1309 lines
42 KiB
JavaScript
1309 lines
42 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var CleanCSS = require('clean-css');
|
||
|
|
var decode = require('he').decode;
|
||
|
|
var HTMLParser = require('./htmlparser').HTMLParser;
|
||
|
|
var RelateUrl = require('relateurl');
|
||
|
|
var TokenChain = require('./tokenchain');
|
||
|
|
var UglifyJS = require('uglify-js');
|
||
|
|
var utils = require('./utils');
|
||
|
|
|
||
|
|
var trimWhitespace = String.prototype.trim ? function(str) {
|
||
|
|
if (typeof str !== 'string') {
|
||
|
|
return str;
|
||
|
|
}
|
||
|
|
return str.trim();
|
||
|
|
} : function(str) {
|
||
|
|
if (typeof str !== 'string') {
|
||
|
|
return str;
|
||
|
|
}
|
||
|
|
return str.replace(/^\s+/, '').replace(/\s+$/, '');
|
||
|
|
};
|
||
|
|
|
||
|
|
function collapseWhitespaceAll(str) {
|
||
|
|
return str && str.replace(/\s+/g, function(spaces) {
|
||
|
|
return spaces === '\t' ? '\t' : spaces.replace(/(^|\xA0+)[^\xA0]+/g, '$1 ');
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function collapseWhitespace(str, options, trimLeft, trimRight, collapseAll) {
|
||
|
|
var lineBreakBefore = '', lineBreakAfter = '';
|
||
|
|
|
||
|
|
if (options.preserveLineBreaks) {
|
||
|
|
str = str.replace(/^\s*?[\n\r]\s*/, function() {
|
||
|
|
lineBreakBefore = '\n';
|
||
|
|
return '';
|
||
|
|
}).replace(/\s*?[\n\r]\s*$/, function() {
|
||
|
|
lineBreakAfter = '\n';
|
||
|
|
return '';
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (trimLeft) {
|
||
|
|
str = str.replace(/^\s+/, function(spaces) {
|
||
|
|
var conservative = !lineBreakBefore && options.conservativeCollapse;
|
||
|
|
if (conservative && spaces === '\t') {
|
||
|
|
return '\t';
|
||
|
|
}
|
||
|
|
return spaces.replace(/^[^\xA0]+/, '').replace(/(\xA0+)[^\xA0]+/g, '$1 ') || (conservative ? ' ' : '');
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (trimRight) {
|
||
|
|
str = str.replace(/\s+$/, function(spaces) {
|
||
|
|
var conservative = !lineBreakAfter && options.conservativeCollapse;
|
||
|
|
if (conservative && spaces === '\t') {
|
||
|
|
return '\t';
|
||
|
|
}
|
||
|
|
return spaces.replace(/[^\xA0]+(\xA0+)/g, ' $1').replace(/[^\xA0]+$/, '') || (conservative ? ' ' : '');
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (collapseAll) {
|
||
|
|
// strip non space whitespace then compress spaces to one
|
||
|
|
str = collapseWhitespaceAll(str);
|
||
|
|
}
|
||
|
|
|
||
|
|
return lineBreakBefore + str + lineBreakAfter;
|
||
|
|
}
|
||
|
|
|
||
|
|
var createMapFromString = utils.createMapFromString;
|
||
|
|
// non-empty tags that will maintain whitespace around them
|
||
|
|
var inlineTags = createMapFromString('a,abbr,acronym,b,bdi,bdo,big,button,cite,code,del,dfn,em,font,i,ins,kbd,mark,math,nobr,q,rt,rp,s,samp,small,span,strike,strong,sub,sup,svg,time,tt,u,var');
|
||
|
|
// non-empty tags that will maintain whitespace within them
|
||
|
|
var inlineTextTags = createMapFromString('a,abbr,acronym,b,big,del,em,font,i,ins,kbd,mark,nobr,s,samp,small,span,strike,strong,sub,sup,time,tt,u,var');
|
||
|
|
// self-closing tags that will maintain whitespace around them
|
||
|
|
var selfClosingInlineTags = createMapFromString('comment,img,input,wbr');
|
||
|
|
|
||
|
|
function collapseWhitespaceSmart(str, prevTag, nextTag, options) {
|
||
|
|
var trimLeft = prevTag && !selfClosingInlineTags(prevTag);
|
||
|
|
if (trimLeft && !options.collapseInlineTagWhitespace) {
|
||
|
|
trimLeft = prevTag.charAt(0) === '/' ? !inlineTags(prevTag.slice(1)) : !inlineTextTags(prevTag);
|
||
|
|
}
|
||
|
|
var trimRight = nextTag && !selfClosingInlineTags(nextTag);
|
||
|
|
if (trimRight && !options.collapseInlineTagWhitespace) {
|
||
|
|
trimRight = nextTag.charAt(0) === '/' ? !inlineTextTags(nextTag.slice(1)) : !inlineTags(nextTag);
|
||
|
|
}
|
||
|
|
return collapseWhitespace(str, options, trimLeft, trimRight, prevTag && nextTag);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isConditionalComment(text) {
|
||
|
|
return /^\[if\s[^\]]+]|\[endif]$/.test(text);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isIgnoredComment(text, options) {
|
||
|
|
for (var i = 0, len = options.ignoreCustomComments.length; i < len; i++) {
|
||
|
|
if (options.ignoreCustomComments[i].test(text)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function isEventAttribute(attrName, options) {
|
||
|
|
var patterns = options.customEventAttributes;
|
||
|
|
if (patterns) {
|
||
|
|
for (var i = patterns.length; i--;) {
|
||
|
|
if (patterns[i].test(attrName)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return /^on[a-z]{3,}$/.test(attrName);
|
||
|
|
}
|
||
|
|
|
||
|
|
function canRemoveAttributeQuotes(value) {
|
||
|
|
// http://mathiasbynens.be/notes/unquoted-attribute-values
|
||
|
|
return /^[^ \t\n\f\r"'`=<>]+$/.test(value);
|
||
|
|
}
|
||
|
|
|
||
|
|
function attributesInclude(attributes, attribute) {
|
||
|
|
for (var i = attributes.length; i--;) {
|
||
|
|
if (attributes[i].name.toLowerCase() === attribute) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function isAttributeRedundant(tag, attrName, attrValue, attrs) {
|
||
|
|
attrValue = attrValue ? trimWhitespace(attrValue.toLowerCase()) : '';
|
||
|
|
|
||
|
|
return (
|
||
|
|
tag === 'script' &&
|
||
|
|
attrName === 'language' &&
|
||
|
|
attrValue === 'javascript' ||
|
||
|
|
|
||
|
|
tag === 'form' &&
|
||
|
|
attrName === 'method' &&
|
||
|
|
attrValue === 'get' ||
|
||
|
|
|
||
|
|
tag === 'input' &&
|
||
|
|
attrName === 'type' &&
|
||
|
|
attrValue === 'text' ||
|
||
|
|
|
||
|
|
tag === 'script' &&
|
||
|
|
attrName === 'charset' &&
|
||
|
|
!attributesInclude(attrs, 'src') ||
|
||
|
|
|
||
|
|
tag === 'a' &&
|
||
|
|
attrName === 'name' &&
|
||
|
|
attributesInclude(attrs, 'id') ||
|
||
|
|
|
||
|
|
tag === 'area' &&
|
||
|
|
attrName === 'shape' &&
|
||
|
|
attrValue === 'rect'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
// https://mathiasbynens.be/demo/javascript-mime-type
|
||
|
|
// https://developer.mozilla.org/en/docs/Web/HTML/Element/script#attr-type
|
||
|
|
var executableScriptsMimetypes = utils.createMap([
|
||
|
|
'text/javascript',
|
||
|
|
'text/ecmascript',
|
||
|
|
'text/jscript',
|
||
|
|
'application/javascript',
|
||
|
|
'application/x-javascript',
|
||
|
|
'application/ecmascript'
|
||
|
