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1368 lines
46 KiB
1368 lines
46 KiB
'use strict'; |
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var CleanCSS = require('clean-css'); |
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var decode = require('he').decode; |
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var HTMLParser = require('./htmlparser').HTMLParser; |
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var endTag = require('./htmlparser').endTag; |
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var RelateUrl = require('relateurl'); |
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var TokenChain = require('./tokenchain'); |
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var Terser = require('terser'); |
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var utils = require('./utils'); |
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function trimWhitespace(str) { |
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return str && str.replace(/^[ \n\r\t\f]+/, '').replace(/[ \n\r\t\f]+$/, ''); |
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} |
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function collapseWhitespaceAll(str) { |
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// Non-breaking space is specifically handled inside the replacer function here: |
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return str && str.replace(/[ \n\r\t\f\xA0]+/g, function(spaces) { |
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return spaces === '\t' ? '\t' : spaces.replace(/(^|\xA0+)[^\xA0]+/g, '$1 '); |
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}); |
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} |
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function collapseWhitespace(str, options, trimLeft, trimRight, collapseAll) { |
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var lineBreakBefore = '', lineBreakAfter = ''; |
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if (options.preserveLineBreaks) { |
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str = str.replace(/^[ \n\r\t\f]*?[\n\r][ \n\r\t\f]*/, function() { |
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lineBreakBefore = '\n'; |
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return ''; |
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}).replace(/[ \n\r\t\f]*?[\n\r][ \n\r\t\f]*$/, function() { |
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lineBreakAfter = '\n'; |
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return ''; |
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}); |
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} |
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|
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if (trimLeft) { |
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// Non-breaking space is specifically handled inside the replacer function here: |
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str = str.replace(/^[ \n\r\t\f\xA0]+/, function(spaces) { |
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var conservative = !lineBreakBefore && options.conservativeCollapse; |
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if (conservative && spaces === '\t') { |
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return '\t'; |
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} |
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return spaces.replace(/^[^\xA0]+/, '').replace(/(\xA0+)[^\xA0]+/g, '$1 ') || (conservative ? ' ' : ''); |
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}); |
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} |
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if (trimRight) { |
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// Non-breaking space is specifically handled inside the replacer function here: |
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str = str.replace(/[ \n\r\t\f\xA0]+$/, function(spaces) { |
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var conservative = !lineBreakAfter && options.conservativeCollapse; |
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if (conservative && spaces === '\t') { |
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return '\t'; |
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} |
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return spaces.replace(/[^\xA0]+(\xA0+)/g, ' $1').replace(/[^\xA0]+$/, '') || (conservative ? ' ' : ''); |
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}); |
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} |
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if (collapseAll) { |
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// strip non space whitespace then compress spaces to one |
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str = collapseWhitespaceAll(str); |
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} |
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return lineBreakBefore + str + lineBreakAfter; |
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} |
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var createMapFromString = utils.createMapFromString; |
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// non-empty tags that will maintain whitespace around them |
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var inlineTags = createMapFromString('a,abbr,acronym,b,bdi,bdo,big,button,cite,code,del,dfn,em,font,i,ins,kbd,label,mark,math,nobr,object,q,rp,rt,rtc,ruby,s,samp,select,small,span,strike,strong,sub,sup,svg,textarea,time,tt,u,var'); |
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// non-empty tags that will maintain whitespace within them |
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var inlineTextTags = createMapFromString('a,abbr,acronym,b,big,del,em,font,i,ins,kbd,mark,nobr,rp,s,samp,small,span,strike,strong,sub,sup,time,tt,u,var'); |
