From 6ef844bd6bcce5fe0cf193797c7d9529d3eb4cfc Mon Sep 17 00:00:00 2001
From: yuqing <qing.yu@yundongpai.net>
Date: Mon, 17 Sep 2018 12:01:03 +0800
Subject: [PATCH] add FC_IS_CHINESE_UTF8_CHAR

---
 src/common_define.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/common_define.h b/src/common_define.h
index 927a731..e825bdd 100644
--- a/src/common_define.h
+++ b/src/common_define.h
@@ -217,6 +217,12 @@ typedef void* (*MallocFunc)(size_t size);
   #define __gcc_attribute__(x)
 #endif
 
+#define FC_IS_CHINESE_UTF8_CHAR(p, end) \
+    ((p + 2 < end) &&  \
+     ((((unsigned char)*p) & 0xF0) == 0xE0) &&       \
+     ((((unsigned char)*(p + 1)) & 0xC0) == 0x80) && \
+     ((((unsigned char)*(p + 2)) & 0xC0) == 0x80))
+
 //for printf format %.*s
 #define FC_PRINTF_STAR_STRING_PARAMS(s)  (s).len, (s).str