[Podofo-users] How to extract embedded file from pdf?

[Sebastian Haag]

Hi all,

 

I managed to embed a file (or file content/string) into a PdfMemDocument. Now I want to extract it again and don´t find a way...

 

----- Embed file -------
PdfMemDocument document;

...

document.AttachFile( PdfFileSpec(TEMP_FILENAME,
                  (const unsigned char*)(fileData.toStdString().c_str()),
                  fileData.size(), &document) );
document.Write(pdfFilename);
------------

 

------ Extract file ------
PdfMemDocument* pdfDoc = new PdfMemDocument(pdfFilename);

PdfNamesTree* namesObj = pdfDoc->GetNamesTree( PoDoFo::ePdfDontCreateObject );
if( namesObj )
{
    PdfDictionary dict;
    namesObj->ToDictionary( PdfName("EmbeddedFiles"), dict );

    const TKeyMap& keys = dict.GetKeys();
    TCIKeyMap it = keys.begin();

    while( it != keys.end() )
    {
        qDebug() << (*it).first.GetName().c_str();

        // How to get the file content from filename?
    }
}
------------

 

I tried using a PdfMemStream but I didn´t get it to work. Any suggestions on how to get the embedded file back from the pdf?

 

Sebastian

 

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