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248 lines
8.7 KiB
JavaScript
248 lines
8.7 KiB
JavaScript
/*
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Copyright (c) 2003 Jan-Klaas Kollhof
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This file is part of the JavaScript o lait library(jsolait).
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jsolait is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this software; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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Provides parseXML and an importNode implementation.
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*/
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Module("xml","1.1.2", function(mod){
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/**
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Thrown if no parser could be instanciated.
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*/
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mod.NoXMLParser=Class("NoXMLParser", mod.Exception, function(publ, supr){
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/**
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Initializes the Exception.
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@param trace The error causing the Exception.
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*/
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publ.init=function(trace){
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supr(this).init("Could not create an XML parser.", trace);
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}
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})
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/**
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Thrown if a document could not be parsed.
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*/
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mod.ParsingFailed=Class("ParsingFailed", mod.Exception, function(publ, supr){
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/**
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Initializes the Exception.
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@param xml The xml source which could not be parsed.
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@param trace The error causing this Exception.
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*/
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publ.init=function(xml,trace){
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supr(this).init("Failed parsing XML document.",trace);
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this.xml = xml;
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}
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///The xml source which could not be parsed.
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publ.xml;
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})
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/**
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Parses an xml document.
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@param xml The xml text.
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@return A DOM of the xml document.
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*/
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mod.parseXML=function(xml){
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var obj=null;
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var isMoz=false;
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var isIE=false;
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var isASV=false;
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try{//to get Adobe's SVG parseXML
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var p=window.parseXML;
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if(p==null){
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throw "No ASV paseXML";
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}
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isASV=true;
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}catch(e){
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try{//to get the mozilla parser
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obj = new DOMParser();
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isMoz=true;
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}catch(e){
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try{//to get the MS XML parser
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obj = new ActiveXObject("Msxml2.DomDocument.4.0");
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isIE=true;
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}catch(e){
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try{//to get the MS XML parser
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obj = new ActiveXObject("Msxml2.DomDocument");
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isIE=true;
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}catch(e){
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try{//to get the old MS XML parser
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obj = new ActiveXObject("microsoft.XMLDOM");
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isIE=true;
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}catch(e){
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throw new mod.NoXMLParser(e);
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}
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}
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}
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}
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}
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try{
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if(isMoz){
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obj = obj.parseFromString(xml, "text/xml");
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return obj;
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}else if(isIE){
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obj.loadXML(xml);
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return obj;
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}else if(isASV){
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return window.parseXML(xml, null);
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}
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}catch(e){
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throw new mod.ParsingFailed(xml,e);
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}
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}
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/**
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DOM2 implimentation of document.importNode().
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This will import into the current document. In SVG it will create SVG nodes in HTML it will create HTML nodes....
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This might become customizable in the future.
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@param importedNode The node to import.
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@param deep=true Import all childNodes recursively.
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@return The imported Node.
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*/
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mod.importNode=function(importedNode, deep){
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deep = (deep==null) ? true : deep;
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//constants from doom2
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var ELEMENT_NODE = 1;
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var ATTRIBUTE_NODE = 2;
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var TEXT_NODE = 3;
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var CDATA_SECTION_NODE = 4;
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var ENTITY_REFERENCE_NODE = 5;
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var ENTITY_NODE = 6;
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var PROCESSING_INSTRUCTION_NODE = 7;
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var COMMENT_NODE = 8;
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var DOCUMENT_NODE = 9;
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var DOCUMENT_TYPE_NODE = 10;
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var DOCUMENT_FRAGMENT_NODE = 11;
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var NOTATION_NODE = 12;
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var importChildren=function(srcNode, parent){
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if(deep){
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for(var i=0; i<srcNode.childNodes.length; i++){
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var n=mod.importNode(srcNode.childNodes.item(i), true);
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parent.appendChild(n);
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}
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}
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}
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var node=null;
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switch(importedNode.nodeType){
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case ATTRIBUTE_NODE:
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node=document.createAttributeNS(importedNode.namespaceURI, importedNode.nodeName);
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node.value=importedNode.value;
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break;
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case DOCUMENT_FRAGMENT_NODE:
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node=document.createDocumentFragment();
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importChildren(importedNode,node);
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break;
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case ELEMENT_NODE:
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node=document.createElementNS(importedNode.namespaceURI, importedNode.tagName);
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//import all attributes
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for(var i=0; i<importedNode.attributes.length; i++){
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var attr=this.importNode(importedNode.attributes.item(i), deep);
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node.setAttributeNodeNS(attr);
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}
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importChildren(importedNode,node);
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break;
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case ENTITY_REFERENCE_NODE:
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node=importedNode;
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break;
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case PROCESSING_INSTRUCTION_NODE:
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node=document.createProcessingInstruction(importedNode.target, importedNode.data);
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break;
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case TEXT_NODE:
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case CDATA_SECTION_NODE:
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case COMMENT_NODE:
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node=document.createTextNode(importedNode.nodeValue);
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break;
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case DOCUMENT_NODE:
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//Document nodes cannot be imported.
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case DOCUMENT_TYPE_NODE:
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//DocumentType nodes cannot be imported.
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case NOTATION_NODE:
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//readonly in DOM2
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case ENTITY_NODE:
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//readonly in DOM2
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throw "not supported in DOM2";
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break;
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}
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return node;
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}
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/**
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Turns an XML document into a String.
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@param node The node to print.
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@return A string containing the text for the XML.
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*/
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mod.node2XML = function(node){
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var ELEMENT_NODE = 1;
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var ATTRIBUTE_NODE = 2;
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var TEXT_NODE = 3;
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var CDATA_SECTION_NODE = 4;
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var ENTITY_REFERENCE_NODE = 5;
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var ENTITY_NODE = 6;
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var PROCESSING_INSTRUCTION_NODE = 7;
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var COMMENT_NODE = 8;
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var DOCUMENT_NODE = 9;
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var DOCUMENT_TYPE_NODE = 10;
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var DOCUMENT_FRAGMENT_NODE = 11;
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var NOTATION_NODE = 12;
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var s="";
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switch(node.nodeType){
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case ATTRIBUTE_NODE:
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s+=node.nodeName+'="' + node.value + '"';
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break;
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case DOCUMENT_NODE:
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s+=this.node2XML(node.documentElement);
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break;
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case ELEMENT_NODE:
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s+="<" + node.tagName;
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//attributes
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for(var i=0; i<node.attributes.length; i++){
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s+=" " + this.node2XML(node.attributes.item(i));
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}
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//children
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if(node.childNodes.length==0){
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s+="/>\n";
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}else{
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s+=">";
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for(var i=0; i<node.childNodes.length; i++){
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s+=this.node2XML(node.childNodes.item(i));
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}
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s+="</" + node.tagName+ ">\n";
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}
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break;
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case PROCESSING_INSTRUCTION_NODE:
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s+="<?" + node.target + " " + node.data + " ?>";
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break;
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case TEXT_NODE:
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s+=node.nodeValue;
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break;
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case CDATA_SECTION_NODE:
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s+="<" +"![CDATA[" + node.nodeValue + "]" + "]>";
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break;
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case COMMENT_NODE:
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s+="<!--" + node.nodeValue + "-->";
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break;
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case ENTITY_REFERENCE_NODE:
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case DOCUMENT_FRAGMENT_NODE:
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case DOCUMENT_TYPE_NODE:
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case NOTATION_NODE:
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case ENTITY_NODE:
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throw new mod.Exception("Nodetype(%s) not supported.".format(node.nodeType));
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break;
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}
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return s;
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}
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})
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