Make UIC 913.8 header and the U_HEAD block structure externally usable

Needed by KItinerary Workbench, but also useful for use from extractor
scripts.

src/lib/CMakeLists.txt

@@ -259,6 +259,7 @@ ecm_generate_headers(KItinerary_Pdf_FORWARDING_HEADERS
 ecm_generate_headers(KItinerary_Uic9183_FORWARDING_HEADERS
     HEADER_NAMES
         Rct2Ticket
+        Uic9183Header
         Uic9183Block
         Uic9183Parser
         Uic9183TicketLayout

src/lib/uic9183/uic9183head.cpp

@@ -8,6 +8,8 @@
 
 using namespace KItinerary;
 
+Uic9183Head::Uic9183Head() = default;
+
 // U_HEAD Block (version 1, size 53)
 // 4x issuing carrier id
 // 6x PNR
@@ -24,6 +26,8 @@ Uic9183Head::Uic9183Head(const Uic9183Block &block)
     }
 }
 
+Uic9183Head::~Uic9183Head() = default;
+
 bool Uic9183Head::isValid() const
 {
     return !m_data.isNull();

src/lib/uic9183/uic9183head.h

@@ -29,7 +29,9 @@ class KITINERARY_EXPORT Uic9183Head
     UIC_STR_PROPERTY(secondaryLanguage, 39, 2);
 
 public:
+    Uic9183Head();
     Uic9183Head(const Uic9183Block &block);
+    ~Uic9183Head();
 
     /** Returns @c true if this is a valid U_HEAD block. */
     bool isValid() const;
@@ -43,3 +45,4 @@ private:
 
 }
 
+Q_DECLARE_METATYPE(KItinerary::Uic9183Head)

src/lib/uic9183/uic9183parser.cpp

@@ -63,6 +63,9 @@ QVariant Uic9183Parser::block(const QString &name) const
         return {};
     }
 
+    if (name == QLatin1String(Uic9183Head::RecordId)) {
+        return QVariant::fromValue(findBlock<Uic9183Head>());
+    }
     if (name == QLatin1String("0080BL")) {
         return QVariant::fromValue(findBlock<Vendor0080BLBlock>());
     }