diff options
Diffstat (limited to 'node_modules/html-minifier/src/htmlparser.js')
| -rw-r--r-- | node_modules/html-minifier/src/htmlparser.js | 563 |
1 files changed, 563 insertions, 0 deletions
diff --git a/node_modules/html-minifier/src/htmlparser.js b/node_modules/html-minifier/src/htmlparser.js new file mode 100644 index 00000000..ccd6d4e7 --- /dev/null +++ b/node_modules/html-minifier/src/htmlparser.js @@ -0,0 +1,563 @@ +/*! + * HTML Parser By John Resig (ejohn.org) + * Modified by Juriy "kangax" Zaytsev + * Original code by Erik Arvidsson, Mozilla Public License + * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js + */ + +/* + * // Use like so: + * HTMLParser(htmlString, { + * start: function(tag, attrs, unary) {}, + * end: function(tag) {}, + * chars: function(text) {}, + * comment: function(text) {} + * }); + * + * // or to get an XML string: + * HTMLtoXML(htmlString); + * + * // or to get an XML DOM Document + * HTMLtoDOM(htmlString); + * + * // or to inject into an existing document/DOM node + * HTMLtoDOM(htmlString, document); + * HTMLtoDOM(htmlString, document.body); + * + */ + +/* global ActiveXObject, DOMDocument */ + +'use strict'; + +var createMapFromString = require('./utils').createMapFromString; + +function makeMap(values) { + return createMapFromString(values, true); +} + +// Regular Expressions for parsing tags and attributes +var singleAttrIdentifier = /([^\s"'<>/=]+)/, + singleAttrAssigns = [/=/], + singleAttrValues = [ + // attr value double quotes + /"([^"]*)"+/.source, + // attr value, single quotes + /'([^']*)'+/.source, + // attr value, no quotes + /([^ \t\n\f\r"'`=<>]+)/.source + ], + // https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName + qnameCapture = (function() { + // based on https://www.npmjs.com/package/ncname + var combiningChar = '\\u0300-\\u0345\\u0360\\u0361\\u0483-\\u0486\\u0591-\\u05A1\\u05A3-\\u05B9\\u05BB-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u064B-\\u0652\\u0670\\u06D6-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0901-\\u0903\\u093C\\u093E-\\u094D\\u0951-\\u0954\\u0962\\u0963\\u0981-\\u0983\\u09BC\\u09BE-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CD\\u09D7\\u09E2\\u09E3\\u0A02\\u0A3C\\u0A3E-\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A70\\u0A71\\u0A81-\\u0A83\\u0ABC\\u0ABE-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0B01-\\u0B03\\u0B3C\\u0B3E-\\u0B43\\u0B47\\u0B48\\u0B4B-\\u0B4D\\u0B56\\u0B57\\u0B82\\u0B83\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD7\\u0C01-\\u0C03\\u0C3E-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C82\\u0C83\\u0CBE-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5\\u0CD6\\u0D02\\u0D03\\u0D3E-\\u0D43\\u0D46-\\u0D48\\u0D4A-\\u0D4D\\u0D57\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F3E\\u0F3F\\u0F71-\\u0F84\\u0F86-\\u0F8B\\u0F90-\\u0F95\\u0F97\\u0F99-\\u0FAD\\u0FB1-\\u0FB7\\u0FB9\\u20D0-\\u20DC\\u20E1\\u302A-\\u302F\\u3099\\u309A'; + var digit = '0-9\\u0660-\\u0669\\u06F0-\\u06F9\\u0966-\\u096F\\u09E6-\\u09EF\\u0A66-\\u0A6F\\u0AE6-\\u0AEF\\u0B66-\\u0B6F\\u0BE7-\\u0BEF\\u0C66-\\u0C6F\\u0CE6-\\u0CEF\\u0D66-\\u0D6F\\u0E50-\\u0E59\\u0ED0-\\u0ED9\\u0F20-\\u0F29'; + var extender = '\\xB7\\u02D0\\u02D1\\u0387\\u0640\\u0E46\\u0EC6\\u3005\\u3031-\\u3035\\u309D\\u309E\\u30FC-\\u30FE'; + var letter = 