From f157304896b09661aee090207624d1d07a3d0b1b Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Sat, 14 Aug 2004 15:14:36 +0000
Subject: [PATCH] UTF8_SPACE turned to an inline function. Added
 utf8_encoding_length() which measures expected length of an UTF-8 sequence
 according to its first byte.

---
 lib/unicode.h | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/lib/unicode.h b/lib/unicode.h
index ca8bdea3..199b3d70 100644
--- a/lib/unicode.h
+++ b/lib/unicode.h
@@ -71,7 +71,26 @@
 
 #define UTF8_SKIP_BWD(p) while ((--*(p) & 0xc0) == 0x80)
 
-#define UTF8_SPACE(u) ((u) < 0x80 ? 1 : (u) < 0x800 ? 2 : 3)
+static inline uns
+utf8_space(uns u)
+{
+  if (u < 0x80)
+    return 1;
+  if (u < 0x800)
+    return 2;
+  return 3;
+}
+
+static inline uns
+utf8_encoding_len(uns c)
+{
+  if (c < 0x80)
+    return 1;
+  ASSERT(c >= 0xc0 && c < 0xf0);
+  if (c < 0xe0)
+    return 2;
+  return 3;
+}
 
 /* unicode-utf8.c */
 
-- 
2.39.2