Genesis

1 files changed, 22 insertions, 0 deletions

diff --git a/lib/mbstring/u8spn.c b/lib/mbstring/u8spn.c
new file mode 100644
index 0000000..1cf45f2
--- /dev/null
+++ b/lib/mbstring/u8spn.c
@@ -0,0 +1,22 @@
+#include "mbstring.h"
+
+size_t
+u8spn(const char8_t *s, size_t n, const rune *p, size_t m)
+{
+	rune ch;
+	size_t k = 0, l;
+
+	while ((l = u8next(&ch, &s, &n))) {
+		for (size_t i = 0; i < m; i++) {
+			if (p[i] == ch) {
+				k += l;
+				goto found;
+			}
+		}
+
+		break;
+found:;
+	}
+
+	return k;
+}