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mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2024-11-05 01:26:18 +00:00
TiddlyWiki5/plugins/tiddlywiki/xmldom/files/sax.js
2017-02-07 18:20:30 +00:00

634 lines
19 KiB
JavaScript
Executable File
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This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

//[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]
//[4a] NameChar ::= NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
//[5] Name ::= NameStartChar (NameChar)*
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
var nameChar = new RegExp("[\\-\\.0-9"+nameStartChar.source.slice(1,-1)+"\\u00B7\\u0300-\\u036F\\u203F-\\u2040]");
var tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\:'+nameStartChar.source+nameChar.source+'*)?$');
//var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
//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(',')
//S_TAG, S_ATTR, S_EQ, S_ATTR_NOQUOT_VALUE
//S_ATTR_SPACE, S_ATTR_END, S_TAG_SPACE, S_TAG_CLOSE
var S_TAG = 0;//tag name offerring
var S_ATTR = 1;//attr name offerring
var S_ATTR_SPACE=2;//attr name end and space offer
var S_EQ = 3;//=space?
var S_ATTR_NOQUOT_VALUE = 4;//attr value(no quot value only)
var S_ATTR_END = 5;//attr value end and no space(quot end)
var S_TAG_SPACE = 6;//(attr value end || tag end ) && (space offer)
var S_TAG_CLOSE = 7;//closed el<el />
function XMLReader(){
}
XMLReader.prototype = {
parse:function(source,defaultNSMap,entityMap){
var domBuilder = this.domBuilder;
domBuilder.startDocument();
_copy(defaultNSMap ,defaultNSMap = {})
parse(source,defaultNSMap,entityMap,
domBuilder,this.errorHandler);
domBuilder.endDocument();
}
}
function parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){
function fixedFromCharCode(code) {
// String.prototype.fromCharCode does not supports
// > 2 bytes unicode chars directly
if (code > 0xffff) {
code -= 0x10000;
var surrogate1 = 0xd800 + (code >> 10)
, surrogate2 = 0xdc00 + (code & 0x3ff);
return String.fromCharCode(surrogate1, surrogate2);
} else {
return String.fromCharCode(code);
}
}
function entityReplacer(a){
var k = a.slice(1,-1);
if(k in entityMap){
return entityMap[k];
}else if(k.charAt(0) === '#'){
return fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))
}else{
errorHandler.error('entity not found:'+a);
return a;
}
}
function appendText(end){//has some bugs
if(end>start){
var xt = source.substring(start,end).replace(/&#?\w+;/g,entityReplacer);
locator&&position(start);
domBuilder.characters(xt,0,end-start);
start = end
}
}
function position(p,m){
while(p>=lineEnd && (m = linePattern.exec(source))){
lineStart = m.index;
lineEnd = lineStart + m[0].length;
locator.lineNumber++;
//console.log('line++:',locator,startPos,endPos)
}
locator.columnNumber = p-lineStart+1;
}
var lineStart = 0;
var lineEnd = 0;
var linePattern = /.*(?:\r\n?|\n)|.*$/g
var locator = domBuilder.locator;
var parseStack = [{currentNSMap:defaultNSMapCopy}]
var closeMap = {};
var start = 0;
while(true){
try{
var tagStart = source.indexOf('<',start);
if(tagStart<0){
if(!source.substr(start).match(/^\s*$/)){
var doc = domBuilder.doc;
var text = doc.createTextNode(source.substr(start));
doc.appendChild(text);
domBuilder.currentElement = text;
}
return;
}
if(tagStart>start){
appendText(tagStart);
}
switch(source.charAt(tagStart+1)){
case '/':
