From b70bf938c230bb5e8aafe95094975a8e10109876 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Fri, 10 Oct 2014 21:17:40 +0200
Subject: util/UTF8: add SequenceLengthUTF8()

---
 src/util/UTF8.hxx | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/util/UTF8.hxx')

diff --git a/src/util/UTF8.hxx b/src/util/UTF8.hxx
index d3d694f6b..82d324f3e 100644
--- a/src/util/UTF8.hxx
+++ b/src/util/UTF8.hxx
@@ -42,6 +42,22 @@ gcc_pure gcc_nonnull_all
 bool
 ValidateUTF8(const char *p);
 
+/**
+ * @return the number of the sequence beginning with the given
+ * character, or 0 if the character is not a valid start byte
+ */
+gcc_const
+size_t
+SequenceLengthUTF8(char ch);
+
+/**
+ * @return the number of the first sequence in the given string, or 0
+ * if the sequence is malformed
+ */
+gcc_pure
+size_t
+SequenceLengthUTF8(const char *p);
+
 /**
  * Convert the specified string from ISO-8859-1 to UTF-8.
  *
-- 
cgit v1.2.3