From 8ebf584bbb43584b671b79d5166e00268a7c9661 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Wed, 25 Sep 2019 22:57:33 +0200
Subject: Fixed several TTY bugs and improved VESA detection

---
 src/kernel/lib/lib.h    |  4 ++++
 src/kernel/lib/string.c | 29 +++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

(limited to 'src/kernel/lib')

diff --git a/src/kernel/lib/lib.h b/src/kernel/lib/lib.h
index f0d7d1b..f83c7d5 100644
--- a/src/kernel/lib/lib.h
+++ b/src/kernel/lib/lib.h
@@ -9,10 +9,14 @@ size_t strcmp(const char *s1, const char *s2);
 
 char *strcat(char *dst, const char *src);
 
+char *strcpy(char *dst, const char *src);
+
 void *memory_copy(void *dest, const void *src, size_t count);
 
 void *memory_set(void *dest, char val, size_t count);
 
 int memory_compare(const void *a_ptr, const void *b_ptr, size_t size);
 
+char *itoa(int i, char b[]);
+
 #endif
diff --git a/src/kernel/lib/string.c b/src/kernel/lib/string.c
index 6ef0316..2b8cdfb 100644
--- a/src/kernel/lib/string.c
+++ b/src/kernel/lib/string.c
@@ -25,3 +25,32 @@ char *strcat(char *dst, const char *src) {
     dst[i + j] = 0;
     return dst;
 }
+
+char *strcpy(char *dst, const char *src) {
+    unsigned int i = 0;
+    for (i = 0; src[i] != 0; i++) {
+        dst[i] = src[i];
+    }
+    dst[i] = 0;
+    return dst;
+}
+
+char *itoa(int i, char b[]) {
+    char const digit[] = "0123456789";
+    char *p = b;
+    if (i < 0) {
+        *p++ = '-';
+        i *= -1;
+    }
+    int shifter = i;
+    do {
+        ++p;
+        shifter = shifter / 10;
+    } while (shifter);
+    *p = '\0';
+    do {
+        *--p = digit[i % 10];
+        i = i / 10;
+    } while (i);
+    return b;
+}
\ No newline at end of file
-- 
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