refactor(io): change functions names

include/io.h

@@ -8,7 +8,6 @@
 #define va_end __builtin_va_end
 #define va_arg __builtin_va_arg
 
-void r_printf(const char *fmt, ...);
+void kprintf(const char *fmt, ...);
-size_t r_strlen(const char *str);
 
 #endif

src/io.c

@@ -1,14 +1,15 @@
 #include "../include/io.h"
+#include "../include/string.h"
 
-void k_putchar(char ch);
+void kputchar(char ch);
 
-void r_printf(const char *fmt, ...) {
+void kprintf(const char *fmt, ...) {
 	va_list args;
 	va_start(args, fmt);
 
 	while (*fmt) {
 		if (*fmt != '%') {
-			k_putchar(*fmt);
+			kputchar(*fmt);
 			fmt++;
 			continue;
 		}
@@ -18,13 +19,13 @@ void r_printf(const char *fmt, ...) {
 		switch (*fmt) {
 			case '\0': {
 				/* Simply print the char */
-				k_putchar('%');
+				kputchar('%');
 
 				goto end;
 			}
 			case '%': {
 				/* Print '%' */
-				k_putchar('%');
+				kputchar('%');
 
 				break;
 			}
@@ -32,7 +33,7 @@ void r_printf(const char *fmt, ...) {
 				/* Print a NULL-terminated string */
 				const char *s = va_arg(args, const char *);
 				while (*s) {
-					k_putchar(*s);
+					kputchar(*s);
 					s++;
 				}
 
@@ -43,7 +44,7 @@ void r_printf(const char *fmt, ...) {
 				int value = va_arg(args, int);
 				unsigned magnitude = value;
 				if (value < 0) {
-					k_putchar('-');
+					kputchar('-');
 					magnitude = -magnitude;
 				}
 
@@ -53,12 +54,9 @@ void r_printf(const char *fmt, ...) {
 				}
 
 				while (divisor > 0) {
-					k_putchar('0' + magnitude);
+					kputchar('0' + magnitude / divisor);
-					k_putchar('0' + magnitude / divisor);
 					magnitude %= divisor;
-					k_putchar('0' + magnitude);
 					divisor /= 10;
-					k_putchar('0' + magnitude);
 				}
 
 				break;
@@ -69,14 +67,14 @@ void r_printf(const char *fmt, ...) {
 				for (int i = 7; i >= 0; --i) {
 					unsigned nibble = (value >> (i * 4)) & 0xF;
 					/* From a char array we get the nibble position */
-					k_putchar("0123456789ABCDEF"[nibble]);
+					kputchar("0123456789ABCDEF"[nibble]);
 				}
 			}
 			default: {
 				const char *str = "NOT IMPLEMENTED";
-				size_t len = r_strlen(str);
+				size_t len = kstrlen(str);
 				for (size_t i = 0; i < len; ++i) {
-					k_putchar(str[i]);
+					kputchar(str[i]);
 				}
 			}
 		}
@@ -87,14 +85,3 @@ void r_printf(const char *fmt, ...) {
 end:
 	va_end(args);
 }
-
-size_t r_strlen(const char *str) {
-	size_t len = 0;
-
-	while (*str) {
-		len++;
-		str++;
-	}
-
-	return len;
-}