) :
data;
},
_rebased: function(resource, options) {
var specialUrl = resource[0] == '/' ||
resource.substring(resource.length - 4) == '.css' ||
resource.indexOf('data:') === 0 ||
/^https?:\/\//.exec(resource) !== null ||
/__\w+__/.exec(resource) !== null;
var rebased;
if (specialUrl)
return resource;
if (/https?:\/\//.test(options.toBase))
return url.resolve(options.toBase, resource);
if (options.absolute) {
rebased = path
.resolve(path.join(options.fromBase, resource))
.replace(options.toBase, '');
} else {
rebased = path.relative(options.toBase, path.join(options.fromBase, resource));
}
return process.platform == 'win32' ?
rebased.replace(/\\/g, '/') :
rebased;
}
};
// lib/imports/*
var merge = function(source1, source2) {
var target = {};
for (var key1 in source1)
target[key1] = source1[key1];
for (var key2 in source2)
target[key2] = source2[key2];
return target;
};
function ImportInliner(context) {
var defaultOptions = {
timeout: 5000,
request: {}
};
var inlinerOptions = merge(defaultOptions, options || {});
var process = function(data, options) {
options._shared = options._shared || {
done: [],
left: []
};
var shared = options._shared;
var nextStart = 0;
var nextEnd = 0;
var cursor = 0;
var isComment = commentScanner(data);
var afterContent = contentScanner(data);
options.relativeTo = options.relativeTo || options.root;
options._baseRelativeTo = options._baseRelativeTo || options.relativeTo;
options.visited = options.visited || [];
for (; nextEnd < data.length;) {
nextStart = data.indexOf('@import', cursor);
if (nextStart == -1)
break;
if (isComment(nextStart)) {
cursor = nextStart + 1;
continue;
}
nextEnd = data.indexOf(';', nextStart);
if (nextEnd == -1) {
cursor = data.length;
data = '';
break;
}
shared.done.push(data.substring(0, nextStart));
shared.left.unshift([data.substring(nextEnd + 1), options]);
return afterContent(nextStart) ?
processNext(options) :
inline(data, nextStart, nextEnd, options);
}
// no @import matched in current data
shared.done.push(data);
return processNext(options);
};
var processNext = function(options) {
if (options._shared.left.length > 0)
return process.apply(null, options._shared.left.shift());
else
return options.whenDone(options._shared.done.join(''));
};
var commentScanner = function(data) {
var commentRegex = /(\/\*(?!\*\/)[\s\S]*?\*\/)/;
var lastStartIndex = 0;
var lastEndIndex = 0;
var noComments = false;
// test whether an index is located within a comment
var scanner = function(idx) {
var comment;
var localStartIndex = 0;
var localEndIndex = 0;
var globalStartIndex = 0;
var globalEndIndex = 0;
// return if we know there are no more comments
if (noComments)
return false;
// idx can be still within last matched comment (many @import statements inside one comment)
if (idx > lastStartIndex && idx < lastEndIndex)
return true;
comment = data.match(commentRegex);
if (!comment) {
noComments = true;
return false;
}
// get the indexes relative to the current data chunk
lastStartIndex = localStartIndex = comment.index;
localEndIndex = localStartIndex + comment[0].length;
// calculate the indexes relative to the full original data
globalEndIndex = localEndIndex + lastEndIndex;
globalStartIndex = globalEndIndex - comment[0].length;
// chop off data up to and including current comment block
data = data.substring(localEndIndex);
lastEndIndex = globalEndIndex;
// re-run scan if comment ended before the idx
if (globalEndIndex < idx)
return scanner(idx);
return globalEndIndex > idx && idx > globalStartIndex;
};
return scanner;
};
var contentScanner = function(data) {
var isComment = commentScanner(data);
var firstContentIdx = -1;
while (true) {
firstContentIdx = data.indexOf('{', firstContentIdx + 1);
if (firstContentIdx == -1 || !isComment(firstContentIdx))
break;
}
return function(idx) {
return firstContentIdx > -1 ?
