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_delete -- [buffer][count]d[count]motion
25 * [buffer][count]D
26 * Delete a range of text.
27 *
28 * PUBLIC: int v_delete(SCR *, VICMD *);
29 */
30 int
v_delete(SCR * sp,VICMD * vp)31 v_delete(SCR *sp, VICMD *vp)
32 {
33 recno_t nlines;
34 size_t len;
35 int lmode;
36
37 lmode = F_ISSET(vp, VM_LMODE) ? CUT_LINEMODE : 0;
38
39 /* Yank the lines. */
40 if (cut(sp, F_ISSET(vp, VC_BUFFER) ? &vp->buffer : NULL,
41 &vp->m_start, &vp->m_stop,
42 lmode | (F_ISSET(vp, VM_CUTREQ) ? CUT_NUMREQ : CUT_NUMOPT)))
43 return (1);
44
45 /* Delete the lines. */
46 if (del(sp, &vp->m_start, &vp->m_stop, lmode))
47 return (1);
48
49 /*
50 * Check for deletion of the entire file. Try to check a close
51 * by line so we don't go to the end of the file unnecessarily.
52 */
53 if (!db_exist(sp, vp->m_final.lno + 1)) {
54 if (db_last(sp, &nlines))
55 return (1);
56 if (nlines == 0) {
57 vp->m_final.lno = 1;
58 vp->m_final.cno = 0;
59 return (0);
60 }
61 }
62
63 /*
64 * One special correction, in case we've deleted the current line or
65 * character. We check it here instead of checking in every command
66 * that can be a motion component.
67 */
68 if (db_get(sp, vp->m_final.lno, 0, NULL, &len)) {
69 if (db_get(sp, nlines, DBG_FATAL, NULL, &len))
70 return (1);
71 vp->m_final.lno = nlines;
72 }
73
74 /*
75 * !!!
76 * Cursor movements, other than those caused by a line mode command
77 * moving to another line, historically reset the relative position.
78 *
79 * This currently matches the check made in v_yank(), I'm hoping that
80 * they should be consistent...
81 */
82 if (!F_ISSET(vp, VM_LMODE)) {
83 F_CLR(vp, VM_RCM_MASK);
84 F_SET(vp, VM_RCM_SET);
85
86 /* Make sure the set cursor position exists. */
87 if (vp->m_final.cno >= len)
88 vp->m_final.cno = len ? len - 1 : 0;
89 }
90
91 /*
92 * !!!
93 * The "dd" command moved to the first non-blank; "d<motion>"
94 * didn't.
95 */
96 if (F_ISSET(vp, VM_LDOUBLE)) {
97 F_CLR(vp, VM_RCM_MASK);
98 F_SET(vp, VM_RCM_SETFNB);
99 }
100 return (0);
101 }
102