[]
readme
course(s)
preface
I
1
2
II
3
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III
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6
7
IV
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V
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afterthought(s)
appendix
reference(s)
example(s)
resource(s)
_
professional-ria-03-xmlsax.js / js
************************************************************************************************************* XMLP is a pull-based parser. The calling application passes in a XML string to the constructor, then repeatedly calls .next() to parse the next segment. .next() returns a flag indicating what type of segment was found, and stores data temporarily in couple member variables (name, content, array of attributes), which can be accessed by several .get____() methods.Basically, XMLP is the lowest common denominator parser - an very simple API which other wrappers can be built against. *****************************************************************************************************************/ XMLP = function(strXML) { Author: Scott Severtson Description: Instantiates and initializes the object *********************************************************************************************************************/ // Normalize line breaks strXML = SAXStrings.replace(strXML, null, null, "\r\n", "\n"); strXML = SAXStrings.replace(strXML, null, null, "\r", "\n"); this.m_xml = strXML; this.m_iP = 0; this.m_iState = XMLP._STATE_PROLOG; this.m_stack = new Stack(); this._clearAttributes(); } // end XMLP constructor // CONSTANTS (these must be below the constructor) // ========================================================================= // ========================================================================= // ========================================================================= XMLP._NONE = 0; XMLP._ELM_B = 1; XMLP._ELM_E = 2; XMLP._ELM_EMP = 3; XMLP._ATT = 4; XMLP._TEXT = 5; XMLP._ENTITY = 6; XMLP._PI = 7; XMLP._CDATA = 8; XMLP._COMMENT = 9; XMLP._DTD = 10; XMLP._ERROR = 11; XMLP._CONT_XML = 0; XMLP._CONT_ALT = 1; XMLP._ATT_NAME = 0; XMLP._ATT_VAL = 1; XMLP._STATE_PROLOG = 1; XMLP._STATE_DOCUMENT = 2; XMLP._STATE_MISC = 3; XMLP._errs = new Array(); XMLP._errs[XMLP.ERR_CLOSE_PI = 0 ] = "PI: missing closing sequence"; XMLP._errs[XMLP.ERR_CLOSE_DTD = 1 ] = "DTD: missing closing sequence"; XMLP._errs[XMLP.ERR_CLOSE_COMMENT = 2 ] = "Comment: missing closing sequence"; XMLP._errs[XMLP.ERR_CLOSE_CDATA = 3 ] = "CDATA: missing closing sequence"; XMLP._errs[XMLP.ERR_CLOSE_ELM = 4 ] = "Element: missing closing sequence"; XMLP._errs[XMLP.ERR_CLOSE_ENTITY = 5 ] = "Entity: missing closing sequence"; XMLP._errs[XMLP.ERR_PI_TARGET = 6 ] = "PI: target is required"; XMLP._errs[XMLP.ERR_ELM_EMPTY = 7 ] = "Element: cannot be both empty and closing"; XMLP._errs[XMLP.ERR_ELM_NAME = 8 ] = "Element: name must immediatly follow \"<\""; XMLP._errs[XMLP.ERR_ELM_LT_NAME = 9 ] = "Element: \"<\" not allowed in element names"; XMLP._errs[XMLP.ERR_ATT_VALUES = 10] = "Attribute: values are required and must be in quotes"; XMLP._errs[XMLP.ERR_ATT_LT_NAME = 11] = "Element: \"<\" not allowed in attribute names"; XMLP._errs[XMLP.ERR_ATT_LT_VALUE = 12] = "Attribute: \"<\" not allowed in attribute values"; XMLP._errs[XMLP.ERR_ATT_DUP = 13] = "Attribute: duplicate attributes not allowed"; XMLP._errs[XMLP.ERR_ENTITY_UNKNOWN = 14] = "Entity: unknown entity"; XMLP._errs[XMLP.ERR_INFINITELOOP = 15] = "Infininte loop"; XMLP._errs[XMLP.ERR_DOC_STRUCTURE = 16] = "Document: only comments, processing instructions, or whitespace allowed outside of document element"; XMLP._errs[XMLP.ERR_ELM_NESTING = 17] = "Element: must be nested correctly"; // ========================================================================= // ========================================================================= // ========================================================================= XMLP.prototype._addAttribute = function(name, value) { Author: Scott Severtson *********************************************************************************************************************/ this.m_atts[this.m_atts.length] = new