Add gcptest

CMakeLists.txt

@@ -40,3 +40,6 @@ target_link_libraries(Demo
 	DLib
 )
 
+add_executable(GCPTest src/gcptest.cpp)
+target_link_libraries(GCPTest
+PRIVATE CURL::libcurl google-cloud-cpp::storage google-cloud-cpp::storage_protos google-cloud-cpp::experimental-storage-grpc spdlog::spdlog_header_only)

src/gcptest.cpp

@@ -0,0 +1,52 @@
+#include "google/cloud/storage/client.h"
+#include <iostream>
+
+bool ParseGcsUri(const std::string& gcs_uri, std::string& bucket_name, std::string& object_name) {
+    const std::string prefix = "gs://";
+    if (gcs_uri.compare(0, prefix.size(), prefix) != 0) {
+        std::cerr << "Invalid GCS URI: " << gcs_uri << "\n";
+        return false;
+    }
+
+    std::size_t pos = gcs_uri.find('/', prefix.size());
+    if (pos == std::string::npos) {
+        std::cerr << "Invalid GCS URI, missing object name: " << gcs_uri << "\n";
+        return false;
+    }
+
+    bucket_name = gcs_uri.substr(prefix.size(), pos - prefix.size());
+    object_name = gcs_uri.substr(pos + 1);
+
+    return true;
+}
+
+
+int main(int argc, char* argv[]) {
+	if (argc != 2) {
+		std::cerr << "Missing URI.\n";
+		std::cerr << "Usage: GCPTest URI\n";
+		return 1;
+	}
+	std::string const uri = argv[1];
+	std::string bucket_name, object_name;
+	ParseGcsUri(uri, bucket_name, object_name);
+
+	// Create aliases to make the code easier to read.
+	namespace gcs = ::google::cloud::storage;
+
+	// Create a client to communicate with Google Cloud Storage. This client
+	// uses the default configuration for authentication and project id.
+	auto client = gcs::Client();
+
+	auto object_metadata = client.GetObjectMetadata(bucket_name, object_name);
+	if (object_metadata) {
+		std::cout << "Object size: " << object_metadata->size() << "\n";
+	} else if (object_metadata.status().code() == google::cloud::StatusCode::kNotFound) {
+		std::cout << "Object not found!\n";
+
+	} else {
+		std::cerr << "Error checking object: " << object_metadata.status().message() << "\n";
+	}
+
+	return 0;
+}