common/membuf.h

   1 /* membuf.h - A simple implementation of a dynamic buffer
   2  *      Copyright (C) 2001, 2003 Free Software Foundation, Inc.
   3  *
   4  * This file is part of GnuPG.
   5  *
   6  * GnuPG is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GnuPG is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19  * USA.
  20  */
  21
  22 #ifndef GNUPG_COMMON_MEMBUF_H
  23 #define GNUPG_COMMON_MEMBUF_H
  24
  25 /* The definition of the structure is private, we only need it here,
  26    so it can be allocated on the stack. */
  27 struct private_membuf_s
  28 {
  29   size_t len;
  30   size_t size;
  31   char *buf;
  32   int out_of_core;
  33 };
  34
  35 typedef struct private_membuf_s membuf_t;
  36
  37
  38 void init_membuf (membuf_t *mb, int initiallen);
  39 void init_membuf_secure (membuf_t *mb, int initiallen);
  40 void put_membuf  (membuf_t *mb, const void *buf, size_t len);
  41 void *get_membuf (membuf_t *mb, size_t *len);
  42
  43
  44 #endif /*GNUPG_COMMON_MEMBUF_H*/