idx > firstContentIdx :
false;
};
};
var inline = function(data, nextStart, nextEnd, options) {
var importDeclaration = data
.substring(data.indexOf(' ', nextStart) + 1, nextEnd)
.trim();
var viaUrl = importDeclaration.indexOf('url(') === 0;
var urlStartsAt = viaUrl ? 4 : 0;
var isQuoted = /^['"]/.exec(importDeclaration.substring(urlStartsAt, urlStartsAt + 2));
var urlEndsAt = isQuoted ?
importDeclaration.indexOf(isQuoted[0], urlStartsAt + 1) :
importDeclaration.split(' ')[0].length;
var importedFile = importDeclaration
.substring(urlStartsAt, urlEndsAt)
.replace(/['"]/g, '')
.replace(/\)$/, '')
.trim();
var mediaQuery = importDeclaration
.substring(urlEndsAt + 1)
.replace(/^\)/, '')
.trim();
var isRemote = options.isRemote ||
/^(http|https):\/\//.test(importedFile) ||
/^\/\//.test(importedFile);
if (options.localOnly && isRemote) {
context.warnings.push('Ignoring remote @import declaration of "' + importedFile + '" as no callback given.');
restoreImport(importedFile, mediaQuery, options);
return processNext(options);
}
var method = isRemote ? inlineRemoteResource : inlineLocalResource;
return method(importedFile, mediaQuery, options);
};
var inlineRemoteResource = function(importedFile, mediaQuery, options) {
var importedUrl = /^https?:\/\//.test(importedFile) ?
importedFile :
url.resolve(options.relativeTo, importedFile);
if (importedUrl.indexOf('//') === 0)
importedUrl = 'http:' + importedUrl;
if (options.visited.indexOf(importedUrl) > -1)
return processNext(options);
if (context.debug)
console.error('Inlining remote stylesheet: ' + importedUrl);
options.visited.push(importedUrl);
var get = importedUrl.indexOf('http://') === 0 ?
http.get :
https.get;
var timedOut = false;
var handleError = function(message) {
context.errors.push('Broken @import declaration of "' + importedUrl + '" - ' + message);
restoreImport(importedUrl, mediaQuery, options);
processNext(options);
};
var requestOptions = merge(url.parse(importedUrl), inlinerOptions.request);
get(requestOptions, function(res) {
if (res.statusCode < 200 || res.statusCode > 399) {
return handleError('error ' + res.statusCode);
} else if (res.statusCode > 299) {
var movedUrl = url.resolve(importedUrl, res.headers.location);
return inlineRemoteResource(movedUrl, mediaQuery, options);
}
var chunks = [];
var parsedUrl = url.parse(importedUrl);
res.on('data', function(chunk) {
chunks.push(chunk.toString());
});
res.on('end', function() {
var importedData = chunks.join('');
importedData = UrlRewriter.process(importedData, { toBase: importedUrl });
if (mediaQuery.length > 0)
importedData = '@media ' + mediaQuery + '{' + importedData + '}';
process(importedData, {
isRemote: true,
relativeTo: parsedUrl.protocol + '//' + parsedUrl.host,
_shared: options._shared,
whenDone: options.whenDone,
visited: options.visited
});
});
})
.on('error', function(res) {
handleError(res.message);
})
.on('timeout', function() {
// FIX: node 0.8 fires this event twice
if (timedOut)
return;
handleError('timeout');
timedOut = true;
})
.setTimeout(inlinerOptions.timeout);
};
var inlineLocalResource = function(importedFile, mediaQuery, options) {
var relativeTo = importedFile[0] == '/' ?
