Add ProjectDownloaderStub class

Author: adazem009

src/internal/CMakeLists.txt

@@ -26,4 +26,10 @@ if (LIBSCRATCHCPP_NETWORK_SUPPORT)
 	projectdownloader.cpp
 	projectdownloader.h
     )
+else()
+    target_sources(scratchcpp
+      PRIVATE
+        projectdownloaderstub.cpp
+	projectdownloaderstub.h
+)
 endif()

src/internal/projectdownloaderstub.cpp

@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#include "projectdownloaderstub.h"
+
+using namespace libscratchcpp;
+
+ProjectDownloaderStub::ProjectDownloaderStub()
+{
+}
+
+bool ProjectDownloaderStub::downloadJson(const std::string &)
+{
+    return false;
+}
+
+bool ProjectDownloaderStub::downloadAssets(const std::vector<std::string> &)
+{
+    return false;
+}
+
+void ProjectDownloaderStub::cancel()
+{
+}
+
+const std::string &ProjectDownloaderStub::json() const
+{
+    static const std::string empty;
+    return empty;
+}
+
+const std::vector<std::string> &ProjectDownloaderStub::assets() const
+{
+    static const std::vector<std::string> empty;
+    return empty;
+}
+
+unsigned int ProjectDownloaderStub::downloadedAssetCount() const
+{
+    return 0;
+}

src/internal/projectdownloaderstub.h

@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "iprojectdownloader.h"
+
+namespace libscratchcpp
+{
+
+class ProjectDownloaderStub : public IProjectDownloader
+{
+    public:
+        ProjectDownloaderStub();
+
+        bool downloadJson(const std::string &) override;
+        bool downloadAssets(const std::vector<std::string> &) override;
+        void cancel() override;
+
+        const std::string &json() const override;
+        const std::vector<std::string> &assets() const override;
+        unsigned int downloadedAssetCount() const override;
+};
+
+} // namespace libscratchcpp