From 823cd652b91acfa769d551497f1979f162e865fb Mon Sep 17 00:00:00 2001
From: Abdelrahman <said.abdelrahman89@gmail.com>
Date: Sun, 7 Sep 2025 17:21:52 +0100
Subject: [PATCH] Add to_lower and to_upper functions

---
 src/primitives/strings/str8/str8.c | 21 +++++++++++++++++++++
 src/primitives/strings/str8/str8.h |  2 ++
 2 files changed, 23 insertions(+)

diff --git a/src/primitives/strings/str8/str8.c b/src/primitives/strings/str8/str8.c
index 76c1ddb..f8038aa 100644
--- a/src/primitives/strings/str8/str8.c
+++ b/src/primitives/strings/str8/str8.c
@@ -4,6 +4,7 @@
 #include "../../../common/aliases/aliases.h"
 #include "../../../common/assert/assert.h"
 #include "../../mem_allocator/mem_allocator.h"
+#include <ctype.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -240,6 +241,26 @@ void wapp_str8_format(Str8 *dst, const char *format, ...) {
   va_end(args2);
 }
 
+void wapp_str8_to_lower(Str8 *dst, Str8RO *src) {
+  wapp_debug_assert(src != NULL && dst != NULL, "`dst` and `src` should not be NULL");
+  wapp_debug_assert(dst->capacity >= src->capacity, "`dst` does not have enough capacity");
+
+  dst->size = src->size;
+  for (u64 i = 0; i < src->size; ++i) {
+    wapp_str8_set(dst, i, tolower(wapp_str8_get(src, i)));
+  }
+}
+
+void wapp_str8_to_upper(Str8 *dst, Str8RO *src) {
+  wapp_debug_assert(src != NULL && dst != NULL, "`dst` and `src` should not be NULL");
+  wapp_debug_assert(dst->capacity >= src->capacity, "`dst` does not have enough capacity");
+
+  dst->size = src->size;
+  for (u64 i = 0; i < src->size; ++i) {
+    wapp_str8_set(dst, i, toupper(wapp_str8_get(src, i)));
+  }
+}
+
 i64 wapp_str8_find(Str8RO *str, Str8RO substr) {
   if (!str || substr.size > str->size) {
     return -1;
diff --git a/src/primitives/strings/str8/str8.h b/src/primitives/strings/str8/str8.h
index b74ffc8..74321d3 100644
--- a/src/primitives/strings/str8/str8.h
+++ b/src/primitives/strings/str8/str8.h
@@ -97,6 +97,8 @@ void wapp_str8_copy_cstr_capped(Str8 *dst, const char *src);
 void wapp_str8_copy_str8_capped(Str8 *dst, Str8RO *src);
 void wapp_str8_copy_to_cstr(char *dst, Str8RO *src, u64 dst_capacity);
 void wapp_str8_format(Str8 *dst, const char *format, ...);
+void wapp_str8_to_lower(Str8 *dst, Str8RO *src);
+void wapp_str8_to_upper(Str8 *dst, Str8RO *src);
 
 /**
  * Str8 find functions