1 files changed, 47 insertions, 0 deletions
diff --git a/vendor/librune/include/utf8.h b/vendor/librune/include/utf8.h
new file mode 100644
index 0000000..0ebd745
--- /dev/null
+++ b/vendor/librune/include/utf8.h
@@ -0,0 +1,47 @@
+#ifndef RUNE_UTF8_H
+#define RUNE_UTF8_H
+
+#if __STDC_VERSION__ < 202311L
+#	include <stdbool.h> /* IWYU pragma: export */
+#	define _RUNE_UNSEQUENCED
+#else
+#	define _RUNE_UNSEQUENCED [[unsequenced]]
+#endif
+
+#define _RUNE_NEEDS_U8VIEW 1
+#include "internal/types.h" /* IWYU pragma: export */
+
+#define U8_LEN_MAX (4)
+
+int rtou8(char8_t *, rune, size_t);
+int u8tor(rune *, const char8_t *);
+int u8tor_uc(rune *, const char8_t *);
+
+const char8_t *u8chk(const char8_t *, size_t);
+bool u8chkr(rune);
+
+_RUNE_UNSEQUENCED int u8wdth(rune);
+
+size_t u8len(const char8_t *, size_t);
+
+const char8_t *u8next(rune *, const char8_t **, size_t *);
+const char8_t *u8prev(rune *, const char8_t **, const char8_t *);
+
+const char8_t *u8chr(const char8_t *, rune, size_t);
+const char8_t *u8rchr(const char8_t *, rune, size_t);
+
+size_t u8set(const char8_t *, rune, size_t);
+
+/* clang-format off */
+size_t   u8spn(const char8_t *, size_t, const rune *, size_t);
+size_t  u8bspn(const char8_t *, size_t, const rune *, size_t);
+size_t  u8cspn(const char8_t *, size_t, const rune *, size_t);
+size_t u8cbspn(const char8_t *, size_t, const rune *, size_t);
+
+#define   U8SPN(S, N, P)   u8spn((S), (N), (P), (sizeof(P) / sizeof(*(P))))
+#define  U8BSPN(S, N, P)  u8bspn((S), (N), (P), (sizeof(P) / sizeof(*(P))))
+#define  U8CSPN(S, N, P)  u8cspn((S), (N), (P), (sizeof(P) / sizeof(*(P))))
+#define U8CBSPN(S, N, P) u8cbspn((S), (N), (P), (sizeof(P) / sizeof(*(P))))
+/* clang-format on */
+
+#endif /* !RUNE_UTF8_H */