options.root :
options.relativeTo;
var fullPath = path.resolve(path.join(relativeTo, importedFile));
if (!fs.existsSync(fullPath) || !fs.statSync(fullPath).isFile()) {
context.errors.push('Broken @import declaration of "' + importedFile + '"');
return processNext(options);
}
if (options.visited.indexOf(fullPath) > -1)
return processNext(options);
if (context.debug)
console.error('Inlining local stylesheet: ' + fullPath);
options.visited.push(fullPath);
var importedData = fs.readFileSync(fullPath, 'utf8');
var importRelativeTo = path.dirname(fullPath);
importedData = UrlRewriter.process(importedData, {
relative: true,
fromBase: importRelativeTo,
toBase: options._baseRelativeTo
});
if (mediaQuery.length > 0)
importedData = '@media ' + mediaQuery + '{' + importedData + '}';
return process(importedData, {
root: options.root,
relativeTo: importRelativeTo,
_baseRelativeTo: options._baseRelativeTo,
_shared: options._shared,
visited: options.visited,
whenDone: options.whenDone,
localOnly: options.localOnly
});
};
var restoreImport = function(importedUrl, mediaQuery, options) {
var restoredImport = '@import url(' + importedUrl + ')' + (mediaQuery.length > 0 ? ' ' + mediaQuery : '') + ';';
options._shared.done.push(restoredImport);
};
// Inlines all imports taking care of repetitions, unknown files, and circular dependencies
return { process: process };
}
// lib/properties/*
function PropertyOptimizer(compatibility) {
var overridable = {
'animation-delay': ['animation'],
'animation-direction': ['animation'],
'animation-duration': ['animation'],
'animation-fill-mode': ['animation'],
'animation-iteration-count': ['animation'],
'animation-name': ['animation'],
'animation-play-state': ['animation'],
'animation-timing-function': ['animation'],
'-moz-animation-delay': ['-moz-animation'],
'-moz-animation-direction': ['-moz-animation'],
'-moz-animation-duration': ['-moz-animation'],
'-moz-animation-fill-mode': ['-moz-animation'],
'-moz-animation-iteration-count': ['-moz-animation'],
'-moz-animation-name': ['-moz-animation'],
'-moz-animation-play-state': ['-moz-animation'],
'-moz-animation-timing-function': ['-moz-animation'],
'-o-animation-delay': ['-o-animation'],
'-o-animation-direction': ['-o-animation'],
'-o-animation-duration': ['-o-animation'],
'-o-animation-fill-mode': ['-o-animation'],
'-o-animation-iteration-count': ['-o-animation'],
'-o-animation-name': ['-o-animation'],
'-o-animation-play-state': ['-o-animation'],
'-o-animation-timing-function': ['-o-animation'],
'-webkit-animation-delay': ['-webkit-animation'],
'-webkit-animation-direction': ['-webkit-animation'],
'-webkit-animation-duration': ['-webkit-animation'],
'-webkit-animation-fill-mode': ['-webkit-animation'],
'-webkit-animation-iteration-count': ['-webkit-animation'],
'-webkit-animation-name': ['-webkit-animation'],
'-webkit-animation-play-state': ['-webkit-animation'],
'-webkit-animation-timing-function': ['-webkit-animation'],
'background-attachment': ['background'],
'background-clip': ['background'],
'background-color': ['background'],
'background-image': ['background'],
'background-origin': ['background'],
'background-position': ['background'],
'background-repeat': ['background'],
'background-size': ['background'],
'border-color': ['border'],
'border-style': ['border'],
'border-width': ['border'],
'border-bottom': ['border'],
'border-bottom-color': ['border-bottom', 'border-color', 'border'],
'border-bottom-style': ['border-bottom', 'border-style', 'border'],
'border-bottom-width': ['border-bottom', 'border-width', 'border'],
'border-left': ['border'],
'border-left-color': ['border-left', 'border-color', 'border'],
'border-left-style': ['border-left', 'border-style', 'border'],
'border-left-width': ['border-left', 'border-width', 'border'],
'border-right': ['border'],
'border-right-color': ['border-right', 'border-color', 'border'],
'border-right-style': ['border-right', 'border-style', 'border'],
