Initial commit.

include/os/tty.hpp

@@ -0,0 +1,51 @@
+
+#pragma once
+
+#if !defined(OS_TTY_HPP_INCLUDED)
+#define OS_TTY_HPP_INCLUDED 1
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace tty
+{
+enum class VgaColor : uint8_t
+{
+	BLACK = 0,
+	BLUE = 1,
+	GREEN = 2,
+	CYAN = 3,
+	RED = 4,
+	MAGENTA = 5,
+	BROWN = 6,
+	LIGHT_GREY = 7,
+	DARK_GREY = 8,
+	LIGHT_BLUE = 9,
+	LIGHT_GREEN = 10,
+	LIGHT_CYAN = 11,
+	LIGHT_RED = 12,
+	LIGHT_MAGENTA = 13,
+	LIGHT_BROWN = 14,
+	WHITE = 15
+};
+
+struct VgaDoubleColor
+{
+    VgaColor foreground : 4 = VgaColor::LIGHT_GREY;
+    VgaColor background : 4 = VgaColor::BLACK;
+};
+
+[[nodiscard]] size_t strlen(const char* str); // TODO: move to standard lib
+void initialize();
+void setColor(VgaDoubleColor color);
+void putEntryAt(char chr, VgaDoubleColor color, size_t posX, size_t posY);
+void putChar(char chr);
+void write(const char* data, size_t size);
+
+inline void write(const char* data)
+{
+    write(data, strlen(data));
+}
+} // namespace tty
+
+#endif // OS_TTY_HPP_INCLUDED