use three-argument AC_DEFINE instead of acconfig.h
[nvi.git] / ex / ex_visual.c
blob943e0dcc3d8e9c6115cff215f358616b859fbf06
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.
7 * See the LICENSE file for redistribution information.
8 */
10 #include "config.h"
12 #ifndef lint
13 static const char sccsid[] = "$Id: ex_visual.c,v 10.16 2001/08/29 11:04:13 skimo Exp $ (Berkeley) $Date: 2001/08/29 11:04:13 $";
14 #endif /* not lint */
16 #include <sys/types.h>
17 #include <sys/queue.h>
18 #include <sys/time.h>
20 #include <bitstring.h>
21 #include <limits.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
27 #include "../common/common.h"
28 #include "../vi/vi.h"
31 * ex_visual -- :[line] vi[sual] [^-.+] [window_size] [flags]
32 * Switch to visual mode.
34 * PUBLIC: int ex_visual __P((SCR *, EXCMD *));
36 int
37 ex_visual(SCR *sp, EXCMD *cmdp)
39 SCR *tsp;
40 size_t len;
41 int pos;
42 char buf[256];
43 size_t wlen;
44 CHAR_T *wp;
46 /* If open option off, disallow visual command. */
47 if (!O_ISSET(sp, O_OPEN)) {
48 msgq(sp, M_ERR,
49 "175|The visual command requires that the open option be set");
50 return (1);
53 /* Move to the address. */
54 sp->lno = cmdp->addr1.lno == 0 ? 1 : cmdp->addr1.lno;
57 * Push a command based on the line position flags. If no
58 * flag specified, the line goes at the top of the screen.
60 switch (FL_ISSET(cmdp->iflags,
61 E_C_CARAT | E_C_DASH | E_C_DOT | E_C_PLUS)) {
62 case E_C_CARAT:
63 pos = '^';
64 break;
65 case E_C_DASH:
66 pos = '-';
67 break;
68 case E_C_DOT:
69 pos = '.';
70 break;
71 case E_C_PLUS:
72 pos = '+';
73 break;
74 default:
75 sp->frp->lno = sp->lno;
76 sp->frp->cno = 0;
77 (void)nonblank(sp, sp->lno, &sp->cno);
78 F_SET(sp->frp, FR_CURSORSET);
79 goto nopush;
82 if (FL_ISSET(cmdp->iflags, E_C_COUNT))
83 len = snprintf(buf, sizeof(buf),
84 "%luz%c%lu", sp->lno, pos, cmdp->count);
85 else
86 len = snprintf(buf, sizeof(buf), "%luz%c", sp->lno, pos);
87 CHAR2INT(sp, buf, len, wp, wlen);
88 (void)v_event_push(sp, NULL, wp, wlen, CH_NOMAP | CH_QUOTED);
91 * !!!
92 * Historically, if no line address was specified, the [p#l] flags
93 * caused the cursor to be moved to the last line of the file, which
94 * was then positioned as described above. This seems useless, so
95 * I haven't implemented it.
97 switch (FL_ISSET(cmdp->iflags, E_C_HASH | E_C_LIST | E_C_PRINT)) {
98 case E_C_HASH:
99 O_SET(sp, O_NUMBER);
100 break;
101 case E_C_LIST:
102 O_SET(sp, O_LIST);
103 break;
104 case E_C_PRINT:
105 break;
108 nopush: /*
109 * !!!
110 * You can call the visual part of the editor from within an ex
111 * global command.
113 * XXX
114 * Historically, undoing a visual session was a single undo command,
115 * i.e. you could undo all of the changes you made in visual mode.
116 * We don't get this right; I'm waiting for the new logging code to
117 * be available.
119 * It's explicit, don't have to wait for the user, unless there's
120 * already a reason to wait.
122 if (!F_ISSET(sp, SC_SCR_EXWROTE))
123 F_SET(sp, SC_EX_WAIT_NO);
125 if (F_ISSET(sp, SC_EX_GLOBAL)) {
127 * When the vi screen(s) exit, we don't want to lose our hold
128 * on this screen or this file, otherwise we're going to fail
129 * fairly spectacularly.
131 ++sp->refcnt;
132 ++sp->ep->refcnt;
133 /* XXXX where is this decremented ? */
136 * Fake up a screen pointer -- vi doesn't get to change our
137 * underlying file, regardless.
139 tsp = sp;
140 if (vi(&tsp))
141 return (1);
144 * !!!
145 * Historically, if the user exited the vi screen(s) using an
146 * ex quit command (e.g. :wq, :q) ex/vi exited, it was only if
147 * they exited vi using the Q command that ex continued. Some
148 * early versions of nvi continued in ex regardless, but users
149 * didn't like the semantic.
151 * Reset the screen.
153 if (ex_init(sp))
154 return (1);
156 /* Move out of the vi screen. */
157 (void)ex_puts(sp, "\n");
158 } else {
159 F_CLR(sp, SC_EX | SC_SCR_EX);
160 F_SET(sp, SC_VI);
162 return (0);