163 lines
4.7 KiB
JavaScript
163 lines
4.7 KiB
JavaScript
'use strict';
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var defaultTreeAdapter = require('../tree_adapters/default'),
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mergeOptions = require('../utils/merge_options'),
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doctype = require('../common/doctype'),
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HTML = require('../common/html');
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//Aliases
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var $ = HTML.TAG_NAMES,
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NS = HTML.NAMESPACES;
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//Default serializer options
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var DEFAULT_OPTIONS = {
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treeAdapter: defaultTreeAdapter
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};
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//Escaping regexes
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var AMP_REGEX = /&/g,
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NBSP_REGEX = /\u00a0/g,
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DOUBLE_QUOTE_REGEX = /"/g,
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LT_REGEX = /</g,
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GT_REGEX = />/g;
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//Serializer
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var Serializer = module.exports = function (node, options) {
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this.options = mergeOptions(DEFAULT_OPTIONS, options);
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this.treeAdapter = this.options.treeAdapter;
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this.html = '';
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this.startNode = node;
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};
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// NOTE: exported as static method for the testing purposes
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Serializer.escapeString = function (str, attrMode) {
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str = str
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.replace(AMP_REGEX, '&')
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.replace(NBSP_REGEX, ' ');
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if (attrMode)
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str = str.replace(DOUBLE_QUOTE_REGEX, '"');
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else {
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str = str
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.replace(LT_REGEX, '<')
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.replace(GT_REGEX, '>');
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}
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return str;
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};
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//API
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Serializer.prototype.serialize = function () {
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this._serializeChildNodes(this.startNode);
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return this.html;
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};
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//Internals
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Serializer.prototype._serializeChildNodes = function (parentNode) {
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var childNodes = this.treeAdapter.getChildNodes(parentNode);
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if (childNodes) {
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for (var i = 0, cnLength = childNodes.length; i < cnLength; i++) {
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var currentNode = childNodes[i];
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if (this.treeAdapter.isElementNode(currentNode))
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this._serializeElement(currentNode);
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else if (this.treeAdapter.isTextNode(currentNode))
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this._serializeTextNode(currentNode);
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else if (this.treeAdapter.isCommentNode(currentNode))
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this._serializeCommentNode(currentNode);
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else if (this.treeAdapter.isDocumentTypeNode(currentNode))
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this._serializeDocumentTypeNode(currentNode);
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}
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}
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};
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Serializer.prototype._serializeElement = function (node) {
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var tn = this.treeAdapter.getTagName(node),
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ns = this.treeAdapter.getNamespaceURI(node);
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this.html += '<' + tn;
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this._serializeAttributes(node);
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this.html += '>';
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if (tn !== $.AREA && tn !== $.BASE && tn !== $.BASEFONT && tn !== $.BGSOUND && tn !== $.BR && tn !== $.BR &&
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tn !== $.COL && tn !== $.EMBED && tn !== $.FRAME && tn !== $.HR && tn !== $.IMG && tn !== $.INPUT &&
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tn !== $.KEYGEN && tn !== $.LINK && tn !== $.MENUITEM && tn !== $.META && tn !== $.PARAM && tn !== $.SOURCE &&
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tn !== $.TRACK && tn !== $.WBR) {
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var childNodesHolder = tn === $.TEMPLATE && ns === NS.HTML ?
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this.treeAdapter.getTemplateContent(node) :
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node;
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this._serializeChildNodes(childNodesHolder);
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this.html += '</' + tn + '>';
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}
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};
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Serializer.prototype._serializeAttributes = function (node) {
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var attrs = this.treeAdapter.getAttrList(node);
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for (var i = 0, attrsLength = attrs.length; i < attrsLength; i++) {
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var attr = attrs[i],
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value = Serializer.escapeString(attr.value, true);
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this.html += ' ';
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if (!attr.namespace)
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this.html += attr.name;
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else if (attr.namespace === NS.XML)
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this.html += 'xml:' + attr.name;
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else if (attr.namespace === NS.XMLNS) {
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if (attr.name !== 'xmlns')
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this.html += 'xmlns:';
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this.html += attr.name;
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}
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else if (attr.namespace === NS.XLINK)
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this.html += 'xlink:' + attr.name;
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else
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this.html += attr.namespace + ':' + attr.name;
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this.html += '="' + value + '"';
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}
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};
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Serializer.prototype._serializeTextNode = function (node) {
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var content = this.treeAdapter.getTextNodeContent(node),
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parent = this.treeAdapter.getParentNode(node),
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parentTn = void 0;
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if (parent && this.treeAdapter.isElementNode(parent))
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parentTn = this.treeAdapter.getTagName(parent);
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if (parentTn === $.STYLE || parentTn === $.SCRIPT || parentTn === $.XMP || parentTn === $.IFRAME ||
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parentTn === $.NOEMBED || parentTn === $.NOFRAMES || parentTn === $.PLAINTEXT || parentTn === $.NOSCRIPT)
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this.html += content;
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else
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this.html += Serializer.escapeString(content, false);
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};
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Serializer.prototype._serializeCommentNode = function (node) {
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this.html += '<!--' + this.treeAdapter.getCommentNodeContent(node) + '-->';
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};
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Serializer.prototype._serializeDocumentTypeNode = function (node) {
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var name = this.treeAdapter.getDocumentTypeNodeName(node);
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this.html += '<' + doctype.serializeContent(name, null, null) + '>';
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};
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