|
]);
|
||
|
|
|
||
|
|
function isScriptTypeAttribute(attrValue) {
|
||
|
|
attrValue = trimWhitespace(attrValue.split(/;/, 2)[0]).toLowerCase();
|
||
|
|
return attrValue === '' || executableScriptsMimetypes(attrValue);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isExecutableScript(tag, attrs) {
|
||
|
|
if (tag !== 'script') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
for (var i = 0, len = attrs.length; i < len; i++) {
|
||
|
|
var attrName = attrs[i].name.toLowerCase();
|
||
|
|
if (attrName === 'type') {
|
||
|
|
return isScriptTypeAttribute(attrs[i].value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
function isStyleLinkTypeAttribute(attrValue) {
|
||
|
|
attrValue = trimWhitespace(attrValue).toLowerCase();
|
||
|
|
return attrValue === '' || attrValue === 'text/css';
|
||
|
|
}
|
||
|
|
|
||
|
|
function isStyleSheet(tag, attrs) {
|
||
|
|
if (tag !== 'style') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
for (var i = 0, len = attrs.length; i < len; i++) {
|
||
|
|
var attrName = attrs[i].name.toLowerCase();
|
||
|
|
if (attrName === 'type') {
|
||
|
|
return isStyleLinkTypeAttribute(attrs[i].value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
var isSimpleBoolean = createMapFromString('allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,default,defaultchecked,defaultmuted,defaultselected,defer,disabled,enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,required,reversed,scoped,seamless,selected,sortable,truespeed,typemustmatch,visible');
|
||
|
|
var isBooleanValue = createMapFromString('true,false');
|
||
|
|
|
||
|
|
function isBooleanAttribute(attrName, attrValue) {
|
||
|
|
return isSimpleBoolean(attrName) || attrName === 'draggable' && !isBooleanValue(attrValue);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isUriTypeAttribute(attrName, tag) {
|
||
|
|
return (
|
||
|
|
/^(?:a|area|link|base)$/.test(tag) && attrName === 'href' ||
|
||
|
|
tag === 'img' && /^(?:src|longdesc|usemap)$/.test(attrName) ||
|
||
|
|
tag === 'object' && /^(?:classid|codebase|data|usemap)$/.test(attrName) ||
|
||
|
|
tag === 'q' && attrName === 'cite' ||
|
||
|
|
tag === 'blockquote' && attrName === 'cite' ||
|
||
|
|
(tag === 'ins' || tag === 'del') && attrName === 'cite' ||
|
||
|
|
tag === 'form' && attrName === 'action' ||
|
||
|
|
tag === 'input' && (attrName === 'src' || attrName === 'usemap') ||
|
||
|
|
tag === 'head' && attrName === 'profile' ||
|
||
|
|
tag === 'script' && (attrName === 'src' || attrName === 'for')
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isNumberTypeAttribute(attrName, tag) {
|
||
|
|
return (
|
||
|
|
/^(?:a|area|object|button)$/.test(tag) && attrName === 'tabindex' ||
|
||
|
|
tag === 'input' && (attrName === 'maxlength' || attrName === 'tabindex') ||
|
||
|
|
tag === 'select' && (attrName === 'size' || attrName === 'tabindex') ||
|
||
|
|
tag === 'textarea' && /^(?:rows|cols|tabindex)$/.test(attrName) ||
|
||
|
|
tag === 'colgroup' && attrName === 'span' ||
|
||
|
|
tag === 'col' && attrName === 'span' ||
|
||
|
|
(tag === 'th' || tag === 'td') && (attrName === 'rowspan' || attrName === 'colspan')
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function isLinkType(tag, attrs, value) {
|
||
|
|
if (tag !== 'link') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
for (var i = 0, len = attrs.length; i < len; i++) {
|
||
|
|
if (attrs[i].name === 'rel' && attrs[i].value === value) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function isMediaQuery(tag, attrs, attrName) {
|
||
|
|
return attrName === 'media' && (isLinkType(tag, attrs, 'stylesheet') || isStyleSheet(tag, attrs));
|
||
|
|
}
|
||
|
|
|
||
|
|
var srcsetTags = createMapFromString('img,source');
|
||
|
|
|
||
|
|
function isSrcset(attrName, tag) {
|
||
|
|
return attrName === 'srcset' && srcsetTags(tag);
|
||
|
|
}
|
||
|
|
|
||
|
|
function cleanAttributeValue(tag, attrName, attrValue, options, attrs) {
|
||
|
|
if (attrValue && isEventAttribute(attrName, options)) {
|
||
|
|
attrValue = trimWhitespace(attrValue).replace(/^javascript:\s*/i, '');
|
||
|
|
return options.minifyJS(attrValue, true);
|
||
|
|
}
|
||
|
|
else if (attrName === 'class') {
|
||
|
|
attrValue = trimWhitespace(attrValue);
|
||
|
|
if (options.sortClassName) {
|
||
|
|
attrValue = options.sortClassName(attrValue);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
attrValue = collapseWhitespaceAll(attrValue);
|
||
|
|
}
|
||
|
|
return attrValue;
|
||
|
|
}
|
||
|
|
else if (isUriTypeAttribute(attrName, tag)) {
|
||
|
|
attrValue = trimWhitespace(attrValue);
|
||
|
|
return isLinkType(tag, attrs, 'canonical') ? attrValue : options.minifyURLs(attrValue);
|
||
|
|
}
|
||
|
|
else if (isNumberTypeAttribute(attrName, tag)) {
|
||
|
|
return trimWhitespace(attrValue);
|
||
|
|
}
|
||
|
|
else if (attrName === 'style') {
|
||
|
|
attrValue = trimWhitespace(attrValue);
|
||
|
|
if (attrValue) {
|
||
|
|
if (/;$/.test(attrValue) && !/&#?[0-9a-zA-Z]+;$/.test(attrValue)) {
|
||
|
|
attrValue = attrValue.replace(/\s*;$/, '');
|
||
|
|
}
|
||
|
|
attrValue = unwrapInlineCSS(options.minifyCSS(wrapInlineCSS(attrValue)));
|
||
|
|
}
|
||
|
|
return attrValue;
|
||
|
|
}
|
||
|
|
else if (isSrcset(attrName, tag)) {
|
||
|
|
// https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-srcset
|
||
|
|
attrValue = trimWhitespace(attrValue).split(/\s+,\s*|\s*,\s+/).map(function(candidate) {
|
||
|
|
var url = candidate;
|
||
|
|
var descriptor = '';
|
||
|
|
var match = candidate.match(/\s+([1-9][0-9]*w|[0-9]+(?:\.[0-9]+)?x)$/);
|
||
|
|
if (match) {
|
||
|
|
url = url.slice(0, -match[0].length);
|
||
|
|
var num = +match[1].slice(0, -1);
|
||
|
|
var suffix = match[1].slice(-1);
|
||
|
|
if (num !== 1 || suffix !== 'x') {
|
||
|
|
descriptor = ' ' + num + suffix;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return options.minifyURLs(url) + descriptor;
|
||
|
|
}).join(', ');
|
||
|
|
}
|
||
|
|
else if (isMetaViewport(tag, attrs) && attrName === 'content') {
|
||
|
|
attrValue = attrValue.replace(/\s+/g, '').replace(/[0-9]+\.[0-9]+/g, function(numString) {
|
||
|
|
// "0.90000" -> "0.9"
|
||
|
|
// "1.0" -> "1"
|
||
|
|
// "1.0001" -> "1.0001" (unchanged)
|
||
|
|
return (+numString).toString();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
