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mirror of git://git.gnupg.org/gnupg.git synced 2024-12-25 10:49:57 +01:00
gnupg/common/membuf.h
Werner Koch b008274afd Nuked almost all trailing white space.
We better do this once and for all instead of cluttering all future
commits with diffs of trailing white spaces.  In the majority of cases
blank or single lines are affected and thus this change won't disturb
a git blame too much.  For future commits the pre-commit scripts
checks that this won't happen again.
2011-02-04 12:57:53 +01:00

49 lines
1.7 KiB
C

/* membuf.h - A simple implementation of a dynamic buffer
* Copyright (C) 2001, 2003 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GNUPG_COMMON_MEMBUF_H
#define GNUPG_COMMON_MEMBUF_H
/* The definition of the structure is private, we only need it here,
so it can be allocated on the stack. */
struct private_membuf_s
{
size_t len;
size_t size;
char *buf;
int out_of_core;
};
typedef struct private_membuf_s membuf_t;
/* Return the current length of the membuf. */
#define get_membuf_len(a) ((a)->len)
#define is_membuf_ready(a) ((a)->buf || (a)->out_of_core)
#define MEMBUF_ZERO { 0, 0, NULL, 0}
void init_membuf (membuf_t *mb, int initiallen);
void init_membuf_secure (membuf_t *mb, int initiallen);
void clear_membuf (membuf_t *mb, size_t amount);
void put_membuf (membuf_t *mb, const void *buf, size_t len);
void put_membuf_str (membuf_t *mb, const char *string);
void *get_membuf (membuf_t *mb, size_t *len);
const void *peek_membuf (membuf_t *mb, size_t *len);
#endif /*GNUPG_COMMON_MEMBUF_H*/