Extract FDF data from a PDF on Server/Desktop

1PDFDoc doc(filename);
2
3// Extract annotations to FDF.
4// Optionally use e_both to extract both forms and annotations
5FDFDoc doc_fields = doc.FDFExtract(PDFDoc::e_annots_only); //PDFDoc::e_forms_only
6
7// Export annotations from FDF to XFDF.
8doc_fields.SaveAsXFDF(output_xfdf_filename);
9
10// Optionally write XFDF to a string
11UString XFDF_string = doc_fields.SaveAsXFDF();

1doc := NewPDFDoc(filename)
2
3// Extract annotations to FDF.
4// Optionally use e_both to extract both forms and annotations
5docFields := inDoc.FDFExtract(PDFDocE_annots_only) // PDFDocE_forms_only
6
7// Export annotations from FDF to XFDF.
8docFields.SaveAsXFDF(output_xfdf_filename)
9
10// Optionally write XFDF to a string
11xfdfStr := docFields.SaveAsXFDF()

1PDFDoc doc = new PDFDoc(filename);
2
3// Extract annotations to FDF.
4// Optionally use e_both to extract both forms and annotations
5FDFDoc doc_fields = doc.fdfExtract(PDFDoc.e_annots_only); //PDFDoc.e_forms_only
6
7// Export annotations from FDF to XFDF.
8doc_fields.saveAsXFDF(output_xfdf_filename);
9
10// Optionally write XFDF to a string
11String XFDF_string = doc_fields.saveAsXFDF();

1async function main() {
2  const doc = await PDFNet.PDFDoc.createFromURL(filename);
3
4  // Extract annotations to FDF.
5  // Optionally use e_both to extract both forms and annotations
6  const doc_fields = await doc.fdfExtract(PDFNet.PDFDoc.ExtractFlag.e_annots_only); //PDFNet.PDFDoc.ExtractFlag.e_forms_only
7
8  // Export annotations from FDF to XFDF.
9  const xfdf_data = await doc_fields.saveAsXFDFAsString();
10
11  //optionally save the blob to a file or upload to a server
12  const blob = new Blob([xfdf_data], { type: 'application/xml' });
13}
14PDFNet.runWithCleanup(main);

1PTPDFDoc *doc = [[PTPDFDoc alloc] initWithFilepath: filename];
2
3// Extract annotations to FDF.
4// Optionally use e_ptboth to extract both forms and annotations
5PTFDFDoc *doc_fields = [doc FDFExtract: e_ptannots_only]; //e_ptforms_only
6
7// Export annotations from FDF to XFDF.
8[doc_fields SaveAsXFDF: output_xfdf_filename];
9
10// Optionally write XFDF to a string
11NSString *XFDF_string = [doc_fields SaveAsXFDFToString];

1$doc = new PDFDoc($filename);
2
3// Extract annotations to FDF.
4// Optionally use e_both to extract both forms and annotations
5$doc_fields = $doc->FDFExtract(PDFDoc::e_annots_only); //PDFDoc::e_forms_only
6
7// Export annotations from FDF to XFDF.
8$doc_fields->SaveAsXFDF($output_xfdf_filename);
9
10// Optionally write XFDF to a string
11$XFDF_string = $doc_fields->SaveAsXFDF();

1doc = PDFDoc(filename)
2
3# Extract annotations to FDF.
4# Optionally use e_both to extract both forms and annotations
5doc_fields = doc.FDFExtract(PDFDoc.e_annots_only) #PDFDoc.e_forms_only
6
7# Export annotations from FDF to XFDF.
8doc_fields.SaveAsXFDF(output_xfdf_filename)
9
10# Optionally write XFDF to a string
11XFDF_string = doc_fields.SaveAsXFDF()

1doc = PDFDoc.new(filename)
2
3# Extract annotations to FDF.
4# Optionally use e_both to extract both forms and annotations
5doc_fields = doc.FDFExtract(PDFDoc::E_annot_only) #PDFDoc::E_forms_only
6
7# Export annotations from FDF to XFDF.
8doc_fields.SaveAsXFDF(output_xfdf_filename)
9
10# Optionally write XFDF to a string
11XFDF_string = doc_fields.SaveAsXFDF()

1Dim doc As PDFDoc = New PDFDoc(filename)
2
3' Extract annotations to FDF.
4' Optionally use e_both to extract both forms and annotations
5Dim doc_fields As FDFDoc = doc.FDFExtract(PDF.PDFDoc.ExtractFlag.e_annot_only) 'PDF.PDFDoc.ExtractFlag.e_forms_only
6
7' Export annotations from FDF to XFDF.
8doc_fields.SaveAsXFDF(output_xfdf_filename)
9
10' Optionally write XFDF to a string
11Dim XFDF_string As String = doc_fields.SaveAsXFDF()