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vsb.h

/*-
 * Copyright (c) 2000 Poul-Henning Kamp and Dag-Erling Co´dan Sm°rgrav
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer
 *    in this position and unchanged.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $Id: vsb.h 1096 2006-09-20 07:50:27Z des $
 * $FreeBSD: src/sys/sys/vsb.h,v 1.14 2004/07/09 11:35:30 des Exp $
 */

#ifndef VSB_H_INCLUDED
#define VSB_H_INCLUDED

/*
 * Structure definition
 */
struct vsb {
      char        *s_buf;           /* storage buffer */
      void        *s_unused;  /* binary compatibility. */
      int          s_size;    /* size of storage buffer */
      int          s_len;           /* current length of string */
#define     VSB_FIXEDLEN      0x00000000  /* fixed length buffer (default) */
#define     VSB_AUTOEXTEND    0x00000001  /* automatically extend buffer */
#define     VSB_USRFLAGMSK 0x0000ffff     /* mask of flags the user may specify */
#define     VSB_DYNAMIC 0x00010000  /* s_buf must be freed */
#define     VSB_FINISHED      0x00020000  /* set by vsb_finish() */
#define     VSB_OVERFLOWED    0x00040000  /* vsb overflowed */
#define     VSB_DYNSTRUCT     0x00080000  /* vsb must be freed */
      int          s_flags;   /* flags */
};

__BEGIN_DECLS
/*
 * API functions
 */
struct vsb  *vsb_new(struct vsb *, char *, int, int);
void         vsb_clear(struct vsb *);
int          vsb_setpos(struct vsb *, int);
int          vsb_bcat(struct vsb *, const void *, size_t);
int          vsb_bcpy(struct vsb *, const void *, size_t);
int          vsb_cat(struct vsb *, const char *);
int          vsb_cpy(struct vsb *, const char *);
int          vsb_printf(struct vsb *, const char *, ...) /* __printflike(2, 3) */;
#ifdef va_start
int          vsb_vprintf(struct vsb *, const char *, va_list) /* __printflike(2, 0) */;
#endif
int          vsb_putc(struct vsb *, int);
int          vsb_trim(struct vsb *);
int          vsb_overflowed(struct vsb *);
void         vsb_finish(struct vsb *);
char        *vsb_data(struct vsb *);
int          vsb_len(struct vsb *);
int          vsb_done(struct vsb *);
void         vsb_delete(struct vsb *);
__END_DECLS

#endif

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