convert.h

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/* FreeTDS - Library of routines accessing Sybase and Microsoft databases
 * Copyright (C) 1998-1999  Brian Bruns
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
 
#ifndef _tdsconvert_h_
#define _tdsconvert_h_
 
#include <freetds/pushvis.h>
 
#ifdef __cplusplus
extern "C"
{
#if 0
}
#endif
#endif
 
typedef union conv_result
{
    /* fixed */
    TDS_TINYINT ti;
    TDS_SMALLINT si;
    TDS_USMALLINT usi;
    TDS_INT i;
    TDS_UINT ui;
    TDS_INT8 bi;
    TDS_UINT8 ubi;
    TDS_FLOAT f;
    TDS_REAL r;
    TDS_MONEY m;
    TDS_MONEY4 m4;
    TDS_DATETIME dt;
    TDS_DATETIME4 dt4;
    TDS_DATETIMEALL dta;
    TDS_TIME time;
    TDS_DATE date;
    TDS_BIGTIME bigtime;
    TDS_BIGDATETIME bigdatetime;
    TDS_NUMERIC n;
    TDS_UNIQUE u;
 
    /* variable */
    TDS_CHAR *c;
    TDS_CHAR *ib;
 
    /* sized buffer types */
    struct cc_t {
        TDS_CHAR *c;
        TDS_UINT len;
    } cc;
    struct cb_t {
        TDS_CHAR *ib;
        TDS_UINT len;
    } cb;
}
CONV_RESULT;
 
/*
 * Failure return codes for tds_convert()
 */
#define TDS_CONVERT_FAIL    -1  /* unspecified failure */
#define TDS_CONVERT_NOAVAIL -2  /* conversion does not exist */
#define TDS_CONVERT_SYNTAX  -3  /* syntax error in source field */
#define TDS_CONVERT_NOMEM   -4  /* insufficient memory */
#define TDS_CONVERT_OVERFLOW    -5  /* result too large */
 
/* sized types */
#define TDS_CONVERT_CHAR    256
#define TDS_CONVERT_BINARY  257
 
unsigned char tds_willconvert(int srctype, int desttype);
 
TDS_SERVER_TYPE tds_get_null_type(TDS_SERVER_TYPE srctype);
ssize_t tds_char2hex(TDS_CHAR *dest, size_t destlen,
                     const TDS_CHAR * src, size_t srclen);
TDS_INT tds_convert(const TDSCONTEXT * context, int srctype, const TDS_CHAR * src, TDS_UINT srclen, int desttype, CONV_RESULT * cr);
 
size_t tds_strftime(char *buf, size_t maxsize, const char *format, const TDSDATEREC * timeptr, int prec);
 
#ifdef __cplusplus
#if 0
{
#endif
}
#endif
 
#include <freetds/popvis.h>
 
#endif /* _tdsconvert_h_ */