Re-enable line cache.
[nvi.git] / vi / v_xchar.c
blobe6ec4ad46c98c0d830dec10a7c1045670685321b
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: v_xchar.c,v 10.9 1996/10/23 09:31:52 bostic Exp $ (Berkeley) $Date: 1996/10/23 09:31:52 $";
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>
24 #include "../common/common.h"
25 #include "vi.h"
28 * v_xchar -- [buffer] [count]x
29 * Deletes the character(s) on which the cursor sits.
31 * PUBLIC: int v_xchar __P((SCR *, VICMD *));
33 int
34 v_xchar(sp, vp)
35 SCR *sp;
36 VICMD *vp;
38 size_t len;
39 int isempty;
41 if (db_eget(sp, vp->m_start.lno, NULL, &len, &isempty)) {
42 if (isempty)
43 goto nodel;
44 return (1);
46 if (len == 0) {
47 nodel: msgq(sp, M_BERR, "206|No characters to delete");
48 return (1);
52 * Delete from the cursor toward the end of line, w/o moving the
53 * cursor.
55 * !!!
56 * Note, "2x" at EOL isn't the same as "xx" because the left movement
57 * of the cursor as part of the 'x' command isn't taken into account.
58 * Historically correct.
60 if (F_ISSET(vp, VC_C1SET))
61 vp->m_stop.cno += vp->count - 1;
62 if (vp->m_stop.cno >= len - 1) {
63 vp->m_stop.cno = len - 1;
64 vp->m_final.cno = vp->m_start.cno ? vp->m_start.cno - 1 : 0;
65 } else
66 vp->m_final.cno = vp->m_start.cno;
68 if (cut(sp,
69 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
70 &vp->m_start, &vp->m_stop, 0))
71 return (1);
72 return (del(sp, &vp->m_start, &vp->m_stop, 0));
76 * v_Xchar -- [buffer] [count]X
77 * Deletes the character(s) immediately before the current cursor
78 * position.
80 * PUBLIC: int v_Xchar __P((SCR *, VICMD *));
82 int
83 v_Xchar(sp, vp)
84 SCR *sp;
85 VICMD *vp;
87 u_long cnt;
89 if (vp->m_start.cno == 0) {
90 v_sol(sp);
91 return (1);
94 cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
95 if (cnt >= vp->m_start.cno)
96 vp->m_start.cno = 0;
97 else
98 vp->m_start.cno -= cnt;
99 --vp->m_stop.cno;
100 vp->m_final.cno = vp->m_start.cno;
102 if (cut(sp,
103 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
104 &vp->m_start, &vp->m_stop, 0))
105 return (1);
106 return (del(sp, &vp->m_start, &vp->m_stop, 0));