else if (attrValue && options.customAttrCollapse && options.customAttrCollapse.test(attrName)) {
|
||
|
|
attrValue = attrValue.replace(/\n+|\r+|\s{2,}/g, '');
|
||
|
|
}
|
||
|
|
else if (tag === 'script' && attrName === 'type') {
|
||
|
|
attrValue = trimWhitespace(attrValue.replace(/\s*;\s*/g, ';'));
|
||
|
|
}
|
||
|
|
else if (isMediaQuery(tag, attrs, attrName)) {
|
||
|
|
attrValue = trimWhitespace(attrValue);
|
||
|
|
return unwrapMediaQuery(options.minifyCSS(wrapMediaQuery(attrValue)));
|
||
|
|
}
|
||
|
|
return attrValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
function isMetaViewport(tag, attrs) {
|
||
|
|
if (tag !== 'meta') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
for (var i = 0, len = attrs.length; i < len; i++) {
|
||
|
|
if (attrs[i].name === 'name' && attrs[i].value === 'viewport') {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Wrap CSS declarations for CleanCSS > 3.x
|
||
|
|
// See https://github.com/jakubpawlowicz/clean-css/issues/418
|
||
|
|
function wrapInlineCSS(text) {
|
||
|
|
return '*{' + text + '}';
|
||
|
|
}
|
||
|
|
|
||
|
|
function unwrapInlineCSS(text) {
|
||
|
|
var matches = text.match(/^\*\{([\s\S]*)\}$/);
|
||
|
|
return matches ? matches[1] : text;
|
||
|
|
}
|
||
|
|
|
||
|
|
function wrapMediaQuery(text) {
|
||
|
|
return '@media ' + text + '{a{top:0}}';
|
||
|
|
}
|
||
|
|
|
||
|
|
function unwrapMediaQuery(text) {
|
||
|
|
var matches = text.match(/^@media ([\s\S]*?)\s*{[\s\S]*}$/);
|
||
|
|
return matches ? matches[1] : text;
|
||
|
|
}
|
||
|
|
|
||
|
|
function cleanConditionalComment(comment, options) {
|
||
|
|
return options.processConditionalComments ? comment.replace(/^(\[if\s[^\]]+]>)([\s\S]*?)(<!\[endif])$/, function(match, prefix, text, suffix) {
|
||
|
|
return prefix + minify(text, options, true) + suffix;
|
||
|
|
}) : comment;
|
||
|
|
}
|
||
|
|
|
||
|
|
function processScript(text, options, currentAttrs) {
|
||
|
|
for (var i = 0, len = currentAttrs.length; i < len; i++) {
|
||
|
|
if (currentAttrs[i].name.toLowerCase() === 'type' &&
|
||
|
|
options.processScripts.indexOf(currentAttrs[i].value) > -1) {
|
||
|
|
return minify(text, options);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return text;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Tag omission rules from https://html.spec.whatwg.org/multipage/syntax.html#optional-tags
|
||
|
|
// with the following deviations:
|
||
|
|
// - retain <body> if followed by <noscript>
|
||
|
|
// - </rb>, </rt>, </rtc>, </rp> & </tfoot> follow http://www.w3.org/TR/html5/syntax.html#optional-tags
|
||
|
|
// - retain all tags which are adjacent to non-standard HTML tags
|
||
|
|
var optionalStartTags = createMapFromString('html,head,body,colgroup,tbody');
|
||
|
|
var optionalEndTags = createMapFromString('html,head,body,li,dt,dd,p,rb,rt,rtc,rp,optgroup,option,colgroup,caption,thead,tbody,tfoot,tr,td,th');
|
||
|
|
var headerTags = createMapFromString('meta,link,script,style,template,noscript');
|
||
|
|
var descriptionTags = createMapFromString('dt,dd');
|
||
|
|
var pBlockTags = createMapFromString('address,article,aside,blockquote,details,div,dl,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hgroup,hr,main,menu,nav,ol,p,pre,section,table,ul');
|
||
|
|
var pInlineTags = createMapFromString('a,audio,del,ins,map,noscript,video');
|
||
|
|
var rubyTags = createMapFromString('rb,rt,rtc,rp');
|
||
|
|
var rtcTag = createMapFromString('rb,rtc,rp');
|
||
|
|
var optionTag = createMapFromString('option,optgroup');
|
||
|
|
var tableContentTags = createMapFromString('tbody,tfoot');
|
||
|
|
var tableSectionTags = createMapFromString('thead,tbody,tfoot');
|
||
|
|
var cellTags = createMapFromString('td,th');
|
||
|
|
var topLevelTags = createMapFromString('html,head,body');
|
||
|
|
var compactTags = createMapFromString('html,body');
|
||
|
|
var looseTags = createMapFromString('head,colgroup,caption');
|
||
|
|
var trailingTags = createMapFromString('dt,thead');
|
||
|
|
var htmlTags = createMapFromString('a,abbr,acronym,address,applet,area,article,aside,audio,b,base,basefont,bdi,bdo,bgsound,big,blink,blockquote,body,br,button,canvas,caption,center,cite,code,col,colgroup,command,content,data,datalist,dd,del,details,dfn,dialog,dir,div,dl,dt,element,em,embed,fieldset,figcaption,figure,font,footer,form,frame,frameset,h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,i,iframe,image,img,input,ins,isindex,kbd,keygen,label,legend,li,link,listing,main,map,mark,marquee,menu,menuitem,meta,meter,multicol,nav,nobr,noembed,noframes,noscript,object,ol,optgroup,option,output,p,param,picture,plaintext,pre,progress,q,rp,rt,rtc,ruby,s,samp,script,section,select,shadow,small,source,spacer,span,strike,strong,style,sub,summary,sup,table,tbody,td,template,textarea,tfoot,th,thead,time,title,tr,track,tt,u,ul,var,video,wbr,xmp');
|
||
|
|
|
||
|
|
function canRemoveParentTag(optionalStartTag, tag) {
|
||
|
|
switch (optionalStartTag) {
|
||
|
|
case 'html':
|
||
|
|
case 'head':
|
||
|
|
return true;
|
||
|
|
case 'body':
|
||
|
|
return !headerTags(tag);
|
||
|
|
case 'colgroup':
|
||
|
|
return tag === 'col';
|
||
|
|
case 'tbody':
|
||
|
|
return tag === 'tr';
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function isStartTagMandatory(optionalEndTag, tag) {
|
||
|
|
switch (tag) {
|
||
|
|
case 'colgroup':
|
||
|
|
return optionalEndTag === 'colgroup';
|
||
|
|
case 'tbody':
|
||
|
|
return tableSectionTags(optionalEndTag);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function canRemovePrecedingTag(optionalEndTag, tag) {
|
||
|
|
switch (optionalEndTag) {
|
||
|
|
case 'html':
|
||
|
|
case 'head':
|
||
|
|
case 'body':
|
||
|
|
case 'colgroup':
|
||
|
|
case 'caption':
|
||
|
|
return true;
|
||
|
|
case 'li':
|
||
|
|
case 'optgroup':
|
||
|
|
case 'tr':
|
||
|
|
return tag === optionalEndTag;
|
||
|
|
case 'dt':
|
||
|
|
case 'dd':
|
||
|
|
return descriptionTags(tag);
|
||
|
|
case 'p':
|
||
|
|
return pBlockTags(tag);
|
||
|
|
case 'rb':
|
||
|
|
case 'rt':
|
||
|
|
case 'rp':
|
||
|
|
return rubyTags(tag);
|
||
|
|
case 'rtc':
|
||
|
|
return rtcTag(tag);
|
||
|
|
case 'option':
|
||
|
|
return optionTag(tag);
|
||
|
|
case 'thead':
|
||
|
|
case 'tbody':
|
||
|
|
return tableContentTags(tag);
|
||
|
|
case 'tfoot':
|
||
|
|
return tag === 'tbody';
