Also extract VDV organization ids as provider identifier

Similar to the UIC company code we'll be able to use this to select
matching KPublicTransport backends for a given train ticket.

src/lib/scripts/deutschebahn.js

@@ -235,6 +235,8 @@ function parsePdf(pdf, node, triggerNode) {
                         break;
                 }
             }
+        } else if (triggerNode.mimeType == "internal/vdv") {
+            reservations[i].reservationFor.provider.identifier = "vdv:" + triggerNode.content.operatorId;
         }
         if (triggerNode.result.length > 0) {
             reservations[i].reservedTicket.name = triggerNode.result[0].reservedTicket.name;

src/lib/vdv/vdvticket.cpp

@@ -112,6 +112,12 @@ int VdvTicket::issuerId() const
     return hdr ? hdr->kvpOrgId : 0;
 }
 
+int VdvTicket::operatorId() const
+{
+    const auto hdr = header();
+    return hdr ? hdr->pvOrgId : 0;
+}
+
 VdvTicket::ServiceClass VdvTicket::serviceClass() const
 {
     const auto tlv = d->productData<VdvTicketBasicData>();

src/lib/vdv/vdvticket.h

@@ -36,6 +36,8 @@ class KITINERARY_EXPORT VdvTicket
 
     /** VDV organization identifier of the ticket issuer. */
     Q_PROPERTY(int issuerId READ issuerId)
+    /** VDV organization identifier of the operator. */
+    Q_PROPERTY(int operatorId READ operatorId)
     /** Service class for this ticket. */
     Q_PROPERTY(ServiceClass serviceClass READ serviceClass)
     /** The person this ticket is valid for. */
@@ -55,6 +57,7 @@ public:
     QDateTime beginDateTime() const;
     QDateTime endDateTime() const;
     int issuerId() const;
+    int operatorId() const;
 
     enum ServiceClass {
         UnknownClass = 0,