minix/external/bsd/nvi/dist/ex/ex_file.c

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/* $NetBSD: ex_file.c,v 1.2 2013/11/22 15:52:05 christos Exp $ */
/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1992, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "Id: ex_file.c,v 10.14 2001/06/25 15:19:16 skimo Exp (Berkeley) Date: 2001/06/25 15:19:16 ";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../common/common.h"
/*
* ex_file -- :f[ile] [name]
* Change the file's name and display the status line.
*
* PUBLIC: int ex_file __P((SCR *, EXCMD *));
*/
int
ex_file(SCR *sp, EXCMD *cmdp)
{
char *p;
FREF *frp;
const char *np;
size_t nlen;
NEEDFILE(sp, cmdp);
switch (cmdp->argc) {
case 0:
break;
case 1:
frp = sp->frp;
/* Make sure can allocate enough space. */
INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1,
np, nlen);
if ((p = v_strdup(sp, np, nlen - 1)) == NULL)
return (1);
/* If already have a file name, it becomes the alternate. */
if (!F_ISSET(frp, FR_TMPFILE))
set_alt_name(sp, frp->name);
/* Free the previous name. */
free(frp->name);
frp->name = p;
/*
* The file has a real name, it's no longer a temporary,
* clear the temporary file flags.
*/
F_CLR(frp, FR_TMPEXIT | FR_TMPFILE);
/* Have to force a write if the file exists, next time. */
F_SET(frp, FR_NAMECHANGE);
/* Notify the screen. */
(void)sp->gp->scr_rename(sp, sp->frp->name, 1);
break;
default:
abort();
}
msgq_status(sp, sp->lno, MSTAT_SHOWLAST);
return (0);
}