|
||
|
|
case 'td':
|
||
|
|
case 'th':
|
||
|
|
return cellTags(tag);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
var reEmptyAttribute = new RegExp(
|
||
|
|
'^(?:class|id|style|title|lang|dir|on(?:focus|blur|change|click|dblclick|mouse(' +
|
||
|
|
'?:down|up|over|move|out)|key(?:press|down|up)))$');
|
||
|
|
|
||
|
|
function canDeleteEmptyAttribute(tag, attrName, attrValue, options) {
|
||
|
|
var isValueEmpty = !attrValue || /^\s*$/.test(attrValue);
|
||
|
|
if (!isValueEmpty) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (typeof options.removeEmptyAttributes === 'function') {
|
||
|
|
return options.removeEmptyAttributes(attrName, tag);
|
||
|
|
}
|
||
|
|
return tag === 'input' && attrName === 'value' || reEmptyAttribute.test(attrName);
|
||
|
|
}
|
||
|
|
|
||
|
|
function hasAttrName(name, attrs) {
|
||
|
|
for (var i = attrs.length - 1; i >= 0; i--) {
|
||
|
|
if (attrs[i].name === name) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
function canRemoveElement(tag, attrs) {
|
||
|
|
switch (tag) {
|
||
|
|
case 'textarea':
|
||
|
|
return false;
|
||
|
|
case 'audio':
|
||
|
|
case 'script':
|
||
|
|
case 'video':
|
||
|
|
if (hasAttrName('src', attrs)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'iframe':
|
||
|
|
if (hasAttrName('src', attrs) || hasAttrName('srcdoc', attrs)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'object':
|
||
|
|
if (hasAttrName('data', attrs)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'applet':
|
||
|
|
if (hasAttrName('code', attrs)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
function canCollapseWhitespace(tag) {
|
||
|
|
return !/^(?:script|style|pre|textarea)$/.test(tag);
|
||
|
|
}
|
||
|
|
|
||
|
|
function canTrimWhitespace(tag) {
|
||
|
|
return !/^(?:pre|textarea)$/.test(tag);
|
||
|
|
}
|
||
|
|
|
||
|
|
function normalizeAttr(attr, attrs, tag, options) {
|
||
|
|
var attrName = options.caseSensitive ? attr.name : attr.name.toLowerCase(),
|
||
|
|
attrValue = attr.value;
|
||
|
|
|
||
|
|
if (options.decodeEntities && attrValue) {
|
||
|
|
attrValue = decode(attrValue, { isAttributeValue: true });
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.removeRedundantAttributes &&
|
||
|
|
isAttributeRedundant(tag, attrName, attrValue, attrs) ||
|
||
|
|
options.removeScriptTypeAttributes && tag === 'script' &&
|
||
|
|
attrName === 'type' && isScriptTypeAttribute(attrValue) ||
|
||
|
|
options.removeStyleLinkTypeAttributes && (tag === 'style' || tag === 'link') &&
|
||
|
|
attrName === 'type' && isStyleLinkTypeAttribute(attrValue)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
attrValue = cleanAttributeValue(tag, attrName, attrValue, options, attrs);
|
||
|
|
|
||
|
|
if (options.removeEmptyAttributes &&
|
||
|
|
canDeleteEmptyAttribute(tag, attrName, attrValue, options)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.decodeEntities && attrValue) {
|
||
|
|
attrValue = attrValue.replace(/&(#?[0-9a-zA-Z]+;)/g, '&$1');
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
attr: attr,
|
||
|
|
name: attrName,
|
||
|
|
value: attrValue
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
function buildAttr(normalized, hasUnarySlash, options, isLast, uidAttr) {
|
||
|
|
var attrName = normalized.name,
|
||
|
|
attrValue = normalized.value,
|
||
|
|
attr = normalized.attr,
|
||
|
|
attrQuote = attr.quote,
|
||
|
|
attrFragment,
|
||
|
|
emittedAttrValue;
|
||
|
|
|
||
|
|
if (typeof attrValue !== 'undefined' && (!options.removeAttributeQuotes ||
|
||
|
|
~attrValue.indexOf(uidAttr) || !canRemoveAttributeQuotes(attrValue))) {
|
||
|
|
if (!options.preventAttributesEscaping) {
|
||
|
|
if (typeof options.quoteCharacter === 'undefined') {
|
||
|
|
var apos = (attrValue.match(/'/g) || []).length;
|
||
|
|
var quot = (attrValue.match(/"/g) || []).length;
|
||
|
|
attrQuote = apos < quot ? '\'' : '"';
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
attrQuote = options.quoteCharacter === '\'' ? '\'' : '"';
|
||
|
|
}
|
||
|
|
if (attrQuote === '"') {
|
||
|
|
attrValue = attrValue.replace(/"/g, '"');
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
attrValue = attrValue.replace(/'/g, ''');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
emittedAttrValue = attrQuote + attrValue + attrQuote;
|
||
|
|
if (!isLast && !options.removeTagWhitespace) {
|
||
|
|
emittedAttrValue += ' ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// make sure trailing slash is not interpreted as HTML self-closing tag
|
||
|
|
else if (isLast && !hasUnarySlash && !/\/$/.test(attrValue)) {
|
||
|
|
emittedAttrValue = attrValue;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
emittedAttrValue = attrValue + ' ';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof attrValue === 'undefined' || options.collapseBooleanAttributes &&
|
||
|
|
isBooleanAttribute(attrName.toLowerCase(), attrValue.toLowerCase())) {
|
||
|
|
attrFragment = attrName;
|
||
|
|
if (!isLast) {
|
||
|
|
attrFragment += ' ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
attrFragment = attrName + attr.customAssign + emittedAttrValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
return attr.customOpen + attrFragment + attr.customClose;
|
||
|
|
}
|
||
|
|
|
||
|
|
function identity(value) {
|
||
|
|
return value;
|
||
|
|
}
|
||
|
|
|
||
|
|
function processOptions(options) {
|
||
|
|
['html5', 'includeAutoGeneratedTags'].forEach(function(key) {
|
||
|
|
if (!(key in options)) {
|
||
|
|
options[key] = true;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
if (typeof options.log !== 'function') {
|
||
|
|
options.log = identity;
|
||
|
|
}
|
||
|
|
|
||
|
|
var defaultTesters = ['canCollapseWhitespace', 'canTrimWhitespace'];
|
||
|
|
for (var i = 0, len = defaultTesters.length; i < len; i++) {
|
||
|
|
if (!options[defaultTesters[i]]) {
|
||
|
|
options[defaultTesters[i]] = function() {
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!('ignoreCustomComments' in options)) {
|
||
|
|
options.ignoreCustomComments = [/^!/];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!('ignoreCustomFragments' in options)) {
|
||
|
|
options.ignoreCustomFragments = [
|
||
|
|
/<%[\s\S]*?%>/,
|
||
|
|
/<\?[\s\S]*?\?>/
|
||
|
|
];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!options.minifyURLs) {
|
||
|
|
