1 /* $OpenBSD: v_yank.c,v 1.7 2014/11/12 04:28:41 bentley Exp $ */
2
3 /*-
4 * Copyright (c) 1992, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 * Copyright (c) 1992, 1993, 1994, 1995, 1996
7 * Keith Bostic. All rights reserved.
8 *
9 * See the LICENSE file for redistribution information.
10 */
11
12 #include "config.h"
13
14 #include <sys/types.h>
15 #include <sys/queue.h>
16 #include <sys/time.h>
17
18 #include <bitstring.h>
19 #include <limits.h>
20 #include <stdio.h>
21
22 #include "../common/common.h"
23 #include "vi.h"
24
25 /*
26 * v_yank -- [buffer][count]y[count][motion]
27 * [buffer][count]Y
28 * Yank text (or lines of text) into a cut buffer.
29 *
30 * !!!
31 * Historic vi moved the cursor to the from MARK if it was before the current
32 * cursor and on a different line, e.g., "yk" moves the cursor but "yj" and
33 * "yl" do not. Unfortunately, it's too late to change this now. Matching
34 * the historic semantics isn't easy. The line number was always changed and
35 * column movement was usually relative. However, "y'a" moved the cursor to
36 * the first non-blank of the line marked by a, while "y`a" moved the cursor
37 * to the line and column marked by a. Hopefully, the motion component code
38 * got it right... Unlike delete, we make no adjustments here.
39 *
40 * PUBLIC: int v_yank(SCR *, VICMD *);
41 */
42 int
v_yank(SCR * sp,VICMD * vp)43 v_yank(SCR *sp, VICMD *vp)
44 {
45 size_t len;
46
47 if (cut(sp,
48 F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL, &vp->m_start,
49 &vp->m_stop, F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0))
50 return (1);
51 sp->rptlines[L_YANKED] += (vp->m_stop.lno - vp->m_start.lno) + 1;
52
53 /*
54 * One special correction, in case we've deleted the current line or
55 * character. We check it here instead of checking in every command
56 * that can be a motion component.
57 */
58 if (db_get(sp, vp->m_final.lno, DBG_FATAL, NULL, &len))
59 return (1);
60
61 /*
62 * !!!
63 * Cursor movements, other than those caused by a line mode command
64 * moving to another line, historically reset the relative position.
65 *
66 * This currently matches the check made in v_delete(), I'm hoping
67 * that they should be consistent...
68 */
69 if (!F_ISSET(vp, VM_LMODE)) {
70 F_CLR(vp, VM_RCM_MASK);
71 F_SET(vp, VM_RCM_SET);
72
73 /* Make sure the set cursor position exists. */
74 if (vp->m_final.cno >= len)
75 vp->m_final.cno = len ? len - 1 : 0;
76 }
77 return (0);
78 }
79