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