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// self-closing tags that will maintain whitespace around them |
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var selfClosingInlineTags = createMapFromString('comment,img,input,wbr'); |
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function collapseWhitespaceSmart(str, prevTag, nextTag, options) { |
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var trimLeft = prevTag && !selfClosingInlineTags(prevTag); |
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if (trimLeft && !options.collapseInlineTagWhitespace) { |
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trimLeft = prevTag.charAt(0) === '/' ? !inlineTags(prevTag.slice(1)) : !inlineTextTags(prevTag); |
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} |
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var trimRight = nextTag && !selfClosingInlineTags(nextTag); |
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if (trimRight && !options.collapseInlineTagWhitespace) { |
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trimRight = nextTag.charAt(0) === '/' ? !inlineTextTags(nextTag.slice(1)) : !inlineTags(nextTag); |
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} |
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return collapseWhitespace(str, options, trimLeft, trimRight, prevTag && nextTag); |
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} |
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function isConditionalComment(text) { |
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return /^\[if\s[^\]]+]|\[endif]$/.test(text); |
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} |
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function isIgnoredComment(text, options) { |
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for (var i = 0, len = options.ignoreCustomComments.length; i < len; i++) { |
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if (options.ignoreCustomComments[i].test(text)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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function isEventAttribute(attrName, options) { |
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var patterns = options.customEventAttributes; |
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if (patterns) { |
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for (var i = patterns.length; i--;) { |
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if (patterns[i].test(attrName)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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return /^on[a-z]{3,}$/.test(attrName); |
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} |
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function canRemoveAttributeQuotes(value) { |
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// https://mathiasbynens.be/notes/unquoted-attribute-values |
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return /^[^ \t\n\f\r"'`=<>]+$/.test(value); |
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} |
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function attributesInclude(attributes, attribute) { |
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for (var i = attributes.length; i--;) { |
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if (attributes[i].name.toLowerCase() === attribute) { |
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return true; |
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} |
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} |
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return false; |
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} |
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function isAttributeRedundant(tag, attrName, attrValue, attrs) { |
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attrValue = attrValue ? trimWhitespace(attrValue.toLowerCase()) : ''; |
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return ( |
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tag === 'script' && |
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attrName === 'language' && |
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attrValue === 'javascript' || |
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tag === 'form' && |
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attrName === 'method' && |
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attrValue === 'get' || |
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tag === 'input' && |
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attrName === 'type' && |
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attrValue === 'text' || |
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tag === 'script' && |
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attrName === 'charset' && |
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!attributesInclude(attrs, 'src') || |
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tag === 'a' && |
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attrName === 'name' && |
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attributesInclude(attrs, 'id') || |
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tag === 'area' && |
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attrName === 'shape' && |
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attrValue === 'rect' |
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); |
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} |
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// https://mathiasbynens.be/demo/javascript-mime-type |
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// https://developer.mozilla.org/en/docs/Web/HTML/Element/script#attr-type |
