UTF8

- Added UTF8 string width calculation.

src/utf8.cpp

@@ -28,6 +28,7 @@
 #define L10N                                           // Localization complete.
 
 #include <string>
+#include <text.h>
 #include <utf8.h>
 #include <i18n.h>
 
@@ -192,6 +193,19 @@ unsigned int utf8_length (const std::string& str)
   return charLength;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// Width of a string in character cells.
+unsigned int utf8_width (const std::string& str)
+{
+  unsigned int length = 0;
+  std::string::size_type i = 0;
+  unsigned int c;
+  while ((c = utf8_next_char (str, i)))
+    length += mk_wcwidth (c);
+
+  return length;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 unsigned int utf8_text_length (const std::string& str)
 {