diff options
Diffstat (limited to 'sql/field_conv.cc')
| -rw-r--r-- | sql/field_conv.cc | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sql/field_conv.cc b/sql/field_conv.cc index 3200f2ca9b2..95ff985376d 100644 --- a/sql/field_conv.cc +++ b/sql/field_conv.cc @@ -428,6 +428,21 @@ static void do_varstring2(Copy_field *copy) length); } + +static void do_varstring2_mb(Copy_field *copy) +{ + int well_formed_error; + CHARSET_INFO *cs= copy->from_field->charset(); + uint char_length= (copy->to_length - HA_KEY_BLOB_LENGTH) / cs->mbmaxlen; + uint from_length= uint2korr(copy->from_ptr); + const char *from_beg= copy->from_ptr + HA_KEY_BLOB_LENGTH; + uint length= cs->cset->well_formed_len(cs, from_beg, from_beg + from_length, + char_length, &well_formed_error); + int2store(copy->to_ptr, length); + memcpy(copy->to_ptr+HA_KEY_BLOB_LENGTH, from_beg, length); +} + + /*************************************************************************** ** The different functions that fills in a Copy_field class ***************************************************************************/ @@ -587,7 +602,8 @@ void (*Copy_field::get_copy_func(Field *to,Field *from))(Copy_field*) return do_field_string; if (to_length != from_length) return (((Field_varstring*) to)->length_bytes == 1 ? - do_varstring1 : do_varstring2); + do_varstring1 : (from->charset()->mbmaxlen == 1 ? + do_varstring2 : do_varstring2_mb)); } else if (to_length < from_length) return (from->charset()->mbmaxlen == 1 ? |