338 lines
8.9 KiB
JavaScript
338 lines
8.9 KiB
JavaScript
/*
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The below work is licensed under Creative Commons GNU LGPL License.
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Original work:
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License: http://creativecommons.org/licenses/LGPL/2.1/
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Author: Stefan Goessner/2006
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Web: http://goessner.net/
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Modifications made:
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Version: 0.9-p5
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Description: Restructured code, JSLint validated (no strict whitespaces),
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added handling of empty arrays, empty strings, and int/floats values.
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Author: Michael Schøler/2008-01-29
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Web: http://michael.hinnerup.net/blog/2008/01/26/converting-json-to-xml-and-xml-to-json/
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Description: json2xml added support to convert functions as CDATA
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so it will be easy to write characters that cause some problems when convert
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Author: Tony Tomov
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*/
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/*global alert */
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var xmlJsonClass = {
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// Param "xml": Element or document DOM node.
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// Param "tab": Tab or indent string for pretty output formatting omit or use empty string "" to supress.
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// Returns: JSON string
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xml2json: function(xml, tab) {
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if (xml.nodeType === 9) {
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// document node
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xml = xml.documentElement;
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}
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var nws = this.removeWhite(xml);
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var obj = this.toObj(nws);
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var json = this.toJson(obj, xml.nodeName, "\t");
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return "{\n" + tab + (tab ? json.replace(/\t/g, tab) : json.replace(/\t|\n/g, "")) + "\n}";
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},
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// Param "o": JavaScript object
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// Param "tab": tab or indent string for pretty output formatting omit or use empty string "" to supress.
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// Returns: XML string
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json2xml: function(o, tab) {
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var toXml = function(v, name, ind) {
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var xml = "";
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var i, n;
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if (v instanceof Array) {
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if (v.length === 0) {
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xml += ind + "<"+name+">__EMPTY_ARRAY_</"+name+">\n";
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}
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else {
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for (i = 0, n = v.length; i < n; i += 1) {
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var sXml = ind + toXml(v[i], name, ind+"\t") + "\n";
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xml += sXml;
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}
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}
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}
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else if (typeof(v) === "object") {
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var hasChild = false;
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xml += ind + "<" + name;
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var m;
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for (m in v) if (v.hasOwnProperty(m)) {
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if (m.charAt(0) === "@") {
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xml += " " + m.substr(1) + "=\"" + v[m].toString() + "\"";
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}
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else {
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hasChild = true;
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}
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}
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xml += hasChild ? ">" : "/>";
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if (hasChild) {
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for (m in v) if (v.hasOwnProperty(m)) {
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if (m === "#text") {
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xml += v[m];
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}
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else if (m === "#cdata") {
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xml += "<![CDATA[" + v[m] + "]]>";
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}
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else if (m.charAt(0) !== "@") {
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xml += toXml(v[m], m, ind+"\t");
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}
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}
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xml += (xml.charAt(xml.length - 1) === "\n" ? ind : "") + "</" + name + ">";
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}
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}
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else if (typeof(v) === "function") {
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xml += ind + "<" + name + ">" + "<![CDATA[" + v + "]]>" + "</" + name + ">";
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}
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else {
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if (v.toString() === "\"\"" || v.toString().length === 0) {
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xml += ind + "<" + name + ">__EMPTY_STRING_</" + name + ">";
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}
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else {
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xml += ind + "<" + name + ">" + v.toString() + "</" + name + ">";
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}
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}
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return xml;
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};
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var xml = "";
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var m;
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for (m in o) if (o.hasOwnProperty(m)) {
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xml += toXml(o[m], m, "");
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}
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return tab ? xml.replace(/\t/g, tab) : xml.replace(/\t|\n/g, "");
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},
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// Internal methods
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toObj: function(xml) {
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var o = {};
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var FuncTest = /function/i;
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if (xml.nodeType === 1) {
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// element node ..
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if (xml.attributes.length) {
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// element with attributes ..
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var i;
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for (i = 0; i < xml.attributes.length; i += 1) {
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o["@" + xml.attributes[i].nodeName] = (xml.attributes[i].nodeValue || "").toString();
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}
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}
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if (xml.firstChild) {
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// element has child nodes ..
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var textChild = 0, cdataChild = 0, hasElementChild = false;
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var n;
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for (n = xml.firstChild; n; n = n.nextSibling) {
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if (n.nodeType === 1) {
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hasElementChild = true;
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}
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else if (n.nodeType === 3 && n.nodeValue.match(/[^ \f\n\r\t\v]/)) {
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// non-whitespace text
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textChild += 1;
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}
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else if (n.nodeType === 4) {
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// cdata section node
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cdataChild += 1;
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}
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}
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if (hasElementChild) {
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if (textChild < 2 && cdataChild < 2) {
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// structured element with evtl. a single text or/and cdata node ..
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this.removeWhite(xml);
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for (n = xml.firstChild; n; n = n.nextSibling) {
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if (n.nodeType === 3) {
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// text node
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o["#text"] = this.escape(n.nodeValue);
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}
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else if (n.nodeType === 4) {
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// cdata node
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if (FuncTest.test(n.nodeValue)) {
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o[n.nodeName] = [o[n.nodeName], n.nodeValue];
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} else {
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o["#cdata"] = this.escape(n.nodeValue);
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}
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}
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else if (o[n.nodeName]) {
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// multiple occurence of element ..
