126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)ex_edit.c 8.15 (Berkeley) 3/8/94";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <errno.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include "compat.h"
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#include <db.h>
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#include <regex.h>
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#include "vi.h"
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#include "excmd.h"
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/*
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* ex_edit -- :e[dit][!] [+cmd] [file]
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* :vi[sual][!] [+cmd] [file]
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*
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* Edit a file; if none specified, re-edit the current file. The second
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* form of the command can only be executed while in vi mode. See the
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* hack in ex.c:ex_cmd().
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*
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* !!!
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* Historic vi didn't permit the '+' command form without specifying
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* a file name as well.
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*/
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int
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ex_edit(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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ARGS *ap;
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FREF *frp;
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frp = sp->frp;
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switch (cmdp->argc) {
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case 0:
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/*
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* If the name has been changed, we edit that file, not the
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* original name. If the user was editing a temporary file,
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* create another one. The reason for this is that we do
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* special exit processing of temporary files, and reusing
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* them is tricky.
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*/
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if (frp->cname != NULL) {
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if ((frp = file_add(sp, frp, frp->cname, 1)) == NULL)
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return (1);
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set_alt_name(sp, sp->frp->cname);
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} else if (frp->name == NULL)
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if ((frp = file_add(sp, frp, NULL, 1)) == NULL)
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return (1);
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break;
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case 1:
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ap = cmdp->argv[0];
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if ((frp = file_add(sp, sp->frp, ap->bp, 1)) == NULL)
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return (1);
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set_alt_name(sp, ap->bp);
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break;
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default:
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abort();
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}
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/*
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* Check for modifications.
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*
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* !!!
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* Contrary to POSIX 1003.2-1992, autowrite did not affect :edit.
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*/
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if (F_ISSET(ep, F_MODIFIED) &&
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ep->refcnt <= 1 && !F_ISSET(cmdp, E_FORCE)) {
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msgq(sp, M_ERR,
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"Modified since last write; write or use ! to override.");
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return (1);
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}
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/* Switch files. */
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if (file_init(sp, frp, NULL, F_ISSET(cmdp, E_FORCE)))
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return (1);
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F_SET(sp, S_FSWITCH);
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return (0);
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}
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