Array(name, value); } // end function _addAttribute XMLP.prototype._checkStructure = function(iEvent) { Author: Scott Severtson *********************************************************************************************************************/ if(XMLP._STATE_PROLOG == this.m_iState) { if((XMLP._TEXT == iEvent) || (XMLP._ENTITY == iEvent)) { if(SAXStrings.indexOfNonWhitespace(this.getContent(), this.getContentBegin(), this.getContentEnd()) != -1) { return this._setErr(XMLP.ERR_DOC_STRUCTURE); } } if((XMLP._ELM_B == iEvent) || (XMLP._ELM_EMP == iEvent)) { this.m_iState = XMLP._STATE_DOCUMENT; // Don't return - fall through to next state } } if(XMLP._STATE_DOCUMENT == this.m_iState) { if((XMLP._ELM_B == iEvent) || (XMLP._ELM_EMP == iEvent)) { this.m_stack.push(this.getName()); } if((XMLP._ELM_E == iEvent) || (XMLP._ELM_EMP == iEvent)) { var strTop = this.m_stack.pop(); if((strTop == null) || (strTop != this.getName())) { return this._setErr(XMLP.ERR_ELM_NESTING); } } if(this.m_stack.count() == 0) { this.m_iState = XMLP._STATE_MISC; return iEvent; } } if(XMLP._STATE_MISC == this.m_iState) { if((XMLP._ELM_B == iEvent) || (XMLP._ELM_E == iEvent) || (XMLP._ELM_EMP == iEvent) || (XMLP.EVT_DTD == iEvent)) { return this._setErr(XMLP.ERR_DOC_STRUCTURE); } if((XMLP._TEXT == iEvent) || (XMLP._ENTITY == iEvent)) { if(SAXStrings.indexOfNonWhitespace(this.getContent(), this.getContentBegin(), this.getContentEnd()) != -1) { return this._setErr(XMLP.ERR_DOC_STRUCTURE); } } } return iEvent; } // end function _checkStructure XMLP.prototype._clearAttributes = function() { Author: Scott Severtson *********************************************************************************************************************/ this.m_atts = new Array(); } // end function _clearAttributes XMLP.prototype._findAttributeIndex = function(name) { Author: Scott Severtson *********************************************************************************************************************/ for(var i = 0; i < this.m_atts.length; i++) { if(this.m_atts[i][XMLP._ATT_NAME] == name) { return i; } } return -1; } // end function _findAttributeIndex XMLP.prototype.getAttributeCount = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_atts ? this.m_atts.length : 0; } // end function getAttributeCount() XMLP.prototype.getAttributeName = function(index) { Author: Scott Severtson *********************************************************************************************************************/ return ((index < 0) || (index >= this.m_atts.length)) ? null : this.m_atts[index][XMLP._ATT_NAME]; } //end function getAttributeName XMLP.prototype.getAttributeValue = function(index) { Author: Scott Severtson *********************************************************************************************************************/ return ((index < 0) || (index >= this.m_atts.length)) ? null : __unescapeString(this.m_atts[index][XMLP._ATT_VAL]); } // end function getAttributeValue XMLP.prototype.getAttributeValueByName = function(name) { Author: Scott Severtson *********************************************************************************************************************/ return this.getAttributeValue(this._findAttributeIndex(name)); } // end function getAttributeValueByName XMLP.prototype.getColumnNumber = function() { Author: Scott Severtson *********************************************************************************************************************/ return SAXStrings.getColumnNumber(this.m_xml, this.m_iP); } // end function getColumnNumber XMLP.prototype.getContent = function() { Author: Scott Severtson *********************************************************************************************************************/ return (this.m_cSrc == XMLP._CONT_XML) ? this.m_xml : this.m_cAlt; } //end function getContent XMLP.prototype.getContentBegin = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_cB; } //end function getContentBegin XMLP.prototype.getContentEnd = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_cE; } // end function getContentEnd XMLP.prototype.getLineNumber = function() { Author: Scott Severtson *********************************************************************************************************************/ return SAXStrings.getLineNumber(this.m_xml, this.m_iP); } // end function getLineNumber XMLP.prototype.getName = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_name; } // end function getName() XMLP.prototype.next = function() { Author: Scott Severtson *********************************************************************************************************************/ return this._checkStructure(this._parse()); } // end function next() XMLP.prototype._parse = function() { Author: Scott Severtson *********************************************************************************************************************/ if(this.m_iP == this.m_xml.length) { return XMLP._NONE; } if(this.m_iP == this.m_xml.indexOf("<?", this.m_iP)) { return this._parsePI (this.m_iP + 2); } else if(this.m_iP == this.m_xml.indexOf("<!DOCTYPE", this.m_iP)) { return this._parseDTD (this.m_iP + 9); } else if(this.m_iP == this.m_xml.indexOf("<!--", this.m_iP)) { return this._parseComment(this.m_iP + 4); } else if(this.m_iP == this.m_xml.indexOf("<![CDATA[", this.m_iP)) { return this._parseCDATA (this.m_iP + 9); } else if(this.m_iP == this.m_xml.indexOf("<", this.m_iP)) { return this._parseElement(this.m_iP + 1); } else if(this.m_iP == this.m_xml.indexOf("&", this.m_iP)) { return this._parseEntity (this.m_iP + 1); } else{ return this._parseText (this.m_iP); } } // end function _parse XMLP.prototype._parseAttribute = function(iB, iE) { Author: Scott Severtson *********************************************************************************************************************/ var iNB, iNE, iEq, iVB, iVE; var cQuote, strN, strV; this.m_cAlt = ""; //resets the value so we don't use an old one by accident (see testAttribute7 in the test suite) iNB = SAXStrings.indexOfNonWhitespace(this.m_xml, iB, iE); if((iNB == -1) ||(iNB >= iE)) { return iNB; } iEq = this.m_xml.indexOf("=", iNB); if((iEq == -1) || (iEq > iE)) { return this._setErr(XMLP.ERR_ATT_VALUES); } iNE = SAXStrings.lastIndexOfNonWhitespace(this.m_xml, iNB, iEq); iVB = SAXStrings.indexOfNonWhitespace(this.m_xml, iEq + 1, iE); if((iVB == -1) ||(iVB > iE)) { return this._setErr(XMLP.ERR_ATT_VALUES); } cQuote = this.m_xml.charAt(iVB); if(SAXStrings.QUOTES.indexOf(cQuote) == -1) { return this._setErr(XMLP.ERR_ATT_VALUES); } iVE = this.m_xml.indexOf(cQuote, iVB + 1); if((iVE == -1) ||(iVE > iE)) { return this._setErr(XMLP.ERR_ATT_VALUES); } strN = this.m_xml.substring(iNB, iNE + 1); strV = this.m_xml.substring(iVB + 1, iVE); if(strN.indexOf("<") != -1) { return this._setErr(XMLP.ERR_ATT_LT_NAME); } if(strV.indexOf("<") != -1) { return this._setErr(XMLP.ERR_ATT_LT_VALUE); } strV = SAXStrings.replace(strV, null, null, "\n", " "); strV = SAXStrings.replace(strV, null, null, "\t", " "); iRet = this._replaceEntities(strV); if(iRet == XMLP._ERROR) { return iRet; } strV = this.m_cAlt; if(this._findAttributeIndex(strN) == -1) { this._addAttribute(strN, strV); } else { return this._setErr(XMLP.ERR_ATT_DUP); } this.m_iP = iVE + 2; return XMLP._ATT; } // end function _parseAttribute XMLP.prototype._parseCDATA = function(iB) { Author: Scott Severtson *********************************************************************************************************************/ var iE = this.m_xml.indexOf("]]>", iB); if (iE == -1) { return this._setErr(XMLP.ERR_CLOSE_CDATA); } this._setContent(XMLP._CONT_XML, iB, iE); this.m_iP = iE + 3; return XMLP._CDATA; } // end function _parseCDATA XMLP.prototype._parseComment = function(iB) { Author: Scott Severtson *********************************************************************************************************************/ var iE = this.m_xml.indexOf("-" + "->", iB); if (iE == -1) { return this._setErr(XMLP.ERR_CLOSE_COMMENT); } this._setContent(XMLP._CONT_XML, iB, iE); this.m_iP = iE + 3; return XMLP._COMMENT; } // end function _parseComment XMLP.prototype._parseDTD = function(iB) { Author: Scott Severtson *********************************************************************************************************************/ // Eat DTD var iE, strClose, iInt, iLast; iE = this.m_xml.indexOf(">", iB); if(iE == -1) { return