'A-Za-z\\xC0-\\xD6\\xD8-\\xF6\\xF8-\\u0131\\u0134-\\u013E\\u0141-\\u0148\\u014A-\\u017E\\u0180-\\u01C3\\u01CD-\\u01F0\\u01F4\\u01F5\\u01FA-\\u0217\\u0250-\\u02A8\\u02BB-\\u02C1\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03CE\\u03D0-\\u03D6\\u03DA\\u03DC\\u03DE\\u03E0\\u03E2-\\u03F3\\u0401-\\u040C\\u040E-\\u044F\\u0451-\\u045C\\u045E-\\u0481\\u0490-\\u04C4\\u04C7\\u04C8\\u04CB\\u04CC\\u04D0-\\u04EB\\u04EE-\\u04F5\\u04F8\\u04F9\\u0531-\\u0556\\u0559\\u0561-\\u0586\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0621-\\u063A\\u0641-\\u064A\\u0671-\\u06B7\\u06BA-\\u06BE\\u06C0-\\u06CE\\u06D0-\\u06D3\\u06D5\\u06E5\\u06E6\\u0905-\\u0939\\u093D\\u0958-\\u0961\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8B\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AE0\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B36-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB5\\u0BB7-\\u0BB9\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CDE\\u0CE0\\u0CE1\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D28\\u0D2A-\\u0D39\\u0D60\\u0D61\\u0E01-\\u0E2E\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E45\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD\\u0EAE\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0F40-\\u0F47\\u0F49-\\u0F69\\u10A0-\\u10C5\\u10D0-\\u10F6\\u1100\\u1102\\u1103\\u1105-\\u1107\\u1109\\u110B\\u110C\\u110E-\\u1112\\u113C\\u113E\\u1140\\u114C\\u114E\\u1150\\u1154\\u1155\\u1159\\u115F-\\u1161\\u1163\\u1165\\u1167\\u1169\\u116D\\u116E\\u1172\\u1173\\u1175\\u119E\\u11A8\\u11AB\\u11AE\\u11AF\\u11B7\\u11B8\\u11BA\\u11BC-\\u11C2\\u11EB\\u11F0\\u11F9\\u1E00-\\u1E9B\\u1EA0-\\u1EF9\\u1F00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2126\\u212A\\u212B\\u212E\\u2180-\\u2182\\u3007\\u3021-\\u3029\\u3041-\\u3094\\u30A1-\\u30FA\\u3105-\\u312C\\u4E00-\\u9FA5\\uAC00-\\uD7A3'; + var ncname = '[' + letter + '_][' + letter + digit + '\\.\\-_' + combiningChar + extender + ']*'; + return '((?:' + ncname + '\\:)?' + ncname + ')'; + })(), + startTagOpen = new RegExp('^<' + qnameCapture), + startTagClose = /^\s*(\/?)>/, + endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>'), + doctype = /^<!DOCTYPE\s?[^>]+>/i; + +var IS_REGEX_CAPTURING_BROKEN = false; +'x'.replace(/x(.)?/g, function(m, g) { + IS_REGEX_CAPTURING_BROKEN = g === ''; +}); + +// Empty Elements +var empty = makeMap('area,base,basefont,br,col,embed,frame,hr,img,input,isindex,keygen,link,meta,param,source,track,wbr'); + +// Inline Elements +var inline = makeMap('a,abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,noscript,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,svg,textarea,tt,u,var'); + +// Elements that you can, intentionally, leave open +// (and which close themselves) +var closeSelf = makeMap('colgroup,dd,dt,li,option,p,td,tfoot,th,thead,tr,source'); + +// Attributes that have their values filled in disabled='disabled' +var fillAttrs = makeMap('checked,compact,declare,defer,disabled,ismap,multiple,nohref,noresize,noshade,nowrap,readonly,selected'); + +// Special Elements (can contain anything) +var special = makeMap('script,style'); + +// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3 +// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content +var nonPhrasing = makeMap('address,article,aside,base,blockquote,body,caption,col,colgroup,dd,details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,ol,optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,title,tr,track,ul'); + +var reCache = {}; + +function attrForHandler(handler) { + var pattern = singleAttrIdentifier.source + + '(?:\\s*(' + joinSingleAttrAssigns(handler) + ')' + + '[ \\t\\n\\f\\r]*(?:' + singleAttrValues.join('|') + '))?'; + if (handler.customAttrSurround) { + var