Proof-of-concept of JSON export limited to PrimeMeridian (refs #1545)

1 files changed, 20 insertions, 0 deletions

diff --git a/src/iso19111/metadata.cpp b/src/iso19111/metadata.cpp
index 3725b072..761b909b 100644
--- a/src/iso19111/metadata.cpp
+++ b/src/iso19111/metadata.cpp
@@ -1088,6 +1088,26 @@ void Identifier::_exportToWKT(WKTFormatter *formatter) const {
         }
     }
 }
+
+// ---------------------------------------------------------------------------
+
+void Identifier::_exportToJSON(JSONFormatter *formatter) const {
+    const std::string &l_code = code();
+    const std::string &l_codeSpace = *codeSpace();
+    if (!l_codeSpace.empty() && !l_code.empty()) {
+        auto &writer = formatter->writer();
+        PROJ::CPLJSonStreamingWriter::ObjectContext objContext(writer);
+        writer.AddObjKey("authority");
+        writer.Add(l_codeSpace);
+        writer.AddObjKey("code");
+        try {
+            writer.Add(std::stoi(l_code));
+        } catch (const std::exception &) {
+            writer.Add(l_code);
+        }
+    }
+}
+
 //! @endcond
 
 // ---------------------------------------------------------------------------