/*
* Copyright (C) 2003 Sam Horrocks
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
typedef struct _CopyBuf {
CircBuf circ;
int maxsz;
int eof;
int rdfd;
int wrfd;
int write_err;
} CopyBuf;
#define speedy_cb_write_err(cb) ((cb)->write_err + 0)
#define speedy_cb_eof(cb) ((cb)->eof + 0)
#define speedy_cb_seteof(cb) do { (cb)->eof = 1;} while (0)
#define speedy_cb_data_len(cb) (speedy_circ_data_len(&(cb)->circ))
#define speedy_cb_free_len(cb) ((cb)->maxsz - speedy_cb_data_len(cb))
#define speedy_cb_canread(cb) \
(speedy_cb_free_len(cb) && !speedy_cb_eof(cb) && !speedy_cb_write_err(cb))
#define speedy_cb_canwrite(cb) \
(speedy_cb_data_len(cb) && !speedy_cb_write_err(cb))
#define speedy_cb_copydone(cb) \
((speedy_cb_eof(cb) && !speedy_cb_data_len(cb)) || speedy_cb_write_err(cb))
#define speedy_cb_set_write_err(cb, e) \
do {(cb)->write_err = (e);} while (0)
#define speedy_cb_setfd(cb, r, w) \
do { (cb)->rdfd = (r); (cb)->wrfd = (w); } while (0)
void speedy_cb_init(
CopyBuf *cb, int maxsz, int rdfd, int wrfd, const SpeedyBuf *contents
);
void speedy_cb_free(CopyBuf *cb);
void speedy_cb_read(CopyBuf *cb);
void speedy_cb_write(CopyBuf *cb);
int speedy_cb_shift(CopyBuf *cb);