lite
Version:
A cross platform template engine base on xml/html and javascript expression.
260 lines (249 loc) • 8.62 kB
JavaScript
/*
* List Template
* License LGPL(您可以在任何地方免费使用,但请不要吝啬您对框架本身的改进)
* http://www.xidea.org/project/lite/
* @author jindw
* @version $Id: template.js,v 1.4 2008/02/28 14:39:06 jindw Exp $
*/
//import {XA_TYPE,EL_TYPE,XT_TYPE} from './template-token';
//export var XML_SPACE_TRIM = "http://www.xidea.org/lite/attribute/h:trim-space"
//export
var XA_TYPE = require('./template-token').XA_TYPE;
var EL_TYPE = require('./template-token').EL_TYPE;
var XT_TYPE = require('./template-token').XT_TYPE;
var Expression=require('js-el').Expression;
var XML_SPACE_TRIM =exports.XML_SPACE_TRIM = "http://www.xidea.org/lite/attribute/h:trim-space"
var XML_SPACE_ONELINE = exports.XML_SPACE_ONELINE = "http://www.xidea.org/lite/attribute/h:space-oneline"
exports.parseDefaultXMLNode = parseDefaultXMLNode;
function parseDefaultXMLNode(node,context,chain){
//try{
switch(node.nodeType){
case 1: //NODE_ELEMENT
processElement(node,context,chain)
break;
case 2: //NODE_ATTRIBUTE
processAttribute(node,context,chain)
break;
case 3: //NODE_TEXT
processTextNode(node,context,chain)
break;
case 4: //NODE_CDATA_SECTION
processCDATA(node,context,chain)
break;
case 5: //NODE_ENTITY_REFERENCE
processEntityReference(node,context,chain)
break;
case 6: //NODE_ENTITY
processEntity(node,context,chain)
break;
case 7: //NODE_PROCESSING_INSTRUCTION
processProcessingInstruction(node,context,chain)
break;
case 8: //NODE_COMMENT
processComment(node,context,chain)
break;
case 9: //NODE_DOCUMENT
case 11://NODE_DOCUMENT_FRAGMENT
processDocument(node,context,chain)
break;
case 10://NODE_DOCUMENT_TYPE
processDocumentType(node,context,chain)
// case 11://NODE_DOCUMENT_FRAGMENT
// processDocumentFragment(node,context,chain)
break;
case 12://NODE_NOTATION
processNotation(node,context,chain);
break;
default://文本节点
chain.next(node);
//this.println("<!-- ERROR： UNKNOW nodeType:"+node.nodeType+"-->")
}
//}catch(e){
// console.error('default xml node parse error:'+e);
//}
}
var htmlLeaf = /^(?:meta|link|img|br|hr|input)$/i;
var htmlReserved = /^(?:script|style|pre|textarea)$/i
var scriptTag = /^script$/i
function processElement(node,context,chain){
var attributes = node.attributes;
var tagName = node.tagName;
context.appendText('<'+tagName);
for (var i=0; i<attributes.length; i++) {
try{
//htmlunit bug...
