Ticket #257: 00-70-utf8-common.patch

src/util.c

@@ -113 +113 @@
         return strlen (str);
 }
 
+int
+columns_to_bytes (const char *str, int col)
+{
+    int bytes = 0;
+    int columns = 0;
+    int i;
+#ifdef UTF8
+    if (SLsmg_Is_Unicode) {
+        static mbstate_t s;
+        while (columns < col) {
+            memset (&s, 0, sizeof (s));
+            i = mbrlen (str + bytes, -1, &s);
+            if (i <= 0) {
+                return col + bytes - columns;
+            }
+            bytes += i;
+            columns ++;
+        }
+        return col + bytes - columns;
+    } else
+#endif
+        return col;
+}
+
 #ifdef UTF8
 
 void 

src/util.h

@@ -95 +95 @@
 
 void fix_utf8(char *str);
 size_t mbstrlen (const char *);
+int columns_to_bytes (const char *, int);
 wchar_t *mbstr_to_wchar (const char *);
 char *wchar_to_mbstr (const wchar_t *);
 char *utf8_to_local(char *str);