ex_file.c revision 1.2 
1/*-
2 * Copyright (c) 1992, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 *	Keith Bostic.  All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10#include "config.h"
11
12#ifndef lint
13static const char sccsid[] = "@(#)ex_file.c	10.11 (Berkeley) 5/2/96";
14#endif /* not lint */
15
16#include <sys/types.h>
17#include <sys/queue.h>
18
19#include <bitstring.h>
20#include <errno.h>
21#include <limits.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25
26#include "../common/common.h"
27
28/*
29 * ex_file -- :f[ile] [name]
30 *	Change the file's name and display the status line.
31 *
32 * PUBLIC: int ex_file __P((SCR *, EXCMD *));
33 */
34int
35ex_file(sp, cmdp)
36	SCR *sp;
37	EXCMD *cmdp;
38{
39	CHAR_T *p;
40	FREF *frp;
41
42	NEEDFILE(sp, cmdp);
43
44	switch (cmdp->argc) {
45	case 0:
46		break;
47	case 1:
48		frp = sp->frp;
49
50		/* Make sure can allocate enough space. */
51		if ((p = v_strdup(sp,
52		    cmdp->argv[0]->bp, cmdp->argv[0]->len)) == NULL)
53			return (1);
54
55		/* If already have a file name, it becomes the alternate. */
56		if (!F_ISSET(frp, FR_TMPFILE))
57			set_alt_name(sp, frp->name);
58
59		/* Free the previous name. */
60		free(frp->name);
61		frp->name = p;
62
63		/*
64		 * The file has a real name, it's no longer a temporary,
65		 * clear the temporary file flags.
66		 */
67		F_CLR(frp, FR_TMPEXIT | FR_TMPFILE);
68
69		/* Have to force a write if the file exists, next time. */
70		F_SET(frp, FR_NAMECHANGE);
71
72		/* Notify the screen. */
73		(void)sp->gp->scr_rename(sp);
74		break;
75	default:
76		abort();
77	}
78	msgq_status(sp, sp->lno, MSTAT_SHOWLAST);
79	return (0);
80}
81