From ea8882dd7c024db436e25e86ac3d3fa3b3e43aa0 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sun, 21 Dec 2025 17:14:52 -0500
Subject: usr: sdk: Add initial string lib sources + strlen

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 usr/sdk/common/string/strlen.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 usr/sdk/common/string/strlen.c

(limited to 'usr/sdk/common/string/strlen.c')

diff --git a/usr/sdk/common/string/strlen.c b/usr/sdk/common/string/strlen.c
new file mode 100644
index 0000000..4499512
--- /dev/null
+++ b/usr/sdk/common/string/strlen.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2025, Ian Moffett.
+ * Provided under the BSD-3 clause.
+ */
+
+#include <sdk/string.h>
+#include <sdk/types.h>
+
+USIZE
+strlen(const char *str)
+{
+    USIZE len = 0;
+
+    if (str == NULL) {
+        return 0;
+    }
+
+    while (str[len++] != '\0');
+    return len - 1;
+}
-- 
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