Implemented simple IO for getting keyboard input.

targets/_any/include/drivers/ps2.hpp

@@ -4,6 +4,7 @@
 #if !defined(BAD_APPLE_OS_DRIVERS_PS2_HPP_INCLUDED)
 #define BAD_APPLE_OS_DRIVERS_PS2_HPP_INCLUDED
 
+#include <array>
 #include "drivers/pic.hpp"
 
 namespace baos::ps2
@@ -77,6 +78,7 @@ enum class Scancode
     ENTER = 0x5A,
     BRACKET_CLOSE = 0x5B,
     BACKSLASH = 0x5D,
+    GRAVE = 0x61,
     BACKSPACE = 0x66,
     KP_1 = 0x69,
     KP_4 = 0x6B,
@@ -98,46 +100,61 @@ enum class Scancode
     SCROLLOCK = 0x7E,
     F7 = 0x83,
 
-    MM_WWW_SEARCH = 0xE010,
-    RIGHT_ALT = 0xE011,
-    RIGHT_CONTROL = 0xE014,
-    MM_PREV_TRACK = 0xE015,
-    LEFT_GUI = 0xE01F,
-    MM_WWW_FAVORITES = 0xE020,
-    MM_VOLUME_DOWN = 0xE021,
-    MM_MUTE = 0xE023,
-    RIGHT_GUI = 0xE027,
-    MM_WWW_STOP = 0xE028,
-    MM_CALCULATOR = 0xE02B,
-    APPS = 0xE02F,
-    MM_WWW_FORWARD = 0xE030,
-    MM_VOLUME_UP = 0xE032,
-    MM_PLAY_PAUSE = 0xE034,
-    ACPI_POWER = 0xE037,
-    MM_WWW_BACK = 0xE038,
-    MM_WWW_HOME = 0xE03A,
-    MM_STOP = 0xE03B,
-    ACPI_SLEEP = 0xE03F,
-    MM_MY_COMPUTER = 0xE040,
-    MM_EMAIL = 0xE048,
-    KP_SLASH = 0xE04A,
-    MM_NEXT_TRACK = 0xE04D,
-    MM_MEDIA_SELECT = 0xE050,
-    KP_ENTER = 0xE05A,
-    ACPI_WAKE = 0xE05E,
-    END = 0xE069,
-    ARROW_LEFT = 0xE06B,
-    HOME = 0xE06C,
-    INSERT = 0xE070,
-    DELETE = 0xE071,
-    ARROW_DOWN = 0xE072,
-    ARROW_RIGHT = 0xE074,
-    ARROW_UP = 0xE075,
-    PAGE_DOWN = 0xE07A,
-    PAGE_UP = 0xE07D,
+    MM_WWW_SEARCH = 0x0110,
+    RIGHT_ALT = 0x0111,
+    RIGHT_CONTROL = 0x0114,
+    MM_PREV_TRACK = 0x0115,
+    LEFT_GUI = 0x011F,
+    MM_WWW_FAVORITES = 0x0120,
+    MM_VOLUME_DOWN = 0x0121,
+    MM_MUTE = 0x0123,
+    RIGHT_GUI = 0x0127,
+    MM_WWW_STOP = 0x0128,
+    MM_CALCULATOR = 0x012B,
+    APPS = 0x012F,
+    MM_WWW_FORWARD = 0x0130,
+    MM_VOLUME_UP = 0x0132,
+    MM_PLAY_PAUSE = 0x0134,
+    ACPI_POWER = 0x0137,
+    MM_WWW_BACK = 0x0138,
+    MM_WWW_HOME = 0x013A,
+    MM_STOP = 0x013B,
+    ACPI_SLEEP = 0x013F,
+    MM_MY_COMPUTER = 0x0140,
+    MM_EMAIL = 0x0148,
+    KP_SLASH = 0x014A,
+    MM_NEXT_TRACK = 0x014D,
+    MM_MEDIA_SELECT = 0x0150,
+    KP_ENTER = 0x015A,
+    ACPI_WAKE = 0x015E,
+    END = 0x0169,
+    ARROW_LEFT = 0x016B,
+    HOME = 0x016C,
+    INSERT = 0x0170,
+    DELETE = 0x0171,
+    ARROW_DOWN = 0x0172,
+    ARROW_RIGHT = 0x0174,
+    ARROW_UP = 0x0175,
+    PAGE_DOWN = 0x017A,
+    PAGE_UP = 0x017D,
 
