Line data    Source code

       1             : /* FreeTDS - Library of routines accessing Sybase and Microsoft databases
       2             :  * Copyright (C) 2008  Ziglio Frediano
       3             :  *
       4             :  * This library is free software; you can redistribute it and/or
       5             :  * modify it under the terms of the GNU Library General Public
       6             :  * License as published by the Free Software Foundation; either
       7             :  * version 2 of the License, or (at your option) any later version.
       8             :  *
       9             :  * This library is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             :  * Library General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU Library General Public
      15             :  * License along with this library; if not, write to the
      16             :  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
      17             :  * Boston, MA 02111-1307, USA.
      18             :  */
      19             : 
      20             : #include <config.h>
      21             : 
      22             : #include <stdarg.h>
      23             : #include <stdio.h>
      24             : 
      25             : #if HAVE_STDLIB_H
      26             : #include <stdlib.h>
      27             : #endif /* HAVE_STDLIB_H */
      28             : 
      29             : #include <freetds/odbc.h>
      30             : 
      31             : #include <freetds/iconv.h>
      32             : #include <freetds/encodings.h>
      33             : 
      34             : /* Compile-time check that sizes are defined correctly
      35             :  * (otherwise the #if in odbc.h can malfunction)
      36             :  */
      37             : TDS_COMPILE_CHECK(sizecheck_sqlwchar, SIZEOF_SQLWCHAR == sizeof(SQLWCHAR));
      38             : TDS_COMPILE_CHECK(sizecheck_wchar_t, SIZEOF_WCHAR_T == sizeof(wchar_t));
      39             : 
      40             : #ifndef sqlwcslen
      41       22648 : size_t sqlwcslen(const SQLWCHAR * s)
      42             : {
      43       22648 :         const SQLWCHAR *p = s;
      44             : 
      45      858151 :         while (*p)
      46      812855 :                 ++p;
      47       22648 :         return p - s;
      48             : }
      49             : #endif
      50             : 
      51             : #ifdef ENABLE_ODBC_WIDE
      52             : #if SIZEOF_SQLWCHAR != SIZEOF_WCHAR_T
      53             : /**
      54             :  * Convert a SQLWCHAR string into a wchar_t
      55             :  * Used only for debugging purpose
      56             :  * \param str string to convert
      57             :  * \param bufs linked list of buffer
      58             :  * \return string converted
      59             :  */
      60           0 : const wchar_t *sqlwstr(const SQLWCHAR *str, SQLWSTRBUF **bufs)
      61             : {
      62             :         wchar_t *dst, *dst_end;
      63           0 :         const SQLWCHAR *src = str;
      64             :         SQLWSTRBUF *buf;
      65             : 
      66           0 :         if (!str)
      67             :                 return NULL;
      68             : 
      69             :         /* allocate buffer for string, we do not care for memory errors */
      70           0 :         buf = tds_new0(SQLWSTRBUF, 1);
      71           0 :         if (!buf)
      72             :                 return NULL;
      73           0 :         buf->next = *bufs;
      74           0 :         *bufs = buf;
      75             : 
      76           0 :         dst = buf->buf;
      77           0 :         dst_end = dst + (TDS_VECTOR_SIZE(buf->buf) - 1);
      78             : 
      79           0 :         for (; *src && dst < dst_end; *dst++ = *src++)
      80           0 :                 continue;
      81           0 :         *dst = L'\0';
      82             : 
      83           0 :         return buf->buf;
      84             : }
      85             : 
      86           0 : void sqlwstr_free(SQLWSTRBUF *bufs)
      87             : {
      88           0 :         while (bufs) {
      89           0 :                 SQLWSTRBUF *buf = bufs;
      90           0 :                 bufs = buf->next;
      91           0 :                 free(buf);
      92             :         }
      93           0 : }
      94             : #endif
      95             : #endif
      96             : 
      97             : #if SIZEOF_SQLWCHAR == 2
      98             : # if WORDS_BIGENDIAN
      99             : #  define ODBC_WIDE_CANONIC TDS_CHARSET_UCS_2BE
     100             : #  define ODBC_WIDE_CANONIC_UTF TDS_CHARSET_UTF_16BE
     101             : # else
     102             : #  define ODBC_WIDE_CANONIC TDS_CHARSET_UCS_2LE
     103             : #  define ODBC_WIDE_CANONIC_UTF TDS_CHARSET_UTF_16LE
     104             : # endif
     105             : #elif SIZEOF_SQLWCHAR == 4
     106             : # if WORDS_BIGENDIAN
     107             : #  define ODBC_WIDE_CANONIC TDS_CHARSET_UCS_4BE
     108             : # else
     109             : #  define ODBC_WIDE_CANONIC TDS_CHARSET_UCS_4LE
     110             : # endif
     111             : #else
     112             : #error SIZEOF_SQLWCHAR not supported !!
     113             : #endif
     114             : 
     115        1902 : int odbc_get_wide_canonic(TDSCONNECTION *conn)
     116             : {
     117             : #if SIZEOF_SQLWCHAR == 2
     118        1902 :         if (conn->char_convs[client2ucs2]->to.charset.canonic == TDS_CHARSET_UTF_16LE)
     119             :                 return ODBC_WIDE_CANONIC_UTF;
     120             : #endif
     121           0 :         return ODBC_WIDE_CANONIC;
     122             : }