mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-27 12:07:19 +00:00
68b54a6e6f
Integrating this module allows us to do HTML/XML parsing under Node.js (there is no built-in support for Node.js; we can already do HTML/XML parsing in the browser). The implementation chosen is pure JavaScript, and will work in all configurations of TiddlyWiki.
587 lines
17 KiB
JavaScript
587 lines
17 KiB
JavaScript
//[4] NameStartChar ::= ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
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//[4a] NameChar ::= NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
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//[5] Name ::= NameStartChar (NameChar)*
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var nameStartChar = /[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]///\u10000-\uEFFFF
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var nameChar = new RegExp("[\\-\\.0-9"+nameStartChar.source.slice(1,-1)+"\u00B7\u0300-\u036F\\u203F-\u2040]");
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var tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\:'+nameStartChar.source+nameChar.source+'*)?$');
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//var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
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//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')
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//S_TAG, S_ATTR, S_EQ, S_V
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//S_ATTR_S, S_E, S_S, S_C
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var S_TAG = 0;//tag name offerring
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var S_ATTR = 1;//attr name offerring
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var S_ATTR_S=2;//attr name end and space offer
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var S_EQ = 3;//=space?
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var S_V = 4;//attr value(no quot value only)
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var S_E = 5;//attr value end and no space(quot end)
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var S_S = 6;//(attr value end || tag end ) && (space offer)
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var S_C = 7;//closed el<el />
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function XMLReader(){
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}
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XMLReader.prototype = {
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parse:function(source,defaultNSMap,entityMap){
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var domBuilder = this.domBuilder;
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domBuilder.startDocument();
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_copy(defaultNSMap ,defaultNSMap = {})
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parse(source,defaultNSMap,entityMap,
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domBuilder,this.errorHandler);
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domBuilder.endDocument();
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}
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}
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function parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){
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function fixedFromCharCode(code) {
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// String.prototype.fromCharCode does not supports
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// > 2 bytes unicode chars directly
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if (code > 0xffff) {
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code -= 0x10000;
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var surrogate1 = 0xd800 + (code >> 10)
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, surrogate2 = 0xdc00 + (code & 0x3ff);
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return String.fromCharCode(surrogate1, surrogate2);
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} else {
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return String.fromCharCode(code);
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}
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}
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function entityReplacer(a){
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var k = a.slice(1,-1);
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if(k in entityMap){
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return entityMap[k];
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}else if(k.charAt(0) === '#'){
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return fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))
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}else{
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errorHandler.error('entity not found:'+a);
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return a;
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}
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}
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function appendText(end){//has some bugs
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if(end>start){
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var xt = source.substring(start,end).replace(/&#?\w+;/g,entityReplacer);
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locator&&position(start);
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domBuilder.characters(xt,0,end-start);
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start = end
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}
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}
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function position(p,m){
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while(p>=lineEnd && (m = linePattern.exec(source))){
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lineStart = m.index;
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lineEnd = lineStart + m[0].length;
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locator.lineNumber++;
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//console.log('line++:',locator,startPos,endPos)
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}
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locator.columnNumber = p-lineStart+1;
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}
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var lineStart = 0;
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var lineEnd = 0;
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var linePattern = /.+(?:\r\n?|\n)|.*$/g
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var locator = domBuilder.locator;
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var parseStack = [{currentNSMap:defaultNSMapCopy}]
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var closeMap = {};
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var start = 0;
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while(true){
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try{
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var tagStart = source.indexOf('<',start);
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if(tagStart<0){
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if(!source.substr(start).match(/^\s*$/)){
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var doc = domBuilder.document;
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var text = doc.createTextNode(source.substr(start));
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doc.appendChild(text);
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domBuilder.currentElement = text;
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}
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return;
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}
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if(tagStart>start){
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appendText(tagStart);
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}
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switch(source.charAt(tagStart+1)){
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case '/':
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var end = source.indexOf('>',tagStart+3);
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var tagName = source.substring(tagStart+2,end);
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var config = parseStack.pop();
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var localNSMap = config.localNSMap;
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if(config.tagName != tagName){
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errorHandler.fatalError("end tag name: "+tagName+' is not match the current start tagName:'+config.tagName );
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}
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domBuilder.endElement(config.uri,config.localName,tagName);
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if(localNSMap){
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for(var prefix in localNSMap){
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domBuilder.endPrefixMapping(prefix) ;
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}
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}
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end++;
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break;
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// end elment
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case '?':// <?...?>
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locator&&position(tagStart);
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end = parseInstruction(source,tagStart,domBuilder);
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break;
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case '!':// <!doctype,<![CDATA,<!--
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locator&&position(tagStart);
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end = parseDCC(source,tagStart,domBuilder,errorHandler);
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break;
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default:
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locator&&position(tagStart);
