formatting and make events const

.clang-format

@@ -1,5 +1,5 @@
 IndentWidth: 4
-ColumnLimit: 120
+ColumnLimit: 100
 
 # Pointer formatting
 DerivePointerAlignment: false
@@ -16,5 +16,4 @@ AllowShortLoopsOnASingleLine: false
 SeparateDefinitionBlocks: Always
 
 BreakBeforeBraces: Allman
-
+Cpp11BracedListStyle: true
-Cpp11BracedListStyle: false

src/idt.c

@@ -31,7 +31,8 @@ typedef struct
 extern void* isr_stub_table[];
 static irq_handler_t irq_handlers[16] = {0};
 
-static const char* exception_messages[32] = { "divide by zero",
+static const char* exception_messages[32] = {
+    "divide by zero",
     "debug",
     "non maskable interrupt",
     "breakpoint",
@@ -62,7 +63,8 @@ static const char* exception_messages[32] = { "divide by zero",
     "hypervisor injection exception",
     "vmm communication exception",
     "security exception",
-                                              "reserved" };
+    "reserved",
+};
 
 static interrupt_descriptor idt[IDT_SIZE];
 
@@ -126,7 +128,10 @@ void init_idt(void)
         idt_set_descriptor(i, isr_stub_table[i], 0);
     }
 
-    idtr_t idtr = { .base = (uintptr_t)&idt[0], .limit = (uint16_t)sizeof(interrupt_descriptor) * IDT_SIZE - 1 };
+    idtr_t idtr = {
+        .base = (uintptr_t)&idt[0],
+        .limit = (uint16_t)sizeof(interrupt_descriptor) * IDT_SIZE - 1,
+    };
 
     __asm__ volatile("lidt %0" : : "m"(idtr));
     __asm__ volatile("sti");

src/idt.h

@@ -11,7 +11,7 @@ typedef struct
     uint64_t rip, cs, rflags, rsp, ss;
 } __attribute__((packed)) isr_frame_t;
 
-typedef void (*irq_handler_t)(isr_frame_t*);
+typedef void (*irq_handler_t)(const isr_frame_t*);
 
 void init_idt(void);
 

src/kernel.c

@@ -4,7 +4,7 @@
 #include "vga.h"
 #include <stdbool.h>
 
-void keyboard_handler(keyboard_event_t* event)
+void keyboard_handler(const keyboard_event_t* event)
 {
     if (event->pressed)
     {

src/keyboard.c

@@ -18,7 +18,7 @@ bool caps_lock = false;
 static keyboard_handler_t keyboard_handlers[KEYBOARD_HANDLERS_LENGTH];
 static int handler_index = 0;
 
-void handle_keyboard(isr_frame_t* frame)
+void handle_keyboard(const isr_frame_t* frame)
 {
     uint8_t code = inb(0x60);
     uint8_t scan_code = code & 0x7F;
@@ -42,7 +42,12 @@ void handle_keyboard(isr_frame_t* frame)
     }
     default:
     {
-        keyboard_event_t event = { .scan_code = scan_code, .pressed = pressed, .caps_lock = caps_lock, .shift = shift };
+        keyboard_event_t event = {
+            .scan_code = scan_code,
+            .pressed = pressed,
+            .caps_lock = caps_lock,
+            .shift = shift,
+        };
 
         for (int i = 0; i < handler_index; i++)
         {
@@ -52,9 +57,10 @@ void handle_keyboard(isr_frame_t* frame)
     }
 }
 
-void register_keypress_handler(keyboard_handler_t handler)
+void register_keypress_handler(const keyboard_handler_t handler)
 {
-    // todo(nub31): remove when a memory allocator is implemented and keyboard_handlers is a dynamic list
+    // todo(nub31): remove when a memory allocator is implemented and
+    // keyboard_handlers is a dynamic list
     if (handler_index >= KEYBOARD_HANDLERS_LENGTH)
     {
         vga_print_error();

src/keyboard.h

@@ -9,9 +9,10 @@ typedef struct
     bool pressed;
     bool shift;
     bool caps_lock;
+    char ascii;
 } keyboard_event_t;
 
-typedef void (*keyboard_handler_t)(keyboard_event_t*);
+typedef void (*keyboard_handler_t)(const keyboard_event_t*);
 
 void init_keyboard();
 void register_keypress_handler(keyboard_handler_t handler);

src/vga.c

@@ -33,7 +33,10 @@ void vga_clear(void)
     {
         for (uint8_t col = 0; col < COLUMNS; col++)
         {
-            vga_char character = { .character = ' ', .color = vga_default_color() };
+            vga_char character = {
+                .character = ' ',
+                .color = vga_default_color(),
+            };
             vga_set_char(row, col, character);
         }
     }
@@ -68,7 +71,10 @@ void vga_print_char_colored(char character, vga_color_t color)
     }
     default:
     {
-        vga_char c = { .character = character, .color = color };
+        vga_char c = {
+            .character = character,
+            .color = color,
+        };
         vga_set_char(cursor_row, cursor_col, c);
         cursor_col += 1;
         break;
@@ -93,7 +99,10 @@ void vga_print_char_colored(char character, vga_color_t color)
 
         for (uint8_t col = 0; col < COLUMNS; col++)
         {
-            vga_char c = { .character = ' ', .color = vga_default_color() };
+            vga_char c = {
+                .character = ' ',
+                .color = vga_default_color(),
+            };
             vga_set_char(ROWS - 1, col, c);
         };