116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/*-
|
|
* 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
|
|
/* from: static char sccsid[] = "@(#)ex_edit.c 8.14 (Berkeley) 1/22/94"; */
|
|
static char *rcsid = "$Id: ex_edit.c,v 1.2 1994/01/24 06:40:15 cgd Exp $";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "vi.h"
|
|
#include "excmd.h"
|
|
|
|
/*
|
|
* ex_edit -- :e[dit][!] [+cmd] [file]
|
|
* :vi[sual][!] [+cmd] [file]
|
|
*
|
|
* Edit a file; if none specified, re-edit the current file. The second
|
|
* form of the command can only be executed while in vi mode. See the
|
|
* hack in ex.c:ex_cmd().
|
|
*
|
|
* !!!
|
|
* Historic vi didn't permit the '+' command form without specifying
|
|
* a file name as well.
|
|
*/
|
|
int
|
|
ex_edit(sp, ep, cmdp)
|
|
SCR *sp;
|
|
EXF *ep;
|
|
EXCMDARG *cmdp;
|
|
{
|
|
ARGS *ap;
|
|
FREF *frp;
|
|
|
|
frp = sp->frp;
|
|
switch (cmdp->argc) {
|
|
case 0:
|
|
/*
|
|
* If the name has been changed, we edit that file, not the
|
|
* original name. If the user was editing a temporary file,
|
|
* create another one. The reason for this is that we do
|
|
* special exit processing of temporary files, and reusing
|
|
* them is tricky.
|
|
*/
|
|
if (frp->cname != NULL) {
|
|
if ((frp = file_add(sp, frp, frp->cname, 1)) == NULL)
|
|
return (1);
|
|
set_alt_name(sp, sp->frp->cname);
|
|
} else if (frp->name == NULL)
|
|
if ((frp = file_add(sp, frp, NULL, 1)) == NULL)
|
|
return (1);
|
|
break;
|
|
case 1:
|
|
ap = cmdp->argv[0];
|
|
if ((frp = file_add(sp, sp->frp, ap->bp, 1)) == NULL)
|
|
return (1);
|
|
set_alt_name(sp, ap->bp);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
/*
|
|
* Check for modifications.
|
|
*
|
|
* !!!
|
|
* Contrary to POSIX 1003.2-1992, autowrite did not affect :edit.
|
|
*/
|
|
if (F_ISSET(ep, F_MODIFIED) &&
|
|
ep->refcnt <= 1 && !F_ISSET(cmdp, E_FORCE)) {
|
|
msgq(sp, M_ERR,
|
|
"Modified since last write; write or use ! to override.");
|
|
return (1);
|
|
}
|
|
|
|
/* Switch files. */
|
|
if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
|
|
return (1);
|
|
F_SET(sp, S_FSWITCH);
|
|
return (0);
|
|
}
|