membuf.h
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membuf.h
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	/* 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 GPA_MEMBUF_H
	#define GPA_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, size_t initiallen);
	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);


	#endif /GPA_MEMBUF_H/