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/*-
* Copyright (c) 1992, 1993
* 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[] = "@(#)v_switch.c 8.5 (Berkeley) 11/23/93";
#endif /* not lint */
#include <sys/types.h>
#include <string.h>
#include "vi.h"
#include "vcmd.h"
#include "excmd.h"
/*
* v_switch -- ^^
* Switch to the previous file.
*/
int
v_switch(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
EXCMDARG cmd;
char *name;
/*
* Try the alternate file name, then the previous file
* name. Use the real name, not the user's current name.
*/
if (sp->alt_name != NULL)
name = sp->alt_name;
else if (sp->p_frp != NULL)
name = sp->p_frp->name;
else {
msgq(sp, M_ERR, "No previous file to edit.");
return (1);
}
/* If autowrite is set, write out the file. */
if (F_ISSET(ep, F_MODIFIED))
if (O_ISSET(sp, O_AUTOWRITE)) {
if (file_write(sp, ep, NULL, NULL, NULL, FS_ALL))
return (1);
} else {
msgq(sp, M_ERR,
"Modified since last write; write or use :edit! to override.");
return (1);
}
SETCMDARG(cmd, C_EDIT, 0, OOBLNO, OOBLNO, 0, name);
return (sp->s_ex_cmd(sp, ep, &cmd, rp));
}
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