'border-right-width': ['border-right', 'border-width', 'border'],
'border-top': ['border'],
'border-top-color': ['border-top', 'border-color', 'border'],
'border-top-style': ['border-top', 'border-style', 'border'],
'border-top-width': ['border-top', 'border-width', 'border'],
'font-family': ['font'],
'font-size': ['font'],
'font-style': ['font'],
'font-variant': ['font'],
'font-weight': ['font'],
'list-style-image': ['list'],
'list-style-position': ['list'],
'list-style-type': ['list'],
'margin-bottom': ['margin'],
'margin-left': ['margin'],
'margin-right': ['margin'],
'margin-top': ['margin'],
'outline-color': ['outline'],
'outline-style': ['outline'],
'outline-width': ['outline'],
'padding-bottom': ['padding'],
'padding-left': ['padding'],
'padding-right': ['padding'],
'padding-top': ['padding'],
'transition-delay': ['transition'],
'transition-duration': ['transition'],
'transition-property': ['transition'],
'transition-timing-function': ['transition'],
'-moz-transition-delay': ['-moz-transition'],
'-moz-transition-duration': ['-moz-transition'],
'-moz-transition-property': ['-moz-transition'],
'-moz-transition-timing-function': ['-moz-transition'],
'-o-transition-delay': ['-o-transition'],
'-o-transition-duration': ['-o-transition'],
'-o-transition-property': ['-o-transition'],
'-o-transition-timing-function': ['-o-transition'],
'-webkit-transition-delay': ['-webkit-transition'],
'-webkit-transition-duration': ['-webkit-transition'],
'-webkit-transition-property': ['-webkit-transition'],
'-webkit-transition-timing-function': ['-webkit-transition']
};
var IE_BACKSLASH_HACK = '\\9';
var overrides = {};
for (var granular in overridable) {
for (var i = 0; i < overridable[granular].length; i++) {
var coarse = overridable[granular][i];
var list = overrides[coarse];
if (list)
list.push(granular);
else
overrides[coarse] = [granular];
}
}
var tokenize = function(body) {
var tokens = body.split(';');
var keyValues = [];
if (tokens.length === 0 || (tokens.length == 1 && tokens[0].indexOf(IE_BACKSLASH_HACK) == -1))
return;
for (var i = 0, l = tokens.length; i < l; i++) {
var token = tokens[i];
if (token === '')
continue;
var firstColon = token.indexOf(':');
keyValues.push([
token.substring(0, firstColon),
token.substring(firstColon + 1),
token.indexOf('!important') > -1,
token.indexOf(IE_BACKSLASH_HACK, firstColon + 1) > 0
]);
}
return keyValues;
};
var optimize = function(tokens, allowAdjacent) {
var merged = [];
var properties = [];
var lastProperty = null;
var rescanTrigger = {};
var removeOverridenBy = function(property, isImportant) {
var overrided = overrides[property];
for (var i = 0, l = overrided.length; i < l; i++) {
for (var j = 0; j < properties.length; j++) {
if (properties[j] != overrided[i] || (merged[j][2] && !isImportant))
continue;
merged.splice(j, 1);
properties.splice(j, 1);
j -= 1;
}
}
};
var mergeablePosition = function(position) {
if (allowAdjacent === false || allowAdjacent === true)
return allowAdjacent;
return allowAdjacent.indexOf(position) > -1;
};
tokensLoop:
for (var i = 0, l = tokens.length; i < l; i++) {
var token = tokens[i];
var property = token[0];
var isImportant = token[2];
var isIEHack = token[3];
var _property = (property == '-ms-filter' || property == 'filter') ?
(lastProperty == 'background' || lastProperty == 'background-image' ? lastProperty : property) :
property;
var toOverridePosition = 0;
if (!compatibility && isIEHack)
continue;
// comment is necessary - we assume that if two properties are one after another
// then it is intentional way of redefining property which may not be widely supported
// e.g. a{display:inline-block;display:-moz-inline-box}
// however if `mergeablePosition` yields true then the rule does not apply
// (e.g merging two adjacent selectors: `a{display:block}a{display:block}`)
if (_property != lastProperty || mergeablePosition(i)) {
while (true) {
toOverridePosition = properties.indexOf(_property, toOverridePosition);
if (toOverridePosition == -1)
break;