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var executableScriptsMimetypes = utils.createMap([ |
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'text/javascript', |
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'text/ecmascript', |
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'text/jscript', |
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'application/javascript', |
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'application/x-javascript', |
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'application/ecmascript', |
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'module' |
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]); |
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var keepScriptsMimetypes = utils.createMap([ |
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'module' |
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]); |
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function isScriptTypeAttribute(attrValue) { |
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attrValue = trimWhitespace(attrValue.split(/;/, 2)[0]).toLowerCase(); |
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return attrValue === '' || executableScriptsMimetypes(attrValue); |
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} |
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function keepScriptTypeAttribute(attrValue) { |
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attrValue = trimWhitespace(attrValue.split(/;/, 2)[0]).toLowerCase(); |
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return keepScriptsMimetypes(attrValue); |
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} |
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function isExecutableScript(tag, attrs) { |
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if (tag !== 'script') { |
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return false; |
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} |
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for (var i = 0, len = attrs.length; i < len; i++) { |
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var attrName = attrs[i].name.toLowerCase(); |
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if (attrName === 'type') { |
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return isScriptTypeAttribute(attrs[i].value); |
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} |
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} |
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return true; |
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} |
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function isStyleLinkTypeAttribute(attrValue) { |
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attrValue = trimWhitespace(attrValue).toLowerCase(); |
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return attrValue === '' || attrValue === 'text/css'; |
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} |
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function isStyleSheet(tag, attrs) { |
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if (tag !== 'style') { |
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return false; |
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} |
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for (var i = 0, len = attrs.length; i < len; i++) { |
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var attrName = attrs[i].name.toLowerCase(); |
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if (attrName === 'type') { |
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return isStyleLinkTypeAttribute(attrs[i].value); |
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} |
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} |
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return true; |
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} |
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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'); |
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var isBooleanValue = createMapFromString('true,false'); |
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function isBooleanAttribute(attrName, attrValue) { |
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return isSimpleBoolean(attrName) || attrName === 'draggable' && !isBooleanValue(attrValue); |
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} |
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function isUriTypeAttribute(attrName, tag) { |
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return ( |
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/^(?:a|area|link|base)$/.test(tag) && attrName === 'href' || |
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tag === 'img' && /^(?:src|longdesc|usemap)$/.test(attrName) || |
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tag === 'object' && /^(?:classid|codebase|data|usemap)$/.test(attrName) || |
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tag === 'q' && attrName === 'cite' || |
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tag === 'blockquote' && attrName === 'cite' || |
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(tag === 'ins' || tag === 'del') && attrName === 'cite' || |
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tag === 'form' && attrName === 'action' || |
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tag === 'input' && (attrName === 'src' || attrName === 'usemap') || |
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tag === 'head' && attrName === 'profile' || |
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tag === 'script' && (attrName === 'src' || attrName === 'for') |
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); |
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} |
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function isNumberTypeAttribute(attrName, tag) { |
