261 lines
7.8 KiB
JavaScript
Executable File
261 lines
7.8 KiB
JavaScript
Executable File
define(function(require, exports, module) {
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'use strict';
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var XMLReader = require('./sax'),
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DOMImplementation = require('./dom');
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function DOMParser(options){
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this.options = options ||{locator:{}};
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}
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DOMParser.prototype.parseFromString = function(source,mimeType){
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var options = this.options;
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var sax = new XMLReader();
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var domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler
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var errorHandler = options.errorHandler;
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var locator = options.locator;
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var defaultNSMap = options.xmlns||{};
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var entityMap = {'lt':'<','gt':'>','amp':'&','quot':'"','apos':"'"}
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if(locator){
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domBuilder.setDocumentLocator(locator)
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}
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sax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator);
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sax.domBuilder = options.domBuilder || domBuilder;
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if(/\/x?html?$/.test(mimeType)){
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entityMap.nbsp = '\xa0';
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entityMap.copy = '\xa9';
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defaultNSMap['']= 'http://www.w3.org/1999/xhtml';
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}
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if(source){
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sax.parse(source,defaultNSMap,entityMap);
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}else{
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sax.errorHandler.error("invalid document source");
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}
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return domBuilder.document;
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}
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function buildErrorHandler(errorImpl,domBuilder,locator){
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if(!errorImpl){
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if(domBuilder instanceof DOMHandler){
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return domBuilder;
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}
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errorImpl = domBuilder ;
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}
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var errorHandler = {}
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var isCallback = errorImpl instanceof Function;
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locator = locator||{}
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function build(key){
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var fn = errorImpl[key];
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if(!fn){
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if(isCallback){
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fn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl;
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}else{
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var i=arguments.length;
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while(--i){
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if(fn = errorImpl[arguments[i]]){
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break;
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}
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}
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}
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}
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errorHandler[key] = fn && function(msg){
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fn(msg+_locator(locator), msg, locator);
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}||function(){};
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}
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build('warning','warn');
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build('error','warn','warning');
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build('fatalError','warn','warning','error');
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return errorHandler;
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}
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/**
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* +ContentHandler+ErrorHandler
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* +LexicalHandler+EntityResolver2
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* -DeclHandler-DTDHandler
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*
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* DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler
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* DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2
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* @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html
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*/
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function DOMHandler() {
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this.cdata = false;
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}
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function position(locator,node){
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node.lineNumber = locator.lineNumber;
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node.columnNumber = locator.columnNumber;
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}
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/**
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* @see org.xml.sax.ContentHandler#startDocument
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* @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html
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*/
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DOMHandler.prototype = {
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startDocument : function() {
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this.document = new DOMImplementation().createDocument(null, null, null);
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if (this.locator) {
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this.document.documentURI = this.locator.systemId;
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}
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},
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startElement:function(namespaceURI, localName, qName, attrs) {
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var doc = this.document;
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var el = doc.createElementNS(namespaceURI, qName||localName);
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var len = attrs.length;
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appendElement(this, el);
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this.currentElement = el;
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this.locator && position(this.locator,el)
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for (var i = 0 ; i < len; i++) {
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var namespaceURI = attrs.getURI(i);
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var value = attrs.getValue(i);
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var qName = attrs.getQName(i);
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var attr = doc.createAttributeNS(namespaceURI, qName);
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if( attr.getOffset){
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position(attr.getOffset(1),attr)
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}
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attr.value = attr.nodeValue = value;
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el.setAttributeNode(attr)
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}
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},
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endElement:function(namespaceURI, localName, qName) {
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var current = this.currentElement
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var tagName = current.tagName;
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this.currentElement = current.parentNode;
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},
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startPrefixMapping:function(prefix, uri) {
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},
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endPrefixMapping:function(prefix) {
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},
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processingInstruction:function(target, data) {
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var ins = this.document.createProcessingInstruction(target, data);
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this.locator && position(this.locator,ins)
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appendElement(this, ins);
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},
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ignorableWhitespace:function(ch, start, length) {
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},
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characters:function(chars, start, length) {
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chars = _toString.apply(this,arguments)
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//console.log(chars)
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if(this.currentElement && chars){
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if (this.cdata) {
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var charNode = this.document.createCDATASection(chars);
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this.currentElement.appendChild(charNode);
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} else {
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var charNode = this.document.createTextNode(chars);
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this.currentElement.appendChild(charNode);
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}
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this.locator && position(this.locator,charNode)
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}
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},
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skippedEntity:function(name) {
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},
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endDocument:function() {
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this.document.normalize();
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},
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setDocumentLocator:function (locator) {
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if(this.locator = locator){// && !('lineNumber' in locator)){
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locator.lineNumber = 0;
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}
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},
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//LexicalHandler
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comment:function(chars, start, length) {
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chars = _toString.apply(this,arguments)
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var comm = this.document.createComment(chars);
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this.locator && position(this.locator,comm)
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appendElement(this, comm);
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},
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startCDATA:function() {
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//used in characters() methods
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this.cdata = true;
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},
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endCDATA:function() {
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this.cdata = false;
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},
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startDTD:function(name, publicId, systemId) {
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var impl = this.document.implementation;
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if (impl && impl.createDocumentType) {
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var dt = impl.createDocumentType(name, publicId, systemId);
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this.locator && position(this.locator,dt)
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appendElement(this, dt);
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}
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},
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/**
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* @see org.xml.sax.ErrorHandler
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* @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
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*/
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warning:function(error) {
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console.warn(error,_locator(this.locator));
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},
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error:function(error) {
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console.error(error,_locator(this.locator));
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},
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fatalError:function(error) {
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console.error(error,_locator(this.locator));
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throw error;
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}
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}
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function _locator(l){
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if(l){
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return '\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']'
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}
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}
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function _toString(chars,start,length){
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if(typeof chars == 'string'){
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return chars.substr(start,length)
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}else{//java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)")
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if(chars.length >= start+length || start){
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return new java.lang.String(chars,start,length)+'';
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}
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return chars;
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}
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}
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/*
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* @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html
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* used method of org.xml.sax.ext.LexicalHandler:
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* #comment(chars, start, length)
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* #startCDATA()
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* #endCDATA()
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* #startDTD(name, publicId, systemId)
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*
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*
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* IGNORED method of org.xml.sax.ext.LexicalHandler:
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* #endDTD()
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* #startEntity(name)
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* #endEntity(name)
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*
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*
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* @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html
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* IGNORED method of org.xml.sax.ext.DeclHandler
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* #attributeDecl(eName, aName, type, mode, value)
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* #elementDecl(name, model)
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* #externalEntityDecl(name, publicId, systemId)
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* #internalEntityDecl(name, value)
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* @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html
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* IGNORED method of org.xml.sax.EntityResolver2
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* #resolveEntity(String name,String publicId,String baseURI,String systemId)
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* #resolveEntity(publicId, systemId)
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* #getExternalSubset(name, baseURI)
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* @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html
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* IGNORED method of org.xml.sax.DTDHandler
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* #notationDecl(name, publicId, systemId) {};
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* #unparsedEntityDecl(name, publicId, systemId, notationName) {};
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*/
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"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g,function(key){
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DOMHandler.prototype[key] = function(){return null}
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})
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/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */
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function appendElement (hander,node) {
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if (!hander.currentElement) {
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hander.document.appendChild(node);
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} else {
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hander.currentElement.appendChild(node);
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}
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}//appendChild and setAttributeNS are preformance key
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return {
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DOMParser: DOMParser
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};
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});
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