options.minifyURLs = identity;
|
||
|
|
}
|
||
|
|
if (typeof options.minifyURLs !== 'function') {
|
||
|
|
var minifyURLs = options.minifyURLs;
|
||
|
|
if (typeof minifyURLs === 'string') {
|
||
|
|
minifyURLs = { site: minifyURLs };
|
||
|
|
}
|
||
|
|
else if (typeof minifyURLs !== 'object') {
|
||
|
|
minifyURLs = {};
|
||
|
|
}
|
||
|
|
options.minifyURLs = function(text) {
|
||
|
|
try {
|
||
|
|
return RelateUrl.relate(text, minifyURLs);
|
||
|
|
}
|
||
|
|
catch (err) {
|
||
|
|
options.log(err);
|
||
|
|
return text;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!options.minifyJS) {
|
||
|
|
options.minifyJS = identity;
|
||
|
|
}
|
||
|
|
if (typeof options.minifyJS !== 'function') {
|
||
|
|
var minifyJS = options.minifyJS;
|
||
|
|
if (typeof minifyJS !== 'object') {
|
||
|
|
minifyJS = {};
|
||
|
|
}
|
||
|
|
minifyJS.fromString = true;
|
||
|
|
(minifyJS.parse || (minifyJS.parse = {})).bare_returns = false;
|
||
|
|
options.minifyJS = function(text, inline) {
|
||
|
|
var start = text.match(/^\s*<!--.*/);
|
||
|
|
var code = start ? text.slice(start[0].length).replace(/\n\s*-->\s*$/, '') : text;
|
||
|
|
try {
|
||
|
|
minifyJS.parse.bare_returns = inline;
|
||
|
|
code = UglifyJS.minify(code, minifyJS).code;
|
||
|
|
if (/;$/.test(code)) {
|
||
|
|
code = code.slice(0, -1);
|
||
|
|
}
|
||
|
|
return code;
|
||
|
|
}
|
||
|
|
catch (err) {
|
||
|
|
options.log(err);
|
||
|
|
return text;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!options.minifyCSS) {
|
||
|
|
options.minifyCSS = identity;
|
||
|
|
}
|
||
|
|
if (typeof options.minifyCSS !== 'function') {
|
||
|
|
var minifyCSS = options.minifyCSS;
|
||
|
|
if (typeof minifyCSS !== 'object') {
|
||
|
|
minifyCSS = {};
|
||
|
|
}
|
||
|
|
options.minifyCSS = function(text) {
|
||
|
|
text = text.replace(/(url\s*\(\s*)("|'|)(.*?)\2(\s*\))/ig, function(match, prefix, quote, url, suffix) {
|
||
|
|
return prefix + quote + options.minifyURLs(url) + quote + suffix;
|
||
|
|
});
|
||
|
|
try {
|
||
|
|
return new CleanCSS(minifyCSS).minify(text).styles;
|
||
|
|
}
|
||
|
|
catch (err) {
|
||
|
|
options.log(err);
|
||
|
|
return text;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function uniqueId(value) {
|
||
|
|
var id;
|
||
|
|
do {
|
||
|
|
id = Math.random().toString(36).replace(/^0\.[0-9]*/, '');
|
||
|
|
} while (~value.indexOf(id));
|
||
|
|
return id;
|
||
|
|
}
|
||
|
|
|
||
|
|
var specialContentTags = createMapFromString('script,style');
|
||
|
|
|
||
|
|
function createSortFns(value, options, uidIgnore, uidAttr) {
|
||
|
|
var attrChains = options.sortAttributes && Object.create(null);
|
||
|
|
var classChain = options.sortClassName && new TokenChain();
|
||
|
|
|
||
|
|
function attrNames(attrs) {
|
||
|
|
return attrs.map(function(attr) {
|
||
|
|
return options.caseSensitive ? attr.name : attr.name.toLowerCase();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
function shouldSkipUID(token, uid) {
|
||
|
|
return !uid || token.indexOf(uid) === -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
function shouldSkipUIDs(token) {
|
||
|
|
return shouldSkipUID(token, uidIgnore) && shouldSkipUID(token, uidAttr);
|
||
|
|
}
|
||
|
|
|
||
|
|
function scan(input) {
|
||
|
|
var currentTag, currentType;
|
||
|
|
new HTMLParser(input, {
|
||
|
|
start: function(tag, attrs) {
|
||
|
|
if (attrChains) {
|
||
|
|
if (!attrChains[tag]) {
|
||
|
|
attrChains[tag] = new TokenChain();
|
||
|
|
}
|
||
|
|
attrChains[tag].add(attrNames(attrs).filter(shouldSkipUIDs));
|
||
|
|
}
|
||
|
|
for (var i = 0, len = attrs.length; i < len; i++) {
|
||
|
|
var attr = attrs[i];
|
||
|
|
if (classChain && (options.caseSensitive ? attr.name : attr.name.toLowerCase()) === 'class') {
|
||
|
|
classChain.add(trimWhitespace(attr.value).split(/\s+/).filter(shouldSkipUIDs));
|
||
|
|
}
|
||
|
|
else if (options.processScripts && attr.name.toLowerCase() === 'type') {
|
||
|
|
currentTag = tag;
|
||
|
|
currentType = attr.value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
end: function() {
|
||
|
|
currentTag = '';
|
||
|
|
},
|
||
|
|
chars: function(text) {
|
||
|
|
if (options.processScripts && specialContentTags(currentTag) &&
|
||
|
|
options.processScripts.indexOf(currentType) > -1) {
|
||
|
|
scan(text);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
var log = options.log;
|
||
|
|
options.log = null;
|
||
|
|
options.sortAttributes = false;
|
||
|
|
options.sortClassName = false;
|
||
|
|
scan(minify(value, options));
|
||
|
|
options.log = log;
|
||
|
|
if (attrChains) {
|
||
|
|
var attrSorters = Object.create(null);
|
||
|
|
for (var tag in attrChains) {
|
||
|
|
attrSorters[tag] = attrChains[tag].createSorter();
|
||
|
|
}
|
||
|
|
options.sortAttributes = function(tag, attrs) {
|
||
|
|
var sorter = attrSorters[tag];
|
||
|
|
if (sorter) {
|
||
|
|
var attrMap = Object.create(null);
|
||
|
|
var names = attrNames(attrs);
|
||
|
|
names.forEach(function(name, index) {
|
||
|
|
(attrMap[name] || (attrMap[name] = [])).push(attrs[index]);
|
||
|
|
});
|
||
|
|
sorter.sort(names).forEach(function(name, index) {
|
||
|
|
attrs[index] = attrMap[name].shift();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
if (classChain) {
|
||
|
|
var sorter = classChain.createSorter();
|
||
|
|
options.sortClassName = function(value) {
|
||
|
|
return sorter.sort(value.split(/\s+/)).join(' ');
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function minify(value, options, partialMarkup) {
|
||
|
|
options = options || {};
|
||
|
|
var optionsStack = [];
|
||
|
|
processOptions(options);
|
||
|
|
if (options.collapseWhitespace) {
|
||
|
|
value = collapseWhitespace(value, options, true, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
var buffer = [],
|
||
|
|
charsPrevTag,
|
||
|
|
currentChars = '',
|
||
|
|
hasChars,
|
||
|
|
currentTag = '',
|
||
|
|
currentAttrs = [],
|
||
|
|
stackNoTrimWhitespace = [],
|
||
|
|
stackNoCollapseWhitespace = [],
|
||
|
|
optionalStartTag = '',
|
||
|
|
optionalEndTag = '',
|
||
|
|
t = Date.now(),
|
||
|
|
ignoredMarkupChunks = [],
|
||
|
|
ignoredCustomMarkupChunks = [],
|
||
|
|
uidIgnore,
|
||
|
|
uidAttr,
|
||
|
|
uidPattern;
|
||
|
|
|
||
|
|
// temporarily replace ignored chunks with comments,
|
||
|
|
// so that we don't have to worry what's there.
