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DataFlex Examples

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

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.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoBd
    Boolean iSuccess
    Handle hoXml
    Handle hoBd2
    String sTemp1

    //  Load our PDF file.
    Get Create (RefClass(cComChilkatBinData)) To hoBd
    If (Not(IsComObjectCreated(hoBd))) Begin
        Send CreateComObject of hoBd
    End
    Get ComLoadFile Of hoBd "qa_data/helloWorld.pdf" To iSuccess
    If (iSuccess <> True) Begin
        Showln "Failed to load PDF file."
        Procedure_Return
    End

    //  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>

    Get Create (RefClass(cComChilkatXml)) To hoXml
    If (Not(IsComObjectCreated(hoXml))) Begin
        Send CreateComObject of hoXml
    End
    Get ComLoadXmlFile Of hoXml "qa_data/xml/xmlToContainPdf.xml" To iSuccess
    If (iSuccess <> True) Begin
        Showln "Failed to load XML file."
        Procedure_Return
    End

    //  Insert the PDF into the XML.
    Get ComGetEncoded Of hoBd "base64" To sTemp1
    Send ComNewChild2 To hoXml "xyz|pdfData" sTemp1

    //  Show the new XML:
    Get ComGetXml Of hoXml To sTemp1
    Showln sTemp1

    //  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:
    Get Create (RefClass(cComChilkatBinData)) To hoBd2
    If (Not(IsComObjectCreated(hoBd2))) Begin
        Send CreateComObject of hoBd2
    End
    Get ComGetChildContent Of hoXml "xyz|pdfData" To sTemp1
    Get ComAppendEncoded Of hoBd2 sTemp1 "base64" To iSuccess
    Get ComWriteFile Of hoBd2 "qa_output/helloWorld.pdf" To iSuccess

    Showln "Success."


End_Procedure

 

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