# HG changeset patch
# User rubidium <rubidium@openttd.org>
# Date 2010-12-05 22:17:25
# Node ID 6d591011eeb3b2d22cb56d01ff9095d863a91ce8
# Parent  9972c29ce194e7914d9e80a84a78db146c88d49c

(svn r21404) -Add: method for getting the length of an Utf8 string in characters

diff --git a/src/string.cpp b/src/string.cpp
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -216,6 +216,21 @@ void str_strip_colours(char *str)
 }
 
 /**
+ * Get the length of an UTF-8 encoded string in number of characters
+ * and thus not the number of bytes that the encoded string contains.
+ * @param s The string to get the length for.
+ * @return The length of the string in characters.
+ */
+size_t Utf8StringLength(const char *s)
+{
+	size_t len = 0;
+	const char *t = s;
+	while (Utf8Consume(&t) != 0) len++;
+	return len;
+}
+
+
+/**
  * Convert a given ASCII string to lowercase.
  * NOTE: only support ASCII characters, no UTF8 fancy. As currently
  * the function is only used to lowercase data-filenames if they are
diff --git a/src/string_func.h b/src/string_func.h
--- a/src/string_func.h
+++ b/src/string_func.h
@@ -233,6 +233,8 @@ static inline char *Utf8PrevChar(char *s
 	return ret;
 }
 
+size_t Utf8StringLength(const char *s);
+
 /**
  * Is the given character a text direction character.
  * @param c The character to test.