CRS identification: use case insensitive comparison for authority name (fixes #1779)

2 files changed, 12 insertions, 7 deletions

diff --git a/src/iso19111/factory.cpp b/src/iso19111/factory.cpp
index 57850303..0ef07337 100644
--- a/src/iso19111/factory.cpp
+++ b/src/iso19111/factory.cpp
@@ -1433,9 +1433,17 @@ AuthorityFactory::AuthorityFactory(const DatabaseContextNNPtr &context,
 AuthorityFactoryNNPtr
 AuthorityFactory::create(const DatabaseContextNNPtr &context,
                          const std::string &authorityName) {
-
-    auto factory = AuthorityFactory::nn_make_shared<AuthorityFactory>(
-        context, authorityName);
+    const auto getFactory = [&context, &authorityName]() {
+        for (const auto &knownName : {"EPSG", "ESRI", "PROJ"}) {
+            if (ci_equal(authorityName, knownName)) {
+                return AuthorityFactory::nn_make_shared<AuthorityFactory>(
+                    context, knownName);
+            }
+        }
+        return AuthorityFactory::nn_make_shared<AuthorityFactory>(
+            context, authorityName);
+    };
+    auto factory = getFactory();
     factory->d->setThis(factory);
     return factory;
 }
diff --git a/src/iso19111/io.cpp b/src/iso19111/io.cpp
index 2aec5fac..e0e6152a 100644
--- a/src/iso19111/io.cpp
+++ b/src/iso19111/io.cpp
@@ -5669,10 +5669,7 @@ static BaseObjectNNPtr createFromUserInput(const std::string &text,
         DatabaseContextNNPtr dbContextNNPtr(NN_NO_CHECK(dbContext));
         const auto &authName = tokens[0];
         const auto &code = tokens[1];
-        static const std::string epsg_lowercase("epsg");
-        auto factory = AuthorityFactory::create(
-            dbContextNNPtr,
-            authName == epsg_lowercase ? Identifier::EPSG : authName);
+        auto factory = AuthorityFactory::create(dbContextNNPtr, authName);
         try {
             return factory->createCoordinateReferenceSystem(code);
         } catch (...) {