var end = source.indexOf('>',tagStart+3);
var tagName = source.substring(tagStart+2,end);
var config = parseStack.pop();
if(end<0){
tagName = source.substring(tagStart+2).replace(/[\s<].*/,'');
//console.error('#@@@@@@'+tagName)
errorHandler.error("end tag name: "+tagName+' is not complete:'+config.tagName);
end = tagStart+1+tagName.length;
}else if(tagName.match(/\s</)){
tagName = tagName.replace(/[\s<].*/,'');
errorHandler.error("end tag name: "+tagName+' maybe not complete');
end = tagStart+1+tagName.length;
}
//console.error(parseStack.length,parseStack)
//console.error(config);
var localNSMap = config.localNSMap;
var endMatch = config.tagName == tagName;
var endIgnoreCaseMach = endMatch || config.tagName&&config.tagName.toLowerCase() == tagName.toLowerCase()
if(endIgnoreCaseMach){
domBuilder.endElement(config.uri,config.localName,tagName);
if(localNSMap){
for(var prefix in localNSMap){
domBuilder.endPrefixMapping(prefix) ;
}
}
if(!endMatch){
errorHandler.fatalError("end tag name: "+tagName+' is not match the current start tagName:'+config.tagName );
}
}else{
parseStack.push(config)
}
end++;
break;
// end elment
case '?':// <?...?>
locator&&position(tagStart);
end = parseInstruction(source,tagStart,domBuilder);
break;
case '!':// <!doctype,<![CDATA,<!--
locator&&position(tagStart);
end = parseDCC(source,tagStart,domBuilder,errorHandler);
break;
default:
locator&&position(tagStart);
var el = new ElementAttributes();
var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
//elStartEnd
var end = parseElementStartPart(source,tagStart,el,currentNSMap,entityReplacer,errorHandler);
var len = el.length;
if(!el.closed && fixSelfClosed(source,end,el.tagName,closeMap)){
el.closed = true;
if(!entityMap.nbsp){
errorHandler.warning('unclosed xml attribute');
}
}
if(locator && len){
var locator2 = copyLocator(locator,{});
//try{//attribute position fixed
for(var i = 0;i<len;i++){
var a = el[i];
position(a.offset);
a.locator = copyLocator(locator,{});
}
//}catch(e){console.error('@@@@@'+e)}
domBuilder.locator = locator2
if(appendElement(el,domBuilder,currentNSMap)){
parseStack.push(el)
}
domBuilder.locator = locator;
}else{
if(appendElement(el,domBuilder,currentNSMap)){
parseStack.push(el)
}
}
if(el.uri === 'http://www.w3.org/1999/xhtml' && !el.closed){
end = parseHtmlSpecialContent(source,end,el.tagName,entityReplacer,domBuilder)
}else{
end++;
}
}
}catch(e){
errorHandler.error('element parse error: '+e)
//errorHandler.error('element parse error: '+e);
end = -1;
//throw e;
}
if(end>start){
start = end;
}else{
//TODO: 这里有可能sax回退有位置错误风险
appendText(Math.max(tagStart,start)+1);
}
}
}
function copyLocator(f,t){
t.lineNumber = f.lineNumber;
t.columnNumber = f.columnNumber;
return t;
}
/**
* @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);
* @return end of the elementStartPart(end of elementEndPart for selfClosed el)
*/
function parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){
var attrName;
var value;
var p = ++start;
var s = S_TAG;//status
while(true){
var c = source.charAt(p);
switch(c){
case '=':
if(s === S_ATTR){//attrName
attrName = source.slice(start,p);
s = S_EQ;
}else if(s === S_ATTR_SPACE){
s = S_EQ;
}else{
//fatalError: equal must after attrName or space after attrName
throw new Error('attribute equal must after attrName');
}
break;
case '\'':
case '"':
if(s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE
){//equal
if(s === S_ATTR){
errorHandler.warning('attribute value must after "="')
attrName = source.slice(start,p)
}
start = p+1;
p = source.indexOf(c,start)
if(p>0){
value = source.slice(start,p).replace(/&#?\w+;/g,entityReplacer);
el.add(attrName,value,start-1);
s = S_ATTR_END;
}else{
//fatalError: no end quot match
throw new Error('attribute value no end \''+c+'\' match');
}
}else if(s == S_ATTR_NOQUOT_VALUE){
value = source.slice(start,p).replace(/&#?\w+;/g,entityReplacer);
//console.log(attrName,value,start,p)
el.add(attrName,value,start);
//console.dir(el)
errorHandler.warning('attribute "'+attrName+'" missed start quot('+c+')!!');
start = p+1;
s = S_ATTR_END
}else{
//fatalError: no equal before
throw new Error('attribute value must after "="');
}
break;
case '/':
switch(s){
case S_TAG:
el.setTagName(source.slice(start,p));
case S_ATTR_END:
case S_TAG_SPACE:
case S_TAG_CLOSE:
s =S_TAG_CLOSE;
el.closed = true;
case S_ATTR_NOQUOT_VALUE:
case S_ATTR:
case S_ATTR_SPACE:
break;
//case S_EQ:
default:
throw new Error("attribute invalid close char('/')")
}
break;
case ''://end document
//throw new Error('unexpected end of input')
errorHandler.error('unexpected end of input');
if(s == S_TAG){
el.setTagName(source.slice(start,p));
}
return p;
case '>':
switch(s){
case S_TAG:
el.setTagName(source.slice(start,p));
case S_ATTR_END:
case S_TAG_SPACE:
case S_TAG_CLOSE:
break;//normal
case S_ATTR_NOQUOT_VALUE://Compatible state
case S_ATTR:
value = source.slice(start,p);
if(value.slice(-1) === '/'){
el.closed = true;
value = value.slice(0,-1)
}
case S_ATTR_SPACE:
if(s === S_ATTR_SPACE){
value = attrName;
}
if(s == S_ATTR_NOQUOT_VALUE){
errorHandler.warning('attribute "'+value+'" missed quot(")!!');
el.add(attrName,value.replace(/&#?\w+;/g,entityReplacer),start)
}else{
if(currentNSMap[''] !== 'http://www.w3.org/1999/xhtml' || !value.match(/^(?:disabled|checked|selected)$/i)){
errorHandler.warning('attribute "'+value+'" missed value!! "'+value+'" instead!!')
}
el.add(value,value,start)
}
break;
case S_EQ:
throw new Error('attribute value missed!!');
}
// console.log(tagName,tagNamePattern,tagNamePattern.test(tagName))
return p;
/*xml space '\x20' | #x9 | #xD | #xA; */
case '\u0080':
c = ' ';
default:
if(c<= ' '){//space
switch(s){
case S_TAG:
el.setTagName(source.slice(start,p));//tagName
s = S_TAG_SPACE;
break;
case S_ATTR:
attrName = source.slice(start,p)
s = S_ATTR_SPACE;
break;
case S_ATTR_NOQUOT_VALUE:
var value = source.slice(start,p).replace(/&#?\w+;/g,entityReplacer);
errorHandler.warning('attribute "'+value+'" missed quot(")!!');
el.add(attrName,value,start)
case S_ATTR_END:
s = S_TAG_SPACE;
break;
//case S_TAG_SPACE:
//case S_EQ:
//case S_ATTR_SPACE:
// void();break;
//case S_TAG_CLOSE:
//ignore warning
}
}else{//not space
//S_TAG, S_ATTR, S_EQ, S_ATTR_NOQUOT_VALUE
//S_ATTR_SPACE, S_ATTR_END, S_TAG_SPACE, S_TAG_CLOSE
switch(s){
//case S_TAG:void();break;
//case S_ATTR:void();break;
//case S_ATTR_NOQUOT_VALUE:void();break;
case S_ATTR_SPACE:
var tagName = el.tagName;
if(currentNSMap[''] !== 'http://www.w3.org/1999/xhtml' || !attrName.match(/^(?:disabled|checked|selected)$/i)){
errorHandler.warning('attribute "'+attrName+'" missed value!! "'+attrName+'" instead2!!')
}
el.add(attrName,attrName,start);
start = p;
s = S_ATTR;
break;
case S_ATTR_END:
errorHandler.warning('attribute space is required"'+attrName+'"!!')
