convert.h

/* 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 _tdsguard_cXIvgxMqCzaBT7f54eQeMp_
#define _tdsguard_cXIvgxMqCzaBT7f54eQeMp_

#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);
ptrdiff_t tds_char2hex(TDS_CHAR * dest, size_t destlen, const TDS_CHAR * src, size_t srclen);
size_t tds_hex_trim(const TDS_CHAR ** p_src, size_t srclen);
TDS_INT tds_convert(const TDSCONTEXT * context, int srctype, const void *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);

/* Fast int to string (massively outperforms sprintf in hot loop).
 * No null termination; returns number of characters read.
 */
size_t tds_u32toa_fast_right(char out[10], uint32_t v);
size_t tds_u32toa_fast(char out[10], uint32_t v);
size_t tds_i32toa_fast(char out[11], int32_t v);
void tds_02d_fast(char out[2], int v);  /* v must be 0-99 (non negative) */

#ifdef __cplusplus
#if 0
{
#endif
}
#endif

#include <freetds/popvis.h>

#endif /* _tdsguard_cXIvgxMqCzaBT7f54eQeMp_ */