Lianja

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. Lianja

llSuccess = .F.

// Load our PDF file.
loBd = createobject("CkBinData")
llSuccess = loBd.LoadFile("qa_data/helloWorld.pdf")
if (llSuccess <> .T.) then
    ? "Failed to load PDF file."
    release loBd
    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>

loXml = createobject("CkXml")
llSuccess = loXml.LoadXmlFile("qa_data/xml/xmlToContainPdf.xml")
if (llSuccess <> .T.) then
    ? "Failed to load XML file."
    release loBd
    release loXml
    return
endif

// Insert the PDF into the XML.
loXml.NewChild2("xyz|pdfData",loBd.GetEncoded("base64"))

// Show the new XML:
? loXml.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:
loBd2 = createobject("CkBinData")
llSuccess = loBd2.AppendEncoded(loXml.GetChildContent("xyz|pdfData"),"base64")
llSuccess = loBd2.WriteFile("qa_output/helloWorld.pdf")

? "Success."


release loBd
release loXml
release loBd2