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return ( |
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/^(?:a|area|object|button)$/.test(tag) && attrName === 'tabindex' || |
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tag === 'input' && (attrName === 'maxlength' || attrName === 'tabindex') || |
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tag === 'select' && (attrName === 'size' || attrName === 'tabindex') || |
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tag === 'textarea' && /^(?:rows|cols|tabindex)$/.test(attrName) || |
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tag === 'colgroup' && attrName === 'span' || |
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tag === 'col' && attrName === 'span' || |
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(tag === 'th' || tag === 'td') && (attrName === 'rowspan' || attrName === 'colspan') |
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); |
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} |
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function isLinkType(tag, attrs, value) { |
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if (tag !== 'link') { |
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return false; |
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} |
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for (var i = 0, len = attrs.length; i < len; i++) { |
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if (attrs[i].name === 'rel' && attrs[i].value === value) { |
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return true; |
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} |
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} |
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} |
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function isMediaQuery(tag, attrs, attrName) { |
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return attrName === 'media' && (isLinkType(tag, attrs, 'stylesheet') || isStyleSheet(tag, attrs)); |
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} |
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var srcsetTags = createMapFromString('img,source'); |
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function isSrcset(attrName, tag) { |
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return attrName === 'srcset' && srcsetTags(tag); |
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} |
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async function cleanAttributeValue(tag, attrName, attrValue, options, attrs) { |
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if (isEventAttribute(attrName, options)) { |
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attrValue = trimWhitespace(attrValue).replace(/^javascript:\s*/i, ''); |
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return await options.minifyJS(attrValue, true); |
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} |
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else if (attrName === 'class') { |
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attrValue = trimWhitespace(attrValue); |
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if (options.sortClassName) { |
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attrValue = options.sortClassName(attrValue); |
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} |
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else { |
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attrValue = collapseWhitespaceAll(attrValue); |
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} |
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return attrValue; |
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} |
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else if (isUriTypeAttribute(attrName, tag)) { |
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attrValue = trimWhitespace(attrValue); |
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return isLinkType(tag, attrs, 'canonical') ? attrValue : options.minifyURLs(attrValue); |
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} |
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else if (isNumberTypeAttribute(attrName, tag)) { |
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return trimWhitespace(attrValue); |
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} |
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else if (attrName === 'style') { |
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attrValue = trimWhitespace(attrValue); |
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if (attrValue) { |
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if (/;$/.test(attrValue) && !/&#?[0-9a-zA-Z]+;$/.test(attrValue)) { |
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attrValue = attrValue.replace(/\s*;$/, ';'); |
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} |
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attrValue = options.minifyCSS(attrValue, 'inline'); |
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} |
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return attrValue; |
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} |
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else if (isSrcset(attrName, tag)) { |
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// https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-srcset |
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attrValue = trimWhitespace(attrValue).split(/\s+,\s*|\s*,\s+/).map(function(candidate) { |
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var url = candidate; |
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var descriptor = ''; |
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var match = candidate.match(/\s+([1-9][0-9]*w|[0-9]+(?:\.[0-9]+)?x)$/); |
