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/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)ex_preserve.c 8.12 (Berkeley) 8/4/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include "compat.h"
#include <db.h>
#include <regex.h>
#include "vi.h"
#include "excmd.h"
/*
* ex_preserve -- :pre[serve]
* Push the file to recovery.
*/
int
ex_preserve(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
recno_t lno;
if (!F_ISSET(ep, F_RCV_ON)) {
msgq(sp, M_ERR, "Preservation of this file not possible");
return (1);
}
/* If recovery not initialized, do so. */
if (F_ISSET(ep, F_FIRSTMODIFY) && rcv_init(sp, ep))
return (1);
/* Force the file to be read in, in case it hasn't yet. */
if (file_lline(sp, ep, &lno))
return (1);
/* Sync to disk. */
if (rcv_sync(sp, ep, RCV_SNAPSHOT))
return (1);
msgq(sp, M_INFO, "File preserved");
return (0);
}
/*
* ex_recover -- :rec[over][!] file
*
* Recover the file.
*/
int
ex_recover(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
ARGS *ap;
FREF *frp;
ap = cmdp->argv[0];
/* Set the alternate file name. */
set_alt_name(sp, ap->bp);
/*
* Check for modifications. Autowrite did not historically
* affect :recover.
*/
if (file_m2(sp, ep, F_ISSET(cmdp, E_FORCE)))
return (1);
/* Get a file structure for the file. */
if ((frp = file_add(sp, ap->bp)) == NULL)
return (1);
/* Set the recover bit. */
F_SET(frp, FR_RECOVER);
/* Switch files. */
if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
return (1);
F_SET(sp, S_FSWITCH);
return (0);
}
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