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#include <sys/types.h>
13#include <sys/queue.h>
14#include <sys/time.h>
15
16#include <bitstring.h>
17#include <errno.h>
18#include <limits.h>
19#include <stdio.h>
20#include <stdlib.h>
21#include <string.h>
22
23#include "../common/common.h"
24
25/*
26 * ex_file -- :f[ile] [name]
27 *	Change the file's name and display the status line.
28 *
29 * PUBLIC: int ex_file(SCR *, EXCMD *);
30 */
31int
32ex_file(SCR *sp, EXCMD *cmdp)
33{
34	char *p;
35	FREF *frp;
36	char *np;
37	size_t nlen;
38
39	NEEDFILE(sp, cmdp);
40
41	switch (cmdp->argc) {
42	case 0:
43		break;
44	case 1:
45		frp = sp->frp;
46
47		/* Make sure can allocate enough space. */
48		INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1,
49			    np, nlen);
50		if ((p = v_strdup(sp, np, nlen - 1)) == NULL)
51			return (1);
52
53		/* If already have a file name, it becomes the alternate. */
54		if (!F_ISSET(frp, FR_TMPFILE))
55			set_alt_name(sp, frp->name);
56
57		/* Free the previous name. */
58		free(frp->name);
59		frp->name = p;
60
61		/*
62		 * The file has a real name, it's no longer a temporary,
63		 * clear the temporary file flags.
64		 */
65		F_CLR(frp, FR_TMPEXIT | FR_TMPFILE);
66
67		/* Have to force a write if the file exists, next time. */
68		F_SET(frp, FR_NAMECHANGE);
69
70		/* Notify the screen. */
71		(void)sp->gp->scr_rename(sp, sp->frp->name, 1);
72		break;
73	default:
74		abort();
75	}
76	msgq_status(sp, sp->lno, MSTAT_SHOWLAST);
77	return (0);
78}
79