JavaScript

Insert PDF as Base64 into XML, then Extract back to PDF File

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Demonstrates how to insert any file into XML using base64 encoding, and then extract back to the original file. This example embeds a PDF in the XML, but the type of file does not matter. It can be any type of file. JavaScript

var success = false;

// Load our PDF file.
var bd = new CkBinData();
success = bd.LoadFile("qa_data/helloWorld.pdf");
if (success !== true) {
    console.log("Failed to load PDF file.");
    return;
}

// Load the following XML:
// 
// <?xml version="1.0" encoding="utf-8" ?>
// <something>
//     <xyz>
//         <abc123>A base64 encoded PDF file will be inserted under this node.</abc123>
//     </xyz>
// </something>

var xml = new CkXml();
success = xml.LoadXmlFile("qa_data/xml/xmlToContainPdf.xml");
if (success !== true) {
    console.log("Failed to load XML file.");
    return;
}

// Insert the PDF into the XML.
xml.NewChild2("xyz|pdfData",bd.GetEncoded("base64"));

// Show the new XML:
console.log(xml.GetXml());

// The XML now looks like this:
// <?xml version="1.0" encoding="utf-8" ?>
// <something>
//     <xyz>
//         <abc123>A base64 encoded PDF file will be inserted under this node.</abc123>
//         <pdfData>JVBERi0xL ... UlRU9GCg==</pdfData>
//     </xyz>
// </something>

// To extract the PDF data out and restore the PDF file:
var bd2 = new CkBinData();
success = bd2.AppendEncoded(xml.GetChildContent("xyz|pdfData"),"base64");
success = bd2.WriteFile("qa_output/helloWorld.pdf");

console.log("Success.");