From 6cc52f59653c1332049df11bbde57f840e0464b5 Mon Sep 17 00:00:00 2001
From: nsz <nsz@port70.net>
Date: Fri, 5 Aug 2011 02:45:05 +0200
Subject: [PATCH] utf8 bench from libc-bench

---
 src/multibyte/utf8bench.c | 65 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 src/multibyte/utf8bench.c

diff --git a/src/multibyte/utf8bench.c b/src/multibyte/utf8bench.c
new file mode 100644
index 0000000..5233549
--- /dev/null
+++ b/src/multibyte/utf8bench.c
@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include <locale.h>
+#include <langinfo.h>
+
+#define LEN 500000
+
+static char *initbuf() {
+	char *buf;
+	int i, j, k, l;
+
+	setlocale(LC_CTYPE, "C.UTF-8")
+	|| setlocale(LC_CTYPE, "en_US.UTF-8")
+	|| setlocale(LC_CTYPE, "en_GB.UTF-8")
+	|| setlocale(LC_CTYPE, "en.UTF-8")
+	|| setlocale(LC_CTYPE, "de_DE-8")
+	|| setlocale(LC_CTYPE, "fr_FR-8");
+	if (strcmp(nl_langinfo(CODESET), "UTF-8")) exit(1);
+
+	buf = malloc(LEN);
+	l = 0;
+	for (i=0xc3; i<0xe0; i++)
+		for (j=0x80; j<0xc0; j++)
+			buf[l++] = i, buf[l++] = j;
+	for (i=0xe1; i<0xed; i++)
+		for (j=0x80; j<0xc0; j++)
+			for (k=0x80; k<0xc0; k++)
+				buf[l++] = i, buf[l++] = j, buf[l++] = k;
+	for (i=0xf1; i<0xf4; i++)
+		for (j=0x80; j<0xc0; j++)
+			for (k=0x80; k<0xc0; k++)
+				buf[l++] = i, buf[l++] = j, buf[l++] = 0x80, buf[l++] = k;
+	buf[l++] = 0;
+	return buf;
+}
+
+void bench_utf8_bigbuf(int N) {
+	char *buf;
+	wchar_t *wbuf;
+	int i;
+	int cs;
+
+	buf = initbuf();
+	wbuf = malloc(LEN*sizeof(wchar_t));
+	for (i=0; i<N; i++)
+		cs ^= mbstowcs(wbuf, buf, LEN);
+	buf[0] = cs;
+	free(wbuf);
+	free(buf);
+}
+
+void bench_utf8_onebyone(int N) {
+	char *buf;
+	wchar_t wc;
+	int i, j;
+	mbstate_t st = {0};
+
+	buf = initbuf();
+	for (i=0; i<N; i++) {
+		for (j=0; buf[j]; j+=mbrtowc(&wc, buf+j, 4, &st));
+	}
+	free(buf);
+}
-- 
2.20.1