feat: add windows-spec console patch

src/yycc/windows/console.cpp

@@ -0,0 +1,38 @@
+#include "console.hpp"
+#if defined(YYCC_OS_WINDOWS) && defined(YYCC_STL_MSSTL)
+
+#include <cstdio>
+
+#include "import_guard_head.hpp"
+#include <Windows.h>
+#include <io.h>
+#include "import_guard_tail.hpp"
+
+namespace yycc::windows::console {
+
+    static ExecResult<void> colorful_fs(FILE* fs) {
+        if (!_isatty(_fileno(fs))) {
+            return std::unexpected(ExecError::NotTty);
+        }
+
+        HANDLE h_output;
+        DWORD dw_mode;
+
+        h_output = (HANDLE) _get_osfhandle(_fileno(fs));
+        if (!GetConsoleMode(h_output, &dw_mode)) {
+            return std::unexpected(ExecError::GetMode);
+        }
+        if (!SetConsoleMode(h_output, dw_mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING | ENABLE_PROCESSED_OUTPUT)) {
+            return std::unexpected(ExecError::SetMode);
+        }
+
+        return {};
+    }
+
+    ExecResult<void> colorful_console() {
+        return colorful_fs(stdout).and_then([]() { return colorful_fs(stderr); });
+    }
+
+} // namespace yycc::windows::console
+
+#endif

src/yycc/windows/console.hpp

@@ -0,0 +1,33 @@
+#pragma once
+#include "../macro/os_detector.hpp"
+#include "../macro/stl_detector.hpp"
+#if defined(YYCC_OS_WINDOWS) && defined(YYCC_STL_MSSTL)
+
+#include <expected>
+
+/**
+ * @brief The namespace provide patches for Windows console.
+ */
+namespace yycc::windows::console {
+
+    /// @brief Error occurs in this module.
+    enum class ExecError {
+        NotTty,  ///< Given stream is not TTY.
+        GetMode, ///< Can not get stream mode.
+        SetMode, ///< Can not set stream mode.
+    };
+
+    /// @brief Result type used in this module.
+    template<typename T>
+    using ExecResult = std::expected<T, ExecError>;
+
+    /**
+	 * @brief Enable console color support for Windows.
+	 * @details This actually is enable virtual console feature for \c stdout and \c stderr.
+	 * @return Nothing or error occurs.
+	*/
+    ExecResult<void> colorful_console();
+
+}
+
+#endif