case S_TAG_SPACE:
s = S_ATTR;
start = p;
break;
case S_EQ:
s = S_ATTR_NOQUOT_VALUE;
start = p;
break;
case S_TAG_CLOSE:
throw new Error("elements closed character '/' and '>' must be connected to");
}
}
}//end outer switch
//console.log('p++',p)
p++;
}
}
/**
* @return true if has new namespace define
*/
function appendElement(el,domBuilder,currentNSMap){
var tagName = el.tagName;
var localNSMap = null;
//var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
var i = el.length;
while(i--){
var a = el[i];
var qName = a.qName;
var value = a.value;
var nsp = qName.indexOf(':');
if(nsp>0){
var prefix = a.prefix = qName.slice(0,nsp);
var localName = qName.slice(nsp+1);
var nsPrefix = prefix === 'xmlns' && localName
}else{
localName = qName;
prefix = null
nsPrefix = qName === 'xmlns' && ''
}
//can not set prefix,because prefix !== ''
a.localName = localName ;
//prefix == null for no ns prefix attribute
if(nsPrefix !== false){//hack!!
if(localNSMap == null){
localNSMap = {}
//console.log(currentNSMap,0)
_copy(currentNSMap,currentNSMap={})
//console.log(currentNSMap,1)
}
currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
a.uri = 'http://www.w3.org/2000/xmlns/'
domBuilder.startPrefixMapping(nsPrefix, value)
}
}
var i = el.length;
while(i--){
a = el[i];
var prefix = a.prefix;
if(prefix){//no prefix attribute has no namespace
if(prefix === 'xml'){
a.uri = 'http://www.w3.org/XML/1998/namespace';
}if(prefix !== 'xmlns'){
a.uri = currentNSMap[prefix || '']
//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}
}
}
}
var nsp = tagName.indexOf(':');
if(nsp>0){
prefix = el.prefix = tagName.slice(0,nsp);
localName = el.localName = tagName.slice(nsp+1);
}else{
prefix = null;//important!!
localName = el.localName = tagName;
}
//no prefix element has default namespace
var ns = el.uri = currentNSMap[prefix || ''];
domBuilder.startElement(ns,localName,tagName,el);
//endPrefixMapping and startPrefixMapping have not any help for dom builder
//localNSMap = null
if(el.closed){
domBuilder.endElement(ns,localName,tagName);
if(localNSMap){
for(prefix in localNSMap){
domBuilder.endPrefixMapping(prefix)
}
}
}else{
el.currentNSMap = currentNSMap;
el.localNSMap = localNSMap;
//parseStack.push(el);
return true;
}
}
function parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){
if(/^(?:script|textarea)$/i.test(tagName)){
var elEndStart = source.indexOf('</'+tagName+'>',elStartEnd);
var text = source.substring(elStartEnd+1,elEndStart);
if(/[&<]/.test(text)){
if(/^script$/i.test(tagName)){
//if(!/\]\]>/.test(text)){
//lexHandler.startCDATA();
domBuilder.characters(text,0,text.length);
//lexHandler.endCDATA();
return elEndStart;
//}
}//}else{//text area
text = text.replace(/&#?\w+;/g,entityReplacer);
domBuilder.characters(text,0,text.length);
return elEndStart;
//}
}
}
return elStartEnd+1;
}
function fixSelfClosed(source,elStartEnd,tagName,closeMap){
//if(tagName in closeMap){
var pos = closeMap[tagName];
if(pos == null){
//console.log(tagName)
pos = source.lastIndexOf('</'+tagName+'>')
if(pos<elStartEnd){//忘记闭合
pos = source.lastIndexOf('</'+tagName)
}
closeMap[tagName] =pos
}
return pos<elStartEnd;
//}
}
function _copy(source,target){
for(var n in source){target[n] = source[n]}
}
function parseDCC(source,start,domBuilder,errorHandler){//sure start with '<!'
var next= source.charAt(start+2)
switch(next){
case '-':
if(source.charAt(start + 3) === '-'){
var end = source.indexOf('-->',start+4);
//append comment source.substring(4,end)//<!--
if(end>start){
domBuilder.comment(source,start+4,end-start-4);
return end+3;
}else{
errorHandler.error("Unclosed comment");
return -1;
}
}else{
//error
return -1;
}
default:
if(source.substr(start+3,6) == 'CDATA['){
var end = source.indexOf(']]>',start+9);
domBuilder.startCDATA();
domBuilder.characters(source,start+9,end-start-9);
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},
getLocator:function(i){return this[i].locator},
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;
}
}
exports.XMLReader = XMLReader;