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if (match) { |
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url = url.slice(0, -match[0].length); |
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var num = +match[1].slice(0, -1); |
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var suffix = match[1].slice(-1); |
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if (num !== 1 || suffix !== 'x') { |
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descriptor = ' ' + num + suffix; |
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} |
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} |
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return options.minifyURLs(url) + descriptor; |
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}).join(', '); |
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} |
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else if (isMetaViewport(tag, attrs) && attrName === 'content') { |
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attrValue = attrValue.replace(/\s+/g, '').replace(/[0-9]+\.[0-9]+/g, function(numString) { |
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// "0.90000" -> "0.9" |
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// "1.0" -> "1" |
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// "1.0001" -> "1.0001" (unchanged) |
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return (+numString).toString(); |
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}); |
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} |
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else if (isContentSecurityPolicy(tag, attrs) && attrName.toLowerCase() === 'content') { |
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return collapseWhitespaceAll(attrValue); |
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} |
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else if (options.customAttrCollapse && options.customAttrCollapse.test(attrName)) { |
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attrValue = trimWhitespace(attrValue.replace(/ ?[\n\r]+ ?/g, '').replace(/\s{2,}/g, options.conservativeCollapse ? ' ' : '')); |
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} |
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else if (tag === 'script' && attrName === 'type') { |
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attrValue = trimWhitespace(attrValue.replace(/\s*;\s*/g, ';')); |
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} |
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else if (isMediaQuery(tag, attrs, attrName)) { |
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attrValue = trimWhitespace(attrValue); |
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return options.minifyCSS(attrValue, 'media'); |
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} |
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return attrValue; |
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} |
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function isMetaViewport(tag, attrs) { |
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if (tag !== 'meta') { |
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return false; |
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} |
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for (var i = 0, len = attrs.length; i < len; i++) { |
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if (attrs[i].name === 'name' && attrs[i].value === 'viewport') { |
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return true; |
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} |
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} |
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} |
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function isContentSecurityPolicy(tag, attrs) { |
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if (tag !== 'meta') { |
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return false; |
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} |
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for (var i = 0, len = attrs.length; i < len; i++) { |
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if (attrs[i].name.toLowerCase() === 'http-equiv' && attrs[i].value.toLowerCase() === 'content-security-policy') { |
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return true; |
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} |
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} |
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} |
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function ignoreCSS(id) { |
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return '/* clean-css ignore:start */' + id + '/* clean-css ignore:end */'; |
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} |
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|
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// Wrap CSS declarations for CleanCSS > 3.x |
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// See https://github.com/jakubpawlowicz/clean-css/issues/418 |
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function wrapCSS(text, type) { |
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switch (type) { |
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case 'inline': |
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return '*{' + text + '}'; |
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case 'media': |
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return '@media ' + text + '{a{top:0}}'; |
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default: |
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return text; |
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} |
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} |
