init

components/windows/src/context.cpp

@@ -0,0 +1,105 @@
+/* Copyright (c) 2023, Thomas Atkinson
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 the "License";
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "windows/context.hpp"
+
+#include <Windows.h>
+#include <cassert>
+#include <stdexcept>
+
+namespace vkb
+{
+
+inline const std::string get_temp_path_from_environment()
+{
+	std::string temp_path = "temp/";
+
+	TCHAR temp_buffer[MAX_PATH];
+	DWORD temp_path_ret = GetTempPath(MAX_PATH, temp_buffer);
+	if (temp_path_ret > MAX_PATH || temp_path_ret == 0)
+	{
+		temp_path = "temp/";
+	}
+	else
+	{
+		temp_path = std::string(temp_buffer) + "/";
+	}
+
+	return temp_path;
+}
+
+/// @brief Converts wstring to string using Windows specific function
+/// @param wstr Wide string to convert
+/// @return A converted utf8 string
+inline std::string wstr_to_str(const std::wstring &wstr)
+{
+	if (wstr.empty())
+	{
+		return {};
+	}
+
+	auto wstr_len = static_cast<int>(wstr.size());
+	auto str_len  = WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr_len, NULL, 0, NULL, NULL);
+
+	std::string str(str_len, 0);
+	WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr_len, &str[0], str_len, NULL, NULL);
+
+	return str;
+}
+
+inline std::vector<std::string> get_args()
+{
+	LPWSTR *argv;
+	int     argc;
+
+	argv = CommandLineToArgvW(GetCommandLineW(), &argc);
+
+	// Ignore the first argument containing the application full path
+	std::vector<std::wstring> arg_strings(argv + 1, argv + argc);
+	std::vector<std::string>  args;
+
+	for (auto &arg : arg_strings)
+	{
+		args.push_back(wstr_to_str(arg));
+	}
+
+	return args;
+}
+
+WindowsPlatformContext::WindowsPlatformContext(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR lpCmdLine, INT nCmdShow) :
+    PlatformContext{}
+{
+	_external_storage_directory = "";
+	_temp_directory             = get_temp_path_from_environment();
+	_arguments                  = get_args();
+
+	// Attempt to attach to the parent process console if it exists
+	if (!AttachConsole(ATTACH_PARENT_PROCESS))
+	{
+		// No parent console, allocate a new one for this process
+		if (!AllocConsole())
+		{
+			throw std::runtime_error{"AllocConsole error"};
+		}
+	}
+
+	FILE *fp;
+	freopen_s(&fp, "conin$", "r", stdin);
+	freopen_s(&fp, "conout$", "w", stdout);
+	freopen_s(&fp, "conout$", "w", stderr);
+}
+}        // namespace vkb

components/windows/src/entrypoint.cpp

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+/* Copyright (c) 2023, Thomas Atkinson
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 the "License";
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <core/platform/entrypoint.hpp>
+
+#include "windows/context.hpp"
+#include <Windows.h>
+
+std::unique_ptr<vkb::PlatformContext> create_platform_context(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR lpCmdLine, INT nCmdShow)
+{
+	return std::make_unique<vkb::WindowsPlatformContext>(hInstance, hPrevInstance, lpCmdLine, nCmdShow);
+}