attrClauses = []; + for (var i = handler.customAttrSurround.length - 1; i >= 0; i--) { + attrClauses[i] = '(?:' + + '(' + handler.customAttrSurround[i][0].source + ')\\s*' + + pattern + + '\\s*(' + handler.customAttrSurround[i][1].source + ')' + + ')'; + } + attrClauses.push('(?:' + pattern + ')'); + pattern = '(?:' + attrClauses.join('|') + ')'; + } + return new RegExp('^\\s*' + pattern); +} + +function joinSingleAttrAssigns(handler) { + return singleAttrAssigns.concat( + handler.customAttrAssign || [] + ).map(function(assign) { + return '(?:' + assign.source + ')'; + }).join('|'); +} + +function HTMLParser(html, handler) { + var stack = [], lastTag; + var attribute = attrForHandler(handler); + var last, prevTag, nextTag; + while (html) { + last = html; + // Make sure we're not in a script or style element + if (!lastTag || !special(lastTag)) { + var textEnd = html.indexOf('<'); + if (textEnd === 0) { + // Comment: + if (/^<!--/.test(html)) { + var commentEnd = html.indexOf('-->'); + + if (commentEnd >= 0) { + if (handler.comment) { + handler.comment(html.substring(4, commentEnd)); + } + html = html.substring(commentEnd + 3); + prevTag = ''; + continue; + } + } + + // https://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment + if (/^<!\[/.test(html)) { + var conditionalEnd = html.indexOf(']>'); + + if (conditionalEnd >= 0) { + if (handler.comment) { + handler.comment(html.substring(2, conditionalEnd + 1), true /* non-standard */); + } + html = html.substring(conditionalEnd + 2); + prevTag = ''; + continue; + } + } + + // Doctype: + var doctypeMatch = html.match(doctype); + if (doctypeMatch) { + if (handler.doctype) { + handler.doctype(doctypeMatch[0]); + } + html = html.substring(doctypeMatch[0].length); + prevTag = ''; + continue; + } + + // End tag: + var endTagMatch = html.match(endTag); + if (endTagMatch) { + html = html.substring(endTagMatch[0].length); + endTagMatch[0].replace(endTag, parseEndTag); + prevTag = '/' + endTagMatch[1].toLowerCase(); + continue; + } + + // Start tag: + var startTagMatch = parseStartTag(html); + if (startTagMatch) { + html = startTagMatch.rest; + handleStartTag(startTagMatch); + prevTag = startTagMatch.tagName.toLowerCase(); + continue; + } + } + + var text; + if (textEnd >= 0) { + text = html.substring(0, textEnd); + html = html.substring(textEnd); + } + else { + text = html; + html = ''; + } + + // next tag + var nextTagMatch = parseStartTag(html); + if (nextTagMatch) { + nextTag = nextTagMatch.tagName; + } + else { + nextTagMatch = html.match(endTag); + if (nextTagMatch) { + nextTag = '/' + nextTagMatch[1]; + } + else { + nextTag = ''; + } + } + + if (handler.chars) { + handler.chars(text, prevTag, nextTag); + } + prevTag = ''; + + } + else { + var stackedTag = lastTag.toLowerCase(); + var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)</' + stackedTag + '[^>]*>', 'i')); + + html = html.replace(reStackedTag, function(all, text) { + if (stackedTag !== 'script' && stackedTag !== 'style' && stackedTag !== 'noscript') { + text = text + .replace(/<!--([\s\S]*?)-->/g, '$1') + .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1'); + } + + if (handler.chars) { + handler.chars(text); + } + + return ''; + }); + + parseEndTag('</' + stackedTag + '>', stackedTag); + } + + if (html === last) { + throw new Error('Parse Error: ' + html); + } + } + + if (!handler.partialMarkup) { + // Clean up any remaining tags + parseEndTag(); + } + + function parseStartTag(input) { + var start = input.match(startTagOpen); + if (start) { + var match = { + tagName: start[1], + attrs: [] + }; + input = input.slice(start[0].length); + var end, attr; + while (!