|
||
|
|
// for all we care there might be
|
||
|
|
// completely-horribly-broken-alien-non-html-emoj-cthulhu-filled content
|
||
|
|
value = value.replace(/<!-- htmlmin:ignore -->([\s\S]*?)<!-- htmlmin:ignore -->/g, function(match, group1) {
|
||
|
|
if (!uidIgnore) {
|
||
|
|
uidIgnore = uniqueId(value);
|
||
|
|
var pattern = new RegExp('^' + uidIgnore + '([0-9]+)$');
|
||
|
|
if (options.ignoreCustomComments) {
|
||
|
|
options.ignoreCustomComments.push(pattern);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
options.ignoreCustomComments = [pattern];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
var token = '<!--' + uidIgnore + ignoredMarkupChunks.length + '-->';
|
||
|
|
ignoredMarkupChunks.push(group1);
|
||
|
|
return token;
|
||
|
|
});
|
||
|
|
|
||
|
|
function escapeFragments(text) {
|
||
|
|
return text.replace(uidPattern, function(match, prefix, index) {
|
||
|
|
var chunks = ignoredCustomMarkupChunks[+index];
|
||
|
|
return chunks[1] + uidAttr + index + chunks[2];
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
var customFragments = options.ignoreCustomFragments.map(function(re) {
|
||
|
|
return re.source;
|
||
|
|
});
|
||
|
|
if (customFragments.length) {
|
||
|
|
var reCustomIgnore = new RegExp('\\s*(?:' + customFragments.join('|') + ')+\\s*', 'g');
|
||
|
|
// temporarily replace custom ignored fragments with unique attributes
|
||
|
|
value = value.replace(reCustomIgnore, function(match) {
|
||
|
|
if (!uidAttr) {
|
||
|
|
uidAttr = uniqueId(value);
|
||
|
|
uidPattern = new RegExp('(\\s*)' + uidAttr + '([0-9]+)(\\s*)', 'g');
|
||
|
|
var minifyCSS = options.minifyCSS;
|
||
|
|
if (minifyCSS) {
|
||
|
|
options.minifyCSS = function(text) {
|
||
|
|
return minifyCSS(escapeFragments(text));
|
||
|
|
};
|
||
|
|
}
|
||
|
|
var minifyJS = options.minifyJS;
|
||
|
|
if (minifyJS) {
|
||
|
|
options.minifyJS = function(text, inline) {
|
||
|
|
return minifyJS(escapeFragments(text), inline);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
var token = uidAttr + ignoredCustomMarkupChunks.length;
|
||
|
|
ignoredCustomMarkupChunks.push(/^(\s*)[\s\S]*?(\s*)$/.exec(match));
|
||
|
|
return '\t' + token + '\t';
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.sortAttributes && typeof options.sortAttributes !== 'function' ||
|
||
|
|
options.sortClassName && typeof options.sortClassName !== 'function') {
|
||
|
|
createSortFns(value, options, uidIgnore, uidAttr);
|
||
|
|
}
|
||
|
|
|
||
|
|
function _canCollapseWhitespace(tag, attrs) {
|
||
|
|
return canCollapseWhitespace(tag) || options.canCollapseWhitespace(tag, attrs);
|
||
|
|
}
|
||
|
|
|
||
|
|
function _canTrimWhitespace(tag, attrs) {
|
||
|
|
return canTrimWhitespace(tag) || options.canTrimWhitespace(tag, attrs);
|
||
|
|
}
|
||
|
|
|
||
|
|
function removeStartTag() {
|
||
|
|
var index = buffer.length - 1;
|
||
|
|
while (index > 0 && !/^<[^/!]/.test(buffer[index])) {
|
||
|
|
index--;
|
||
|
|
}
|
||
|
|
buffer.length = Math.max(0, index);
|
||
|
|
}
|
||
|
|
|
||
|
|
function removeEndTag() {
|
||
|
|
var index = buffer.length - 1;
|
||
|
|
while (index > 0 && !/^<\//.test(buffer[index])) {
|
||
|
|
index--;
|
||
|
|
}
|
||
|
|
buffer.length = Math.max(0, index);
|
||
|
|
}
|
||
|
|
|
||
|
|
// look for trailing whitespaces, bypass any inline tags
|
||
|
|
function trimTrailingWhitespace(index, nextTag) {
|
||
|
|
for (var endTag = null; index >= 0 && _canTrimWhitespace(endTag); index--) {
|
||
|
|
var str = buffer[index];
|
||
|
|
var match = str.match(/^<\/([\w:-]+)>$/);
|
||
|
|
if (match) {
|
||
|
|
endTag = match[1];
|
||
|
|
}
|
||
|
|
else if (/>$/.test(str) || (buffer[index] = collapseWhitespaceSmart(str, null, nextTag, options))) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// look for trailing whitespaces from previously processed text
|
||
|
|
// which may not be trimmed due to a following comment or an empty
|
||
|
|
// element which has now been removed
|
||
|
|
function squashTrailingWhitespace(nextTag) {
|
||
|
|
var charsIndex = buffer.length - 1;
|
||
|
|
if (buffer.length > 1) {
|
||
|
|
var item = buffer[buffer.length - 1];
|
||
|
|
if (/^(?:<!|$)/.test(item) && item.indexOf(uidIgnore) === -1) {
|
||
|
|
charsIndex--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
trimTrailingWhitespace(charsIndex, nextTag);
|
||
|
|
}
|
||
|
|
|
||
|
|
new HTMLParser(value, {
|
||
|
|
partialMarkup: partialMarkup,
|
||
|
|
html5: options.html5,
|
||
|
|
|
||
|
|
start: function(tag, attrs, unary, unarySlash, autoGenerated) {
|
||
|
|
var lowerTag = tag.toLowerCase();
|
||
|
|
|
||
|
|
if (lowerTag === 'svg') {
|
||
|
|
optionsStack.push(options);
|
||
|
|
var nextOptions = {};
|
||
|
|
for (var key in options) {
|
||
|
|
nextOptions[key] = options[key];
|
||
|
|
}
|
||
|
|
nextOptions.keepClosingSlash = true;
|
||
|
|
nextOptions.caseSensitive = true;
|
||
|
|
options = nextOptions;
|
||
|
|
}
|
||
|
|
|
||
|
|
tag = options.caseSensitive ? tag : lowerTag;
|
||
|
|
|
||
|
|
currentTag = tag;
|
||
|
|
charsPrevTag = tag;
|
||
|
|
if (!inlineTextTags(tag)) {
|
||
|
|
currentChars = '';
|
||
|
|
}
|
||
|
|
hasChars = false;
|
||
|
|
currentAttrs = attrs;
|
||
|
|
|
||
|
|
var optional = options.removeOptionalTags;
|
||
|
|
if (optional) {
|
||
|
|
var htmlTag = htmlTags(tag);
|
||
|
|
// <html> may be omitted if first thing inside is not comment
|
||
|
|
// <head> may be omitted if first thing inside is an element
|
||
|
|
// <body> may be omitted if first thing inside is not space, comment, <meta>, <link>, <script>, <style> or <template>
|
||
|
|
// <colgroup> may be omitted if first thing inside is <col>
|
||
|
|
// <tbody> may be omitted if first thing inside is <tr>
|
||
|
|
if (htmlTag && canRemoveParentTag(optionalStartTag, tag)) {
|
||
|
|
removeStartTag();
|
||
|
|
}
|
||
|
|
optionalStartTag = '';
|
||
|
|
// end-tag-followed-by-start-tag omission rules
|
||
|
|
