2 files changed, 25 insertions, 1 deletions
diff --git a/include/al/lib.h b/include/al/lib.h
index 81f6978..63a2f48 100644
--- a/include/al/lib.h
+++ b/include/al/lib.h
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <assert.h>
+#include <ctype.h>
 
 void al_malloc_init(void);
 void al_malloc_close(void);
@@ -44,10 +45,11 @@ void al_set_alloc(void *(*malloc_func)(size_t), void *(*calloc_func)(size_t, siz
 #define al_memset memset
 #define al_bzero bzero
 #define al_strlen strlen
+#define al_sprintf sprintf
 #ifdef _DEBUG_
 #define al_assert assert
 #else
-#define al_assert(expr) do { (void)sizeof(expr); } while (0)
+#define al_assert(expr) do { (void)sizeof(expr); } while (0) // NOLINT(bugprone-sizeof-expression)
 #endif
 
 #define al_alloc_object(type) (type *)al_calloc(1, sizeof(type))
@@ -148,6 +150,16 @@ static inline u32 al_u32_inc_wrap(u32 v)
     return (v == UINT32_MAX) ? 0 : v + 1;
 }
 
+static inline u32 al_u32_add_wrap(u32 v, u32 add)
+{
+    return (((u64)v + add) > UINT32_MAX) ? (add - (UINT32_MAX - v)) : v + add;
+}
+
+static inline u16 al_u16_add_wrap(u16 v, u16 add)
+{
+    return (((u32)v + add) > UINT16_MAX) ? (add - (UINT16_MAX - v)) : v + add;
+}
+
 AL_UNUSED_FUNCTION_PUSH
 
 extern size_t al_page_size;
diff --git a/include/al/str.h b/include/al/str.h
index 9ede09a..ed53c25 100644
--- a/include/al/str.h
+++ b/include/al/str.h
@@ -30,6 +30,11 @@ typedef struct {
 
 AL_UNUSED_FUNCTION_PUSH
 
+static inline bool al_str_is_empty(str *s)
+{
+    return s->len == 0;
+}
+
 static inline void al_str_free(str *s)
 {
     if (s->alloc > 0) al_free(s->data);
@@ -75,6 +80,13 @@ static inline void al_str_from(str *s, const char *c_str)
     s->len = (u32)len;
 }
 
+static inline void al_str_to_lower(str *s)
+{
+    for (u32 i = 0; i < s->len; i++) {
+        al_str_at(s, i) = tolower(al_str_at(s, i));
+    }
+}
+
 // Returned c_str must be free'd by the user.
 static inline char *al_str_to_c_str(str *s)
 {