(end = input.match(startTagClose)) && (attr = input.match(attribute))) { + input = input.slice(attr[0].length); + match.attrs.push(attr); + } + if (end) { + match.unarySlash = end[1]; + match.rest = input.slice(end[0].length); + return match; + } + } + } + + function closeIfFound(tagName) { + if (findTag(tagName) >= 0) { + parseEndTag('', tagName); + return true; + } + } + + function handleStartTag(match) { + var tagName = match.tagName; + var unarySlash = match.unarySlash; + + if (handler.html5) { + if (lastTag === 'p' && nonPhrasing(tagName)) { + parseEndTag('', lastTag); + } + else if (tagName === 'tbody') { + closeIfFound('thead'); + } + else if (tagName === 'tfoot') { + if (!closeIfFound('tbody')) { + closeIfFound('thead'); + } + } + if (tagName === 'col' && findTag('colgroup') < 0) { + lastTag = 'colgroup'; + stack.push({ tag: lastTag, attrs: [] }); + if (handler.start) { + handler.start(lastTag, [], false, ''); + } + } + } + + if (!handler.html5 && !inline(tagName)) { + while (lastTag && inline(lastTag)) { + parseEndTag('', lastTag); + } + } + + if (closeSelf(tagName) && lastTag === tagName) { + parseEndTag('', tagName); + } + + var unary = empty(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash; + + var attrs = match.attrs.map(function(args) { + var name, value, customOpen, customClose, customAssign, quote; + var ncp = 7; // number of captured parts, scalar + + // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778 + if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) { + if (args[3] === '') { delete args[3]; } + if (args[4] === '') { delete args[4]; } + if (args[5] === '') { delete args[5]; } + } + + function populate(index) { + customAssign = args[index]; + value = args[index + 1]; + if (typeof value !== 'undefined') { + return '"'; + } + value = args[index + 2]; + if (typeof value !== 'undefined') { + return '\''; + } + value = args[index + 3]; + if (typeof value === 'undefined' && fillAttrs(name)) { + value = name; + } + return ''; + } + + var j = 1; + if (handler.customAttrSurround) { + for (var i = 0, l = handler.customAttrSurround.length; i < l; i++, j += ncp) { + name = args[j + 1]; + if (name) { + quote = populate(j + 2); + customOpen = args[j]; + customClose = args[j + 6]; + break; + } + } + } + + if (!name && (name = args[j])) { + quote = populate(j + 1); + } + + return { + name: name, + value: value, + customAssign: customAssign || '=', + customOpen: customOpen || '', + customClose: customClose || '', + quote: quote || '' + }; + }); + + if (!unary) { + stack.push({ tag: tagName, attrs: attrs }); + lastTag = tagName; + unarySlash = ''; + } + + if (handler.start) { + handler.start(tagName, attrs, unary, unarySlash); + } + } + + function findTag(tagName) { + var pos; + var needle = tagName.toLowerCase(); + for (pos = stack.length - 1; pos >= 0; pos--) { + if (stack[pos].tag.toLowerCase() === needle) { + break; + } + } + return pos; + } + + function parseEndTag(tag, tagName) { + var pos; + + // Find the closest opened tag of the same type + if (tagName) { + pos = findTag(tagName); + } + // If no tag name is provided, clean shop + else { + pos = 0; + } + + if (pos >= 0) { + // Close all the open elements, up the stack + for (var i = stack.length - 1; i >= pos; i--) { + if (handler.end) { + handler.end(stack[i].tag, stack[i].attrs, i > pos || !tag); + } + } + + // Remove the open elements from the stack + stack.length = pos; + lastTag = pos && stack[pos - 1].tag; + } + else if (tagName.toLowerCase() === 'br') { + if (handler.start) { + handler.start(tagName, [], true, ''); + } + } + else if (tagName.toLowerCase() === 'p') { + if (handler.start) { + handler.start(tagName, [], false, '', true); + } + if (handler.end) { + handler.end(tagName, []); + } + } + } +} + +exports.HTMLParser = HTMLParser; +exports.HTMLtoXML = function(html) { + var results = ''; + + new HTMLParser(html, { + start: function(tag, attrs, unary) { + results += '<' + tag; + + for (var i = 0, len = attrs.length; i < len; i++) { + results += ' ' + attrs[i].name + '="' + (attrs[i].value || '').replace(/"/g, '"') + '"'; + } + + results += (unary ? '/' : '') + '>'; + }, + end: function(tag) { + results += '</' + tag + '>'; + }, + chars: function(text) { + results += text; + }, + comment: function(text) { + results += '<!--' + text + '-->'; + }, + ignore: function(text) { + results += text; + } + }); + + return results; +}; + +exports.HTMLtoDOM = function(html, doc) { + // There can be only one of these elements + var one = { + html: true, + head: true, + body: true, + title: true + }; + + // Enforce a structure for the document + var structure = { + link: 'head', + base: 'head' + }; + + if (doc) { + doc = doc.ownerDocument || doc.getOwnerDocument && doc.getOwnerDocument() || doc; + } + else if (typeof DOMDocument !== 'undefined') { + doc = new DOMDocument(); + } + else if (typeof document !== 'undefined' && document.implementation && document.implementation.createDocument) { + doc = document.implementation.createDocument('', '', null); + } + else if (typeof ActiveX !== 'undefined') { + doc = new ActiveXObject('Msxml.DOMDocument'); + } + + var elems = [], + documentElement = doc.documentElement || + doc.getDocumentElement && doc.getDocumentElement(); + + // If we're dealing with an empty document then we + // need to pre-populate it with the HTML document structure + if (!documentElement && doc.createElement) { + (function() { + var html = doc.createElement('html'); + var head = doc.createElement('head'); + head.appendChild(doc.createElement('title')); + html.appendChild(head); + html.appendChild(doc.createElement('body')); + doc.appendChild(html); + })(); + } + + // Find all the unique elements + if (doc.getElementsByTagName) { + for (var i in one) { + one[i] = doc.getElementsByTagName(i)[0]; + } + } + + // If we're working with a document, inject contents into + // the body element + var curParentNode = one.body; + + new HTMLParser(html, { + start: function(tagName, attrs, unary) { + // If it's a pre-built element, then we can ignore + // its construction + if (one[tagName]) { + curParentNode = one[tagName]; + return; + } + + var elem = doc.createElement(tagName); + + for (var attr in attrs) { + elem.setAttribute(attrs[attr].name, attrs[attr].value); + } + + if (structure[tagName] && typeof one[structure[tagName]] !== 'boolean') { + one[structure[tagName]].appendChild(elem); + } + else if (curParentNode && curParentNode.appendChild) { + curParentNode.appendChild(elem); + } + + if (!unary) { + elems.push(elem); + curParentNode = elem; + } + }, + end: function(/* tag */) { + elems.length -= 1; + + // Init the new parentNode + curParentNode = elems[elems.length - 1]; + }, + chars: function(text) { + curParentNode.appendChild(doc.createTextNode(text)); + }, + comment: function(/* text */) { + // create comment node + }, + ignore: function(/* text */) { + // What to do here? + } + }); + + return doc; +}; |