From 8dcb1de91e15ff7fc66279cd9cd9ad8a70f624e0 Mon Sep 17 00:00:00 2001
From: Dominick Allen <djallen@librehumanitas.org>
Date: Tue, 29 Oct 2024 23:16:46 -0500
Subject: u8 string literals

---
 include/fud_c_string.hpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'include/fud_c_string.hpp')

diff --git a/include/fud_c_string.hpp b/include/fud_c_string.hpp
index 44e0dc8..d55ba30 100644
--- a/include/fud_c_string.hpp
+++ b/include/fud_c_string.hpp
@@ -50,6 +50,31 @@ constexpr ssize_t cStringLength(const char* str)
     return cStringLength(str, maxLength);
 }
 
+constexpr ssize_t cStringLength(const char8_t* str, size_t maxLength)
+{
+    if (str == nullptr || maxLength > (SSIZE_MAX - 1)) {
+        return -1;
+    }
+
+    ssize_t size = 0;
+
+    while (str[size] != 0 && static_cast<size_t>(size) < maxLength) {
+        size++;
+    }
+
+    if (str[size] != 0 && static_cast<size_t>(size) == maxLength) {
+        return static_cast<ssize_t>(maxLength) + 1;
+    }
+
+    return size;
+}
+
+constexpr ssize_t cStringLength(const char8_t* str)
+{
+    constexpr auto maxLength = SSIZE_MAX - 1;
+    return cStringLength(str, maxLength);
+}
+
 } // namespace fud
 
 #endif
-- 
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