this._setErr(XMLP.ERR_CLOSE_DTD); } iInt = this.m_xml.indexOf("[", iB); strClose = ((iInt != -1) && (iInt < iE)) ? "]>" : ">"; while(true) { // DEBUG: Remove if(iE == iLast) { return this._setErr(XMLP.ERR_INFINITELOOP); } iLast = iE; // DEBUG: Remove End iE = this.m_xml.indexOf(strClose, iB); if(iE == -1) { return this._setErr(XMLP.ERR_CLOSE_DTD); } // Make sure it is not the end of a CDATA section if (this.m_xml.substring(iE - 1, iE + 2) != "]]>") { break; } } this.m_iP = iE + strClose.length; return XMLP._DTD; } // end function _parseDTD XMLP.prototype._parseElement = function(iB) { Author: Scott Severtson *********************************************************************************************************************/ var iE, iDE, iNE, iRet; var iType, strN, iLast; iDE = iE = this.m_xml.indexOf(">", iB); if(iE == -1) { return this._setErr(XMLP.ERR_CLOSE_ELM); } if(this.m_xml.charAt(iB) == "/") { iType = XMLP._ELM_E; iB++; } else { iType = XMLP._ELM_B; } if(this.m_xml.charAt(iE - 1) == "/") { if(iType == XMLP._ELM_E) { return this._setErr(XMLP.ERR_ELM_EMPTY); } iType = XMLP._ELM_EMP; iDE--; } iDE = SAXStrings.lastIndexOfNonWhitespace(this.m_xml, iB, iDE); //djohack //hack to allow for elements with single character names to be recognized if (iE - iB != 1 ) { if(SAXStrings.indexOfNonWhitespace(this.m_xml, iB, iDE) != iB) { return this._setErr(XMLP.ERR_ELM_NAME); } } // end hack -- original code below /* if(SAXStrings.indexOfNonWhitespace(this.m_xml, iB, iDE) != iB) return this._setErr(XMLP.ERR_ELM_NAME); */ this._clearAttributes(); iNE = SAXStrings.indexOfWhitespace(this.m_xml, iB, iDE); if(iNE == -1) { iNE = iDE + 1; } else { this.m_iP = iNE; while(this.m_iP < iDE) { // DEBUG: Remove if(this.m_iP == iLast) return this._setErr(XMLP.ERR_INFINITELOOP); iLast = this.m_iP; // DEBUG: Remove End iRet = this._parseAttribute(this.m_iP, iDE); if(iRet == XMLP._ERROR) return iRet; } } strN = this.m_xml.substring(iB, iNE); if(strN.indexOf("<") != -1) { return this._setErr(XMLP.ERR_ELM_LT_NAME); } this.m_name = strN; this.m_iP = iE + 1; return iType; } // end function _parseElement XMLP.prototype._parseEntity = function(iB) { Author: Scott Severtson *********************************************************************************************************************/ var iE = this.m_xml.indexOf(";", iB); if(iE == -1) { return this._setErr(XMLP.ERR_CLOSE_ENTITY); } this.m_iP = iE + 1; return this._replaceEntity(this.m_xml, iB, iE); } // end function _parseEntity XMLP.prototype._parsePI = function(iB) { Author: Scott Severtson *********************************************************************************************************************/ var iE, iTB, iTE, iCB, iCE; iE = this.m_xml.indexOf("?>", iB); if(iE == -1) { return this._setErr(XMLP.ERR_CLOSE_PI); } iTB = SAXStrings.indexOfNonWhitespace(this.m_xml, iB, iE); if(iTB == -1) { return this._setErr(XMLP.ERR_PI_TARGET); } iTE = SAXStrings.indexOfWhitespace(this.m_xml, iTB, iE); if(iTE == -1) { iTE = iE; } iCB = SAXStrings.indexOfNonWhitespace(this.m_xml, iTE, iE); if(iCB == -1) { iCB = iE; } iCE = SAXStrings.lastIndexOfNonWhitespace(this.m_xml, iCB, iE); if(iCE == -1) { iCE = iE - 1; } this.m_name = this.m_xml.substring(iTB, iTE); this._setContent(XMLP._CONT_XML, iCB, iCE + 1); this.m_iP = iE + 2; return XMLP._PI; } // end function _parsePI XMLP.prototype._parseText = function(iB) { Author: Scott Severtson *********************************************************************************************************************/ var iE, iEE; iE = this.m_xml.indexOf("<", iB); if(iE == -1) { iE = this.m_xml.length; } iEE = this.m_xml.indexOf("&", iB); if((iEE != -1) && (iEE <= iE)) { iE = iEE; } this._setContent(XMLP._CONT_XML, iB, iE); this.m_iP = iE; return XMLP._TEXT; } // end function _parseText XMLP.prototype._replaceEntities = function(strD, iB, iE) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) return ""; iB = iB || 0; iE = iE || strD.length; var iEB, iEE, strRet = ""; iEB = strD.indexOf("&", iB); iEE = iB; while((iEB > 0) && (iEB < iE)) { strRet += strD.substring(iEE, iEB); iEE = strD.indexOf(";", iEB) + 1; if((iEE == 0) || (iEE > iE)) { return this._setErr(XMLP.ERR_CLOSE_ENTITY); } iRet = this._replaceEntity(strD, iEB + 1, iEE - 1); if(iRet == XMLP._ERROR) { return iRet; } strRet += this.m_cAlt; iEB = strD.indexOf("&", iEE); } if(iEE != iE) { strRet += strD.substring(iEE, iE); } this._setContent(XMLP._CONT_ALT, strRet); return XMLP._ENTITY; } // end function _replaceEntities XMLP.prototype._replaceEntity = function(strD, iB, iE) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) return -1; iB = iB || 0; iE = iE || strD.length; switch(strD.substring(iB, iE)) { case "amp": strEnt = "&"; break; case "lt": strEnt = "<"; break; case "gt": strEnt = ">"; break; case "apos": strEnt = "'"; break; case "quot": strEnt = "\""; break; default: if(strD.charAt(iB) == "#") { strEnt = String.fromCharCode(parseInt(strD.substring(iB + 1, iE))); } else { return this._setErr(XMLP.ERR_ENTITY_UNKNOWN); } break; } this._setContent(XMLP._CONT_ALT, strEnt); return XMLP._ENTITY; } // end function _replaceEntity XMLP.prototype._setContent = function(iSrc) { Author: Scott Severtson *********************************************************************************************************************/ var args = arguments; if(XMLP._CONT_XML == iSrc) { this.m_cAlt = null; this.m_cB = args[1]; this.m_cE = args[2]; } else { this.m_cAlt = args[1]; this.m_cB = 0; this.m_cE = args[1].length; } this.m_cSrc = iSrc; } // end function _setContent XMLP.prototype._setErr = function(iErr) { Author: Scott Severtson *********************************************************************************************************************/ var strErr = XMLP._errs[iErr]; this.m_cAlt = strErr; this.m_cB = 0; this.m_cE = strErr.length; this.m_cSrc = XMLP._CONT_ALT; return XMLP._ERROR; } // end function _setErr SAXDriver = function() { Author: Scott Severtson Description: This is the constructor for the SAXDriver Object *********************************************************************************************************************/ this.m_hndDoc = null; this.m_hndErr = null; this.m_hndLex = null; } // CONSTANTS (these must be below the constructor) // ========================================================================= // ========================================================================= // ========================================================================= SAXDriver.DOC_B = 1; SAXDriver.DOC_E = 2; SAXDriver.ELM_B = 3; SAXDriver.ELM_E = 4; SAXDriver.CHARS = 5; SAXDriver.PI = 6; SAXDriver.CD_B = 7; SAXDriver.CD_E = 8; SAXDriver.CMNT = 9; SAXDriver.DTD_B = 10; SAXDriver.DTD_E = 11; // ========================================================================= // ========================================================================= // ========================================================================= SAXDriver.prototype.parse = function(strD) { Author: Scott Severtson *********************************************************************************************************************/ var parser = new XMLP(strD); if(this.m_hndDoc && this.m_hndDoc.setDocumentLocator) { this.m_hndDoc.setDocumentLocator(this); } this.m_parser = parser; this.m_bErr = false; if(!this.m_bErr) { this._fireEvent(SAXDriver.DOC_B); } this._parseLoop(); if(!this.m_bErr) { this._fireEvent(SAXDriver.DOC_E); } this.m_xml = null; this.m_iP = 0; } // end function parse SAXDriver.prototype.setDocumentHandler = function(hnd) { Author: Scott Severtson *********************************************************************************************************************/ this.m_hndDoc = hnd; } // end function setDocumentHandler SAXDriver.prototype.setErrorHandler = function(hnd) { Author: Scott Severtson *********************************************************************************************************************/ this.m_hndErr = hnd; } // end function setErrorHandler SAXDriver.prototype.setLexicalHandler = function(hnd) { Author: Scott Severtson *********************************************************************************************************************/ this.m_hndLex = hnd; } // end function setLexicalHandler SAXDriver.prototype.getColumnNumber = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_parser.getColumnNumber(); } // end