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function unwrapCSS(text, type) { |
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var matches; |
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switch (type) { |
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case 'inline': |
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matches = text.match(/^\*\{([\s\S]*)\}$/); |
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break; |
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case 'media': |
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matches = text.match(/^@media ([\s\S]*?)\s*{[\s\S]*}$/); |
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break; |
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} |
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return matches ? matches[1] : text; |
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} |
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async function cleanConditionalComment(comment, options) { |
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return options.processConditionalComments ? await utils.replaceAsync(comment, /^(\[if\s[^\]]+]>)([\s\S]*?)(<!\[endif])$/, async function(match, prefix, text, suffix) { |
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return prefix + await minify(text, options, true) + suffix; |
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}) : comment; |
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} |
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|
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async function processScript(text, options, currentAttrs) { |
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for (var i = 0, len = currentAttrs.length; i < len; i++) { |
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if (currentAttrs[i].name.toLowerCase() === 'type' && |
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options.processScripts.indexOf(currentAttrs[i].value) > -1) { |
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return await minify(text, options); |
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} |
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} |
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return text; |
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} |
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|
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// Tag omission rules from https://html.spec.whatwg.org/multipage/syntax.html#optional-tags |
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// with the following deviations: |
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// - retain <body> if followed by <noscript> |
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// - </rb>, </rt>, </rtc>, </rp> & </tfoot> follow https://www.w3.org/TR/html5/syntax.html#optional-tags |
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// - retain all tags which are adjacent to non-standard HTML tags |
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var optionalStartTags = createMapFromString('html,head,body,colgroup,tbody'); |
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var optionalEndTags = createMapFromString('html,head,body,li,dt,dd,p,rb,rt,rtc,rp,optgroup,option,colgroup,caption,thead,tbody,tfoot,tr,td,th'); |
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var headerTags = createMapFromString('meta,link,script,style,template,noscript'); |
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var descriptionTags = createMapFromString('dt,dd'); |
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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'); |
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var pInlineTags = createMapFromString('a,audio,del,ins,map,noscript,video'); |
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var rubyTags = createMapFromString('rb,rt,rtc,rp'); |
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var rtcTag = createMapFromString('rb,rtc,rp'); |
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var optionTag = createMapFromString('option,optgroup'); |
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var tableContentTags = createMapFromString('tbody,tfoot'); |
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var tableSectionTags = createMapFromString('thead,tbody,tfoot'); |
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var cellTags = createMapFromString('td,th'); |
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var topLevelTags = createMapFromString('html,head,body'); |
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var compactTags = createMapFromString('html,body'); |
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var looseTags = createMapFromString('head,colgroup,caption'); |
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var trailingTags = createMapFromString('dt,thead'); |
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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,rb,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'); |
|
|
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function canRemoveParentTag(optionalStartTag, tag) { |
|
switch (optionalStartTag) { |
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case 'html': |
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case 'head': |
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return true; |
|
case 'body': |
|
return !headerTags(tag); |
|
case 'colgroup': |
|
return tag === 'col'; |
|
case 'tbody': |
|
return tag === 'tr'; |
|
} |
|
return false; |
|
} |
|
|
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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); |
|
} |
|
|
|
async function normalizeAttr(attr, attrs, tag, options) { |
|
var attrName = options.name(attr.name), |
|
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) && !keepScriptTypeAttribute(attrValue) || |
