Objective-C

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. Objective-C

#import <CkoXml.h>
#import <NSString.h>

BOOL success = NO;

//  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>

CkoXml *xml = [[CkoXml alloc] init];

success = [xml LoadXmlFile: @"c:/temp/example.xml"];
if (success == NO) {
    NSLog(@"%@",xml.LastErrorText);
    return;
}

NSString *pdfFilename = [xml GetChildContent: @"GLTransactions|GLTransaction|Document|Attachments|Attachment|Name"];
if (xml.LastMethodSuccess == NO) {
    NSLog(@"%@",@"No XML element at the given path.");
    return;
}

NSLog(@"%@%@",@"PDF Filename = ",pdfFilename);

CkoXml *binaryDataElem = [xml GetChildWithTag: @"GLTransactions|GLTransaction|Document|Attachments|Attachment|BinaryData"];
if (xml.LastMethodSuccess == NO) {
    NSLog(@"%@",@"No XML element at the given path.");
    return;
}

//  Decode the base64 data and save to a file.
success = [binaryDataElem SaveBinaryContent: pdfFilename unzipFlag: NO decryptFlag: NO password: @""];
if (success == NO) {
    NSLog(@"%@",binaryDataElem.LastErrorText);
}
else {
    NSLog(@"%@",@"Success.");
}