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rexml.js
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rexml.js
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////// JSXML XML Tools - REXML /////////////
////// Regular Expression-based XML parser /////////////
////// Ver 1.2 Jun 18 2001 /////////////
////// Copyright 2000 Peter Tracey /////////////
////// http://jsxml.homestead.com/ /////////////
function REXML(XML) {
this.XML = XML;
this.rootElement = null;
this.parse = REXML_parse;
if (this.XML && this.XML !== "") this.parse();
}
function REXML_parse() {
const reTag = new RegExp("<([^>/ ]*)([^>]*)>", "g"); // matches that tag name $1 and attribute string $2
const reTagText = new RegExp("<([^>/ ]*)([^>]*)>([^<]*)", "g"); // matches tag name $1, attribute string $2, and text $3
let strType = "";
let strTag = "";
let strText = "";
let strAttributes = "";
let strOpen = "";
let strClose = "";
let iElements = 0;
let xmleLastElement = null;
if (this.XML.length === 0) return;
const arrElementsUnparsed = this.XML.match(reTag);
const arrElementsUnparsedText = this.XML.match(reTagText);
let i = 0;
if (arrElementsUnparsed[0].replace(reTag, "$1") === "?xml") i++;
for (; i < arrElementsUnparsed.length; i++) {
strTag = arrElementsUnparsed[i].replace(reTag, "$1");
strAttributes = arrElementsUnparsed[i].replace(reTag, "$2");
strText = arrElementsUnparsedText[i].replace(reTagText, "$3").replace(/[\r\n\t ]+/g, " "); // remove white space
strClose = "";
if (strTag.indexOf("![CDATA[") === 0) {
strOpen = "<![CDATA[";
strClose = "]]>";
strType = "cdata";
} else if (strTag.indexOf("!--") === 0) {
strOpen = "<!--";
strClose = "-->";
strType = "comment";
} else if (strTag.indexOf("?") === 0) {
strOpen = "<?";
strClose = "?>";
strType = "pi";
} else strType = "element";
if (strClose !== "") {
strText = "";
if (arrElementsUnparsedText[i].indexOf(strClose) > -1) strText = arrElementsUnparsedText[i];
else {
for (; i < arrElementsUnparsed.length && arrElementsUnparsedText[i].indexOf(strClose) === -1; i++) {
strText += arrElementsUnparsedText[i];
}
strText += arrElementsUnparsedText[i];
}
if (strText.substring(strOpen.length, strText.indexOf(strClose)) !== "") {
xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement(strType, "", "", xmleLastElement, strText.substring(strOpen.length, strText.indexOf(strClose)));
if (strType === "cdata") xmleLastElement.text += strText.substring(strOpen.length, strText.indexOf(strClose));
}
if (strText.indexOf(strClose) + strClose.length < strText.length) {
xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement("text", "", "", xmleLastElement, strText.substring(strText.indexOf(strClose) + strClose.length, strText.length));
if (strType === "cdata") xmleLastElement.text += strText.substring(strText.indexOf(strClose) + strClose.length, strText.length);
}
continue;
}
if (strText.replace(/ */, "") === "") strText = "";
if (arrElementsUnparsed[i].substring(1, 2) !== "/") {
if (iElements === 0) {
xmleLastElement = this.rootElement = new REXML_XMLElement(strType, strTag, strAttributes, null, strText);
iElements++;
if (strText !== "") xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement("text", "", "", xmleLastElement, strText);
} else if (arrElementsUnparsed[i].substring(arrElementsUnparsed[i].length - 2, arrElementsUnparsed[i].length - 1) !== "/") {
xmleLastElement = xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement(strType, strTag, strAttributes, xmleLastElement, strText);
iElements++;
if (strText !== "") xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement("text", "", "", xmleLastElement, strText);
} else {
xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement(strType, strTag, strAttributes, xmleLastElement, strText);
if (strText !== "") xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement("text", "", "", xmleLastElement, strText);
}
} else {
xmleLastElement = xmleLastElement.parentElement;
iElements--;
if (xmleLastElement && "" !== strText) {
xmleLastElement.text += strText;
xmleLastElement.childElements[xmleLastElement.childElements.length] = new REXML_XMLElement("text", "", "", xmleLastElement, strText);
}
}
}
}
function REXML_XMLElement(strType, strName, strAttributes, xmlParent, strText) {
this.type = strType;
this.name = strName;
this.attributeString = strAttributes;
this.attributes = null;
this.childElements = [];
this.parentElement = xmlParent;
this.text = strText; // text of element
this.getText = REXML_XMLElement_getText; // text of element and child elements
this.childElement = REXML_XMLElement_childElement;
this.attribute = REXML_XMLElement_attribute;
}
/**
* @return {string}
*/
function REXML_XMLElement_getText() {
if (this.type === "text" || this.type === "cdata") {
return this.text;
} else if (this.childElements.length) {
let L = "";
for (let i = 0; i < this.childElements.length; i++) {
L += this.childElements[i].getText();
}
return L;
} else return "";
}
/**
* @return {*}
*/
function REXML_XMLElement_childElement(strElementName) {
for (let i = 0; i < this.childElements.length; i++) if (this.childElements[i].name === strElementName) return this.childElements[i];
return null;
}
/**
* @return {string}
*/
function REXML_XMLElement_attribute(strAttributeName) {
if (!this.attributes) {
let reAttributes = new RegExp(" ([^= ]*)=", "g"); // matches attributes
if (this.attributeString.match(reAttributes) && this.attributeString.match(reAttributes).length) {
let arrAttributes = this.attributeString.match(reAttributes);
if (!arrAttributes.length) arrAttributes = null;
else for (let j = 0; j < arrAttributes.length; j++) {
arrAttributes[j] = [(arrAttributes[j] + "").replace(/[= ]/g, ""),
ParseAttribute(this.attributeString, (arrAttributes[j] + "").replace(/[= ]/g, ""))];
}
this.attributes = arrAttributes;
}
}
if (this.attributes) for (let i = 0; i < this.attributes.length; i++) if (this.attributes[i][0] === strAttributeName) return this.attributes[i][1];
return "";
}
/**
* @return {string}
*/
function ParseAttribute(str_input, Attribute) {
const str = str_input + ">";
let Attr;
if (str.indexOf(Attribute + "='") > -1) Attr = new RegExp(".*" + Attribute + "='([^']*)'.*>");
else if (str.indexOf(Attribute + '="') > -1) Attr = new RegExp(".*" + Attribute + '="([^"]*)".*>');
return str.replace(Attr, "$1");
}