94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
/*-
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* Copyright (c) 2000-2008 Poul-Henning Kamp
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* Copyright (c) 2000-2008 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_SBUF_H_
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#define _SYS_SBUF_H_
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#include <sys/_types.h>
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struct sbuf;
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typedef int (sbuf_drain_func)(void *, const char *, int);
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/*
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* Structure definition
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*/
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struct sbuf {
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char *s_buf; /* storage buffer */
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sbuf_drain_func *s_drain_func; /* drain function */
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void *s_drain_arg; /* user-supplied drain argument */
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int s_error; /* current error code */
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ssize_t s_size; /* size of storage buffer */
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ssize_t s_len; /* current length of string */
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#define SBUF_FIXEDLEN 0x00000000 /* fixed length buffer (default) */
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#define SBUF_AUTOEXTEND 0x00000001 /* automatically extend buffer */
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#define SBUF_USRFLAGMSK 0x0000ffff /* mask of flags the user may specify */
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#define SBUF_DYNAMIC 0x00010000 /* s_buf must be freed */
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#define SBUF_FINISHED 0x00020000 /* set by sbuf_finish() */
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#define SBUF_DYNSTRUCT 0x00080000 /* sbuf must be freed */
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int s_flags; /* flags */
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};
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__BEGIN_DECLS
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/*
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* API functions
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*/
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struct sbuf *sbuf_new(struct sbuf *, char *, int, int);
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#define sbuf_new_auto() \
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sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND)
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void sbuf_clear(struct sbuf *);
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int sbuf_setpos(struct sbuf *, ssize_t);
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int sbuf_bcat(struct sbuf *, const void *, size_t);
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int sbuf_bcpy(struct sbuf *, const void *, size_t);
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int sbuf_cat(struct sbuf *, const char *);
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int sbuf_cpy(struct sbuf *, const char *);
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int sbuf_printf(struct sbuf *, const char *, ...)
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__printflike(2, 3);
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int sbuf_vprintf(struct sbuf *, const char *, __va_list)
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__printflike(2, 0);
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int sbuf_putc(struct sbuf *, int);
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void sbuf_set_drain(struct sbuf *, sbuf_drain_func *, void *);
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int sbuf_trim(struct sbuf *);
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int sbuf_error(const struct sbuf *);
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int sbuf_finish(struct sbuf *);
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char *sbuf_data(struct sbuf *);
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ssize_t sbuf_len(struct sbuf *);
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int sbuf_done(const struct sbuf *);
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void sbuf_delete(struct sbuf *);
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#ifdef _KERNEL
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struct uio;
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struct sbuf *sbuf_uionew(struct sbuf *, struct uio *, int *);
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int sbuf_bcopyin(struct sbuf *, const void *, size_t);
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int sbuf_copyin(struct sbuf *, const void *, size_t);
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#endif
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__END_DECLS
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#endif
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