Class String_copier

sql/sql_string.h:58–95

class String_copier: public String_copy_status,
                     protected MY_STRCONV_STATUS
{
public:
  const char *cannot_convert_error_pos() const
  { return m_cannot_convert_error_pos; }
  const char *most_important_error_pos() const
  {
    return well_formed_error_pos() ? well_formed_error_pos() :
                                     cannot_convert_error_pos();
  }
  /*
    Convert a string between character sets.
    "dstcs" and "srccs" cannot be &my_charset_bin.
  */
  size_t convert_fix(CHARSET_INFO *dstcs, char *dst, size_t dst_length,
                     CHARSET_INFO *srccs, const char *src, size_t src_length,
                     size_t nchars)
  {
    return my_convert_fix(dstcs, dst, dst_length,
                          srccs, src, src_length, nchars, this, this);
  }
  /*
     Copy a string. Fix bad bytes/characters to '?'.
  */
  uint well_formed_copy(CHARSET_INFO *to_cs, char *to, size_t to_length,
                        CHARSET_INFO *from_cs, const char *from,
                        size_t from_length, size_t nchars);
  // Same as above, but without the "nchars" limit.
  uint well_formed_copy(CHARSET_INFO *to_cs, char *to, size_t to_length,
                        CHARSET_INFO *from_cs, const char *from,
                        size_t from_length)
  {
    return well_formed_copy(to_cs, to, to_length,
                            from_cs, from, from_length,
                            from_length /* No limit on "nchars"*/);
  }
};


size_t my_copy_with_hex_escaping(CHARSET_INFO *cs,