|
options.removeStyleLinkTypeAttributes && (tag === 'style' || tag === 'link') && |
|
attrName === 'type' && isStyleLinkTypeAttribute(attrValue)) { |
|
return; |
|
} |
|
|
|
if (attrValue) { |
|
attrValue = await 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(values) { |
|
var options = { |
|
name: function(name) { |
|
return name.toLowerCase(); |
|
}, |
|
canCollapseWhitespace: canCollapseWhitespace, |
|
canTrimWhitespace: canTrimWhitespace, |
|
html5: true, |
|
ignoreCustomComments: [ |
|
/^!/, |
|
/^\s*#/ |
|
], |
|
ignoreCustomFragments: [ |
|
/<%[\s\S]*?%>/, |
|
/<\?[\s\S]*?\?>/ |
|
], |
|
includeAutoGeneratedTags: true, |
|
log: identity, |
|
minifyCSS: identity, |
|
minifyJS: identity, |
|
minifyURLs: identity |
|
}; |
|
Object.keys(values).forEach(function(key) { |
|
var value = values[key]; |
|
if (key === 'caseSensitive') { |
|
if (value) { |
|
options.name = identity; |
|
} |
|
} |
|
else if (key === 'log') { |
|
if (typeof value === 'function') { |
|
options.log = value; |
|
} |
|
} |
|
else if (key === 'minifyCSS' && typeof value !== 'function') { |
|
if (!value) { |
|
return; |
|
} |
|
if (typeof value !== 'object') { |
|
value = {}; |
|
} |
|
options.minifyCSS = function(text, type) { |
|
text = text.replace(/(url\s*\(\s*)("|'|)(.*?)\2(\s*\))/ig, function(match, prefix, quote, url, suffix) { |
|
return prefix + quote + options.minifyURLs(url) + quote + suffix; |
|
}); |
|
var cleanCssOutput = new CleanCSS(value).minify(wrapCSS(text, type)); |
|
if (cleanCssOutput.errors.length > 0) { |
|
cleanCssOutput.errors.forEach(options.log); |
|
return text; |
|
} |
|
return unwrapCSS(cleanCssOutput.styles, type); |
|
}; |
|
} |
|
else if (key === 'minifyJS' && typeof value !== 'function') { |
|
if (!value) { |
|
return; |
|
} |
|
if (typeof value !== 'object') { |
|
value = {}; |
|
} |
|
(value.parse || (value.parse = {})).bare_returns = false; |
|
options.minifyJS = async function(text, inline) { |
|
var start = text.match(/^\s*<!--.*/); |
|
var code = start ? text.slice(start[0].length).replace(/\n\s*-->\s*$/, '') : text; |
|
value.parse.bare_returns = inline; |
|
try { |
|
const result = await Terser.minify(code, value); |
|
return result.code.replace(/;$/, ''); |
|
} |
|
catch (error) { |
|
options.log(error); |
|
return text; |
|
} |
|
}; |
|
} |
|
else if (key === 'minifyURLs' && typeof value !== 'function') { |
|
if (!value) { |
|
return; |
|
} |
|
if (typeof value === 'string') { |
|
value = { site: value }; |
|
} |
|
else if (typeof value !== 'object') { |
|
value = {}; |
|
} |
|
options.minifyURLs = function(text) { |
|
try { |
|
return RelateUrl.relate(text, value); |
|
} |
|
catch (err) { |
|
options.log(err); |
|
return text; |
|
} |
|
}; |
|
} |
|
else { |
|
options[key] = value; |
|
} |
|
}); |
|
return options; |
|
} |
|
|
|
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'); |
|
|
|
async 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.name(attr.name); |
|
}); |
|
} |
|
|
|
function shouldSkipUID(token, uid) { |
|
return !uid || token.indexOf(uid) === -1; |
|
} |
|
|
|
function shouldSkipUIDs(token) { |
|
return shouldSkipUID(token, uidIgnore) && shouldSkipUID(token, uidAttr); |
|
} |
|
|
|
async function scan(input) { |
|
var currentTag, currentType; |
|
const parser = 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 && attr.value && options.name(attr.name) === 'class') { |
|
classChain.add(trimWhitespace(attr.value).split(/[ \t\n\f\r]+/).filter(shouldSkipUIDs)); |
|
} |
|
else if (options.processScripts && attr.name.toLowerCase() === 'type') { |
|
currentTag = tag; |
|
currentType = attr.value; |
|
} |
|
} |
|
}, |
|
end: function() { |
|
currentTag = ''; |
|
}, |
|
chars: async function(text) { |
|
if (options.processScripts && specialContentTags(currentTag) && |
|
options.processScripts.indexOf(currentType) > -1) { |
|
await scan(text); |
|
} |
|
} |
|
}); |
|
|
|
await parser.parse(); |
|
} |
|
|
|
var log = options.log; |
|
options.log = identity; |
|
options.sortAttributes = false; |
|
options.sortClassName = false; |
|
await scan(await 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(/[ \n\f\r]+/)).join(' '); |
|
}; |
|
} |
|
} |
|
|
|
async function minify(value, options, partialMarkup) { |
|
if (options.collapseWhitespace) { |
|
value = collapseWhitespace(value, options, true, true); |
|
} |
|
|
|
var buffer = [], |
|
charsPrevTag, |
|
currentChars = '', |
|
hasChars, |
|
currentTag = '', |
|
currentAttrs = [], |
|
stackNoTrimWhitespace = [], |
|
stackNoCollapseWhitespace = [], |
|
optionalStartTag = '', |
|
optionalEndTag = '', |
|
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 = options.ignoreCustomComments.slice(); |
|
} |
|
else { |
|
options.ignoreCustomComments = []; |
|
} |
|
options.ignoreCustomComments.push(pattern); |
|
} |
|
var token = '<!--' + uidIgnore + ignoredMarkupChunks.length + '-->'; |
|
ignoredMarkupChunks.push(group1); |
|
return token; |
|
}); |
|
|
|
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]+)' + uidAttr + '(\\s*)', 'g'); |
|
if (options.minifyCSS) { |
|
options.minifyCSS = (function(fn) { |
|
return function(text, type) { |
|
text = text.replace(uidPattern, function(match, prefix, index) { |
|
var chunks = ignoredCustomMarkupChunks[+index]; |
|
return chunks[1] + uidAttr + index + uidAttr + chunks[2]; |
|
}); |
|
var ids = []; |
|
new CleanCSS().minify(wrapCSS(text, type)).warnings.forEach(function(warning) { |
|
var match = uidPattern.exec(warning); |
|
if (match) { |
|
var id = uidAttr + match[2] + uidAttr; |
|
text = text.replace(id, ignoreCSS(id)); |
|
ids.push(id); |
|
} |
|
}); |
|
text = fn(text, type); |
|
ids.forEach(function(id) { |
|
text = text.replace(ignoreCSS(id), id); |
|
}); |
|
return text; |
|
}; |
|
})(options.minifyCSS); |
|
} |
|
if (options.minifyJS) { |
|
options.minifyJS = (function(fn) { |
|
return function(text, type) { |
|