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var el = new ElementAttributes();
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//elStartEnd
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var end = parseElementStartPart(source,tagStart,el,entityReplacer,errorHandler);
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var len = el.length;
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if(locator){
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if(len){
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//attribute position fixed
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for(var i = 0;i<len;i++){
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var a = el[i];
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position(a.offset);
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a.offset = copyLocator(locator,{});
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}
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}
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position(end);
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}
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if(!el.closed && fixSelfClosed(source,end,el.tagName,closeMap)){
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el.closed = true;
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if(!entityMap.nbsp){
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errorHandler.warning('unclosed xml attribute');
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}
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}
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appendElement(el,domBuilder,parseStack);
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if(el.uri === 'http://www.w3.org/1999/xhtml' && !el.closed){
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end = parseHtmlSpecialContent(source,end,el.tagName,entityReplacer,domBuilder)
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}else{
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end++;
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}
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}
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}catch(e){
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errorHandler.error('element parse error: '+e);
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end = -1;
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}
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if(end>start){
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start = end;
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}else{
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//TODO: 这里有可能sax回退，有位置错误风险
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appendText(Math.max(tagStart,start)+1);
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}
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}
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}
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function copyLocator(f,t){
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t.lineNumber = f.lineNumber;
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t.columnNumber = f.columnNumber;
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return t;
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}
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/**
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* @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);
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* @return end of the elementStartPart(end of elementEndPart for selfClosed el)
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*/
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function parseElementStartPart(source,start,el,entityReplacer,errorHandler){
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var attrName;
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var value;
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var p = ++start;
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var s = S_TAG;//status
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while(true){
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var c = source.charAt(p);
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switch(c){
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case '=':
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if(s === S_ATTR){//attrName
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attrName = source.slice(start,p);
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s = S_EQ;
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}else if(s === S_ATTR_S){
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s = S_EQ;
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}else{
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//fatalError: equal must after attrName or space after attrName
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throw new Error('attribute equal must after attrName');
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}
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break;
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case '\'':
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case '"':
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if(s === S_EQ){//equal
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start = p+1;
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p = source.indexOf(c,start)
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if(p>0){
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value = source.slice(start,p).replace(/&#?\w+;/g,entityReplacer);
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el.add(attrName,value,start-1);
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s = S_E;
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}else{
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//fatalError: no end quot match
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throw new Error('attribute value no end \''+c+'\' match');
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}
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}else if(s == S_V){
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value = source.slice(start,p).replace(/&#?\w+;/g,entityReplacer);
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//console.log(attrName,value,start,p)
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el.add(attrName,value,start);
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//console.dir(el)
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errorHandler.warning('attribute "'+attrName+'" missed start quot('+c+')!!');
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start = p+1;
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s = S_E
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}else{
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//fatalError: no equal before
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throw new Error('attribute value must after "="');
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}
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break;
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case '/':
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switch(s){
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case S_TAG:
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el.setTagName(source.slice(start,p));
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case S_E:
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case S_S:
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case S_C:
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s = S_C;
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el.closed = true;
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case S_V:
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case S_ATTR:
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case S_ATTR_S:
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break;
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//case S_EQ:
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default:
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throw new Error("attribute invalid close char('/')")
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}
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break;
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case ''://end document
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//throw new Error('unexpected end of input')
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errorHandler.error('unexpected end of input');
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case '>':
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switch(s){
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case S_TAG:
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el.setTagName(source.slice(start,p));
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case S_E:
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case S_S:
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case S_C:
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break;//normal
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case S_V://Compatible state
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case S_ATTR:
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value = source.slice(start,p);
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if(value.slice(-1) === '/'){
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el.closed = true;
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value = value.slice(0,-1)
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}
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case S_ATTR_S:
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if(s === S_ATTR_S){
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value = attrName;
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}
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if(s == S_V){
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errorHandler.warning('attribute "'+value+'" missed quot(")!!');
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el.add(attrName,value.replace(/&#?\w+;/g,entityReplacer),start)
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}else{
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errorHandler.warning('attribute "'+value+'" missed value!! "'+value+'" instead!!')
