refactor: promote new architecture to repository root

Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/string/strtok_r.c b/lib/string/strtok_r.c
new file mode 100644
index 0000000..a702703
--- /dev/null
+++ b/lib/string/strtok_r.c
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT */
+/* Derived from musl libc (Copyright © 2005-2020 Rich Felker, et al.) */
+
+#include <string.h>
+
+char *strtok_r(char *restrict s, const char *restrict sep, char **restrict p)
+{
+	if (!s && !(s = *p)) return NULL;
+	s += strspn(s, sep);
+	if (!*s) return *p = 0;
+	*p = s + strcspn(s, sep);
+	if (**p) *(*p)++ = 0;
+	else *p = 0;
+	return s;
+}