Move wxIsUTF8Prefix() to convauto.cpp

include/wx/strconv.h

@@ -387,8 +387,6 @@ private:
     int m_options;
 };
 
-bool wxIsUTF8Prefix(const char *src, size_t len);
-
 // ----------------------------------------------------------------------------
 // wxMBConvUTF16Base: for both LE and BE variants
 // ----------------------------------------------------------------------------

src/common/convauto.cpp

@@ -23,6 +23,7 @@
 #endif
 
 #include "wx/convauto.h"
+#include "wx/private/unicode.h"
 
 // we use latin1 by default as it seems the least bad choice: the files we need
 // to detect input of don't always come from the user system (they are often
@@ -266,6 +267,26 @@ bool wxConvAuto::InitFromInput(const char *src, size_t len)
     return true;
 }
 
+// checks if the input can be the beginning of a valid UTF-8 string
+static bool wxIsUTF8Prefix(const char *src, size_t len)
+{
+    unsigned char l;
+    for ( size_t i = 0; i < len; ++i )
+    {
+        l = tableUtf8Lengths[(unsigned char)src[i]];
+        if ( !l )
+            return false; // invalid leading byte
+        while ( --l )
+        {
+            if ( ++i == len )
+                return true; // truncated sequence
+            if ( (src[i] & 0xC0) != 0x80 )
+                return false; // invalid continuation byte
+        }
+    }
+    return true;
+}
+
 size_t
 wxConvAuto::ToWChar(wchar_t *dst, size_t dstLen,
                     const char *src, size_t srcLen) const

src/common/strconv.cpp

@@ -1447,26 +1447,6 @@ size_t wxMBConvUTF8::FromWChar(char *buf, size_t n,
     return len;
 }
 
-// checks if the input can be the beginning of a valid UTF-8 string
-bool wxIsUTF8Prefix(const char *src, size_t len)
-{
-    unsigned char l;
-    for ( size_t i = 0; i < len; ++i )
-    {
-        l = tableUtf8Lengths[(unsigned char)src[i]];
-        if ( !l )
-            return false; // invalid leading byte
-        while ( --l )
-        {
-            if ( ++i == len )
-                return true; // truncated sequence
-            if ( (src[i] & 0xC0) != 0x80 )
-                return false; // invalid continuation byte
-        }
-    }
-    return true;
-}
-
 // ============================================================================
 // UTF-16
 // ============================================================================