New repo setup

src/util/string.cpp

@@ -0,0 +1,49 @@
+#include "string.h"
+
+extern "C" void *memcpy(void *dest, const void *src, size_t count)
+{
+    char *d = (char *)dest;
+    const char *s = (const char *)src;
+    for (int i = 0; i < count; i++)
+    {
+        d[i] = s[i];
+    }
+    return dest;
+}
+
+void memset(char *s, int size, int v)
+{
+    for (int i = 0; i < size; i++)
+    {
+        s[i] = (char)v;
+    }
+}
+
+int strlen(const char *s)
+{
+    int c = 0;
+    if (s == nullptr)
+    {
+        return 0;
+    }
+    while (s[c] != '\0')
+    {
+        c++;
+    }
+    return c;
+}
+
+void strcpy(char *dest, const char *src)
+{
+    if (dest == nullptr || src == nullptr)
+    {
+        return;
+    }
+    while (*src != '\0')
+    {
+        *dest = *src;
+        dest++;
+        src++;
+    }
+    *dest = '\0';
+}