Dart

Extract PDF from General Ledger Transactions XML

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Demonstrates how to extract the base64 data representing a PDF file from a General Ledger Transactions XML. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // The General Ledger Transactions XML contains the following:

  // <?xml version="1.0" encoding="utf-8" ?>
  // <eExact xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="eExact-XML.xsd">
  //     <GLTransactions>
  //         <GLTransaction entry="100000095">
  //             <TransactionType number="20" />
  //             <Journal type="20" code="VK">
  //                 <Description termid="90003">Verkopen</Description>
  //                 <GLAccount type="20" code="400000" />
  //                 <Currency code="EUR" />
  //             </Journal>
  //             <Date>2022-04-05</Date>
  //             <Document>
  //                 <Subject>100000095</Subject>
  //                 <DocumentType number="10" />
  //                 <Account code="0001" status="C" />
  //                 <Amount>
  //                     <Currency code="EUR" />
  //                     <Value>1382.91</Value>
  //                 </Amount>
  //                 <References>
  //                     <InvoiceNumber>100000095</InvoiceNumber>
  //                 </References>
  //                 <Attachments>
  //                     <Attachment>
  //                         <Name>F_100000095.PDF</Name>
  //                         <BinaryData>BASE64_ENCODED_PDF_BYTES_HERE</BinaryData>
  //                     </Attachment>
  //                 </Attachments>
  //             </Document>
  //             <GLTransactionLine type="20" status="20" line="0" linetype="0">
  //                 <Date>2022-04-05</Date>
  //                 <VATType>S</VATType>
  //                 <FinYear number="2022" />
  //                 <FinPeriod number="4" />
  //                 <GLAccount type="20" code="400000" />
  //                 <Description>100000095</Description>
  //                 <DueDate>2022-05-05</DueDate>
  //                 <Account code="0001" status="C">
  //                     <Name>90 Degrees &amp; co</Name>
  //                 </Account>
  //                 <Amount>
  //                     <Currency code="EUR" />
  //                     <Value>1382.91</Value>
  //                 </Amount>
  //                 <ForeignAmount>
  //                     <Currency code="EUR" />
  //                     <Value>1382.91</Value>
  //                     <Rate>1</Rate>
  //                 </ForeignAmount>
  //                 <References>
  //                     <InvoiceNumber>100000095</InvoiceNumber>
  //                 </References>
  //             </GLTransactionLine>
  //             <PaymentTerms>
  //                 <PaymentTerm entry="100000095" type="20" line="0" paymentMethod="B">
  //                     <Description>20</Description>
  //                     <GLAccount type="20" code="400000" />
  //                     <Amount>
  //                         <Currency code="EUR" />
  //                         <Debit>1382.91</Debit>
  //                         <Credit>0</Credit>
  //                     </Amount>
  //                     <ForeignAmount>
  //                         <Currency code="EUR" />
  //                         <Debit>1382.91</Debit>
  //                         <Credit>0</Credit>
  //                     </ForeignAmount>
  //                     <Reference />
  //                     <YourRef />
  //                     <InvoiceNumber>100000095</InvoiceNumber>
  //                     <InvoiceDate>2022-04-05</InvoiceDate>
  //                     <DueDate>2022-05-05</DueDate>
  //                     <PaymentDate>2022-05-05</PaymentDate>
  //                 </PaymentTerm>
  //             </PaymentTerms>
  //         </GLTransaction>
  //     </GLTransactions>
  // </eExact>

  final xml = CkXml();

  try {
    xml.loadXmlFile('c:/temp/example.xml');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final String pdfFilename;
  try {
    pdfFilename = xml.getChildContent('GLTransactions|GLTransaction|Document|Attachments|Attachment|Name');
  } on ChilkatException {
    print('No XML element at the given path.');
    return;
  }

  print('PDF Filename = $pdfFilename');

  final CkXml binaryDataElem;
  try {
    binaryDataElem = xml.getChildWithTag('GLTransactions|GLTransaction|Document|Attachments|Attachment|BinaryData');
  } on ChilkatException {
    print('No XML element at the given path.');
    return;
  }

  // Decode the base64 data and save to a file.
  try {
    binaryDataElem.saveBinaryContent(pdfFilename, false, false, '');
    print('Success.');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
  }
}