Genesis

1 files changed, 53 insertions, 0 deletions

diff --git a/include/mbstring.h b/include/mbstring.h
new file mode 100644
index 0000000..ddeb514
--- /dev/null
+++ b/include/mbstring.h
@@ -0,0 +1,53 @@
+#ifndef MLIB_MBSTRING_H
+#define MLIB_MBSTRING_H
+
+#include <stddef.h>
+
+#include "__charN_t.h"
+#include "__qmacros.h"
+#include "__rune.h"
+
+#if !__MLIB_HAS_U8VIEW
+#	define __MLIB_HAS_U8VIEW 1
+
+struct u8view {
+	const char8_t *p;
+	size_t len;
+};
+#endif
+
+#define U8_BYTE_1(x) (((x) & 0x80) == 0x00)
+#define U8_BYTE_2(x) (((x) & 0xE0) == 0xC0)
+#define U8_BYTE_3(x) (((x) & 0xF0) == 0xE0)
+#define U8_BYTE_4(x) (((x) & 0xF8) == 0xF0)
+#define U8_BYTE_C(x) (((x) & 0xC0) == 0x80)
+
+static const rune U8_1B_MAX = 0x00007FL;
+static const rune U8_2B_MAX = 0x0007FFL;
+static const rune U8_3B_MAX = 0x00FFFFL;
+static const rune U8_4B_MAX = 0x10FFFFL;
+
+#define PRIsU8          ".*s"
+#define U8_PRI_ARGS(sv) ((int)(sv).len), ((sv).p)
+
+char8_t *u8chk(const char8_t *, size_t);
+char8_t *u8chr(const char8_t *, rune, size_t);
+char8_t *u8rchr(const char8_t *, rune, size_t);
+int rtou8(char8_t *, rune, size_t);
+int u8cmp(struct u8view, struct u8view);
+int u8next(rune *, const char8_t **, size_t *);
+int u8prev(rune *, const char8_t **, const char8_t *);
+int u8tor(rune *, const char8_t *);
+size_t u8cspn(const char8_t *, size_t, const rune *, size_t);
+size_t u8len(const char8_t *, size_t);
+size_t u8spn(const char8_t *, size_t, const rune *, size_t);
+
+#if !_RUNE_NO_MACRO_WRAPPER
+#	define u8chk(s, n)      _RUNE_Q_PTR(char8_t, u8chk, (s), (s), (n))
+#	define u8chr(s, ch, n)  _RUNE_Q_PTR(char8_t, u8chr, (s), (s), (ch), (n))
+#	define u8rchr(s, ch, n) _RUNE_Q_PTR(char8_t, u8rchr, (s), (s), (ch), (n))
+#endif
+
+static const int U8_LEN_MAX = 4;
+
+#endif /* !MLIB_MBSTRING_H */