tdsstring.h

/* FreeTDS - Library of routines accessing Sybase and Microsoft databases
 * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004  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 _tdsstring_h_
#define _tdsstring_h_

/* $Id: tdsstring.h,v 1.19 2007/07/01 10:10:52 freddy77 Exp $ */

#if defined(__GNUC__) && __GNUC__ >= 4
#pragma GCC visibility push(hidden)
#endif

extern const char tds_str_empty[1];

/* TODO do some function and use inline if available */

#if ENABLE_EXTRA_CHECKS
void tds_dstr_init(DSTR * s);
int tds_dstr_isempty(DSTR * s);
char *tds_dstr_buf(DSTR * s);
size_t tds_dstr_len(DSTR * s);
#else

#define tds_dstr_init(s) \
    do { DSTR *_tds_s = (s); _tds_s->dstr_size = 0; _tds_s->dstr_s = (char*) tds_str_empty; } while(0)

#define tds_dstr_isempty(s) \
    ((s)->dstr_size == 0)
#define tds_dstr_buf(s) \
    ((s)->dstr_s)
#define tds_dstr_len(s) \
    ((s)->dstr_size)
#endif

#define tds_dstr_cstr(s) \
    ((const char* ) tds_dstr_buf(s))

void tds_dstr_zero(DSTR * s);
void tds_dstr_free(DSTR * s);

DSTR* tds_dstr_dup(DSTR * s, const DSTR * src);
DSTR* tds_dstr_copy(DSTR * s, const char *src);
DSTR* tds_dstr_copyn(DSTR * s, const char *src, unsigned int length);
DSTR* tds_dstr_set(DSTR * s, char *src);

DSTR* tds_dstr_setlen(DSTR *s, unsigned int length);
DSTR* tds_dstr_alloc(DSTR *s, unsigned int length);

#if defined(__GNUC__) && __GNUC__ >= 4
#pragma GCC visibility pop
#endif

#endif /* _tdsstring_h_ */