NetBSD/usr.bin/vi/ex/ex_cd.c

84 lines
2.6 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_cd.c 8.3 (Berkeley) 12/2/93"; */
static char *rcsid = "$Id: ex_cd.c,v 1.2 1994/01/24 06:40:11 cgd Exp $";
#endif /* not lint */
#include <sys/param.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "vi.h"
#include "excmd.h"
/*
* ex_cd -- :cd[!] [directory]
* Change directories.
*/
int
ex_cd(sp, ep, cmdp)
SCR *sp;
EXF *ep;
EXCMDARG *cmdp;
{
char *dir, buf[MAXPATHLEN];
switch (cmdp->argc) {
case 0:
if ((dir = getenv("HOME")) == NULL) {
msgq(sp, M_ERR,
"Environment variable HOME not set.");
return (1);
}
break;
case 1:
dir = cmdp->argv[0]->bp;
break;
default:
abort();
}
if (chdir(dir) < 0) {
msgq(sp, M_SYSERR, dir);
return (1);
}
if (getcwd(buf, sizeof(buf)) != NULL)
msgq(sp, M_INFO, "New directory: %s", buf);
return (0);
}