Xbase++

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. Xbase++

LOCAL nSuccess
LOCAL oBd
LOCAL oXml
LOCAL oBd2

nSuccess := 0

//  Load our PDF file.
oBd := CreateObject("Chilkat.BinData")
nSuccess := oBd:LoadFile("qa_data/helloWorld.pdf")
IF (nSuccess != 1)
    ? "Failed to load PDF file."
    oBd:destroy()
    RETURN
ENDIF

//  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>

oXml := CreateObject("Chilkat.Xml")
nSuccess := oXml:LoadXmlFile("qa_data/xml/xmlToContainPdf.xml")
IF (nSuccess != 1)
    ? "Failed to load XML file."
    oBd:destroy()
    oXml:destroy()
    RETURN
ENDIF

//  Insert the PDF into the XML.
oXml:NewChild2("xyz|pdfData", oBd:GetEncoded("base64"))

//  Show the new XML:
? oXml: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:
oBd2 := CreateObject("Chilkat.BinData")
nSuccess := oBd2:AppendEncoded(oXml:GetChildContent("xyz|pdfData"), "base64")
nSuccess := oBd2:WriteFile("qa_output/helloWorld.pdf")

? "Success."

oBd:destroy()
oXml:destroy()
oBd2:destroy()