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el.add(value,value,start)
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}
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break;
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case S_EQ:
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throw new Error('attribute value missed!!');
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}
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// console.log(tagName,tagNamePattern,tagNamePattern.test(tagName))
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return p;
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/*xml space '\x20' | #x9 | #xD | #xA; */
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case '\u0080':
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c = ' ';
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default:
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if(c<= ' '){//space
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switch(s){
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case S_TAG:
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el.setTagName(source.slice(start,p));//tagName
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s = S_S;
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break;
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case S_ATTR:
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attrName = source.slice(start,p)
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s = S_ATTR_S;
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break;
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case S_V:
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var value = source.slice(start,p).replace(/&#?\w+;/g,entityReplacer);
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errorHandler.warning('attribute "'+value+'" missed quot(")!!');
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el.add(attrName,value,start)
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case S_E:
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s = S_S;
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break;
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//case S_S:
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//case S_EQ:
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//case S_ATTR_S:
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// void();break;
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//case S_C:
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//ignore warning
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}
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}else{//not space
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//S_TAG, S_ATTR, S_EQ, S_V
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//S_ATTR_S, S_E, S_S, S_C
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switch(s){
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//case S_TAG:void();break;
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//case S_ATTR:void();break;
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//case S_V:void();break;
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case S_ATTR_S:
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errorHandler.warning('attribute "'+attrName+'" missed value!! "'+attrName+'" instead!!')
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el.add(attrName,attrName,start);
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start = p;
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s = S_ATTR;
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break;
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case S_E:
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errorHandler.warning('attribute space is required"'+attrName+'"!!')
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case S_S:
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s = S_ATTR;
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start = p;
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break;
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case S_EQ:
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s = S_V;
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start = p;
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break;
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case S_C:
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throw new Error("elements closed character '/' and '>' must be connected to");
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}
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}
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}
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p++;
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}
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}
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/**
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* @return end of the elementStartPart(end of elementEndPart for selfClosed el)
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*/
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function appendElement(el,domBuilder,parseStack){
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var tagName = el.tagName;
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var localNSMap = null;
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var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
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var i = el.length;
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while(i--){
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var a = el[i];
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var qName = a.qName;
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var value = a.value;
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var nsp = qName.indexOf(':');
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if(nsp>0){
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var prefix = a.prefix = qName.slice(0,nsp);
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var localName = qName.slice(nsp+1);
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var nsPrefix = prefix === 'xmlns' && localName
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}else{
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localName = qName;
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prefix = null
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nsPrefix = qName === 'xmlns' && ''
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}
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//can not set prefix,because prefix !== ''
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a.localName = localName ;
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//prefix == null for no ns prefix attribute
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if(nsPrefix !== false){//hack!!
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if(localNSMap == null){
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localNSMap = {}
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//console.log(currentNSMap,0)
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_copy(currentNSMap,currentNSMap={})
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//console.log(currentNSMap,1)
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}
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currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
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a.uri = 'http://www.w3.org/2000/xmlns/'
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domBuilder.startPrefixMapping(nsPrefix, value)
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}
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}
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var i = el.length;
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while(i--){
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a = el[i];
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var prefix = a.prefix;
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if(prefix){//no prefix attribute has no namespace
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if(prefix === 'xml'){
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a.uri = 'http://www.w3.org/XML/1998/namespace';
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}if(prefix !== 'xmlns'){
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a.uri = currentNSMap[prefix]
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//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}
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}
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}
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}
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var nsp = tagName.indexOf(':');
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if(nsp>0){
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prefix = el.prefix = tagName.slice(0,nsp);
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localName = el.localName = tagName.slice(nsp+1);
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}else{
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prefix = null;//important!!
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localName = el.localName = tagName;
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}
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//no prefix element has default namespace
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var ns = el.uri = currentNSMap[prefix || ''];
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domBuilder.startElement(ns,localName,tagName,el);
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//endPrefixMapping and startPrefixMapping have not any help for dom builder
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//localNSMap = null
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if(el.closed){
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domBuilder.endElement(ns,localName,tagName);
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if(localNSMap){
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for(prefix in localNSMap){
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domBuilder.endPrefixMapping(prefix)
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}
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}
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}else{
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el.currentNSMap = currentNSMap;
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el.localNSMap = localNSMap;
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parseStack.push(el);
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}
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}
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function parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){
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if(/^(?:script|textarea)$/i.test(tagName)){
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var elEndStart = source.indexOf('</'+tagName+'>',elStartEnd);
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var text = source.substring(elStartEnd+1,elEndStart);
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if(/[&<]/.test(text)){
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if(/^script$/i.test(tagName)){
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//if(!/\]\]>/.test(text)){
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//lexHandler.startCDATA();
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domBuilder.characters(text,0,text.length);
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//lexHandler.endCDATA();
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return elEndStart;
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//}
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}//}else{//text area
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text = text.replace(/&#?\w+;/g,entityReplacer);
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domBuilder.characters(text,0,text.length);
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return elEndStart;
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//}
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}
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}
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return elStartEnd+1;
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}
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function fixSelfClosed(source,elStartEnd,tagName,closeMap){
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//if(tagName in closeMap){
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var pos = closeMap[tagName];
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if(pos == null){
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//console.log(tagName)
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pos = closeMap[tagName] = source.lastIndexOf('</'+tagName+'>')
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}
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return pos<elStartEnd;
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//}
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}
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function _copy(source,target){
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for(var n in source){target[n] = source[n]}
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}
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function parseDCC(source,start,domBuilder,errorHandler){//sure start with '<!'
