From 3441b319001d5c9c4db365bc08dd779eaa0e9bea Mon Sep 17 00:00:00 2001
From: Tom-on64 <kubecekt@gmail.com>
Date: Thu, 11 Apr 2024 13:12:13 +0200
Subject: [PATCH] Added atoi() function to string.h header

---
 src/kernel/string.c | 12 ++++++++++++
 src/kernel/string.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/src/kernel/string.c b/src/kernel/string.c
index 122aefd..55ac15f 100644
--- a/src/kernel/string.c
+++ b/src/kernel/string.c
@@ -18,6 +18,18 @@ char* itoa(uint32_t val, uint8_t base) {
     return &buf[i + 1];
 }
 
+uint32_t atoi(const char* str) {
+    uint32_t res = 0;
+
+    // TODO: Add error checking
+
+    while (*str >= '0' && *str <= '9') {
+        res = res * 10 + (*str++ - '0');
+    }
+
+    return res;
+}
+
 // Some implementations taken from https://en.wikibooks.org/wiki/C_Programming/String_manipulation
 char* strcat(char* str1, const char* str2) {
     char* s = str1;
diff --git a/src/kernel/string.h b/src/kernel/string.h
index 4a7e761..f6f700a 100644
--- a/src/kernel/string.h
+++ b/src/kernel/string.h
@@ -4,6 +4,7 @@
 #include "stdint.h"
 
 char* itoa(uint32_t val, uint8_t base);
+uint32_t atoi(const char* str);
 
 char* strcat(char* str1, const char* str2);
 char* strchr(const char* str, char c);