if (htmlTag && canRemovePrecedingTag(optionalEndTag, tag)) {
|
||
|
|
removeEndTag();
|
||
|
|
// <colgroup> cannot be omitted if preceding </colgroup> is omitted
|
||
|
|
// <tbody> cannot be omitted if preceding </tbody>, </thead> or </tfoot> is omitted
|
||
|
|
optional = !isStartTagMandatory(optionalEndTag, tag);
|
||
|
|
}
|
||
|
|
optionalEndTag = '';
|
||
|
|
}
|
||
|
|
|
||
|
|
// set whitespace flags for nested tags (eg. <code> within a <pre>)
|
||
|
|
if (options.collapseWhitespace) {
|
||
|
|
if (!stackNoTrimWhitespace.length) {
|
||
|
|
squashTrailingWhitespace(tag);
|
||
|
|
}
|
||
|
|
if (!_canTrimWhitespace(tag, attrs)) {
|
||
|
|
stackNoTrimWhitespace.push(tag);
|
||
|
|
}
|
||
|
|
if (!_canCollapseWhitespace(tag, attrs)) {
|
||
|
|
stackNoCollapseWhitespace.push(tag);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var openTag = '<' + tag;
|
||
|
|
var hasUnarySlash = unarySlash && options.keepClosingSlash;
|
||
|
|
|
||
|
|
buffer.push(openTag);
|
||
|
|
|
||
|
|
if (options.sortAttributes) {
|
||
|
|
options.sortAttributes(tag, attrs);
|
||
|
|
}
|
||
|
|
|
||
|
|
var parts = [];
|
||
|
|
for (var i = attrs.length, isLast = true; --i >= 0;) {
|
||
|
|
var normalized = normalizeAttr(attrs[i], attrs, tag, options);
|
||
|
|
if (normalized) {
|
||
|
|
parts.unshift(buildAttr(normalized, hasUnarySlash, options, isLast, uidAttr));
|
||
|
|
isLast = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (parts.length > 0) {
|
||
|
|
buffer.push(' ');
|
||
|
|
buffer.push.apply(buffer, parts);
|
||
|
|
}
|
||
|
|
// start tag must never be omitted if it has any attributes
|
||
|
|
else if (optional && optionalStartTags(tag)) {
|
||
|
|
optionalStartTag = tag;
|
||
|
|
}
|
||
|
|
|
||
|
|
buffer.push(buffer.pop() + (hasUnarySlash ? '/' : '') + '>');
|
||
|
|
|
||
|
|
if (autoGenerated && !options.includeAutoGeneratedTags) {
|
||
|
|
removeStartTag();
|
||
|
|
optionalStartTag = '';
|
||
|
|
}
|
||
|
|
},
|
||
|
|
end: function(tag, attrs, autoGenerated) {
|
||
|
|
var lowerTag = tag.toLowerCase();
|
||
|
|
if (lowerTag === 'svg') {
|
||
|
|
options = optionsStack.pop();
|
||
|
|
}
|
||
|
|
tag = options.caseSensitive ? tag : lowerTag;
|
||
|
|
|
||
|
|
// check if current tag is in a whitespace stack
|
||
|
|
if (options.collapseWhitespace) {
|
||
|
|
if (stackNoTrimWhitespace.length) {
|
||
|
|
if (tag === stackNoTrimWhitespace[stackNoTrimWhitespace.length - 1]) {
|
||
|
|
stackNoTrimWhitespace.pop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
squashTrailingWhitespace('/' + tag);
|
||
|
|
}
|
||
|
|
if (stackNoCollapseWhitespace.length &&
|
||
|
|
tag === stackNoCollapseWhitespace[stackNoCollapseWhitespace.length - 1]) {
|
||
|
|
stackNoCollapseWhitespace.pop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var isElementEmpty = false;
|
||
|
|
if (tag === currentTag) {
|
||
|
|
currentTag = '';
|
||
|
|
isElementEmpty = !hasChars;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.removeOptionalTags) {
|
||
|
|
// <html>, <head> or <body> may be omitted if the element is empty
|
||
|
|
if (isElementEmpty && topLevelTags(optionalStartTag)) {
|
||
|
|
removeStartTag();
|
||
|
|
}
|
||
|
|
optionalStartTag = '';
|
||
|
|
// </html> or </body> may be omitted if not followed by comment
|
||
|
|
// </head> may be omitted if not followed by space or comment
|
||
|
|
// </p> may be omitted if no more content in non-</a> parent
|
||
|
|
// except for </dt> or </thead>, end tags may be omitted if no more content in parent element
|
||
|
|
if (htmlTags(tag) && optionalEndTag && !trailingTags(optionalEndTag) && (optionalEndTag !== 'p' || !pInlineTags(tag))) {
|
||
|
|
removeEndTag();
|
||
|
|
}
|
||
|
|
optionalEndTag = optionalEndTags(tag) ? tag : '';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.removeEmptyElements && isElementEmpty && canRemoveElement(tag, attrs)) {
|
||
|
|
// remove last "element" from buffer
|
||
|
|
removeStartTag();
|
||
|
|
optionalStartTag = '';
|
||
|
|
optionalEndTag = '';
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if (autoGenerated && !options.includeAutoGeneratedTags) {
|
||
|
|
optionalEndTag = '';
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
buffer.push('</' + tag + '>');
|
||
|
|
}
|
||
|
|
charsPrevTag = '/' + tag;
|
||
|
|
if (!inlineTags(tag)) {
|
||
|
|
currentChars = '';
|
||
|
|
}
|
||
|
|
else if (isElementEmpty) {
|
||
|
|
currentChars += '|';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
chars: function(text, prevTag, nextTag) {
|
||
|
|
prevTag = prevTag === '' ? 'comment' : prevTag;
|
||
|
|
nextTag = nextTag === '' ? 'comment' : nextTag;
|
||
|
|
if (options.decodeEntities && text && !specialContentTags(currentTag)) {
|
||
|
|
text = decode(text);
|
||
|
|
}
|
||
|
|
if (options.collapseWhitespace) {
|
||
|
|
if (!stackNoTrimWhitespace.length) {
|
||
|
|
if (prevTag === 'comment') {
|
||
|
|
var prevComment = buffer[buffer.length - 1];
|
||
|
|
if (prevComment.indexOf(uidIgnore) === -1) {
|
||
|
|
if (!prevComment) {
|
||
|
|
prevTag = charsPrevTag;
|
||
|
|
}
|
||
|
|
if (buffer.length > 1 && (!prevComment || !options.conservativeCollapse && / $/.test(currentChars))) {
|
||
|
|
var charsIndex = buffer.length - 2;
|
||
|
|
buffer[charsIndex] = buffer[charsIndex].replace(/\s+$/, function(trailingSpaces) {
|
||
|
|
text = trailingSpaces + text;
|
||
|
|
return '';
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (prevTag) {
|
||
|
|
if (prevTag === '/nobr' || prevTag === 'wbr') {
|
||
|
|
if (/^\s/.test(text)) {
|
||
|
|
var tagIndex = buffer.length - 1;
|
||
|
|
while (tagIndex > 0 && buffer[tagIndex].lastIndexOf('<' + prevTag) !== 0) {
|
||
|
|
tagIndex--;
|
||
|
|
}
|
||
|
|
trimTrailingWhitespace(tagIndex - 1, 'br');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (inlineTextTags(prevTag.charAt(0) === '/' ? prevTag.slice(1) : prevTag)) {
|
||
|
|
