luna/include/luna/CString.h

@@ -22,6 +22,8 @@ extern "C"
     // FIXME: Replace this invented function with strlcpy().
     void nullcpy(char* dest, const char* src, usize len);
 
+    usize strlcpy(char* dest, const char* src, usize len);
+
     [[deprecated]] char* strcpy(char* dst, const char* src);
     [[deprecated]] char* strcat(char* dst, const char* src);
 

luna/src/CString.cpp

@@ -125,4 +125,15 @@ extern "C"
         if (*str) return const_cast<char*>(str);
         return NULL;
     }
+
+    usize strlcpy(char* dest, const char* src, usize len)
+    {
+        usize src_len = strlen(src);
+        usize copy_len = src_len;
+        if (len == 0) return src_len;
+        if (src_len >= (len - 1)) copy_len = len - 1;
+        memcpy(dest, src, copy_len);
+        dest[copy_len] = 0;
+        return src_len;
+    }
 }