1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/* $OpenBSD: ex_edit.c,v 1.3 2001/01/29 01:58:42 niklas 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[] = "@(#)ex_edit.c 10.10 (Berkeley) 4/27/96";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../common/common.h"
#include "../vi/vi.h"
static int ex_N_edit __P((SCR *, EXCMD *, FREF *, int));
/*
* ex_edit -- :e[dit][!] [+cmd] [file]
* :ex[!] [+cmd] [file]
* :vi[sual][!] [+cmd] [file]
*
* Edit a file; if none specified, re-edit the current file. The third
* form of the command can only be executed while in vi mode. See the
* hack in ex.c:ex_cmd().
*
* !!!
* Historic vi didn't permit the '+' command form without specifying
* a file name as well. This seems unreasonable, so we support it
* regardless.
*
* PUBLIC: int ex_edit __P((SCR *, EXCMD *));
*/
int
ex_edit(sp, cmdp)
SCR *sp;
EXCMD *cmdp;
{
FREF *frp;
int attach, setalt;
switch (cmdp->argc) {
case 0:
/*
* If the name has been changed, we edit that file, not the
* original name. If the user was editing a temporary file
* (or wasn't editing any file), create another one. The
* reason for not reusing temporary files is that there is
* special exit processing of them, and reuse is tricky.
*/
frp = sp->frp;
if (sp->ep == NULL || F_ISSET(frp, FR_TMPFILE)) {
if ((frp = file_add(sp, NULL)) == NULL)
return (1);
attach = 0;
} else
attach = 1;
setalt = 0;
break;
case 1:
if ((frp = file_add(sp, cmdp->argv[0]->bp)) == NULL)
return (1);
attach = 0;
setalt = 1;
set_alt_name(sp, cmdp->argv[0]->bp);
break;
default:
abort();
}
if (F_ISSET(cmdp, E_NEWSCREEN))
return (ex_N_edit(sp, cmdp, frp, attach));
/*
* Check for modifications.
*
* !!!
* Contrary to POSIX 1003.2-1992, autowrite did not affect :edit.
*/
if (file_m2(sp, FL_ISSET(cmdp->iflags, E_C_FORCE)))
return (1);
/* Switch files. */
if (file_init(sp, frp, NULL, (setalt ? FS_SETALT : 0) |
(FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0)))
return (1);
F_SET(sp, SC_FSWITCH);
return (0);
}
/*
* ex_N_edit --
* New screen version of ex_edit.
*/
static int
ex_N_edit(sp, cmdp, frp, attach)
SCR *sp;
EXCMD *cmdp;
FREF *frp;
int attach;
{
SCR *new;
/* Get a new screen. */
if (screen_init(sp->gp, sp, &new))
return (1);
if (vs_split(sp, new, 0)) {
(void)screen_end(new);
return (1);
}
/* Get a backing file. */
if (attach) {
/* Copy file state, keep the screen and cursor the same. */
new->ep = sp->ep;
++new->ep->refcnt;
new->frp = frp;
new->frp->flags = sp->frp->flags;
new->lno = sp->lno;
new->cno = sp->cno;
} else if (file_init(new, frp, NULL,
(FL_ISSET(cmdp->iflags, E_C_FORCE) ? FS_FORCE : 0))) {
(void)vs_discard(new, NULL);
(void)screen_end(new);
return (1);
}
/* Create the argument list. */
new->cargv = new->argv = ex_buildargv(sp, NULL, frp->name);
/* Set up the switch. */
sp->nextdisp = new;
F_SET(sp, SC_SSWITCH);
return (0);
}
|