text = collapseWhitespace(text, options, /(?:^|\s)$/.test(currentChars));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (prevTag || nextTag) {
|
||
|
|
text = collapseWhitespaceSmart(text, prevTag, nextTag, options);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
text = collapseWhitespace(text, options, true, true);
|
||
|
|
}
|
||
|
|
if (!text && /\s$/.test(currentChars) && prevTag && prevTag.charAt(0) === '/') {
|
||
|
|
trimTrailingWhitespace(buffer.length - 1, nextTag);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!stackNoCollapseWhitespace.length && nextTag !== 'html' && !(prevTag && nextTag)) {
|
||
|
|
text = collapseWhitespace(text, options, false, false, true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (options.processScripts && specialContentTags(currentTag)) {
|
||
|
|
text = processScript(text, options, currentAttrs);
|
||
|
|
}
|
||
|
|
if (isExecutableScript(currentTag, currentAttrs)) {
|
||
|
|
text = options.minifyJS(text);
|
||
|
|
}
|
||
|
|
if (isStyleSheet(currentTag, currentAttrs)) {
|
||
|
|
text = options.minifyCSS(text);
|
||
|
|
}
|
||
|
|
if (options.removeOptionalTags && text) {
|
||
|
|
// <html> may be omitted if first thing inside is not comment
|
||
|
|
// <body> may be omitted if first thing inside is not space, comment, <meta>, <link>, <script>, <style> or <template>
|
||
|
|
if (optionalStartTag === 'html' || optionalStartTag === 'body' && !/^\s/.test(text)) {
|
||
|
|
removeStartTag();
|
||
|
|
}
|
||
|
|
optionalStartTag = '';
|
||
|
|
// </html> or </body> may be omitted if not followed by comment
|
||
|
|
// </head>, </colgroup> or </caption> may be omitted if not followed by space or comment
|
||
|
|
if (compactTags(optionalEndTag) || looseTags(optionalEndTag) && !/^\s/.test(text)) {
|
||
|
|
removeEndTag();
|
||
|
|
}
|
||
|
|
optionalEndTag = '';
|
||
|
|
}
|
||
|
|
charsPrevTag = /^\s*$/.test(text) ? prevTag : 'comment';
|
||
|
|
if (options.decodeEntities && text && !specialContentTags(currentTag)) {
|
||
|
|
// semi-colon can be omitted
|
||
|
|
// https://mathiasbynens.be/notes/ambiguous-ampersands
|
||
|
|
text = text.replace(/&(#?[0-9a-zA-Z]+;)/g, '&$1').replace(/</g, '<');
|
||
|
|
}
|
||
|
|
currentChars += text;
|
||
|
|
if (text) {
|
||
|
|
hasChars = true;
|
||
|
|
}
|
||
|
|
buffer.push(text);
|
||
|
|
},
|
||
|
|
comment: function(text, nonStandard) {
|
||
|
|
var prefix = nonStandard ? '<!' : '<!--';
|
||
|
|
var suffix = nonStandard ? '>' : '-->';
|
||
|
|
if (isConditionalComment(text)) {
|
||
|
|
text = prefix + cleanConditionalComment(text, options) + suffix;
|
||
|
|
}
|
||
|
|
else if (options.removeComments) {
|
||
|
|
if (isIgnoredComment(text, options)) {
|
||
|
|
text = '<!--' + text + '-->';
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
text = '';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
text = prefix + text + suffix;
|
||
|
|
}
|
||
|
|
if (options.removeOptionalTags && text) {
|
||
|
|
// preceding comments suppress tag omissions
|
||
|
|
optionalStartTag = '';
|
||
|
|
optionalEndTag = '';
|
||
|
|
}
|
||
|
|
buffer.push(text);
|
||
|
|
},
|
||
|
|
doctype: function(doctype) {
|
||
|
|
buffer.push(options.useShortDoctype ? '<!DOCTYPE html>' : collapseWhitespaceAll(doctype));
|
||
|
|
},
|
||
|
|
customAttrAssign: options.customAttrAssign,
|
||
|
|
customAttrSurround: options.customAttrSurround
|
||
|
|
});
|
||
|
|
|
||
|
|
if (options.removeOptionalTags) {
|
||
|
|
// <html> may be omitted if first thing inside is not comment
|
||
|
|
// <head> or <body> may be omitted if empty
|
||
|
|
if (topLevelTags(optionalStartTag)) {
|
||
|
|
removeStartTag();
|
||
|
|
}
|
||
|
|
// except for </dt> or </thead>, end tags may be omitted if no more content in parent element
|
||
|
|
if (optionalEndTag && !trailingTags(optionalEndTag)) {
|
||
|
|
removeEndTag();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (options.collapseWhitespace) {
|
||
|
|
squashTrailingWhitespace('br');
|
||
|
|
}
|
||
|
|
|
||
|
|
var str = joinResultSegments(buffer, options);
|
||
|
|
|
||
|
|
if (uidPattern) {
|
||
|
|
str = str.replace(uidPattern, function(match, prefix, index, suffix) {
|
||
|
|
var chunk = ignoredCustomMarkupChunks[+index][0];
|
||
|
|
if (options.collapseWhitespace) {
|
||
|
|
if (prefix !== '\t') {
|
||
|
|
chunk = prefix + chunk;
|
||
|
|
}
|
||
|
|
if (suffix !== '\t') {
|
||
|
|
chunk += suffix;
|
||
|
|
}
|
||
|
|
return collapseWhitespace(chunk, {
|
||
|
|
preserveLineBreaks: options.preserveLineBreaks,
|
||
|
|
conservativeCollapse: !options.trimCustomFragments
|
||
|
|
}, /^\s/.test(chunk), /\s$/.test(chunk));
|
||
|
|
}
|
||
|
|
return chunk;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
if (uidIgnore) {
|
||
|
|
str = str.replace(new RegExp('<!--' + uidIgnore + '([0-9]+)-->', 'g'), function(match, index) {
|
||
|
|
return ignoredMarkupChunks[+index];
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
options.log('minified in: ' + (Date.now() - t) + 'ms');
|
||
|
|
return str;
|
||
|
|
}
|
||
|
|
|
||
|
|
function joinResultSegments(results, options) {
|
||
|
|
var str;
|
||
|
|
var maxLineLength = options.maxLineLength;
|
||
|
|
if (maxLineLength) {
|
||
|
|
var token;
|
||
|
|
var lines = [];
|
||
|
|
var line = '';
|
||
|
|
for (var i = 0, len = results.length; i < len; i++) {
|
||
|
|
token = results[i];
|
||
|
|
if (line.length + token.length < maxLineLength) {
|
||
|
|
line += token;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
lines.push(line.replace(/^\n/, ''));
|
||
|
|
line = token;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
lines.push(line);
|
||
|
|
|
||
|
|
str = lines.join('\n');
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
str = results.join('');
|
||
|
|
}
|
||
|
|
return options.collapseWhitespace ? collapseWhitespace(str, options, true, true) : str;
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.minify = function(value, options) {
|
||
|
|
return minify(value, options);
|
||
|
|
};
|