return fn(text.replace(uidPattern, function(match, prefix, index) { |
|
var chunks = ignoredCustomMarkupChunks[+index]; |
|
return chunks[1] + uidAttr + index + uidAttr + chunks[2]; |
|
}), type); |
|
}; |
|
})(options.minifyJS); |
|
} |
|
} |
|
var token = uidAttr + ignoredCustomMarkupChunks.length + uidAttr; |
|
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') { |
|
await createSortFns(value, options, uidIgnore, uidAttr); |
|
} |
|
|
|
function _canCollapseWhitespace(tag, attrs) { |
|
return options.canCollapseWhitespace(tag, attrs, canCollapseWhitespace); |
|
} |
|
|
|
function _canTrimWhitespace(tag, attrs) { |
|
return options.canTrimWhitespace(tag, attrs, canTrimWhitespace); |
|
} |
|
|
|
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); |
|
} |
|
|
|
const parser = new HTMLParser(value, { |
|
partialMarkup: partialMarkup, |
|
continueOnParseError: options.continueOnParseError, |
|
customAttrAssign: options.customAttrAssign, |
|
customAttrSurround: options.customAttrSurround, |
|
html5: options.html5, |
|
|
|
start: async function(tag, attrs, unary, unarySlash, autoGenerated) { |
|
if (tag.toLowerCase() === 'svg') { |
|
options = Object.create(options); |
|
options.caseSensitive = true; |
|
options.keepClosingSlash = true; |
|
options.name = identity; |
|
} |
|
tag = options.name(tag); |
|
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 (!unary) { |
|
if (!_canTrimWhitespace(tag, attrs) || stackNoTrimWhitespace.length) { |
|
stackNoTrimWhitespace.push(tag); |
|
} |
|
if (!_canCollapseWhitespace(tag, attrs) || stackNoCollapseWhitespace.length) { |
|
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 = await 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) { |
|
if (tag.toLowerCase() === 'svg') { |
|
options = Object.getPrototypeOf(options); |
|
} |
|
tag = options.name(tag); |
|
|
|
// 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: async 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 = await processScript(text, options, currentAttrs); |
|
} |
|
if (isExecutableScript(currentTag, currentAttrs)) { |
|
text = await 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)) { |
|
// Escape any `&` symbols that start either: |
|
// 1) a legacy named character reference (i.e. one that doesn't end with `;`) |
|
// 2) or any other character reference (i.e. one that does end with `;`) |
|
// Note that `&` can be escaped as `&`, without the semi-colon. |
|
// https://mathiasbynens.be/notes/ambiguous-ampersands |
|
text = text.replace(/&((?:Iacute|aacute|uacute|plusmn|Otilde|otilde|agrave|Agrave|Yacute|yacute|Oslash|oslash|atilde|Atilde|brvbar|ccedil|Ccedil|Ograve|curren|divide|eacute|Eacute|ograve|Oacute|egrave|Egrave|Ugrave|frac12|frac14|frac34|ugrave|oacute|iacute|Ntilde|ntilde|Uacute|middot|igrave|Igrave|iquest|Aacute|cedil|laquo|micro|iexcl|Icirc|icirc|acirc|Ucirc|Ecirc|ocirc|Ocirc|ecirc|ucirc|Aring|aring|AElig|aelig|acute|pound|raquo|Acirc|times|THORN|szlig|thorn|COPY|auml|ordf|ordm|Uuml|macr|uuml|Auml|ouml|Ouml|para|nbsp|euml|quot|QUOT|Euml|yuml|cent|sect|copy|sup1|sup2|sup3|iuml|Iuml|ETH|shy|reg|not|yen|amp|AMP|REG|uml|eth|deg|gt|GT|LT|lt)(?!;)|(?:#?[0-9a-zA-Z]+;))/g, '&$1').replace(/</g, '<'); |
|
} |
|
if (uidPattern && options.collapseWhitespace && stackNoTrimWhitespace.length) { |
|
text = text.replace(uidPattern, function(match, prefix, index) { |
|
return ignoredCustomMarkupChunks[+index][0]; |
|
}); |
|
} |
|
currentChars += text; |
|
if (text) { |
|
hasChars = true; |
|
} |
|
buffer.push(text); |
|
}, |
|
comment: async function(text, nonStandard) { |
|
var prefix = nonStandard ? '<!' : '<!--'; |
|
var suffix = nonStandard ? '>' : '-->'; |
|
if (isConditionalComment(text)) { |
|
text = prefix + await 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' + |
|
(options.removeTagWhitespace ? '' : ' ') + 'html>' : |
|
collapseWhitespaceAll(doctype)); |
|
} |
|
}); |
|
|
|
await parser.parse(); |
|
|
|
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'); |
|
} |
|
|
|
return joinResultSegments(buffer, options, uidPattern ? function(str) { |
|
return 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 |
|
}, /^[ \n\r\t\f]/.test(chunk), /[ \n\r\t\f]$/.test(chunk)); |
|
} |
|
return chunk; |
|
}); |
|
} : identity, uidIgnore ? function(str) { |
|
return str.replace(new RegExp('<!--' + uidIgnore + '([0-9]+)-->', 'g'), function(match, index) { |
|
return ignoredMarkupChunks[+index]; |
|
}); |
|
} : identity); |
|
} |
|
|
|
function joinResultSegments(results, options, restoreCustom, restoreIgnore) { |
|
var str; |
|
var maxLineLength = options.maxLineLength; |
|
var noNewlinesBeforeTagClose = options.noNewlinesBeforeTagClose; |
|
|
|
if (maxLineLength) { |
|
var line = '', lines = []; |
|
while (results.length) { |
|
var len = line.length; |
|
var end = results[0].indexOf('\n'); |
|
var isClosingTag = Boolean(results[0].match(endTag)); |
|
var shouldKeepSameLine = noNewlinesBeforeTagClose && isClosingTag; |
|
if (end < 0) { |
|
line += restoreIgnore(restoreCustom(results.shift())); |
|
} |
|
else { |
|
line += restoreIgnore(restoreCustom(results[0].slice(0, end))); |
|
results[0] = results[0].slice(end + 1); |
|
} |
|
if (len > 0 && line.length > maxLineLength && !shouldKeepSameLine) { |
|
lines.push(line.slice(0, len)); |
|
line = line.slice(len); |
|
} |
|
else if (end >= 0) { |
|
lines.push(line); |
|
line = ''; |
|
} |
|
} |
|
if (line) { |
|
lines.push(line); |
|
} |
|
str = lines.join('\n'); |
|
} |
|
else { |
|
str = restoreIgnore(restoreCustom(results.join(''))); |
|
} |
|
return options.collapseWhitespace ? collapseWhitespace(str, options, true, true) : str; |
|
} |
|
|
|
exports.minify = async function(value, options) { |
|
var start = Date.now(); |
|
options = processOptions(options || {}); |
|
var result = await minify(value, options); |
|
options.log('minified in: ' + (Date.now() - start) + 'ms'); |
|
return result; |
|
};
|
|
|