127 lines
3.7 KiB
JavaScript
127 lines
3.7 KiB
JavaScript
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/**
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* Constructs a function which installs SAX handlers into a libxmljs.SaxParser
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* turning it into a DOM parser for the given doc.
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*
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* The function returned by this function will typically be used as the
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* argument of lixmljs.SaxParser Constructor.
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* <code>
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* var dom = require("jsdom").level(3, 'core'),
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* xml = require("libxmljs"),
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* domparser = require("./domparser.js");
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*
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* var doc = new dom.Document();
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* var parser = new xml.SaxParser(domparser.handlersForDocument(doc));
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* parser.parseFile('example.xml');
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* // doc is now populated with the contents of example.xml file
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* </code>
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*
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* @param doc A document instance implementing at least DOM Core Level 2.
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* @returns An object suitable for passing to the libxmljs.SaxParser and
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* libixmljs.PushParser constructors.
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*/
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exports.handlersForDocument = function(doc) {
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/** @private */
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var currentElement = doc;
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/** @private */
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var currentCharacters = '';
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/** @private */
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var currentCdata = '';
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/**
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* Add text node or CDATA section before starting or ending an element
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*/
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function flushData() {
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if (currentCharacters) {
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currentElement.appendChild(
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doc.createTextNode(currentCharacters));
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currentCharacters = '';
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}
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else if (currentCdata) {
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currentElement.appendChild(
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doc.createCDATASection(currentCdata));
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currentCdata = '';
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}
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}
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return {
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startDocument: function() {},
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endDocument: function() {},
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startElementNS: function(elem, attrs, prefix, uri, namespaces) {
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var element;
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// Finish preceeding text node or CDATA section if any.
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flushData();
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// Create element
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if (uri) {
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if (prefix) {
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element = doc.createElementNS(uri, prefix + ':' + elem);
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}
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else {
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element = doc.createElementNS(uri, elem);
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}
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}
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else {
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element = doc.createElementNS(null, elem);
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}
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// Add attributes
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attrs.forEach(function(inattr) {
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var attrLocalName = inattr[0];
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var attrPrefix = inattr[1];
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var attrUri = inattr[2];
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var attrValue = inattr[3];
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if (attrPrefix) {
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element.setAttributeNS(attrUri,
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attrPrefix + ':' + attrLocalName, attrValue);
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}
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else {
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element.setAttribute(attrLocalName, attrValue);
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}
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});
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// Add namespace attributes. Default namespace has prefix=='',
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// ignore it.
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namespaces.forEach(function(ns) {
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if (ns[0]) {
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element.setAttributeNS(
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'http://www.w3.org/2000/xmlns/',
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'xmlns:' + ns[0], ns[1]);
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}
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});
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currentElement.appendChild(element);
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currentElement = element;
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},
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endElementNS: function(elem, prefix, uri) {
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flushData();
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currentElement = currentElement.parentNode;
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},
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characters: function(chars) {
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currentCharacters += chars;
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},
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cdata: function(cdata) {
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currentCdata += cdata;
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},
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comment: function(comment) {
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currentElement.appendChild(doc.createComment(comment));
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},
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warning: function(msg) {
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// FIXME
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},
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error: function(msg) {
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// FIXME
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}
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};
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};
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