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if (o[n.nodeName] instanceof Array) {
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o[n.nodeName][o[n.nodeName].length] = this.toObj(n);
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}
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else {
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o[n.nodeName] = [o[n.nodeName], this.toObj(n)];
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}
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}
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else {
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// first occurence of element ..
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o[n.nodeName] = this.toObj(n);
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}
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}
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}
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else {
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// mixed content
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if (!xml.attributes.length) {
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o = this.escape(this.innerXml(xml));
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}
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else {
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o["#text"] = this.escape(this.innerXml(xml));
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}
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}
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}
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else if (textChild) {
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// pure text
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if (!xml.attributes.length) {
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o = this.escape(this.innerXml(xml));
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if (o === "__EMPTY_ARRAY_") {
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o = "[]";
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} else if (o === "__EMPTY_STRING_") {
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o = "";
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}
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}
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else {
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o["#text"] = this.escape(this.innerXml(xml));
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}
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}
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else if (cdataChild) {
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// cdata
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if (cdataChild > 1) {
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o = this.escape(this.innerXml(xml));
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}
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else {
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for (n = xml.firstChild; n; n = n.nextSibling) {
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if(FuncTest.test(xml.firstChild.nodeValue)) {
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o = xml.firstChild.nodeValue;
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break;
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} else {
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o["#cdata"] = this.escape(n.nodeValue);
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}
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}
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}
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}
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}
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if (!xml.attributes.length && !xml.firstChild) {
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o = null;
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}
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}
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else if (xml.nodeType === 9) {
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// document.node
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o = this.toObj(xml.documentElement);
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}
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else {
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alert("unhandled node type: " + xml.nodeType);
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}
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return o;
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},
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toJson: function(o, name, ind, wellform) {
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if(wellform === undefined) wellform = true;
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var json = name ? ("\"" + name + "\"") : "", tab = "\t", newline = "\n";
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if(!wellform) {
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tab= ""; newline= "";
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}
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if (o === "[]") {
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json += (name ? ":[]" : "[]");
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}
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else if (o instanceof Array) {
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var n, i, ar=[];
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for (i = 0, n = o.length; i < n; i += 1) {
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ar[i] = this.toJson(o[i], "", ind + tab, wellform);
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}
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json += (name ? ":[" : "[") + (ar.length > 1 ? (newline + ind + tab + ar.join(","+newline + ind + tab) + newline + ind) : ar.join("")) + "]";
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}
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else if (o === null) {
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json += (name && ":") + "null";
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}
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else if (typeof(o) === "object") {
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var arr = [], m;
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for (m in o) {
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if (o.hasOwnProperty(m)) {
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arr[arr.length] = this.toJson(o[m], m, ind + tab, wellform);
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}
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}
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json += (name ? ":{" : "{") + (arr.length > 1 ? (newline + ind + tab + arr.join(","+newline + ind + tab) + newline + ind) : arr.join("")) + "}";
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}
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else if (typeof(o) === "string") {
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/*
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var objRegExp = /(^-?\d+\.?\d*$)/;
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var FuncTest = /function/i;
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var os = o.toString();
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if (objRegExp.test(os) || FuncTest.test(os) || os==="false" || os==="true") {
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// int or float
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json += (name && ":") + "\"" +os + "\"";
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}
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else {
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*/
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json += (name && ":") + "\"" + o.replace(/\\/g,'\\\\').replace(/\"/g,'\\"') + "\"";
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//}
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}
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else {
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json += (name && ":") + "\"" + o.toString()+ "\"";
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}
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return json;
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},
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innerXml: function(node) {
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var s = "";
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if ("innerHTML" in node) {
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s = node.innerHTML;
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}
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else {
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var asXml = function(n) {
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var s = "", i;
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if (n.nodeType === 1) {
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s += "<" + n.nodeName;
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for (i = 0; i < n.attributes.length; i += 1) {
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s += " " + n.attributes[i].nodeName + "=\"" + (n.attributes[i].nodeValue || "").toString() + "\"";
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}
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if (n.firstChild) {
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s += ">";
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for (var c = n.firstChild; c; c = c.nextSibling) {
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s += asXml(c);
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}
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s += "</" + n.nodeName + ">";
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}
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else {
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s += "/>";
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}
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}
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else if (n.nodeType === 3) {
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s += n.nodeValue;
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}
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else if (n.nodeType === 4) {
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s += "<![CDATA[" + n.nodeValue + "]]>";
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}
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return s;
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};
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for (var c = node.firstChild; c; c = c.nextSibling) {
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s += asXml(c);
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}
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}
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return s;
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},
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escape: function(txt) {
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return txt.replace(/[\\]/g, "\\\\").replace(/[\"]/g, '\\"').replace(/[\n]/g, '\\n').replace(/[\r]/g, '\\r');
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},
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removeWhite: function(e) {
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e.normalize();
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var n;
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for (n = e.firstChild; n; ) {
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if (n.nodeType === 3) {
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// text node
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if (!n.nodeValue.match(/[^ \f\n\r\t\v]/)) {
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// pure whitespace text node
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var nxt = n.nextSibling;
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e.removeChild(n);
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n = nxt;
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}
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else {
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n = n.nextSibling;
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}
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}
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else if (n.nodeType === 1) {
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// element node
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this.removeWhite(n);
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n = n.nextSibling;
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}
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else {
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// any other node
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n = n.nextSibling;
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}
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}
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return e;
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}
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}; |