-    PRINT_SCREEN = 0xF000,
-    PAUSE = 0xF001
+    PRINT_SCREEN = 0x017E,
+    PAUSE = 0x017F
+};
+inline constexpr std::uint16_t MAX_SCANCODE = static_cast<std::uint16_t>(Scancode::PAUSE) + 1;
+
+struct Keymap
+{
+    std::array<char, MAX_SCANCODE> regularKeys;
+    std::array<char, MAX_SCANCODE> shiftedKeys;
+    std::array<char, MAX_SCANCODE> altGredKeys;
+
+    constexpr void set(Scancode scancode, char regular, char shifted = '\0', char altgred = '\0') noexcept
+    {
+        regularKeys[static_cast<unsigned>(scancode)] = regular;
+        shiftedKeys[static_cast<unsigned>(scancode)] = shifted;
+        altGredKeys[static_cast<unsigned>(scancode)] = altgred;
+    }
 };
 
 struct KeyEvent
@@ -152,8 +169,11 @@ struct KeyEvent
 __attribute__((interrupt))
 void isrKeyboard(InterruptFrame* interruptFrame) noexcept;
 
+[[nodiscard]] bool isKeyDown(Scancode scancode) noexcept;
 [[nodiscard]] bool readKey(KeyEvent& outEvent) noexcept;
+[[nodiscard]] bool readChar(char& outChar) noexcept;
 [[nodiscard]] const char* keyName(Scancode scancode) noexcept;
+[[nodiscard]] bool keyToChar(Scancode scancode, char& outChar) noexcept;
 }
 
 #endif // !defined(BAD_APPLE_OS_DRIVERS_PS2_HPP_INCLUDED)

targets/_any/include/os/tools/ringbuffer.hpp

@@ -0,0 +1,44 @@
+
+#pragma once
+
+#if !defined(BAD_APPLE_OS_OS_TOOLS_RINGBUFFER_HPP_INCLUDED)
+#define BAD_APPLE_OS_OS_TOOLS_RINGBUFFER_HPP_INCLUDED
+
+#include <array>
+#include <cstddef>
+
+namespace baos
+{
+template<typename T, std::size_t SIZE>
+class RingBuffer
+{
+private:
+    std::array<T, SIZE> mElements;
+    std::size_t mBufferedElements = 0;
+    std::size_t mPosition = 0;
+public:
+    [[nodiscard]] bool full() const noexcept { return mBufferedElements == SIZE; }
+    [[nodiscard]] bool empty() const noexcept { return mBufferedElements == 0; }
+    bool append(T element) noexcept
+    {
+        if (full()) {
+            return false;
+        }
+        mElements[mPosition] = std::move(element);
+        ++mBufferedElements;
+        mPosition = (mPosition + 1) % SIZE;
+        return true;
+    }
+    bool next(T& outElement) noexcept
+    {
+        if (empty()) {
+            return false;
+        }
+        outElement = std::move(mElements[(mPosition + SIZE - mBufferedElements) % SIZE]);
+        --mBufferedElements;
+        return true;
+    }
+};
+}
+
+#endif // !defined(BAD_APPLE_OS_OS_TOOLS_RINGBUFFER_HPP_INCLUDED)

targets/_any/include/stdio.h

@@ -8,8 +8,16 @@
 #include <stddef.h>
 #include "./detail/common.h"
 
+#define stdin __stdin
+
 BA_EXTERN_C_BEGIN
 
+typedef struct __file FILE;
+
+extern FILE* __stdin;
+
+static int EOF = -1;
+
 int putchar(int chr) BA_CXX_NOEXCEPT;
 int puts(const char* str) BA_CXX_NOEXCEPT;
 int printf(const char* format, ...) BA_CXX_NOEXCEPT __attribute__((format(printf, 1, 2)));
@@ -17,6 +25,11 @@ int vprintf(const char* format, va_list vlist) BA_CXX_NOEXCEPT;
 int snprintf(char* buffer, size_t bufferSize, const char* format, ...) BA_CXX_NOEXCEPT __attribute__((format(printf, 3, 4)));
 int vsnprintf(char* buffer, size_t bufferSize, const char* format, va_list vlist) BA_CXX_NOEXCEPT;
 
+int fgetc(FILE* stream) BA_CXX_NOEXCEPT;
+char* fgets(char* buffer, int count, FILE* stream) BA_CXX_NOEXCEPT;
+inline int getc(FILE* stream) BA_CXX_NOEXCEPT { return fgetc(stream); }
+inline int getchar() BA_CXX_NOEXCEPT { return fgetc(stdin); }
+
 BA_EXTERN_C_END
 
 #endif // !defined(BAD_APPLE_OS_STDIO_H_INCLUDED)