var attr = attributes.item(i);
}catch(e){
var attr =attributes[i];
}
context.parse(attr)
}
if(htmlLeaf.test(tagName)){
context.appendText('/>')
return ;
}
context.appendText('>')
var child = node.firstChild
if(child){
///if(htmlReserved.test(tagName)){
// context.setReservedSpace(true)
//}
do{
context.parse(child)
}while(child = child.nextSibling)
}
context.appendText('</'+node.tagName+'>')
}
//parser attribute
function processAttribute(node,context,chain){
var name = String(node.name);
var value = String(node.value);
var buf = context.parseText(value,XA_TYPE);
var isStatic;
var isDynamic;
//hack context.parseText is void
var i = buf.length;
while(i--){
//hack reuse value param
var value = buf[i];
if(value.constructor == String){
if(value){
isStatic = true;
}else{
buf.splice(i,1);
}
}else{
isDynamic = true;
}
}
if(isDynamic && !isStatic){
//remove attribute;
//context.appendText(" "+name+"=''");
if(buf.length > 1){
for(var i = 0;i<buf.length;i++){
if(buf[i][0] == XA_TYPE){
buf[i] = '('+new Expression(buf[i][1])+')';
//console.log(buf[i])
}else{
throw new Error("属性内不能混合多条不安全的表达式输出！！");
}
}
context.appendXA(name,"''+"+buf.join('+'));
return null;
}else{//只考虑单一EL表达式的情况
if(buf[0][0] == XA_TYPE){
//buf[0][1] 是一个表达式对象
context.appendXA(name,buf[0][1]);
return null;
//}else{
// 否则任意输出，甚至可以打破xml属性字符
}
}
}
var oneline = context.getAttribute(XML_SPACE_ONELINE);
var space = (!oneline &&/^on/i.test(name)?'\n':' ');// on 事件换行有利于调试
context.appendText(space+name+"='");
if(/^xmlns$/i.test(name)){
if(buf[0] == 'http://www.xidea.org/lite/xhtml'){
buf[0] = 'http://www.w3.org/1999/xhtml'
}
}
context.appendAll(buf);
context.appendText("'");
}
function processTextNode(node,context,chain){
var data = String(node.data);
//context.appendAll(context.parseText(data.replace(/^\s*([\r\n])\s*|\s*([\r\n])\s*$|^(\s)+|(\s)+$/g,"$1$2$3$4"),XT_TYPE))
var trim = context.getAttribute(XML_SPACE_TRIM);
var oneline = context.getAttribute(XML_SPACE_ONELINE);
if(trim == true){//尽可能剔除
data = data.replace(/^\s*|\s*$|(\s)\s+/g,oneline?' ':"$1");
}else if(trim != false){//保留换行
data = data.replace(/^\s*([\r\n])\s*|\s*([\r\n])\s*$|^(\s)+|(\s)+$/g,oneline?' ':"$1$2$3$4");
}
context.appendAll(context.parseText(data,XT_TYPE))
}
function processCDATA(node,context,chain){
context.appendText("<![CDATA[");
context.appendAll(context.parseText(node.data,EL_TYPE));
context.appendText("]]>");
}
function processEntityReference(){
return null;//not support
}
function processEntity(){
return null;//not support
}
function processProcessingInstruction(node,context,chain){
context.appendText("<?",node.target," ",node.data,"?>");
//context.appendText("<?"+node.nodeName+" "+node.data+"?>");
}
function processComment(){
return null;//not support
}
function processDocument(node,context,chain){
for(var n = node.firstChild;n!=null;n = n.nextSibling){
context.parse(n);
}
}
///**
// * @protected
// */
//function processDocumentFragment(node,context,chain){
// var nl = node.childNodes;
// for (var i=0; i<nl.length; i++) {
// context.parse(nl.item(i));
// }
//}
/**
* @protected
*/
function processDocumentType(node,context,chain){
if(node.xml){
context.appendText(node.xml);
}else{
var pubid = node.publicId;
var nodeName = node.nodeName;
var sysid = node.systemId;
if(sysid == '.'){sysid = null}
if(pubid){
if(pubid == "org.xidea.lite.OUTPUT_DTD"){
if(sysid){
context.appendText(decodeURIComponent(sysid));
}
return;
}
context.appendText('<!DOCTYPE ');
context.appendText(nodeName);
context.appendText(' PUBLIC "');
context.appendText(pubid);
if (sysid == null) {
context.appendText( '" "');
context.appendText(sysid);
}
context.appendText('">');
}else if(sysid){
context.appendText('<!DOCTYPE ');
context.appendText(nodeName);
context.appendText(' SYSTEM "');
context.appendText(sysid);
context.appendText('">');
}else{
context.appendText("<!DOCTYPE ");
context.appendText(nodeName);
var sub = node.internalSubset;
if(sub){
context.appendText(" [");
context.appendText(sub);
context.appendText("]");
}
context.appendText(">");
}
}
}
/**
*/
function processNotation(node,context,chain){
return null;//not support
}
//1 2