function getColumnNumber SAXDriver.prototype.getLineNumber = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_parser.getLineNumber(); } // end function getLineNumber SAXDriver.prototype.getMessage = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_strErrMsg; } // end function getMessage SAXDriver.prototype.getPublicId = function() { Author: Scott Severtson *********************************************************************************************************************/ return null; } // end function getPublicID SAXDriver.prototype.getSystemId = function() { Author: Scott Severtson *********************************************************************************************************************/ return null; } // end function getSystemId SAXDriver.prototype.getLength = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_parser.getAttributeCount(); } // end function getAttributeCount SAXDriver.prototype.getName = function(index) { Author: Scott Severtson *********************************************************************************************************************/ return this.m_parser.getAttributeName(index); } // end function getAttributeName SAXDriver.prototype.getValue = function(index) { Author: Scott Severtson *********************************************************************************************************************/ return this.m_parser.getAttributeValue(index); } // end function getAttributeValue SAXDriver.prototype.getValueByName = function(name) { Author: Scott Severtson *********************************************************************************************************************/ return this.m_parser.getAttributeValueByName(name); } // end function getAttributeValueByName SAXDriver.prototype._fireError = function(strMsg) { Author: Scott Severtson *********************************************************************************************************************/ this.m_strErrMsg = strMsg; this.m_bErr = true; if(this.m_hndErr && this.m_hndErr.fatalError) { this.m_hndErr.fatalError(this); } } // end function _fireError SAXDriver.prototype._fireEvent = function(iEvt) { Author: Scott Severtson *********************************************************************************************************************/ var hnd, func, args = arguments, iLen = args.length - 1; if(this.m_bErr) return; if(SAXDriver.DOC_B == iEvt) { func = "startDocument"; hnd = this.m_hndDoc; } else if (SAXDriver.DOC_E == iEvt) { func = "endDocument"; hnd = this.m_hndDoc; } else if (SAXDriver.ELM_B == iEvt) { func = "startElement"; hnd = this.m_hndDoc; } else if (SAXDriver.ELM_E == iEvt) { func = "endElement"; hnd = this.m_hndDoc; } else if (SAXDriver.CHARS == iEvt) { func = "characters"; hnd = this.m_hndDoc; } else if (SAXDriver.PI == iEvt) { func = "processingInstruction"; hnd = this.m_hndDoc; } else if (SAXDriver.CD_B == iEvt) { func = "startCDATA"; hnd = this.m_hndLex; } else if (SAXDriver.CD_E == iEvt) { func = "endCDATA"; hnd = this.m_hndLex; } else if (SAXDriver.CMNT == iEvt) { func = "comment"; hnd = this.m_hndLex; } if(hnd && hnd[func]) { if(0 == iLen) { hnd[func](); } else if (1 == iLen) { hnd[func](args[1]); } else if (2 == iLen) { hnd[func](args[1], args[2]); } else if (3 == iLen) { hnd[func](args[1], args[2], args[3]); } } } // end function _fireEvent SAXDriver.prototype._parseLoop = function(parser) { Author: Scott Severtson *********************************************************************************************************************/ var iEvent, parser; parser = this.m_parser; while(!this.m_bErr) { iEvent = parser.next(); if(iEvent == XMLP._ELM_B) { this._fireEvent(SAXDriver.ELM_B, parser.getName(), this); } else if(iEvent == XMLP._ELM_E) { this._fireEvent(SAXDriver.ELM_E, parser.getName()); } else if(iEvent == XMLP._ELM_EMP) { this._fireEvent(SAXDriver.ELM_B, parser.getName(), this); this._fireEvent(SAXDriver.ELM_E, parser.getName()); } else if(iEvent == XMLP._TEXT) { this._fireEvent(SAXDriver.CHARS, parser.getContent(), parser.getContentBegin(), parser.getContentEnd() - parser.getContentBegin()); } else if(iEvent == XMLP._ENTITY) { this._fireEvent(SAXDriver.CHARS, parser.getContent(), parser.getContentBegin(), parser.getContentEnd() - parser.getContentBegin()); } else if(iEvent == XMLP._PI) { this._fireEvent(SAXDriver.PI, parser.getName(), parser.getContent().substring(parser.getContentBegin(), parser.getContentEnd())); } else if(iEvent == XMLP._CDATA) { this._fireEvent(SAXDriver.CD_B); this._fireEvent(SAXDriver.CHARS, parser.getContent(), parser.getContentBegin(), parser.getContentEnd() - parser.getContentBegin()); this._fireEvent(SAXDriver.CD_E); } else if(iEvent == XMLP._COMMENT) { this._fireEvent(SAXDriver.CMNT, parser.getContent(), parser.getContentBegin(), parser.getContentEnd() - parser.getContentBegin()); } else if(iEvent == XMLP._DTD) { } else if(iEvent == XMLP._ERROR) { this._fireError(parser.getContent()); } else if(iEvent == XMLP._NONE) { return; } } } // end function _parseLoop SAXStrings = function() { Author: Scott Severtson Description: This is the constructor of the SAXStrings object *********************************************************************************************************************/ } // end function SAXStrings // CONSTANTS (these must be below the constructor) // ========================================================================= // ========================================================================= // ========================================================================= SAXStrings.WHITESPACE = " \t\n\r"; SAXStrings.QUOTES = "\"'"; // ========================================================================= // ========================================================================= // ========================================================================= SAXStrings.getColumnNumber = function(strD, iP) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) { return -1; } iP = iP || strD.length; var arrD = strD.substring(0, iP).split("\n"); var strLine = arrD[arrD.length - 1]; arrD.length--; var iLinePos = arrD.join("\n").length; return iP - iLinePos; } // end function getColumnNumber SAXStrings.getLineNumber = function(strD, iP) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) { return -1; } iP = iP || strD.length; return strD.substring(0, iP).split("\n").length } // end function getLineNumber SAXStrings.indexOfNonWhitespace = function(strD, iB, iE) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) { return -1; } iB = iB || 0; iE = iE || strD.length; for(var i = iB; i < iE; i++){ if(SAXStrings.WHITESPACE.indexOf(strD.charAt(i)) == -1) { return i; } } return -1; } // end function indexOfNonWhitespace SAXStrings.indexOfWhitespace = function(strD, iB, iE) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) { return -1; } iB = iB || 0; iE = iE || strD.length; for(var i = iB; i < iE; i++) { if(SAXStrings.WHITESPACE.indexOf(strD.charAt(i)) != -1) { return i; } } return -1; } // end function indexOfWhitespace SAXStrings.isEmpty = function(strD) { Author: Scott Severtson *********************************************************************************************************************/ return (strD == null) || (strD.length == 0); } // end function isEmpty SAXStrings.lastIndexOfNonWhitespace = function(strD, iB, iE) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) { return -1; } iB = iB || 0; iE = iE || strD.length; for(var i = iE - 1; i >= iB; i--){ if(SAXStrings.WHITESPACE.indexOf(strD.charAt(i)) == -1){ return i; } } return -1; } // end function lastIndexOfNonWhitespace SAXStrings.replace = function(strD, iB, iE, strF, strR) { Author: Scott Severtson *********************************************************************************************************************/ if(SAXStrings.isEmpty(strD)) { return ""; } iB = iB || 0; iE = iE || strD.length; return strD.substring(iB, iE).split(strF).join(strR); } // end function replace Stack = function() { Author: Scott Severtson Description: Constructor of the Stack Object *********************************************************************************************************************/ this.m_arr = new Array(); } // end function Stack Stack.prototype.clear = function() { Author: Scott Severtson *********************************************************************************************************************/ this.m_arr = new Array(); } // end function clear Stack.prototype.count = function() { Author: Scott Severtson *********************************************************************************************************************/ return this.m_arr.length; } // end function count Stack.prototype.destroy = function() { Author: Scott Severtson *********************************************************************************************************************/ this.m_arr = null; } // end function destroy Stack.prototype.peek = function() { Author: Scott Severtson *********************************************************************************************************************/ if(this.m_arr.length == 0) { return null; } return this.m_arr[this.m_arr.length - 1]; } // end function peek Stack.prototype.pop = function() { Author: Scott Severtson *********************************************************************************************************************/ if(this.m_arr.length == 0) { return null; } var o = this.m_arr[this.m_arr.length - 1]; this.m_arr.length--; return o; } // end function pop Stack.prototype.push = function(o) { Author: Scott Severtson *********************************************************************************************************************/ this.m_arr[this.m_arr.length] = o; } // end function push // ========================================================================= // ========================================================================= // ========================================================================= // CONVENIENCE FUNCTIONS // ========================================================================= // ========================================================================= // ========================================================================= function isEmpty(str) { Author: mike@idle.org Description: convenience function to identify an empty string *********************************************************************************************************************/ return (str==null) || (str.length==0); } // end function isEmpty function trim(trimString, leftTrim, rightTrim) { Author: may106@psu.edu Description: helper function to trip a string (trimString) of leading (leftTrim) and trailing (rightTrim) whitespace *********************************************************************************************************************/ if (isEmpty(trimString)) { return ""; } // the general focus here is on minimal method calls - hence only one // substring is done to complete the trim. if (leftTrim == null) { leftTrim = true; } if (rightTrim == null) { rightTrim = true; } var left=0; var right=0; var i=0; var k=0; // modified to properly handle strings that are all whitespace if (leftTrim == true) { while ((i<trimString.length) && (whitespace.indexOf(trimString.charAt(i++))!=-1)) { left++; } } if (rightTrim == true) { k=trimString.length-1; while((k>=left) && (whitespace.indexOf(trimString.charAt(k--))!=-1)) { right++; } } return trimString.substring(left, trimString.length - right); } // end function trim
parameter: str : string - The string to be escaped
returns: : string - The escaped stringfunction __escapeString(str) { var escAmpRegEx = /&/g; var escLtRegEx = /</g; var escGtRegEx = />/g; var quotRegEx = /"/g; var aposRegEx = /'/g; str = str.replace(escAmpRegEx, "&"); str = str.replace(escLtRegEx, "<"); str = str.replace(escGtRegEx, ">"); str = str.replace(quotRegEx, """); str = str.replace(aposRegEx, "'"); return str; }
parameter: str : string - The string to be unescaped
returns: : string - The unescaped stringfunction __unescapeString(str) { var escAmpRegEx = /&/g; var escLtRegEx = /</g; var escGtRegEx = />/g; var quotRegEx = /"/g; var aposRegEx = /'/g; str = str.replace(escAmpRegEx, "&"); str = str.replace(escLtRegEx, "<"); str = str.replace(escGtRegEx, ">"); str = str.replace(quotRegEx, "\""); str = str.replace(aposRegEx, "'"); return str; }
[]readme course(s) prefaceI 1 2II 3 4III 5 6 7IV 8 9 10V 11 12 afterthought(s)appendix reference(s) example(s)resource(s) _
(C) Æliens 20/2/2008
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