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var next= source.charAt(start+2)
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switch(next){
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case '-':
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if(source.charAt(start + 3) === '-'){
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var end = source.indexOf('-->',start+4);
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//append comment source.substring(4,end)//<!--
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if(end>start){
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domBuilder.comment(source,start+4,end-start-4);
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return end+3;
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}else{
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errorHandler.error("Unclosed comment");
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return -1;
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}
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}else{
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//error
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return -1;
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}
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default:
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if(source.substr(start+3,6) == 'CDATA['){
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var end = source.indexOf(']]>',start+9);
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domBuilder.startCDATA();
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domBuilder.characters(source,start+9,end-start-9);
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domBuilder.endCDATA()
|
||
return end+3;
|
||
}
|
||
//<!DOCTYPE
|
||
//startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)
|
||
var matchs = split(source,start);
|
||
var len = matchs.length;
|
||
if(len>1 && /!doctype/i.test(matchs[0][0])){
|
||
var name = matchs[1][0];
|
||
var pubid = len>3 && /^public$/i.test(matchs[2][0]) && matchs[3][0]
|
||
var sysid = len>4 && matchs[4][0];
|
||
var lastMatch = matchs[len-1]
|
||
domBuilder.startDTD(name,pubid && pubid.replace(/^(['"])(.*?)\1$/,'$2'),
|
||
sysid && sysid.replace(/^(['"])(.*?)\1$/,'$2'));
|
||
domBuilder.endDTD();
|
||
|
||
return lastMatch.index+lastMatch[0].length
|
||
}
|
||
}
|
||
return -1;
|
||
}
|
||
|
||
|
||
|
||
function parseInstruction(source,start,domBuilder){
|
||
var end = source.indexOf('?>',start);
|
||
if(end){
|
||
var match = source.substring(start,end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);
|
||
if(match){
|
||
var len = match[0].length;
|
||
domBuilder.processingInstruction(match[1], match[2]) ;
|
||
return end+2;
|
||
}else{//error
|
||
return -1;
|
||
}
|
||
}
|
||
return -1;
|
||
}
|
||
|
||
/**
|
||
* @param source
|
||
*/
|
||
function ElementAttributes(source){
|
||
|
||
}
|
||
ElementAttributes.prototype = {
|
||
setTagName:function(tagName){
|
||
if(!tagNamePattern.test(tagName)){
|
||
throw new Error('invalid tagName:'+tagName)
|
||
}
|
||
this.tagName = tagName
|
||
},
|
||
add:function(qName,value,offset){
|
||
if(!tagNamePattern.test(qName)){
|
||
throw new Error('invalid attribute:'+qName)
|
||
}
|
||
this[this.length++] = {qName:qName,value:value,offset:offset}
|
||
},
|
||
length:0,
|
||
getLocalName:function(i){return this[i].localName},
|
||
getOffset:function(i){return this[i].offset},
|
||
getQName:function(i){return this[i].qName},
|
||
getURI:function(i){return this[i].uri},
|
||
getValue:function(i){return this[i].value}
|
||
// ,getIndex:function(uri, localName)){
|
||
// if(localName){
|
||
//
|
||
// }else{
|
||
// var qName = uri
|
||
// }
|
||
// },
|
||
// getValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},
|
||
// getType:function(uri,localName){}
|
||
// getType:function(i){},
|
||
}
|
||
|
||
|
||
|
||
|
||
function _set_proto_(thiz,parent){
|
||
thiz.__proto__ = parent;
|
||
return thiz;
|
||
}
|
||
if(!(_set_proto_({},_set_proto_.prototype) instanceof _set_proto_)){
|
||
_set_proto_ = function(thiz,parent){
|
||
function p(){};
|
||
p.prototype = parent;
|
||
p = new p();
|
||
for(parent in thiz){
|
||
p[parent] = thiz[parent];
|
||
}
|
||
return p;
|
||
}
|
||
}
|
||
|
||
function split(source,start){
|
||
var match;
|
||
var buf = [];
|
||
var reg = /'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;
|
||
reg.lastIndex = start;
|
||
reg.exec(source);//skip <
|
||
while(match = reg.exec(source)){
|
||
buf.push(match);
|
||
if(match[1])return buf;
|
||
}
|
||
}
|
||
|
||
if(typeof require == 'function'){
|
||
exports.XMLReader = XMLReader;
|
||
}
|
||
|