1 /* $NetBSD: v_yank.c,v 1.3 2014/01/26 21:43:45 christos Exp $ */
2 /*-
3 * Copyright (c) 1992, 1993, 1994
4 * The Regents of the University of California. All rights reserved.
5 * Copyright (c) 1992, 1993, 1994, 1995, 1996
6 * Keith Bostic. All rights reserved.
7 *
8 * See the LICENSE file for redistribution information.
9 */
10
11 #include "config.h"
12
13 #include <sys/cdefs.h>
14 #if 0
15 #ifndef lint
16 static const char sccsid[] = "Id: v_yank.c,v 10.10 2001/06/25 15:19:36 skimo Exp (Berkeley) Date: 2001/06/25 15:19:36 ";
17 #endif /* not lint */
18 #else
19 __RCSID("$NetBSD: v_yank.c,v 1.3 2014/01/26 21:43:45 christos Exp $");
20 #endif
21
22 #include <sys/types.h>
23 #include <sys/queue.h>
24 #include <sys/time.h>
25
26 #include <bitstring.h>
27 #include <limits.h>
28 #include <stdio.h>
29
30 #include "../common/common.h"
31 #include "vi.h"
32
33 /*
34 * v_yank -- [buffer][count]y[count][motion]
35 * [buffer][count]Y
36 * Yank text (or lines of text) into a cut buffer.
37 *
38 * !!!
39 * Historic vi moved the cursor to the from MARK if it was before the current
40 * cursor and on a different line, e.g., "yk" moves the cursor but "yj" and
41 * "yl" do not. Unfortunately, it's too late to change this now. Matching
42 * the historic semantics isn't easy. The line number was always changed and
43 * column movement was usually relative. However, "y'a" moved the cursor to
44 * the first non-blank of the line marked by a, while "y`a" moved the cursor
45 * to the line and column marked by a. Hopefully, the motion component code
46 * got it right... Unlike delete, we make no adjustments here.
47 *
48 * PUBLIC: int v_yank __P((SCR *, VICMD *));
49 */
50 int
v_yank(SCR * sp,VICMD * vp)51 v_yank(SCR *sp, VICMD *vp)
52 {
53 size_t len;
54
55 if (cut(sp,
56 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, &vp->m_start,
57 &vp->m_stop, F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0))
58 return (1);
59 sp->rptlines[L_YANKED] += (vp->m_stop.lno - vp->m_start.lno) + 1;
60
61 /*
62 * One special correction, in case we've deleted the current line or
63 * character. We check it here instead of checking in every command
64 * that can be a motion component.
65 */
66 if (db_get(sp, vp->m_final.lno, DBG_FATAL, NULL, &len))
67 return (1);
68
69 /*
70 * !!!
71 * Cursor movements, other than those caused by a line mode command
72 * moving to another line, historically reset the relative position.
73 *
74 * This currently matches the check made in v_delete(), I'm hoping
75 * that they should be consistent...
76 */
77 if (!F_ISSET(vp, VM_LMODE)) {
78 F_CLR(vp, VM_RCM_MASK);
79 F_SET(vp, VM_RCM_SET);
80
81 /* Make sure the set cursor position exists. */
82 if (vp->m_final.cno >= len)
83 vp->m_final.cno = len ? len - 1 : 0;
84 }
85 return (0);
86 }
87